From b00c52dae6d9ee8d0f2407118ef6544ae5524781 Mon Sep 17 00:00:00 2001 From: Wenwei Tao Date: Fri, 13 May 2016 22:59:20 +0800 Subject: cgroup: remove redundant cleanup in css_create When create css failed, before call css_free_rcu_fn, we remove the css id and exit the percpu_ref, but we will do these again in css_free_work_fn, so they are redundant. Especially the css id, that would cause problem if we remove it twice, since it may be assigned to another css after the first remove. tj: This was broken by two commits updating the free path without synchronizing the creation failure path. This can be easily triggered by trying to create more than 64k memory cgroups. Signed-off-by: Wenwei Tao Signed-off-by: Tejun Heo Cc: Vladimir Davydov Fixes: 9a1049da9bd2 ("percpu-refcount: require percpu_ref to be exited explicitly") Fixes: 01e586598b22 ("cgroup: release css->id after css_free") Cc: stable@vger.kernel.org # v3.17+ --- kernel/cgroup.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 86cb5c6e8932..789b84f973c9 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -5150,7 +5150,7 @@ static struct cgroup_subsys_state *css_create(struct cgroup *cgrp, err = cgroup_idr_alloc(&ss->css_idr, NULL, 2, 0, GFP_KERNEL); if (err < 0) - goto err_free_percpu_ref; + goto err_free_css; css->id = err; /* @css is ready to be brought online now, make it visible */ @@ -5174,9 +5174,6 @@ static struct cgroup_subsys_state *css_create(struct cgroup *cgrp, err_list_del: list_del_rcu(&css->sibling); - cgroup_idr_remove(&ss->css_idr, css->id); -err_free_percpu_ref: - percpu_ref_exit(&css->refcnt); err_free_css: call_rcu(&css->rcu_head, css_free_rcu_fn); return ERR_PTR(err); -- cgit v1.2.3 From 595144c1141c951a3c6bb9004ae6a2bc29aad66f Mon Sep 17 00:00:00 2001 From: Heiko Stuebner Date: Tue, 17 May 2016 20:57:50 +0200 Subject: clk: rockchip: initialize flags of clk_init_data in mmc-phase clock The flags element of clk_init_data was never initialized for mmc- phase-clocks resulting in the element containing a random value and thus possibly enabling unwanted clock flags. Fixes: 89bf26cbc1a0 ("clk: rockchip: Add support for the mmc clock phases using the framework") Cc: stable@vger.kernel.org Signed-off-by: Heiko Stuebner --- drivers/clk/rockchip/clk-mmc-phase.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/clk/rockchip/clk-mmc-phase.c b/drivers/clk/rockchip/clk-mmc-phase.c index bc856f21f6b2..460113008bd9 100644 --- a/drivers/clk/rockchip/clk-mmc-phase.c +++ b/drivers/clk/rockchip/clk-mmc-phase.c @@ -154,6 +154,7 @@ struct clk *rockchip_clk_register_mmc(const char *name, return ERR_PTR(-ENOMEM); init.name = name; + init.flags = 0; init.num_parents = num_parents; init.parent_names = parent_names; init.ops = &rockchip_mmc_clk_ops; -- cgit v1.2.3 From 176df69cb080c8cd813e51f800069e13ee607641 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Fri, 13 May 2016 11:42:16 -0700 Subject: clk: rockchip: mark rk3399 GIC clocks as critical We never want to kill the GIC. Noticed when making other clock fixups, and seeing the newly-constructed clock tree try to disable cpll, where we had this parent structure: aclk_gic <------\ |--- aclk_gic_pre <-- cpll <-- pll_cpll aclk_gic_noc <--/ Signed-off-by: Brian Norris Reviewed-by: Douglas Anderson Signed-off-by: Heiko Stuebner --- drivers/clk/rockchip/clk-rk3399.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c index 291543f52caa..145756c4f3c8 100644 --- a/drivers/clk/rockchip/clk-rk3399.c +++ b/drivers/clk/rockchip/clk-rk3399.c @@ -1466,6 +1466,8 @@ static struct rockchip_clk_branch rk3399_clk_pmu_branches[] __initdata = { static const char *const rk3399_cru_critical_clocks[] __initconst = { "aclk_cci_pre", + "aclk_gic", + "aclk_gic_noc", "pclk_perilp0", "pclk_perilp0", "hclk_perilp0", -- cgit v1.2.3 From 3bd14ae9da9194d369334556a70a7ff73ef94491 Mon Sep 17 00:00:00 2001 From: Xing Zheng Date: Fri, 13 May 2016 11:42:17 -0700 Subject: clk: rockchip: fix incorrect parent for rk3399's {c,g}pll_aclk_perihp_src There was a typo, swapping 'c' <--> 'g'. Signed-off-by: Xing Zheng Signed-off-by: Brian Norris Reviewed-by: Douglas Anderson Signed-off-by: Heiko Stuebner --- drivers/clk/rockchip/clk-rk3399.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c index 145756c4f3c8..9f86bfef70f7 100644 --- a/drivers/clk/rockchip/clk-rk3399.c +++ b/drivers/clk/rockchip/clk-rk3399.c @@ -832,9 +832,9 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = { RK3399_CLKGATE_CON(13), 1, GFLAGS), /* perihp */ - GATE(0, "cpll_aclk_perihp_src", "gpll", CLK_IGNORE_UNUSED, + GATE(0, "cpll_aclk_perihp_src", "cpll", CLK_IGNORE_UNUSED, RK3399_CLKGATE_CON(5), 0, GFLAGS), - GATE(0, "gpll_aclk_perihp_src", "cpll", CLK_IGNORE_UNUSED, + GATE(0, "gpll_aclk_perihp_src", "gpll", CLK_IGNORE_UNUSED, RK3399_CLKGATE_CON(5), 1, GFLAGS), COMPOSITE(ACLK_PERIHP, "aclk_perihp", mux_aclk_perihp_p, CLK_IGNORE_UNUSED, RK3399_CLKSEL_CON(14), 7, 1, MFLAGS, 0, 5, DFLAGS, -- cgit v1.2.3 From 4715f81afc342996f680b08c944a712d9cbef11b Mon Sep 17 00:00:00 2001 From: Douglas Anderson Date: Thu, 12 May 2016 11:03:16 -0700 Subject: clk: rockchip: Revert "clk: rockchip: reset init state before mmc card initialization" This reverts commit 7a03fe6f48f3 ("clk: rockchip: reset init state before mmc card initialization"). Though not totally obvious from the commit message nor from the source code, that commit appears to be trying to reset the "_drv" MMC clocks to 90 degrees (note that the "_sample" MMC clocks have a shift of 0 so are not touched). The major problem here is that it doesn't properly reset things. The phase is a two bit field and the commit only touches one of the two bits. Thus the commit had the following affect: - phase 0 => phase 90 - phase 90 => phase 90 - phase 180 => phase 270 - phase 270 => phase 270 Things get even weirder if you happen to have a bootloader that was actually using delay elements (should be no reason to, but you never know), since those are additional bits that weren't touched by the original patch. This is unlikely to be what we actually want. Checking on rk3288-veyron devices, I can see that the bootloader leaves these clocks as: - emmc: phase 180 - sdmmc: phase 90 - sdio0: phase 90 Thus on rk3288-veyron devices the commit we're reverting had the effect of changing the eMMC clock to phase 270. This probably explains the scattered reports I've heard of eMMC devices not working on some veyron devices when using the upstream kernel. The original commit was presumably made because previously the kernel didn't touch the "_drv" phase at all and relied on whatever value was there when the kernel started. If someone was using a bootloader that touched the "_drv" phase then, indeed, we should have code in the kernel to fix that. ...and also, to get ideal timings, we should also have the kernel change the phase depending on the speed mode. In fact, that's the subject of a recent patch I posted at . Ideally, we should take both the patch posted to dw_mmc and this revert. Since those will likely go through different trees, here I describe behavior with the combos: 1. Just this revert: likely will fix rk3288-veyron eMMC on some devices + other cases; might break someone with a strange bootloader that sets the phase to 0 or one that uses delay elements (pretty unpredicable what would happen in that case). 2. Just dw_mmc patch: fixes everyone. Effectly the dw_mmc patch will totally override the broken patch and fix everything. 3. Both patches: fixes everyone. Once dw_mmc is initting properly then any defaults from the clock code doesn't mattery. Fixes: 7a03fe6f48f3 ("clk: rockchip: reset init state before mmc card initialization") Signed-off-by: Douglas Anderson Reviewed-by: Shawn Lin [emmc and sdmmc still work on all current boards in mainline after this revert, so they should take precedence over any out-of-tree board that will hopefully again get fixed with the better upcoming dw_mmc change.] Signed-off-by: Heiko Stuebner --- drivers/clk/rockchip/clk-mmc-phase.c | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/drivers/clk/rockchip/clk-mmc-phase.c b/drivers/clk/rockchip/clk-mmc-phase.c index 460113008bd9..077fcdc7908b 100644 --- a/drivers/clk/rockchip/clk-mmc-phase.c +++ b/drivers/clk/rockchip/clk-mmc-phase.c @@ -41,8 +41,6 @@ static unsigned long rockchip_mmc_recalc(struct clk_hw *hw, #define ROCKCHIP_MMC_DEGREE_MASK 0x3 #define ROCKCHIP_MMC_DELAYNUM_OFFSET 2 #define ROCKCHIP_MMC_DELAYNUM_MASK (0xff << ROCKCHIP_MMC_DELAYNUM_OFFSET) -#define ROCKCHIP_MMC_INIT_STATE_RESET 0x1 -#define ROCKCHIP_MMC_INIT_STATE_SHIFT 1 #define PSECS_PER_SEC 1000000000000LL @@ -163,15 +161,6 @@ struct clk *rockchip_clk_register_mmc(const char *name, mmc_clock->reg = reg; mmc_clock->shift = shift; - /* - * Assert init_state to soft reset the CLKGEN - * for mmc tuning phase and degree - */ - if (mmc_clock->shift == ROCKCHIP_MMC_INIT_STATE_SHIFT) - writel(HIWORD_UPDATE(ROCKCHIP_MMC_INIT_STATE_RESET, - ROCKCHIP_MMC_INIT_STATE_RESET, - mmc_clock->shift), mmc_clock->reg); - clk = clk_register(NULL, &mmc_clock->hw); if (IS_ERR(clk)) kfree(mmc_clock); -- cgit v1.2.3 From 3183c0d519ff83af2926382c11716496f01d34bf Mon Sep 17 00:00:00 2001 From: Xing Zheng Date: Thu, 26 May 2016 21:49:08 +0800 Subject: clk: rockchip: fix cpuclk registration error handling It maybe due to a copy-paste error the error handing should be cclk not clk when checking if the cpuclk registration succeeded. Reported-by: Lin Huang Signed-off-by: Xing Zheng Signed-off-by: Heiko Stuebner --- drivers/clk/rockchip/clk-cpu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/clk/rockchip/clk-cpu.c b/drivers/clk/rockchip/clk-cpu.c index 4bb130cd0062..05b3d73bfefa 100644 --- a/drivers/clk/rockchip/clk-cpu.c +++ b/drivers/clk/rockchip/clk-cpu.c @@ -321,9 +321,9 @@ struct clk *rockchip_clk_register_cpuclk(const char *name, } cclk = clk_register(NULL, &cpuclk->hw); - if (IS_ERR(clk)) { + if (IS_ERR(cclk)) { pr_err("%s: could not register cpuclk %s\n", __func__, name); - ret = PTR_ERR(clk); + ret = PTR_ERR(cclk); goto free_rate_table; } -- cgit v1.2.3 From 3ac066e2227cb272c097f34475247fa0a6cdd2ff Mon Sep 17 00:00:00 2001 From: Jean-Jacques Hiblot Date: Tue, 31 May 2016 17:56:23 +0200 Subject: spi: spi-ti-qspi: Suspend the queue before removing the device Before disabling the pm_runtime, we must ensure that there is no transfer in progress nor will a new one be started. Otherwise the message pump will fail and in the end, the process requesting the transfer will be stuck. This behavior has been observed when transferring data from a SPI flash with dd while removing the module on a DRA7x-evm. Signed-off-by: Jean-Jacques Hiblot Signed-off-by: Mark Brown --- drivers/spi/spi-ti-qspi.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c index 443f664534e1..29ea8d2f9824 100644 --- a/drivers/spi/spi-ti-qspi.c +++ b/drivers/spi/spi-ti-qspi.c @@ -646,6 +646,13 @@ free_master: static int ti_qspi_remove(struct platform_device *pdev) { + struct ti_qspi *qspi = platform_get_drvdata(pdev); + int rc; + + rc = spi_master_suspend(qspi->master); + if (rc) + return rc; + pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); -- cgit v1.2.3 From 540c26087bfbad6ea72758b76b16ae6282a73fea Mon Sep 17 00:00:00 2001 From: Cameron Gutman Date: Wed, 1 Jun 2016 11:32:51 -0700 Subject: Input: xpad - fix rumble on Xbox One controllers with 2015 firmware Xbox One controllers that shipped with or were upgraded to the 2015 firmware discard the current rumble packets we send. This patch changes the Xbox One rumble packet to a form that both the newer and older firmware will accept. It is based on changes made to support newer Xbox One controllers in the SteamOS brewmaster-4.1 kernel branch. Signed-off-by: Cameron Gutman Signed-off-by: Dmitry Torokhov --- drivers/input/joystick/xpad.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index 804dbcc37d3f..923c57236c51 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -1031,17 +1031,17 @@ static int xpad_play_effect(struct input_dev *dev, void *data, struct ff_effect case XTYPE_XBOXONE: packet->data[0] = 0x09; /* activate rumble */ - packet->data[1] = 0x08; + packet->data[1] = 0x00; packet->data[2] = xpad->odata_serial++; - packet->data[3] = 0x08; /* continuous effect */ - packet->data[4] = 0x00; /* simple rumble mode */ - packet->data[5] = 0x03; /* L and R actuator only */ - packet->data[6] = 0x00; /* TODO: LT actuator */ - packet->data[7] = 0x00; /* TODO: RT actuator */ + packet->data[3] = 0x09; + packet->data[4] = 0x00; + packet->data[5] = 0x0F; + packet->data[6] = 0x00; + packet->data[7] = 0x00; packet->data[8] = strong / 512; /* left actuator */ packet->data[9] = weak / 512; /* right actuator */ - packet->data[10] = 0x80; /* length of pulse */ - packet->data[11] = 0x00; /* stop period of pulse */ + packet->data[10] = 0xFF; + packet->data[11] = 0x00; packet->data[12] = 0x00; packet->len = 13; packet->pending = true; -- cgit v1.2.3 From 62d0e71df063101e4551327bd9fa9aaa3535c86b Mon Sep 17 00:00:00 2001 From: Shawn Lin Date: Fri, 3 Jun 2016 08:54:18 +0800 Subject: clk: rockchip: release io resource when failing to init clk on rk3399 We should call iounmap to relase reg_base since it's not going to be used any more if failing to init clk. This was missing on the newly added rk3399 clock tree. Signed-off-by: Shawn Lin Signed-off-by: Heiko Stuebner --- drivers/clk/rockchip/clk-rk3399.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c index 9f86bfef70f7..8059a8d3ea36 100644 --- a/drivers/clk/rockchip/clk-rk3399.c +++ b/drivers/clk/rockchip/clk-rk3399.c @@ -1510,6 +1510,7 @@ static void __init rk3399_clk_init(struct device_node *np) ctx = rockchip_clk_init(np, reg_base, CLK_NR_CLKS); if (IS_ERR(ctx)) { pr_err("%s: rockchip clk init failed\n", __func__); + iounmap(reg_base); return; } @@ -1555,6 +1556,7 @@ static void __init rk3399_pmu_clk_init(struct device_node *np) ctx = rockchip_clk_init(np, reg_base, CLKPMU_NR_CLKS); if (IS_ERR(ctx)) { pr_err("%s: rockchip pmu clk init failed\n", __func__); + iounmap(reg_base); return; } -- cgit v1.2.3 From fee48cf8374569a3888fd8c8536283e6067f0cfb Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Fri, 1 Apr 2016 14:12:12 -0700 Subject: ath10k: fix deadlock when peer cannot be created We must not attempt to send WMI packets while holding the data-lock, as it may deadlock: BUG: sleeping function called from invalid context at drivers/net/wireless/ath/ath10k/wmi.c:1824 in_atomic(): 1, irqs_disabled(): 0, pid: 2878, name: wpa_supplicant ============================================= [ INFO: possible recursive locking detected ] 4.4.6+ #21 Tainted: G W O --------------------------------------------- wpa_supplicant/2878 is trying to acquire lock: (&(&ar->data_lock)->rlock){+.-...}, at: [] ath10k_wmi_tx_beacons_iter+0x26/0x11a [ath10k_core] but task is already holding lock: (&(&ar->data_lock)->rlock){+.-...}, at: [] ath10k_peer_create+0x122/0x1ae [ath10k_core] other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&(&ar->data_lock)->rlock); lock(&(&ar->data_lock)->rlock); *** DEADLOCK *** May be due to missing lock nesting notation 4 locks held by wpa_supplicant/2878: #0: (rtnl_mutex){+.+.+.}, at: [] rtnl_lock+0x12/0x14 #1: (&ar->conf_mutex){+.+.+.}, at: [] ath10k_add_interface+0x3b/0xbda [ath10k_core] #2: (&(&ar->data_lock)->rlock){+.-...}, at: [] ath10k_peer_create+0x122/0x1ae [ath10k_core] #3: (rcu_read_lock){......}, at: [] rcu_read_lock+0x0/0x66 [mac80211] stack backtrace: CPU: 3 PID: 2878 Comm: wpa_supplicant Tainted: G W O 4.4.6+ #21 Hardware name: To be filled by O.E.M. To be filled by O.E.M./ChiefRiver, BIOS 4.6.5 06/07/2013 0000000000000000 ffff8801fcadf8f0 ffffffff8137086d ffffffff82681720 ffffffff82681720 ffff8801fcadf9b0 ffffffff8112e3be ffff8801fcadf920 0000000100000000 ffffffff82681720 ffffffffa0721500 ffff8801fcb8d348 Call Trace: [] dump_stack+0x81/0xb6 [] __lock_acquire+0xc5b/0xde7 [] ? ath10k_wmi_tx_beacons_iter+0x15/0x11a [ath10k_core] [] ? mark_lock+0x24/0x201 [] lock_acquire+0x132/0x1cb [] ? lock_acquire+0x132/0x1cb [] ? ath10k_wmi_tx_beacons_iter+0x26/0x11a [ath10k_core] [] ? ath10k_wmi_cmd_send_nowait+0x1ce/0x1ce [ath10k_core] [] _raw_spin_lock_bh+0x31/0x40 [] ? ath10k_wmi_tx_beacons_iter+0x26/0x11a [ath10k_core] [] ath10k_wmi_tx_beacons_iter+0x26/0x11a [ath10k_core] [] ? ath10k_wmi_cmd_send_nowait+0x1ce/0x1ce [ath10k_core] [] __iterate_interfaces+0x9d/0x13d [mac80211] [] ieee80211_iterate_active_interfaces_atomic+0x32/0x3e [mac80211] [] ? ath10k_wmi_cmd_send_nowait+0x1ce/0x1ce [ath10k_core] [] ath10k_wmi_tx_beacons_nowait.isra.13+0x14/0x16 [ath10k_core] [] ath10k_wmi_cmd_send+0x71/0x242 [ath10k_core] [] ath10k_wmi_peer_delete+0x3f/0x42 [ath10k_core] [] ath10k_peer_create+0x15e/0x1ae [ath10k_core] [] ath10k_add_interface+0x70d/0xbda [ath10k_core] [] drv_add_interface+0x123/0x1a5 [mac80211] [] ieee80211_do_open+0x351/0x667 [mac80211] [] ieee80211_open+0x49/0x4c [mac80211] [] __dev_open+0x88/0xde [] __dev_change_flags+0xa4/0x13a [] dev_change_flags+0x1f/0x54 [] devinet_ioctl+0x2b9/0x5c9 [] ? copy_to_user+0x32/0x38 [] inet_ioctl+0x81/0x9d [] ? inet_ioctl+0x81/0x9d [] sock_do_ioctl+0x20/0x3d [] sock_ioctl+0x222/0x22e [] do_vfs_ioctl+0x453/0x4d7 [] ? __sys_recvmsg+0x4c/0x5b [] ? __fget_light+0x48/0x6c [] SyS_ioctl+0x52/0x74 [] entry_SYSCALL_64_fastpath+0x16/0x7a Signed-off-by: Ben Greear Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 6dd1d26b357f..4040f9413e86 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -679,10 +679,10 @@ static int ath10k_peer_create(struct ath10k *ar, peer = ath10k_peer_find(ar, vdev_id, addr); if (!peer) { + spin_unlock_bh(&ar->data_lock); ath10k_warn(ar, "failed to find peer %pM on vdev %i after creation\n", addr, vdev_id); ath10k_wmi_peer_delete(ar, vdev_id, addr); - spin_unlock_bh(&ar->data_lock); return -ENOENT; } -- cgit v1.2.3 From 8d0a0710ea0d22881fdb40eb79d346a98cc64ae6 Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Thu, 2 Jun 2016 17:59:54 +0300 Subject: ath10k: fix crash related to printing features This looks like a regression from commit c4cdf753ed42 ("ath10k: move fw_features to struct ath10k_fw_file"), we were printing the features from a wrong struct. Fixes: c4cdf753ed42 ("ath10k: move fw_features to struct ath10k_fw_file") Signed-off-by: Ben Greear [kvalo@qca.qualcomm.com: improve commit log] Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c index 49af62428c88..a92a0ba829f5 100644 --- a/drivers/net/wireless/ath/ath10k/core.c +++ b/drivers/net/wireless/ath/ath10k/core.c @@ -1083,7 +1083,7 @@ int ath10k_core_fetch_firmware_api_n(struct ath10k *ar, const char *name, } ath10k_dbg_dump(ar, ATH10K_DBG_BOOT, "features", "", - ar->running_fw->fw_file.fw_features, + fw_file->fw_features, sizeof(fw_file->fw_features)); break; case ATH10K_FW_IE_FW_IMAGE: -- cgit v1.2.3 From b36fad65d61fffe4b662d4bfb1ed673c455a36a2 Mon Sep 17 00:00:00 2001 From: Michal Marek Date: Tue, 7 Jun 2016 11:57:02 +0200 Subject: kbuild: Initialize exported variables The NOSTDINC_FLAGS variable is exported, so it needs to be cleared to avoid duplicating its content when running make from within make (e.g. in the packaging targets). This became an issue after commit 9c8fa9bc08f6 ("kbuild: fix if_change and friends to consider argument order"), which no longer ignores the duplicate options. As Paulo Zanoni points out, the LDFLAGS_vmlinux variable has the same problem. Reported-by: "Zanoni, Paulo R" Fixes: 9c8fa9bc08f6 ("kbuild: fix if_change and friends to consider argument order") Signed-off-by: Michal Marek --- Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Makefile b/Makefile index 0f70de63cfdb..af0c463e908f 100644 --- a/Makefile +++ b/Makefile @@ -363,11 +363,13 @@ CHECK = sparse CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ -Wbitwise -Wno-return-void $(CF) +NOSTDINC_FLAGS = CFLAGS_MODULE = AFLAGS_MODULE = LDFLAGS_MODULE = CFLAGS_KERNEL = AFLAGS_KERNEL = +LDFLAGS_vmlinux = CFLAGS_GCOV = -fprofile-arcs -ftest-coverage -fno-tree-loop-im -Wno-maybe-uninitialized CFLAGS_KCOV = -fsanitize-coverage=trace-pc -- cgit v1.2.3 From 4dc0dd83603f05dc3ae152af33ecb15104c313f3 Mon Sep 17 00:00:00 2001 From: Tomeu Vizoso Date: Wed, 8 Jun 2016 09:32:51 +0200 Subject: spi: rockchip: Signal unfinished DMA transfers When using DMA, the transfer_one callback should return 1 because the transfer hasn't finished yet. A previous commit changed the function to return 0 when the DMA channels were correctly prepared. This manifested in Veyron boards with this message: [ 1.983605] cros-ec-spi spi0.0: EC failed to respond in time Fixes: ea9849113343 ("spi: rockchip: check return value of dmaengine_prep_slave_sg") Signed-off-by: Tomeu Vizoso Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-rockchip.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index cd89682065b9..1026e180eed7 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -578,7 +578,7 @@ static int rockchip_spi_transfer_one( struct spi_device *spi, struct spi_transfer *xfer) { - int ret = 1; + int ret = 0; struct rockchip_spi *rs = spi_master_get_devdata(master); WARN_ON(readl_relaxed(rs->regs + ROCKCHIP_SPI_SSIENR) && @@ -627,6 +627,8 @@ static int rockchip_spi_transfer_one( spi_enable_chip(rs, 1); ret = rockchip_spi_prepare_dma(rs); } + /* successful DMA prepare means the transfer is in progress */ + ret = ret ? ret : 1; } else { spi_enable_chip(rs, 1); ret = rockchip_spi_pio_transfer(rs); -- cgit v1.2.3 From 06a84db74c3572cde79eb1b04f301399eafb8226 Mon Sep 17 00:00:00 2001 From: Luca Coelho Date: Mon, 2 May 2016 15:27:34 +0300 Subject: iwlwifi: mvm: increase scan timeout to 20 seconds The 16 seconds timeout we were using turned out to be too short. Recalculations by system show that the total time in both bands should be < 18.5 seconds, even in the slowest cases (e.g. DCM P2P with DTIM=2). Rounding it up to 20 seconds for a bit more safety. Fixes: 728e825f81b1 ("iwlwifi: mvm: add a scan timeout for regular scans") Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/scan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c index 6f609dd5c222..e78fc567ff7d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c @@ -1222,7 +1222,7 @@ static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) return -EIO; } -#define SCAN_TIMEOUT (16 * HZ) +#define SCAN_TIMEOUT (20 * HZ) void iwl_mvm_scan_timeout(unsigned long data) { -- cgit v1.2.3 From 7d6a1ab6a2db180122dee8db6c201f2dcf677813 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Sun, 15 May 2016 10:20:29 +0300 Subject: iwlwifi: mvm: fix RCU splat in TKIP's update_key The commit below mistakenly changed an rcu_dereference_check to a rcu_dereference_protected which introduced the following RCU warning: [ INFO: suspicious RCU usage. ] 4.6.0-rc7-next-20160513-dbg-00004-g8de8b92-dirty #655 Not tainted ------------------------------- drivers/net/wireless/intel/iwlwifi/mvm/mvm.h:1069 suspicious rcu_dereference_protected() usage! Call Trace: [] lockdep_rcu_suspicious+0xf7/0x100 [] iwl_mvm_get_key_sta.part.0+0x5d/0x80 [iwlmvm] [] iwl_mvm_update_tkip_key+0xd3/0x162 [iwlmvm] [] iwl_mvm_mac_update_tkip_key+0x17/0x19 [iwlmvm] [] ieee80211_tkip_decrypt_data+0x22c/0x24b [mac80211] [] ieee80211_crypto_tkip_decrypt+0xc5/0x110 [mac80211] [] ieee80211_rx_handlers+0x9bb/0x1fe1 [mac80211] Fixes: 13303c0fb148 ("iwlwifi: mvm: use helpers to get iwl_mvm_sta") Reported-by: Sergey Senozhatsky Signed-off-by: Emmanuel Grumbach Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index fea4d3437e2f..0454bfe0ef6c 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -1852,12 +1852,18 @@ static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { u8 sta_id = mvmvif->ap_sta_id; + sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], + lockdep_is_held(&mvm->mutex)); + /* * It is possible that the 'sta' parameter is NULL, * for example when a GTK is removed - the sta_id will then * be the AP ID, and no station was passed by mac80211. */ - return iwl_mvm_sta_from_staid_protected(mvm, sta_id); + if (IS_ERR_OR_NULL(sta)) + return NULL; + + return iwl_mvm_sta_from_mac80211(sta); } return NULL; -- cgit v1.2.3 From 1f9788f335d7c3145bcb59bd570c5b9ef7203ef4 Mon Sep 17 00:00:00 2001 From: Luca Coelho Date: Mon, 16 May 2016 14:34:20 +0300 Subject: iwlwifi: mvm: fix potential NULL-dereference in iwl_mvm_reorder() We try to access sta before we check for IS_ERR_OR_NULL(), so we may end up accessing a NULL pointer. To prevent that, move the conversion from sta to mvm_sta below the check. Fixes: b915c10174fb ("iwlwifi: mvm: add reorder buffer per queue") Reported-by: Dan Carpenter Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c index ac2c5718e454..2c61516d06ff 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c @@ -581,7 +581,7 @@ static bool iwl_mvm_reorder(struct iwl_mvm *mvm, struct iwl_rx_mpdu_desc *desc) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; - struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); + struct iwl_mvm_sta *mvm_sta; struct iwl_mvm_baid_data *baid_data; struct iwl_mvm_reorder_buffer *buffer; struct sk_buff *tail; @@ -604,6 +604,8 @@ static bool iwl_mvm_reorder(struct iwl_mvm *mvm, if (WARN_ON(IS_ERR_OR_NULL(sta))) return false; + mvm_sta = iwl_mvm_sta_from_mac80211(sta); + /* not a data packet */ if (!ieee80211_is_data_qos(hdr->frame_control) || is_multicast_ether_addr(hdr->addr1)) -- cgit v1.2.3 From aa950524d501afa28869b7f56e539fd9e744dd9f Mon Sep 17 00:00:00 2001 From: Ayala Beker Date: Wed, 1 Jun 2016 00:28:09 +0300 Subject: iwlwifi: mvm: set the encryption type of an IGTK key The FW expect the driver to set the encryption algorithm type when installing the IGTK key in the HW. Currently when installing CMAC IGTK key we don't set the algorithm type and as a result the FW fails to calculate the MIC of multicast management frames. Fix it. Signed-off-by: Ayala Beker Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index 0454bfe0ef6c..b23ab4a4504f 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -1961,6 +1961,14 @@ static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, struct ieee80211_key_seq seq; const u8 *pn; + switch (keyconf->cipher) { + case WLAN_CIPHER_SUITE_AES_CMAC: + igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); + break; + default: + return -EINVAL; + } + memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); ieee80211_get_key_rx_seq(keyconf, 0, &seq); pn = seq.aes_cmac.pn; -- cgit v1.2.3 From 280a3efa82fccc9532c968a77e5162cb9f0af497 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 7 Jun 2016 14:46:37 +0200 Subject: iwlwifi: mvm: fix a few firmware capability checks My cleanup in "iwlwifi: prepare for higher API/CAPA bits" accidentally inverted a few tests - fix them. Fixes: 859d914c8f5c ("iwlwifi: prepare for higher API/CAPA bits") Reported-by: Sara Sharon Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index e5f267b21316..18a8474b5760 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -3851,8 +3851,8 @@ static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, if (idx != 0) return -ENOENT; - if (fw_has_capa(&mvm->fw->ucode_capa, - IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) + if (!fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) return -ENOENT; mutex_lock(&mvm->mutex); @@ -3898,8 +3898,8 @@ static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); - if (fw_has_capa(&mvm->fw->ucode_capa, - IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) + if (!fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) return; /* if beacon filtering isn't on mac80211 does it anyway */ -- cgit v1.2.3 From fc0f7e3317c5f406e6d5520209b4689a4ffecfdf Mon Sep 17 00:00:00 2001 From: Manfred Schlaegl Date: Mon, 6 Jun 2016 10:47:47 +0200 Subject: net: phy: smsc: reintroduced unconditional soft reset We detected some problems using the smsc lan8720a in combination with i.MX28 and tracked this down to commit 21009686662f ("net: phy: smsc: move smsc_phy_config_init reset part in a soft_reset function") With 2100968666 the generic soft reset is replaced by a specific function which handles power down state correctly. But additionally the soft reset itself got conditional and is therefore also only performed if the phy is in power down state. This patch keeps the conditional wake up from power down, but re-introduces the unconditional soft reset using the generic soft reset function. It was tested on linux-4.1.25 and linux-4.7.0-rc2. Signed-off-by: Manfred Schlaegl Signed-off-by: David S. Miller --- drivers/net/phy/smsc.c | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-) diff --git a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c index 2e21e9366f76..b62c4aaee40b 100644 --- a/drivers/net/phy/smsc.c +++ b/drivers/net/phy/smsc.c @@ -75,22 +75,13 @@ static int smsc_phy_reset(struct phy_device *phydev) * in all capable mode before using it. */ if ((rc & MII_LAN83C185_MODE_MASK) == MII_LAN83C185_MODE_POWERDOWN) { - int timeout = 50000; - - /* set "all capable" mode and reset the phy */ + /* set "all capable" mode */ rc |= MII_LAN83C185_MODE_ALL; phy_write(phydev, MII_LAN83C185_SPECIAL_MODES, rc); - phy_write(phydev, MII_BMCR, BMCR_RESET); - - /* wait end of reset (max 500 ms) */ - do { - udelay(10); - if (timeout-- == 0) - return -1; - rc = phy_read(phydev, MII_BMCR); - } while (rc & BMCR_RESET); } - return 0; + + /* reset the phy */ + return genphy_soft_reset(phydev); } static int lan911x_config_init(struct phy_device *phydev) -- cgit v1.2.3 From 56fae404fb2c306db0a35dad0d16fa24c65678f3 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Tue, 7 Jun 2016 12:06:58 +0300 Subject: bridge: Fix incorrect re-injection of STP packets Commit 8626c56c8279 ("bridge: fix potential use-after-free when hook returns QUEUE or STOLEN verdict") fixed incorrect usage of NF_HOOK's return value by consuming packets in okfn via br_pass_frame_up(). However, this function re-injects packets to the Rx path with skb->dev set to the bridge device, which breaks kernel's STP, as all STP packets appear to originate from the bridge device itself. Instead, if STP is enabled and bridge isn't a 802.1ad bridge, then learn packet's SMAC and inject it back to the Rx path for further processing by the packet handlers. The patch also makes netfilter's behavior consistent with regards to packets destined to the Bridge Group Address, as no hook registered at LOCAL_IN will ever be called, regardless if STP is enabled or not. Cc: Florian Westphal Cc: Shmulik Ladkani Cc: Toshiaki Makita Fixes: 8626c56c8279 ("bridge: fix potential use-after-free when hook returns QUEUE or STOLEN verdict") Signed-off-by: Jiri Pirko Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller --- net/bridge/br_input.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 160797722228..43d2cd862bc2 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -213,8 +213,7 @@ drop: } EXPORT_SYMBOL_GPL(br_handle_frame_finish); -/* note: already called with rcu_read_lock */ -static int br_handle_local_finish(struct net *net, struct sock *sk, struct sk_buff *skb) +static void __br_handle_local_finish(struct sk_buff *skb) { struct net_bridge_port *p = br_port_get_rcu(skb->dev); u16 vid = 0; @@ -222,6 +221,14 @@ static int br_handle_local_finish(struct net *net, struct sock *sk, struct sk_bu /* check if vlan is allowed, to avoid spoofing */ if (p->flags & BR_LEARNING && br_should_learn(p, skb, &vid)) br_fdb_update(p->br, p, eth_hdr(skb)->h_source, vid, false); +} + +/* note: already called with rcu_read_lock */ +static int br_handle_local_finish(struct net *net, struct sock *sk, struct sk_buff *skb) +{ + struct net_bridge_port *p = br_port_get_rcu(skb->dev); + + __br_handle_local_finish(skb); BR_INPUT_SKB_CB(skb)->brdev = p->br->dev; br_pass_frame_up(skb); @@ -274,7 +281,9 @@ rx_handler_result_t br_handle_frame(struct sk_buff **pskb) if (p->br->stp_enabled == BR_NO_STP || fwd_mask & (1u << dest[5])) goto forward; - break; + *pskb = skb; + __br_handle_local_finish(skb); + return RX_HANDLER_PASS; case 0x01: /* IEEE MAC (Pause) */ goto drop; -- cgit v1.2.3 From c3ec5e5ce9cea1f369a5a8ad69d6471680796bc6 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Thu, 9 Jun 2016 18:05:09 +0100 Subject: net: diag: add missing declarations The functions inet_diag_msg_common_fill and inet_diag_msg_attrs_fill seem to have been missed from the include/linux/inet_diag.h header file. Add them to fix the following warnings: net/ipv4/inet_diag.c:69:6: warning: symbol 'inet_diag_msg_common_fill' was not declared. Should it be static? net/ipv4/inet_diag.c:108:5: warning: symbol 'inet_diag_msg_attrs_fill' was not declared. Should it be static? Signed-off-by: Ben Dooks Signed-off-by: David S. Miller --- include/linux/inet_diag.h | 6 ++++++ net/sctp/sctp_diag.c | 6 ------ 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/include/linux/inet_diag.h b/include/linux/inet_diag.h index 7c27fa1030e8..feb04ea20f11 100644 --- a/include/linux/inet_diag.h +++ b/include/linux/inet_diag.h @@ -52,6 +52,12 @@ struct sock *inet_diag_find_one_icsk(struct net *net, int inet_diag_bc_sk(const struct nlattr *_bc, struct sock *sk); +void inet_diag_msg_common_fill(struct inet_diag_msg *r, struct sock *sk); + +int inet_diag_msg_attrs_fill(struct sock *sk, struct sk_buff *skb, + struct inet_diag_msg *r, int ext, + struct user_namespace *user_ns); + extern int inet_diag_register(const struct inet_diag_handler *handler); extern void inet_diag_unregister(const struct inet_diag_handler *handler); #endif /* _INET_DIAG_H_ */ diff --git a/net/sctp/sctp_diag.c b/net/sctp/sctp_diag.c index 1ce724b87618..f69edcf219e5 100644 --- a/net/sctp/sctp_diag.c +++ b/net/sctp/sctp_diag.c @@ -3,12 +3,6 @@ #include #include -extern void inet_diag_msg_common_fill(struct inet_diag_msg *r, - struct sock *sk); -extern int inet_diag_msg_attrs_fill(struct sock *sk, struct sk_buff *skb, - struct inet_diag_msg *r, int ext, - struct user_namespace *user_ns); - static void sctp_diag_get_info(struct sock *sk, struct inet_diag_msg *r, void *info); -- cgit v1.2.3 From 0b392be9a86560dae3af2e7528f226ff465ab549 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Fri, 10 Jun 2016 12:11:06 +0100 Subject: net: ipconfig: avoid warning by making ic_addrservaddr static The symbol ic_addrservaddr is not static, but has no declaration to match so make it static to fix the following warning: net/ipv4/ipconfig.c:130:8: warning: symbol 'ic_addrservaddr' was not declared. Should it be static? Signed-off-by: Ben Dooks Signed-off-by: David S. Miller --- net/ipv4/ipconfig.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c index 2ed9dd2b5f2f..eccf9fd190c0 100644 --- a/net/ipv4/ipconfig.c +++ b/net/ipv4/ipconfig.c @@ -127,7 +127,7 @@ __be32 ic_myaddr = NONE; /* My IP address */ static __be32 ic_netmask = NONE; /* Netmask for local subnet */ __be32 ic_gateway = NONE; /* Gateway IP address */ -__be32 ic_addrservaddr = NONE; /* IP Address of the IP addresses'server */ +static __be32 ic_addrservaddr = NONE; /* IP Address of the IP addresses'server */ __be32 ic_servaddr = NONE; /* Boot server IP address */ -- cgit v1.2.3 From 562c5a70400c75f50d99de631666ac7cc2f03958 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 10 Jun 2016 13:27:58 +0200 Subject: net: mediatek: add missing return code check The code fails to check if the scratch memory was properly allocated. Add this check and return with an error if the allocation failed. Signed-off-by: John Crispin Signed-off-by: David S. Miller --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 4763252bbf85..11cd7304e497 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -495,6 +495,9 @@ static int mtk_init_fq_dma(struct mtk_eth *eth) eth->scratch_head = kcalloc(cnt, MTK_QDMA_PAGE_SIZE, GFP_KERNEL); + if (unlikely(!eth->scratch_head)) + return -ENOMEM; + dma_addr = dma_map_single(eth->dev, eth->scratch_head, cnt * MTK_QDMA_PAGE_SIZE, DMA_FROM_DEVICE); -- cgit v1.2.3 From 605e4fe476956c67ced8518247e6c9601a31b868 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 10 Jun 2016 13:27:59 +0200 Subject: net: mediatek: fix missing free of scratch memory Scratch memory gets allocated in mtk_init_fq_dma() but the corresponding code to free it is missing inside mtk_dma_free() causing a memory leak. With this patch applied, we can run ifconfig up/down several thousand times without any problems. Signed-off-by: John Crispin Signed-off-by: David S. Miller --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 18 +++++++++++++----- drivers/net/ethernet/mediatek/mtk_eth_soc.h | 2 ++ 2 files changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 11cd7304e497..fb8b17db7fa2 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -481,14 +481,14 @@ static inline void mtk_rx_get_desc(struct mtk_rx_dma *rxd, /* the qdma core needs scratch memory to be setup */ static int mtk_init_fq_dma(struct mtk_eth *eth) { - dma_addr_t phy_ring_head, phy_ring_tail; + dma_addr_t phy_ring_tail; int cnt = MTK_DMA_SIZE; dma_addr_t dma_addr; int i; eth->scratch_ring = dma_alloc_coherent(eth->dev, cnt * sizeof(struct mtk_tx_dma), - &phy_ring_head, + ð->phy_scratch_ring, GFP_ATOMIC | __GFP_ZERO); if (unlikely(!eth->scratch_ring)) return -ENOMEM; @@ -505,19 +505,19 @@ static int mtk_init_fq_dma(struct mtk_eth *eth) return -ENOMEM; memset(eth->scratch_ring, 0x0, sizeof(struct mtk_tx_dma) * cnt); - phy_ring_tail = phy_ring_head + + phy_ring_tail = eth->phy_scratch_ring + (sizeof(struct mtk_tx_dma) * (cnt - 1)); for (i = 0; i < cnt; i++) { eth->scratch_ring[i].txd1 = (dma_addr + (i * MTK_QDMA_PAGE_SIZE)); if (i < cnt - 1) - eth->scratch_ring[i].txd2 = (phy_ring_head + + eth->scratch_ring[i].txd2 = (eth->phy_scratch_ring + ((i + 1) * sizeof(struct mtk_tx_dma))); eth->scratch_ring[i].txd3 = TX_DMA_SDL(MTK_QDMA_PAGE_SIZE); } - mtk_w32(eth, phy_ring_head, MTK_QDMA_FQ_HEAD); + mtk_w32(eth, eth->phy_scratch_ring, MTK_QDMA_FQ_HEAD); mtk_w32(eth, phy_ring_tail, MTK_QDMA_FQ_TAIL); mtk_w32(eth, (cnt << 16) | cnt, MTK_QDMA_FQ_CNT); mtk_w32(eth, MTK_QDMA_PAGE_SIZE << 16, MTK_QDMA_FQ_BLEN); @@ -1210,6 +1210,14 @@ static void mtk_dma_free(struct mtk_eth *eth) for (i = 0; i < MTK_MAC_COUNT; i++) if (eth->netdev[i]) netdev_reset_queue(eth->netdev[i]); + if (eth->scratch_ring) { + dma_free_coherent(eth->dev, + MTK_DMA_SIZE * sizeof(struct mtk_tx_dma), + eth->scratch_ring, + eth->phy_scratch_ring); + eth->scratch_ring = NULL; + eth->phy_scratch_ring = 0; + } mtk_tx_clean(eth); mtk_rx_clean(eth); kfree(eth->scratch_head); diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index eed626d56ea4..57f7e8a3dbe2 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -357,6 +357,7 @@ struct mtk_rx_ring { * @rx_ring: Pointer to the memore holding info about the RX ring * @rx_napi: The NAPI struct * @scratch_ring: Newer SoCs need memory for a second HW managed TX ring + * @phy_scratch_ring: physical address of scratch_ring * @scratch_head: The scratch memory that scratch_ring points to. * @clk_ethif: The ethif clock * @clk_esw: The switch clock @@ -384,6 +385,7 @@ struct mtk_eth { struct mtk_rx_ring rx_ring; struct napi_struct rx_napi; struct mtk_tx_dma *scratch_ring; + dma_addr_t phy_scratch_ring; void *scratch_head; struct clk *clk_ethif; struct clk *clk_esw; -- cgit v1.2.3 From 2fae723cefb8bfe712371978288aa0a70b54802e Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 10 Jun 2016 13:28:00 +0200 Subject: net: mediatek: invalid buffer lookup in mtk_tx_map() The lookup of the tx_buffer in the error path inside mtk_tx_map() uses the wrong descriptor pointer. This looks like a copy & paste error. Change the code to use the correct pointer. Signed-off-by: John Crispin Signed-off-by: David S. Miller --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index fb8b17db7fa2..8c3e54387948 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -674,7 +674,7 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev, err_dma: do { - tx_buf = mtk_desc_to_tx_buf(ring, txd); + tx_buf = mtk_desc_to_tx_buf(ring, itxd); /* unmap dma */ mtk_tx_unmap(&dev->dev, tx_buf); -- cgit v1.2.3 From 94321a9fc9f5b6c6e949cc7c69741538f556ab74 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 10 Jun 2016 13:28:01 +0200 Subject: net: mediatek: dropped rx packets are not being counted properly There are two places inside mtk_poll_rx where rx_dropped is not being incremented properly. Fix this by adding the missing code to increment the counter. Signed-off-by: John Crispin Signed-off-by: David S. Miller --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 8c3e54387948..b6d3c217722d 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -829,6 +829,7 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, DMA_FROM_DEVICE); if (unlikely(dma_mapping_error(&netdev->dev, dma_addr))) { skb_free_frag(new_data); + netdev->stats.rx_dropped++; goto release_desc; } @@ -836,6 +837,7 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, skb = build_skb(data, ring->frag_size); if (unlikely(!skb)) { put_page(virt_to_head_page(new_data)); + netdev->stats.rx_dropped++; goto release_desc; } skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN); -- cgit v1.2.3 From 6675086d04e7c0748cd5884f7c8611b5f0836250 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 10 Jun 2016 13:28:02 +0200 Subject: net: mediatek: add next data pointer coherency protection The QDMA engine can fail to update the register pointing to the next TX descriptor if this bit does not get set in the QDMA configuration register. Not setting this bit can result in invalid values inside the TX rings registers which will causes TX stalls. Signed-off-by: John Crispin Signed-off-by: David S. Miller --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +- drivers/net/ethernet/mediatek/mtk_eth_soc.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index b6d3c217722d..f30c2e474b87 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1282,7 +1282,7 @@ static int mtk_start_dma(struct mtk_eth *eth) mtk_w32(eth, MTK_TX_WB_DDONE | MTK_RX_DMA_EN | MTK_TX_DMA_EN | MTK_RX_2B_OFFSET | MTK_DMA_SIZE_16DWORDS | - MTK_RX_BT_32DWORDS, + MTK_RX_BT_32DWORDS | MTK_NDP_CO_PRO, MTK_QDMA_GLO_CFG); return 0; diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index 57f7e8a3dbe2..a5eb7c62306b 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -91,6 +91,7 @@ #define MTK_QDMA_GLO_CFG 0x1A04 #define MTK_RX_2B_OFFSET BIT(31) #define MTK_RX_BT_32DWORDS (3 << 11) +#define MTK_NDP_CO_PRO BIT(10) #define MTK_TX_WB_DDONE BIT(6) #define MTK_DMA_SIZE_16DWORDS (2 << 4) #define MTK_RX_DMA_BUSY BIT(3) -- cgit v1.2.3 From 2ff0bb61646f286fa97db2904491974302a14f1f Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 10 Jun 2016 13:28:03 +0200 Subject: net: mediatek: disable all interrupts during probe The current code only disables those IRQs that we will later use. To ensure that we have a predefined state, we really want to disable all IRQs. Change the code to disable all IRQs to achieve this. Signed-off-by: John Crispin Signed-off-by: David S. Miller --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index f30c2e474b87..e3dadae9f6dd 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1396,7 +1396,7 @@ static int __init mtk_hw_init(struct mtk_eth *eth) /* disable delay and normal interrupt */ mtk_w32(eth, 0, MTK_QDMA_DELAY_INT); - mtk_irq_disable(eth, MTK_TX_DONE_INT | MTK_RX_DONE_INT); + mtk_irq_disable(eth, ~0); mtk_w32(eth, RST_GL_PSE, MTK_RST_GL); mtk_w32(eth, 0, MTK_RST_GL); -- cgit v1.2.3 From 04698cccb1de54d5d97fda2e4a1c6ca365da0f70 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 10 Jun 2016 13:28:04 +0200 Subject: net: mediatek: fix threshold value MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The logic to calculate the threshold value for stopping the TX queue is bad. Currently it will always use 1/2 of the rings size, which is way too much. Set the threshold to MAX_SKB_FRAGS. This makes sure that the queue is stopped when there is not enough room to accept an additional segment.  Signed-off-by: John Crispin Signed-off-by: David S. Miller --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index e3dadae9f6dd..032939d211a7 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1033,8 +1033,7 @@ static int mtk_tx_alloc(struct mtk_eth *eth) atomic_set(&ring->free_count, MTK_DMA_SIZE - 2); ring->next_free = &ring->dma[0]; ring->last_free = &ring->dma[MTK_DMA_SIZE - 2]; - ring->thresh = max((unsigned long)MTK_DMA_SIZE >> 2, - MAX_SKB_FRAGS); + ring->thresh = MAX_SKB_FRAGS; /* make sure that all changes to the dma ring are flushed before we * continue -- cgit v1.2.3 From eaadf9fd3f6390f6ecbd0dfbd5997a0486fc9d5e Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 10 Jun 2016 13:28:05 +0200 Subject: net: mediatek: increase watchdog_timeo During stress testing, after reducing the threshold value, we have seen TX timeouts that were caused by the watchdog_timeo value being too low. Increase the value to 5 * HZ which is a value commonly used by many other drivers. Signed-off-by: John Crispin Signed-off-by: David S. Miller --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 032939d211a7..3b3ba2e55bdc 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1709,7 +1709,7 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np) mac->hw_stats->reg_offset = id * MTK_STAT_OFFSET; SET_NETDEV_DEV(eth->netdev[id], eth->dev); - eth->netdev[id]->watchdog_timeo = HZ; + eth->netdev[id]->watchdog_timeo = 5 * HZ; eth->netdev[id]->netdev_ops = &mtk_netdev_ops; eth->netdev[id]->base_addr = (unsigned long)eth->base; eth->netdev[id]->vlan_features = MTK_HW_FEATURES & -- cgit v1.2.3 From 12c97c13ea7174db5b5dc4a1ef91d4e9245bb569 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 10 Jun 2016 13:28:06 +0200 Subject: net: mediatek: fix off by one in the TX ring allocation The TX ring setup has an off by one error causing it to not utilise all descriptors. This has the side effect that we need to reset the next pointer at runtime to make it work. Fix the off by one and remove the code fixing the ring at runtime. Signed-off-by: John Crispin Signed-off-by: David S. Miller --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 3b3ba2e55bdc..c097e9e3926c 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -926,7 +926,6 @@ static int mtk_poll_tx(struct mtk_eth *eth, int budget, bool *tx_again) } mtk_tx_unmap(eth->dev, tx_buf); - ring->last_free->txd2 = next_cpu; ring->last_free = desc; atomic_inc(&ring->free_count); @@ -1032,7 +1031,7 @@ static int mtk_tx_alloc(struct mtk_eth *eth) atomic_set(&ring->free_count, MTK_DMA_SIZE - 2); ring->next_free = &ring->dma[0]; - ring->last_free = &ring->dma[MTK_DMA_SIZE - 2]; + ring->last_free = &ring->dma[MTK_DMA_SIZE - 1]; ring->thresh = MAX_SKB_FRAGS; /* make sure that all changes to the dma ring are flushed before we -- cgit v1.2.3 From ad3cba989e8b1bbefe078eece29f0e8d8aaea1d6 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 10 Jun 2016 13:28:07 +0200 Subject: net: mediatek: only wake the queue if it is stopped The current code unconditionally wakes up the queue at the end of each tx_poll action. Change the code to only wake up the queues if any of them have actually been stopped before. Signed-off-by: John Crispin Signed-off-by: David S. Miller --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index c097e9e3926c..40e37b158a69 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -704,6 +704,20 @@ static inline int mtk_cal_txd_req(struct sk_buff *skb) return nfrags; } +static int mtk_queue_stopped(struct mtk_eth *eth) +{ + int i; + + for (i = 0; i < MTK_MAC_COUNT; i++) { + if (!eth->netdev[i]) + continue; + if (netif_queue_stopped(eth->netdev[i])) + return 1; + } + + return 0; +} + static void mtk_wake_queue(struct mtk_eth *eth) { int i; @@ -950,7 +964,8 @@ static int mtk_poll_tx(struct mtk_eth *eth, int budget, bool *tx_again) if (!total) return 0; - if (atomic_read(&ring->free_count) > ring->thresh) + if (mtk_queue_stopped(eth) && + (atomic_read(&ring->free_count) > ring->thresh)) mtk_wake_queue(eth); return total; -- cgit v1.2.3 From 82c6544dddc6c4bd940917af2f987dee6be0fc17 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 10 Jun 2016 13:28:08 +0200 Subject: net: mediatek: remove superfluous queue wake up call The code checks if the queue should be stopped because we are below the threshold of free descriptors only to check if it should be started again. If we do end up in a state where we are at the threshold limit, it makes more sense to just stop the queue and wait for the next IRQ to trigger the TX housekeeping again. There is no rush in enqueuing the next packet, it needs to wait for all the others in the queue to be dispatched first anyway. Signed-off-by: John Crispin Signed-off-by: David S. Miller --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 40e37b158a69..d1cdc2d76151 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -783,12 +783,9 @@ static int mtk_start_xmit(struct sk_buff *skb, struct net_device *dev) if (mtk_tx_map(skb, dev, tx_num, ring, gso) < 0) goto drop; - if (unlikely(atomic_read(&ring->free_count) <= ring->thresh)) { + if (unlikely(atomic_read(&ring->free_count) <= ring->thresh)) mtk_stop_queue(eth); - if (unlikely(atomic_read(&ring->free_count) > - ring->thresh)) - mtk_wake_queue(eth); - } + spin_unlock_irqrestore(ð->page_lock, flags); return NETDEV_TX_OK; -- cgit v1.2.3 From a2f27217e4e60e663b5b971b0ccb287a9548b04e Mon Sep 17 00:00:00 2001 From: Manuel Lauss Date: Fri, 10 Jun 2016 16:53:05 +0200 Subject: net: au1000_eth: fix PHY detection Commit 7f854420fbfe9d49afe2ffb1df052cfe8e215541 ("phy: Add API for {un}registering an mdio device to a bus.") broke PHY detection on this driver with a copy-paste bug: The code is looking 32 times for a PHY at address 0. Fixes ethernet on AMD DB1100/DB1500/DB1550 boards which have their (autodetected) PHYs at address 31. Cc: Andrew Lunn Signed-off-by: Manuel Lauss Signed-off-by: David S. Miller --- drivers/net/ethernet/amd/au1000_eth.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/amd/au1000_eth.c b/drivers/net/ethernet/amd/au1000_eth.c index e0fb0f1122db..d8c77e8e25ed 100644 --- a/drivers/net/ethernet/amd/au1000_eth.c +++ b/drivers/net/ethernet/amd/au1000_eth.c @@ -508,13 +508,12 @@ static int au1000_mii_probe(struct net_device *dev) /* find the first (lowest address) PHY * on the current MAC's MII bus */ - for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) - if (mdiobus_get_phy(aup->mii_bus, aup->phy_addr)) { - phydev = mdiobus_get_phy(aup->mii_bus, aup->phy_addr); - if (!aup->phy_search_highest_addr) - /* break out with first one found */ - break; - } + for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { + phydev = mdiobus_get_phy(aup->mii_bus, phy_addr); + if (phydev && !aup->phy_search_highest_addr) + /* break out with first one found */ + break; + } if (aup->phy1_search_mac0) { /* try harder to find a PHY */ -- cgit v1.2.3 From 86c5fe4c932a8ef2d32f8b3d32cc9f0476fc54f3 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 10 Jun 2016 23:34:24 -0700 Subject: Revert "net: au1000_eth: fix PHY detection" This reverts commit a2f27217e4e60e663b5b971b0ccb287a9548b04e. I applied the wrong version of this. Signed-off-by: David S. Miller --- drivers/net/ethernet/amd/au1000_eth.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/amd/au1000_eth.c b/drivers/net/ethernet/amd/au1000_eth.c index d8c77e8e25ed..e0fb0f1122db 100644 --- a/drivers/net/ethernet/amd/au1000_eth.c +++ b/drivers/net/ethernet/amd/au1000_eth.c @@ -508,12 +508,13 @@ static int au1000_mii_probe(struct net_device *dev) /* find the first (lowest address) PHY * on the current MAC's MII bus */ - for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { - phydev = mdiobus_get_phy(aup->mii_bus, phy_addr); - if (phydev && !aup->phy_search_highest_addr) - /* break out with first one found */ - break; - } + for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) + if (mdiobus_get_phy(aup->mii_bus, aup->phy_addr)) { + phydev = mdiobus_get_phy(aup->mii_bus, aup->phy_addr); + if (!aup->phy_search_highest_addr) + /* break out with first one found */ + break; + } if (aup->phy1_search_mac0) { /* try harder to find a PHY */ -- cgit v1.2.3 From 92ca8241533009e4e05a9f3999a75389678af094 Mon Sep 17 00:00:00 2001 From: Manuel Lauss Date: Sat, 11 Jun 2016 00:13:04 +0200 Subject: net: au1000_eth: fix PHY detection Commit 7f854420fbfe9d49afe2ffb1df052cfe8e215541 ("phy: Add API for {un}registering an mdio device to a bus.") broke PHY detection on this driver with a copy-paste bug: The code is looking 32 times for a PHY at address 0. Fixes ethernet on AMD DB1100/DB1500/DB1550 boards which have their (autodetected) PHYs at address 31. Cc: Andrew Lunn Signed-off-by: Manuel Lauss Signed-off-by: David S. Miller --- drivers/net/ethernet/amd/au1000_eth.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/amd/au1000_eth.c b/drivers/net/ethernet/amd/au1000_eth.c index e0fb0f1122db..20760e10211a 100644 --- a/drivers/net/ethernet/amd/au1000_eth.c +++ b/drivers/net/ethernet/amd/au1000_eth.c @@ -509,8 +509,8 @@ static int au1000_mii_probe(struct net_device *dev) * on the current MAC's MII bus */ for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) - if (mdiobus_get_phy(aup->mii_bus, aup->phy_addr)) { - phydev = mdiobus_get_phy(aup->mii_bus, aup->phy_addr); + if (mdiobus_get_phy(aup->mii_bus, phy_addr)) { + phydev = mdiobus_get_phy(aup->mii_bus, phy_addr); if (!aup->phy_search_highest_addr) /* break out with first one found */ break; -- cgit v1.2.3 From 6e85dbe4b461e59fa3cad6f6235cb47fa4c6a629 Mon Sep 17 00:00:00 2001 From: Crestez Dan Leonard Date: Fri, 3 Jun 2016 21:30:24 +0300 Subject: iio: inv_mpu6050: Fix use-after-free in ACPI code In some cases this can result in incorrectly returning a negative value from asus_acpi_get_sensor_info and the AK8963 magnetometer failing to show up. Note cpm is an alias for buffer.pointer which isn't apparent in this patch on it's own. Cc: Srinivas Pandruvada Signed-off-by: Crestez Dan Leonard Acked-by: Daniel Baluta Signed-off-by: Jonathan Cameron --- drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c index f62b8bd9ad7e..dd6fc6d21f9d 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c @@ -56,6 +56,7 @@ static int asus_acpi_get_sensor_info(struct acpi_device *adev, int i; acpi_status status; union acpi_object *cpm; + int ret; status = acpi_evaluate_object(adev->handle, "CNF0", NULL, &buffer); if (ACPI_FAILURE(status)) @@ -82,10 +83,10 @@ static int asus_acpi_get_sensor_info(struct acpi_device *adev, } } } - + ret = cpm->package.count; kfree(buffer.pointer); - return cpm->package.count; + return ret; } static int acpi_i2c_check_resource(struct acpi_resource *ares, void *data) -- cgit v1.2.3 From 7e982555d89cc84b1fa23b5d54c7ffd9f7753908 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 30 May 2016 15:50:24 +0200 Subject: staging: iio: fix ad7606_spi regression MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit As pointed out by Geert Uytterhoeven, the patch was incorrect and breaks the driver, which was fortunately pointed out by this gcc warning: drivers/staging/iio/adc/ad7606_spi.c: In function ‘ad7606_spi_read_block’: drivers/staging/iio/adc/ad7606_spi.c:34: warning: ‘data’ is used uninitialized in this function The effect of the patch is that the data is copied into a random memory location (from the uninitialized pointer) instead of being byteswapped in place. This adds the initialization for the 'data' variable back to restore the original behavior. Cc: Ksenija Stanojevic Fixes: 87787e5ef727 ("Staging: iio: Fix sparse endian warning") Signed-off-by: Arnd Bergmann Acked-by: Geert Uytterhoeven Signed-off-by: Jonathan Cameron --- drivers/staging/iio/adc/ad7606_spi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/iio/adc/ad7606_spi.c b/drivers/staging/iio/adc/ad7606_spi.c index 825da0769936..9587fa86dc69 100644 --- a/drivers/staging/iio/adc/ad7606_spi.c +++ b/drivers/staging/iio/adc/ad7606_spi.c @@ -21,7 +21,7 @@ static int ad7606_spi_read_block(struct device *dev, { struct spi_device *spi = to_spi_device(dev); int i, ret; - unsigned short *data; + unsigned short *data = buf; __be16 *bdata = buf; ret = spi_read(spi, buf, count * 2); -- cgit v1.2.3 From f4070a19142d5ee06f0da0cef56a0e78995f172c Mon Sep 17 00:00:00 2001 From: Luis de Bethencourt Date: Wed, 1 Jun 2016 20:25:54 +0100 Subject: staging: iio: ad5933: fix order of cycle conditions Correctly handle the settling time cycles value. The else branch is an impossible condition, > 1022 in the else branch of > 511. Flipping the order. Based on the Table 13 at the bottom of Page 25 of the Data Sheet: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5933.pdf Signed-off-by: Luis de Bethencourt Reviewed-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- drivers/staging/iio/impedance-analyzer/ad5933.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c index 9f43976f4ef2..170ac980abcb 100644 --- a/drivers/staging/iio/impedance-analyzer/ad5933.c +++ b/drivers/staging/iio/impedance-analyzer/ad5933.c @@ -444,10 +444,10 @@ static ssize_t ad5933_store(struct device *dev, st->settling_cycles = val; /* 2x, 4x handling, see datasheet */ - if (val > 511) - val = (val >> 1) | (1 << 9); - else if (val > 1022) + if (val > 1022) val = (val >> 2) | (3 << 9); + else if (val > 511) + val = (val >> 1) | (1 << 9); dat = cpu_to_be16(val); ret = ad5933_i2c_write(st->client, -- cgit v1.2.3 From 86ef7f9cbfd564377028098cf20cc1c3ec2c776d Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sat, 11 Jun 2016 20:40:24 -0700 Subject: ipconfig: Protect ic_addrservaddr with IPCONFIG_DYNAMIC. >> net/ipv4/ipconfig.c:130:15: warning: 'ic_addrservaddr' defined but not used [-Wunused-variable] static __be32 ic_addrservaddr = NONE; /* IP Address of the IP addresses'server */ Reported-by: kbuild test robot Signed-off-by: David S. Miller --- net/ipv4/ipconfig.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c index eccf9fd190c0..1d71c40eaaf3 100644 --- a/net/ipv4/ipconfig.c +++ b/net/ipv4/ipconfig.c @@ -127,7 +127,9 @@ __be32 ic_myaddr = NONE; /* My IP address */ static __be32 ic_netmask = NONE; /* Netmask for local subnet */ __be32 ic_gateway = NONE; /* Gateway IP address */ +#ifdef IPCONFIG_DYNAMIC static __be32 ic_addrservaddr = NONE; /* IP Address of the IP addresses'server */ +#endif __be32 ic_servaddr = NONE; /* Boot server IP address */ -- cgit v1.2.3 From cbdf451164785c9cf5acd5d2983c1e7c778df4c1 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 12 Jun 2016 16:21:47 -0700 Subject: net_sched: prio: properly report out of memory errors At Qdisc creation or change time, prio_tune() creates missing pfifo qdiscs but does not return an error code if one qdisc could not be allocated. Leaving a qdisc in non operational state without telling user anything about this problem is not good. Also, testing if we replace something different than noop_qdisc a second time makes no sense so I removed useless code. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/sched/sch_prio.c | 32 ++++++++++++-------------------- 1 file changed, 12 insertions(+), 20 deletions(-) diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c index 4b0a82191bc4..071718bccdab 100644 --- a/net/sched/sch_prio.c +++ b/net/sched/sch_prio.c @@ -202,26 +202,18 @@ static int prio_tune(struct Qdisc *sch, struct nlattr *opt) sch_tree_unlock(sch); for (i = 0; i < q->bands; i++) { - if (q->queues[i] == &noop_qdisc) { - struct Qdisc *child, *old; - - child = qdisc_create_dflt(sch->dev_queue, - &pfifo_qdisc_ops, - TC_H_MAKE(sch->handle, i + 1)); - if (child) { - sch_tree_lock(sch); - old = q->queues[i]; - q->queues[i] = child; - - if (old != &noop_qdisc) { - qdisc_tree_reduce_backlog(old, - old->q.qlen, - old->qstats.backlog); - qdisc_destroy(old); - } - sch_tree_unlock(sch); - } - } + struct Qdisc *child; + + if (q->queues[i] != &noop_qdisc) + continue; + + child = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops, + TC_H_MAKE(sch->handle, i + 1)); + if (!child) + return -ENOMEM; + sch_tree_lock(sch); + q->queues[i] = child; + sch_tree_unlock(sch); } return 0; } -- cgit v1.2.3 From d941ebe88a411aa281cc80477a93feb931a1b50b Mon Sep 17 00:00:00 2001 From: Ivan Khoronzhuk Date: Sat, 11 Jun 2016 01:11:54 +0300 Subject: net: ethernet: ti: cpsw: use destroy ctlr to destroy channels There is no reason to destroy channels that are destroyed while cpdma_ctlr destroy. In this case no need to remember how much channels where created and destroy them by one, as cpdma_ctlr destroys all of them. Signed-off-by: Ivan Khoronzhuk Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpsw.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index e6bb0ecb12c7..53190894f17a 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -2505,8 +2505,6 @@ static int cpsw_probe(struct platform_device *pdev) clean_ale_ret: cpsw_ale_destroy(priv->ale); clean_dma_ret: - cpdma_chan_destroy(priv->txch); - cpdma_chan_destroy(priv->rxch); cpdma_ctlr_destroy(priv->dma); clean_runtime_disable_ret: pm_runtime_disable(&pdev->dev); @@ -2534,8 +2532,6 @@ static int cpsw_remove(struct platform_device *pdev) unregister_netdev(ndev); cpsw_ale_destroy(priv->ale); - cpdma_chan_destroy(priv->txch); - cpdma_chan_destroy(priv->rxch); cpdma_ctlr_destroy(priv->dma); pm_runtime_disable(&pdev->dev); device_for_each_child(&pdev->dev, NULL, cpsw_remove_child_device); -- cgit v1.2.3 From 975f57fdff1d0eb9816806cabd27162a8a1a4038 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Fri, 10 Jun 2016 16:47:02 +1000 Subject: crypto: vmx - Fix ABI detection When calling ppc-xlate.pl, we pass it either linux-ppc64 or linux-ppc64le. The script however was expecting linux64le, a result of its OpenSSL origins. This means we aren't obeying the ppc64le ABIv2 rules. Fix this by checking for linux-ppc64le. Fixes: 5ca55738201c ("crypto: vmx - comply with ABIs that specify vrsave as reserved.") Cc: stable@vger.kernel.org Signed-off-by: Anton Blanchard Signed-off-by: Herbert Xu --- drivers/crypto/vmx/ppc-xlate.pl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/vmx/ppc-xlate.pl b/drivers/crypto/vmx/ppc-xlate.pl index 9f4994cabcc7..b18e67d0e065 100644 --- a/drivers/crypto/vmx/ppc-xlate.pl +++ b/drivers/crypto/vmx/ppc-xlate.pl @@ -141,7 +141,7 @@ my $vmr = sub { # Some ABIs specify vrsave, special-purpose register #256, as reserved # for system use. -my $no_vrsave = ($flavour =~ /aix|linux64le/); +my $no_vrsave = ($flavour =~ /linux-ppc64le/); my $mtspr = sub { my ($f,$idx,$ra) = @_; if ($idx == 256 && $no_vrsave) { -- cgit v1.2.3 From 12d3f49e1ffbbf8cbbb60acae5a21103c5c841ac Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Fri, 10 Jun 2016 16:47:03 +1000 Subject: crypto: vmx - Increase priority of aes-cbc cipher All of the VMX AES ciphers (AES, AES-CBC and AES-CTR) are set at priority 1000. Unfortunately this means we never use AES-CBC and AES-CTR, because the base AES-CBC cipher that is implemented on top of AES inherits its priority. To fix this, AES-CBC and AES-CTR have to be a higher priority. Set them to 2000. Testing on a POWER8 with: cryptsetup benchmark --cipher aes --key-size 256 Shows decryption speed increase from 402.4 MB/s to 3069.2 MB/s, over 7x faster. Thanks to Mike Strosaker for helping me debug this issue. Fixes: 8c755ace357c ("crypto: vmx - Adding CBC routines for VMX module") Cc: stable@vger.kernel.org Signed-off-by: Anton Blanchard Signed-off-by: Herbert Xu --- drivers/crypto/vmx/aes_cbc.c | 2 +- drivers/crypto/vmx/aes_ctr.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/vmx/aes_cbc.c b/drivers/crypto/vmx/aes_cbc.c index 495577b6d31b..94ad5c0adbcb 100644 --- a/drivers/crypto/vmx/aes_cbc.c +++ b/drivers/crypto/vmx/aes_cbc.c @@ -182,7 +182,7 @@ struct crypto_alg p8_aes_cbc_alg = { .cra_name = "cbc(aes)", .cra_driver_name = "p8_aes_cbc", .cra_module = THIS_MODULE, - .cra_priority = 1000, + .cra_priority = 2000, .cra_type = &crypto_blkcipher_type, .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | CRYPTO_ALG_NEED_FALLBACK, .cra_alignmask = 0, diff --git a/drivers/crypto/vmx/aes_ctr.c b/drivers/crypto/vmx/aes_ctr.c index 0a3c1b04cf3c..38ed10d761d0 100644 --- a/drivers/crypto/vmx/aes_ctr.c +++ b/drivers/crypto/vmx/aes_ctr.c @@ -166,7 +166,7 @@ struct crypto_alg p8_aes_ctr_alg = { .cra_name = "ctr(aes)", .cra_driver_name = "p8_aes_ctr", .cra_module = THIS_MODULE, - .cra_priority = 1000, + .cra_priority = 2000, .cra_type = &crypto_blkcipher_type, .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | CRYPTO_ALG_NEED_FALLBACK, .cra_alignmask = 0, -- cgit v1.2.3 From 19ced623db2fe91604d69f7d86b03144c5107739 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 8 Jun 2016 14:56:39 +0200 Subject: crypto: ux500 - memmove the right size The hash buffer is really HASH_BLOCK_SIZE bytes, someone must have thought that memmove takes n*u32 words by mistake. Tests work as good/bad as before after this patch. Cc: Joakim Bech Cc: stable@vger.kernel.org Reported-by: David Binderman Signed-off-by: Linus Walleij Signed-off-by: Herbert Xu --- drivers/crypto/ux500/hash/hash_core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/ux500/hash/hash_core.c b/drivers/crypto/ux500/hash/hash_core.c index 574e87c7f2b8..9acccad26928 100644 --- a/drivers/crypto/ux500/hash/hash_core.c +++ b/drivers/crypto/ux500/hash/hash_core.c @@ -781,7 +781,7 @@ static int hash_process_data(struct hash_device_data *device_data, &device_data->state); memmove(req_ctx->state.buffer, device_data->state.buffer, - HASH_BLOCK_SIZE / sizeof(u32)); + HASH_BLOCK_SIZE); if (ret) { dev_err(device_data->dev, "%s: hash_resume_state() failed!\n", @@ -832,7 +832,7 @@ static int hash_process_data(struct hash_device_data *device_data, memmove(device_data->state.buffer, req_ctx->state.buffer, - HASH_BLOCK_SIZE / sizeof(u32)); + HASH_BLOCK_SIZE); if (ret) { dev_err(device_data->dev, "%s: hash_save_state() failed!\n", __func__); -- cgit v1.2.3 From ea1d39a31d3b1b6060b6e83e5a29c069a124c68a Mon Sep 17 00:00:00 2001 From: Oscar Date: Tue, 14 Jun 2016 14:14:35 +0800 Subject: usb: common: otg-fsm: add license to usb-otg-fsm Fix warning about tainted kernel because usb-otg-fsm has no license. WARNING: with this patch usb-otg-fsm module can be loaded but then the kernel will hang. Tested with a udoo quad board. Cc: #v4.1+ Signed-off-by: Oscar Signed-off-by: Peter Chen --- drivers/usb/common/usb-otg-fsm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/common/usb-otg-fsm.c b/drivers/usb/common/usb-otg-fsm.c index 9059b7dc185e..2f537bbdda09 100644 --- a/drivers/usb/common/usb-otg-fsm.c +++ b/drivers/usb/common/usb-otg-fsm.c @@ -21,6 +21,7 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. */ +#include #include #include #include @@ -450,3 +451,4 @@ int otg_statemachine(struct otg_fsm *fsm) return fsm->state_changed; } EXPORT_SYMBOL_GPL(otg_statemachine); +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From 6d9fe44bd73d567d04d3a68a2d2fa521ab9532f2 Mon Sep 17 00:00:00 2001 From: Michal Suchanek Date: Mon, 13 Jun 2016 17:46:49 +0000 Subject: spi: sun4i: fix FIFO limit When testing SPI without DMA I noticed that filling the FIFO on the spi controller causes timeout. Always leave room for one byte in the FIFO. Signed-off-by: Michal Suchanek Acked-by: Maxime Ripard Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-sun4i.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-sun4i.c b/drivers/spi/spi-sun4i.c index 1ddd9e2309b6..e7e4aecb3295 100644 --- a/drivers/spi/spi-sun4i.c +++ b/drivers/spi/spi-sun4i.c @@ -179,7 +179,10 @@ static int sun4i_spi_transfer_one(struct spi_master *master, /* We don't support transfer larger than the FIFO */ if (tfr->len > SUN4I_FIFO_DEPTH) - return -EINVAL; + return -EMSGSIZE; + + if (tfr->tx_buf && tfr->len >= SUN4I_FIFO_DEPTH) + return -EMSGSIZE; reinit_completion(&sspi->done); sspi->tx_buf = tfr->tx_buf; @@ -269,8 +272,12 @@ static int sun4i_spi_transfer_one(struct spi_master *master, sun4i_spi_write(sspi, SUN4I_BURST_CNT_REG, SUN4I_BURST_CNT(tfr->len)); sun4i_spi_write(sspi, SUN4I_XMIT_CNT_REG, SUN4I_XMIT_CNT(tx_len)); - /* Fill the TX FIFO */ - sun4i_spi_fill_fifo(sspi, SUN4I_FIFO_DEPTH); + /* + * Fill the TX FIFO + * Filling the FIFO fully causes timeout for some reason + * at least on spi2 on A10s + */ + sun4i_spi_fill_fifo(sspi, SUN4I_FIFO_DEPTH - 1); /* Enable the interrupts */ sun4i_spi_write(sspi, SUN4I_INT_CTL_REG, SUN4I_INT_CTL_TC); -- cgit v1.2.3 From 719bd6542044efd9b338a53dba1bef45f40ca169 Mon Sep 17 00:00:00 2001 From: Michal Suchanek Date: Mon, 13 Jun 2016 17:46:49 +0000 Subject: spi: sunxi: fix transfer timeout The trasfer timeout is fixed at 1000 ms. Reading a 4Mbyte flash over 1MHz SPI bus takes way longer than that. Calculate the timeout from the actual time the transfer is supposed to take and multiply by 2 for good measure. Signed-off-by: Michal Suchanek Acked-by: Maxime Ripard Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-sun4i.c | 10 +++++++++- drivers/spi/spi-sun6i.c | 10 +++++++++- 2 files changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-sun4i.c b/drivers/spi/spi-sun4i.c index e7e4aecb3295..cf007f3b83ec 100644 --- a/drivers/spi/spi-sun4i.c +++ b/drivers/spi/spi-sun4i.c @@ -173,6 +173,7 @@ static int sun4i_spi_transfer_one(struct spi_master *master, { struct sun4i_spi *sspi = spi_master_get_devdata(master); unsigned int mclk_rate, div, timeout; + unsigned int start, end, tx_time; unsigned int tx_len = 0; int ret = 0; u32 reg; @@ -286,9 +287,16 @@ static int sun4i_spi_transfer_one(struct spi_master *master, reg = sun4i_spi_read(sspi, SUN4I_CTL_REG); sun4i_spi_write(sspi, SUN4I_CTL_REG, reg | SUN4I_CTL_XCH); + tx_time = max(tfr->len * 8 * 2 / (tfr->speed_hz / 1000), 100U); + start = jiffies; timeout = wait_for_completion_timeout(&sspi->done, - msecs_to_jiffies(1000)); + msecs_to_jiffies(tx_time)); + end = jiffies; if (!timeout) { + dev_warn(&master->dev, + "%s: timeout transferring %u bytes@%iHz for %i(%i)ms", + dev_name(&spi->dev), tfr->len, tfr->speed_hz, + jiffies_to_msecs(end - start), tx_time); ret = -ETIMEDOUT; goto out; } diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c index 42e2c4bd690a..7fce79a60608 100644 --- a/drivers/spi/spi-sun6i.c +++ b/drivers/spi/spi-sun6i.c @@ -160,6 +160,7 @@ static int sun6i_spi_transfer_one(struct spi_master *master, { struct sun6i_spi *sspi = spi_master_get_devdata(master); unsigned int mclk_rate, div, timeout; + unsigned int start, end, tx_time; unsigned int tx_len = 0; int ret = 0; u32 reg; @@ -269,9 +270,16 @@ static int sun6i_spi_transfer_one(struct spi_master *master, reg = sun6i_spi_read(sspi, SUN6I_TFR_CTL_REG); sun6i_spi_write(sspi, SUN6I_TFR_CTL_REG, reg | SUN6I_TFR_CTL_XCH); + tx_time = max(tfr->len * 8 * 2 / (tfr->speed_hz / 1000), 100U); + start = jiffies; timeout = wait_for_completion_timeout(&sspi->done, - msecs_to_jiffies(1000)); + msecs_to_jiffies(tx_time)); + end = jiffies; if (!timeout) { + dev_warn(&master->dev, + "%s: timeout transferring %u bytes@%iHz for %i(%i)ms", + dev_name(&spi->dev), tfr->len, tfr->speed_hz, + jiffies_to_msecs(end - start), tx_time); ret = -ETIMEDOUT; goto out; } -- cgit v1.2.3 From e50525bef593c3dd0564df676c567d77f7c20322 Mon Sep 17 00:00:00 2001 From: Rajkumar Manoharan Date: Thu, 9 Jun 2016 11:33:55 +0530 Subject: ath10k: fix deadlock while processing rx_in_ord_ind commit 5c86d97bcc1d ("ath10k: combine txrx and replenish task") introduced deadlock while processing rx in order indication message for qca6174 based devices. While merging replenish and txrx tasklets, replenish task should be called out of htt rx ring locking since it is also try to acquire the same lock. Unfortunately this issue is not exposed by other solutions (qca988x, qca99x0 & qca4019), as rx_in_ord_ind message is specific to qca6174 based devices. This patch fixes ============================================= [ INFO: possible recursive locking detected ] 4.7.0-rc2-wt-ath+ #1353 Tainted: G E --------------------------------------------- swapper/3/0 is trying to acquire lock: (&(&htt->rx_ring.lock)->rlock){+.-...}, at: [] ath10k_htt_rx_msdu_buff_replenish+0x29/0x90 [ath10k_core] but task is already holding lock: (&(&htt->rx_ring.lock)->rlock){+.-...}, at: [] ath10k_htt_txrx_compl_task+0x21b/0x250 [ath10k_core] other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&(&htt->rx_ring.lock)->rlock); lock(&(&htt->rx_ring.lock)->rlock); *** DEADLOCK *** May be due to missing lock nesting notation 1 lock held by swapper/3/0: #0: (&(&htt->rx_ring.lock)->rlock){+.-...}, at: [] ath10k_htt_txrx_compl_task+0x21b/0x250 [ath10k_core] Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=119151 Fixes: 5c86d97bcc1d ("ath10k: combine txrx and replenish task") Reported-by: Mike Lothian Signed-off-by: Rajkumar Manoharan Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/htt_rx.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index cc979a4faeb0..813cdd2621a1 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -1904,7 +1904,6 @@ static void ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb) return; } } - ath10k_htt_rx_msdu_buff_replenish(htt); } static void ath10k_htt_rx_tx_fetch_resp_id_confirm(struct ath10k *ar, -- cgit v1.2.3 From e024111f6946f45cf1559a8c6fd48d2d0f696d07 Mon Sep 17 00:00:00 2001 From: Miaoqing Pan Date: Tue, 7 Jun 2016 15:47:07 +0300 Subject: ath9k: fix GPIO mask for AR9462 and AR9565 The incorrect GPIO mask cause kernel warning, when AR9462 access GPIO11. Also fix the mask for AR9565. WARNING: CPU: 1 PID: 199 at ../drivers/net/wireless/ath/ath9k/hw.c:2778 ath9k_hw_gpio_get+0x1a9/0x1b0 [ath9k_hw] CPU: 1 PID: 199 Comm: kworker/u16:9 Not tainted 4.7.0-rc1-next-20160530+ #5 Hardware name: Acer TravelMate P243/BA40_HC, BIOS V1.01 04/20/2012 Workqueue: events_power_efficient rfkill_poll 0000000000000000 ffff88002cf73d28 ffffffff813b8ddc 0000000000000000 0000000000000000 ffff88002cf73d68 ffffffff8107a331 00000ada00000086 ffff880148d9c018 000000000000000b ffff880147e68720 0000000000000200 Call Trace: [] dump_stack+0x63/0x87 [] __warn+0xd1/0xf0 [] warn_slowpath_null+0x1d/0x20 [] ath9k_hw_gpio_get+0x1a9/0x1b0 [ath9k_hw] [] ath9k_rfkill_poll_state+0x34/0x60 [ath9k] [] ieee80211_rfkill_poll+0x33/0x40 [mac80211] [] cfg80211_rfkill_poll+0x2a/0xc0 [cfg80211] [] rfkill_poll+0x24/0x50 [] process_one_work+0x153/0x3f0 [] worker_thread+0x12b/0x4b0 [] ? rescuer_thread+0x340/0x340 [] kthread+0xc9/0xe0 [] ret_from_fork+0x1f/0x40 [] ? kthread_park+0x60/0x60 Fixes: a01ab81b09c5 ("ath9k: define correct GPIO numbers and bits mask") Reported-by: Sudip Mukherjee Tested-by: Sudip Mukherjee Signed-off-by: Miaoqing Pan Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath9k/reg.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h index 9272ca90632b..80ff69f99229 100644 --- a/drivers/net/wireless/ath/ath9k/reg.h +++ b/drivers/net/wireless/ath/ath9k/reg.h @@ -1122,12 +1122,12 @@ enum { #define AR9300_NUM_GPIO 16 #define AR9330_NUM_GPIO 16 #define AR9340_NUM_GPIO 23 -#define AR9462_NUM_GPIO 10 +#define AR9462_NUM_GPIO 14 #define AR9485_NUM_GPIO 12 #define AR9531_NUM_GPIO 18 #define AR9550_NUM_GPIO 24 #define AR9561_NUM_GPIO 23 -#define AR9565_NUM_GPIO 12 +#define AR9565_NUM_GPIO 14 #define AR9580_NUM_GPIO 16 #define AR7010_NUM_GPIO 16 @@ -1139,12 +1139,12 @@ enum { #define AR9300_GPIO_MASK 0x0000F4FF #define AR9330_GPIO_MASK 0x0000F4FF #define AR9340_GPIO_MASK 0x0000000F -#define AR9462_GPIO_MASK 0x000003FF +#define AR9462_GPIO_MASK 0x00003FFF #define AR9485_GPIO_MASK 0x00000FFF #define AR9531_GPIO_MASK 0x0000000F #define AR9550_GPIO_MASK 0x0000000F #define AR9561_GPIO_MASK 0x0000000F -#define AR9565_GPIO_MASK 0x00000FFF +#define AR9565_GPIO_MASK 0x00003FFF #define AR9580_GPIO_MASK 0x0000F4FF #define AR7010_GPIO_MASK 0x0000FFFF -- cgit v1.2.3 From 5bc28b93a36e3cb3acc2870fb75cb6ffb182fece Mon Sep 17 00:00:00 2001 From: Rhyland Klein Date: Thu, 9 Jun 2016 17:28:39 -0400 Subject: power_supply: power_supply_read_temp only if use_cnt > 0 Change power_supply_read_temp() to use power_supply_get_property() so that it will check the use_cnt and ensure it is > 0. The use_cnt will be incremented at the end of __power_supply_register, so this will block to case where get_property can be called before the supply is fully registered. This fixes the issue show in the stack below: [ 1.452598] power_supply_read_temp+0x78/0x80 [ 1.458680] thermal_zone_get_temp+0x5c/0x11c [ 1.464765] thermal_zone_device_update+0x34/0xb4 [ 1.471195] thermal_zone_device_register+0x87c/0x8cc [ 1.477974] __power_supply_register+0x364/0x424 [ 1.484317] power_supply_register_no_ws+0x10/0x18 [ 1.490833] bq27xxx_battery_setup+0x10c/0x164 [ 1.497003] bq27xxx_battery_i2c_probe+0xd0/0x1b0 [ 1.503435] i2c_device_probe+0x174/0x240 [ 1.509172] driver_probe_device+0x1fc/0x29c [ 1.515167] __driver_attach+0xa4/0xa8 [ 1.520643] bus_for_each_dev+0x58/0x98 [ 1.526204] driver_attach+0x20/0x28 [ 1.531505] bus_add_driver+0x1c8/0x22c [ 1.537067] driver_register+0x68/0x108 [ 1.542630] i2c_register_driver+0x38/0x7c [ 1.548457] bq27xxx_battery_i2c_driver_init+0x18/0x20 [ 1.555321] do_one_initcall+0x38/0x12c [ 1.560886] kernel_init_freeable+0x148/0x1ec [ 1.566972] kernel_init+0x10/0xfc [ 1.572101] ret_from_fork+0x10/0x40 Also make the same change to ps_get_max_charge_cntl_limit() and ps_get_cur_chrage_cntl_limit() to be safe. Lastly, change the return value of power_supply_get_property() to -EAGAIN from -ENODEV if use_cnt <= 0. Fixes: 297d716f6260 ("power_supply: Change ownership from driver to core") Cc: stable@vger.kernel.org Signed-off-by: Rhyland Klein Reviewed-by: Krzysztof Kozlowski Signed-off-by: Sebastian Reichel --- drivers/power/power_supply_core.c | 27 ++++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-) diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c index 456987c88baa..b13cd074c52a 100644 --- a/drivers/power/power_supply_core.c +++ b/drivers/power/power_supply_core.c @@ -565,11 +565,12 @@ static int power_supply_read_temp(struct thermal_zone_device *tzd, WARN_ON(tzd == NULL); psy = tzd->devdata; - ret = psy->desc->get_property(psy, POWER_SUPPLY_PROP_TEMP, &val); + ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_TEMP, &val); + if (ret) + return ret; /* Convert tenths of degree Celsius to milli degree Celsius. */ - if (!ret) - *temp = val.intval * 100; + *temp = val.intval * 100; return ret; } @@ -612,10 +613,12 @@ static int ps_get_max_charge_cntl_limit(struct thermal_cooling_device *tcd, int ret; psy = tcd->devdata; - ret = psy->desc->get_property(psy, - POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, &val); - if (!ret) - *state = val.intval; + ret = power_supply_get_property(psy, + POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, &val); + if (ret) + return ret; + + *state = val.intval; return ret; } @@ -628,10 +631,12 @@ static int ps_get_cur_chrage_cntl_limit(struct thermal_cooling_device *tcd, int ret; psy = tcd->devdata; - ret = psy->desc->get_property(psy, - POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, &val); - if (!ret) - *state = val.intval; + ret = power_supply_get_property(psy, + POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, &val); + if (ret) + return ret; + + *state = val.intval; return ret; } -- cgit v1.2.3 From fdecf36fcefa9f48c2f2de21c8176f1a8ce2c960 Mon Sep 17 00:00:00 2001 From: Clemens Gruber Date: Sat, 11 Jun 2016 17:21:26 +0200 Subject: phy: marvell: fix LED configuration via marvell,reg-init Configuring the PHY LED registers for the Marvell 88E1510 and others is not possible, because regardless of the values in marvell,reg-init, it is later overridden in m88e1121_config_aneg with a non-standard default. This patch moves that default configuration to .config_init to allow setting the LED configuration through marvell,reg-init in the device tree, which should override said default if it exists. Signed-off-by: Clemens Gruber Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- drivers/net/phy/marvell.c | 38 ++++++++++++++++++++++++++------------ 1 file changed, 26 insertions(+), 12 deletions(-) diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c index 280e8795b463..79ccc11facc3 100644 --- a/drivers/net/phy/marvell.c +++ b/drivers/net/phy/marvell.c @@ -407,15 +407,7 @@ static int m88e1121_config_aneg(struct phy_device *phydev) if (err < 0) return err; - oldpage = phy_read(phydev, MII_MARVELL_PHY_PAGE); - - phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_88E1121_PHY_LED_PAGE); - phy_write(phydev, MII_88E1121_PHY_LED_CTRL, MII_88E1121_PHY_LED_DEF); - phy_write(phydev, MII_MARVELL_PHY_PAGE, oldpage); - - err = genphy_config_aneg(phydev); - - return err; + return genphy_config_aneg(phydev); } static int m88e1318_config_aneg(struct phy_device *phydev) @@ -636,6 +628,28 @@ static int m88e1111_config_init(struct phy_device *phydev) return phy_write(phydev, MII_BMCR, BMCR_RESET); } +static int m88e1121_config_init(struct phy_device *phydev) +{ + int err, oldpage; + + oldpage = phy_read(phydev, MII_MARVELL_PHY_PAGE); + + err = phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_88E1121_PHY_LED_PAGE); + if (err < 0) + return err; + + /* Default PHY LED config: LED[0] .. Link, LED[1] .. Activity */ + err = phy_write(phydev, MII_88E1121_PHY_LED_CTRL, + MII_88E1121_PHY_LED_DEF); + if (err < 0) + return err; + + phy_write(phydev, MII_MARVELL_PHY_PAGE, oldpage); + + /* Set marvell,reg-init configuration from device tree */ + return marvell_config_init(phydev); +} + static int m88e1510_config_init(struct phy_device *phydev) { int err; @@ -668,7 +682,7 @@ static int m88e1510_config_init(struct phy_device *phydev) return err; } - return marvell_config_init(phydev); + return m88e1121_config_init(phydev); } static int m88e1118_config_aneg(struct phy_device *phydev) @@ -1196,7 +1210,7 @@ static struct phy_driver marvell_drivers[] = { .features = PHY_GBIT_FEATURES, .flags = PHY_HAS_INTERRUPT, .probe = marvell_probe, - .config_init = &marvell_config_init, + .config_init = &m88e1121_config_init, .config_aneg = &m88e1121_config_aneg, .read_status = &marvell_read_status, .ack_interrupt = &marvell_ack_interrupt, @@ -1215,7 +1229,7 @@ static struct phy_driver marvell_drivers[] = { .features = PHY_GBIT_FEATURES, .flags = PHY_HAS_INTERRUPT, .probe = marvell_probe, - .config_init = &marvell_config_init, + .config_init = &m88e1121_config_init, .config_aneg = &m88e1318_config_aneg, .read_status = &marvell_read_status, .ack_interrupt = &marvell_ack_interrupt, -- cgit v1.2.3 From dcb94b88c09ce82a80e188d49bcffdc83ba215a6 Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Sat, 11 Jun 2016 20:32:06 +0200 Subject: ipv6: fix endianness error in icmpv6_err IPv6 ping socket error handler doesn't correctly convert the new 32 bit mtu to host endianness before using. Cc: Lorenzo Colitti Fixes: 6d0bfe22611602f ("net: ipv6: Add IPv6 support to the ping socket.") Signed-off-by: Hannes Frederic Sowa Acked-by: Lorenzo Colitti Signed-off-by: David S. Miller --- net/ipv6/icmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 4527285fcaa2..a4fa84076969 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -98,7 +98,7 @@ static void icmpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, if (!(type & ICMPV6_INFOMSG_MASK)) if (icmp6->icmp6_type == ICMPV6_ECHO_REQUEST) - ping_err(skb, offset, info); + ping_err(skb, offset, ntohl(info)); } static int icmpv6_rcv(struct sk_buff *skb); -- cgit v1.2.3 From 5119bd16815d3f0364390a1369392dcc036790e7 Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Sat, 11 Jun 2016 20:41:38 +0200 Subject: ipv6: tcp: fix endianness annotation in tcp_v6_send_response Cc: Florent Fourcot Fixes: 1d13a96c74fc ("ipv6: tcp: fix flowlabel value in ACK messages send from TIME_WAIT") Signed-off-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- net/ipv6/tcp_ipv6.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index f36c2d076fce..2255d2bf5f6b 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -738,7 +738,7 @@ static const struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = { static void tcp_v6_send_response(const struct sock *sk, struct sk_buff *skb, u32 seq, u32 ack, u32 win, u32 tsval, u32 tsecr, int oif, struct tcp_md5sig_key *key, int rst, - u8 tclass, u32 label) + u8 tclass, __be32 label) { const struct tcphdr *th = tcp_hdr(skb); struct tcphdr *t1; @@ -911,7 +911,7 @@ out: static void tcp_v6_send_ack(const struct sock *sk, struct sk_buff *skb, u32 seq, u32 ack, u32 win, u32 tsval, u32 tsecr, int oif, struct tcp_md5sig_key *key, u8 tclass, - u32 label) + __be32 label) { tcp_v6_send_response(sk, skb, seq, ack, win, tsval, tsecr, oif, key, 0, tclass, label); -- cgit v1.2.3 From c148d16369ff0095eca950d17968ba1d56a47b53 Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Sat, 11 Jun 2016 21:15:37 +0200 Subject: ipv6: fix checksum annotation in udp6_csum_init Cc: Tom Herbert Fixes: 4068579e1e098fa ("net: Implmement RFC 6936 (zero RX csums for UDP/IPv6") Signed-off-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- net/ipv6/ip6_checksum.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/net/ipv6/ip6_checksum.c b/net/ipv6/ip6_checksum.c index b2025bf3da4a..c0cbcb259f5a 100644 --- a/net/ipv6/ip6_checksum.c +++ b/net/ipv6/ip6_checksum.c @@ -78,9 +78,12 @@ int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh, int proto) * we accept a checksum of zero here. When we find the socket * for the UDP packet we'll check if that socket allows zero checksum * for IPv6 (set by socket option). + * + * Note, we are only interested in != 0 or == 0, thus the + * force to int. */ - return skb_checksum_init_zero_check(skb, proto, uh->check, - ip6_compute_pseudo); + return (__force int)skb_checksum_init_zero_check(skb, proto, uh->check, + ip6_compute_pseudo); } EXPORT_SYMBOL(udp6_csum_init); -- cgit v1.2.3 From b46d9f625b07f843c706c2c7d0210a90ccdf143b Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Sun, 12 Jun 2016 12:02:46 +0200 Subject: ipv4: fix checksum annotation in udp4_csum_init Reported-by: Cong Wang Cc: Cong Wang Cc: Tom Herbert Fixes: 4068579e1e098fa ("net: Implmement RFC 6936 (zero RX csums for UDP/IPv6") Signed-off-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- net/ipv4/udp.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 0ff31d97d485..ba0d8b8b7690 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1755,8 +1755,11 @@ static inline int udp4_csum_init(struct sk_buff *skb, struct udphdr *uh, return err; } - return skb_checksum_init_zero_check(skb, proto, uh->check, - inet_compute_pseudo); + /* Note, we are only interested in != 0 or == 0, thus the + * force to int. + */ + return (__force int)skb_checksum_init_zero_check(skb, proto, uh->check, + inet_compute_pseudo); } /* -- cgit v1.2.3 From 881d0327db37ad917a367c77aff1afa1ee41e0a9 Mon Sep 17 00:00:00 2001 From: Feng Tang Date: Sun, 12 Jun 2016 17:36:37 +0800 Subject: net: alx: Work around the DMA RX overflow issue Commit 26c5f03 uses a new skb allocator to avoid the RFD overflow issue. But from debugging without datasheet, we found the error always happen when the DMA RX address is set to 0x....fc0, which is very likely to be a HW/silicon problem. So one idea is instead of adding a new allocator, why not just hitting the right target by avaiding the error-prone DMA address? This patch will actually * Remove the commit 26c5f03 * Apply rx skb with 64 bytes longer space, and if the allocated skb has a 0x...fc0 address, it will use skb_resever(skb, 64) to advance the address, so that the RX overflow can be avoided. In theory this method should also apply to atl1c driver, which I can't find anyone who can help to test on real devices. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=70761 Signed-off-by: Feng Tang Suggested-by: Eric Dumazet Tested-by: Ole Lukoie Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- drivers/net/ethernet/atheros/alx/alx.h | 4 --- drivers/net/ethernet/atheros/alx/main.c | 61 ++++++++------------------------- 2 files changed, 14 insertions(+), 51 deletions(-) diff --git a/drivers/net/ethernet/atheros/alx/alx.h b/drivers/net/ethernet/atheros/alx/alx.h index d02c4240b7df..8fc93c5f6abc 100644 --- a/drivers/net/ethernet/atheros/alx/alx.h +++ b/drivers/net/ethernet/atheros/alx/alx.h @@ -96,10 +96,6 @@ struct alx_priv { unsigned int rx_ringsz; unsigned int rxbuf_size; - struct page *rx_page; - unsigned int rx_page_offset; - unsigned int rx_frag_size; - struct napi_struct napi; struct alx_tx_queue txq; struct alx_rx_queue rxq; diff --git a/drivers/net/ethernet/atheros/alx/main.c b/drivers/net/ethernet/atheros/alx/main.c index c98acdc0d14f..e708e360a9e3 100644 --- a/drivers/net/ethernet/atheros/alx/main.c +++ b/drivers/net/ethernet/atheros/alx/main.c @@ -70,35 +70,6 @@ static void alx_free_txbuf(struct alx_priv *alx, int entry) } } -static struct sk_buff *alx_alloc_skb(struct alx_priv *alx, gfp_t gfp) -{ - struct sk_buff *skb; - struct page *page; - - if (alx->rx_frag_size > PAGE_SIZE) - return __netdev_alloc_skb(alx->dev, alx->rxbuf_size, gfp); - - page = alx->rx_page; - if (!page) { - alx->rx_page = page = alloc_page(gfp); - if (unlikely(!page)) - return NULL; - alx->rx_page_offset = 0; - } - - skb = build_skb(page_address(page) + alx->rx_page_offset, - alx->rx_frag_size); - if (likely(skb)) { - alx->rx_page_offset += alx->rx_frag_size; - if (alx->rx_page_offset >= PAGE_SIZE) - alx->rx_page = NULL; - else - get_page(page); - } - return skb; -} - - static int alx_refill_rx_ring(struct alx_priv *alx, gfp_t gfp) { struct alx_rx_queue *rxq = &alx->rxq; @@ -115,9 +86,22 @@ static int alx_refill_rx_ring(struct alx_priv *alx, gfp_t gfp) while (!cur_buf->skb && next != rxq->read_idx) { struct alx_rfd *rfd = &rxq->rfd[cur]; - skb = alx_alloc_skb(alx, gfp); + /* + * When DMA RX address is set to something like + * 0x....fc0, it will be very likely to cause DMA + * RFD overflow issue. + * + * To work around it, we apply rx skb with 64 bytes + * longer space, and offset the address whenever + * 0x....fc0 is detected. + */ + skb = __netdev_alloc_skb(alx->dev, alx->rxbuf_size + 64, gfp); if (!skb) break; + + if (((unsigned long)skb->data & 0xfff) == 0xfc0) + skb_reserve(skb, 64); + dma = dma_map_single(&alx->hw.pdev->dev, skb->data, alx->rxbuf_size, DMA_FROM_DEVICE); @@ -153,7 +137,6 @@ static int alx_refill_rx_ring(struct alx_priv *alx, gfp_t gfp) alx_write_mem16(&alx->hw, ALX_RFD_PIDX, cur); } - return count; } @@ -622,11 +605,6 @@ static void alx_free_rings(struct alx_priv *alx) kfree(alx->txq.bufs); kfree(alx->rxq.bufs); - if (alx->rx_page) { - put_page(alx->rx_page); - alx->rx_page = NULL; - } - dma_free_coherent(&alx->hw.pdev->dev, alx->descmem.size, alx->descmem.virt, @@ -681,7 +659,6 @@ static int alx_request_irq(struct alx_priv *alx) alx->dev->name, alx); if (!err) goto out; - /* fall back to legacy interrupt */ pci_disable_msi(alx->hw.pdev); } @@ -725,7 +702,6 @@ static int alx_init_sw(struct alx_priv *alx) struct pci_dev *pdev = alx->hw.pdev; struct alx_hw *hw = &alx->hw; int err; - unsigned int head_size; err = alx_identify_hw(alx); if (err) { @@ -741,12 +717,7 @@ static int alx_init_sw(struct alx_priv *alx) hw->smb_timer = 400; hw->mtu = alx->dev->mtu; - alx->rxbuf_size = ALX_MAX_FRAME_LEN(hw->mtu); - head_size = SKB_DATA_ALIGN(alx->rxbuf_size + NET_SKB_PAD) + - SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); - alx->rx_frag_size = roundup_pow_of_two(head_size); - alx->tx_ringsz = 256; alx->rx_ringsz = 512; hw->imt = 200; @@ -848,7 +819,6 @@ static int alx_change_mtu(struct net_device *netdev, int mtu) { struct alx_priv *alx = netdev_priv(netdev); int max_frame = ALX_MAX_FRAME_LEN(mtu); - unsigned int head_size; if ((max_frame < ALX_MIN_FRAME_SIZE) || (max_frame > ALX_MAX_FRAME_SIZE)) @@ -860,9 +830,6 @@ static int alx_change_mtu(struct net_device *netdev, int mtu) netdev->mtu = mtu; alx->hw.mtu = mtu; alx->rxbuf_size = max(max_frame, ALX_DEF_RXBUF_SIZE); - head_size = SKB_DATA_ALIGN(alx->rxbuf_size + NET_SKB_PAD) + - SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); - alx->rx_frag_size = roundup_pow_of_two(head_size); netdev_update_features(netdev); if (netif_running(netdev)) alx_reinit(alx); -- cgit v1.2.3 From 6c0d54f1897d229748d4f41ef919078db6db2123 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 12 Jun 2016 20:01:25 -0700 Subject: net_sched: fix pfifo_head_drop behavior vs backlog When the qdisc is full, we drop a packet at the head of the queue, queue the current skb and return NET_XMIT_CN Now we track backlog on upper qdiscs, we need to call qdisc_tree_reduce_backlog(), even if the qlen did not change. Fixes: 2ccccf5fb43f ("net_sched: update hierarchical backlog too") Signed-off-by: Eric Dumazet Cc: WANG Cong Cc: Jamal Hadi Salim Acked-by: Cong Wang Signed-off-by: David S. Miller --- net/sched/sch_fifo.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/sched/sch_fifo.c b/net/sched/sch_fifo.c index 2177eac0a61e..2e4bd2c0a50c 100644 --- a/net/sched/sch_fifo.c +++ b/net/sched/sch_fifo.c @@ -37,14 +37,18 @@ static int pfifo_enqueue(struct sk_buff *skb, struct Qdisc *sch) static int pfifo_tail_enqueue(struct sk_buff *skb, struct Qdisc *sch) { + unsigned int prev_backlog; + if (likely(skb_queue_len(&sch->q) < sch->limit)) return qdisc_enqueue_tail(skb, sch); + prev_backlog = sch->qstats.backlog; /* queue full, remove one skb to fulfill the limit */ __qdisc_queue_drop_head(sch, &sch->q); qdisc_qstats_drop(sch); qdisc_enqueue_tail(skb, sch); + qdisc_tree_reduce_backlog(sch, 0, prev_backlog - sch->qstats.backlog); return NET_XMIT_CN; } -- cgit v1.2.3 From d1e37288c9146dccff830e3253e403af8705b51f Mon Sep 17 00:00:00 2001 From: "Su, Xuemin" Date: Mon, 13 Jun 2016 11:02:50 +0800 Subject: udp reuseport: fix packet of same flow hashed to different socket There is a corner case in which udp packets belonging to a same flow are hashed to different socket when hslot->count changes from 10 to 11: 1) When hslot->count <= 10, __udp_lib_lookup() searches udp_table->hash, and always passes 'daddr' to udp_ehashfn(). 2) When hslot->count > 10, __udp_lib_lookup() searches udp_table->hash2, but may pass 'INADDR_ANY' to udp_ehashfn() if the sockets are bound to INADDR_ANY instead of some specific addr. That means when hslot->count changes from 10 to 11, the hash calculated by udp_ehashfn() is also changed, and the udp packets belonging to a same flow will be hashed to different socket. This is easily reproduced: 1) Create 10 udp sockets and bind all of them to 0.0.0.0:40000. 2) From the same host send udp packets to 127.0.0.1:40000, record the socket index which receives the packets. 3) Create 1 more udp socket and bind it to 0.0.0.0:44096. The number 44096 is 40000 + UDP_HASH_SIZE(4096), this makes the new socket put into the same hslot as the aformentioned 10 sockets, and makes the hslot->count change from 10 to 11. 4) From the same host send udp packets to 127.0.0.1:40000, and the socket index which receives the packets will be different from the one received in step 2. This should not happen as the socket bound to 0.0.0.0:44096 should not change the behavior of the sockets bound to 0.0.0.0:40000. It's the same case for IPv6, and this patch also fixes that. Signed-off-by: Su, Xuemin Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/udp.c | 73 +++++++++++++--------------------------------------------- net/ipv6/udp.c | 71 +++++++++++++------------------------------------------- 2 files changed, 32 insertions(+), 112 deletions(-) diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index ba0d8b8b7690..ca5e8ea29538 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -391,9 +391,9 @@ int udp_v4_get_port(struct sock *sk, unsigned short snum) return udp_lib_get_port(sk, snum, ipv4_rcv_saddr_equal, hash2_nulladdr); } -static inline int compute_score(struct sock *sk, struct net *net, - __be32 saddr, unsigned short hnum, __be16 sport, - __be32 daddr, __be16 dport, int dif) +static int compute_score(struct sock *sk, struct net *net, + __be32 saddr, __be16 sport, + __be32 daddr, unsigned short hnum, int dif) { int score; struct inet_sock *inet; @@ -434,52 +434,6 @@ static inline int compute_score(struct sock *sk, struct net *net, return score; } -/* - * In this second variant, we check (daddr, dport) matches (inet_rcv_sadd, inet_num) - */ -static inline int compute_score2(struct sock *sk, struct net *net, - __be32 saddr, __be16 sport, - __be32 daddr, unsigned int hnum, int dif) -{ - int score; - struct inet_sock *inet; - - if (!net_eq(sock_net(sk), net) || - ipv6_only_sock(sk)) - return -1; - - inet = inet_sk(sk); - - if (inet->inet_rcv_saddr != daddr || - inet->inet_num != hnum) - return -1; - - score = (sk->sk_family == PF_INET) ? 2 : 1; - - if (inet->inet_daddr) { - if (inet->inet_daddr != saddr) - return -1; - score += 4; - } - - if (inet->inet_dport) { - if (inet->inet_dport != sport) - return -1; - score += 4; - } - - if (sk->sk_bound_dev_if) { - if (sk->sk_bound_dev_if != dif) - return -1; - score += 4; - } - - if (sk->sk_incoming_cpu == raw_smp_processor_id()) - score++; - - return score; -} - static u32 udp_ehashfn(const struct net *net, const __be32 laddr, const __u16 lport, const __be32 faddr, const __be16 fport) @@ -492,11 +446,11 @@ static u32 udp_ehashfn(const struct net *net, const __be32 laddr, udp_ehash_secret + net_hash_mix(net)); } -/* called with read_rcu_lock() */ +/* called with rcu_read_lock() */ static struct sock *udp4_lib_lookup2(struct net *net, __be32 saddr, __be16 sport, __be32 daddr, unsigned int hnum, int dif, - struct udp_hslot *hslot2, unsigned int slot2, + struct udp_hslot *hslot2, struct sk_buff *skb) { struct sock *sk, *result; @@ -506,7 +460,7 @@ static struct sock *udp4_lib_lookup2(struct net *net, result = NULL; badness = 0; udp_portaddr_for_each_entry_rcu(sk, &hslot2->head) { - score = compute_score2(sk, net, saddr, sport, + score = compute_score(sk, net, saddr, sport, daddr, hnum, dif); if (score > badness) { reuseport = sk->sk_reuseport; @@ -554,17 +508,22 @@ struct sock *__udp4_lib_lookup(struct net *net, __be32 saddr, result = udp4_lib_lookup2(net, saddr, sport, daddr, hnum, dif, - hslot2, slot2, skb); + hslot2, skb); if (!result) { + unsigned int old_slot2 = slot2; hash2 = udp4_portaddr_hash(net, htonl(INADDR_ANY), hnum); slot2 = hash2 & udptable->mask; + /* avoid searching the same slot again. */ + if (unlikely(slot2 == old_slot2)) + return result; + hslot2 = &udptable->hash2[slot2]; if (hslot->count < hslot2->count) goto begin; result = udp4_lib_lookup2(net, saddr, sport, - htonl(INADDR_ANY), hnum, dif, - hslot2, slot2, skb); + daddr, hnum, dif, + hslot2, skb); } return result; } @@ -572,8 +531,8 @@ begin: result = NULL; badness = 0; sk_for_each_rcu(sk, &hslot->head) { - score = compute_score(sk, net, saddr, hnum, sport, - daddr, dport, dif); + score = compute_score(sk, net, saddr, sport, + daddr, hnum, dif); if (score > badness) { reuseport = sk->sk_reuseport; if (reuseport) { diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index f421c9f23c5b..005dc82c2138 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -115,11 +115,10 @@ static void udp_v6_rehash(struct sock *sk) udp_lib_rehash(sk, new_hash); } -static inline int compute_score(struct sock *sk, struct net *net, - unsigned short hnum, - const struct in6_addr *saddr, __be16 sport, - const struct in6_addr *daddr, __be16 dport, - int dif) +static int compute_score(struct sock *sk, struct net *net, + const struct in6_addr *saddr, __be16 sport, + const struct in6_addr *daddr, unsigned short hnum, + int dif) { int score; struct inet_sock *inet; @@ -162,54 +161,11 @@ static inline int compute_score(struct sock *sk, struct net *net, return score; } -static inline int compute_score2(struct sock *sk, struct net *net, - const struct in6_addr *saddr, __be16 sport, - const struct in6_addr *daddr, - unsigned short hnum, int dif) -{ - int score; - struct inet_sock *inet; - - if (!net_eq(sock_net(sk), net) || - udp_sk(sk)->udp_port_hash != hnum || - sk->sk_family != PF_INET6) - return -1; - - if (!ipv6_addr_equal(&sk->sk_v6_rcv_saddr, daddr)) - return -1; - - score = 0; - inet = inet_sk(sk); - - if (inet->inet_dport) { - if (inet->inet_dport != sport) - return -1; - score++; - } - - if (!ipv6_addr_any(&sk->sk_v6_daddr)) { - if (!ipv6_addr_equal(&sk->sk_v6_daddr, saddr)) - return -1; - score++; - } - - if (sk->sk_bound_dev_if) { - if (sk->sk_bound_dev_if != dif) - return -1; - score++; - } - - if (sk->sk_incoming_cpu == raw_smp_processor_id()) - score++; - - return score; -} - -/* called with read_rcu_lock() */ +/* called with rcu_read_lock() */ static struct sock *udp6_lib_lookup2(struct net *net, const struct in6_addr *saddr, __be16 sport, const struct in6_addr *daddr, unsigned int hnum, int dif, - struct udp_hslot *hslot2, unsigned int slot2, + struct udp_hslot *hslot2, struct sk_buff *skb) { struct sock *sk, *result; @@ -219,7 +175,7 @@ static struct sock *udp6_lib_lookup2(struct net *net, result = NULL; badness = -1; udp_portaddr_for_each_entry_rcu(sk, &hslot2->head) { - score = compute_score2(sk, net, saddr, sport, + score = compute_score(sk, net, saddr, sport, daddr, hnum, dif); if (score > badness) { reuseport = sk->sk_reuseport; @@ -268,17 +224,22 @@ struct sock *__udp6_lib_lookup(struct net *net, result = udp6_lib_lookup2(net, saddr, sport, daddr, hnum, dif, - hslot2, slot2, skb); + hslot2, skb); if (!result) { + unsigned int old_slot2 = slot2; hash2 = udp6_portaddr_hash(net, &in6addr_any, hnum); slot2 = hash2 & udptable->mask; + /* avoid searching the same slot again. */ + if (unlikely(slot2 == old_slot2)) + return result; + hslot2 = &udptable->hash2[slot2]; if (hslot->count < hslot2->count) goto begin; result = udp6_lib_lookup2(net, saddr, sport, - &in6addr_any, hnum, dif, - hslot2, slot2, skb); + daddr, hnum, dif, + hslot2, skb); } return result; } @@ -286,7 +247,7 @@ begin: result = NULL; badness = -1; sk_for_each_rcu(sk, &hslot->head) { - score = compute_score(sk, net, hnum, saddr, sport, daddr, dport, dif); + score = compute_score(sk, net, saddr, sport, daddr, hnum, dif); if (score > badness) { reuseport = sk->sk_reuseport; if (reuseport) { -- cgit v1.2.3 From 106da663ff495e0aea3ac15b8317aa410754fcac Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Mon, 13 Jun 2016 10:31:04 +0200 Subject: ovs/gre,geneve: fix error path when creating an iface After ipgre_newlink()/geneve_configure() call, the netdev is registered. Fixes: 7e059158d57b ("vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices") CC: David Wragg Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller --- drivers/net/geneve.c | 10 +++++++--- net/ipv4/ip_gre.c | 10 +++++++--- 2 files changed, 14 insertions(+), 6 deletions(-) diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index cadefe4fdaa2..086c2dae4c3d 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -1508,6 +1508,7 @@ struct net_device *geneve_dev_create_fb(struct net *net, const char *name, { struct nlattr *tb[IFLA_MAX + 1]; struct net_device *dev; + LIST_HEAD(list_kill); int err; memset(tb, 0, sizeof(tb)); @@ -1519,8 +1520,10 @@ struct net_device *geneve_dev_create_fb(struct net *net, const char *name, err = geneve_configure(net, dev, &geneve_remote_unspec, 0, 0, 0, 0, htons(dst_port), true, GENEVE_F_UDP_ZERO_CSUM6_RX); - if (err) - goto err; + if (err) { + free_netdev(dev); + return ERR_PTR(err); + } /* openvswitch users expect packet sizes to be unrestricted, * so set the largest MTU we can. @@ -1532,7 +1535,8 @@ struct net_device *geneve_dev_create_fb(struct net *net, const char *name, return dev; err: - free_netdev(dev); + geneve_dellink(dev, &list_kill); + unregister_netdevice_many(&list_kill); return ERR_PTR(err); } EXPORT_SYMBOL_GPL(geneve_dev_create_fb); diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 4d2025f7ec57..08deba679c8c 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -1121,6 +1121,7 @@ struct net_device *gretap_fb_dev_create(struct net *net, const char *name, { struct nlattr *tb[IFLA_MAX + 1]; struct net_device *dev; + LIST_HEAD(list_kill); struct ip_tunnel *t; int err; @@ -1136,8 +1137,10 @@ struct net_device *gretap_fb_dev_create(struct net *net, const char *name, t->collect_md = true; err = ipgre_newlink(net, dev, tb, NULL); - if (err < 0) - goto out; + if (err < 0) { + free_netdev(dev); + return ERR_PTR(err); + } /* openvswitch users expect packet sizes to be unrestricted, * so set the largest MTU we can. @@ -1148,7 +1151,8 @@ struct net_device *gretap_fb_dev_create(struct net *net, const char *name, return dev; out: - free_netdev(dev); + ip_tunnel_dellink(dev, &list_kill); + unregister_netdevice_many(&list_kill); return ERR_PTR(err); } EXPORT_SYMBOL_GPL(gretap_fb_dev_create); -- cgit v1.2.3 From cf5da330bbdd0c06b05c525a3d1d58ccd82c87a6 Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Mon, 13 Jun 2016 10:31:05 +0200 Subject: ovs/vxlan: fix rtnl notifications on iface deletion The function vxlan_dev_create() (only used by ovs) never calls rtnl_configure_link(). The consequence is that dev->rtnl_link_state is never set to RTNL_LINK_INITIALIZED. During the deletion phase, the function rollback_registered_many() sends a RTM_DELLINK only if dev->rtnl_link_state is set to RTNL_LINK_INITIALIZED. Note that the function vxlan_dev_create() is moved after the rtnl stuff so that vxlan_dellink() can be called in this function. Fixes: dcc38c033b32 ("openvswitch: Re-add CONFIG_OPENVSWITCH_VXLAN") CC: Thomas Graf CC: Pravin B Shelar Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller --- drivers/net/vxlan.c | 58 +++++++++++++++++++++++++++++++---------------------- 1 file changed, 34 insertions(+), 24 deletions(-) diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index f999db2f97b4..b3b9db68f758 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2952,30 +2952,6 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev, return 0; } -struct net_device *vxlan_dev_create(struct net *net, const char *name, - u8 name_assign_type, struct vxlan_config *conf) -{ - struct nlattr *tb[IFLA_MAX+1]; - struct net_device *dev; - int err; - - memset(&tb, 0, sizeof(tb)); - - dev = rtnl_create_link(net, name, name_assign_type, - &vxlan_link_ops, tb); - if (IS_ERR(dev)) - return dev; - - err = vxlan_dev_configure(net, dev, conf); - if (err < 0) { - free_netdev(dev); - return ERR_PTR(err); - } - - return dev; -} -EXPORT_SYMBOL_GPL(vxlan_dev_create); - static int vxlan_newlink(struct net *src_net, struct net_device *dev, struct nlattr *tb[], struct nlattr *data[]) { @@ -3268,6 +3244,40 @@ static struct rtnl_link_ops vxlan_link_ops __read_mostly = { .get_link_net = vxlan_get_link_net, }; +struct net_device *vxlan_dev_create(struct net *net, const char *name, + u8 name_assign_type, + struct vxlan_config *conf) +{ + struct nlattr *tb[IFLA_MAX + 1]; + struct net_device *dev; + int err; + + memset(&tb, 0, sizeof(tb)); + + dev = rtnl_create_link(net, name, name_assign_type, + &vxlan_link_ops, tb); + if (IS_ERR(dev)) + return dev; + + err = vxlan_dev_configure(net, dev, conf); + if (err < 0) { + free_netdev(dev); + return ERR_PTR(err); + } + + err = rtnl_configure_link(dev, NULL); + if (err < 0) { + LIST_HEAD(list_kill); + + vxlan_dellink(dev, &list_kill); + unregister_netdevice_many(&list_kill); + return ERR_PTR(err); + } + + return dev; +} +EXPORT_SYMBOL_GPL(vxlan_dev_create); + static void vxlan_handle_lowerdev_unregister(struct vxlan_net *vn, struct net_device *dev) { -- cgit v1.2.3 From da6f1da819d4b9c081a477dec74dc468a0b44290 Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Mon, 13 Jun 2016 10:31:06 +0200 Subject: ovs/gre: fix rtnl notifications on iface deletion The function gretap_fb_dev_create() (only used by ovs) never calls rtnl_configure_link(). The consequence is that dev->rtnl_link_state is never set to RTNL_LINK_INITIALIZED. During the deletion phase, the function rollback_registered_many() sends a RTM_DELLINK only if dev->rtnl_link_state is set to RTNL_LINK_INITIALIZED. Fixes: b2acd1dc3949 ("openvswitch: Use regular GRE net_device instead of vport") CC: Thomas Graf CC: Pravin B Shelar Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller --- net/ipv4/ip_gre.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 08deba679c8c..07c5cf1838d8 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -1149,6 +1149,10 @@ struct net_device *gretap_fb_dev_create(struct net *net, const char *name, if (err) goto out; + err = rtnl_configure_link(dev, NULL); + if (err < 0) + goto out; + return dev; out: ip_tunnel_dellink(dev, &list_kill); -- cgit v1.2.3 From 41009481b690493c169ce85f591b9d32c6fd9422 Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Mon, 13 Jun 2016 10:31:07 +0200 Subject: ovs/geneve: fix rtnl notifications on iface deletion The function geneve_dev_create_fb() (only used by ovs) never calls rtnl_configure_link(). The consequence is that dev->rtnl_link_state is never set to RTNL_LINK_INITIALIZED. During the deletion phase, the function rollback_registered_many() sends a RTM_DELLINK only if dev->rtnl_link_state is set to RTNL_LINK_INITIALIZED. Fixes: e305ac6cf5a1 ("geneve: Add support to collect tunnel metadata.") CC: Pravin B Shelar CC: Jesse Gross CC: Thomas Graf Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller --- drivers/net/geneve.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index 086c2dae4c3d..305a04e45a13 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -1532,6 +1532,10 @@ struct net_device *geneve_dev_create_fb(struct net *net, const char *name, if (err) goto err; + err = rtnl_configure_link(dev, NULL); + if (err < 0) + goto err; + return dev; err: -- cgit v1.2.3 From 775711497202fe376368c25b0c7296ed8803e0ba Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Fri, 10 Jun 2016 17:25:19 +0200 Subject: netfilter: conntrack: destroy kmemcache on module removal I forgot to move the kmem_cache_destroy into the exit path. Fixes: 0c5366b3a8c7 ("netfilter: conntrack: use single slab cache) Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_conntrack_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index db2312eeb2a4..f204274a9b6b 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -1544,6 +1544,8 @@ void nf_conntrack_cleanup_end(void) nf_conntrack_tstamp_fini(); nf_conntrack_acct_fini(); nf_conntrack_expect_fini(); + + kmem_cache_destroy(nf_conntrack_cachep); } /* -- cgit v1.2.3 From a46844021f6182cca7b575295ba33a4734b1b9d9 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Sat, 11 Jun 2016 12:20:26 +0800 Subject: netfilter: nf_tables: fix wrong check of NFT_SET_MAP in nf_tables_bind_set We should check "i" is used as a dictionary or not, "binding" is already checked before. Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_tables_api.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 7b7aa871a174..492f6f8efdda 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -2946,7 +2946,7 @@ int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set, * jumps are already validated for that chain. */ list_for_each_entry(i, &set->bindings, list) { - if (binding->flags & NFT_SET_MAP && + if (i->flags & NFT_SET_MAP && i->chain == binding->chain) goto bind; } -- cgit v1.2.3 From 8588ac097b49ce8802f11541d9cd6f6667badb34 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Sat, 11 Jun 2016 12:20:27 +0800 Subject: netfilter: nf_tables: reject loops from set element jump to chain Liping Zhang says: "Users may add such a wrong nft rules successfully, which will cause an endless jump loop: # nft add rule filter test tcp dport vmap {1: jump test} This is because before we commit, the element in the current anonymous set is inactive, so osp->walk will skip this element and miss the validate check." To resolve this problem, this patch passes the generation mask to the walk function through the iter container structure depending on the code path: 1) If we're dumping the elements, then we have to check if the element is active in the current generation. Thus, we check for the current bit in the genmask. 2) If we're checking for loops, then we have to check if the element is active in the next generation, as we're in the middle of a transaction. Thus, we check for the next bit in the genmask. Based on original patch from Liping Zhang. Reported-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso Tested-by: Liping Zhang --- include/net/netfilter/nf_tables.h | 1 + net/netfilter/nf_tables_api.c | 15 +++++++++------ net/netfilter/nft_hash.c | 3 +-- net/netfilter/nft_rbtree.c | 3 +-- 4 files changed, 12 insertions(+), 10 deletions(-) diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h index 092235458691..f7c291ff4074 100644 --- a/include/net/netfilter/nf_tables.h +++ b/include/net/netfilter/nf_tables.h @@ -167,6 +167,7 @@ struct nft_set_elem { struct nft_set; struct nft_set_iter { + u8 genmask; unsigned int count; unsigned int skip; int err; diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 492f6f8efdda..0fd69988f00b 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -2951,6 +2951,7 @@ int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set, goto bind; } + iter.genmask = nft_genmask_next(ctx->net); iter.skip = 0; iter.count = 0; iter.err = 0; @@ -3192,12 +3193,13 @@ static int nf_tables_dump_set(struct sk_buff *skb, struct netlink_callback *cb) if (nest == NULL) goto nla_put_failure; - args.cb = cb; - args.skb = skb; - args.iter.skip = cb->args[0]; - args.iter.count = 0; - args.iter.err = 0; - args.iter.fn = nf_tables_dump_setelem; + args.cb = cb; + args.skb = skb; + args.iter.genmask = nft_genmask_cur(ctx.net); + args.iter.skip = cb->args[0]; + args.iter.count = 0; + args.iter.err = 0; + args.iter.fn = nf_tables_dump_setelem; set->ops->walk(&ctx, set, &args.iter); nla_nest_end(skb, nest); @@ -4284,6 +4286,7 @@ static int nf_tables_check_loops(const struct nft_ctx *ctx, binding->chain != chain) continue; + iter.genmask = nft_genmask_next(ctx->net); iter.skip = 0; iter.count = 0; iter.err = 0; diff --git a/net/netfilter/nft_hash.c b/net/netfilter/nft_hash.c index 6fa016564f90..f39c53a159eb 100644 --- a/net/netfilter/nft_hash.c +++ b/net/netfilter/nft_hash.c @@ -189,7 +189,6 @@ static void nft_hash_walk(const struct nft_ctx *ctx, const struct nft_set *set, struct nft_hash_elem *he; struct rhashtable_iter hti; struct nft_set_elem elem; - u8 genmask = nft_genmask_cur(read_pnet(&set->pnet)); int err; err = rhashtable_walk_init(&priv->ht, &hti, GFP_KERNEL); @@ -218,7 +217,7 @@ static void nft_hash_walk(const struct nft_ctx *ctx, const struct nft_set *set, goto cont; if (nft_set_elem_expired(&he->ext)) goto cont; - if (!nft_set_elem_active(&he->ext, genmask)) + if (!nft_set_elem_active(&he->ext, iter->genmask)) goto cont; elem.priv = he; diff --git a/net/netfilter/nft_rbtree.c b/net/netfilter/nft_rbtree.c index f762094af7c1..7201d57b5a93 100644 --- a/net/netfilter/nft_rbtree.c +++ b/net/netfilter/nft_rbtree.c @@ -211,7 +211,6 @@ static void nft_rbtree_walk(const struct nft_ctx *ctx, struct nft_rbtree_elem *rbe; struct nft_set_elem elem; struct rb_node *node; - u8 genmask = nft_genmask_cur(read_pnet(&set->pnet)); spin_lock_bh(&nft_rbtree_lock); for (node = rb_first(&priv->root); node != NULL; node = rb_next(node)) { @@ -219,7 +218,7 @@ static void nft_rbtree_walk(const struct nft_ctx *ctx, if (iter->count < iter->skip) goto cont; - if (!nft_set_elem_active(&rbe->ext, genmask)) + if (!nft_set_elem_active(&rbe->ext, iter->genmask)) goto cont; elem.priv = rbe; -- cgit v1.2.3 From a02f424863610a0a7abd80c468839e59cfa4d0d8 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Sat, 11 Jun 2016 12:20:28 +0800 Subject: netfilter: nf_tables: fix wrong destroy anonymous sets if binding fails When we add a nft rule like follows: # nft add rule filter test tcp dport vmap {1: jump test} -ELOOP error will be returned, and the anonymous set will be destroyed. But after that, nf_tables_abort will also try to remove the element and destroy the set, which was already destroyed and freed. If we add a nft wrong rule, nft_tables_abort will do the cleanup work rightly, so nf_tables_set_destroy call here is redundant and wrong, remove it. Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_tables_api.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 0fd69988f00b..2c881871db38 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -2958,13 +2958,8 @@ int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set, iter.fn = nf_tables_bind_check_setelem; set->ops->walk(ctx, set, &iter); - if (iter.err < 0) { - /* Destroy anonymous sets if binding fails */ - if (set->flags & NFT_SET_ANONYMOUS) - nf_tables_set_destroy(ctx, set); - + if (iter.err < 0) return iter.err; - } } bind: binding->chain = ctx->chain; -- cgit v1.2.3 From 8fff1722f705ce5023a0d6d77a31a9d013be2a34 Mon Sep 17 00:00:00 2001 From: Liping Zhang Date: Tue, 14 Jun 2016 20:13:04 +0800 Subject: netfilter: nf_tables: fix a wrong check to skip the inactive rules nft_genmask_cur has already done left-shift operator on the gencursor, so there's no need to do left-shift operator on it again. Fixes: ea4bd995b0f2 ("netfilter: nf_tables: add transaction helper functions") Cc: Patrick McHardy Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_tables_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/nf_tables_core.c b/net/netfilter/nf_tables_core.c index e9f8dffcc244..fb8b5892b5ff 100644 --- a/net/netfilter/nf_tables_core.c +++ b/net/netfilter/nf_tables_core.c @@ -143,7 +143,7 @@ next_rule: list_for_each_entry_continue_rcu(rule, &chain->rules, list) { /* This rule is not active, skip. */ - if (unlikely(rule->genmask & (1 << gencursor))) + if (unlikely(rule->genmask & gencursor)) continue; rulenum++; -- cgit v1.2.3 From f52a4c74efbb61195490535e9d65d964c4ebfee3 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 14 Jun 2016 00:26:49 +0000 Subject: ata: fix return value check in ahci_seattle_get_port_info() In case of error, the function devm_kzalloc() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Signed-off-by: Wei Yongjun Acked-by: Brijesh Singh Signed-off-by: Tejun Heo --- drivers/ata/ahci_seattle.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ata/ahci_seattle.c b/drivers/ata/ahci_seattle.c index 6e702ab57220..1d31c0c0fc20 100644 --- a/drivers/ata/ahci_seattle.c +++ b/drivers/ata/ahci_seattle.c @@ -137,7 +137,7 @@ static const struct ata_port_info *ahci_seattle_get_port_info( u32 val; plat_data = devm_kzalloc(dev, sizeof(*plat_data), GFP_KERNEL); - if (IS_ERR(plat_data)) + if (!plat_data) return &ahci_port_info; plat_data->sgpio_ctrl = devm_ioremap_resource(dev, -- cgit v1.2.3 From 0c5ddb51e8f7be7170600f95a4ea92e5a32afad8 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 13 Jun 2016 07:50:25 -0700 Subject: net/mlx4_en: initialize cmd.context_lock spinlock earlier MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Maciej Żenczykowski reported lockdep warning a spinlock was not registered before being held in mlx4_cmd_wake_completions() cmd.context_lock initialization is not at the right place. 1) mlx4_cmd_use_events() can be called multiple times. Calling spin_lock_init() on a live spinlock can lead to hangs. 2) mlx4_cmd_wake_completions() can be called while lock has not been initialized. Lockdep complains, and current logic is not race prone. It seems better to move the initialization earlier in mlx4_load_one() Signed-off-by: Eric Dumazet Reported-by: Maciej Żenczykowski Cc: Eugenia Emantayev Cc: Tariq Toukan Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/cmd.c | 1 - drivers/net/ethernet/mellanox/mlx4/main.c | 1 + 2 files changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c index e94ca1c3fc7c..f04a423ff79d 100644 --- a/drivers/net/ethernet/mellanox/mlx4/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c @@ -2597,7 +2597,6 @@ int mlx4_cmd_use_events(struct mlx4_dev *dev) priv->cmd.free_head = 0; sema_init(&priv->cmd.event_sem, priv->cmd.max_cmds); - spin_lock_init(&priv->cmd.context_lock); for (priv->cmd.token_mask = 1; priv->cmd.token_mask < priv->cmd.max_cmds; diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index 12c77a70abdb..372ebfa880f5 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -3222,6 +3222,7 @@ static int mlx4_load_one(struct pci_dev *pdev, int pci_dev_data, INIT_LIST_HEAD(&priv->pgdir_list); mutex_init(&priv->pgdir_mutex); + spin_lock_init(&priv->cmd.context_lock); INIT_LIST_HEAD(&priv->bf_list); mutex_init(&priv->bf_mutex); -- cgit v1.2.3 From 3d7c8257d999bdf8fa77ffd9be775c7b58cc7b69 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 13 Jun 2016 11:33:32 -0700 Subject: net_sched: prio: insure proper transactional behavior Now prio_init() can return -ENOMEM, it also has to make sure any allocated qdiscs are freed, since the caller (qdisc_create()) wont call ->destroy() handler for us. More generally, we want a transactional behavior for "tc qdisc change ...", so prio_tune() should not make modifications if any error is returned. It means that we must validate parameters and allocate missing qdisc(s) before taking root qdisc lock exactly once, to not leave the prio qdisc in an intermediate state. Fixes: cbdf45116478 ("net_sched: prio: properly report out of memory errors") Signed-off-by: Eric Dumazet Reported-by: Cong Wang Acked-by: Cong Wang Signed-off-by: David S. Miller --- net/sched/sch_prio.c | 57 +++++++++++++++++++++------------------------------- 1 file changed, 23 insertions(+), 34 deletions(-) diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c index 071718bccdab..a356450b747b 100644 --- a/net/sched/sch_prio.c +++ b/net/sched/sch_prio.c @@ -172,8 +172,9 @@ prio_destroy(struct Qdisc *sch) static int prio_tune(struct Qdisc *sch, struct nlattr *opt) { struct prio_sched_data *q = qdisc_priv(sch); + struct Qdisc *queues[TCQ_PRIO_BANDS]; + int oldbands = q->bands, i; struct tc_prio_qopt *qopt; - int i; if (nla_len(opt) < sizeof(*qopt)) return -EINVAL; @@ -187,54 +188,42 @@ static int prio_tune(struct Qdisc *sch, struct nlattr *opt) return -EINVAL; } + /* Before commit, make sure we can allocate all new qdiscs */ + for (i = oldbands; i < qopt->bands; i++) { + queues[i] = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops, + TC_H_MAKE(sch->handle, i + 1)); + if (!queues[i]) { + while (i > oldbands) + qdisc_destroy(queues[--i]); + return -ENOMEM; + } + } + sch_tree_lock(sch); q->bands = qopt->bands; memcpy(q->prio2band, qopt->priomap, TC_PRIO_MAX+1); - for (i = q->bands; i < TCQ_PRIO_BANDS; i++) { + for (i = q->bands; i < oldbands; i++) { struct Qdisc *child = q->queues[i]; - q->queues[i] = &noop_qdisc; - if (child != &noop_qdisc) { - qdisc_tree_reduce_backlog(child, child->q.qlen, child->qstats.backlog); - qdisc_destroy(child); - } - } - sch_tree_unlock(sch); - for (i = 0; i < q->bands; i++) { - struct Qdisc *child; + qdisc_tree_reduce_backlog(child, child->q.qlen, + child->qstats.backlog); + qdisc_destroy(child); + } - if (q->queues[i] != &noop_qdisc) - continue; + for (i = oldbands; i < q->bands; i++) + q->queues[i] = queues[i]; - child = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops, - TC_H_MAKE(sch->handle, i + 1)); - if (!child) - return -ENOMEM; - sch_tree_lock(sch); - q->queues[i] = child; - sch_tree_unlock(sch); - } + sch_tree_unlock(sch); return 0; } static int prio_init(struct Qdisc *sch, struct nlattr *opt) { - struct prio_sched_data *q = qdisc_priv(sch); - int i; - - for (i = 0; i < TCQ_PRIO_BANDS; i++) - q->queues[i] = &noop_qdisc; - - if (opt == NULL) { + if (!opt) return -EINVAL; - } else { - int err; - if ((err = prio_tune(sch, opt)) != 0) - return err; - } - return 0; + return prio_tune(sch, opt); } static int prio_dump(struct Qdisc *sch, struct sk_buff *skb) -- cgit v1.2.3 From d15eccea69b96a5116169688dcc9baf6d1ce2751 Mon Sep 17 00:00:00 2001 From: WANG Cong Date: Mon, 13 Jun 2016 13:44:14 -0700 Subject: act_ipt: fix a bind refcnt leak And avoid calling tcf_hash_check() twice. Fixes: a57f19d30b2d ("net sched: ipt action fix late binding") Cc: Jamal Hadi Salim Signed-off-by: Cong Wang Acked-by: Jamal Hadi Salim Signed-off-by: David S. Miller --- net/sched/act_ipt.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c index 9f002ada7074..d4bd19ee5822 100644 --- a/net/sched/act_ipt.c +++ b/net/sched/act_ipt.c @@ -121,10 +121,13 @@ static int __tcf_ipt_init(struct tc_action_net *tn, struct nlattr *nla, } td = (struct xt_entry_target *)nla_data(tb[TCA_IPT_TARG]); - if (nla_len(tb[TCA_IPT_TARG]) < td->u.target_size) + if (nla_len(tb[TCA_IPT_TARG]) < td->u.target_size) { + if (exists) + tcf_hash_release(a, bind); return -EINVAL; + } - if (!tcf_hash_check(tn, index, a, bind)) { + if (!exists) { ret = tcf_hash_create(tn, index, est, a, sizeof(*ipt), bind, false); if (ret) -- cgit v1.2.3 From ebecaa6662b0a9c3590bd644a4cec6f9d96818b7 Mon Sep 17 00:00:00 2001 From: Jamal Hadi Salim Date: Mon, 13 Jun 2016 18:08:42 -0400 Subject: net sched actions: bug fix dumping actions directly didnt produce NLMSG_DONE This refers to commands to direct action access as follows: sudo tc actions add action drop index 12 sudo tc actions add action pipe index 10 And then dumping them like so: sudo tc actions ls action gact iproute2 worked because it depended on absence of TCA_ACT_TAB TLV as end of message. This fix has been tested with iproute2 and is backward compatible. Signed-off-by: Jamal Hadi Salim Acked-by: Cong Wang Signed-off-by: David S. Miller --- net/sched/act_api.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/sched/act_api.c b/net/sched/act_api.c index 336774a535c3..c7a0b0d481c0 100644 --- a/net/sched/act_api.c +++ b/net/sched/act_api.c @@ -1118,7 +1118,7 @@ tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb) nla_nest_end(skb, nest); ret = skb->len; } else - nla_nest_cancel(skb, nest); + nlmsg_trim(skb, b); nlh->nlmsg_len = skb_tail_pointer(skb) - b; if (NETLINK_CB(cb->skb).portid && ret) -- cgit v1.2.3 From 0ee13627f963f9c5c9544ed19d82854836d5e676 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Tue, 14 Jun 2016 06:16:27 +0200 Subject: htb: call qdisc_root with rcu read lock held saw a debug splat: net/include/net/sch_generic.h:287 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 0 2 locks held by kworker/2:1/710: #0: ("events"){.+.+.+}, at: [] #1: ((&q->work)){+.+...}, at: [] process_one_work+0x14d/0x690 Workqueue: events htb_work_func Call Trace: [] dump_stack+0x85/0xc2 [] lockdep_rcu_suspicious+0xe7/0x120 [] htb_work_func+0x67/0x70 Signed-off-by: Florian Westphal Acked-by: Cong Wang Signed-off-by: David S. Miller --- net/sched/sch_htb.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c index d4b4218af6b1..62f9d8100c6e 100644 --- a/net/sched/sch_htb.c +++ b/net/sched/sch_htb.c @@ -1007,7 +1007,9 @@ static void htb_work_func(struct work_struct *work) struct htb_sched *q = container_of(work, struct htb_sched, work); struct Qdisc *sch = q->watchdog.qdisc; + rcu_read_lock(); __netif_schedule(qdisc_root(sch)); + rcu_read_unlock(); } static int htb_init(struct Qdisc *sch, struct nlattr *opt) -- cgit v1.2.3 From b196c22af5c3ff784c472c80f6fb4e5fad67b2ac Mon Sep 17 00:00:00 2001 From: Sabrina Dubroca Date: Tue, 14 Jun 2016 15:25:14 +0200 Subject: macsec: add rcu_barrier() on module exit Without this, the various uses of call_rcu could cause a kernel panic. Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver") Signed-off-by: Sabrina Dubroca Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- drivers/net/macsec.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index 47ee2c840b55..e80736f6acd7 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -3361,6 +3361,7 @@ static void __exit macsec_exit(void) genl_unregister_family(&macsec_fam); rtnl_link_unregister(&macsec_link_ops); unregister_netdevice_notifier(&macsec_notifier); + rcu_barrier(); } module_init(macsec_init); -- cgit v1.2.3 From 5d9649b3a524df9ccd15ac25ad6591089260fdbd Mon Sep 17 00:00:00 2001 From: Sabrina Dubroca Date: Tue, 14 Jun 2016 15:25:15 +0200 Subject: macsec: allocate sg and iv on the heap For the crypto callbacks to work properly, we cannot have sg and iv on the stack. Use kmalloc instead, with a single allocation for aead_request + scatterlist + iv. Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver") Signed-off-by: Sabrina Dubroca Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- drivers/net/macsec.c | 46 +++++++++++++++++++++++++++++++++++++--------- 1 file changed, 37 insertions(+), 9 deletions(-) diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index e80736f6acd7..189ea3e8e8a0 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -605,12 +605,41 @@ static void macsec_encrypt_done(struct crypto_async_request *base, int err) dev_put(dev); } +static struct aead_request *macsec_alloc_req(struct crypto_aead *tfm, + unsigned char **iv, + struct scatterlist **sg) +{ + size_t size, iv_offset, sg_offset; + struct aead_request *req; + void *tmp; + + size = sizeof(struct aead_request) + crypto_aead_reqsize(tfm); + iv_offset = size; + size += GCM_AES_IV_LEN; + + size = ALIGN(size, __alignof__(struct scatterlist)); + sg_offset = size; + size += sizeof(struct scatterlist) * (MAX_SKB_FRAGS + 1); + + tmp = kmalloc(size, GFP_ATOMIC); + if (!tmp) + return NULL; + + *iv = (unsigned char *)(tmp + iv_offset); + *sg = (struct scatterlist *)(tmp + sg_offset); + req = tmp; + + aead_request_set_tfm(req, tfm); + + return req; +} + static struct sk_buff *macsec_encrypt(struct sk_buff *skb, struct net_device *dev) { int ret; - struct scatterlist sg[MAX_SKB_FRAGS + 1]; - unsigned char iv[GCM_AES_IV_LEN]; + struct scatterlist *sg; + unsigned char *iv; struct ethhdr *eth; struct macsec_eth_header *hh; size_t unprotected_len; @@ -668,8 +697,6 @@ static struct sk_buff *macsec_encrypt(struct sk_buff *skb, macsec_fill_sectag(hh, secy, pn); macsec_set_shortlen(hh, unprotected_len - 2 * ETH_ALEN); - macsec_fill_iv(iv, secy->sci, pn); - skb_put(skb, secy->icv_len); if (skb->len - ETH_HLEN > macsec_priv(dev)->real_dev->mtu) { @@ -684,13 +711,15 @@ static struct sk_buff *macsec_encrypt(struct sk_buff *skb, return ERR_PTR(-EINVAL); } - req = aead_request_alloc(tx_sa->key.tfm, GFP_ATOMIC); + req = macsec_alloc_req(tx_sa->key.tfm, &iv, &sg); if (!req) { macsec_txsa_put(tx_sa); kfree_skb(skb); return ERR_PTR(-ENOMEM); } + macsec_fill_iv(iv, secy->sci, pn); + sg_init_table(sg, MAX_SKB_FRAGS + 1); skb_to_sgvec(skb, sg, 0, skb->len); @@ -861,7 +890,6 @@ static void macsec_decrypt_done(struct crypto_async_request *base, int err) out: macsec_rxsa_put(rx_sa); dev_put(dev); - return; } static struct sk_buff *macsec_decrypt(struct sk_buff *skb, @@ -871,8 +899,8 @@ static struct sk_buff *macsec_decrypt(struct sk_buff *skb, struct macsec_secy *secy) { int ret; - struct scatterlist sg[MAX_SKB_FRAGS + 1]; - unsigned char iv[GCM_AES_IV_LEN]; + struct scatterlist *sg; + unsigned char *iv; struct aead_request *req; struct macsec_eth_header *hdr; u16 icv_len = secy->icv_len; @@ -882,7 +910,7 @@ static struct sk_buff *macsec_decrypt(struct sk_buff *skb, if (!skb) return ERR_PTR(-ENOMEM); - req = aead_request_alloc(rx_sa->key.tfm, GFP_ATOMIC); + req = macsec_alloc_req(rx_sa->key.tfm, &iv, &sg); if (!req) { kfree_skb(skb); return ERR_PTR(-ENOMEM); -- cgit v1.2.3 From 6052f7fbce857e327218a9d8a040e210ea7cc718 Mon Sep 17 00:00:00 2001 From: Sabrina Dubroca Date: Tue, 14 Jun 2016 15:25:16 +0200 Subject: macsec: fix SA initialization The ASYNC flag prevents initialization on some physical machines. Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver") Signed-off-by: Sabrina Dubroca Signed-off-by: David S. Miller --- drivers/net/macsec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index 189ea3e8e8a0..0e7eff7f1cd2 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -1262,7 +1262,7 @@ static struct crypto_aead *macsec_alloc_tfm(char *key, int key_len, int icv_len) struct crypto_aead *tfm; int ret; - tfm = crypto_alloc_aead("gcm(aes)", 0, CRYPTO_ALG_ASYNC); + tfm = crypto_alloc_aead("gcm(aes)", 0, 0); if (!tfm || IS_ERR(tfm)) return NULL; -- cgit v1.2.3 From 66d95b6705a6347f7b2645e042874ec0bb03b726 Mon Sep 17 00:00:00 2001 From: Ying Xue Date: Wed, 15 Jun 2016 14:10:57 +0800 Subject: tipc: fix suspicious RCU usage When run tipcTS&tipcTC test suite, the following complaint appears: [ 56.926168] =============================== [ 56.926169] [ INFO: suspicious RCU usage. ] [ 56.926171] 4.7.0-rc1+ #160 Not tainted [ 56.926173] ------------------------------- [ 56.926174] net/tipc/bearer.c:408 suspicious rcu_dereference_protected() usage! [ 56.926175] [ 56.926175] other info that might help us debug this: [ 56.926175] [ 56.926177] [ 56.926177] rcu_scheduler_active = 1, debug_locks = 1 [ 56.926179] 3 locks held by swapper/4/0: [ 56.926180] #0: (((&req->timer))){+.-...}, at: [] call_timer_fn+0x5/0x340 [ 56.926203] #1: (&(&req->lock)->rlock){+.-...}, at: [] disc_timeout+0x1b/0xd0 [tipc] [ 56.926212] #2: (rcu_read_lock){......}, at: [] tipc_bearer_xmit_skb+0xb0/0x2e0 [tipc] [ 56.926218] [ 56.926218] stack backtrace: [ 56.926221] CPU: 4 PID: 0 Comm: swapper/4 Not tainted 4.7.0-rc1+ #160 [ 56.926222] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007 [ 56.926224] 0000000000000000 ffff880016803d28 ffffffff813c4423 ffff8800154252c0 [ 56.926227] 0000000000000001 ffff880016803d58 ffffffff810b7512 ffff8800124d8120 [ 56.926230] ffff880013f8a160 ffff8800132b5ccc ffff8800124d8120 ffff880016803d88 [ 56.926234] Call Trace: [ 56.926235] [] dump_stack+0x67/0x94 [ 56.926250] [] lockdep_rcu_suspicious+0xe2/0x120 [ 56.926256] [] tipc_l2_send_msg+0x131/0x1c0 [tipc] [ 56.926261] [] tipc_bearer_xmit_skb+0x14c/0x2e0 [tipc] [ 56.926266] [] ? tipc_bearer_xmit_skb+0xb0/0x2e0 [tipc] [ 56.926273] [] ? tipc_disc_init_msg+0x1f0/0x1f0 [tipc] [ 56.926278] [] ? tipc_disc_init_msg+0x1f0/0x1f0 [tipc] [ 56.926283] [] disc_timeout+0x56/0xd0 [tipc] [ 56.926288] [] call_timer_fn+0xb8/0x340 [ 56.926291] [] ? call_timer_fn+0x5/0x340 [ 56.926296] [] ? tipc_disc_init_msg+0x1f0/0x1f0 [tipc] [ 56.926300] [] run_timer_softirq+0x23a/0x390 [ 56.926306] [] ? clockevents_program_event+0x7f/0x130 [ 56.926316] [] __do_softirq+0xc3/0x4a2 [ 56.926323] [] irq_exit+0x8a/0xb0 [ 56.926327] [] smp_apic_timer_interrupt+0x46/0x60 [ 56.926331] [] apic_timer_interrupt+0x89/0x90 [ 56.926333] [] ? default_idle+0x2a/0x1a0 [ 56.926340] [] ? default_idle+0x28/0x1a0 [ 56.926342] [] arch_cpu_idle+0xf/0x20 [ 56.926345] [] default_idle_call+0x2f/0x50 [ 56.926347] [] cpu_startup_entry+0x215/0x3e0 [ 56.926353] [] start_secondary+0xf9/0x100 The warning appears as rtnl_dereference() is wrongly used in tipc_l2_send_msg() under RCU read lock protection. Instead the proper usage should be that rcu_dereference_rtnl() is called here. Fixes: 5b7066c3dd24 ("tipc: stricter filtering of packets in bearer layer") Acked-by: Jon Maloy Signed-off-by: Ying Xue Signed-off-by: David S. Miller --- net/tipc/bearer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c index 6f11c62bc8f9..bf8f05c3eb82 100644 --- a/net/tipc/bearer.c +++ b/net/tipc/bearer.c @@ -405,7 +405,7 @@ int tipc_l2_send_msg(struct net *net, struct sk_buff *skb, return 0; /* Send RESET message even if bearer is detached from device */ - tipc_ptr = rtnl_dereference(dev->tipc_ptr); + tipc_ptr = rcu_dereference_rtnl(dev->tipc_ptr); if (unlikely(!tipc_ptr && !msg_is_reset(buf_msg(skb)))) goto drop; -- cgit v1.2.3 From c91522f860bb9dd4178c8280bbebd4f4321b7199 Mon Sep 17 00:00:00 2001 From: Ying Xue Date: Wed, 15 Jun 2016 14:11:31 +0800 Subject: tipc: eliminate uninitialized variable warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit net/tipc/link.c: In function ‘tipc_link_timeout’: net/tipc/link.c:744:28: warning: ‘mtyp’ may be used uninitialized in this function [-Wuninitialized] Fixes: 42b18f605fea ("tipc: refactor function tipc_link_timeout()") Acked-by: Jon Maloy Signed-off-by: Ying Xue Signed-off-by: David S. Miller --- net/tipc/link.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/tipc/link.c b/net/tipc/link.c index 7059c94f33c5..67b6ab9f4c8d 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -704,7 +704,8 @@ static void link_profile_stats(struct tipc_link *l) */ int tipc_link_timeout(struct tipc_link *l, struct sk_buff_head *xmitq) { - int mtyp, rc = 0; + int mtyp = 0; + int rc = 0; bool state = false; bool probe = false; bool setup = false; -- cgit v1.2.3 From 4a1836701fd59476ee1331379e00a9ab51ba4f61 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 15 Jun 2016 17:45:51 +0200 Subject: net: skfb: remove obsolete -I cflag The skfp driver has been moved to drivers/net/fddi/skfp a long time ago, but we still attempt to include headers from the old location, which causes a warning when building with W=1: cc1: error: /git/arm-soc/drivers/net/skfp: No such file or directory [-Werror=missing-include-dirs] cc1: error: drivers/net/skfp: No such file or directory [-Werror=missing-include-dirs] Clearly this include directive is not needed any more, so we can just remove it now. Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller --- drivers/net/fddi/skfp/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/fddi/skfp/Makefile b/drivers/net/fddi/skfp/Makefile index b0be0234abf6..a957a1c7e5ba 100644 --- a/drivers/net/fddi/skfp/Makefile +++ b/drivers/net/fddi/skfp/Makefile @@ -17,4 +17,4 @@ skfp-objs := skfddi.o hwmtm.o fplustm.o smt.o cfm.o \ # projects. To keep the source common for all those drivers (and # thus simplify fixes to it), please do not clean it up! -ccflags-y := -Idrivers/net/skfp -DPCI -DMEM_MAPPED_IO -Wno-strict-prototypes +ccflags-y := -DPCI -DMEM_MAPPED_IO -Wno-strict-prototypes -- cgit v1.2.3 From daddef76c3deaaa7922f9d7b18edbf0a061215c3 Mon Sep 17 00:00:00 2001 From: "Jason A. Donenfeld" Date: Wed, 15 Jun 2016 11:14:53 +0200 Subject: net: Don't forget pr_fmt on net_dbg_ratelimited for CONFIG_DYNAMIC_DEBUG The implementation of net_dbg_ratelimited in the CONFIG_DYNAMIC_DEBUG case was added with 2c94b5373 ("net: Implement net_dbg_ratelimited() for CONFIG_DYNAMIC_DEBUG case"). The implementation strategy was to take the usual definition of the dynamic_pr_debug macro, but alter it by adding a call to "net_ratelimit()" in the if statement. This is, in fact, the correct approach. However, while doing this, the author of the commit forgot to surround fmt by pr_fmt, resulting in unprefixed log messages appearing in the console. So, this commit adds back the pr_fmt(fmt) invocation, making net_dbg_ratelimited properly consistent across DEBUG, no DEBUG, and DYNAMIC_DEBUG cases, and bringing parity with the behavior of dynamic_pr_debug as well. Fixes: 2c94b5373 ("net: Implement net_dbg_ratelimited() for CONFIG_DYNAMIC_DEBUG case") Signed-off-by: Jason A. Donenfeld Cc: Tim Bingham Signed-off-by: David S. Miller --- include/linux/net.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/net.h b/include/linux/net.h index 9aa49a05fe38..25aa03b51c4e 100644 --- a/include/linux/net.h +++ b/include/linux/net.h @@ -251,7 +251,8 @@ do { \ DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT) && \ net_ratelimit()) \ - __dynamic_pr_debug(&descriptor, fmt, ##__VA_ARGS__); \ + __dynamic_pr_debug(&descriptor, pr_fmt(fmt), \ + ##__VA_ARGS__); \ } while (0) #elif defined(DEBUG) #define net_dbg_ratelimited(fmt, ...) \ -- cgit v1.2.3 From e582615ad33dbd39623084a02e95567b116e1eea Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 15 Jun 2016 06:24:00 -0700 Subject: gre: fix error handler MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 1) gre_parse_header() can be called from gre_err() At this point transport header points to ICMP header, not the inner header. 2) We can not really change transport header as ipgre_err() will later assume transport header still points to ICMP header (using icmp_hdr()) 3) pskb_may_pull() logic in gre_parse_header() really works if we are interested at zone pointed by skb->data 4) As Jiri explained in commit b7f8fe251e46 ("gre: do not pull header in ICMP error processing") we should not pull headers in error handler. So this fix : A) changes gre_parse_header() to use skb->data instead of skb_transport_header() B) Adds a nhs parameter to gre_parse_header() so that we can skip the not pulled IP header from error path. This offset is 0 for normal receive path. C) remove obsolete IPV6 includes Signed-off-by: Eric Dumazet Cc: Tom Herbert Cc: Maciej Żenczykowski Cc: Jiri Benc Signed-off-by: David S. Miller --- include/net/gre.h | 2 +- net/ipv4/gre_demux.c | 10 +++++----- net/ipv4/ip_gre.c | 12 ++++-------- net/ipv6/ip6_gre.c | 2 +- 4 files changed, 11 insertions(+), 15 deletions(-) diff --git a/include/net/gre.h b/include/net/gre.h index 5dce30a6abe3..7a54a31d1d4c 100644 --- a/include/net/gre.h +++ b/include/net/gre.h @@ -26,7 +26,7 @@ int gre_del_protocol(const struct gre_protocol *proto, u8 version); struct net_device *gretap_fb_dev_create(struct net *net, const char *name, u8 name_assign_type); int gre_parse_header(struct sk_buff *skb, struct tnl_ptk_info *tpi, - bool *csum_err, __be16 proto); + bool *csum_err, __be16 proto, int nhs); static inline int gre_calc_hlen(__be16 o_flags) { diff --git a/net/ipv4/gre_demux.c b/net/ipv4/gre_demux.c index 4c39f4fd332a..de1d119a4497 100644 --- a/net/ipv4/gre_demux.c +++ b/net/ipv4/gre_demux.c @@ -62,26 +62,26 @@ EXPORT_SYMBOL_GPL(gre_del_protocol); /* Fills in tpi and returns header length to be pulled. */ int gre_parse_header(struct sk_buff *skb, struct tnl_ptk_info *tpi, - bool *csum_err, __be16 proto) + bool *csum_err, __be16 proto, int nhs) { const struct gre_base_hdr *greh; __be32 *options; int hdr_len; - if (unlikely(!pskb_may_pull(skb, sizeof(struct gre_base_hdr)))) + if (unlikely(!pskb_may_pull(skb, nhs + sizeof(struct gre_base_hdr)))) return -EINVAL; - greh = (struct gre_base_hdr *)skb_transport_header(skb); + greh = (struct gre_base_hdr *)(skb->data + nhs); if (unlikely(greh->flags & (GRE_VERSION | GRE_ROUTING))) return -EINVAL; tpi->flags = gre_flags_to_tnl_flags(greh->flags); hdr_len = gre_calc_hlen(tpi->flags); - if (!pskb_may_pull(skb, hdr_len)) + if (!pskb_may_pull(skb, nhs + hdr_len)) return -EINVAL; - greh = (struct gre_base_hdr *)skb_transport_header(skb); + greh = (struct gre_base_hdr *)(skb->data + nhs); tpi->proto = greh->protocol; options = (__be32 *)(greh + 1); diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 07c5cf1838d8..1d000af7f561 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -49,12 +49,6 @@ #include #include -#if IS_ENABLED(CONFIG_IPV6) -#include -#include -#include -#endif - /* Problems & solutions -------------------- @@ -217,12 +211,14 @@ static void gre_err(struct sk_buff *skb, u32 info) * by themselves??? */ + const struct iphdr *iph = (struct iphdr *)skb->data; const int type = icmp_hdr(skb)->type; const int code = icmp_hdr(skb)->code; struct tnl_ptk_info tpi; bool csum_err = false; - if (gre_parse_header(skb, &tpi, &csum_err, htons(ETH_P_IP)) < 0) { + if (gre_parse_header(skb, &tpi, &csum_err, htons(ETH_P_IP), + iph->ihl * 4) < 0) { if (!csum_err) /* ignore csum errors. */ return; } @@ -338,7 +334,7 @@ static int gre_rcv(struct sk_buff *skb) } #endif - hdr_len = gre_parse_header(skb, &tpi, &csum_err, htons(ETH_P_IP)); + hdr_len = gre_parse_header(skb, &tpi, &csum_err, htons(ETH_P_IP), 0); if (hdr_len < 0) goto drop; diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index fdc9de276ab1..776d145113e1 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -468,7 +468,7 @@ static int gre_rcv(struct sk_buff *skb) bool csum_err = false; int hdr_len; - hdr_len = gre_parse_header(skb, &tpi, &csum_err, htons(ETH_P_IPV6)); + hdr_len = gre_parse_header(skb, &tpi, &csum_err, htons(ETH_P_IPV6), 0); if (hdr_len < 0) goto drop; -- cgit v1.2.3 From 19de99f70b87fcc3338da52a89c439b088cbff71 Mon Sep 17 00:00:00 2001 From: Alexei Starovoitov Date: Wed, 15 Jun 2016 18:25:38 -0700 Subject: bpf: fix matching of data/data_end in verifier The ctx structure passed into bpf programs is different depending on bpf program type. The verifier incorrectly marked ctx->data and ctx->data_end access based on ctx offset only. That caused loads in tracing programs int bpf_prog(struct pt_regs *ctx) { .. ctx->ax .. } to be incorrectly marked as PTR_TO_PACKET which later caused verifier to reject the program that was actually valid in tracing context. Fix this by doing program type specific matching of ctx offsets. Fixes: 969bf05eb3ce ("bpf: direct packet access") Reported-by: Sasha Goldshtein Signed-off-by: Alexei Starovoitov Acked-by: Daniel Borkmann Signed-off-by: David S. Miller --- include/linux/bpf.h | 28 +++++++++++++++++++++++++++- kernel/bpf/verifier.c | 41 +++++++---------------------------------- kernel/trace/bpf_trace.c | 6 ++++-- net/core/filter.c | 16 ++++++++++++++-- 4 files changed, 52 insertions(+), 39 deletions(-) diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 8ee27b8afe81..8269cafc6eb1 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -111,6 +111,31 @@ enum bpf_access_type { BPF_WRITE = 2 }; +/* types of values stored in eBPF registers */ +enum bpf_reg_type { + NOT_INIT = 0, /* nothing was written into register */ + UNKNOWN_VALUE, /* reg doesn't contain a valid pointer */ + PTR_TO_CTX, /* reg points to bpf_context */ + CONST_PTR_TO_MAP, /* reg points to struct bpf_map */ + PTR_TO_MAP_VALUE, /* reg points to map element value */ + PTR_TO_MAP_VALUE_OR_NULL,/* points to map elem value or NULL */ + FRAME_PTR, /* reg == frame_pointer */ + PTR_TO_STACK, /* reg == frame_pointer + imm */ + CONST_IMM, /* constant integer value */ + + /* PTR_TO_PACKET represents: + * skb->data + * skb->data + imm + * skb->data + (u16) var + * skb->data + (u16) var + imm + * if (range > 0) then [ptr, ptr + range - off) is safe to access + * if (id > 0) means that some 'var' was added + * if (off > 0) menas that 'imm' was added + */ + PTR_TO_PACKET, + PTR_TO_PACKET_END, /* skb->data + headlen */ +}; + struct bpf_prog; struct bpf_verifier_ops { @@ -120,7 +145,8 @@ struct bpf_verifier_ops { /* return true if 'size' wide access at offset 'off' within bpf_context * with 'type' (read or write) is allowed */ - bool (*is_valid_access)(int off, int size, enum bpf_access_type type); + bool (*is_valid_access)(int off, int size, enum bpf_access_type type, + enum bpf_reg_type *reg_type); u32 (*convert_ctx_access)(enum bpf_access_type type, int dst_reg, int src_reg, int ctx_off, diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 668e07903c8f..eec9f90ba030 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -126,31 +126,6 @@ * are set to NOT_INIT to indicate that they are no longer readable. */ -/* types of values stored in eBPF registers */ -enum bpf_reg_type { - NOT_INIT = 0, /* nothing was written into register */ - UNKNOWN_VALUE, /* reg doesn't contain a valid pointer */ - PTR_TO_CTX, /* reg points to bpf_context */ - CONST_PTR_TO_MAP, /* reg points to struct bpf_map */ - PTR_TO_MAP_VALUE, /* reg points to map element value */ - PTR_TO_MAP_VALUE_OR_NULL,/* points to map elem value or NULL */ - FRAME_PTR, /* reg == frame_pointer */ - PTR_TO_STACK, /* reg == frame_pointer + imm */ - CONST_IMM, /* constant integer value */ - - /* PTR_TO_PACKET represents: - * skb->data - * skb->data + imm - * skb->data + (u16) var - * skb->data + (u16) var + imm - * if (range > 0) then [ptr, ptr + range - off) is safe to access - * if (id > 0) means that some 'var' was added - * if (off > 0) menas that 'imm' was added - */ - PTR_TO_PACKET, - PTR_TO_PACKET_END, /* skb->data + headlen */ -}; - struct reg_state { enum bpf_reg_type type; union { @@ -695,10 +670,10 @@ static int check_packet_access(struct verifier_env *env, u32 regno, int off, /* check access to 'struct bpf_context' fields */ static int check_ctx_access(struct verifier_env *env, int off, int size, - enum bpf_access_type t) + enum bpf_access_type t, enum bpf_reg_type *reg_type) { if (env->prog->aux->ops->is_valid_access && - env->prog->aux->ops->is_valid_access(off, size, t)) { + env->prog->aux->ops->is_valid_access(off, size, t, reg_type)) { /* remember the offset of last byte accessed in ctx */ if (env->prog->aux->max_ctx_offset < off + size) env->prog->aux->max_ctx_offset = off + size; @@ -798,21 +773,19 @@ static int check_mem_access(struct verifier_env *env, u32 regno, int off, mark_reg_unknown_value(state->regs, value_regno); } else if (reg->type == PTR_TO_CTX) { + enum bpf_reg_type reg_type = UNKNOWN_VALUE; + if (t == BPF_WRITE && value_regno >= 0 && is_pointer_value(env, value_regno)) { verbose("R%d leaks addr into ctx\n", value_regno); return -EACCES; } - err = check_ctx_access(env, off, size, t); + err = check_ctx_access(env, off, size, t, ®_type); if (!err && t == BPF_READ && value_regno >= 0) { mark_reg_unknown_value(state->regs, value_regno); - if (off == offsetof(struct __sk_buff, data) && - env->allow_ptr_leaks) + if (env->allow_ptr_leaks) /* note that reg.[id|off|range] == 0 */ - state->regs[value_regno].type = PTR_TO_PACKET; - else if (off == offsetof(struct __sk_buff, data_end) && - env->allow_ptr_leaks) - state->regs[value_regno].type = PTR_TO_PACKET_END; + state->regs[value_regno].type = reg_type; } } else if (reg->type == FRAME_PTR || reg->type == PTR_TO_STACK) { diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index 720b7bb01d43..e7af6cb9d5cf 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -349,7 +349,8 @@ static const struct bpf_func_proto *kprobe_prog_func_proto(enum bpf_func_id func } /* bpf+kprobe programs can access fields of 'struct pt_regs' */ -static bool kprobe_prog_is_valid_access(int off, int size, enum bpf_access_type type) +static bool kprobe_prog_is_valid_access(int off, int size, enum bpf_access_type type, + enum bpf_reg_type *reg_type) { /* check bounds */ if (off < 0 || off >= sizeof(struct pt_regs)) @@ -427,7 +428,8 @@ static const struct bpf_func_proto *tp_prog_func_proto(enum bpf_func_id func_id) } } -static bool tp_prog_is_valid_access(int off, int size, enum bpf_access_type type) +static bool tp_prog_is_valid_access(int off, int size, enum bpf_access_type type, + enum bpf_reg_type *reg_type) { if (off < sizeof(void *) || off >= PERF_MAX_TRACE_SIZE) return false; diff --git a/net/core/filter.c b/net/core/filter.c index 68adb5f52110..c4b330c85c02 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -2085,7 +2085,8 @@ static bool __is_valid_access(int off, int size, enum bpf_access_type type) } static bool sk_filter_is_valid_access(int off, int size, - enum bpf_access_type type) + enum bpf_access_type type, + enum bpf_reg_type *reg_type) { switch (off) { case offsetof(struct __sk_buff, tc_classid): @@ -2108,7 +2109,8 @@ static bool sk_filter_is_valid_access(int off, int size, } static bool tc_cls_act_is_valid_access(int off, int size, - enum bpf_access_type type) + enum bpf_access_type type, + enum bpf_reg_type *reg_type) { if (type == BPF_WRITE) { switch (off) { @@ -2123,6 +2125,16 @@ static bool tc_cls_act_is_valid_access(int off, int size, return false; } } + + switch (off) { + case offsetof(struct __sk_buff, data): + *reg_type = PTR_TO_PACKET; + break; + case offsetof(struct __sk_buff, data_end): + *reg_type = PTR_TO_PACKET_END; + break; + } + return __is_valid_access(off, size, type); } -- cgit v1.2.3 From ad572d174787daa59e24b8b5c83028c09cdb5ddb Mon Sep 17 00:00:00 2001 From: Alexei Starovoitov Date: Wed, 15 Jun 2016 18:25:39 -0700 Subject: bpf, trace: check event type in bpf_perf_event_read similar to bpf_perf_event_output() the bpf_perf_event_read() helper needs to check the type of the perf_event before reading the counter. Fixes: a43eec304259 ("bpf: introduce bpf_perf_event_output() helper") Reported-by: Daniel Borkmann Signed-off-by: Alexei Starovoitov Acked-by: Daniel Borkmann Signed-off-by: David S. Miller --- kernel/trace/bpf_trace.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index e7af6cb9d5cf..26f603da7e26 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -209,6 +209,10 @@ static u64 bpf_perf_event_read(u64 r1, u64 index, u64 r3, u64 r4, u64 r5) event->pmu->count) return -EINVAL; + if (unlikely(event->attr.type != PERF_TYPE_HARDWARE && + event->attr.type != PERF_TYPE_RAW)) + return -EINVAL; + /* * we don't know if the function is run successfully by the * return value. It can be judged in other places, such as -- cgit v1.2.3 From 4e384ac19b5be6ad084b215d298b82b3a91ad24b Mon Sep 17 00:00:00 2001 From: hayeswang Date: Thu, 16 Jun 2016 10:55:17 +0800 Subject: r8152: disable MAC clock speed down Disable MAC clock speed down. It may casue the first control transfer to contain the wrong data, when the power state change from U1 to U0. Signed-off-by: Hayes Wang Signed-off-by: David S. Miller --- drivers/net/usb/r8152.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 3f9f6ed3eec4..89dc752f92bd 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -3382,15 +3382,11 @@ static void r8153_init(struct r8152 *tp) r8153_power_cut_en(tp, false); r8153_u1u2en(tp, true); - ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL, ALDPS_SPDWN_RATIO); - ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL2, EEE_SPDWN_RATIO); - ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, - PKT_AVAIL_SPDWN_EN | SUSPEND_SPDWN_EN | - U1U2_SPDWN_EN | L1_SPDWN_EN); - ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4, - PWRSAVE_SPDWN_EN | RXDV_SPDWN_EN | TX10MIDLE_EN | - TP100_SPDWN_EN | TP500_SPDWN_EN | TP1000_SPDWN_EN | - EEE_SPDWN_EN); + /* MAC clock speed down */ + ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL, 0); + ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL2, 0); + ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, 0); + ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4, 0); r8153_enable_eee(tp); r8153_aldps_en(tp, true); -- cgit v1.2.3 From 93fe9b1838404fcc3bea320b704bfa461d8e57a6 Mon Sep 17 00:00:00 2001 From: hayeswang Date: Thu, 16 Jun 2016 10:55:18 +0800 Subject: r8152: reset the bmu Reset the BMU to clear the rx/tx fifo. This avoids that the unexpected data remains in the hw. Signed-off-by: Hayes Wang Signed-off-by: David S. Miller --- drivers/net/usb/r8152.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 89dc752f92bd..f5bc351e09ef 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -116,6 +116,7 @@ #define USB_TX_DMA 0xd434 #define USB_TOLERANCE 0xd490 #define USB_LPM_CTRL 0xd41a +#define USB_BMU_RESET 0xd4b0 #define USB_UPS_CTRL 0xd800 #define USB_MISC_0 0xd81a #define USB_POWER_CUT 0xd80a @@ -338,6 +339,10 @@ #define TEST_MODE_DISABLE 0x00000001 #define TX_SIZE_ADJUST1 0x00000100 +/* USB_BMU_RESET */ +#define BMU_RESET_EP_IN 0x01 +#define BMU_RESET_EP_OUT 0x02 + /* USB_UPS_CTRL */ #define POWER_CUT 0x0100 @@ -2456,6 +2461,17 @@ static void r8153_teredo_off(struct r8152 *tp) ocp_write_dword(tp, MCU_TYPE_PLA, PLA_TEREDO_TIMER, 0); } +static void rtl_reset_bmu(struct r8152 *tp) +{ + u32 ocp_data; + + ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_BMU_RESET); + ocp_data &= ~(BMU_RESET_EP_IN | BMU_RESET_EP_OUT); + ocp_write_byte(tp, MCU_TYPE_USB, USB_BMU_RESET, ocp_data); + ocp_data |= BMU_RESET_EP_IN | BMU_RESET_EP_OUT; + ocp_write_byte(tp, MCU_TYPE_USB, USB_BMU_RESET, ocp_data); +} + static void r8152_aldps_en(struct r8152 *tp, bool enable) { if (enable) { @@ -2681,6 +2697,7 @@ static void r8153_first_init(struct r8152 *tp) r8153_hw_phy_cfg(tp); rtl8152_nic_reset(tp); + rtl_reset_bmu(tp); ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL); ocp_data &= ~NOW_IS_OOB; @@ -2742,6 +2759,7 @@ static void r8153_enter_oob(struct r8152 *tp) ocp_write_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL, ocp_data); rtl_disable(tp); + rtl_reset_bmu(tp); for (i = 0; i < 1000; i++) { ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL); @@ -2803,6 +2821,7 @@ static void rtl8153_disable(struct r8152 *tp) { r8153_aldps_en(tp, false); rtl_disable(tp); + rtl_reset_bmu(tp); r8153_aldps_en(tp, true); usb_enable_lpm(tp->udev); } -- cgit v1.2.3 From a59e6d815226b70780427648e359da9bbee07171 Mon Sep 17 00:00:00 2001 From: hayeswang Date: Thu, 16 Jun 2016 10:55:19 +0800 Subject: r8152: correct the rx early size The rx early size should be (agg_buf_sz - packet size) / 8 Signed-off-by: Hayes Wang Signed-off-by: David S. Miller --- drivers/net/usb/r8152.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index f5bc351e09ef..4e257b8d8f3e 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -31,7 +31,7 @@ #define NETNEXT_VERSION "08" /* Information for net */ -#define NET_VERSION "3" +#define NET_VERSION "4" #define DRIVER_VERSION "v1." NETNEXT_VERSION "." NET_VERSION #define DRIVER_AUTHOR "Realtek linux nic maintainers " @@ -2174,7 +2174,7 @@ static void r8153_set_rx_early_timeout(struct r8152 *tp) static void r8153_set_rx_early_size(struct r8152 *tp) { u32 mtu = tp->netdev->mtu; - u32 ocp_data = (agg_buf_sz - mtu - VLAN_ETH_HLEN - VLAN_HLEN) / 4; + u32 ocp_data = (agg_buf_sz - mtu - VLAN_ETH_HLEN - VLAN_HLEN) / 8; ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_SIZE, ocp_data); } -- cgit v1.2.3 From 362761299eea7dfc3a4870551de36e08758b9254 Mon Sep 17 00:00:00 2001 From: Marcin Niestroj Date: Tue, 14 Jun 2016 15:29:24 +0200 Subject: power_supply: tps65217-charger: Fix NULL deref during property export This bug leads to: [ 1.906411] Unable to handle kernel NULL pointer dereference at virtual address 0000000c [ 1.914878] pgd = c0004000 [ 1.917786] [0000000c] *pgd=00000000 [ 1.921536] Internal error: Oops: 5 [#1] SMP ARM [ 1.926357] Modules linked in: [ 1.929556] CPU: 0 PID: 14 Comm: kworker/0:1 Not tainted 4.4.5 #18 [ 1.936006] Hardware name: Generic AM33XX (Flattened Device Tree) [ 1.942383] Workqueue: events power_supply_changed_work [ 1.947842] task: de2c41c0 ti: de2c8000 task.ti: de2c8000 [ 1.953483] PC is at tps65217_ac_get_property+0x14/0x28 [ 1.958937] LR is at tps65217_ac_get_property+0x10/0x28 Driver was trying to use drv_data in property get handler. However drv_data was not set, so it caused NULL pointer dereference. This patch properly sets drv_data during probe by power_supply_config parameter, so the property get handler works as desired. Signed-off-by: Marcin Niestroj Fixes: 3636859b280c ("power_supply: Add support for tps65217-charger") Signed-off-by: Sebastian Reichel --- drivers/power/tps65217_charger.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/power/tps65217_charger.c b/drivers/power/tps65217_charger.c index d9f56730c735..73dfae41def8 100644 --- a/drivers/power/tps65217_charger.c +++ b/drivers/power/tps65217_charger.c @@ -197,6 +197,7 @@ static int tps65217_charger_probe(struct platform_device *pdev) { struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent); struct tps65217_charger *charger; + struct power_supply_config cfg = {}; int ret; dev_dbg(&pdev->dev, "%s\n", __func__); @@ -208,9 +209,12 @@ static int tps65217_charger_probe(struct platform_device *pdev) charger->tps = tps; charger->dev = &pdev->dev; + cfg.of_node = pdev->dev.of_node; + cfg.drv_data = charger; + charger->ac = devm_power_supply_register(&pdev->dev, &tps65217_charger_desc, - NULL); + &cfg); if (IS_ERR(charger->ac)) { dev_err(&pdev->dev, "failed: power supply register\n"); return PTR_ERR(charger->ac); -- cgit v1.2.3 From c70410cb91de70707a507ee7beef7021a5a89f0d Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Thu, 9 Jun 2016 14:38:50 -0400 Subject: rtl8xxxu: fix typo on variable name, compare against correct variable path_b_ok is being assigned but immediately after path_a_ok is being compared to the value 0x03. This appears to be a typo on the variable name, compare path_b_ok instead. Signed-off-by: Colin Ian King Signed-off-by: Jes Sorensen Signed-off-by: Kalle Valo --- drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c index fe19ace0d6a0..b04cf30f3959 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c @@ -1149,7 +1149,7 @@ static void rtl8192eu_phy_iqcalibrate(struct rtl8xxxu_priv *priv, for (i = 0; i < retry; i++) { path_b_ok = rtl8192eu_rx_iqk_path_b(priv); - if (path_a_ok == 0x03) { + if (path_b_ok == 0x03) { val32 = rtl8xxxu_read32(priv, REG_RX_POWER_BEFORE_IQK_B_2); result[t][6] = (val32 >> 16) & 0x3ff; -- cgit v1.2.3 From 17471c7ba5115ed724d624577b21c166d2194272 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 15 Jun 2016 22:31:10 +0200 Subject: net: sfc: avoid -Wtype-limits warning When building with -Wextra, we get a harmless warning from the EFX_EXTRACT_OWORD32 macro: ethernet/sfc/farch.c: In function 'efx_farch_test_registers': ethernet/sfc/farch.c:119:30: error: comparison of unsigned expression < 0 is always false [-Werror=type-limits] ethernet/sfc/farch.c:124:144: error: comparison of unsigned expression < 0 is always false [-Werror=type-limits] ethernet/sfc/farch.c:124:392: error: comparison of unsigned expression < 0 is always false [-Werror=type-limits] ethernet/sfc/farch.c:124:731: error: comparison of unsigned expression < 0 is always false [-Werror=type-limits] The macro and the caller are both correct, but we can avoid the warning by changing the index variable to a signed type. Signed-off-by: Arnd Bergmann Acked-by: Bert Kenward Signed-off-by: David S. Miller --- drivers/net/ethernet/sfc/farch.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/sfc/farch.c b/drivers/net/ethernet/sfc/farch.c index 133e9e35be9e..4c83739d158f 100644 --- a/drivers/net/ethernet/sfc/farch.c +++ b/drivers/net/ethernet/sfc/farch.c @@ -104,7 +104,8 @@ int efx_farch_test_registers(struct efx_nic *efx, const struct efx_farch_register_test *regs, size_t n_regs) { - unsigned address = 0, i, j; + unsigned address = 0; + int i, j; efx_oword_t mask, imask, original, reg, buf; for (i = 0; i < n_regs; ++i) { -- cgit v1.2.3 From a547224dceed4645139f7eff72ff51adb9938bcb Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Wed, 15 Jun 2016 14:42:11 -0700 Subject: mlx4e: Do not attempt to offload VXLAN ports that are unrecognized The mlx4e driver does not support more than one port for VXLAN offload. As such expecting the hardware to offload other ports is invalid since it appears the parsing logic is used to perform Tx checksum and segmentation offloads. Use the vxlan_port number to determine in which cases we can apply the offload and in which cases we can not. Signed-off-by: Alexander Duyck Reviewed-by: Tariq Toukan Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 19ceced6736c..a2c25365a8a3 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -2447,9 +2447,14 @@ static netdev_features_t mlx4_en_features_check(struct sk_buff *skb, * strip that feature if this is an IPv6 encapsulated frame. */ if (skb->encapsulation && - (skb->ip_summed == CHECKSUM_PARTIAL) && - (ip_hdr(skb)->version != 4)) - features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); + (skb->ip_summed == CHECKSUM_PARTIAL)) { + struct mlx4_en_priv *priv = netdev_priv(dev); + + if (!priv->vxlan_port || + (ip_hdr(skb)->version != 4) || + (udp_hdr(skb)->dest != priv->vxlan_port)) + features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); + } return features; } -- cgit v1.2.3 From 8fa3b8d689a54d6d04ff7803c724fb7aca6ce98e Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 26 May 2016 15:42:13 -0400 Subject: cgroup: set css->id to -1 during init If percpu_ref initialization fails during css_create(), the free path can end up trying to free css->id of zero. As ID 0 is unused, it doesn't cause a critical breakage but it does trigger a warning message. Fix it by setting css->id to -1 from init_and_link_css(). Signed-off-by: Tejun Heo Cc: Wenwei Tao Fixes: 01e586598b22 ("cgroup: release css->id after css_free") Cc: stable@vger.kernel.org # v4.0+ Signed-off-by: Tejun Heo --- kernel/cgroup.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 789b84f973c9..688eb0cd1851 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -5063,6 +5063,7 @@ static void init_and_link_css(struct cgroup_subsys_state *css, memset(css, 0, sizeof(*css)); css->cgroup = cgrp; css->ss = ss; + css->id = -1; INIT_LIST_HEAD(&css->sibling); INIT_LIST_HEAD(&css->children); css->serial_nr = css_serial_nr_next++; -- cgit v1.2.3 From d5d8760b78d0cfafe292f965f599988138b06a70 Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Thu, 16 Jun 2016 17:06:19 +0900 Subject: sit: correct IP protocol used in ipip6_err Since 32b8a8e59c9c ("sit: add IPv4 over IPv4 support") ipip6_err() may be called for packets whose IP protocol is IPPROTO_IPIP as well as those whose IP protocol is IPPROTO_IPV6. In the case of IPPROTO_IPIP packets the correct protocol value is not passed to ipv4_update_pmtu() or ipv4_redirect(). This patch resolves this problem by using the IP protocol of the packet rather than a hard-coded value. This appears to be consistent with the usage of the protocol of a packet by icmp_socket_deliver() the caller of ipip6_err(). I was able to exercise the redirect case by using a setup where an ICMP redirect was received for the destination of the encapsulated packet. However, it appears that although incorrect the protocol field is not used in this case and thus no problem manifests. On inspection it does not appear that a problem will manifest in the fragmentation needed/update pmtu case either. In short I believe this is a cosmetic fix. None the less, the use of IPPROTO_IPV6 seems wrong and confusing. Reviewed-by: Dinan Gunawardena Signed-off-by: Simon Horman Acked-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- net/ipv6/sit.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 0a5a255277e5..0619ac70836d 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -560,13 +560,13 @@ static int ipip6_err(struct sk_buff *skb, u32 info) if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) { ipv4_update_pmtu(skb, dev_net(skb->dev), info, - t->parms.link, 0, IPPROTO_IPV6, 0); + t->parms.link, 0, iph->protocol, 0); err = 0; goto out; } if (type == ICMP_REDIRECT) { ipv4_redirect(skb, dev_net(skb->dev), t->parms.link, 0, - IPPROTO_IPV6, 0); + iph->protocol, 0); err = 0; goto out; } -- cgit v1.2.3 From ce449ba77a2271dce9771fb1f3eb37e4be6a8b81 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Thu, 16 Jun 2016 14:42:50 +0100 Subject: nfp: use correct index to mask link state irq We were using an incorrect define to get the irq vector number. NFP_NET_CFG_LSC is a control BAR offset, LSC interrupt vector index is called NFP_NET_IRQ_LSC_IDX. For machines with less than 30 CPUs this meant that we were disabling/enabling IRQ 0. For bigger hosts we were just playing with the 31st RX/TX interrupt. Fixes: 0ba40af963f0 ("nfp: move link state interrupt request/free calls") Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller --- drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c index fa47c14c743a..ba26bb356b8d 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c @@ -2015,7 +2015,7 @@ static void nfp_net_open_stack(struct nfp_net *nn) netif_tx_wake_all_queues(nn->netdev); - enable_irq(nn->irq_entries[NFP_NET_CFG_LSC].vector); + enable_irq(nn->irq_entries[NFP_NET_IRQ_LSC_IDX].vector); nfp_net_read_link_status(nn); } @@ -2044,7 +2044,7 @@ static int nfp_net_netdev_open(struct net_device *netdev) NFP_NET_IRQ_LSC_IDX, nn->lsc_handler); if (err) goto err_free_exn; - disable_irq(nn->irq_entries[NFP_NET_CFG_LSC].vector); + disable_irq(nn->irq_entries[NFP_NET_IRQ_LSC_IDX].vector); nn->rx_rings = kcalloc(nn->num_rx_rings, sizeof(*nn->rx_rings), GFP_KERNEL); @@ -2133,7 +2133,7 @@ static void nfp_net_close_stack(struct nfp_net *nn) { unsigned int r; - disable_irq(nn->irq_entries[NFP_NET_CFG_LSC].vector); + disable_irq(nn->irq_entries[NFP_NET_IRQ_LSC_IDX].vector); netif_carrier_off(nn->netdev); nn->link_up = false; -- cgit v1.2.3 From 8a092e682f20f193f2070dba2ea1904e95814126 Mon Sep 17 00:00:00 2001 From: Mika Båtsman Date: Fri, 17 Jun 2016 13:31:37 +0300 Subject: regulator: anatop: allow regulator to be in bypass mode MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Bypass support was added in commit d38018f2019c ("regulator: anatop: Add bypass support to digital LDOs"). A check for valid voltage selectors was added in commit da0607c8df5c ("regulator: anatop: Fail on invalid voltage selector") but it also discards all regulators that are in bypass mode. Add check for the bypass setting. Errors below were seen on a Variscite mx6 board. anatop_regulator 20c8000.anatop:regulator-vddcore@140: Failed to read a valid default voltage selector. anatop_regulator: probe of 20c8000.anatop:regulator-vddcore@140 failed with error -22 anatop_regulator 20c8000.anatop:regulator-vddsoc@140: Failed to read a valid default voltage selector. anatop_regulator: probe of 20c8000.anatop:regulator-vddsoc@140 failed with error -22 Fixes: da0607c8df5c ("regulator: anatop: Fail on invalid voltage selector") Signed-off-by: Mika Båtsman Signed-off-by: Mark Brown --- drivers/regulator/anatop-regulator.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/anatop-regulator.c b/drivers/regulator/anatop-regulator.c index 63cd5e68c864..3a6d0290c54c 100644 --- a/drivers/regulator/anatop-regulator.c +++ b/drivers/regulator/anatop-regulator.c @@ -296,7 +296,7 @@ static int anatop_regulator_probe(struct platform_device *pdev) if (!sreg->sel && !strcmp(sreg->name, "vddpu")) sreg->sel = 22; - if (!sreg->sel) { + if (!sreg->bypass && !sreg->sel) { dev_err(&pdev->dev, "Failed to read a valid default voltage selector.\n"); return -EINVAL; } -- cgit v1.2.3 From 8f45927c3cae4db85887700e5415286f766cbaf9 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Fri, 17 Jun 2016 12:54:18 +0200 Subject: netfilter: xt_SYNPROXY: add missing header to Kbuild Matt Whitlock says: Without this line, the file xt_SYNPROXY.h does not get installed in /usr/include/linux/netfilter/, and thus user-space programs cannot make use of it. Reported-by: Matt Whitlock Signed-off-by: Pablo Neira Ayuso --- include/uapi/linux/netfilter/Kbuild | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/netfilter/Kbuild b/include/uapi/linux/netfilter/Kbuild index 1d973d2ba417..cd26d7a0fd07 100644 --- a/include/uapi/linux/netfilter/Kbuild +++ b/include/uapi/linux/netfilter/Kbuild @@ -33,6 +33,7 @@ header-y += xt_NFLOG.h header-y += xt_NFQUEUE.h header-y += xt_RATEEST.h header-y += xt_SECMARK.h +header-y += xt_SYNPROXY.h header-y += xt_TCPMSS.h header-y += xt_TCPOPTSTRIP.h header-y += xt_TEE.h -- cgit v1.2.3 From 1463847e93fe693e89c52b03ab4ede6800d717c1 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Fri, 17 Jun 2016 12:54:18 +0200 Subject: netfilter: xt_SYNPROXY: include missing ./usr/include/linux/netfilter/xt_SYNPROXY.h:11: found __[us]{8,16,32,64} type without #include Reported-by: kbuild test robot Signed-off-by: Pablo Neira Ayuso --- include/uapi/linux/netfilter/xt_SYNPROXY.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/uapi/linux/netfilter/xt_SYNPROXY.h b/include/uapi/linux/netfilter/xt_SYNPROXY.h index 2d59fbaa93c6..ca67e61d2a61 100644 --- a/include/uapi/linux/netfilter/xt_SYNPROXY.h +++ b/include/uapi/linux/netfilter/xt_SYNPROXY.h @@ -1,6 +1,8 @@ #ifndef _XT_SYNPROXY_H #define _XT_SYNPROXY_H +#include + #define XT_SYNPROXY_OPT_MSS 0x01 #define XT_SYNPROXY_OPT_WSCALE 0x02 #define XT_SYNPROXY_OPT_SACK_PERM 0x04 -- cgit v1.2.3 From 6762925df4642aec5629f7971ba477d6930f53f7 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Tue, 31 May 2016 21:47:17 +0900 Subject: phy: rcar-gen3-usb2: fix unexpected repeat interrupts of VBUS change This patch fixes an issue that the driver is possible to cause unexpected repeat interrupts if a board condition is wrong (e.g. even if the ID pin is as function, a board supplies the VBUS.) The reason why unexpected repeat interrupts happen is: 1) The driver changed the mode to function if it detected the ID pin is high and the VBUS is high. 2) After the driver changed function mode, it disabled the "VBUS control" feature. Then, the VBUS signal will be low. 3) Since the VBUS change interruption happened, the driver checked the ID pin and VBUS. 4) Since VBUS was low, the driver changed the mode to host and enabled the "VBUS control" feature. Then the VBUS signal will be high. 5) Since the VBUS change interruption happened, the driver did 1) above. So, this patch modified the condition in rcar_gen3_device_recognition() to check the ID pin only. Fixes: 1114e2d (phy: rcar-gen3-usb2: change the mode to OTG on the combined channel) Cc: # v4.5+ Reported-by: Simon Horman Signed-off-by: Yoshihiro Shimoda Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-rcar-gen3-usb2.c | 14 +------------- 1 file changed, 1 insertion(+), 13 deletions(-) diff --git a/drivers/phy/phy-rcar-gen3-usb2.c b/drivers/phy/phy-rcar-gen3-usb2.c index 76bb88f0700a..4be3f5dbbc9f 100644 --- a/drivers/phy/phy-rcar-gen3-usb2.c +++ b/drivers/phy/phy-rcar-gen3-usb2.c @@ -144,12 +144,6 @@ static void rcar_gen3_init_for_peri(struct rcar_gen3_chan *ch) extcon_set_cable_state_(ch->extcon, EXTCON_USB, true); } -static bool rcar_gen3_check_vbus(struct rcar_gen3_chan *ch) -{ - return !!(readl(ch->base + USB2_ADPCTRL) & - USB2_ADPCTRL_OTGSESSVLD); -} - static bool rcar_gen3_check_id(struct rcar_gen3_chan *ch) { return !!(readl(ch->base + USB2_ADPCTRL) & USB2_ADPCTRL_IDDIG); @@ -157,13 +151,7 @@ static bool rcar_gen3_check_id(struct rcar_gen3_chan *ch) static void rcar_gen3_device_recognition(struct rcar_gen3_chan *ch) { - bool is_host = true; - - /* B-device? */ - if (rcar_gen3_check_id(ch) && rcar_gen3_check_vbus(ch)) - is_host = false; - - if (is_host) + if (!rcar_gen3_check_id(ch)) rcar_gen3_init_for_host(ch); else rcar_gen3_init_for_peri(ch); -- cgit v1.2.3 From 075adb8046532d9642f411a92b4f385d04ced24d Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Mon, 13 Jun 2016 23:31:47 +0000 Subject: phy: rockchip-dp: fix return value check in rockchip_dp_phy_probe() In case of error, the function devm_kzalloc() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Signed-off-by: Wei Yongjun Reviewed-by: Heiko Stuebner Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-rockchip-dp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/phy/phy-rockchip-dp.c b/drivers/phy/phy-rockchip-dp.c index 793ecb6d87bc..8b267a746576 100644 --- a/drivers/phy/phy-rockchip-dp.c +++ b/drivers/phy/phy-rockchip-dp.c @@ -90,7 +90,7 @@ static int rockchip_dp_phy_probe(struct platform_device *pdev) return -ENODEV; dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL); - if (IS_ERR(dp)) + if (!dp) return -ENOMEM; dp->dev = dev; -- cgit v1.2.3 From 5cf700ac9d50353dc5b8194a57c6f40bf1fc4424 Mon Sep 17 00:00:00 2001 From: Quentin Schulz Date: Mon, 13 Jun 2016 13:45:48 +0200 Subject: phy: phy-sun4i-usb: Fix optional gpios failing probe The interrupt 0 is not a valid interrupt number. In the event where the retrieval of the vbus-det gpio would return null, the gpiod_to_irq callback would return 0, while the current code makes the assumption that it is a valid interrupt, and would go on calling request_irq. Obviously, this would fail, preventing the driver from probing properly, while the vbus and id gpios are optional. Signed-off-by: Quentin Schulz Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-sun4i-usb.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c index bae54f7a1f48..45f01d6c9ed2 100644 --- a/drivers/phy/phy-sun4i-usb.c +++ b/drivers/phy/phy-sun4i-usb.c @@ -645,11 +645,11 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev) data->id_det_irq = gpiod_to_irq(data->id_det_gpio); data->vbus_det_irq = gpiod_to_irq(data->vbus_det_gpio); - if ((data->id_det_gpio && data->id_det_irq < 0) || - (data->vbus_det_gpio && data->vbus_det_irq < 0)) + if ((data->id_det_gpio && data->id_det_irq <= 0) || + (data->vbus_det_gpio && data->vbus_det_irq <= 0)) data->phy0_poll = true; - if (data->id_det_irq >= 0) { + if (data->id_det_irq > 0) { ret = devm_request_irq(dev, data->id_det_irq, sun4i_usb_phy0_id_vbus_det_irq, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, @@ -660,7 +660,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev) } } - if (data->vbus_det_irq >= 0) { + if (data->vbus_det_irq > 0) { ret = devm_request_irq(dev, data->vbus_det_irq, sun4i_usb_phy0_id_vbus_det_irq, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, -- cgit v1.2.3 From d99cb37828a2fe344ecc95d1fad570bbe447cc06 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Tue, 7 Jun 2016 18:14:56 +0100 Subject: phy-sun4i-usb: fix missing __iomem * Fix the missing __iomem attribute in sun4i_usb_phy_write() function. This fixes the following sparse warnings: drivers/phy/phy-sun4i-usb.c:178:39: warning: incorrect type in initializer (different address spaces) drivers/phy/phy-sun4i-usb.c:178:39: expected void *phyctl drivers/phy/phy-sun4i-usb.c:178:39: got void [noderef] * drivers/phy/phy-sun4i-usb.c:185:17: warning: incorrect type in argument 2 (different address spaces) drivers/phy/phy-sun4i-usb.c:185:17: expected void volatile [noderef] *addr drivers/phy/phy-sun4i-usb.c:185:17: got void *phyctl drivers/phy/phy-sun4i-usb.c:189:24: warning: incorrect type in argument 1 (different address spaces) drivers/phy/phy-sun4i-usb.c:189:24: expected void const volatile [noderef] *addr drivers/phy/phy-sun4i-usb.c:189:24: got void *phyctl drivers/phy/phy-sun4i-usb.c:196:17: warning: incorrect type in argument 2 (different address spaces) drivers/phy/phy-sun4i-usb.c:196:17: expected void volatile [noderef] *addr drivers/phy/phy-sun4i-usb.c:196:17: got void *phyctl drivers/phy/phy-sun4i-usb.c:199:24: warning: incorrect type in argument 1 (different address spaces) drivers/phy/phy-sun4i-usb.c:199:24: expected void const volatile [noderef] *addr drivers/phy/phy-sun4i-usb.c:199:24: got void *phyctl drivers/phy/phy-sun4i-usb.c:205:17: warning: incorrect type in argument 2 (different address spaces) drivers/phy/phy-sun4i-usb.c:205:17: expected void volatile [noderef] *addr drivers/phy/phy-sun4i-usb.c:205:17: got void *phyctl drivers/phy/phy-sun4i-usb.c:208:24: warning: incorrect type in argument 1 (different address spaces) drivers/phy/phy-sun4i-usb.c:208:24: expected void const volatile [noderef] *addr drivers/phy/phy-sun4i-usb.c:208:24: got void *phyctl drivers/phy/phy-sun4i-usb.c:210:17: warning: incorrect type in argument 2 (different address spaces) drivers/phy/phy-sun4i-usb.c:210:17: expected void volatile [noderef] *addr drivers/phy/phy-sun4i-usb.c:210:17: got void *phyctl drivers/phy/phy-sun4i-usb.c:212:24: warning: incorrect type in argument 1 (different address spaces) drivers/phy/phy-sun4i-usb.c:212:24: expected void const volatile [noderef] *addr drivers/phy/phy-sun4i-usb.c:212:24: got void *phyctl drivers/phy/phy-sun4i-usb.c:214:17: warning: incorrect type in argument 2 (different address spaces) drivers/phy/phy-sun4i-usb.c:214:17: expected void volatile [noderef] *addr drivers/phy/phy-sun4i-usb.c:214:17: got void *phyctl Signed-off-by: Ben Dooks Acked-by: Hans de Goede Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-sun4i-usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c index 45f01d6c9ed2..739029430dda 100644 --- a/drivers/phy/phy-sun4i-usb.c +++ b/drivers/phy/phy-sun4i-usb.c @@ -175,7 +175,7 @@ static void sun4i_usb_phy_write(struct sun4i_usb_phy *phy, u32 addr, u32 data, { struct sun4i_usb_phy_data *phy_data = to_sun4i_usb_phy_data(phy); u32 temp, usbc_bit = BIT(phy->index * 2); - void *phyctl = phy_data->base + phy_data->cfg->phyctl_offset; + void __iomem *phyctl = phy_data->base + phy_data->cfg->phyctl_offset; int i; mutex_lock(&phy_data->mutex); -- cgit v1.2.3 From 6c081ff6fd5abd621797570be43d5e3c6acfcd58 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 10 May 2016 11:01:33 +0300 Subject: phy: bcm-ns-usb2: checking the wrong variable We intended to test "usb2->phy" here instead of "dev". Fixes: d3feb4067335 ('phy: bcm-ns-usb2: new driver for USB 2.0 PHY on Northstar') Signed-off-by: Dan Carpenter Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-bcm-ns-usb2.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/phy/phy-bcm-ns-usb2.c b/drivers/phy/phy-bcm-ns-usb2.c index 95ab6b2a0de5..58dff80e9386 100644 --- a/drivers/phy/phy-bcm-ns-usb2.c +++ b/drivers/phy/phy-bcm-ns-usb2.c @@ -109,8 +109,8 @@ static int bcm_ns_usb2_probe(struct platform_device *pdev) } usb2->phy = devm_phy_create(dev, NULL, &ops); - if (IS_ERR(dev)) - return PTR_ERR(dev); + if (IS_ERR(usb2->phy)) + return PTR_ERR(usb2->phy); phy_set_drvdata(usb2->phy, usb2); platform_set_drvdata(pdev, usb2); -- cgit v1.2.3 From 76bf3441ad6584ddc3aea1501927f21b21ba3a3a Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Tue, 7 Jun 2016 17:49:09 +0100 Subject: ata: sata_mv: fix mis-conversion in mv_write_cached_reg() Fix the signed issue in mv_write_cached_reg() where the laddr is assigned from a (long)addr instead of (unsigned long)addr. Fixes the following warnings: drivers/ata/sata_mv.c:989:26: warning: cast removes address space of expression drivers/ata/sata_mv.c:989:26: warning: cast removes address space of expression drivers/ata/sata_mv.c:989:26: warning: cast removes address space of expression drivers/ata/sata_mv.c:989:26: warning: cast removes address space of expression Signed-off-by: Ben Dooks Signed-off-by: Tejun Heo --- drivers/ata/sata_mv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index bd74ee555278..745489a1c86a 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c @@ -986,7 +986,7 @@ static inline void mv_write_cached_reg(void __iomem *addr, u32 *old, u32 new) * Looks like a lot of fuss, but it avoids an unnecessary * +1 usec read-after-write delay for unaffected registers. */ - laddr = (long)addr & 0xffff; + laddr = (unsigned long)addr & 0xffff; if (laddr >= 0x300 && laddr <= 0x33c) { laddr &= 0x000f; if (laddr == 0x4 || laddr == 0xc) { -- cgit v1.2.3 From f1d048f24e66ba85d3dabf3d076cefa5f2b546b0 Mon Sep 17 00:00:00 2001 From: Jon Paul Maloy Date: Fri, 17 Jun 2016 06:35:57 -0400 Subject: tipc: fix socket timer deadlock We sometimes observe a 'deadly embrace' type deadlock occurring between mutually connected sockets on the same node. This happens when the one-hour peer supervision timers happen to expire simultaneously in both sockets. The scenario is as follows: CPU 1: CPU 2: -------- -------- tipc_sk_timeout(sk1) tipc_sk_timeout(sk2) lock(sk1.slock) lock(sk2.slock) msg_create(probe) msg_create(probe) unlock(sk1.slock) unlock(sk2.slock) tipc_node_xmit_skb() tipc_node_xmit_skb() tipc_node_xmit() tipc_node_xmit() tipc_sk_rcv(sk2) tipc_sk_rcv(sk1) lock(sk2.slock) lock((sk1.slock) filter_rcv() filter_rcv() tipc_sk_proto_rcv() tipc_sk_proto_rcv() msg_create(probe_rsp) msg_create(probe_rsp) tipc_sk_respond() tipc_sk_respond() tipc_node_xmit_skb() tipc_node_xmit_skb() tipc_node_xmit() tipc_node_xmit() tipc_sk_rcv(sk1) tipc_sk_rcv(sk2) lock((sk1.slock) lock((sk2.slock) ===> DEADLOCK ===> DEADLOCK Further analysis reveals that there are three different locations in the socket code where tipc_sk_respond() is called within the context of the socket lock, with ensuing risk of similar deadlocks. We now solve this by passing a buffer queue along with all upcalls where sk_lock.slock may potentially be held. Response or rejected message buffers are accumulated into this queue instead of being sent out directly, and only sent once we know we are safely outside the slock context. Reported-by: GUNA Acked-by: Ying Xue Signed-off-by: Jon Maloy Signed-off-by: David S. Miller --- net/tipc/socket.c | 54 ++++++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 42 insertions(+), 12 deletions(-) diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 88bfcd707064..c49b8df438cb 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -796,9 +796,11 @@ void tipc_sk_mcast_rcv(struct net *net, struct sk_buff_head *arrvq, * @tsk: receiving socket * @skb: pointer to message buffer. */ -static void tipc_sk_proto_rcv(struct tipc_sock *tsk, struct sk_buff *skb) +static void tipc_sk_proto_rcv(struct tipc_sock *tsk, struct sk_buff *skb, + struct sk_buff_head *xmitq) { struct sock *sk = &tsk->sk; + u32 onode = tsk_own_node(tsk); struct tipc_msg *hdr = buf_msg(skb); int mtyp = msg_type(hdr); bool conn_cong; @@ -811,7 +813,8 @@ static void tipc_sk_proto_rcv(struct tipc_sock *tsk, struct sk_buff *skb) if (mtyp == CONN_PROBE) { msg_set_type(hdr, CONN_PROBE_REPLY); - tipc_sk_respond(sk, skb, TIPC_OK); + if (tipc_msg_reverse(onode, &skb, TIPC_OK)) + __skb_queue_tail(xmitq, skb); return; } else if (mtyp == CONN_ACK) { conn_cong = tsk_conn_cong(tsk); @@ -1686,7 +1689,8 @@ static unsigned int rcvbuf_limit(struct sock *sk, struct sk_buff *skb) * * Returns true if message was added to socket receive queue, otherwise false */ -static bool filter_rcv(struct sock *sk, struct sk_buff *skb) +static bool filter_rcv(struct sock *sk, struct sk_buff *skb, + struct sk_buff_head *xmitq) { struct socket *sock = sk->sk_socket; struct tipc_sock *tsk = tipc_sk(sk); @@ -1696,7 +1700,7 @@ static bool filter_rcv(struct sock *sk, struct sk_buff *skb) int usr = msg_user(hdr); if (unlikely(msg_user(hdr) == CONN_MANAGER)) { - tipc_sk_proto_rcv(tsk, skb); + tipc_sk_proto_rcv(tsk, skb, xmitq); return false; } @@ -1739,7 +1743,8 @@ static bool filter_rcv(struct sock *sk, struct sk_buff *skb) return true; reject: - tipc_sk_respond(sk, skb, err); + if (tipc_msg_reverse(tsk_own_node(tsk), &skb, err)) + __skb_queue_tail(xmitq, skb); return false; } @@ -1755,9 +1760,24 @@ reject: static int tipc_backlog_rcv(struct sock *sk, struct sk_buff *skb) { unsigned int truesize = skb->truesize; + struct sk_buff_head xmitq; + u32 dnode, selector; - if (likely(filter_rcv(sk, skb))) + __skb_queue_head_init(&xmitq); + + if (likely(filter_rcv(sk, skb, &xmitq))) { atomic_add(truesize, &tipc_sk(sk)->dupl_rcvcnt); + return 0; + } + + if (skb_queue_empty(&xmitq)) + return 0; + + /* Send response/rejected message */ + skb = __skb_dequeue(&xmitq); + dnode = msg_destnode(buf_msg(skb)); + selector = msg_origport(buf_msg(skb)); + tipc_node_xmit_skb(sock_net(sk), skb, dnode, selector); return 0; } @@ -1771,12 +1791,13 @@ static int tipc_backlog_rcv(struct sock *sk, struct sk_buff *skb) * Caller must hold socket lock */ static void tipc_sk_enqueue(struct sk_buff_head *inputq, struct sock *sk, - u32 dport) + u32 dport, struct sk_buff_head *xmitq) { + unsigned long time_limit = jiffies + 2; + struct sk_buff *skb; unsigned int lim; atomic_t *dcnt; - struct sk_buff *skb; - unsigned long time_limit = jiffies + 2; + u32 onode; while (skb_queue_len(inputq)) { if (unlikely(time_after_eq(jiffies, time_limit))) @@ -1788,7 +1809,7 @@ static void tipc_sk_enqueue(struct sk_buff_head *inputq, struct sock *sk, /* Add message directly to receive queue if possible */ if (!sock_owned_by_user(sk)) { - filter_rcv(sk, skb); + filter_rcv(sk, skb, xmitq); continue; } @@ -1801,7 +1822,9 @@ static void tipc_sk_enqueue(struct sk_buff_head *inputq, struct sock *sk, continue; /* Overload => reject message back to sender */ - tipc_sk_respond(sk, skb, TIPC_ERR_OVERLOAD); + onode = tipc_own_addr(sock_net(sk)); + if (tipc_msg_reverse(onode, &skb, TIPC_ERR_OVERLOAD)) + __skb_queue_tail(xmitq, skb); break; } } @@ -1814,12 +1837,14 @@ static void tipc_sk_enqueue(struct sk_buff_head *inputq, struct sock *sk, */ void tipc_sk_rcv(struct net *net, struct sk_buff_head *inputq) { + struct sk_buff_head xmitq; u32 dnode, dport = 0; int err; struct tipc_sock *tsk; struct sock *sk; struct sk_buff *skb; + __skb_queue_head_init(&xmitq); while (skb_queue_len(inputq)) { dport = tipc_skb_peek_port(inputq, dport); tsk = tipc_sk_lookup(net, dport); @@ -1827,9 +1852,14 @@ void tipc_sk_rcv(struct net *net, struct sk_buff_head *inputq) if (likely(tsk)) { sk = &tsk->sk; if (likely(spin_trylock_bh(&sk->sk_lock.slock))) { - tipc_sk_enqueue(inputq, sk, dport); + tipc_sk_enqueue(inputq, sk, dport, &xmitq); spin_unlock_bh(&sk->sk_lock.slock); } + /* Send pending response/rejected messages, if any */ + while ((skb = __skb_dequeue(&xmitq))) { + dnode = msg_destnode(buf_msg(skb)); + tipc_node_xmit_skb(net, skb, dnode, dport); + } sock_put(sk); continue; } -- cgit v1.2.3 From 63dcdd35c1552ca0c911e98ba3389a0729a457f4 Mon Sep 17 00:00:00 2001 From: Nogah Frankel Date: Fri, 17 Jun 2016 15:09:05 +0200 Subject: mlxsw: spectrum: Don't count internal TX header bytes to stats Stop the SW TX counter from counting the TX header bytes since they are not being sent out. Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC") Reviewed-by: Ido Schimmel Signed-off-by: Nogah Frankel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 6f9e3ddff4a8..660429ebfbe1 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -408,7 +408,11 @@ static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb, } mlxsw_sp_txhdr_construct(skb, &tx_info); - len = skb->len; + /* TX header is consumed by HW on the way so we shouldn't count its + * bytes as being sent. + */ + len = skb->len - MLXSW_TXHDR_LEN; + /* Due to a race we might fail here because of a full queue. In that * unlikely case we simply drop the packet. */ -- cgit v1.2.3 From 4e239fac7c6b9d703e83c81b52ec9fec00c50129 Mon Sep 17 00:00:00 2001 From: Nogah Frankel Date: Fri, 17 Jun 2016 15:09:06 +0200 Subject: mlxsw: switchx2: Don't count internal TX header bytes to stats Stop the SW TX counter from counting the TX header bytes since they are not being sent out. Fixes: e577516b9db3 ("mlxsw: Fix use-after-free bug in mlxsw_sx_port_xmit") Signed-off-by: Nogah Frankel Reviewed-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/switchx2.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/switchx2.c b/drivers/net/ethernet/mellanox/mlxsw/switchx2.c index 3842eab9449a..25f658b3849a 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/switchx2.c +++ b/drivers/net/ethernet/mellanox/mlxsw/switchx2.c @@ -316,7 +316,10 @@ static netdev_tx_t mlxsw_sx_port_xmit(struct sk_buff *skb, } } mlxsw_sx_txhdr_construct(skb, &tx_info); - len = skb->len; + /* TX header is consumed by HW on the way so we shouldn't count its + * bytes as being sent. + */ + len = skb->len - MLXSW_TXHDR_LEN; /* Due to a race we might fail here because of a full queue. In that * unlikely case we simply drop the packet. */ -- cgit v1.2.3 From a9836cbb5fc885d3b8f3b91b2d47525f7269dec1 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 17 Jun 2016 18:15:30 +0200 Subject: net: tilegx: use correct timespec64 type The conversion to the 64-bit time based ptp methods left two instances of 'struct timespec' in place. This is harmless because 64-bit architectures define timespec64 as timespec, and this driver is not used on 32-bit machines. However, using 'struct timespec64' directly is obviously the right thing to do, and will help us remove 'struct timespec' in the future. Signed-off-by: Arnd Bergmann Fixes: b9acf24f779c ("ptp: tilegx: convert to the 64 bit get/set time methods.") Acked-by: Richard Cochran Signed-off-by: David S. Miller --- drivers/net/ethernet/tile/tilegx.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/tile/tilegx.c b/drivers/net/ethernet/tile/tilegx.c index 0a15acc075b3..11213a38c795 100644 --- a/drivers/net/ethernet/tile/tilegx.c +++ b/drivers/net/ethernet/tile/tilegx.c @@ -462,7 +462,7 @@ static void tile_tx_timestamp(struct sk_buff *skb, int instance) if (unlikely((shtx->tx_flags & SKBTX_HW_TSTAMP) != 0)) { struct mpipe_data *md = &mpipe_data[instance]; struct skb_shared_hwtstamps shhwtstamps; - struct timespec ts; + struct timespec64 ts; shtx->tx_flags |= SKBTX_IN_PROGRESS; gxio_mpipe_get_timestamp(&md->context, &ts); @@ -886,9 +886,9 @@ static struct ptp_clock_info ptp_mpipe_caps = { /* Sync mPIPE's timestamp up with Linux system time and register PTP clock. */ static void register_ptp_clock(struct net_device *dev, struct mpipe_data *md) { - struct timespec ts; + struct timespec64 ts; - getnstimeofday(&ts); + ktime_get_ts64(&ts); gxio_mpipe_set_timestamp(&md->context, &ts); mutex_init(&md->ptp_lock); -- cgit v1.2.3 From 3bb549ae4c51028c1930528ae9fcd6eca0474724 Mon Sep 17 00:00:00 2001 From: Sowmini Varadhan Date: Fri, 17 Jun 2016 16:12:12 -0400 Subject: RDS: TCP: rds_tcp_accept_one() should transition socket from RESETTING to UP The state of the rds_connection after rds_tcp_reset_callbacks() would be RDS_CONN_RESETTING and this is the value that should be passed by rds_tcp_accept_one() to rds_connect_path_complete() to transition the socket to RDS_CONN_UP. Fixes: b5c21c0947c1 ("RDS: TCP: fix race windows in send-path quiescence by rds_tcp_accept_one()") Signed-off-by: Sowmini Varadhan Acked-by: Santosh Shilimkar Signed-off-by: David S. Miller --- net/rds/tcp_listen.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/rds/tcp_listen.c b/net/rds/tcp_listen.c index 686b1d03a558..245542ca4718 100644 --- a/net/rds/tcp_listen.c +++ b/net/rds/tcp_listen.c @@ -138,7 +138,7 @@ int rds_tcp_accept_one(struct socket *sock) rds_tcp_reset_callbacks(new_sock, conn); conn->c_outgoing = 0; /* rds_connect_path_complete() marks RDS_CONN_UP */ - rds_connect_path_complete(conn, RDS_CONN_DISCONNECTING); + rds_connect_path_complete(conn, RDS_CONN_RESETTING); } } else { rds_tcp_set_callbacks(new_sock, conn); -- cgit v1.2.3 From 3720b69bafe9ccb989b9a8604f3e3f89b3610685 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sat, 18 Jun 2016 10:10:26 -0700 Subject: Input: add BUS_CEC type Inputs can come in over the HDMI CEC bus, so add a new type for this. Signed-off-by: Hans Verkuil Signed-off-by: Dmitry Torokhov --- include/uapi/linux/input.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h index 01113841190d..c51494119817 100644 --- a/include/uapi/linux/input.h +++ b/include/uapi/linux/input.h @@ -247,6 +247,7 @@ struct input_mask { #define BUS_ATARI 0x1B #define BUS_SPI 0x1C #define BUS_RMI 0x1D +#define BUS_CEC 0x1E /* * MT_TOOL types -- cgit v1.2.3 From 488326947cd1f038da8d2c9068a0d07b913b7983 Mon Sep 17 00:00:00 2001 From: Kamil Debski Date: Sat, 18 Jun 2016 10:10:56 -0700 Subject: Input: add HDMI CEC specific keycodes Add HDMI CEC specific keycodes to the keycodes definition. Signed-off-by: Kamil Debski Signed-off-by: Hans Verkuil Signed-off-by: Dmitry Torokhov --- include/uapi/linux/input-event-codes.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h index 87cf351bab03..737fa32faad4 100644 --- a/include/uapi/linux/input-event-codes.h +++ b/include/uapi/linux/input-event-codes.h @@ -611,6 +611,37 @@ #define KEY_KBDINPUTASSIST_ACCEPT 0x264 #define KEY_KBDINPUTASSIST_CANCEL 0x265 +/* Diagonal movement keys */ +#define KEY_RIGHT_UP 0x266 +#define KEY_RIGHT_DOWN 0x267 +#define KEY_LEFT_UP 0x268 +#define KEY_LEFT_DOWN 0x269 + +#define KEY_ROOT_MENU 0x26a /* Show Device's Root Menu */ +/* Show Top Menu of the Media (e.g. DVD) */ +#define KEY_MEDIA_TOP_MENU 0x26b +#define KEY_NUMERIC_11 0x26c +#define KEY_NUMERIC_12 0x26d +/* + * Toggle Audio Description: refers to an audio service that helps blind and + * visually impaired consumers understand the action in a program. Note: in + * some countries this is referred to as "Video Description". + */ +#define KEY_AUDIO_DESC 0x26e +#define KEY_3D_MODE 0x26f +#define KEY_NEXT_FAVORITE 0x270 +#define KEY_STOP_RECORD 0x271 +#define KEY_PAUSE_RECORD 0x272 +#define KEY_VOD 0x273 /* Video on Demand */ +#define KEY_UNMUTE 0x274 +#define KEY_FASTREVERSE 0x275 +#define KEY_SLOWREVERSE 0x276 +/* + * Control a data application associated with the currently viewed channel, + * e.g. teletext or data broadcast application (MHEG, MHP, HbbTV, etc.) + */ +#define KEY_DATA 0x275 + #define BTN_TRIGGER_HAPPY 0x2c0 #define BTN_TRIGGER_HAPPY1 0x2c0 #define BTN_TRIGGER_HAPPY2 0x2c1 -- cgit v1.2.3 From 30172936eefb70c27fade1bc912a25fc90827b76 Mon Sep 17 00:00:00 2001 From: Pali Rohár Date: Sat, 18 Jun 2016 17:47:38 -0700 Subject: MAINTAINERS: add Pali Rohár as reviewer of ALPS PS/2 touchpad driver MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Pali Rohár Signed-off-by: Dmitry Torokhov --- MAINTAINERS | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 9c567a431d8d..630151ff1b26 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -596,6 +596,10 @@ S: Odd Fixes L: linux-alpha@vger.kernel.org F: arch/alpha/ +ALPS PS/2 TOUCHPAD DRIVER +R: Pali Rohár +F: drivers/input/mouse/alps.* + ALTERA MAILBOX DRIVER M: Ley Foon Tan L: nios2-dev@lists.rocketboards.org (moderated for non-subscribers) -- cgit v1.2.3 From 4a7d99ea1b27734558feb6833f180cd38a159940 Mon Sep 17 00:00:00 2001 From: Basil Gunn Date: Thu, 16 Jun 2016 09:42:30 -0700 Subject: AX.25: Close socket connection on session completion A socket connection made in ax.25 is not closed when session is completed. The heartbeat timer is stopped prematurely and this is where the socket gets closed. Allow heatbeat timer to run to close socket. Symptom occurs in kernels >= 4.2.0 Originally sent 6/15/2016. Resend with distribution list matching scripts/maintainer.pl output. Signed-off-by: Basil Gunn Signed-off-by: David S. Miller --- net/ax25/af_ax25.c | 3 ++- net/ax25/ax25_ds_timer.c | 5 ++++- net/ax25/ax25_std_timer.c | 5 ++++- net/ax25/ax25_subr.c | 3 ++- 4 files changed, 12 insertions(+), 4 deletions(-) diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c index fbd0acf80b13..2fdebabbfacd 100644 --- a/net/ax25/af_ax25.c +++ b/net/ax25/af_ax25.c @@ -976,7 +976,8 @@ static int ax25_release(struct socket *sock) release_sock(sk); ax25_disconnect(ax25, 0); lock_sock(sk); - ax25_destroy_socket(ax25); + if (!sock_flag(ax25->sk, SOCK_DESTROY)) + ax25_destroy_socket(ax25); break; case AX25_STATE_3: diff --git a/net/ax25/ax25_ds_timer.c b/net/ax25/ax25_ds_timer.c index 951cd57bb07d..5237dff6941d 100644 --- a/net/ax25/ax25_ds_timer.c +++ b/net/ax25/ax25_ds_timer.c @@ -102,6 +102,7 @@ void ax25_ds_heartbeat_expiry(ax25_cb *ax25) switch (ax25->state) { case AX25_STATE_0: + case AX25_STATE_2: /* Magic here: If we listen() and a new link dies before it is accepted() it isn't 'dead' so doesn't get removed. */ if (!sk || sock_flag(sk, SOCK_DESTROY) || @@ -111,6 +112,7 @@ void ax25_ds_heartbeat_expiry(ax25_cb *ax25) sock_hold(sk); ax25_destroy_socket(ax25); bh_unlock_sock(sk); + /* Ungrab socket and destroy it */ sock_put(sk); } else ax25_destroy_socket(ax25); @@ -213,7 +215,8 @@ void ax25_ds_t1_timeout(ax25_cb *ax25) case AX25_STATE_2: if (ax25->n2count == ax25->n2) { ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND); - ax25_disconnect(ax25, ETIMEDOUT); + if (!sock_flag(ax25->sk, SOCK_DESTROY)) + ax25_disconnect(ax25, ETIMEDOUT); return; } else { ax25->n2count++; diff --git a/net/ax25/ax25_std_timer.c b/net/ax25/ax25_std_timer.c index 004467c9e6e1..2c0d6ef66f9d 100644 --- a/net/ax25/ax25_std_timer.c +++ b/net/ax25/ax25_std_timer.c @@ -38,6 +38,7 @@ void ax25_std_heartbeat_expiry(ax25_cb *ax25) switch (ax25->state) { case AX25_STATE_0: + case AX25_STATE_2: /* Magic here: If we listen() and a new link dies before it is accepted() it isn't 'dead' so doesn't get removed. */ if (!sk || sock_flag(sk, SOCK_DESTROY) || @@ -47,6 +48,7 @@ void ax25_std_heartbeat_expiry(ax25_cb *ax25) sock_hold(sk); ax25_destroy_socket(ax25); bh_unlock_sock(sk); + /* Ungrab socket and destroy it */ sock_put(sk); } else ax25_destroy_socket(ax25); @@ -144,7 +146,8 @@ void ax25_std_t1timer_expiry(ax25_cb *ax25) case AX25_STATE_2: if (ax25->n2count == ax25->n2) { ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND); - ax25_disconnect(ax25, ETIMEDOUT); + if (!sock_flag(ax25->sk, SOCK_DESTROY)) + ax25_disconnect(ax25, ETIMEDOUT); return; } else { ax25->n2count++; diff --git a/net/ax25/ax25_subr.c b/net/ax25/ax25_subr.c index 3b78e8473a01..655a7d4c96e1 100644 --- a/net/ax25/ax25_subr.c +++ b/net/ax25/ax25_subr.c @@ -264,7 +264,8 @@ void ax25_disconnect(ax25_cb *ax25, int reason) { ax25_clear_queues(ax25); - ax25_stop_heartbeat(ax25); + if (!sock_flag(ax25->sk, SOCK_DESTROY)) + ax25_stop_heartbeat(ax25); ax25_stop_t1timer(ax25); ax25_stop_t2timer(ax25); ax25_stop_t3timer(ax25); -- cgit v1.2.3 From 5c3da57d70f1ef1d9b60900b84a74d77a9cf0774 Mon Sep 17 00:00:00 2001 From: Joshua Houghton Date: Sat, 18 Jun 2016 15:46:31 +0000 Subject: net: rds: fix coding style issues Fix coding style issues in the following files: ib_cm.c: add space loop.c: convert spaces to tabs sysctl.c: add space tcp.h: convert spaces to tabs tcp_connect.c:remove extra indentation in switch statement tcp_recv.c: convert spaces to tabs tcp_send.c: convert spaces to tabs transport.c: move brace up one line on for statement Signed-off-by: Joshua Houghton Acked-by: Santosh Shilimkar Signed-off-by: David S. Miller --- net/rds/ib_cm.c | 2 +- net/rds/loop.c | 5 +++-- net/rds/sysctl.c | 3 ++- net/rds/tcp.h | 2 +- net/rds/tcp_connect.c | 26 +++++++++++++------------- net/rds/tcp_recv.c | 2 +- net/rds/tcp_send.c | 14 +++++++------- net/rds/transport.c | 3 +-- 8 files changed, 29 insertions(+), 28 deletions(-) diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c index 310cabce2311..7c2a65a6af5c 100644 --- a/net/rds/ib_cm.c +++ b/net/rds/ib_cm.c @@ -111,7 +111,7 @@ void rds_ib_cm_connect_complete(struct rds_connection *conn, struct rdma_cm_even } } - if (conn->c_version < RDS_PROTOCOL(3,1)) { + if (conn->c_version < RDS_PROTOCOL(3, 1)) { printk(KERN_NOTICE "RDS/IB: Connection to %pI4 version %u.%u failed," " no longer supported\n", &conn->c_faddr, diff --git a/net/rds/loop.c b/net/rds/loop.c index 6b12b68541ae..814173b466d9 100644 --- a/net/rds/loop.c +++ b/net/rds/loop.c @@ -95,8 +95,9 @@ out: */ static void rds_loop_inc_free(struct rds_incoming *inc) { - struct rds_message *rm = container_of(inc, struct rds_message, m_inc); - rds_message_put(rm); + struct rds_message *rm = container_of(inc, struct rds_message, m_inc); + + rds_message_put(rm); } /* we need to at least give the thread something to succeed */ diff --git a/net/rds/sysctl.c b/net/rds/sysctl.c index c173f69e1479..e381bbcd9cc1 100644 --- a/net/rds/sysctl.c +++ b/net/rds/sysctl.c @@ -102,7 +102,8 @@ int rds_sysctl_init(void) rds_sysctl_reconnect_min = msecs_to_jiffies(1); rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min; - rds_sysctl_reg_table = register_net_sysctl(&init_net,"net/rds", rds_sysctl_rds_table); + rds_sysctl_reg_table = + register_net_sysctl(&init_net, "net/rds", rds_sysctl_rds_table); if (!rds_sysctl_reg_table) return -ENOMEM; return 0; diff --git a/net/rds/tcp.h b/net/rds/tcp.h index ec0602b0dc24..7940babf6c71 100644 --- a/net/rds/tcp.h +++ b/net/rds/tcp.h @@ -83,7 +83,7 @@ int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iov_iter *to); void rds_tcp_xmit_prepare(struct rds_connection *conn); void rds_tcp_xmit_complete(struct rds_connection *conn); int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm, - unsigned int hdr_off, unsigned int sg, unsigned int off); + unsigned int hdr_off, unsigned int sg, unsigned int off); void rds_tcp_write_space(struct sock *sk); /* tcp_stats.c */ diff --git a/net/rds/tcp_connect.c b/net/rds/tcp_connect.c index fba13d0305fb..f6e95d60db54 100644 --- a/net/rds/tcp_connect.c +++ b/net/rds/tcp_connect.c @@ -54,19 +54,19 @@ void rds_tcp_state_change(struct sock *sk) rdsdebug("sock %p state_change to %d\n", tc->t_sock, sk->sk_state); - switch(sk->sk_state) { - /* ignore connecting sockets as they make progress */ - case TCP_SYN_SENT: - case TCP_SYN_RECV: - break; - case TCP_ESTABLISHED: - rds_connect_path_complete(conn, RDS_CONN_CONNECTING); - break; - case TCP_CLOSE_WAIT: - case TCP_CLOSE: - rds_conn_drop(conn); - default: - break; + switch (sk->sk_state) { + /* ignore connecting sockets as they make progress */ + case TCP_SYN_SENT: + case TCP_SYN_RECV: + break; + case TCP_ESTABLISHED: + rds_connect_path_complete(conn, RDS_CONN_CONNECTING); + break; + case TCP_CLOSE_WAIT: + case TCP_CLOSE: + rds_conn_drop(conn); + default: + break; } out: read_unlock_bh(&sk->sk_callback_lock); diff --git a/net/rds/tcp_recv.c b/net/rds/tcp_recv.c index c3196f9d070a..6e6a7111a034 100644 --- a/net/rds/tcp_recv.c +++ b/net/rds/tcp_recv.c @@ -171,7 +171,7 @@ static int rds_tcp_data_recv(read_descriptor_t *desc, struct sk_buff *skb, while (left) { if (!tinc) { tinc = kmem_cache_alloc(rds_tcp_incoming_slab, - arg->gfp); + arg->gfp); if (!tinc) { desc->error = -ENOMEM; goto out; diff --git a/net/rds/tcp_send.c b/net/rds/tcp_send.c index 22d0f2020a79..618be69c9c3b 100644 --- a/net/rds/tcp_send.c +++ b/net/rds/tcp_send.c @@ -66,19 +66,19 @@ void rds_tcp_xmit_complete(struct rds_connection *conn) static int rds_tcp_sendmsg(struct socket *sock, void *data, unsigned int len) { struct kvec vec = { - .iov_base = data, - .iov_len = len, + .iov_base = data, + .iov_len = len, + }; + struct msghdr msg = { + .msg_flags = MSG_DONTWAIT | MSG_NOSIGNAL, }; - struct msghdr msg = { - .msg_flags = MSG_DONTWAIT | MSG_NOSIGNAL, - }; return kernel_sendmsg(sock, &msg, &vec, 1, vec.iov_len); } /* the core send_sem serializes this with other xmit and shutdown */ int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm, - unsigned int hdr_off, unsigned int sg, unsigned int off) + unsigned int hdr_off, unsigned int sg, unsigned int off) { struct rds_tcp_connection *tc = conn->c_transport_data; int done = 0; @@ -196,7 +196,7 @@ void rds_tcp_write_space(struct sock *sk) tc->t_last_seen_una = rds_tcp_snd_una(tc); rds_send_drop_acked(conn, rds_tcp_snd_una(tc), rds_tcp_is_acked); - if ((atomic_read(&sk->sk_wmem_alloc) << 1) <= sk->sk_sndbuf) + if ((atomic_read(&sk->sk_wmem_alloc) << 1) <= sk->sk_sndbuf) queue_delayed_work(rds_wq, &conn->c_send_w, 0); out: diff --git a/net/rds/transport.c b/net/rds/transport.c index f3afd1d60d3c..2ffd3e30c643 100644 --- a/net/rds/transport.c +++ b/net/rds/transport.c @@ -140,8 +140,7 @@ unsigned int rds_trans_stats_info_copy(struct rds_info_iterator *iter, rds_info_iter_unmap(iter); down_read(&rds_trans_sem); - for (i = 0; i < RDS_TRANS_COUNT; i++) - { + for (i = 0; i < RDS_TRANS_COUNT; i++) { trans = transports[i]; if (!trans || !trans->stats_info_copy) continue; -- cgit v1.2.3 From e6bd89232b4a4c9282da1ac8bdd798c2a30d9a46 Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Sun, 19 Jun 2016 15:18:11 +0300 Subject: qed: Correct default vlan behavior When no vlan filter is configured, firmware has a configurable default on whether to pass only untagged packets or all packets regardless of their tagging. Driver currently doesn't set this field in the necessary ramrod, causing the default to always be 'receive all'. Signed-off-by: Yuval Mintz Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_l2.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/qlogic/qed/qed_l2.c b/drivers/net/ethernet/qlogic/qed/qed_l2.c index 8fba87dd48af..7c199a94cbfc 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_l2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_l2.c @@ -72,6 +72,7 @@ int qed_sp_eth_vport_start(struct qed_hwfn *p_hwfn, p_ramrod->mtu = cpu_to_le16(p_params->mtu); p_ramrod->inner_vlan_removal_en = p_params->remove_inner_vlan; p_ramrod->drop_ttl0_en = p_params->drop_ttl0; + p_ramrod->untagged = p_params->only_untagged; SET_FIELD(rx_mode, ETH_VPORT_RX_MODE_UCAST_DROP_ALL, 1); SET_FIELD(rx_mode, ETH_VPORT_RX_MODE_MCAST_DROP_ALL, 1); -- cgit v1.2.3 From 326439883e17fca029f4ed05307480bdb6369877 Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Sun, 19 Jun 2016 15:18:12 +0300 Subject: qed: Prevent VF from Tx-switching 'promisc' Internal loopback in driver is based on two things - first is the willingness of transmitter to use it [in case of VFs, this can be forced based on VEPA/VEB] and secondly on another vport classification configuration which should match the packet's destination. Current code allows non-linux VFs to configure a 'promisc' mode on Tx, meaning all traffic sent by VF would be loopbacked internally by firmware; This isn't considered a valid mode and as such should be prevented by PF. Signed-off-by: Yuval Mintz Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_l2.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qed/qed_l2.c b/drivers/net/ethernet/qlogic/qed/qed_l2.c index 7c199a94cbfc..7e7ae83453d5 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_l2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_l2.c @@ -248,10 +248,6 @@ qed_sp_update_accept_mode(struct qed_hwfn *p_hwfn, SET_FIELD(state, ETH_VPORT_TX_MODE_UCAST_DROP_ALL, !!(accept_filter & QED_ACCEPT_NONE)); - SET_FIELD(state, ETH_VPORT_TX_MODE_UCAST_ACCEPT_ALL, - (!!(accept_filter & QED_ACCEPT_UCAST_MATCHED) && - !!(accept_filter & QED_ACCEPT_UCAST_UNMATCHED))); - SET_FIELD(state, ETH_VPORT_TX_MODE_MCAST_DROP_ALL, !!(accept_filter & QED_ACCEPT_NONE)); -- cgit v1.2.3 From a0d26d5a4fc8e13993279f788deeb08069e73b69 Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Sun, 19 Jun 2016 15:18:13 +0300 Subject: qed*: Don't reset statistics on inner reload Several user APIs can cause driver to perform an inner-reload. Currently, doing this would cause the HW/FW statistics of the adapter to reset, which isn't the expected behavior [statistics should only reset on explicit unloads]. Signed-off-by: Yuval Mintz Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_l2.c | 3 ++- drivers/net/ethernet/qlogic/qede/qede_main.c | 7 ++++--- include/linux/qed/qed_eth_if.h | 1 + 3 files changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qed/qed_l2.c b/drivers/net/ethernet/qlogic/qed/qed_l2.c index 7e7ae83453d5..aada4c7e095f 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_l2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_l2.c @@ -1745,7 +1745,8 @@ static int qed_start_vport(struct qed_dev *cdev, start.vport_id, start.mtu); } - qed_reset_vport_stats(cdev); + if (params->clear_stats) + qed_reset_vport_stats(cdev); return 0; } diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c index 5733d1888223..f8e11f953acb 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_main.c +++ b/drivers/net/ethernet/qlogic/qede/qede_main.c @@ -3231,7 +3231,7 @@ static int qede_stop_queues(struct qede_dev *edev) return rc; } -static int qede_start_queues(struct qede_dev *edev) +static int qede_start_queues(struct qede_dev *edev, bool clear_stats) { int rc, tc, i; int vlan_removal_en = 1; @@ -3462,6 +3462,7 @@ out: enum qede_load_mode { QEDE_LOAD_NORMAL, + QEDE_LOAD_RELOAD, }; static int qede_load(struct qede_dev *edev, enum qede_load_mode mode) @@ -3500,7 +3501,7 @@ static int qede_load(struct qede_dev *edev, enum qede_load_mode mode) goto err3; DP_INFO(edev, "Setup IRQs succeeded\n"); - rc = qede_start_queues(edev); + rc = qede_start_queues(edev, mode != QEDE_LOAD_RELOAD); if (rc) goto err4; DP_INFO(edev, "Start VPORT, RXQ and TXQ succeeded\n"); @@ -3555,7 +3556,7 @@ void qede_reload(struct qede_dev *edev, if (func) func(edev, args); - qede_load(edev, QEDE_LOAD_NORMAL); + qede_load(edev, QEDE_LOAD_RELOAD); mutex_lock(&edev->qede_lock); qede_config_rx_mode(edev->ndev); diff --git a/include/linux/qed/qed_eth_if.h b/include/linux/qed/qed_eth_if.h index 6ae8cb4a61d3..6c876a63558d 100644 --- a/include/linux/qed/qed_eth_if.h +++ b/include/linux/qed/qed_eth_if.h @@ -49,6 +49,7 @@ struct qed_start_vport_params { bool drop_ttl0; u8 vport_id; u16 mtu; + bool clear_stats; }; struct qed_stop_rxq_params { -- cgit v1.2.3 From db511c37d4eb2b4e7312791eb8f9b34ed867445e Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Sun, 19 Jun 2016 15:18:14 +0300 Subject: qed: Fix returning unlimited SPQ entries Driver has 2 sets of entries for handling ramrod configurations toward firmware - a regular pre-allocated set of entires and a possible 'unlimited' list of additional pending entries. In most scenarios the 'unlimited' list would not be used, but when it does the handling of the ramrod completion doesn't properly handle the release of the entry. Signed-off-by: Yuval Mintz Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_spq.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qed/qed_spq.c b/drivers/net/ethernet/qlogic/qed/qed_spq.c index acac6626a1b2..67d9893774d8 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_spq.c +++ b/drivers/net/ethernet/qlogic/qed/qed_spq.c @@ -614,7 +614,9 @@ qed_spq_add_entry(struct qed_hwfn *p_hwfn, *p_en2 = *p_ent; - kfree(p_ent); + /* EBLOCK responsible to free the allocated p_ent */ + if (p_ent->comp_mode != QED_SPQ_MODE_EBLOCK) + kfree(p_ent); p_ent = p_en2; } @@ -749,6 +751,15 @@ int qed_spq_post(struct qed_hwfn *p_hwfn, * Thus, after gaining the answer perform the cleanup here. */ rc = qed_spq_block(p_hwfn, p_ent, fw_return_code); + + if (p_ent->queue == &p_spq->unlimited_pending) { + /* This is an allocated p_ent which does not need to + * return to pool. + */ + kfree(p_ent); + return rc; + } + if (rc) goto spq_post_fail2; @@ -844,8 +855,12 @@ int qed_spq_completion(struct qed_hwfn *p_hwfn, found->comp_cb.function(p_hwfn, found->comp_cb.cookie, p_data, fw_return_code); - if (found->comp_mode != QED_SPQ_MODE_EBLOCK) - /* EBLOCK is responsible for freeing its own entry */ + if ((found->comp_mode != QED_SPQ_MODE_EBLOCK) || + (found->queue == &p_spq->unlimited_pending)) + /* EBLOCK is responsible for returning its own entry into the + * free list, unless it originally added the entry into the + * unlimited pending list. + */ qed_spq_return_entry(p_hwfn, found); /* Attempt to post pending requests */ -- cgit v1.2.3 From b639f197210d37905a6018ae4297659eb3f48f8f Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Sun, 19 Jun 2016 15:18:15 +0300 Subject: qed: Add missing port-mode The 'MODULE_FIBER' value replaced several other FIBER values in newer management firmware images, so existing code would fail to properly reflect its mode. Signed-off-by: Yuval Mintz Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_hsi.h | 1 + drivers/net/ethernet/qlogic/qed/qed_main.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/net/ethernet/qlogic/qed/qed_hsi.h b/drivers/net/ethernet/qlogic/qed/qed_hsi.h index 9afc15fdbb02..e29ed5a69566 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_hsi.h +++ b/drivers/net/ethernet/qlogic/qed/qed_hsi.h @@ -3700,6 +3700,7 @@ struct public_port { #define MEDIA_DA_TWINAX 0x3 #define MEDIA_BASE_T 0x4 #define MEDIA_SFP_1G_FIBER 0x5 +#define MEDIA_MODULE_FIBER 0x6 #define MEDIA_KR 0xf0 #define MEDIA_NOT_PRESENT 0xff diff --git a/drivers/net/ethernet/qlogic/qed/qed_main.c b/drivers/net/ethernet/qlogic/qed/qed_main.c index 61cc6869fa65..c7e01b303540 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_main.c +++ b/drivers/net/ethernet/qlogic/qed/qed_main.c @@ -1085,6 +1085,7 @@ static int qed_get_port_type(u32 media_type) case MEDIA_SFPP_10G_FIBER: case MEDIA_SFP_1G_FIBER: case MEDIA_XFP_FIBER: + case MEDIA_MODULE_FIBER: case MEDIA_KR: port_type = PORT_FIBRE; break; -- cgit v1.2.3 From 427460c83cdf55069eee49799a0caef7dde8df69 Mon Sep 17 00:00:00 2001 From: Thor Thayer Date: Thu, 16 Jun 2016 11:10:19 -0500 Subject: can: c_can: Update D_CAN TX and RX functions to 32 bit - fix Altera Cyclone access When testing CAN write floods on Altera's CycloneV, the first 2 bytes are sometimes 0x00, 0x00 or corrupted instead of the values sent. Also observed bytes 4 & 5 were corrupted in some cases. The D_CAN Data registers are 32 bits and changing from 16 bit writes to 32 bit writes fixes the problem. Testing performed on Altera CycloneV (D_CAN). Requesting tests on other C_CAN & D_CAN platforms. Reported-by: Richard Andrysek Signed-off-by: Thor Thayer Cc: Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 38 +++++++++++++++++++++++++++++++------- 1 file changed, 31 insertions(+), 7 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index f91b094288da..e3dccd3200d5 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -332,9 +332,23 @@ static void c_can_setup_tx_object(struct net_device *dev, int iface, priv->write_reg(priv, C_CAN_IFACE(MSGCTRL_REG, iface), ctrl); - for (i = 0; i < frame->can_dlc; i += 2) { - priv->write_reg(priv, C_CAN_IFACE(DATA1_REG, iface) + i / 2, - frame->data[i] | (frame->data[i + 1] << 8)); + if (priv->type == BOSCH_D_CAN) { + u32 data = 0, dreg = C_CAN_IFACE(DATA1_REG, iface); + + for (i = 0; i < frame->can_dlc; i += 4, dreg += 2) { + data = (u32)frame->data[i]; + data |= (u32)frame->data[i + 1] << 8; + data |= (u32)frame->data[i + 2] << 16; + data |= (u32)frame->data[i + 3] << 24; + priv->write_reg32(priv, dreg, data); + } + } else { + for (i = 0; i < frame->can_dlc; i += 2) { + priv->write_reg(priv, + C_CAN_IFACE(DATA1_REG, iface) + i / 2, + frame->data[i] | + (frame->data[i + 1] << 8)); + } } } @@ -402,10 +416,20 @@ static int c_can_read_msg_object(struct net_device *dev, int iface, u32 ctrl) } else { int i, dreg = C_CAN_IFACE(DATA1_REG, iface); - for (i = 0; i < frame->can_dlc; i += 2, dreg ++) { - data = priv->read_reg(priv, dreg); - frame->data[i] = data; - frame->data[i + 1] = data >> 8; + if (priv->type == BOSCH_D_CAN) { + for (i = 0; i < frame->can_dlc; i += 4, dreg += 2) { + data = priv->read_reg32(priv, dreg); + frame->data[i] = data; + frame->data[i + 1] = data >> 8; + frame->data[i + 2] = data >> 16; + frame->data[i + 3] = data >> 24; + } + } else { + for (i = 0; i < frame->can_dlc; i += 2, dreg++) { + data = priv->read_reg(priv, dreg); + frame->data[i] = data; + frame->data[i + 1] = data >> 8; + } } } -- cgit v1.2.3 From 43200a4480cbbe660309621817f54cbb93907108 Mon Sep 17 00:00:00 2001 From: Wolfgang Grandegger Date: Mon, 13 Jun 2016 15:44:19 +0200 Subject: can: at91_can: RX queue could get stuck at high bus load At high bus load it could happen that "at91_poll()" enters with all RX message boxes filled up. If then at the end the "quota" is exceeded as well, "rx_next" will not be reset to the first RX mailbox and hence the interrupts remain disabled. Signed-off-by: Wolfgang Grandegger Tested-by: Amr Bekhit Cc: Signed-off-by: Marc Kleine-Budde --- drivers/net/can/at91_can.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index 8b3275d7792a..8f5e93cb7975 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -712,9 +712,10 @@ static int at91_poll_rx(struct net_device *dev, int quota) /* upper group completed, look again in lower */ if (priv->rx_next > get_mb_rx_low_last(priv) && - quota > 0 && mb > get_mb_rx_last(priv)) { + mb > get_mb_rx_last(priv)) { priv->rx_next = get_mb_rx_first(priv); - goto again; + if (quota > 0) + goto again; } return received; -- cgit v1.2.3 From f155d9c0a138463c3c9380d35e54e433c1477336 Mon Sep 17 00:00:00 2001 From: Maximilian Schneider Date: Wed, 8 Jun 2016 18:00:26 +0000 Subject: can: gs_usb: Add Basic support for the bytewerk.org candleLight interface This patchs adds basic support for the bytewerk.org candleLight interface, a open hardware (CERN OHL) USB CAN adapter. Signed-off-by: Hubert Denkmair Signed-off-by: Maximilian Schneider Signed-off-by: Marc Kleine-Budde --- drivers/net/can/usb/Kconfig | 3 ++- drivers/net/can/usb/gs_usb.c | 14 +++++++++++--- 2 files changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/net/can/usb/Kconfig b/drivers/net/can/usb/Kconfig index bcb272f6c68a..2ff0df32b3d1 100644 --- a/drivers/net/can/usb/Kconfig +++ b/drivers/net/can/usb/Kconfig @@ -16,7 +16,8 @@ config CAN_ESD_USB2 config CAN_GS_USB tristate "Geschwister Schneider UG interfaces" ---help--- - This driver supports the Geschwister Schneider USB/CAN devices. + This driver supports the Geschwister Schneider and bytewerk.org + candleLight USB CAN interfaces USB/CAN devices If unsure choose N, choose Y for built in support, M to compile as module (module will be named: gs_usb). diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c index 1556d4286235..acb0c8490673 100644 --- a/drivers/net/can/usb/gs_usb.c +++ b/drivers/net/can/usb/gs_usb.c @@ -1,7 +1,9 @@ -/* CAN driver for Geschwister Schneider USB/CAN devices. +/* CAN driver for Geschwister Schneider USB/CAN devices + * and bytewerk.org candleLight USB CAN interfaces. * - * Copyright (C) 2013 Geschwister Schneider Technologie-, + * Copyright (C) 2013-2016 Geschwister Schneider Technologie-, * Entwicklungs- und Vertriebs UG (Haftungsbeschränkt). + * Copyright (C) 2016 Hubert Denkmair * * Many thanks to all socketcan devs! * @@ -29,6 +31,9 @@ #define USB_GSUSB_1_VENDOR_ID 0x1d50 #define USB_GSUSB_1_PRODUCT_ID 0x606f +#define USB_CANDLELIGHT_VENDOR_ID 0x1209 +#define USB_CANDLELIGHT_PRODUCT_ID 0x2323 + #define GSUSB_ENDPOINT_IN 1 #define GSUSB_ENDPOINT_OUT 2 @@ -952,6 +957,8 @@ static void gs_usb_disconnect(struct usb_interface *intf) static const struct usb_device_id gs_usb_table[] = { { USB_DEVICE_INTERFACE_NUMBER(USB_GSUSB_1_VENDOR_ID, USB_GSUSB_1_PRODUCT_ID, 0) }, + { USB_DEVICE_INTERFACE_NUMBER(USB_CANDLELIGHT_VENDOR_ID, + USB_CANDLELIGHT_PRODUCT_ID, 0) }, {} /* Terminating entry */ }; @@ -969,5 +976,6 @@ module_usb_driver(gs_usb_driver); MODULE_AUTHOR("Maximilian Schneider "); MODULE_DESCRIPTION( "Socket CAN device driver for Geschwister Schneider Technologie-, " -"Entwicklungs- und Vertriebs UG. USB2.0 to CAN interfaces."); +"Entwicklungs- und Vertriebs UG. USB2.0 to CAN interfaces\n" +"and bytewerk.org candleLight USB CAN interfaces."); MODULE_LICENSE("GPL v2"); -- cgit v1.2.3 From 274f5b041d3c9c0974a7dd1f66b67c33bb5b0f42 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 6 Jun 2016 18:55:57 -0400 Subject: dcache_{readdir,dir_lseek}(): don't bother with nested ->d_lock Make sure that directory is locked shared in dcache_dir_lseek(); for dcache_readdir() it's already tru, and that's enough to make simple_positive() stable. Signed-off-by: Al Viro --- fs/libfs.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/fs/libfs.c b/fs/libfs.c index cedeacbae303..f56acb1e5fbc 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -103,6 +103,7 @@ loff_t dcache_dir_lseek(struct file *file, loff_t offset, int whence) struct dentry *cursor = file->private_data; loff_t n = file->f_pos - 2; + inode_lock_shared(dentry->d_inode); spin_lock(&dentry->d_lock); /* d_lock not required for cursor */ list_del(&cursor->d_child); @@ -110,14 +111,13 @@ loff_t dcache_dir_lseek(struct file *file, loff_t offset, int whence) while (n && p != &dentry->d_subdirs) { struct dentry *next; next = list_entry(p, struct dentry, d_child); - spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED); if (simple_positive(next)) n--; - spin_unlock(&next->d_lock); p = p->next; } list_add_tail(&cursor->d_child, p); spin_unlock(&dentry->d_lock); + inode_unlock_shared(dentry->d_inode); } } return offset; @@ -150,22 +150,16 @@ int dcache_readdir(struct file *file, struct dir_context *ctx) for (p = q->next; p != &dentry->d_subdirs; p = p->next) { struct dentry *next = list_entry(p, struct dentry, d_child); - spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED); - if (!simple_positive(next)) { - spin_unlock(&next->d_lock); + if (!simple_positive(next)) continue; - } - spin_unlock(&next->d_lock); spin_unlock(&dentry->d_lock); if (!dir_emit(ctx, next->d_name.name, next->d_name.len, d_inode(next)->i_ino, dt_type(d_inode(next)))) return 0; spin_lock(&dentry->d_lock); - spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED); /* next is still alive */ list_move(q, p); - spin_unlock(&next->d_lock); p = q; ctx->pos++; } -- cgit v1.2.3 From 4f42c1b5b9c27b6228e6b9c57eee4beb3118b6b0 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 6 Jun 2016 19:37:13 -0400 Subject: libfs.c: new helper - next_positive() Return nth positive child after given or NULL if there's less than n left. dcache_readdir() and dcache_dir_lseek() switched to it. Signed-off-by: Al Viro --- fs/libfs.c | 77 ++++++++++++++++++++++++++++++++++++++------------------------ 1 file changed, 47 insertions(+), 30 deletions(-) diff --git a/fs/libfs.c b/fs/libfs.c index f56acb1e5fbc..b05b74ae3f16 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -84,6 +84,39 @@ int dcache_dir_close(struct inode *inode, struct file *file) } EXPORT_SYMBOL(dcache_dir_close); +/* parent is locked at least shared */ +static struct dentry *next_positive(struct dentry *parent, + struct list_head *from, + int count) +{ + struct dentry *res = NULL; + struct list_head *p; + + spin_lock(&parent->d_lock); + for (p = from->next; p != &parent->d_subdirs; p = p->next) { + struct dentry *d = list_entry(p, struct dentry, d_child); + if (simple_positive(d) && !--count) { + res = d; + break; + } + } + spin_unlock(&parent->d_lock); + return res; +} + +static void move_cursor(struct dentry *cursor, struct list_head *after) +{ + struct dentry *parent = cursor->d_parent; + + spin_lock(&parent->d_lock); + __list_del(cursor->d_child.prev, cursor->d_child.next); + if (after) + list_add(&cursor->d_child, after); + else + list_add_tail(&cursor->d_child, &parent->d_subdirs); + spin_unlock(&parent->d_lock); +} + loff_t dcache_dir_lseek(struct file *file, loff_t offset, int whence) { struct dentry *dentry = file->f_path.dentry; @@ -99,24 +132,13 @@ loff_t dcache_dir_lseek(struct file *file, loff_t offset, int whence) if (offset != file->f_pos) { file->f_pos = offset; if (file->f_pos >= 2) { - struct list_head *p; struct dentry *cursor = file->private_data; + struct dentry *to; loff_t n = file->f_pos - 2; inode_lock_shared(dentry->d_inode); - spin_lock(&dentry->d_lock); - /* d_lock not required for cursor */ - list_del(&cursor->d_child); - p = dentry->d_subdirs.next; - while (n && p != &dentry->d_subdirs) { - struct dentry *next; - next = list_entry(p, struct dentry, d_child); - if (simple_positive(next)) - n--; - p = p->next; - } - list_add_tail(&cursor->d_child, p); - spin_unlock(&dentry->d_lock); + to = next_positive(dentry, &dentry->d_subdirs, n); + move_cursor(cursor, to ? &to->d_child : NULL); inode_unlock_shared(dentry->d_inode); } } @@ -140,30 +162,25 @@ int dcache_readdir(struct file *file, struct dir_context *ctx) { struct dentry *dentry = file->f_path.dentry; struct dentry *cursor = file->private_data; - struct list_head *p, *q = &cursor->d_child; + struct list_head *p = &cursor->d_child; + struct dentry *next; + bool moved = false; if (!dir_emit_dots(file, ctx)) return 0; - spin_lock(&dentry->d_lock); - if (ctx->pos == 2) - list_move(q, &dentry->d_subdirs); - for (p = q->next; p != &dentry->d_subdirs; p = p->next) { - struct dentry *next = list_entry(p, struct dentry, d_child); - if (!simple_positive(next)) - continue; - - spin_unlock(&dentry->d_lock); + if (ctx->pos == 2) + p = &dentry->d_subdirs; + while ((next = next_positive(dentry, p, 1)) != NULL) { if (!dir_emit(ctx, next->d_name.name, next->d_name.len, d_inode(next)->i_ino, dt_type(d_inode(next)))) - return 0; - spin_lock(&dentry->d_lock); - /* next is still alive */ - list_move(q, p); - p = q; + break; + moved = true; + p = &next->d_child; ctx->pos++; } - spin_unlock(&dentry->d_lock); + if (moved) + move_cursor(cursor, p); return 0; } EXPORT_SYMBOL(dcache_readdir); -- cgit v1.2.3 From ebaaa80e8f20ff2cbbccd6823f73a99565487502 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 6 Jun 2016 20:55:34 -0400 Subject: lockless next_positive() Signed-off-by: Al Viro --- fs/libfs.c | 32 +++++++++++++++++++++++++++----- 1 file changed, 27 insertions(+), 5 deletions(-) diff --git a/fs/libfs.c b/fs/libfs.c index b05b74ae3f16..74dc8b9e7f53 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -89,31 +89,53 @@ static struct dentry *next_positive(struct dentry *parent, struct list_head *from, int count) { - struct dentry *res = NULL; + unsigned *seq = &parent->d_inode->i_dir_seq, n; + struct dentry *res; struct list_head *p; + bool skipped; + int i; - spin_lock(&parent->d_lock); +retry: + i = count; + skipped = false; + n = smp_load_acquire(seq) & ~1; + res = NULL; + rcu_read_lock(); for (p = from->next; p != &parent->d_subdirs; p = p->next) { struct dentry *d = list_entry(p, struct dentry, d_child); - if (simple_positive(d) && !--count) { + if (!simple_positive(d)) { + skipped = true; + } else if (!--i) { res = d; break; } } - spin_unlock(&parent->d_lock); + rcu_read_unlock(); + if (skipped) { + smp_rmb(); + if (unlikely(*seq != n)) + goto retry; + } return res; } static void move_cursor(struct dentry *cursor, struct list_head *after) { struct dentry *parent = cursor->d_parent; - + unsigned n, *seq = &parent->d_inode->i_dir_seq; spin_lock(&parent->d_lock); + for (;;) { + n = *seq; + if (!(n & 1) && cmpxchg(seq, n, n + 1) == n) + break; + cpu_relax(); + } __list_del(cursor->d_child.prev, cursor->d_child.next); if (after) list_add(&cursor->d_child, after); else list_add_tail(&cursor->d_child, &parent->d_subdirs); + smp_store_release(seq, n + 2); spin_unlock(&parent->d_lock); } -- cgit v1.2.3 From a5e9b85a6540df6c4074d3a56674f6fb6c5fc830 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 17 Jun 2016 17:24:23 +0000 Subject: clk: Fix return value check in oxnas_stdclk_probe() In case of error, the function syscon_node_to_regmap() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun Acked-by: Neil Armstrong Fixes: 0bbd72b4c64f ("clk: Add Oxford Semiconductor OXNAS Standard Clocks") Signed-off-by: Stephen Boyd --- drivers/clk/clk-oxnas.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/clk/clk-oxnas.c b/drivers/clk/clk-oxnas.c index efba7d4dbcfc..79bcb2e42060 100644 --- a/drivers/clk/clk-oxnas.c +++ b/drivers/clk/clk-oxnas.c @@ -144,9 +144,9 @@ static int oxnas_stdclk_probe(struct platform_device *pdev) return -ENOMEM; regmap = syscon_node_to_regmap(of_get_parent(np)); - if (!regmap) { + if (IS_ERR(regmap)) { dev_err(&pdev->dev, "failed to have parent regmap\n"); - return -EINVAL; + return PTR_ERR(regmap); } for (i = 0; i < ARRAY_SIZE(clk_oxnas_init); i++) { -- cgit v1.2.3 From 04e59a0211ff012ba60c00baca673482570784e9 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 18 Jun 2016 11:31:33 +0200 Subject: phy-sun4i-usb: Fix irq free conditions to match request conditions commit 5cf700ac9d50 ("phy: phy-sun4i-usb: Fix optional gpios failing probe") changed the condition under which irqs are requested, but omitted matching changes to sun4i_usb_phy_remove(). This commit fixes this. Fixes: 5cf700ac9d50 ("phy: phy-sun4i-usb: Fix optional gpios failing probe") Signed-off-by: Hans de Goede Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-sun4i-usb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c index 739029430dda..de3101fbbf40 100644 --- a/drivers/phy/phy-sun4i-usb.c +++ b/drivers/phy/phy-sun4i-usb.c @@ -514,9 +514,9 @@ static int sun4i_usb_phy_remove(struct platform_device *pdev) if (data->vbus_power_nb_registered) power_supply_unreg_notifier(&data->vbus_power_nb); - if (data->id_det_irq >= 0) + if (data->id_det_irq > 0) devm_free_irq(dev, data->id_det_irq, data); - if (data->vbus_det_irq >= 0) + if (data->vbus_det_irq > 0) devm_free_irq(dev, data->vbus_det_irq, data); cancel_delayed_work_sync(&data->detect); -- cgit v1.2.3 From ba562d5e54fd3136bfea0457add3675850247774 Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Wed, 1 Jun 2016 22:21:53 +0300 Subject: pinctrl: imx: Do not treat a PIN without MUX register as an error Some PINs do not have a MUX register, it is not an error. It is necessary to allow the continuation of the PINs configuration, otherwise the whole PIN-group will be configured incorrectly. Cc: stable@vger.kernel.org Signed-off-by: Alexander Shiyan Signed-off-by: Linus Walleij --- drivers/pinctrl/freescale/pinctrl-imx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c index 47ccfcc8a647..eccb47480e1d 100644 --- a/drivers/pinctrl/freescale/pinctrl-imx.c +++ b/drivers/pinctrl/freescale/pinctrl-imx.c @@ -209,9 +209,9 @@ static int imx_pmx_set(struct pinctrl_dev *pctldev, unsigned selector, pin_reg = &info->pin_regs[pin_id]; if (pin_reg->mux_reg == -1) { - dev_err(ipctl->dev, "Pin(%s) does not support mux function\n", + dev_dbg(ipctl->dev, "Pin(%s) does not support mux function\n", info->pins[pin_id].name); - return -EINVAL; + continue; } if (info->flags & SHARE_MUX_CONF_REG) { -- cgit v1.2.3 From 0ac3c0a4025f41748a083bdd4970cb3ede802b15 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Tue, 31 May 2016 14:17:06 -0700 Subject: pinctrl: single: Fix missing flush of posted write for a wakeirq With many repeated suspend resume cycles, the pin specific wakeirq may not always work on omaps. This is because the write to enable the pin interrupt may not have reached the device over the interconnect before suspend happens. Let's fix the issue with a flush of posted write with a readback. Cc: stable@vger.kernel.org Reported-by: Nishanth Menon Signed-off-by: Tony Lindgren Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-single.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index cf9bafa10acf..bfdf720db270 100644 --- a/drivers/pinctrl/pinctrl-single.c +++ b/drivers/pinctrl/pinctrl-single.c @@ -1580,6 +1580,9 @@ static inline void pcs_irq_set(struct pcs_soc_data *pcs_soc, else mask &= ~soc_mask; pcs->write(mask, pcswi->reg); + + /* flush posted write */ + mask = pcs->read(pcswi->reg); raw_spin_unlock(&pcs->lock); } -- cgit v1.2.3 From 9ee8ff4867d07a6429991a0b748fa9c1586a7764 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 6 Jun 2016 18:56:27 +0200 Subject: gpio: tegra: Make lockdep class file-scoped Commit b546be0db955 ("gpio: tegra: Get rid of all file scoped global variables") moved all file scoped variables into the driver-private structure to allow potentially multiple instances of the driver. The change also included turning the lockdep class into a driver-private field, which doesn't work and produces error messages such as this: [ 0.142310] BUG: key ffff8000fb3f7ab0 not in .data! Make the lockdep class file-scoped again to fix this issue. Signed-off-by: Thierry Reding Signed-off-by: Linus Walleij --- drivers/gpio/gpio-tegra.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index ec891a27952f..661b0e34e067 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -98,7 +98,6 @@ struct tegra_gpio_info { const struct tegra_gpio_soc_config *soc; struct gpio_chip gc; struct irq_chip ic; - struct lock_class_key lock_class; u32 bank_count; }; @@ -547,6 +546,12 @@ static const struct dev_pm_ops tegra_gpio_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(tegra_gpio_suspend, tegra_gpio_resume) }; +/* + * This lock class tells lockdep that GPIO irqs are in a different category + * than their parents, so it won't report false recursion. + */ +static struct lock_class_key gpio_lock_class; + static int tegra_gpio_probe(struct platform_device *pdev) { const struct tegra_gpio_soc_config *config; @@ -660,7 +665,7 @@ static int tegra_gpio_probe(struct platform_device *pdev) bank = &tgi->bank_info[GPIO_BANK(gpio)]; - irq_set_lockdep_class(irq, &tgi->lock_class); + irq_set_lockdep_class(irq, &gpio_lock_class); irq_set_chip_data(irq, bank); irq_set_chip_and_handler(irq, &tgi->ic, handle_simple_irq); } -- cgit v1.2.3 From 19b5a91764fddcc51b2f8e54a81d4ef231980181 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sat, 4 Jun 2016 14:35:56 +0800 Subject: pinctrl: tegra: Fix build dependency I got below build error: ERROR: "tegra_xusb_padctl_legacy_probe" [drivers/phy/tegra/phy-tegra-xusb.ko] undefined! with below build configuration: CONFIG_ARCH_TEGRA=y CONFIG_PINCTRL_TEGRA_XUSB=y CONFIG_PHY_TEGRA_XUSB=y The problem is below line in drivers/pinctrl/Makefile obj-$(CONFIG_PINCTRL_TEGRA) += tegra/ So even CONFIG_PINCTRL_TEGRA_XUSB=y is set, kbuild still does not compile the code in drivers/pinctrl/tegra folder if !CONFIG_PINCTRL_TEGRA. phy-tegra-xusb.c does not use any symbol from pinctrl-tegra.c, so build pinctrl-tegra.c only when CONFIG_PINCTRL_TEGRA is set. Signed-off-by: Axel Lin Acked-by: Jon Hunter Signed-off-by: Linus Walleij --- drivers/pinctrl/Makefile | 2 +- drivers/pinctrl/tegra/Makefile | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index e4bc1151e04f..42a5c1dddfef 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -23,7 +23,7 @@ obj-$(CONFIG_PINCTRL_PISTACHIO) += pinctrl-pistachio.o obj-$(CONFIG_PINCTRL_ROCKCHIP) += pinctrl-rockchip.o obj-$(CONFIG_PINCTRL_SINGLE) += pinctrl-single.o obj-$(CONFIG_PINCTRL_SIRF) += sirf/ -obj-$(CONFIG_PINCTRL_TEGRA) += tegra/ +obj-$(CONFIG_ARCH_TEGRA) += tegra/ obj-$(CONFIG_PINCTRL_TZ1090) += pinctrl-tz1090.o obj-$(CONFIG_PINCTRL_TZ1090_PDC) += pinctrl-tz1090-pdc.o obj-$(CONFIG_PINCTRL_U300) += pinctrl-u300.o diff --git a/drivers/pinctrl/tegra/Makefile b/drivers/pinctrl/tegra/Makefile index a927379b6794..d9ea2be69cc4 100644 --- a/drivers/pinctrl/tegra/Makefile +++ b/drivers/pinctrl/tegra/Makefile @@ -1,4 +1,4 @@ -obj-y += pinctrl-tegra.o +obj-$(CONFIG_PINCTRL_TEGRA) += pinctrl-tegra.o obj-$(CONFIG_PINCTRL_TEGRA20) += pinctrl-tegra20.o obj-$(CONFIG_PINCTRL_TEGRA30) += pinctrl-tegra30.o obj-$(CONFIG_PINCTRL_TEGRA114) += pinctrl-tegra114.o -- cgit v1.2.3 From 942f64c4c2be19a1b4a0c4295182b42d153899bf Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Mon, 20 Jun 2016 11:53:20 +0300 Subject: team: Fix possible deadlock during team enslave Both dev_uc_sync_multiple() and dev_mc_sync_multiple() require the source device to be locked by netif_addr_lock_bh(), but this is missing in team's enslave function, so add it. This fixes the following lockdep warning: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(_xmit_ETHER/1); local_irq_disable(); lock(&(&mc->mca_lock)->rlock); lock(&team_netdev_addr_lock_key); lock(&(&mc->mca_lock)->rlock); *** DEADLOCK *** Fixes: cb41c997d444 ("team: team should sync the port's uc/mc addrs when add a port") Signed-off-by: Jiri Pirko Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller --- drivers/net/team/team.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index 2ace126533cd..fdee77207323 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -1203,8 +1203,10 @@ static int team_port_add(struct team *team, struct net_device *port_dev) goto err_dev_open; } + netif_addr_lock_bh(dev); dev_uc_sync_multiple(port_dev, dev); dev_mc_sync_multiple(port_dev, dev); + netif_addr_unlock_bh(dev); err = vlan_vids_add_by_dev(port_dev, dev); if (err) { -- cgit v1.2.3 From d19af0a76444fde629667ecb823c0ee28f9f67d8 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Mon, 20 Jun 2016 11:36:28 +0200 Subject: kcm: fix /proc memory leak Every open of /proc/net/kcm leaks 16 bytes of memory as is reported by kmemleak: unreferenced object 0xffff88059c0e3458 (size 192): comm "cat", pid 1401, jiffies 4294935742 (age 310.720s) hex dump (first 32 bytes): 28 45 71 96 05 88 ff ff 00 10 00 00 00 00 00 00 (Eq............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [] kmem_cache_alloc_trace+0x16e/0x230 [] seq_open+0x79/0x1d0 [] kcm_seq_open+0x0/0x30 [kcm] [] seq_open+0x79/0x1d0 [] __seq_open_private+0x2f/0xa0 [] seq_open_net+0x38/0xa0 ... It is caused by a missing free in the ->release path. So fix it by providing seq_release_net as the ->release method. Signed-off-by: Jiri Slaby Fixes: cd6e111bf5 (kcm: Add statistics and proc interfaces) Cc: "David S. Miller" Cc: Tom Herbert Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller --- net/kcm/kcmproc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/kcm/kcmproc.c b/net/kcm/kcmproc.c index 738008726cc6..fda7f4715c58 100644 --- a/net/kcm/kcmproc.c +++ b/net/kcm/kcmproc.c @@ -241,6 +241,7 @@ static const struct file_operations kcm_seq_fops = { .open = kcm_seq_open, .read = seq_read, .llseek = seq_lseek, + .release = seq_release_net, }; static struct kcm_seq_muxinfo kcm_seq_muxinfo = { -- cgit v1.2.3 From 27777daa8b6df0c19aaf591d1536a586b3eb5e36 Mon Sep 17 00:00:00 2001 From: Jon Paul Maloy Date: Mon, 20 Jun 2016 09:20:46 -0400 Subject: tipc: unclone unbundled buffers before forwarding When extracting an individual message from a received "bundle" buffer, we just create a clone of the base buffer, and adjust it to point into the right position of the linearized data area of the latter. This works well for regular message reception, but during periods of extremely high load it may happen that an extracted buffer, e.g, a connection probe, is reversed and forwarded through an external interface while the preceding extracted message is still unhandled. When this happens, the header or data area of the preceding message will be partially overwritten by a MAC header, leading to unpredicatable consequences, such as a link reset. We now fix this by ensuring that the msg_reverse() function never returns a cloned buffer, and that the returned buffer always contains sufficient valid head and tail room to be forwarded. Reported-by: Erik Hugne Acked-by: Ying Xue Signed-off-by: Jon Maloy Signed-off-by: David S. Miller --- net/tipc/msg.c | 6 ++++++ net/tipc/msg.h | 11 ----------- 2 files changed, 6 insertions(+), 11 deletions(-) diff --git a/net/tipc/msg.c b/net/tipc/msg.c index 8740930f0787..17201aa8423d 100644 --- a/net/tipc/msg.c +++ b/net/tipc/msg.c @@ -41,6 +41,8 @@ #include "name_table.h" #define MAX_FORWARD_SIZE 1024 +#define BUF_HEADROOM (LL_MAX_HEADER + 48) +#define BUF_TAILROOM 16 static unsigned int align(unsigned int i) { @@ -505,6 +507,10 @@ bool tipc_msg_reverse(u32 own_node, struct sk_buff **skb, int err) msg_set_hdr_sz(hdr, BASIC_H_SIZE); } + if (skb_cloned(_skb) && + pskb_expand_head(_skb, BUF_HEADROOM, BUF_TAILROOM, GFP_KERNEL)) + goto exit; + /* Now reverse the concerned fields */ msg_set_errcode(hdr, err); msg_set_origport(hdr, msg_destport(&ohdr)); diff --git a/net/tipc/msg.h b/net/tipc/msg.h index 024da8af91f0..7cf52fb39bee 100644 --- a/net/tipc/msg.h +++ b/net/tipc/msg.h @@ -94,17 +94,6 @@ struct plist; #define TIPC_MEDIA_INFO_OFFSET 5 -/** - * TIPC message buffer code - * - * TIPC message buffer headroom reserves space for the worst-case - * link-level device header (in case the message is sent off-node). - * - * Note: Headroom should be a multiple of 4 to ensure the TIPC header fields - * are word aligned for quicker access - */ -#define BUF_HEADROOM (LL_MAX_HEADER + 48) - struct tipc_skb_cb { void *handle; struct sk_buff *tail; -- cgit v1.2.3 From 93c098af09455ea7bdc6f0f6b08f6ac14fa06cf4 Mon Sep 17 00:00:00 2001 From: Kamal Heib Date: Tue, 21 Jun 2016 14:20:02 +0300 Subject: net/mlx4_en: Fix the return value of a failure in VLAN VID add/kill Modify mlx4_en_vlan_rx_[add/kill]_vid to return error value in case of failure. Fixes: 8e586137e6b6 ('net: make vlan ndo_vlan_rx_[add/kill]_vid return error value') Signed-off-by: Kamal Heib Signed-off-by: Tariq Toukan Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index a2c25365a8a3..43f505e2d291 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -406,14 +406,18 @@ static int mlx4_en_vlan_rx_add_vid(struct net_device *dev, mutex_lock(&mdev->state_lock); if (mdev->device_up && priv->port_up) { err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); - if (err) + if (err) { en_err(priv, "Failed configuring VLAN filter\n"); + goto out; + } } - if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx)) - en_dbg(HW, priv, "failed adding vlan %d\n", vid); - mutex_unlock(&mdev->state_lock); + err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx); + if (err) + en_dbg(HW, priv, "Failed adding vlan %d\n", vid); - return 0; +out: + mutex_unlock(&mdev->state_lock); + return err; } static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, @@ -421,7 +425,7 @@ static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, { struct mlx4_en_priv *priv = netdev_priv(dev); struct mlx4_en_dev *mdev = priv->mdev; - int err; + int err = 0; en_dbg(HW, priv, "Killing VID:%d\n", vid); @@ -438,7 +442,7 @@ static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, } mutex_unlock(&mdev->state_lock); - return 0; + return err; } static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) -- cgit v1.2.3 From 9d76931180557270796f9631e2c79b9c7bb3c9fb Mon Sep 17 00:00:00 2001 From: Eran Ben Elisha Date: Tue, 21 Jun 2016 14:20:03 +0300 Subject: net/mlx4_en: Avoid unregister_netdev at shutdown flow This allows a clean shutdown, even if some netdev clients do not release their reference from this netdev. It is enough to release the HW resources only as the kernel is shutting down. Fixes: 2ba5fbd62b25 ('net/mlx4_core: Handle AER flow properly') Signed-off-by: Eran Ben Elisha Signed-off-by: Tariq Toukan Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 17 +++++++++++++++-- drivers/net/ethernet/mellanox/mlx4/main.c | 5 ++++- include/linux/mlx4/device.h | 1 + 3 files changed, 20 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 43f505e2d291..0c0dfd6cdca6 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -2036,11 +2036,20 @@ err: return -ENOMEM; } +static void mlx4_en_shutdown(struct net_device *dev) +{ + rtnl_lock(); + netif_device_detach(dev); + mlx4_en_close(dev); + rtnl_unlock(); +} void mlx4_en_destroy_netdev(struct net_device *dev) { struct mlx4_en_priv *priv = netdev_priv(dev); struct mlx4_en_dev *mdev = priv->mdev; + bool shutdown = mdev->dev->persist->interface_state & + MLX4_INTERFACE_STATE_SHUTDOWN; en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); @@ -2048,7 +2057,10 @@ void mlx4_en_destroy_netdev(struct net_device *dev) if (priv->registered) { devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev, priv->port)); - unregister_netdev(dev); + if (shutdown) + mlx4_en_shutdown(dev); + else + unregister_netdev(dev); } if (priv->allocated) @@ -2073,7 +2085,8 @@ void mlx4_en_destroy_netdev(struct net_device *dev) kfree(priv->tx_ring); kfree(priv->tx_cq); - free_netdev(dev); + if (!shutdown) + free_netdev(dev); } static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index 372ebfa880f5..546fab0ecc3b 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -4135,8 +4135,11 @@ static void mlx4_shutdown(struct pci_dev *pdev) mlx4_info(persist->dev, "mlx4_shutdown was called\n"); mutex_lock(&persist->interface_state_mutex); - if (persist->interface_state & MLX4_INTERFACE_STATE_UP) + if (persist->interface_state & MLX4_INTERFACE_STATE_UP) { + /* Notify mlx4 clients that the kernel is being shut down */ + persist->interface_state |= MLX4_INTERFACE_STATE_SHUTDOWN; mlx4_unload_one(pdev); + } mutex_unlock(&persist->interface_state_mutex); } diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 80dec87a94f8..d46a0e7f144d 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -466,6 +466,7 @@ enum { enum { MLX4_INTERFACE_STATE_UP = 1 << 0, MLX4_INTERFACE_STATE_DELETION = 1 << 1, + MLX4_INTERFACE_STATE_SHUTDOWN = 1 << 2, }; #define MSTR_SM_CHANGE_MASK (MLX4_EQ_PORT_INFO_MSTR_SM_SL_CHANGE_MASK | \ -- cgit v1.2.3 From fefb62455f6becc87d2d8f25ba2df961add5d06c Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 21 Jun 2016 01:52:36 +0300 Subject: MAINTAINERS: belong Documentation/pinctrl.txt properly I'm pretty sure that Documentation/pinctrl.txt would be better maintained by pinctrl subsystem. Signed-off-by: Andy Shevchenko Signed-off-by: Linus Walleij --- MAINTAINERS | 1 + 1 file changed, 1 insertion(+) diff --git a/MAINTAINERS b/MAINTAINERS index e1b090f86e0d..c447bdcc179a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8959,6 +8959,7 @@ L: linux-gpio@vger.kernel.org T: git git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git S: Maintained F: Documentation/devicetree/bindings/pinctrl/ +F: Documentation/pinctrl.txt F: drivers/pinctrl/ F: include/linux/pinctrl/ -- cgit v1.2.3 From bce271f255dae8335dc4d2ee2c4531e09cc67f5a Mon Sep 17 00:00:00 2001 From: Oliver Hartkopp Date: Tue, 21 Jun 2016 12:14:07 +0200 Subject: can: fix handling of unmodifiable configuration options fix With upstream commit bb208f144cf3f59 (can: fix handling of unmodifiable configuration options) a new can_validate() function was introduced. When invoking 'ip link set can0 type can' without any configuration data can_validate() tries to validate the content without taking into account that there's totally no content. This patch adds a check for missing content. Reported-by: ajneu Signed-off-by: Oliver Hartkopp Cc: Signed-off-by: Marc Kleine-Budde --- drivers/net/can/dev.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c index 910c12e2638e..348dd5001fa4 100644 --- a/drivers/net/can/dev.c +++ b/drivers/net/can/dev.c @@ -798,6 +798,9 @@ static int can_validate(struct nlattr *tb[], struct nlattr *data[]) * - control mode with CAN_CTRLMODE_FD set */ + if (!data) + return 0; + if (data[IFLA_CAN_CTRLMODE]) { struct can_ctrlmode *cm = nla_data(data[IFLA_CAN_CTRLMODE]); -- cgit v1.2.3 From 25e1ed6e64f52a692ba3191c4fde650aab3ecc07 Mon Sep 17 00:00:00 2001 From: Oliver Hartkopp Date: Tue, 21 Jun 2016 15:45:47 +0200 Subject: can: fix oops caused by wrong rtnl dellink usage For 'real' hardware CAN devices the netlink interface is used to set CAN specific communication parameters. Real CAN hardware can not be created nor removed with the ip tool ... This patch adds a private dellink function for the CAN device driver interface that does just nothing. It's a follow up to commit 993e6f2fd ("can: fix oops caused by wrong rtnl newlink usage") but for dellink. Reported-by: ajneu Signed-off-by: Oliver Hartkopp Cc: Signed-off-by: Marc Kleine-Budde --- drivers/net/can/dev.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c index 348dd5001fa4..ad535a854e5c 100644 --- a/drivers/net/can/dev.c +++ b/drivers/net/can/dev.c @@ -1011,6 +1011,11 @@ static int can_newlink(struct net *src_net, struct net_device *dev, return -EOPNOTSUPP; } +static void can_dellink(struct net_device *dev, struct list_head *head) +{ + return; +} + static struct rtnl_link_ops can_link_ops __read_mostly = { .kind = "can", .maxtype = IFLA_CAN_MAX, @@ -1019,6 +1024,7 @@ static struct rtnl_link_ops can_link_ops __read_mostly = { .validate = can_validate, .newlink = can_newlink, .changelink = can_changelink, + .dellink = can_dellink, .get_size = can_get_size, .fill_info = can_fill_info, .get_xstats_size = can_get_xstats_size, -- cgit v1.2.3 From b41aa4f8476545e2b663b1549759a8c3a66f47b0 Mon Sep 17 00:00:00 2001 From: Cristina Ciocan Date: Wed, 22 Jun 2016 14:17:19 +0300 Subject: pinctrl: baytrail: Fix mingled clock pins Fix plt clock 3, 4 and 5 pins, which were not in the proper order. Signed-off-by: Cristina Ciocan Acked-by: Mika Westerberg Signed-off-by: Linus Walleij --- drivers/pinctrl/intel/pinctrl-baytrail.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/pinctrl/intel/pinctrl-baytrail.c b/drivers/pinctrl/intel/pinctrl-baytrail.c index 677a811b3a6f..7abfd42e8ffd 100644 --- a/drivers/pinctrl/intel/pinctrl-baytrail.c +++ b/drivers/pinctrl/intel/pinctrl-baytrail.c @@ -401,9 +401,9 @@ static const struct byt_simple_func_mux byt_score_sata_mux[] = { static const unsigned int byt_score_plt_clk0_pins[] = { 96 }; static const unsigned int byt_score_plt_clk1_pins[] = { 97 }; static const unsigned int byt_score_plt_clk2_pins[] = { 98 }; -static const unsigned int byt_score_plt_clk4_pins[] = { 99 }; -static const unsigned int byt_score_plt_clk5_pins[] = { 100 }; -static const unsigned int byt_score_plt_clk3_pins[] = { 101 }; +static const unsigned int byt_score_plt_clk3_pins[] = { 99 }; +static const unsigned int byt_score_plt_clk4_pins[] = { 100 }; +static const unsigned int byt_score_plt_clk5_pins[] = { 101 }; static const struct byt_simple_func_mux byt_score_plt_clk_mux[] = { SIMPLE_FUNC("plt_clk", 1), }; -- cgit v1.2.3 From 71873a9b38d1cc6c93e2962149a7bb7272a7cb66 Mon Sep 17 00:00:00 2001 From: Jimmy Assarsson Date: Thu, 23 Jun 2016 07:57:21 +0200 Subject: can: kvaser_usb: Add support for more Kvaser Leaf v2 devices This patch adds support for Kvaser Leaf Light HS v2 OEM, Mini PCI Express 2xHS and USBcan Light 2xHS. Signed-off-by: Jimmy Assarsson Signed-off-by: Marc Kleine-Budde --- drivers/net/can/usb/Kconfig | 2 ++ drivers/net/can/usb/kvaser_usb.c | 8 +++++++- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/net/can/usb/Kconfig b/drivers/net/can/usb/Kconfig index 2ff0df32b3d1..8483a40e7e9e 100644 --- a/drivers/net/can/usb/Kconfig +++ b/drivers/net/can/usb/Kconfig @@ -47,6 +47,8 @@ config CAN_KVASER_USB - Kvaser USBcan R - Kvaser Leaf Light v2 - Kvaser Mini PCI Express HS + - Kvaser Mini PCI Express 2xHS + - Kvaser USBcan Light 2xHS - Kvaser USBcan II HS/HS - Kvaser USBcan II HS/LS - Kvaser USBcan Rugged ("USBcan Rev B") diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c index 022bfa13ebfa..6f1f3b675ff5 100644 --- a/drivers/net/can/usb/kvaser_usb.c +++ b/drivers/net/can/usb/kvaser_usb.c @@ -59,11 +59,14 @@ #define USB_CAN_R_PRODUCT_ID 39 #define USB_LEAF_LITE_V2_PRODUCT_ID 288 #define USB_MINI_PCIE_HS_PRODUCT_ID 289 +#define USB_LEAF_LIGHT_HS_V2_OEM_PRODUCT_ID 290 +#define USB_USBCAN_LIGHT_2HS_PRODUCT_ID 291 +#define USB_MINI_PCIE_2HS_PRODUCT_ID 292 static inline bool kvaser_is_leaf(const struct usb_device_id *id) { return id->idProduct >= USB_LEAF_DEVEL_PRODUCT_ID && - id->idProduct <= USB_MINI_PCIE_HS_PRODUCT_ID; + id->idProduct <= USB_MINI_PCIE_2HS_PRODUCT_ID; } /* Kvaser USBCan-II devices */ @@ -537,6 +540,9 @@ static const struct usb_device_id kvaser_usb_table[] = { .driver_info = KVASER_HAS_TXRX_ERRORS }, { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LITE_V2_PRODUCT_ID) }, { USB_DEVICE(KVASER_VENDOR_ID, USB_MINI_PCIE_HS_PRODUCT_ID) }, + { USB_DEVICE(KVASER_VENDOR_ID, USB_LEAF_LIGHT_HS_V2_OEM_PRODUCT_ID) }, + { USB_DEVICE(KVASER_VENDOR_ID, USB_USBCAN_LIGHT_2HS_PRODUCT_ID) }, + { USB_DEVICE(KVASER_VENDOR_ID, USB_MINI_PCIE_2HS_PRODUCT_ID) }, /* USBCANII family IDs */ { USB_DEVICE(KVASER_VENDOR_ID, USB_USBCAN2_PRODUCT_ID), -- cgit v1.2.3 From 055ddaace03580455a7b7dbea8e93d62acee61fc Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Wed, 22 Jun 2016 20:29:37 +0200 Subject: crypto: user - re-add size check for CRYPTO_MSG_GETALG Commit 9aa867e46565 ("crypto: user - Add CRYPTO_MSG_DELRNG") accidentally removed the minimum size check for CRYPTO_MSG_GETALG netlink messages. This allows userland to send a truncated CRYPTO_MSG_GETALG message as short as a netlink header only making crypto_report() operate on uninitialized memory by accessing data beyond the end of the netlink message. Fix this be re-adding the minimum required size of CRYPTO_MSG_GETALG messages to the crypto_msg_min[] array. Fixes: 9aa867e46565 ("crypto: user - Add CRYPTO_MSG_DELRNG") Cc: stable@vger.kernel.org # v4.2 Signed-off-by: Mathias Krause Cc: Steffen Klassert Signed-off-by: Herbert Xu --- crypto/crypto_user.c | 1 + 1 file changed, 1 insertion(+) diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c index 43fe85f20d57..7097a3395b25 100644 --- a/crypto/crypto_user.c +++ b/crypto/crypto_user.c @@ -455,6 +455,7 @@ static const int crypto_msg_min[CRYPTO_NR_MSGTYPES] = { [CRYPTO_MSG_NEWALG - CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg), [CRYPTO_MSG_DELALG - CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg), [CRYPTO_MSG_UPDATEALG - CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg), + [CRYPTO_MSG_GETALG - CRYPTO_MSG_BASE] = MSGSIZE(crypto_user_alg), [CRYPTO_MSG_DELRNG - CRYPTO_MSG_BASE] = 0, }; -- cgit v1.2.3 From 962fcef33b03395051367181a0549d29d109d9a4 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Sat, 18 Jun 2016 13:03:36 +0800 Subject: esp: Fix ESN generation under UDP encapsulation Blair Steven noticed that ESN in conjunction with UDP encapsulation is broken because we set the temporary ESP header to the wrong spot. This patch fixes this by first of all using the right spot, i.e., 4 bytes off the real ESP header, and then saving this information so that after encryption we can restore it properly. Fixes: 7021b2e1cddd ("esp4: Switch to new AEAD interface") Reported-by: Blair Steven Signed-off-by: Herbert Xu Acked-by: Steffen Klassert Signed-off-by: David S. Miller --- net/ipv4/esp4.c | 52 ++++++++++++++++++++++++++++++++-------------------- 1 file changed, 32 insertions(+), 20 deletions(-) diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c index 477937465a20..d95631d09248 100644 --- a/net/ipv4/esp4.c +++ b/net/ipv4/esp4.c @@ -23,6 +23,11 @@ struct esp_skb_cb { void *tmp; }; +struct esp_output_extra { + __be32 seqhi; + u32 esphoff; +}; + #define ESP_SKB_CB(__skb) ((struct esp_skb_cb *)&((__skb)->cb[0])) static u32 esp4_get_mtu(struct xfrm_state *x, int mtu); @@ -35,11 +40,11 @@ static u32 esp4_get_mtu(struct xfrm_state *x, int mtu); * * TODO: Use spare space in skb for this where possible. */ -static void *esp_alloc_tmp(struct crypto_aead *aead, int nfrags, int seqhilen) +static void *esp_alloc_tmp(struct crypto_aead *aead, int nfrags, int extralen) { unsigned int len; - len = seqhilen; + len = extralen; len += crypto_aead_ivsize(aead); @@ -57,15 +62,16 @@ static void *esp_alloc_tmp(struct crypto_aead *aead, int nfrags, int seqhilen) return kmalloc(len, GFP_ATOMIC); } -static inline __be32 *esp_tmp_seqhi(void *tmp) +static inline void *esp_tmp_extra(void *tmp) { - return PTR_ALIGN((__be32 *)tmp, __alignof__(__be32)); + return PTR_ALIGN(tmp, __alignof__(struct esp_output_extra)); } -static inline u8 *esp_tmp_iv(struct crypto_aead *aead, void *tmp, int seqhilen) + +static inline u8 *esp_tmp_iv(struct crypto_aead *aead, void *tmp, int extralen) { return crypto_aead_ivsize(aead) ? - PTR_ALIGN((u8 *)tmp + seqhilen, - crypto_aead_alignmask(aead) + 1) : tmp + seqhilen; + PTR_ALIGN((u8 *)tmp + extralen, + crypto_aead_alignmask(aead) + 1) : tmp + extralen; } static inline struct aead_request *esp_tmp_req(struct crypto_aead *aead, u8 *iv) @@ -99,7 +105,7 @@ static void esp_restore_header(struct sk_buff *skb, unsigned int offset) { struct ip_esp_hdr *esph = (void *)(skb->data + offset); void *tmp = ESP_SKB_CB(skb)->tmp; - __be32 *seqhi = esp_tmp_seqhi(tmp); + __be32 *seqhi = esp_tmp_extra(tmp); esph->seq_no = esph->spi; esph->spi = *seqhi; @@ -107,7 +113,11 @@ static void esp_restore_header(struct sk_buff *skb, unsigned int offset) static void esp_output_restore_header(struct sk_buff *skb) { - esp_restore_header(skb, skb_transport_offset(skb) - sizeof(__be32)); + void *tmp = ESP_SKB_CB(skb)->tmp; + struct esp_output_extra *extra = esp_tmp_extra(tmp); + + esp_restore_header(skb, skb_transport_offset(skb) + extra->esphoff - + sizeof(__be32)); } static void esp_output_done_esn(struct crypto_async_request *base, int err) @@ -121,6 +131,7 @@ static void esp_output_done_esn(struct crypto_async_request *base, int err) static int esp_output(struct xfrm_state *x, struct sk_buff *skb) { int err; + struct esp_output_extra *extra; struct ip_esp_hdr *esph; struct crypto_aead *aead; struct aead_request *req; @@ -137,8 +148,7 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb) int tfclen; int nfrags; int assoclen; - int seqhilen; - __be32 *seqhi; + int extralen; __be64 seqno; /* skb is pure payload to encrypt */ @@ -166,21 +176,21 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb) nfrags = err; assoclen = sizeof(*esph); - seqhilen = 0; + extralen = 0; if (x->props.flags & XFRM_STATE_ESN) { - seqhilen += sizeof(__be32); - assoclen += seqhilen; + extralen += sizeof(*extra); + assoclen += sizeof(__be32); } - tmp = esp_alloc_tmp(aead, nfrags, seqhilen); + tmp = esp_alloc_tmp(aead, nfrags, extralen); if (!tmp) { err = -ENOMEM; goto error; } - seqhi = esp_tmp_seqhi(tmp); - iv = esp_tmp_iv(aead, tmp, seqhilen); + extra = esp_tmp_extra(tmp); + iv = esp_tmp_iv(aead, tmp, extralen); req = esp_tmp_req(aead, iv); sg = esp_req_sg(aead, req); @@ -247,8 +257,10 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb) * encryption. */ if ((x->props.flags & XFRM_STATE_ESN)) { - esph = (void *)(skb_transport_header(skb) - sizeof(__be32)); - *seqhi = esph->spi; + extra->esphoff = (unsigned char *)esph - + skb_transport_header(skb); + esph = (struct ip_esp_hdr *)((unsigned char *)esph - 4); + extra->seqhi = esph->spi; esph->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output.hi); aead_request_set_callback(req, 0, esp_output_done_esn, skb); } @@ -445,7 +457,7 @@ static int esp_input(struct xfrm_state *x, struct sk_buff *skb) goto out; ESP_SKB_CB(skb)->tmp = tmp; - seqhi = esp_tmp_seqhi(tmp); + seqhi = esp_tmp_extra(tmp); iv = esp_tmp_iv(aead, tmp, seqhilen); req = esp_tmp_req(aead, iv); sg = esp_req_sg(aead, req); -- cgit v1.2.3 From 067a7cd06f7bf860f2e3415394b065b9a0983802 Mon Sep 17 00:00:00 2001 From: WANG Cong Date: Mon, 20 Jun 2016 13:37:18 -0700 Subject: act_ife: only acquire tcf_lock for existing actions Alexey reported that we have GFP_KERNEL allocation when holding the spinlock tcf_lock. Actually we don't have to take that spinlock for all the cases, especially for the new one we just create. To modify the existing actions, we still need this spinlock to make sure the whole update is atomic. For net-next, we can get rid of this spinlock because we already hold the RTNL lock on slow path, and on fast path we can use RCU to protect the metalist. Joint work with Jamal. Reported-by: Alexey Khoroshilov Cc: Jamal Hadi Salim Signed-off-by: Cong Wang Acked-by: Jamal Hadi Salim Signed-off-by: David S. Miller --- include/net/tc_act/tc_ife.h | 6 ++--- net/sched/act_ife.c | 55 +++++++++++++++++++++++++-------------------- 2 files changed, 34 insertions(+), 27 deletions(-) diff --git a/include/net/tc_act/tc_ife.h b/include/net/tc_act/tc_ife.h index dc9a09aefb33..c55facd17b7e 100644 --- a/include/net/tc_act/tc_ife.h +++ b/include/net/tc_act/tc_ife.h @@ -36,7 +36,7 @@ struct tcf_meta_ops { int (*encode)(struct sk_buff *, void *, struct tcf_meta_info *); int (*decode)(struct sk_buff *, void *, u16 len); int (*get)(struct sk_buff *skb, struct tcf_meta_info *mi); - int (*alloc)(struct tcf_meta_info *, void *); + int (*alloc)(struct tcf_meta_info *, void *, gfp_t); void (*release)(struct tcf_meta_info *); int (*validate)(void *val, int len); struct module *owner; @@ -48,8 +48,8 @@ int ife_get_meta_u32(struct sk_buff *skb, struct tcf_meta_info *mi); int ife_get_meta_u16(struct sk_buff *skb, struct tcf_meta_info *mi); int ife_tlv_meta_encode(void *skbdata, u16 attrtype, u16 dlen, const void *dval); -int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval); -int ife_alloc_meta_u16(struct tcf_meta_info *mi, void *metaval); +int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval, gfp_t gfp); +int ife_alloc_meta_u16(struct tcf_meta_info *mi, void *metaval, gfp_t gfp); int ife_check_meta_u32(u32 metaval, struct tcf_meta_info *mi); int ife_encode_meta_u32(u32 metaval, void *skbdata, struct tcf_meta_info *mi); int ife_validate_meta_u32(void *val, int len); diff --git a/net/sched/act_ife.c b/net/sched/act_ife.c index 658046dfe02d..e4076598f214 100644 --- a/net/sched/act_ife.c +++ b/net/sched/act_ife.c @@ -106,9 +106,9 @@ int ife_get_meta_u16(struct sk_buff *skb, struct tcf_meta_info *mi) } EXPORT_SYMBOL_GPL(ife_get_meta_u16); -int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval) +int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval, gfp_t gfp) { - mi->metaval = kmemdup(metaval, sizeof(u32), GFP_KERNEL); + mi->metaval = kmemdup(metaval, sizeof(u32), gfp); if (!mi->metaval) return -ENOMEM; @@ -116,9 +116,9 @@ int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval) } EXPORT_SYMBOL_GPL(ife_alloc_meta_u32); -int ife_alloc_meta_u16(struct tcf_meta_info *mi, void *metaval) +int ife_alloc_meta_u16(struct tcf_meta_info *mi, void *metaval, gfp_t gfp) { - mi->metaval = kmemdup(metaval, sizeof(u16), GFP_KERNEL); + mi->metaval = kmemdup(metaval, sizeof(u16), gfp); if (!mi->metaval) return -ENOMEM; @@ -240,10 +240,10 @@ static int ife_validate_metatype(struct tcf_meta_ops *ops, void *val, int len) } /* called when adding new meta information - * under ife->tcf_lock + * under ife->tcf_lock for existing action */ static int load_metaops_and_vet(struct tcf_ife_info *ife, u32 metaid, - void *val, int len) + void *val, int len, bool exists) { struct tcf_meta_ops *ops = find_ife_oplist(metaid); int ret = 0; @@ -251,11 +251,13 @@ static int load_metaops_and_vet(struct tcf_ife_info *ife, u32 metaid, if (!ops) { ret = -ENOENT; #ifdef CONFIG_MODULES - spin_unlock_bh(&ife->tcf_lock); + if (exists) + spin_unlock_bh(&ife->tcf_lock); rtnl_unlock(); request_module("ifemeta%u", metaid); rtnl_lock(); - spin_lock_bh(&ife->tcf_lock); + if (exists) + spin_lock_bh(&ife->tcf_lock); ops = find_ife_oplist(metaid); #endif } @@ -272,10 +274,10 @@ static int load_metaops_and_vet(struct tcf_ife_info *ife, u32 metaid, } /* called when adding new meta information - * under ife->tcf_lock + * under ife->tcf_lock for existing action */ static int add_metainfo(struct tcf_ife_info *ife, u32 metaid, void *metaval, - int len) + int len, bool exists) { struct tcf_meta_info *mi = NULL; struct tcf_meta_ops *ops = find_ife_oplist(metaid); @@ -284,7 +286,7 @@ static int add_metainfo(struct tcf_ife_info *ife, u32 metaid, void *metaval, if (!ops) return -ENOENT; - mi = kzalloc(sizeof(*mi), GFP_KERNEL); + mi = kzalloc(sizeof(*mi), exists ? GFP_ATOMIC : GFP_KERNEL); if (!mi) { /*put back what find_ife_oplist took */ module_put(ops->owner); @@ -294,7 +296,7 @@ static int add_metainfo(struct tcf_ife_info *ife, u32 metaid, void *metaval, mi->metaid = metaid; mi->ops = ops; if (len > 0) { - ret = ops->alloc(mi, metaval); + ret = ops->alloc(mi, metaval, exists ? GFP_ATOMIC : GFP_KERNEL); if (ret != 0) { kfree(mi); module_put(ops->owner); @@ -307,14 +309,14 @@ static int add_metainfo(struct tcf_ife_info *ife, u32 metaid, void *metaval, return ret; } -static int use_all_metadata(struct tcf_ife_info *ife) +static int use_all_metadata(struct tcf_ife_info *ife, bool exists) { struct tcf_meta_ops *o; int rc = 0; int installed = 0; list_for_each_entry(o, &ifeoplist, list) { - rc = add_metainfo(ife, o->metaid, NULL, 0); + rc = add_metainfo(ife, o->metaid, NULL, 0, exists); if (rc == 0) installed += 1; } @@ -385,8 +387,9 @@ static void tcf_ife_cleanup(struct tc_action *a, int bind) spin_unlock_bh(&ife->tcf_lock); } -/* under ife->tcf_lock */ -static int populate_metalist(struct tcf_ife_info *ife, struct nlattr **tb) +/* under ife->tcf_lock for existing action */ +static int populate_metalist(struct tcf_ife_info *ife, struct nlattr **tb, + bool exists) { int len = 0; int rc = 0; @@ -398,11 +401,11 @@ static int populate_metalist(struct tcf_ife_info *ife, struct nlattr **tb) val = nla_data(tb[i]); len = nla_len(tb[i]); - rc = load_metaops_and_vet(ife, i, val, len); + rc = load_metaops_and_vet(ife, i, val, len, exists); if (rc != 0) return rc; - rc = add_metainfo(ife, i, val, len); + rc = add_metainfo(ife, i, val, len, exists); if (rc) return rc; } @@ -474,7 +477,8 @@ static int tcf_ife_init(struct net *net, struct nlattr *nla, saddr = nla_data(tb[TCA_IFE_SMAC]); } - spin_lock_bh(&ife->tcf_lock); + if (exists) + spin_lock_bh(&ife->tcf_lock); ife->tcf_action = parm->action; if (parm->flags & IFE_ENCODE) { @@ -504,11 +508,12 @@ metadata_parse_err: if (ret == ACT_P_CREATED) _tcf_ife_cleanup(a, bind); - spin_unlock_bh(&ife->tcf_lock); + if (exists) + spin_unlock_bh(&ife->tcf_lock); return err; } - err = populate_metalist(ife, tb2); + err = populate_metalist(ife, tb2, exists); if (err) goto metadata_parse_err; @@ -518,17 +523,19 @@ metadata_parse_err: * as we can. You better have at least one else we are * going to bail out */ - err = use_all_metadata(ife); + err = use_all_metadata(ife, exists); if (err) { if (ret == ACT_P_CREATED) _tcf_ife_cleanup(a, bind); - spin_unlock_bh(&ife->tcf_lock); + if (exists) + spin_unlock_bh(&ife->tcf_lock); return err; } } - spin_unlock_bh(&ife->tcf_lock); + if (exists) + spin_unlock_bh(&ife->tcf_lock); if (ret == ACT_P_CREATED) tcf_hash_insert(tn, a); -- cgit v1.2.3 From 817e9f2c5c262b2716f5d77020d118ad53315f3e Mon Sep 17 00:00:00 2001 From: WANG Cong Date: Mon, 20 Jun 2016 13:37:19 -0700 Subject: act_ife: acquire ife_mod_lock before reading ifeoplist Cc: Jamal Hadi Salim Signed-off-by: Cong Wang Acked-by: Jamal Hadi Salim Signed-off-by: David S. Miller --- net/sched/act_ife.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/net/sched/act_ife.c b/net/sched/act_ife.c index e4076598f214..ea4a2fef1b71 100644 --- a/net/sched/act_ife.c +++ b/net/sched/act_ife.c @@ -277,7 +277,7 @@ static int load_metaops_and_vet(struct tcf_ife_info *ife, u32 metaid, * under ife->tcf_lock for existing action */ static int add_metainfo(struct tcf_ife_info *ife, u32 metaid, void *metaval, - int len, bool exists) + int len, bool atomic) { struct tcf_meta_info *mi = NULL; struct tcf_meta_ops *ops = find_ife_oplist(metaid); @@ -286,7 +286,7 @@ static int add_metainfo(struct tcf_ife_info *ife, u32 metaid, void *metaval, if (!ops) return -ENOENT; - mi = kzalloc(sizeof(*mi), exists ? GFP_ATOMIC : GFP_KERNEL); + mi = kzalloc(sizeof(*mi), atomic ? GFP_ATOMIC : GFP_KERNEL); if (!mi) { /*put back what find_ife_oplist took */ module_put(ops->owner); @@ -296,7 +296,7 @@ static int add_metainfo(struct tcf_ife_info *ife, u32 metaid, void *metaval, mi->metaid = metaid; mi->ops = ops; if (len > 0) { - ret = ops->alloc(mi, metaval, exists ? GFP_ATOMIC : GFP_KERNEL); + ret = ops->alloc(mi, metaval, atomic ? GFP_ATOMIC : GFP_KERNEL); if (ret != 0) { kfree(mi); module_put(ops->owner); @@ -309,17 +309,19 @@ static int add_metainfo(struct tcf_ife_info *ife, u32 metaid, void *metaval, return ret; } -static int use_all_metadata(struct tcf_ife_info *ife, bool exists) +static int use_all_metadata(struct tcf_ife_info *ife) { struct tcf_meta_ops *o; int rc = 0; int installed = 0; + read_lock(&ife_mod_lock); list_for_each_entry(o, &ifeoplist, list) { - rc = add_metainfo(ife, o->metaid, NULL, 0, exists); + rc = add_metainfo(ife, o->metaid, NULL, 0, true); if (rc == 0) installed += 1; } + read_unlock(&ife_mod_lock); if (installed) return 0; @@ -523,7 +525,7 @@ metadata_parse_err: * as we can. You better have at least one else we are * going to bail out */ - err = use_all_metadata(ife, exists); + err = use_all_metadata(ife); if (err) { if (ret == ACT_P_CREATED) _tcf_ife_cleanup(a, bind); -- cgit v1.2.3 From 33cdcee04be3b4482be97393167e7561b2584e1e Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Wed, 22 Jun 2016 09:25:14 +0200 Subject: pwm: Fix pwm_apply_args() Commit 5ec803edcb70 ("pwm: Add core infrastructure to allow atomic updates"), implemented pwm_disable() as a wrapper around pwm_apply_state(), and then, commit ef2bf4997f7d ("pwm: Improve args checking in pwm_apply_state()") added missing checks on the ->period value in pwm_apply_state() to ensure we were not passing inappropriate values to the ->config() or ->apply() methods. The conjunction of these 2 commits led to a case where pwm_disable() was no longer succeeding, thus preventing the polarity setting done in pwm_apply_args(). Set a valid period in pwm_apply_args() to ensure polarity setting won't be rejected. Signed-off-by: Boris Brezillon Reported-by: Geert Uytterhoeven Suggested-by: Brian Norris Fixes: 5ec803edcb70 ("pwm: Add core infrastructure to allow atomic updates") Tested-by: Geert Uytterhoeven Reviewed-by: Brian Norris Signed-off-by: Thierry Reding --- include/linux/pwm.h | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 908b67c847cd..c038ae36b10e 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -464,6 +464,8 @@ static inline bool pwm_can_sleep(struct pwm_device *pwm) static inline void pwm_apply_args(struct pwm_device *pwm) { + struct pwm_state state = { }; + /* * PWM users calling pwm_apply_args() expect to have a fresh config * where the polarity and period are set according to pwm_args info. @@ -476,18 +478,20 @@ static inline void pwm_apply_args(struct pwm_device *pwm) * at startup (even if they are actually enabled), thus authorizing * polarity setting. * - * Instead of setting ->enabled to false, we call pwm_disable() - * before pwm_set_polarity() to ensure that everything is configured - * as expected, and the PWM is really disabled when the user request - * it. + * To fulfill this requirement, we apply a new state which disables + * the PWM device and set the reference period and polarity config. * * Note that PWM users requiring a smooth handover between the * bootloader and the kernel (like critical regulators controlled by * PWM devices) will have to switch to the atomic API and avoid calling * pwm_apply_args(). */ - pwm_disable(pwm); - pwm_set_polarity(pwm, pwm->args.polarity); + + state.enabled = false; + state.polarity = pwm->args.polarity; + state.period = pwm->args.period; + + pwm_apply_state(pwm, &state); } struct pwm_lookup { -- cgit v1.2.3 From c7f1429389ec1aa25e042bb13451385fbb596f8c Mon Sep 17 00:00:00 2001 From: Cameron Gutman Date: Thu, 23 Jun 2016 10:24:42 -0700 Subject: Input: xpad - fix oops when attaching an unknown Xbox One gamepad Xbox One controllers have multiple interfaces which all have the same class, subclass, and protocol. One of the these interfaces has only a single endpoint. When Xpad attempts to bind to this interface, it causes an oops when trying initialize the output URB by trying to access the second endpoint's descriptor. This situation was avoided for known Xbox One devices by checking the XTYPE constant associated with the VID and PID tuple. However, this breaks when new or previously unknown Xbox One controllers are attached to the system. This change addresses the problem by deriving the XTYPE for Xbox One controllers based on the interface protocol before checking the interface number. Fixes: 1a48ff81b391 ("Input: xpad - add support for Xbox One controllers") Signed-off-by: Cameron Gutman Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/joystick/xpad.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index 923c57236c51..3438e98c145a 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -1437,16 +1437,6 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id break; } - if (xpad_device[i].xtype == XTYPE_XBOXONE && - intf->cur_altsetting->desc.bInterfaceNumber != 0) { - /* - * The Xbox One controller lists three interfaces all with the - * same interface class, subclass and protocol. Differentiate by - * interface number. - */ - return -ENODEV; - } - xpad = kzalloc(sizeof(struct usb_xpad), GFP_KERNEL); if (!xpad) return -ENOMEM; @@ -1478,6 +1468,8 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id if (intf->cur_altsetting->desc.bInterfaceClass == USB_CLASS_VENDOR_SPEC) { if (intf->cur_altsetting->desc.bInterfaceProtocol == 129) xpad->xtype = XTYPE_XBOX360W; + else if (intf->cur_altsetting->desc.bInterfaceProtocol == 208) + xpad->xtype = XTYPE_XBOXONE; else xpad->xtype = XTYPE_XBOX360; } else { @@ -1492,6 +1484,17 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id xpad->mapping |= MAP_STICKS_TO_NULL; } + if (xpad->xtype == XTYPE_XBOXONE && + intf->cur_altsetting->desc.bInterfaceNumber != 0) { + /* + * The Xbox One controller lists three interfaces all with the + * same interface class, subclass and protocol. Differentiate by + * interface number. + */ + error = -ENODEV; + goto err_free_in_urb; + } + error = xpad_init_output(intf, xpad); if (error) goto err_free_in_urb; -- cgit v1.2.3 From 02bae045f3b3bc5681f075be0a8b1313147d1df2 Mon Sep 17 00:00:00 2001 From: Rex Zhu Date: Thu, 23 Jun 2016 10:58:26 +0800 Subject: drm/amd/powerplay: add some definition for FFC feature on polaris. Signed-off-by: Rex Zhu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/inc/polaris10_ppsmc.h | 2 ++ drivers/gpu/drm/amd/powerplay/inc/smu74_discrete.h | 3 ++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/powerplay/inc/polaris10_ppsmc.h b/drivers/gpu/drm/amd/powerplay/inc/polaris10_ppsmc.h index d41d37ab5b7c..b8f4b73c322e 100644 --- a/drivers/gpu/drm/amd/powerplay/inc/polaris10_ppsmc.h +++ b/drivers/gpu/drm/amd/powerplay/inc/polaris10_ppsmc.h @@ -392,6 +392,8 @@ typedef uint16_t PPSMC_Result; #define PPSMC_MSG_SetGpuPllDfsForSclk ((uint16_t) 0x300) #define PPSMC_MSG_Didt_Block_Function ((uint16_t) 0x301) +#define PPSMC_MSG_SetVBITimeout ((uint16_t) 0x306) + #define PPSMC_MSG_SecureSRBMWrite ((uint16_t) 0x600) #define PPSMC_MSG_SecureSRBMRead ((uint16_t) 0x601) #define PPSMC_MSG_SetAddress ((uint16_t) 0x800) diff --git a/drivers/gpu/drm/amd/powerplay/inc/smu74_discrete.h b/drivers/gpu/drm/amd/powerplay/inc/smu74_discrete.h index b85ff5400e57..899d6d8108c2 100644 --- a/drivers/gpu/drm/amd/powerplay/inc/smu74_discrete.h +++ b/drivers/gpu/drm/amd/powerplay/inc/smu74_discrete.h @@ -270,7 +270,8 @@ struct SMU74_Discrete_DpmTable { uint8_t BootPhases; uint8_t VRHotLevel; - uint8_t Reserved1[3]; + uint8_t LdoRefSel; + uint8_t Reserved1[2]; uint16_t FanStartTemperature; uint16_t FanStopTemperature; uint16_t MaxVoltage; -- cgit v1.2.3 From 83a7af6dcfd2d84066c6d19bf2bd837f7be4a5ca Mon Sep 17 00:00:00 2001 From: Rex Zhu Date: Thu, 23 Jun 2016 11:05:00 +0800 Subject: drm/amd/powerplay: disable FFC. SMC need use VBI signal for MCLK switching Send 2 x frame time as vbi timeout Signed-off-by: Rex Zhu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- .../gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c | 26 +++++++++++++++++----- .../gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.h | 1 + drivers/gpu/drm/amd/powerplay/inc/hwmgr.h | 2 ++ 3 files changed, 24 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c index 64ee78f7d41e..20ccbc73a8f7 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c @@ -1805,6 +1805,7 @@ static int polaris10_populate_clock_stretcher_data_table(struct pp_hwmgr *hwmgr) data->smc_state_table.Sclk_voltageOffset[i] = volt_offset; } + data->smc_state_table.LdoRefSel = (table_info->cac_dtp_table->ucCKS_LDO_REFSEL != 0) ? table_info->cac_dtp_table->ucCKS_LDO_REFSEL : 6; /* Populate CKS Lookup Table */ if (stretch_amount == 1 || stretch_amount == 2 || stretch_amount == 5) stretch_amount2 = 0; @@ -2487,6 +2488,8 @@ int polaris10_enable_dpm_tasks(struct pp_hwmgr *hwmgr) PP_ASSERT_WITH_CODE((0 == tmp_result), "Failed to enable VR hot GPIO interrupt!", result = tmp_result); + smum_send_msg_to_smc(hwmgr->smumgr, (PPSMC_Msg)PPSMC_HasDisplay); + tmp_result = polaris10_enable_sclk_control(hwmgr); PP_ASSERT_WITH_CODE((0 == tmp_result), "Failed to enable SCLK control!", result = tmp_result); @@ -4359,6 +4362,15 @@ static int polaris10_notify_link_speed_change_after_state_change( return 0; } +static int polaris10_notify_smc_display(struct pp_hwmgr *hwmgr) +{ + struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); + + smum_send_msg_to_smc_with_parameter(hwmgr->smumgr, + (PPSMC_Msg)PPSMC_MSG_SetVBITimeout, data->frame_time_x2); + return (smum_send_msg_to_smc(hwmgr->smumgr, (PPSMC_Msg)PPSMC_HasDisplay) == 0) ? 0 : -EINVAL; +} + static int polaris10_set_power_state_tasks(struct pp_hwmgr *hwmgr, const void *input) { int tmp_result, result = 0; @@ -4407,6 +4419,11 @@ static int polaris10_set_power_state_tasks(struct pp_hwmgr *hwmgr, const void *i "Failed to program memory timing parameters!", result = tmp_result); + tmp_result = polaris10_notify_smc_display(hwmgr); + PP_ASSERT_WITH_CODE((0 == tmp_result), + "Failed to notify smc display settings!", + result = tmp_result); + tmp_result = polaris10_unfreeze_sclk_mclk_dpm(hwmgr); PP_ASSERT_WITH_CODE((0 == tmp_result), "Failed to unfreeze SCLK MCLK DPM!", @@ -4441,6 +4458,7 @@ static int polaris10_set_max_fan_pwm_output(struct pp_hwmgr *hwmgr, uint16_t us_ PPSMC_MSG_SetFanPwmMax, us_max_fan_pwm); } + int polaris10_notify_smc_display_change(struct pp_hwmgr *hwmgr, bool has_display) { PPSMC_Msg msg = has_display ? (PPSMC_Msg)PPSMC_HasDisplay : (PPSMC_Msg)PPSMC_NoDisplay; @@ -4460,8 +4478,6 @@ int polaris10_notify_smc_display_config_after_ps_adjustment(struct pp_hwmgr *hwm if (num_active_displays > 1) /* to do && (pHwMgr->pPECI->displayConfiguration.bMultiMonitorInSync != TRUE)) */ polaris10_notify_smc_display_change(hwmgr, false); - else - polaris10_notify_smc_display_change(hwmgr, true); return 0; } @@ -4502,6 +4518,8 @@ int polaris10_program_display_gap(struct pp_hwmgr *hwmgr) frame_time_in_us = 1000000 / refresh_rate; pre_vbi_time_in_us = frame_time_in_us - 200 - mode_info.vblank_time_us; + data->frame_time_x2 = frame_time_in_us * 2 / 100; + display_gap2 = pre_vbi_time_in_us * (ref_clock / 100); cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC, ixCG_DISPLAY_GAP_CNTL2, display_gap2); @@ -4510,8 +4528,6 @@ int polaris10_program_display_gap(struct pp_hwmgr *hwmgr) cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC, data->soft_regs_start + offsetof(SMU74_SoftRegisters, VBlankTimeout), (frame_time_in_us - pre_vbi_time_in_us)); - polaris10_notify_smc_display_change(hwmgr, num_active_displays != 0); - return 0; } @@ -4623,7 +4639,7 @@ int polaris10_upload_mc_firmware(struct pp_hwmgr *hwmgr) return 0; } - data->need_long_memory_training = true; + data->need_long_memory_training = false; /* * PPMCME_FirmwareDescriptorEntry *pfd = NULL; diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.h b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.h index d717789441f5..afc3434822d1 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.h +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.h @@ -315,6 +315,7 @@ struct polaris10_hwmgr { uint32_t avfs_vdroop_override_setting; bool apply_avfs_cks_off_voltage; + uint32_t frame_time_x2; }; /* To convert to Q8.8 format for firmware */ diff --git a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h index 28f571449495..77e8e33d5870 100644 --- a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h +++ b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h @@ -411,6 +411,8 @@ struct phm_cac_tdp_table { uint8_t ucVr_I2C_Line; uint8_t ucPlx_I2C_address; uint8_t ucPlx_I2C_Line; + uint32_t usBoostPowerLimit; + uint8_t ucCKS_LDO_REFSEL; }; struct phm_ppm_table { -- cgit v1.2.3 From 0812a945fbb814e7946fbe6ddcc81d054c8b6c91 Mon Sep 17 00:00:00 2001 From: Rex Zhu Date: Wed, 22 Jun 2016 21:00:09 +0800 Subject: drm/amd/powerplay: Update CKS on/ CKS off voltage offset calculation CKS on/off voltage offset calculation algorithm takes in a few coefficients. We need to update them for polaris to latest coefficients to align with BB. Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher --- .../gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c | 26 ++++++++++++++-------- 1 file changed, 17 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c index 20ccbc73a8f7..d23dcce6c03c 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c @@ -98,6 +98,7 @@ #define PCIE_BUS_CLK 10000 #define TCLK (PCIE_BUS_CLK / 10) +#define CEILING_UCHAR(double) ((double-(uint8_t)(double)) > 0 ? (uint8_t)(double+1) : (uint8_t)(double)) static const uint16_t polaris10_clock_stretcher_lookup_table[2][4] = { {600, 1050, 3, 0}, {600, 1050, 6, 1} }; @@ -1787,20 +1788,27 @@ static int polaris10_populate_clock_stretcher_data_table(struct pp_hwmgr *hwmgr) ro = efuse * (max -min)/255 + min; - /* Populate Sclk_CKS_masterEn0_7 and Sclk_voltageOffset */ + /* Populate Sclk_CKS_masterEn0_7 and Sclk_voltageOffset + * there is a little difference in calculating + * volt_with_cks with windows */ for (i = 0; i < sclk_table->count; i++) { data->smc_state_table.Sclk_CKS_masterEn0_7 |= sclk_table->entries[i].cks_enable << i; - - volt_without_cks = (uint32_t)(((ro - 40) * 1000 - 2753594 - sclk_table->entries[i].clk/100 * 136418 /1000) / \ - (sclk_table->entries[i].clk/100 * 1132925 /10000 - 242418)/100); - - volt_with_cks = (uint32_t)((ro * 1000 -2396351 - sclk_table->entries[i].clk/100 * 329021/1000) / \ - (sclk_table->entries[i].clk/10000 * 649434 /1000 - 18005)/10); + if (hwmgr->chip_id == CHIP_POLARIS10) { + volt_without_cks = (uint32_t)((2753594000 + (sclk_table->entries[i].clk/100) * 136418 -(ro - 70) * 1000000) / \ + (2424180 - (sclk_table->entries[i].clk/100) * 1132925/1000)); + volt_with_cks = (uint32_t)((279720200 + sclk_table->entries[i].clk * 3232 - (ro - 65) * 100000000) / \ + (252248000 - sclk_table->entries[i].clk/100 * 115764)); + } else { + volt_without_cks = (uint32_t)((2416794800 + (sclk_table->entries[i].clk/100) * 1476925/10 -(ro - 50) * 1000000) / \ + (2625416 - (sclk_table->entries[i].clk/100) * 12586807/10000)); + volt_with_cks = (uint32_t)((2999656000 + sclk_table->entries[i].clk * 392803/100 - (ro - 44) * 1000000) / \ + (3422454 - sclk_table->entries[i].clk/100 * 18886376/10000)); + } if (volt_without_cks >= volt_with_cks) - volt_offset = (uint8_t)(((volt_without_cks - volt_with_cks + - sclk_table->entries[i].cks_voffset) * 100 / 625) + 1); + volt_offset = (uint8_t)CEILING_UCHAR((volt_without_cks - volt_with_cks + + sclk_table->entries[i].cks_voffset) * 100 / 625); data->smc_state_table.Sclk_voltageOffset[i] = volt_offset; } -- cgit v1.2.3 From 12afb34400eb2b301f06b2aa3535497d14faee59 Mon Sep 17 00:00:00 2001 From: Ping Cheng Date: Thu, 23 Jun 2016 10:54:17 -0700 Subject: Input: wacom_w8001 - w8001_MAX_LENGTH should be 13 Somehow the patch that added two-finger touch support forgot to update W8001_MAX_LENGTH from 11 to 13. Signed-off-by: Ping Cheng Reviewed-by: Peter Hutterer Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/wacom_w8001.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c index bab3c6acf6a2..b1b412766da8 100644 --- a/drivers/input/touchscreen/wacom_w8001.c +++ b/drivers/input/touchscreen/wacom_w8001.c @@ -27,7 +27,7 @@ MODULE_AUTHOR("Jaya Kumar "); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); -#define W8001_MAX_LENGTH 11 +#define W8001_MAX_LENGTH 13 #define W8001_LEAD_MASK 0x80 #define W8001_LEAD_BYTE 0x80 #define W8001_TAB_MASK 0x40 -- cgit v1.2.3 From 21de12ee5568fd1aec47890c72967abf791ac80a Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 20 Jun 2016 15:00:43 -0700 Subject: netem: fix a use after free If the packet was dropped by lower qdisc, then we must not access it later. Save qdisc_pkt_len(skb) in a temp variable. Fixes: 2ccccf5fb43f ("net_sched: update hierarchical backlog too") Signed-off-by: Eric Dumazet Cc: WANG Cong Cc: Jamal Hadi Salim Cc: Stephen Hemminger Signed-off-by: David S. Miller --- net/sched/sch_netem.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c index 205bed00dd34..178f1630a036 100644 --- a/net/sched/sch_netem.c +++ b/net/sched/sch_netem.c @@ -650,14 +650,14 @@ deliver: #endif if (q->qdisc) { + unsigned int pkt_len = qdisc_pkt_len(skb); int err = qdisc_enqueue(skb, q->qdisc); - if (unlikely(err != NET_XMIT_SUCCESS)) { - if (net_xmit_drop_count(err)) { - qdisc_qstats_drop(sch); - qdisc_tree_reduce_backlog(sch, 1, - qdisc_pkt_len(skb)); - } + if (err != NET_XMIT_SUCCESS && + net_xmit_drop_count(err)) { + qdisc_qstats_drop(sch); + qdisc_tree_reduce_backlog(sch, 1, + pkt_len); } goto tfifo_dequeue; } -- cgit v1.2.3 From 52fe705b493d40b472b9e7220a71bdca8537c6b2 Mon Sep 17 00:00:00 2001 From: Chris Packham Date: Tue, 21 Jun 2016 15:39:43 +1200 Subject: net: vrf: replace hard tab with space in assignment The assignment of rth->dst.output in vrf_rt6_create() and vrf_rtable_create() used a hard tab before the '='. The neighboring assignments did not. Make the assignment of rth->dst.output consistent with the surrounding code. Signed-off-by: Chris Packham Acked-by: David Ahern Signed-off-by: David S. Miller --- drivers/net/vrf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/vrf.c b/drivers/net/vrf.c index dff08842f26d..8bd8c7e1ee87 100644 --- a/drivers/net/vrf.c +++ b/drivers/net/vrf.c @@ -304,7 +304,7 @@ static int vrf_rt6_create(struct net_device *dev) dst_hold(&rt6->dst); rt6->rt6i_table = rt6i_table; - rt6->dst.output = vrf_output6; + rt6->dst.output = vrf_output6; rcu_assign_pointer(vrf->rt6, rt6); rc = 0; @@ -403,7 +403,7 @@ static int vrf_rtable_create(struct net_device *dev) if (!rth) return -ENOMEM; - rth->dst.output = vrf_output; + rth->dst.output = vrf_output; rth->rt_table_id = vrf->tb_id; rcu_assign_pointer(vrf->rth, rth); -- cgit v1.2.3 From efeb2267bba8aa893afdadfc9bae4790777c600c Mon Sep 17 00:00:00 2001 From: Haishuang Yan Date: Tue, 21 Jun 2016 16:26:49 +0800 Subject: geneve: fix tx_errors statistics Tx errors present summation of errors encountered while transmitting packets. Signed-off-by: Haishuang Yan Signed-off-by: David S. Miller --- drivers/net/geneve.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index 305a04e45a13..cc39cefeae45 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -958,8 +958,8 @@ tx_error: dev->stats.collisions++; else if (err == -ENETUNREACH) dev->stats.tx_carrier_errors++; - else - dev->stats.tx_errors++; + + dev->stats.tx_errors++; return NETDEV_TX_OK; } @@ -1048,8 +1048,8 @@ tx_error: dev->stats.collisions++; else if (err == -ENETUNREACH) dev->stats.tx_carrier_errors++; - else - dev->stats.tx_errors++; + + dev->stats.tx_errors++; return NETDEV_TX_OK; } #endif -- cgit v1.2.3 From c40e4096bf0a12a76c349cbc4d1b2aa40a3d68cd Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Tue, 21 Jun 2016 16:36:06 +0300 Subject: MAINTAINERS: Update Mellanox's mlx4 Eth NIC driver entry Tariq Toukan is replacing Eugenia (Jenny) Emantayev as the mlx4 Ethernet driver maintainer, thanks to Jenny and good luck to him. Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- MAINTAINERS | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index 2ebe195951af..8cffceb61a2d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7406,7 +7406,7 @@ F: drivers/scsi/megaraid.* F: drivers/scsi/megaraid/ MELLANOX ETHERNET DRIVER (mlx4_en) -M: Eugenia Emantayev +M: Tariq Toukan L: netdev@vger.kernel.org S: Supported W: http://www.mellanox.com -- cgit v1.2.3 From 9e72ac7492149a229ce9039c680849cb682d7092 Mon Sep 17 00:00:00 2001 From: Ping Cheng Date: Thu, 23 Jun 2016 10:55:11 -0700 Subject: Input: wacom_w8001 - ignore invalid pen data packets ThinkPad X60 Tablet PC (pen only device) sometime posts packets that are larger than W8001_PKTLEN_TPCPEN. Reported-by: Chris J Arges Tested-by: Chris J Arges Signed-off-by: Ping Cheng Reviewed-by: Peter Hutterer Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/wacom_w8001.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c index b1b412766da8..0c9191cf324d 100644 --- a/drivers/input/touchscreen/wacom_w8001.c +++ b/drivers/input/touchscreen/wacom_w8001.c @@ -339,6 +339,15 @@ static irqreturn_t w8001_interrupt(struct serio *serio, w8001->idx = 0; parse_multi_touch(w8001); break; + + default: + /* + * ThinkPad X60 Tablet PC (pen only device) sometimes + * sends invalid data packets that are larger than + * W8001_PKTLEN_TPCPEN. Let's start over again. + */ + if (!w8001->touch_dev && w8001->idx > W8001_PKTLEN_TPCPEN - 1) + w8001->idx = 0; } return IRQ_HANDLED; -- cgit v1.2.3 From 226ba707744a51acb4244724e09caacb1d96aed9 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Tue, 21 Jun 2016 16:09:00 -0700 Subject: Input: elantech - add more IC body types to the list The touchpad in HP Pavilion 14-ab057ca reports it's version as 12 and according to Elan both 11 and 12 are valid IC types and should be identified as hw_version 4. Reported-by: Patrick Lessard Tested-by: Patrick Lessard Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/elantech.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 78f93cf68840..be5b399da5d3 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1568,13 +1568,7 @@ static int elantech_set_properties(struct elantech_data *etd) case 5: etd->hw_version = 3; break; - case 6: - case 7: - case 8: - case 9: - case 10: - case 13: - case 14: + case 6 ... 14: etd->hw_version = 4; break; default: -- cgit v1.2.3 From 82d6489d0fed2ec8a8c48c19e8d8a04ac8e5bb26 Mon Sep 17 00:00:00 2001 From: Daniel Bristot de Oliveira Date: Wed, 22 Jun 2016 17:28:41 -0300 Subject: cgroup: Disable IRQs while holding css_set_lock While testing the deadline scheduler + cgroup setup I hit this warning. [ 132.612935] ------------[ cut here ]------------ [ 132.612951] WARNING: CPU: 5 PID: 0 at kernel/softirq.c:150 __local_bh_enable_ip+0x6b/0x80 [ 132.612952] Modules linked in: (a ton of modules...) [ 132.612981] CPU: 5 PID: 0 Comm: swapper/5 Not tainted 4.7.0-rc2 #2 [ 132.612981] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.2-20150714_191134- 04/01/2014 [ 132.612982] 0000000000000086 45c8bb5effdd088b ffff88013fd43da0 ffffffff813d229e [ 132.612984] 0000000000000000 0000000000000000 ffff88013fd43de0 ffffffff810a652b [ 132.612985] 00000096811387b5 0000000000000200 ffff8800bab29d80 ffff880034c54c00 [ 132.612986] Call Trace: [ 132.612987] [] dump_stack+0x63/0x85 [ 132.612994] [] __warn+0xcb/0xf0 [ 132.612997] [] ? push_dl_task.part.32+0x170/0x170 [ 132.612999] [] warn_slowpath_null+0x1d/0x20 [ 132.613000] [] __local_bh_enable_ip+0x6b/0x80 [ 132.613008] [] _raw_write_unlock_bh+0x1a/0x20 [ 132.613010] [] _raw_spin_unlock_bh+0xe/0x10 [ 132.613015] [] put_css_set+0x5c/0x60 [ 132.613016] [] cgroup_free+0x7f/0xa0 [ 132.613017] [] __put_task_struct+0x42/0x140 [ 132.613018] [] dl_task_timer+0xca/0x250 [ 132.613027] [] ? push_dl_task.part.32+0x170/0x170 [ 132.613030] [] __hrtimer_run_queues+0xee/0x270 [ 132.613031] [] hrtimer_interrupt+0xa8/0x190 [ 132.613034] [] local_apic_timer_interrupt+0x38/0x60 [ 132.613035] [] smp_apic_timer_interrupt+0x3d/0x50 [ 132.613037] [] apic_timer_interrupt+0x8c/0xa0 [ 132.613038] [] ? native_safe_halt+0x6/0x10 [ 132.613043] [] default_idle+0x1e/0xd0 [ 132.613044] [] arch_cpu_idle+0xf/0x20 [ 132.613046] [] default_idle_call+0x2a/0x40 [ 132.613047] [] cpu_startup_entry+0x2e7/0x340 [ 132.613048] [] start_secondary+0x155/0x190 [ 132.613049] ---[ end trace f91934d162ce9977 ]--- The warn is the spin_(lock|unlock)_bh(&css_set_lock) in the interrupt context. Converting the spin_lock_bh to spin_lock_irq(save) to avoid this problem - and other problems of sharing a spinlock with an interrupt. Cc: Tejun Heo Cc: Li Zefan Cc: Johannes Weiner Cc: Juri Lelli Cc: Steven Rostedt Cc: cgroups@vger.kernel.org Cc: stable@vger.kernel.org # 4.5+ Cc: linux-kernel@vger.kernel.org Reviewed-by: Rik van Riel Reviewed-by: "Luis Claudio R. Goncalves" Signed-off-by: Daniel Bristot de Oliveira Acked-by: Zefan Li Signed-off-by: Tejun Heo --- kernel/cgroup.c | 142 +++++++++++++++++++++++++++++--------------------------- 1 file changed, 74 insertions(+), 68 deletions(-) diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 688eb0cd1851..75c0ff00aca6 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -837,6 +837,8 @@ static void put_css_set_locked(struct css_set *cset) static void put_css_set(struct css_set *cset) { + unsigned long flags; + /* * Ensure that the refcount doesn't hit zero while any readers * can see it. Similar to atomic_dec_and_lock(), but for an @@ -845,9 +847,9 @@ static void put_css_set(struct css_set *cset) if (atomic_add_unless(&cset->refcount, -1, 1)) return; - spin_lock_bh(&css_set_lock); + spin_lock_irqsave(&css_set_lock, flags); put_css_set_locked(cset); - spin_unlock_bh(&css_set_lock); + spin_unlock_irqrestore(&css_set_lock, flags); } /* @@ -1070,11 +1072,11 @@ static struct css_set *find_css_set(struct css_set *old_cset, /* First see if we already have a cgroup group that matches * the desired set */ - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); cset = find_existing_css_set(old_cset, cgrp, template); if (cset) get_css_set(cset); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); if (cset) return cset; @@ -1102,7 +1104,7 @@ static struct css_set *find_css_set(struct css_set *old_cset, * find_existing_css_set() */ memcpy(cset->subsys, template, sizeof(cset->subsys)); - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); /* Add reference counts and links from the new css_set. */ list_for_each_entry(link, &old_cset->cgrp_links, cgrp_link) { struct cgroup *c = link->cgrp; @@ -1128,7 +1130,7 @@ static struct css_set *find_css_set(struct css_set *old_cset, css_get(css); } - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); return cset; } @@ -1192,7 +1194,7 @@ static void cgroup_destroy_root(struct cgroup_root *root) * Release all the links from cset_links to this hierarchy's * root cgroup */ - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); list_for_each_entry_safe(link, tmp_link, &cgrp->cset_links, cset_link) { list_del(&link->cset_link); @@ -1200,7 +1202,7 @@ static void cgroup_destroy_root(struct cgroup_root *root) kfree(link); } - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); if (!list_empty(&root->root_list)) { list_del(&root->root_list); @@ -1600,11 +1602,11 @@ static int rebind_subsystems(struct cgroup_root *dst_root, u16 ss_mask) ss->root = dst_root; css->cgroup = dcgrp; - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); hash_for_each(css_set_table, i, cset, hlist) list_move_tail(&cset->e_cset_node[ss->id], &dcgrp->e_csets[ss->id]); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); /* default hierarchy doesn't enable controllers by default */ dst_root->subsys_mask |= 1 << ssid; @@ -1640,10 +1642,10 @@ static int cgroup_show_path(struct seq_file *sf, struct kernfs_node *kf_node, if (!buf) return -ENOMEM; - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); ns_cgroup = current_cgns_cgroup_from_root(kf_cgroot); len = kernfs_path_from_node(kf_node, ns_cgroup->kn, buf, PATH_MAX); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); if (len >= PATH_MAX) len = -ERANGE; @@ -1897,7 +1899,7 @@ static void cgroup_enable_task_cg_lists(void) { struct task_struct *p, *g; - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); if (use_task_css_set_links) goto out_unlock; @@ -1922,8 +1924,12 @@ static void cgroup_enable_task_cg_lists(void) * entry won't be deleted though the process has exited. * Do it while holding siglock so that we don't end up * racing against cgroup_exit(). + * + * Interrupts were already disabled while acquiring + * the css_set_lock, so we do not need to disable it + * again when acquiring the sighand->siglock here. */ - spin_lock_irq(&p->sighand->siglock); + spin_lock(&p->sighand->siglock); if (!(p->flags & PF_EXITING)) { struct css_set *cset = task_css_set(p); @@ -1932,11 +1938,11 @@ static void cgroup_enable_task_cg_lists(void) list_add_tail(&p->cg_list, &cset->tasks); get_css_set(cset); } - spin_unlock_irq(&p->sighand->siglock); + spin_unlock(&p->sighand->siglock); } while_each_thread(g, p); read_unlock(&tasklist_lock); out_unlock: - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); } static void init_cgroup_housekeeping(struct cgroup *cgrp) @@ -2043,13 +2049,13 @@ static int cgroup_setup_root(struct cgroup_root *root, u16 ss_mask) * Link the root cgroup in this hierarchy into all the css_set * objects. */ - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); hash_for_each(css_set_table, i, cset, hlist) { link_css_set(&tmp_links, cset, root_cgrp); if (css_set_populated(cset)) cgroup_update_populated(root_cgrp, true); } - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); BUG_ON(!list_empty(&root_cgrp->self.children)); BUG_ON(atomic_read(&root->nr_cgrps) != 1); @@ -2256,11 +2262,11 @@ out_mount: struct cgroup *cgrp; mutex_lock(&cgroup_mutex); - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); cgrp = cset_cgroup_from_root(ns->root_cset, root); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); mutex_unlock(&cgroup_mutex); nsdentry = kernfs_node_dentry(cgrp->kn, dentry->d_sb); @@ -2337,11 +2343,11 @@ char *cgroup_path_ns(struct cgroup *cgrp, char *buf, size_t buflen, char *ret; mutex_lock(&cgroup_mutex); - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); ret = cgroup_path_ns_locked(cgrp, buf, buflen, ns); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); mutex_unlock(&cgroup_mutex); return ret; @@ -2369,7 +2375,7 @@ char *task_cgroup_path(struct task_struct *task, char *buf, size_t buflen) char *path = NULL; mutex_lock(&cgroup_mutex); - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); root = idr_get_next(&cgroup_hierarchy_idr, &hierarchy_id); @@ -2382,7 +2388,7 @@ char *task_cgroup_path(struct task_struct *task, char *buf, size_t buflen) path = buf; } - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); mutex_unlock(&cgroup_mutex); return path; } @@ -2557,7 +2563,7 @@ static int cgroup_taskset_migrate(struct cgroup_taskset *tset, * the new cgroup. There are no failure cases after here, so this * is the commit point. */ - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); list_for_each_entry(cset, &tset->src_csets, mg_node) { list_for_each_entry_safe(task, tmp_task, &cset->mg_tasks, cg_list) { struct css_set *from_cset = task_css_set(task); @@ -2568,7 +2574,7 @@ static int cgroup_taskset_migrate(struct cgroup_taskset *tset, put_css_set_locked(from_cset); } } - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); /* * Migration is committed, all target tasks are now on dst_csets. @@ -2597,13 +2603,13 @@ out_cancel_attach: } } while_each_subsys_mask(); out_release_tset: - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); list_splice_init(&tset->dst_csets, &tset->src_csets); list_for_each_entry_safe(cset, tmp_cset, &tset->src_csets, mg_node) { list_splice_tail_init(&cset->mg_tasks, &cset->tasks); list_del_init(&cset->mg_node); } - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); return ret; } @@ -2634,7 +2640,7 @@ static void cgroup_migrate_finish(struct list_head *preloaded_csets) lockdep_assert_held(&cgroup_mutex); - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); list_for_each_entry_safe(cset, tmp_cset, preloaded_csets, mg_preload_node) { cset->mg_src_cgrp = NULL; cset->mg_dst_cgrp = NULL; @@ -2642,7 +2648,7 @@ static void cgroup_migrate_finish(struct list_head *preloaded_csets) list_del_init(&cset->mg_preload_node); put_css_set_locked(cset); } - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); } /** @@ -2783,7 +2789,7 @@ static int cgroup_migrate(struct task_struct *leader, bool threadgroup, * already PF_EXITING could be freed from underneath us unless we * take an rcu_read_lock. */ - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); rcu_read_lock(); task = leader; do { @@ -2792,7 +2798,7 @@ static int cgroup_migrate(struct task_struct *leader, bool threadgroup, break; } while_each_thread(leader, task); rcu_read_unlock(); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); return cgroup_taskset_migrate(&tset, root); } @@ -2816,7 +2822,7 @@ static int cgroup_attach_task(struct cgroup *dst_cgrp, return -EBUSY; /* look up all src csets */ - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); rcu_read_lock(); task = leader; do { @@ -2826,7 +2832,7 @@ static int cgroup_attach_task(struct cgroup *dst_cgrp, break; } while_each_thread(leader, task); rcu_read_unlock(); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); /* prepare dst csets and commit */ ret = cgroup_migrate_prepare_dst(&preloaded_csets); @@ -2859,9 +2865,9 @@ static int cgroup_procs_write_permission(struct task_struct *task, struct cgroup *cgrp; struct inode *inode; - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); cgrp = task_cgroup_from_root(task, &cgrp_dfl_root); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); while (!cgroup_is_descendant(dst_cgrp, cgrp)) cgrp = cgroup_parent(cgrp); @@ -2962,9 +2968,9 @@ int cgroup_attach_task_all(struct task_struct *from, struct task_struct *tsk) if (root == &cgrp_dfl_root) continue; - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); from_cgrp = task_cgroup_from_root(from, root); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); retval = cgroup_attach_task(from_cgrp, tsk, false); if (retval) @@ -3080,7 +3086,7 @@ static int cgroup_update_dfl_csses(struct cgroup *cgrp) percpu_down_write(&cgroup_threadgroup_rwsem); /* look up all csses currently attached to @cgrp's subtree */ - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { struct cgrp_cset_link *link; @@ -3088,14 +3094,14 @@ static int cgroup_update_dfl_csses(struct cgroup *cgrp) cgroup_migrate_add_src(link->cset, dsct, &preloaded_csets); } - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); /* NULL dst indicates self on default hierarchy */ ret = cgroup_migrate_prepare_dst(&preloaded_csets); if (ret) goto out_finish; - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); list_for_each_entry(src_cset, &preloaded_csets, mg_preload_node) { struct task_struct *task, *ntask; @@ -3107,7 +3113,7 @@ static int cgroup_update_dfl_csses(struct cgroup *cgrp) list_for_each_entry_safe(task, ntask, &src_cset->tasks, cg_list) cgroup_taskset_add(task, &tset); } - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); ret = cgroup_taskset_migrate(&tset, cgrp->root); out_finish: @@ -3908,10 +3914,10 @@ static int cgroup_task_count(const struct cgroup *cgrp) int count = 0; struct cgrp_cset_link *link; - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); list_for_each_entry(link, &cgrp->cset_links, cset_link) count += atomic_read(&link->cset->refcount); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); return count; } @@ -4249,7 +4255,7 @@ void css_task_iter_start(struct cgroup_subsys_state *css, memset(it, 0, sizeof(*it)); - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); it->ss = css->ss; @@ -4262,7 +4268,7 @@ void css_task_iter_start(struct cgroup_subsys_state *css, css_task_iter_advance_css_set(it); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); } /** @@ -4280,7 +4286,7 @@ struct task_struct *css_task_iter_next(struct css_task_iter *it) it->cur_task = NULL; } - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); if (it->task_pos) { it->cur_task = list_entry(it->task_pos, struct task_struct, @@ -4289,7 +4295,7 @@ struct task_struct *css_task_iter_next(struct css_task_iter *it) css_task_iter_advance(it); } - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); return it->cur_task; } @@ -4303,10 +4309,10 @@ struct task_struct *css_task_iter_next(struct css_task_iter *it) void css_task_iter_end(struct css_task_iter *it) { if (it->cur_cset) { - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); list_del(&it->iters_node); put_css_set_locked(it->cur_cset); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); } if (it->cur_task) @@ -4338,10 +4344,10 @@ int cgroup_transfer_tasks(struct cgroup *to, struct cgroup *from) mutex_lock(&cgroup_mutex); /* all tasks in @from are being moved, all csets are source */ - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); list_for_each_entry(link, &from->cset_links, cset_link) cgroup_migrate_add_src(link->cset, to, &preloaded_csets); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); ret = cgroup_migrate_prepare_dst(&preloaded_csets); if (ret) @@ -5449,10 +5455,10 @@ static int cgroup_destroy_locked(struct cgroup *cgrp) */ cgrp->self.flags &= ~CSS_ONLINE; - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); list_for_each_entry(link, &cgrp->cset_links, cset_link) link->cset->dead = true; - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); /* initiate massacre of all css's */ for_each_css(css, ssid, cgrp) @@ -5723,7 +5729,7 @@ int proc_cgroup_show(struct seq_file *m, struct pid_namespace *ns, goto out; mutex_lock(&cgroup_mutex); - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); for_each_root(root) { struct cgroup_subsys *ss; @@ -5776,7 +5782,7 @@ int proc_cgroup_show(struct seq_file *m, struct pid_namespace *ns, retval = 0; out_unlock: - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); mutex_unlock(&cgroup_mutex); kfree(buf); out: @@ -5921,13 +5927,13 @@ void cgroup_post_fork(struct task_struct *child) if (use_task_css_set_links) { struct css_set *cset; - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); cset = task_css_set(current); if (list_empty(&child->cg_list)) { get_css_set(cset); css_set_move_task(child, NULL, cset, false); } - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); } /* @@ -5972,9 +5978,9 @@ void cgroup_exit(struct task_struct *tsk) cset = task_css_set(tsk); if (!list_empty(&tsk->cg_list)) { - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); css_set_move_task(tsk, cset, NULL, false); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); } else { get_css_set(cset); } @@ -6042,9 +6048,9 @@ static void cgroup_release_agent(struct work_struct *work) if (!pathbuf || !agentbuf) goto out; - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); path = cgroup_path_ns_locked(cgrp, pathbuf, PATH_MAX, &init_cgroup_ns); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); if (!path) goto out; @@ -6304,12 +6310,12 @@ struct cgroup_namespace *copy_cgroup_ns(unsigned long flags, return ERR_PTR(-EPERM); mutex_lock(&cgroup_mutex); - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); cset = task_css_set(current); get_css_set(cset); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); mutex_unlock(&cgroup_mutex); new_ns = alloc_cgroup_ns(); @@ -6433,7 +6439,7 @@ static int current_css_set_cg_links_read(struct seq_file *seq, void *v) if (!name_buf) return -ENOMEM; - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); rcu_read_lock(); cset = rcu_dereference(current->cgroups); list_for_each_entry(link, &cset->cgrp_links, cgrp_link) { @@ -6444,7 +6450,7 @@ static int current_css_set_cg_links_read(struct seq_file *seq, void *v) c->root->hierarchy_id, name_buf); } rcu_read_unlock(); - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); kfree(name_buf); return 0; } @@ -6455,7 +6461,7 @@ static int cgroup_css_links_read(struct seq_file *seq, void *v) struct cgroup_subsys_state *css = seq_css(seq); struct cgrp_cset_link *link; - spin_lock_bh(&css_set_lock); + spin_lock_irq(&css_set_lock); list_for_each_entry(link, &css->cgroup->cset_links, cset_link) { struct css_set *cset = link->cset; struct task_struct *task; @@ -6478,7 +6484,7 @@ static int cgroup_css_links_read(struct seq_file *seq, void *v) overflow: seq_puts(seq, " ...\n"); } - spin_unlock_bh(&css_set_lock); + spin_unlock_irq(&css_set_lock); return 0; } -- cgit v1.2.3 From 60842ef8128e7bf58c024814cd0dc14319232b6c Mon Sep 17 00:00:00 2001 From: Sinclair Yeh Date: Thu, 23 Jun 2016 17:37:34 -0700 Subject: Input: vmmouse - remove port reservation The VMWare EFI BIOS will expose port 0x5658 as an ACPI resource. This causes the port to be reserved by the APCI module as the system comes up, making it unavailable to be reserved again by other drivers, thus preserving this VMWare port for special use in a VMWare guest. This port is designed to be shared among multiple VMWare services, such as the VMMOUSE. Because of this, VMMOUSE should not try to reserve this port on its own. The VMWare non-EFI BIOS does not do this to preserve compatibility with existing/legacy VMs. It is known that there is small chance a VM may be configured such that these ports get reserved by other non-VMWare devices, and if this ever happens, the result is undefined. Signed-off-by: Sinclair Yeh Reviewed-by: Thomas Hellstrom Cc: # 4.1- Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/vmmouse.c | 22 ++-------------------- 1 file changed, 2 insertions(+), 20 deletions(-) diff --git a/drivers/input/mouse/vmmouse.c b/drivers/input/mouse/vmmouse.c index a3f0f5a47490..0f586780ceb4 100644 --- a/drivers/input/mouse/vmmouse.c +++ b/drivers/input/mouse/vmmouse.c @@ -355,18 +355,11 @@ int vmmouse_detect(struct psmouse *psmouse, bool set_properties) return -ENXIO; } - if (!request_region(VMMOUSE_PROTO_PORT, 4, "vmmouse")) { - psmouse_dbg(psmouse, "VMMouse port in use.\n"); - return -EBUSY; - } - /* Check if the device is present */ response = ~VMMOUSE_PROTO_MAGIC; VMMOUSE_CMD(GETVERSION, 0, version, response, dummy1, dummy2); - if (response != VMMOUSE_PROTO_MAGIC || version == 0xffffffffU) { - release_region(VMMOUSE_PROTO_PORT, 4); + if (response != VMMOUSE_PROTO_MAGIC || version == 0xffffffffU) return -ENXIO; - } if (set_properties) { psmouse->vendor = VMMOUSE_VENDOR; @@ -374,8 +367,6 @@ int vmmouse_detect(struct psmouse *psmouse, bool set_properties) psmouse->model = version; } - release_region(VMMOUSE_PROTO_PORT, 4); - return 0; } @@ -394,7 +385,6 @@ static void vmmouse_disconnect(struct psmouse *psmouse) psmouse_reset(psmouse); input_unregister_device(priv->abs_dev); kfree(priv); - release_region(VMMOUSE_PROTO_PORT, 4); } /** @@ -438,15 +428,10 @@ int vmmouse_init(struct psmouse *psmouse) struct input_dev *rel_dev = psmouse->dev, *abs_dev; int error; - if (!request_region(VMMOUSE_PROTO_PORT, 4, "vmmouse")) { - psmouse_dbg(psmouse, "VMMouse port in use.\n"); - return -EBUSY; - } - psmouse_reset(psmouse); error = vmmouse_enable(psmouse); if (error) - goto release_region; + return error; priv = kzalloc(sizeof(*priv), GFP_KERNEL); abs_dev = input_allocate_device(); @@ -502,8 +487,5 @@ init_fail: kfree(priv); psmouse->private = NULL; -release_region: - release_region(VMMOUSE_PROTO_PORT, 4); - return error; } -- cgit v1.2.3 From 1ee6667cd8d183b2fed12f97285f184431d2caf9 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Thu, 23 Jun 2016 17:50:39 -0700 Subject: libnvdimm, pfn, dax: fix initialization vs autodetect for mode + alignment The updated ndctl unit tests discovered that if a pfn configuration with a 4K alignment is read from the namespace, that alignment will be ignored in favor of the default 2M alignment. The result is that the configuration will fail initialization with a message like: dax6.1: bad offset: 0x22000 dax disabled align: 0x200000 Fix this by allowing the alignment read from the info block to override the default which is 2M not 0 in the autodetect path. This also fixes a similar problem with the mode and alignment settings silently being overwritten by the kernel when userspace has changed it. We now will either overwrite the info block if userspace changes the uuid or fail and warn if a live setting disagrees with the info block. Cc: Cc: Micah Parrish Cc: Toshi Kani Signed-off-by: Dan Williams --- drivers/nvdimm/pfn_devs.c | 51 +++++++++++++++++++++++++++++++++++++---------- 1 file changed, 40 insertions(+), 11 deletions(-) diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c index f7718ec685fa..cea8350fbc7e 100644 --- a/drivers/nvdimm/pfn_devs.c +++ b/drivers/nvdimm/pfn_devs.c @@ -344,6 +344,8 @@ struct device *nd_pfn_create(struct nd_region *nd_region) int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) { u64 checksum, offset; + unsigned long align; + enum nd_pfn_mode mode; struct nd_namespace_io *nsio; struct nd_pfn_sb *pfn_sb = nd_pfn->pfn_sb; struct nd_namespace_common *ndns = nd_pfn->ndns; @@ -386,22 +388,50 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) return -ENXIO; } + align = le32_to_cpu(pfn_sb->align); + offset = le64_to_cpu(pfn_sb->dataoff); + if (align == 0) + align = 1UL << ilog2(offset); + mode = le32_to_cpu(pfn_sb->mode); + if (!nd_pfn->uuid) { - /* from probe we allocate */ + /* + * When probing a namepace via nd_pfn_probe() the uuid + * is NULL (see: nd_pfn_devinit()) we init settings from + * pfn_sb + */ nd_pfn->uuid = kmemdup(pfn_sb->uuid, 16, GFP_KERNEL); if (!nd_pfn->uuid) return -ENOMEM; + nd_pfn->align = align; + nd_pfn->mode = mode; } else { - /* from init we validate */ + /* + * When probing a pfn / dax instance we validate the + * live settings against the pfn_sb + */ if (memcmp(nd_pfn->uuid, pfn_sb->uuid, 16) != 0) return -ENODEV; + + /* + * If the uuid validates, but other settings mismatch + * return EINVAL because userspace has managed to change + * the configuration without specifying new + * identification. + */ + if (nd_pfn->align != align || nd_pfn->mode != mode) { + dev_err(&nd_pfn->dev, + "init failed, settings mismatch\n"); + dev_dbg(&nd_pfn->dev, "align: %lx:%lx mode: %d:%d\n", + nd_pfn->align, align, nd_pfn->mode, + mode); + return -EINVAL; + } } - if (nd_pfn->align == 0) - nd_pfn->align = le32_to_cpu(pfn_sb->align); - if (nd_pfn->align > nvdimm_namespace_capacity(ndns)) { + if (align > nvdimm_namespace_capacity(ndns)) { dev_err(&nd_pfn->dev, "alignment: %lx exceeds capacity %llx\n", - nd_pfn->align, nvdimm_namespace_capacity(ndns)); + align, nvdimm_namespace_capacity(ndns)); return -EINVAL; } @@ -411,7 +441,6 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) * namespace has changed since the pfn superblock was * established. */ - offset = le64_to_cpu(pfn_sb->dataoff); nsio = to_nd_namespace_io(&ndns->dev); if (offset >= resource_size(&nsio->res)) { dev_err(&nd_pfn->dev, "pfn array size exceeds capacity of %s\n", @@ -419,10 +448,11 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) return -EBUSY; } - if ((nd_pfn->align && !IS_ALIGNED(offset, nd_pfn->align)) + if ((align && !IS_ALIGNED(offset, align)) || !IS_ALIGNED(offset, PAGE_SIZE)) { - dev_err(&nd_pfn->dev, "bad offset: %#llx dax disabled\n", - offset); + dev_err(&nd_pfn->dev, + "bad offset: %#llx dax disabled align: %#lx\n", + offset, align); return -ENXIO; } @@ -502,7 +532,6 @@ static struct vmem_altmap *__nvdimm_setup_pfn(struct nd_pfn *nd_pfn, res->start += start_pad; res->end -= end_trunc; - nd_pfn->mode = le32_to_cpu(nd_pfn->pfn_sb->mode); if (nd_pfn->mode == PFN_MODE_RAM) { if (offset < SZ_8K) return ERR_PTR(-EINVAL); -- cgit v1.2.3 From 3d22462ae915743f3be5bf1ab3d4a6b72c2bb6c9 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 24 May 2016 06:27:44 -0400 Subject: cifs: stuff the fl_owner into "pid" field in the lock request Right now, we send the tgid cross the wire. What we really want to send though is a hashed fl_owner_t since samba treats this field as a generic lockowner. It turns out that because we enforce and release locks locally before they are ever sent to the server, this patch makes no difference in behavior. Still, setting OFD locks on the server using the process pid seems wrong, so I think this patch still makes sense. Signed-off-by: Jeff Layton Signed-off-by: Steve French Acked-by: Pavel Shilovsky Acked-by: Sachin Prabhu --- fs/cifs/cifsfs.c | 3 +++ fs/cifs/cifsglob.h | 1 + fs/cifs/file.c | 14 +++++++++++--- 3 files changed, 15 insertions(+), 3 deletions(-) diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 5d8b7edf8a8f..5d841f39c4b7 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -87,6 +87,7 @@ extern mempool_t *cifs_req_poolp; extern mempool_t *cifs_mid_poolp; struct workqueue_struct *cifsiod_wq; +__u32 cifs_lock_secret; /* * Bumps refcount for cifs super block. @@ -1266,6 +1267,8 @@ init_cifs(void) spin_lock_init(&cifs_file_list_lock); spin_lock_init(&GlobalMid_Lock); + get_random_bytes(&cifs_lock_secret, sizeof(cifs_lock_secret)); + if (cifs_max_pending < 2) { cifs_max_pending = 2; cifs_dbg(FYI, "cifs_max_pending set to min of 2\n"); diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index bba106cdc43c..8f1d8c1e72be 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -1619,6 +1619,7 @@ void cifs_oplock_break(struct work_struct *work); extern const struct slow_work_ops cifs_oplock_break_ops; extern struct workqueue_struct *cifsiod_wq; +extern __u32 cifs_lock_secret; extern mempool_t *cifs_mid_poolp; diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 9793ae0bcaa2..d4890b6dc22d 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1112,6 +1112,12 @@ cifs_push_mandatory_locks(struct cifsFileInfo *cfile) return rc; } +static __u32 +hash_lockowner(fl_owner_t owner) +{ + return cifs_lock_secret ^ hash32_ptr((const void *)owner); +} + struct lock_to_push { struct list_head llist; __u64 offset; @@ -1178,7 +1184,7 @@ cifs_push_posix_locks(struct cifsFileInfo *cfile) else type = CIFS_WRLCK; lck = list_entry(el, struct lock_to_push, llist); - lck->pid = flock->fl_pid; + lck->pid = hash_lockowner(flock->fl_owner); lck->netfid = cfile->fid.netfid; lck->length = length; lck->type = type; @@ -1305,7 +1311,8 @@ cifs_getlk(struct file *file, struct file_lock *flock, __u32 type, posix_lock_type = CIFS_RDLCK; else posix_lock_type = CIFS_WRLCK; - rc = CIFSSMBPosixLock(xid, tcon, netfid, current->tgid, + rc = CIFSSMBPosixLock(xid, tcon, netfid, + hash_lockowner(flock->fl_owner), flock->fl_start, length, flock, posix_lock_type, wait_flag); return rc; @@ -1505,7 +1512,8 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u32 type, posix_lock_type = CIFS_UNLCK; rc = CIFSSMBPosixLock(xid, tcon, cfile->fid.netfid, - current->tgid, flock->fl_start, length, + hash_lockowner(flock->fl_owner), + flock->fl_start, length, NULL, posix_lock_type, wait_flag); goto out; } -- cgit v1.2.3 From 202d772ba02b1deb8835a631cd8255943d1906a0 Mon Sep 17 00:00:00 2001 From: Jerome Marchand Date: Thu, 26 May 2016 11:52:24 +0200 Subject: cifs: use CIFS_MAX_DOMAINNAME_LEN when converting the domain name Currently in build_ntlmssp_auth_blob(), when converting the domain name to UTF16, CIFS_MAX_USERNAME_LEN limit is used. It should be CIFS_MAX_DOMAINNAME_LEN. This patch fixes this. Signed-off-by: Jerome Marchand Signed-off-by: Steve French --- fs/cifs/sess.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c index af0ec2d5ad0e..c3d086e2bd56 100644 --- a/fs/cifs/sess.c +++ b/fs/cifs/sess.c @@ -430,7 +430,7 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer, } else { int len; len = cifs_strtoUTF16((__le16 *)tmp, ses->domainName, - CIFS_MAX_USERNAME_LEN, nls_cp); + CIFS_MAX_DOMAINNAME_LEN, nls_cp); len *= 2; /* unicode is 2 bytes each */ sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer); sec_blob->DomainName.Length = cpu_to_le16(len); -- cgit v1.2.3 From b8da344b74c822e966c6d19d6b2321efe82c5d97 Mon Sep 17 00:00:00 2001 From: Jerome Marchand Date: Thu, 26 May 2016 11:52:25 +0200 Subject: cifs: dynamic allocation of ntlmssp blob In sess_auth_rawntlmssp_authenticate(), the ntlmssp blob is allocated statically and its size is an "empirical" 5*sizeof(struct _AUTHENTICATE_MESSAGE) (320B on x86_64). I don't know where this value comes from or if it was ever appropriate, but it is currently insufficient: the user and domain name in UTF16 could take 1kB by themselves. Because of that, build_ntlmssp_auth_blob() might corrupt memory (out-of-bounds write). The size of ntlmssp_blob in SMB2_sess_setup() is too small too (sizeof(struct _NEGOTIATE_MESSAGE) + 500). This patch allocates the blob dynamically in build_ntlmssp_auth_blob(). Signed-off-by: Jerome Marchand Signed-off-by: Steve French CC: Stable --- fs/cifs/ntlmssp.h | 2 +- fs/cifs/sess.c | 76 ++++++++++++++++++++++++++++++------------------------- fs/cifs/smb2pdu.c | 10 ++------ 3 files changed, 45 insertions(+), 43 deletions(-) diff --git a/fs/cifs/ntlmssp.h b/fs/cifs/ntlmssp.h index 848249fa120f..3079b38f0afb 100644 --- a/fs/cifs/ntlmssp.h +++ b/fs/cifs/ntlmssp.h @@ -133,6 +133,6 @@ typedef struct _AUTHENTICATE_MESSAGE { int decode_ntlmssp_challenge(char *bcc_ptr, int blob_len, struct cifs_ses *ses); void build_ntlmssp_negotiate_blob(unsigned char *pbuffer, struct cifs_ses *ses); -int build_ntlmssp_auth_blob(unsigned char *pbuffer, u16 *buflen, +int build_ntlmssp_auth_blob(unsigned char **pbuffer, u16 *buflen, struct cifs_ses *ses, const struct nls_table *nls_cp); diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c index c3d086e2bd56..a42e99c8e00e 100644 --- a/fs/cifs/sess.c +++ b/fs/cifs/sess.c @@ -364,19 +364,43 @@ void build_ntlmssp_negotiate_blob(unsigned char *pbuffer, sec_blob->DomainName.MaximumLength = 0; } -/* We do not malloc the blob, it is passed in pbuffer, because its - maximum possible size is fixed and small, making this approach cleaner. - This function returns the length of the data in the blob */ -int build_ntlmssp_auth_blob(unsigned char *pbuffer, +static int size_of_ntlmssp_blob(struct cifs_ses *ses) +{ + int sz = sizeof(AUTHENTICATE_MESSAGE) + ses->auth_key.len + - CIFS_SESS_KEY_SIZE + CIFS_CPHTXT_SIZE + 2; + + if (ses->domainName) + sz += 2 * strnlen(ses->domainName, CIFS_MAX_DOMAINNAME_LEN); + else + sz += 2; + + if (ses->user_name) + sz += 2 * strnlen(ses->user_name, CIFS_MAX_USERNAME_LEN); + else + sz += 2; + + return sz; +} + +int build_ntlmssp_auth_blob(unsigned char **pbuffer, u16 *buflen, struct cifs_ses *ses, const struct nls_table *nls_cp) { int rc; - AUTHENTICATE_MESSAGE *sec_blob = (AUTHENTICATE_MESSAGE *)pbuffer; + AUTHENTICATE_MESSAGE *sec_blob; __u32 flags; unsigned char *tmp; + rc = setup_ntlmv2_rsp(ses, nls_cp); + if (rc) { + cifs_dbg(VFS, "Error %d during NTLMSSP authentication\n", rc); + *buflen = 0; + goto setup_ntlmv2_ret; + } + *pbuffer = kmalloc(size_of_ntlmssp_blob(ses), GFP_KERNEL); + sec_blob = (AUTHENTICATE_MESSAGE *)*pbuffer; + memcpy(sec_blob->Signature, NTLMSSP_SIGNATURE, 8); sec_blob->MessageType = NtLmAuthenticate; @@ -391,7 +415,7 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer, flags |= NTLMSSP_NEGOTIATE_KEY_XCH; } - tmp = pbuffer + sizeof(AUTHENTICATE_MESSAGE); + tmp = *pbuffer + sizeof(AUTHENTICATE_MESSAGE); sec_blob->NegotiateFlags = cpu_to_le32(flags); sec_blob->LmChallengeResponse.BufferOffset = @@ -399,13 +423,9 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer, sec_blob->LmChallengeResponse.Length = 0; sec_blob->LmChallengeResponse.MaximumLength = 0; - sec_blob->NtChallengeResponse.BufferOffset = cpu_to_le32(tmp - pbuffer); + sec_blob->NtChallengeResponse.BufferOffset = + cpu_to_le32(tmp - *pbuffer); if (ses->user_name != NULL) { - rc = setup_ntlmv2_rsp(ses, nls_cp); - if (rc) { - cifs_dbg(VFS, "Error %d during NTLMSSP authentication\n", rc); - goto setup_ntlmv2_ret; - } memcpy(tmp, ses->auth_key.response + CIFS_SESS_KEY_SIZE, ses->auth_key.len - CIFS_SESS_KEY_SIZE); tmp += ses->auth_key.len - CIFS_SESS_KEY_SIZE; @@ -423,7 +443,7 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer, } if (ses->domainName == NULL) { - sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer); + sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - *pbuffer); sec_blob->DomainName.Length = 0; sec_blob->DomainName.MaximumLength = 0; tmp += 2; @@ -432,14 +452,14 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer, len = cifs_strtoUTF16((__le16 *)tmp, ses->domainName, CIFS_MAX_DOMAINNAME_LEN, nls_cp); len *= 2; /* unicode is 2 bytes each */ - sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer); + sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - *pbuffer); sec_blob->DomainName.Length = cpu_to_le16(len); sec_blob->DomainName.MaximumLength = cpu_to_le16(len); tmp += len; } if (ses->user_name == NULL) { - sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer); + sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - *pbuffer); sec_blob->UserName.Length = 0; sec_blob->UserName.MaximumLength = 0; tmp += 2; @@ -448,13 +468,13 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer, len = cifs_strtoUTF16((__le16 *)tmp, ses->user_name, CIFS_MAX_USERNAME_LEN, nls_cp); len *= 2; /* unicode is 2 bytes each */ - sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer); + sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - *pbuffer); sec_blob->UserName.Length = cpu_to_le16(len); sec_blob->UserName.MaximumLength = cpu_to_le16(len); tmp += len; } - sec_blob->WorkstationName.BufferOffset = cpu_to_le32(tmp - pbuffer); + sec_blob->WorkstationName.BufferOffset = cpu_to_le32(tmp - *pbuffer); sec_blob->WorkstationName.Length = 0; sec_blob->WorkstationName.MaximumLength = 0; tmp += 2; @@ -463,19 +483,19 @@ int build_ntlmssp_auth_blob(unsigned char *pbuffer, (ses->ntlmssp->server_flags & NTLMSSP_NEGOTIATE_EXTENDED_SEC)) && !calc_seckey(ses)) { memcpy(tmp, ses->ntlmssp->ciphertext, CIFS_CPHTXT_SIZE); - sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - pbuffer); + sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - *pbuffer); sec_blob->SessionKey.Length = cpu_to_le16(CIFS_CPHTXT_SIZE); sec_blob->SessionKey.MaximumLength = cpu_to_le16(CIFS_CPHTXT_SIZE); tmp += CIFS_CPHTXT_SIZE; } else { - sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - pbuffer); + sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - *pbuffer); sec_blob->SessionKey.Length = 0; sec_blob->SessionKey.MaximumLength = 0; } + *buflen = tmp - *pbuffer; setup_ntlmv2_ret: - *buflen = tmp - pbuffer; return rc; } @@ -1266,7 +1286,7 @@ sess_auth_rawntlmssp_authenticate(struct sess_data *sess_data) struct cifs_ses *ses = sess_data->ses; __u16 bytes_remaining; char *bcc_ptr; - char *ntlmsspblob = NULL; + unsigned char *ntlmsspblob = NULL; u16 blob_len; cifs_dbg(FYI, "rawntlmssp session setup authenticate phase\n"); @@ -1279,19 +1299,7 @@ sess_auth_rawntlmssp_authenticate(struct sess_data *sess_data) /* Build security blob before we assemble the request */ pSMB = (SESSION_SETUP_ANDX *)sess_data->iov[0].iov_base; smb_buf = (struct smb_hdr *)pSMB; - /* - * 5 is an empirical value, large enough to hold - * authenticate message plus max 10 of av paris, - * domain, user, workstation names, flags, etc. - */ - ntlmsspblob = kzalloc(5*sizeof(struct _AUTHENTICATE_MESSAGE), - GFP_KERNEL); - if (!ntlmsspblob) { - rc = -ENOMEM; - goto out; - } - - rc = build_ntlmssp_auth_blob(ntlmsspblob, + rc = build_ntlmssp_auth_blob(&ntlmsspblob, &blob_len, ses, sess_data->nls_cp); if (rc) goto out_free_ntlmsspblob; diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 8f38e33d365b..c3e61a7a7c7c 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -588,7 +588,7 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses, u16 blob_length = 0; struct key *spnego_key = NULL; char *security_blob = NULL; - char *ntlmssp_blob = NULL; + unsigned char *ntlmssp_blob = NULL; bool use_spnego = false; /* else use raw ntlmssp */ cifs_dbg(FYI, "Session Setup\n"); @@ -713,13 +713,7 @@ ssetup_ntlmssp_authenticate: iov[1].iov_len = blob_length; } else if (phase == NtLmAuthenticate) { req->hdr.SessionId = ses->Suid; - ntlmssp_blob = kzalloc(sizeof(struct _NEGOTIATE_MESSAGE) + 500, - GFP_KERNEL); - if (ntlmssp_blob == NULL) { - rc = -ENOMEM; - goto ssetup_exit; - } - rc = build_ntlmssp_auth_blob(ntlmssp_blob, &blob_length, ses, + rc = build_ntlmssp_auth_blob(&ntlmssp_blob, &blob_length, ses, nls_cp); if (rc) { cifs_dbg(FYI, "build_ntlmssp_auth_blob failed %d\n", -- cgit v1.2.3 From a6b6befbb2806697461962edb044e3376a771ebb Mon Sep 17 00:00:00 2001 From: Luis de Bethencourt Date: Wed, 8 Jun 2016 17:02:32 +0100 Subject: cifs: check hash calculating succeeded calc_lanman_hash() could return -ENOMEM or other errors, we should check that everything went fine before using the calculated key. Signed-off-by: Luis de Bethencourt Signed-off-by: Steve French --- fs/cifs/sess.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c index a42e99c8e00e..538d9b55699a 100644 --- a/fs/cifs/sess.c +++ b/fs/cifs/sess.c @@ -710,6 +710,8 @@ sess_auth_lanman(struct sess_data *sess_data) rc = calc_lanman_hash(ses->password, ses->server->cryptkey, ses->server->sec_mode & SECMODE_PW_ENCRYPT ? true : false, lnm_session_key); + if (rc) + goto out; memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_AUTH_RESP_SIZE); bcc_ptr += CIFS_AUTH_RESP_SIZE; -- cgit v1.2.3 From bc23676caf54c9b6e2521ef065dfddf6c50211de Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Jun 2016 16:48:18 -0400 Subject: NFSv4.1/pnfs: Ensure we handle delegation errors in nfs4_proc_layoutget() nfs4_handle_exception() relies on the caller setting the 'inode' field in the struct nfs4_exception argument when the error applies to a delegation. Signed-off-by: Trond Myklebust Reviewed-by: Jeff Layton Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index de97567795a5..27fe63b502d5 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -8036,7 +8036,10 @@ nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags) .flags = RPC_TASK_ASYNC, }; struct pnfs_layout_segment *lseg = NULL; - struct nfs4_exception exception = { .timeout = *timeout }; + struct nfs4_exception exception = { + .inode = inode, + .timeout = *timeout, + }; int status = 0; dprintk("--> %s\n", __func__); -- cgit v1.2.3 From 67a3b721462c9b3bdc36ad6a583f41706402b3ea Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Jun 2016 16:48:19 -0400 Subject: NFSv4.1/pnfs: Layout stateids start out as being invalid Signed-off-by: Trond Myklebust Reviewed-by: Jeff Layton Signed-off-by: Anna Schumaker --- fs/nfs/pnfs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 0c7e0d45a4de..f619139621ec 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1290,6 +1290,7 @@ alloc_init_layout_hdr(struct inode *ino, INIT_LIST_HEAD(&lo->plh_bulk_destroy); lo->plh_inode = ino; lo->plh_lc_cred = get_rpccred(ctx->cred); + lo->plh_flags |= 1 << NFS_LAYOUT_INVALID_STID; return lo; } @@ -1565,8 +1566,7 @@ lookup_again: * stateid, or it has been invalidated, then we must use the open * stateid. */ - if (lo->plh_stateid.seqid == 0 || - test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags)) { + if (test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags)) { /* * The first layoutget for the file. Need to serialize per -- cgit v1.2.3 From e5241e43883058b61a955b4bbd677fe4ffd3ae4e Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Jun 2016 16:48:20 -0400 Subject: NFSv4.1/pnfs: Add sparse lock annotations for pnfs_find_alloc_layout Signed-off-by: Trond Myklebust Reviewed-by: Jeff Layton Signed-off-by: Anna Schumaker --- fs/nfs/pnfs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index f619139621ec..ca488b52cbfb 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1298,6 +1298,8 @@ static struct pnfs_layout_hdr * pnfs_find_alloc_layout(struct inode *ino, struct nfs_open_context *ctx, gfp_t gfp_flags) + __releases(&ino->i_lock) + __acquires(&ino->i_lock) { struct nfs_inode *nfsi = NFS_I(ino); struct pnfs_layout_hdr *new = NULL; -- cgit v1.2.3 From dd1beb3d16f6a10683b84b89a4644065c43910f3 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Jun 2016 16:48:21 -0400 Subject: NFS/pnfs: handle bad delegation stateids in nfs4_layoutget_handle_exception We must call nfs4_handle_exception() on BAD_STATEID errors. The only exception is if the stateid argument turns out to be a layout stateid that is declared invalid. Signed-off-by: Trond Myklebust Reviewed-by: Jeff Layton Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 27fe63b502d5..406dd3eb68e2 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -7924,8 +7924,8 @@ nfs4_layoutget_handle_exception(struct rpc_task *task, break; } lo = NFS_I(inode)->layout; - if (lo && nfs4_stateid_match(&lgp->args.stateid, - &lo->plh_stateid)) { + if (lo && !test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) && + nfs4_stateid_match_other(&lgp->args.stateid, &lo->plh_stateid)) { LIST_HEAD(head); /* @@ -7936,10 +7936,10 @@ nfs4_layoutget_handle_exception(struct rpc_task *task, pnfs_mark_matching_lsegs_invalid(lo, &head, NULL, 0); spin_unlock(&inode->i_lock); pnfs_free_lseg_list(&head); + status = -EAGAIN; + goto out; } else spin_unlock(&inode->i_lock); - status = -EAGAIN; - goto out; } status = nfs4_handle_exception(server, status, exception); -- cgit v1.2.3 From d2a7de0b34cd255f23d4b7a7f065677f4b1c15f2 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Jun 2016 16:48:22 -0400 Subject: NFS: Fix up O_DIRECT results if we read or wrote something, we must report it Signed-off-by: Trond Myklebust Reviewed-by: Jeff Layton Signed-off-by: Anna Schumaker --- fs/nfs/direct.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 979b3c4dee6a..c7326c2af2c3 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -353,10 +353,12 @@ static ssize_t nfs_direct_wait(struct nfs_direct_req *dreq) result = wait_for_completion_killable(&dreq->completion); + if (!result) { + result = dreq->count; + WARN_ON_ONCE(dreq->count < 0); + } if (!result) result = dreq->error; - if (!result) - result = dreq->count; out: return (ssize_t) result; @@ -386,8 +388,10 @@ static void nfs_direct_complete(struct nfs_direct_req *dreq, bool write) if (dreq->iocb) { long res = (long) dreq->error; - if (!res) + if (dreq->count != 0) { res = (long) dreq->count; + WARN_ON_ONCE(dreq->count < 0); + } dreq->iocb->ki_complete(dreq->iocb, res, 0); } -- cgit v1.2.3 From cea7f829d3ea6e87a67220bc417260b858e278ff Mon Sep 17 00:00:00 2001 From: Oleg Drokin Date: Fri, 17 Jun 2016 16:48:23 -0400 Subject: nfs4: Fix potential use after free of state in nfs4_do_reclaim. Commit e8d975e73e5f ("fixing infinite OPEN loop in 4.0 stateid recovery") introduced access to state after it was just potentially freed by nfs4_put_open_state leading to a random data corruption somewhere. BUG: unable to handle kernel paging request at ffff88004941ee40 IP: [] nfs4_do_reclaim+0x461/0x740 PGD 3501067 PUD 3504067 PMD 6ff37067 PTE 800000004941e060 Oops: 0002 [#1] SMP DEBUG_PAGEALLOC Modules linked in: loop rpcsec_gss_krb5 acpi_cpufreq tpm_tis joydev i2c_piix4 pcspkr tpm virtio_console nfsd ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops floppy serio_raw virtio_blk drm CPU: 6 PID: 2161 Comm: 192.168.10.253- Not tainted 4.7.0-rc1-vm-nfs+ #112 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 task: ffff8800463dcd00 ti: ffff88003ff48000 task.ti: ffff88003ff48000 RIP: 0010:[] [] nfs4_do_reclaim+0x461/0x740 RSP: 0018:ffff88003ff4bd68 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffffff81a49900 RCX: 00000000000000e8 RDX: 00000000000000e8 RSI: ffff8800418b9930 RDI: ffff880040c96c88 RBP: ffff88003ff4bdf8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff880040c96c98 R13: ffff88004941ee20 R14: ffff88004941ee40 R15: ffff88004941ee00 FS: 0000000000000000(0000) GS:ffff88006d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88004941ee40 CR3: 0000000060b0b000 CR4: 00000000000006e0 Stack: ffffffff813baad5 ffff8800463dcd00 ffff880000000001 ffffffff810e6b68 ffff880043ddbc88 ffff8800418b9800 ffff8800418b98c8 ffff88004941ee48 ffff880040c96c90 ffff880040c96c00 ffff880040c96c20 ffff880040c96c40 Call Trace: [] ? nfs4_do_reclaim+0x35/0x740 [] ? trace_hardirqs_on_caller+0x128/0x1b0 [] nfs4_run_state_manager+0x5ed/0xa40 [] ? nfs4_do_reclaim+0x740/0x740 [] ? nfs4_do_reclaim+0x740/0x740 [] kthread+0x101/0x120 [] ? trace_hardirqs_on_caller+0x128/0x1b0 [] ret_from_fork+0x1f/0x40 [] ? kthread_create_on_node+0x250/0x250 Code: 65 80 4c 8b b5 78 ff ff ff e8 fc 88 4c 00 48 8b 7d 88 e8 13 67 d2 ff 49 8b 47 40 a8 02 0f 84 d3 01 00 00 4c 89 ff e8 7f f9 ff ff 41 80 26 7f 48 8b 7d c8 e8 b1 84 4c 00 e9 39 fd ff ff 3d e6 RIP [] nfs4_do_reclaim+0x461/0x740 RSP CR2: ffff88004941ee40 Signed-off-by: Oleg Drokin Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/nfs4state.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 9679f4749364..834b875900d6 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1488,9 +1488,9 @@ restart: } spin_unlock(&state->state_lock); } - nfs4_put_open_state(state); clear_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags); + nfs4_put_open_state(state); spin_lock(&sp->so_lock); goto restart; } -- cgit v1.2.3 From 5e3a98883e7ebdd1440f829a9e9dd5c3d2c5903b Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Fri, 17 Jun 2016 16:48:24 -0400 Subject: pnfs_nfs: fix _cancel_empty_pagelist pnfs_generic_commit_cancel_empty_pagelist calls nfs_commitdata_release, but that is wrong: nfs_commitdata_release puts the open context, something that isn't valid until nfs_init_commit is called, which is never the case when pnfs_generic_commit_cancel_empty_pagelist is called. This was introduced in "nfs: avoid race that crashes nfs_init_commit". Signed-off-by: Weston Andros Adamson Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/pnfs_nfs.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/fs/nfs/pnfs_nfs.c b/fs/nfs/pnfs_nfs.c index 0dfc476da3e1..b38e3c0dc790 100644 --- a/fs/nfs/pnfs_nfs.c +++ b/fs/nfs/pnfs_nfs.c @@ -247,7 +247,11 @@ void pnfs_fetch_commit_bucket_list(struct list_head *pages, } /* Helper function for pnfs_generic_commit_pagelist to catch an empty - * page list. This can happen when two commits race. */ + * page list. This can happen when two commits race. + * + * This must be called instead of nfs_init_commit - call one or the other, but + * not both! + */ static bool pnfs_generic_commit_cancel_empty_pagelist(struct list_head *pages, struct nfs_commit_data *data, @@ -256,7 +260,11 @@ pnfs_generic_commit_cancel_empty_pagelist(struct list_head *pages, if (list_empty(pages)) { if (atomic_dec_and_test(&cinfo->mds->rpcs_out)) wake_up_atomic_t(&cinfo->mds->rpcs_out); - nfs_commitdata_release(data); + /* don't call nfs_commitdata_release - it tries to put + * the open_context which is not acquired until nfs_init_commit + * which has not been called on @data */ + WARN_ON_ONCE(data->context); + nfs_commit_free(data); return true; } -- cgit v1.2.3 From cbebaf897e5c4862567eb799dc84acc5d7ee2678 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Jun 2016 16:48:25 -0400 Subject: NFS: Fix a double page unlock Since commit 0bcbf039f6b2, nfs_readpage_release() has been used to unlock the page in the read code. Fixes: 0bcbf039f6b2 ("nfs: handle request add failure properly") Cc: stable@vger.kernel.org # v4.5+ Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/read.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 6776d7a7839e..572e5b3b06f1 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -367,13 +367,13 @@ readpage_async_filler(void *data, struct page *page) nfs_list_remove_request(new); nfs_readpage_release(new); error = desc->pgio->pg_error; - goto out_unlock; + goto out; } return 0; out_error: error = PTR_ERR(new); -out_unlock: unlock_page(page); +out: return error; } -- cgit v1.2.3 From 2d148c7e84962429a79092a56d3736a8d984f595 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Jun 2016 16:48:26 -0400 Subject: NFSv4.1/pnfs: Mark the layout stateid invalid when all segments are removed According to RFC5661, section 12.5.3. the layout stateid is no longer valid once the client no longer holds any layout segments. Ensure that we mark it invalid. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/pnfs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index ca488b52cbfb..0fbe734cc38c 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -361,8 +361,10 @@ pnfs_layout_remove_lseg(struct pnfs_layout_hdr *lo, list_del_init(&lseg->pls_list); /* Matched by pnfs_get_layout_hdr in pnfs_layout_insert_lseg */ atomic_dec(&lo->plh_refcount); - if (list_empty(&lo->plh_segs)) + if (list_empty(&lo->plh_segs)) { + set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); clear_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags); + } rpc_wake_up(&NFS_SERVER(inode)->roc_rpcwaitq); } -- cgit v1.2.3 From d8fdb47fae5febc02e62da121f85625244b98b2e Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Jun 2016 16:48:27 -0400 Subject: NFS: Don't let readdirplus revalidate an inode that was marked as stale Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/dir.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index aaf7bd0cbae2..a924d66b5608 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -424,12 +424,17 @@ static int xdr_decode(nfs_readdir_descriptor_t *desc, static int nfs_same_file(struct dentry *dentry, struct nfs_entry *entry) { + struct inode *inode; struct nfs_inode *nfsi; if (d_really_is_negative(dentry)) return 0; - nfsi = NFS_I(d_inode(dentry)); + inode = d_inode(dentry); + if (is_bad_inode(inode) || NFS_STALE(inode)) + return 0; + + nfsi = NFS_I(inode); if (entry->fattr->fileid == nfsi->fileid) return 1; if (nfs_compare_fh(entry->fh, &nfsi->fh) == 0) -- cgit v1.2.3 From 916ec34d0bafe95b977908acd8b3153c9df6f9d6 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Jun 2016 16:48:28 -0400 Subject: NFS: Fix potential race in nfs_fhget() If we don't set the mode correctly in nfs_init_locked(), then there is potential for a race with a second call to nfs_fhget that will cause inode aliasing. Signed-off-by: Trond Myklebust Reviewed-by: Jeff Layton Signed-off-by: Anna Schumaker --- fs/nfs/inode.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 52e7d6869e3b..dda689d7a8a7 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -282,6 +282,7 @@ nfs_init_locked(struct inode *inode, void *opaque) struct nfs_fattr *fattr = desc->fattr; set_nfs_fileid(inode, fattr->fileid); + inode->i_mode = fattr->mode; nfs_copy_fh(NFS_FH(inode), desc->fh); return 0; } -- cgit v1.2.3 From 1b982ea2ca398bdaeab6cf2aba459a9ca808f1f3 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Jun 2016 16:48:29 -0400 Subject: NFS: Fix an unused variable warning Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/dir.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index a924d66b5608..2817cce7a9f4 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1368,7 +1368,6 @@ EXPORT_SYMBOL_GPL(nfs_dentry_operations); struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned int flags) { struct dentry *res; - struct dentry *parent; struct inode *inode = NULL; struct nfs_fh *fhandle = NULL; struct nfs_fattr *fattr = NULL; @@ -1398,7 +1397,6 @@ struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned in if (IS_ERR(label)) goto out; - parent = dentry->d_parent; /* Protect against concurrent sillydeletes */ trace_nfs_lookup_enter(dir, dentry, flags); error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr, label); -- cgit v1.2.3 From 4995734e973a2c2e9c6f6413cbad9913fc4df0dc Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Fri, 24 Jun 2016 09:07:39 -0700 Subject: acpi, nfit: fix acpi_check_dsm() vs zero functions implemented QEMU 2.6 implements nascent support for nvdimm DSMs. Depending on configuration it may only implement the function0 dsm to indicate that no other DSMs are available. Commit 31eca76ba2fc "nfit, libnvdimm: limited/whitelisted dimm command marshaling mechanism" breaks QEMU, but QEMU is spec compliant. Per the spec the way to indicate that no functions are supported is: If Function Index is zero, the return is a buffer containing one bit for each function index, starting with zero. Bit 0 indicates whether there is support for any functions other than function 0 for the specified UUID and Revision ID. If set to zero, no functions are supported (other than function zero) for the specified UUID and Revision ID. Update the nfit driver to determine the family (interface UUID) without requiring the implementation to define any other functions, i.e. short-circuit acpi_check_dsm() to succeed per the spec. The nfit driver appears to be the only user passing funcs==0 to acpi_check_dsm(), so this behavior change of the common routine should be limited to the probing done by the nfit driver. Cc: Len Brown Cc: Jerry Hoemann Acked-by: "Rafael J. Wysocki" Fixes: 31eca76ba2fc ("nfit, libnvdimm: limited/whitelisted dimm command marshaling mechanism") Reported-by: Xiao Guangrong Tested-by: Xiao Guangrong Signed-off-by: Dan Williams --- drivers/acpi/nfit.c | 6 +++--- drivers/acpi/utils.c | 6 +++--- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c index 2215fc847fa9..32579a7b71d5 100644 --- a/drivers/acpi/nfit.c +++ b/drivers/acpi/nfit.c @@ -1131,11 +1131,11 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc, /* * Until standardization materializes we need to consider up to 3 - * different command sets. Note, that checking for function0 (bit0) - * tells us if any commands are reachable through this uuid. + * different command sets. Note, that checking for zero functions + * tells us if any commands might be reachable through this uuid. */ for (i = NVDIMM_FAMILY_INTEL; i <= NVDIMM_FAMILY_HPE2; i++) - if (acpi_check_dsm(adev_dimm->handle, to_nfit_uuid(i), 1, 1)) + if (acpi_check_dsm(adev_dimm->handle, to_nfit_uuid(i), 1, 0)) break; /* limit the supported commands to those that are publicly documented */ diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 22c09952e177..b4de130f2d57 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -680,9 +680,6 @@ bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, u64 rev, u64 funcs) u64 mask = 0; union acpi_object *obj; - if (funcs == 0) - return false; - obj = acpi_evaluate_dsm(handle, uuid, rev, 0, NULL); if (!obj) return false; @@ -695,6 +692,9 @@ bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, u64 rev, u64 funcs) mask |= (((u64)obj->buffer.pointer[i]) << (i * 8)); ACPI_FREE(obj); + if (funcs == 0) + return true; + /* * Bit 0 indicates whether there's support for any functions other than * function 0 for the specified UUID and revision. -- cgit v1.2.3 From 4fcd1813e6404dd4420c7d12fb483f9320f0bf93 Mon Sep 17 00:00:00 2001 From: Steve French Date: Wed, 22 Jun 2016 20:12:05 -0500 Subject: Fix reconnect to not defer smb3 session reconnect long after socket reconnect Azure server blocks clients that open a socket and don't do anything on it. In our reconnect scenarios, we can reconnect the tcp session and detect the socket is available but we defer the negprot and SMB3 session setup and tree connect reconnection until the next i/o is requested, but this looks suspicous to some servers who expect SMB3 negprog and session setup soon after a socket is created. In the echo thread, reconnect SMB3 sessions and tree connections that are disconnected. A later patch will replay persistent (and resilient) handle opens. CC: Stable Signed-off-by: Steve French Acked-by: Pavel Shilovsky --- fs/cifs/connect.c | 4 +++- fs/cifs/smb2pdu.c | 27 +++++++++++++++++++++++++++ 2 files changed, 30 insertions(+), 1 deletion(-) diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 66736f57b5ab..7d2b15c06090 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -428,7 +428,9 @@ cifs_echo_request(struct work_struct *work) * server->ops->need_neg() == true. Also, no need to ping if * we got a response recently. */ - if (!server->ops->need_neg || server->ops->need_neg(server) || + + if (server->tcpStatus == CifsNeedReconnect || + server->tcpStatus == CifsExiting || server->tcpStatus == CifsNew || (server->ops->can_echo && !server->ops->can_echo(server)) || time_before(jiffies, server->lstrp + echo_interval - HZ)) goto requeue_echo; diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index c3e61a7a7c7c..29e06db5f187 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -1812,6 +1812,33 @@ SMB2_echo(struct TCP_Server_Info *server) cifs_dbg(FYI, "In echo request\n"); + if (server->tcpStatus == CifsNeedNegotiate) { + struct list_head *tmp, *tmp2; + struct cifs_ses *ses; + struct cifs_tcon *tcon; + + cifs_dbg(FYI, "Need negotiate, reconnecting tcons\n"); + spin_lock(&cifs_tcp_ses_lock); + list_for_each(tmp, &server->smb_ses_list) { + ses = list_entry(tmp, struct cifs_ses, smb_ses_list); + list_for_each(tmp2, &ses->tcon_list) { + tcon = list_entry(tmp2, struct cifs_tcon, + tcon_list); + /* add check for persistent handle reconnect */ + if (tcon && tcon->need_reconnect) { + spin_unlock(&cifs_tcp_ses_lock); + rc = smb2_reconnect(SMB2_ECHO, tcon); + spin_lock(&cifs_tcp_ses_lock); + } + } + } + spin_unlock(&cifs_tcp_ses_lock); + } + + /* if no session, renegotiate failed above */ + if (server->tcpStatus == CifsNeedNegotiate) + return -EIO; + rc = small_smb2_init(SMB2_ECHO, NULL, (void **)&req); if (rc) return rc; -- cgit v1.2.3 From 45e8a2583d97ca758a55c608f78c4cef562644d1 Mon Sep 17 00:00:00 2001 From: Steve French Date: Wed, 22 Jun 2016 21:07:32 -0500 Subject: File names with trailing period or space need special case conversion POSIX allows files with trailing spaces or a trailing period but SMB3 does not, so convert these using the normal Services For Mac mapping as we do for other reserved characters such as : < > | ? * This is similar to what Macs do for the same problem over SMB3. CC: Stable Signed-off-by: Steve French Acked-by: Pavel Shilovsky --- fs/cifs/cifs_unicode.c | 33 +++++++++++++++++++++++++++++---- fs/cifs/cifs_unicode.h | 2 ++ 2 files changed, 31 insertions(+), 4 deletions(-) diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c index 5a53ac6b1e02..02b071bf3732 100644 --- a/fs/cifs/cifs_unicode.c +++ b/fs/cifs/cifs_unicode.c @@ -101,6 +101,12 @@ convert_sfm_char(const __u16 src_char, char *target) case SFM_SLASH: *target = '\\'; break; + case SFM_SPACE: + *target = ' '; + break; + case SFM_PERIOD: + *target = '.'; + break; default: return false; } @@ -404,7 +410,7 @@ static __le16 convert_to_sfu_char(char src_char) return dest_char; } -static __le16 convert_to_sfm_char(char src_char) +static __le16 convert_to_sfm_char(char src_char, bool end_of_string) { __le16 dest_char; @@ -427,6 +433,18 @@ static __le16 convert_to_sfm_char(char src_char) case '|': dest_char = cpu_to_le16(SFM_PIPE); break; + case '.': + if (end_of_string) + dest_char = cpu_to_le16(SFM_PERIOD); + else + dest_char = 0; + break; + case ' ': + if (end_of_string) + dest_char = cpu_to_le16(SFM_SPACE); + else + dest_char = 0; + break; default: dest_char = 0; } @@ -469,9 +487,16 @@ cifsConvertToUTF16(__le16 *target, const char *source, int srclen, /* see if we must remap this char */ if (map_chars == SFU_MAP_UNI_RSVD) dst_char = convert_to_sfu_char(src_char); - else if (map_chars == SFM_MAP_UNI_RSVD) - dst_char = convert_to_sfm_char(src_char); - else + else if (map_chars == SFM_MAP_UNI_RSVD) { + bool end_of_string; + + if (i == srclen - 1) + end_of_string = true; + else + end_of_string = false; + + dst_char = convert_to_sfm_char(src_char, end_of_string); + } else dst_char = 0; /* * FIXME: We can not handle remapping backslash (UNI_SLASH) diff --git a/fs/cifs/cifs_unicode.h b/fs/cifs/cifs_unicode.h index bdc52cb9a676..479bc0a941f3 100644 --- a/fs/cifs/cifs_unicode.h +++ b/fs/cifs/cifs_unicode.h @@ -64,6 +64,8 @@ #define SFM_LESSTHAN ((__u16) 0xF023) #define SFM_PIPE ((__u16) 0xF027) #define SFM_SLASH ((__u16) 0xF026) +#define SFM_PERIOD ((__u16) 0xF028) +#define SFM_SPACE ((__u16) 0xF029) /* * Mapping mechanism to use when one of the seven reserved characters is -- cgit v1.2.3 From 7e8b3dfef16375dbfeb1f36a83eb9f27117c51fd Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Thu, 23 Jun 2016 14:54:37 -0400 Subject: USB: EHCI: declare hostpc register as zero-length array The HOSTPC extension registers found in some EHCI implementations form a variable-length array, with one element for each port. Therefore the hostpc field in struct ehci_regs should be declared as a zero-length array, not a single-element array. This fixes a problem reported by UBSAN. Signed-off-by: Alan Stern Reported-by: Wilfried Klaebe Tested-by: Wilfried Klaebe CC: Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ehci_def.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/usb/ehci_def.h b/include/linux/usb/ehci_def.h index 966889a20ea3..e479033bd782 100644 --- a/include/linux/usb/ehci_def.h +++ b/include/linux/usb/ehci_def.h @@ -180,11 +180,11 @@ struct ehci_regs { * PORTSCx */ /* HOSTPC: offset 0x84 */ - u32 hostpc[1]; /* HOSTPC extension */ + u32 hostpc[0]; /* HOSTPC extension */ #define HOSTPC_PHCD (1<<22) /* Phy clock disable */ #define HOSTPC_PSPD (3<<25) /* Port speed detection */ - u32 reserved5[16]; + u32 reserved5[17]; /* USBMODE_EX: offset 0xc8 */ u32 usbmode_ex; /* USB Device mode extension */ -- cgit v1.2.3 From b42b90d177d0c7f46f9c888c10c7900578ae7e09 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 24 Jun 2016 23:49:03 -0400 Subject: ceph: fix d_obtain_alias() misuses on failure d_obtain_alias() will have done iput() Signed-off-by: Al Viro --- fs/ceph/export.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/fs/ceph/export.c b/fs/ceph/export.c index 6e72c98162d5..1780218a48f0 100644 --- a/fs/ceph/export.c +++ b/fs/ceph/export.c @@ -95,10 +95,8 @@ static struct dentry *__fh_to_dentry(struct super_block *sb, u64 ino) } dentry = d_obtain_alias(inode); - if (IS_ERR(dentry)) { - iput(inode); + if (IS_ERR(dentry)) return dentry; - } err = ceph_init_dentry(dentry); if (err < 0) { dput(dentry); @@ -167,10 +165,8 @@ static struct dentry *__get_parent(struct super_block *sb, return ERR_PTR(-ENOENT); dentry = d_obtain_alias(inode); - if (IS_ERR(dentry)) { - iput(inode); + if (IS_ERR(dentry)) return dentry; - } err = ceph_init_dentry(dentry); if (err < 0) { dput(dentry); @@ -210,7 +206,7 @@ static struct dentry *ceph_fh_to_parent(struct super_block *sb, dout("fh_to_parent %llx\n", cfh->parent_ino); dentry = __get_parent(sb, NULL, cfh->ino); - if (IS_ERR(dentry) && PTR_ERR(dentry) == -ENOENT) + if (unlikely(dentry == ERR_PTR(-ENOENT))) dentry = __fh_to_dentry(sb, cfh->parent_ino); return dentry; } -- cgit v1.2.3 From 1b45996d2ebf9680ccd0db875fc668aa025f40fd Mon Sep 17 00:00:00 2001 From: David Daney Date: Tue, 17 May 2016 11:41:04 -0700 Subject: tty: vt: Fix soft lockup in fbcon cursor blink timer. We are getting somewhat random soft lockups with this signature: [ 86.992215] [] el1_irq+0xa0/0x10c [ 86.997082] [] cursor_timer_handler+0x30/0x54 [ 87.002991] [] call_timer_fn+0x54/0x1a8 [ 87.008378] [] run_timer_softirq+0x1c4/0x2bc [ 87.014200] [] __do_softirq+0x114/0x344 [ 87.019590] [] irq_exit+0x74/0x98 [ 87.024458] [] __handle_domain_irq+0x98/0xfc [ 87.030278] [] gic_handle_irq+0x94/0x190 This is caused by the vt visual_init() function calling into fbcon_init() with a vc_cur_blink_ms value of zero. This is a transient condition, as it is later set to a non-zero value. But, if the timer happens to expire while the blink rate is zero, it goes into an endless loop, and we get soft lockup. The fix is to initialize vc_cur_blink_ms before calling the con_init() function. Signed-off-by: David Daney Cc: stable@vger.kernel.org Acked-by: Pavel Machek Tested-by: Ming Lei Acked-by: Scot Doyle Tested-by: Henrique de Moraes Holschuh Signed-off-by: Greg Kroah-Hartman --- drivers/tty/vt/vt.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index dc125322f48f..5b0fe97c46ca 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -750,6 +750,7 @@ static void visual_init(struct vc_data *vc, int num, int init) vc->vc_complement_mask = 0; vc->vc_can_do_color = 0; vc->vc_panic_force_write = false; + vc->vc_cur_blink_ms = DEFAULT_CURSOR_BLINK_MS; vc->vc_sw->con_init(vc, init); if (!vc->vc_complement_mask) vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800; -- cgit v1.2.3 From ef3149eb3ddb7f9125e11c90f8330e371b55cffd Mon Sep 17 00:00:00 2001 From: Luis de Bethencourt Date: Wed, 22 Jun 2016 20:43:30 +0100 Subject: staging: iio: accel: fix error check sca3000_read_ctrl_reg() returns a negative number on failure, check for this instead of zero. Signed-off-by: Luis de Bethencourt Cc: Signed-off-by: Jonathan Cameron --- drivers/staging/iio/accel/sca3000_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/iio/accel/sca3000_core.c b/drivers/staging/iio/accel/sca3000_core.c index a8f533af9eca..ec12181822e6 100644 --- a/drivers/staging/iio/accel/sca3000_core.c +++ b/drivers/staging/iio/accel/sca3000_core.c @@ -594,7 +594,7 @@ static ssize_t sca3000_read_frequency(struct device *dev, goto error_ret_mut; ret = sca3000_read_ctrl_reg(st, SCA3000_REG_CTRL_SEL_OUT_CTRL); mutex_unlock(&st->lock); - if (ret) + if (ret < 0) goto error_ret; val = ret; if (base_freq > 0) -- cgit v1.2.3 From 0c1f91b98552da49d9d8eed32b3132a58d2f4598 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 17 Jun 2016 15:22:24 +0200 Subject: iio: accel: kxsd9: fix the usage of spi_w8r8() These two spi_w8r8() calls return a value with is used by the code following the error check. The dubious use was caused by a cleanup patch. Fixes: d34dbee8ac8e ("staging:iio:accel:kxsd9 cleanup and conversion to iio_chan_spec.") Signed-off-by: Linus Walleij Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/accel/kxsd9.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c index 923f56598d4b..3a9f106787d2 100644 --- a/drivers/iio/accel/kxsd9.c +++ b/drivers/iio/accel/kxsd9.c @@ -81,7 +81,7 @@ static int kxsd9_write_scale(struct iio_dev *indio_dev, int micro) mutex_lock(&st->buf_lock); ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C)); - if (ret) + if (ret < 0) goto error_ret; st->tx[0] = KXSD9_WRITE(KXSD9_REG_CTRL_C); st->tx[1] = (ret & ~KXSD9_FS_MASK) | i; @@ -163,7 +163,7 @@ static int kxsd9_read_raw(struct iio_dev *indio_dev, break; case IIO_CHAN_INFO_SCALE: ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C)); - if (ret) + if (ret < 0) goto error_ret; *val2 = kxsd9_micro_scales[ret & KXSD9_FS_MASK]; ret = IIO_VAL_INT_PLUS_MICRO; -- cgit v1.2.3 From 6b7f4e25f3309f106a5c7ff42c8231494cf285d3 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 20 Jun 2016 13:53:32 +0100 Subject: iio:ad7266: Fix broken regulator error handling All regulator_get() variants return either a pointer to a regulator or an ERR_PTR() so testing for NULL makes no sense and may lead to bugs if we use NULL as a valid regulator. Fix this by using IS_ERR() as expected. Signed-off-by: Mark Brown Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7266.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c index 21e19b60e2b9..835d45db258f 100644 --- a/drivers/iio/adc/ad7266.c +++ b/drivers/iio/adc/ad7266.c @@ -397,7 +397,7 @@ static int ad7266_probe(struct spi_device *spi) st = iio_priv(indio_dev); st->reg = devm_regulator_get(&spi->dev, "vref"); - if (!IS_ERR_OR_NULL(st->reg)) { + if (!IS_ERR(st->reg)) { ret = regulator_enable(st->reg); if (ret) return ret; -- cgit v1.2.3 From e5511c816e5ac4909bdd38e85ac344e2b9b8e984 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 20 Jun 2016 13:53:33 +0100 Subject: iio:ad7266: Fix support for optional regulators The ad7266 driver attempts to support deciding between the use of internal and external power supplies by checking to see if an error is returned when requesting the regulator. This doesn't work with the current code since the driver uses a normal regulator_get() which is for non-optional supplies and so assumes that if a regulator is not provided by the platform then this is a bug in the platform integration and so substitutes a dummy regulator. Use regulator_get_optional() instead which indicates to the framework that the regulator may be absent and provides a dummy regulator instead. Signed-off-by: Mark Brown Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7266.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c index 835d45db258f..655b36b4e9cb 100644 --- a/drivers/iio/adc/ad7266.c +++ b/drivers/iio/adc/ad7266.c @@ -396,7 +396,7 @@ static int ad7266_probe(struct spi_device *spi) st = iio_priv(indio_dev); - st->reg = devm_regulator_get(&spi->dev, "vref"); + st->reg = devm_regulator_get_optional(&spi->dev, "vref"); if (!IS_ERR(st->reg)) { ret = regulator_enable(st->reg); if (ret) -- cgit v1.2.3 From 68b356eb3d9f5e38910fb62e22a78e2a18d544ae Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 20 Jun 2016 13:53:34 +0100 Subject: iio:ad7266: Fix probe deferral for vref Currently the ad7266 driver treats any failure to get vref as though the regulator were not present but this means that if probe deferral is triggered the driver will act as though the regulator were not present. Instead only use the internal reference if we explicitly got -ENODEV which is what is returned for absent regulators. Signed-off-by: Mark Brown Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7266.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c index 655b36b4e9cb..2123f0ac2e2a 100644 --- a/drivers/iio/adc/ad7266.c +++ b/drivers/iio/adc/ad7266.c @@ -408,6 +408,9 @@ static int ad7266_probe(struct spi_device *spi) st->vref_mv = ret / 1000; } else { + /* Any other error indicates that the regulator does exist */ + if (PTR_ERR(st->reg) != -ENODEV) + return PTR_ERR(st->reg); /* Use internal reference */ st->vref_mv = 2500; } -- cgit v1.2.3 From 5353ed8deedee9e5acb9f896e9032158f5d998de Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 20 Jun 2016 15:40:27 +0100 Subject: devpts: fix null pointer dereference on failed memory allocation An ENOMEM when creating a pair tty in tty_ldisc_setup causes a null pointer dereference in devpts_kill_index because tty->link->driver_data is NULL. The oops was triggered with the pty stressor in stress-ng when in a low memory condition. tty_init_dev tries to clean up a tty_ldisc_setup ENOMEM error by calling release_tty, however, this ultimately tries to clean up the NULL pair'd tty in pty_unix98_remove, triggering the Oops. Add check to pty_unix98_remove to only clean up fsi if it is not NULL. Ooops: [ 23.020961] Oops: 0000 [#1] SMP [ 23.020976] Modules linked in: ppdev snd_hda_codec_generic snd_hda_intel snd_hda_codec parport_pc snd_hda_core snd_hwdep parport snd_pcm input_leds joydev snd_timer serio_raw snd soundcore i2c_piix4 mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel qxl aes_x86_64 ttm lrw gf128mul glue_helper ablk_helper drm_kms_helper cryptd syscopyarea sysfillrect psmouse sysimgblt floppy fb_sys_fops drm pata_acpi jitterentropy_rng drbg ansi_cprng [ 23.020978] CPU: 0 PID: 1452 Comm: stress-ng-pty Not tainted 4.7.0-rc4+ #2 [ 23.020978] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 23.020979] task: ffff88007ba30000 ti: ffff880078ea8000 task.ti: ffff880078ea8000 [ 23.020981] RIP: 0010:[] [] ida_remove+0x1f/0x120 [ 23.020981] RSP: 0018:ffff880078eabb60 EFLAGS: 00010a03 [ 23.020982] RAX: 4444444444444567 RBX: 0000000000000000 RCX: 000000000000001f [ 23.020982] RDX: 000000000000014c RSI: 000000000000026f RDI: 0000000000000000 [ 23.020982] RBP: ffff880078eabb70 R08: 0000000000000004 R09: 0000000000000036 [ 23.020983] R10: 000000000000026f R11: 0000000000000000 R12: 000000000000026f [ 23.020983] R13: 000000000000026f R14: ffff88007c944b40 R15: 000000000000026f [ 23.020984] FS: 00007f9a2f3cc700(0000) GS:ffff88007fc00000(0000) knlGS:0000000000000000 [ 23.020984] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.020985] CR2: 0000000000000010 CR3: 000000006c81b000 CR4: 00000000001406f0 [ 23.020988] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.020988] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.020988] Stack: [ 23.020989] 0000000000000000 000000000000026f ffff880078eabb90 ffffffff812a5a99 [ 23.020990] 0000000000000000 00000000fffffff4 ffff880078eabba8 ffffffff814f9cbe [ 23.020991] ffff88007965c800 ffff880078eabbc8 ffffffff814eef43 fffffffffffffff4 [ 23.020991] Call Trace: [ 23.021000] [] devpts_kill_index+0x29/0x50 [ 23.021002] [] pty_unix98_remove+0x2e/0x50 [ 23.021006] [] release_tty+0xb3/0x1b0 [ 23.021007] [] tty_init_dev+0xd4/0x1c0 [ 23.021011] [] ptmx_open+0xae/0x190 [ 23.021013] [] chrdev_open+0xbf/0x1b0 [ 23.021015] [] do_dentry_open+0x203/0x310 [ 23.021016] [] ? cdev_put+0x30/0x30 [ 23.021017] [] vfs_open+0x54/0x80 [ 23.021018] [] ? may_open+0x8c/0x100 [ 23.021019] [] path_openat+0x2eb/0x1440 [ 23.021020] [] ? putname+0x54/0x60 [ 23.021022] [] ? n_tty_ioctl_helper+0x27/0x100 [ 23.021023] [] do_filp_open+0x91/0x100 [ 23.021024] [] ? getname_flags+0x56/0x1f0 [ 23.021026] [] ? __alloc_fd+0x46/0x190 [ 23.021027] [] do_sys_open+0x124/0x210 [ 23.021028] [] SyS_open+0x1e/0x20 [ 23.021035] [] entry_SYSCALL_64_fastpath+0x1e/0xa8 [ 23.021044] Code: 63 28 45 31 e4 eb dd 0f 1f 44 00 00 55 4c 63 d6 48 ba 89 88 88 88 88 88 88 88 4c 89 d0 b9 1f 00 00 00 48 f7 e2 48 89 e5 41 54 53 <8b> 47 10 48 89 fb 8d 3c c5 00 00 00 00 48 c1 ea 09 b8 01 00 00 [ 23.021045] RIP [] ida_remove+0x1f/0x120 [ 23.021045] RSP [ 23.021046] CR2: 0000000000000010 Signed-off-by: Colin Ian King Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/pty.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index f856c4544eea..51e0d32883ba 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -667,8 +667,11 @@ static void pty_unix98_remove(struct tty_driver *driver, struct tty_struct *tty) fsi = tty->driver_data; else fsi = tty->link->driver_data; - devpts_kill_index(fsi, tty->index); - devpts_release(fsi); + + if (fsi) { + devpts_kill_index(fsi, tty->index); + devpts_release(fsi); + } } static const struct tty_operations ptm_unix98_ops = { -- cgit v1.2.3 From a37503bc387ce2434106d4bf4870bd73081c7355 Mon Sep 17 00:00:00 2001 From: Jeremy Linton Date: Wed, 22 Jun 2016 12:40:50 -0500 Subject: net: smsc911x: Fix bug where PHY interrupts are overwritten by 0 By default, mdiobus_alloc() sets the PHYs to polling mode, but a pointer size memcpy means that a couple IRQs end up being overwritten with a value of 0. This means that PHY_POLL is disabled and results in unpredictable behavior depending on the PHY's location on the MDIO bus. Remove that memcpy and the now unused phy_irq member to force the SMSC911x PHYs into polling mode 100% of the time. Fixes: e7f4dc3536a4 ("mdio: Move allocation of interrupts into core") Signed-off-by: Jeremy Linton Reviewed-by: Andrew Lunn Acked-by: Sergei Shtylyov Signed-off-by: David S. Miller --- drivers/net/ethernet/smsc/smsc911x.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c index 8af25563f627..b5ab5e120bca 100644 --- a/drivers/net/ethernet/smsc/smsc911x.c +++ b/drivers/net/ethernet/smsc/smsc911x.c @@ -116,7 +116,6 @@ struct smsc911x_data { struct phy_device *phy_dev; struct mii_bus *mii_bus; - int phy_irq[PHY_MAX_ADDR]; unsigned int using_extphy; int last_duplex; int last_carrier; @@ -1073,7 +1072,6 @@ static int smsc911x_mii_init(struct platform_device *pdev, pdata->mii_bus->priv = pdata; pdata->mii_bus->read = smsc911x_mii_read; pdata->mii_bus->write = smsc911x_mii_write; - memcpy(pdata->mii_bus->irq, pdata->phy_irq, sizeof(pdata->mii_bus)); pdata->mii_bus->parent = &pdev->dev; -- cgit v1.2.3 From 8e96a87c5431c256feb65bcfc5aec92d9f7839b6 Mon Sep 17 00:00:00 2001 From: Cyril Bur Date: Fri, 17 Jun 2016 14:58:34 +1000 Subject: powerpc/tm: Always reclaim in start_thread() for exec() class syscalls Userspace can quite legitimately perform an exec() syscall with a suspended transaction. exec() does not return to the old process, rather it load a new one and starts that, the expectation therefore is that the new process starts not in a transaction. Currently exec() is not treated any differently to any other syscall which creates problems. Firstly it could allow a new process to start with a suspended transaction for a binary that no longer exists. This means that the checkpointed state won't be valid and if the suspended transaction were ever to be resumed and subsequently aborted (a possibility which is exceedingly likely as exec()ing will likely doom the transaction) the new process will jump to invalid state. Secondly the incorrect attempt to keep the transactional state while still zeroing state for the new process creates at least two TM Bad Things. The first triggers on the rfid to return to userspace as start_thread() has given the new process a 'clean' MSR but the suspend will still be set in the hardware MSR. The second TM Bad Thing triggers in __switch_to() as the processor is still transactionally suspended but __switch_to() wants to zero the TM sprs for the new process. This is an example of the outcome of calling exec() with a suspended transaction. Note the first 700 is likely the first TM bad thing decsribed earlier only the kernel can't report it as we've loaded userspace registers. c000000000009980 is the rfid in fast_exception_return() Bad kernel stack pointer 3fffcfa1a370 at c000000000009980 Oops: Bad kernel stack pointer, sig: 6 [#1] CPU: 0 PID: 2006 Comm: tm-execed Not tainted NIP: c000000000009980 LR: 0000000000000000 CTR: 0000000000000000 REGS: c00000003ffefd40 TRAP: 0700 Not tainted MSR: 8000000300201031 CR: 00000000 XER: 00000000 CFAR: c0000000000098b4 SOFTE: 0 PACATMSCRATCH: b00000010000d033 GPR00: 0000000000000000 00003fffcfa1a370 0000000000000000 0000000000000000 GPR04: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR12: 00003fff966611c0 0000000000000000 0000000000000000 0000000000000000 NIP [c000000000009980] fast_exception_return+0xb0/0xb8 LR [0000000000000000] (null) Call Trace: Instruction dump: f84d0278 e9a100d8 7c7b03a6 e84101a0 7c4ff120 e8410170 7c5a03a6 e8010070 e8410080 e8610088 e8810090 e8210078 <4c000024> 48000000 e8610178 88ed023b Kernel BUG at c000000000043e80 [verbose debug info unavailable] Unexpected TM Bad Thing exception at c000000000043e80 (msr 0x201033) Oops: Unrecoverable exception, sig: 6 [#2] CPU: 0 PID: 2006 Comm: tm-execed Tainted: G D task: c0000000fbea6d80 ti: c00000003ffec000 task.ti: c0000000fb7ec000 NIP: c000000000043e80 LR: c000000000015a24 CTR: 0000000000000000 REGS: c00000003ffef7e0 TRAP: 0700 Tainted: G D MSR: 8000000300201033 CR: 28002828 XER: 00000000 CFAR: c000000000015a20 SOFTE: 0 PACATMSCRATCH: b00000010000d033 GPR00: 0000000000000000 c00000003ffefa60 c000000000db5500 c0000000fbead000 GPR04: 8000000300001033 2222222222222222 2222222222222222 00000000ff160000 GPR08: 0000000000000000 800000010000d033 c0000000fb7e3ea0 c00000000fe00004 GPR12: 0000000000002200 c00000000fe00000 0000000000000000 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 0000000000000000 c0000000fbea7410 00000000ff160000 GPR24: c0000000ffe1f600 c0000000fbea8700 c0000000fbea8700 c0000000fbead000 GPR28: c000000000e20198 c0000000fbea6d80 c0000000fbeab680 c0000000fbea6d80 NIP [c000000000043e80] tm_restore_sprs+0xc/0x1c LR [c000000000015a24] __switch_to+0x1f4/0x420 Call Trace: Instruction dump: 7c800164 4e800020 7c0022a6 f80304a8 7c0222a6 f80304b0 7c0122a6 f80304b8 4e800020 e80304a8 7c0023a6 e80304b0 <7c0223a6> e80304b8 7c0123a6 4e800020 This fixes CVE-2016-5828. Fixes: bc2a9408fa65 ("powerpc: Hook in new transactional memory code") Cc: stable@vger.kernel.org # v3.9+ Signed-off-by: Cyril Bur Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/process.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index e2f12cbcade9..0b93893424f5 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1505,6 +1505,16 @@ void start_thread(struct pt_regs *regs, unsigned long start, unsigned long sp) current->thread.regs = regs - 1; } +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM + /* + * Clear any transactional state, we're exec()ing. The cause is + * not important as there will never be a recheckpoint so it's not + * user visible. + */ + if (MSR_TM_SUSPENDED(mfmsr())) + tm_reclaim_current(0); +#endif + memset(regs->gpr, 0, sizeof(regs->gpr)); regs->ctr = 0; regs->link = 0; -- cgit v1.2.3 From 0efce9da1255f13d910842b62cb14371044a3c50 Mon Sep 17 00:00:00 2001 From: Sudeep Holla Date: Wed, 8 Jun 2016 11:38:55 +0100 Subject: arm64: KVM: fix build with CONFIG_ARM_PMU disabled When CONFIG_ARM_PMU is disabled, we get the following build error: arch/arm64/kvm/sys_regs.c: In function 'pmu_counter_idx_valid': arch/arm64/kvm/sys_regs.c:564:27: error: 'ARMV8_PMU_CYCLE_IDX' undeclared (first use in this function) if (idx >= val && idx != ARMV8_PMU_CYCLE_IDX) ^ arch/arm64/kvm/sys_regs.c:564:27: note: each undeclared identifier is reported only once for each function it appears in arch/arm64/kvm/sys_regs.c: In function 'access_pmu_evcntr': arch/arm64/kvm/sys_regs.c:592:10: error: 'ARMV8_PMU_CYCLE_IDX' undeclared (first use in this function) idx = ARMV8_PMU_CYCLE_IDX; ^ arch/arm64/kvm/sys_regs.c: In function 'access_pmu_evtyper': arch/arm64/kvm/sys_regs.c:638:14: error: 'ARMV8_PMU_CYCLE_IDX' undeclared (first use in this function) if (idx == ARMV8_PMU_CYCLE_IDX) ^ arch/arm64/kvm/hyp/switch.c:86:15: error: 'ARMV8_PMU_USERENR_MASK' undeclared (first use in this function) write_sysreg(ARMV8_PMU_USERENR_MASK, pmuserenr_el0); This patch fixes the build with CONFIG_ARM_PMU disabled. Cc: Christoffer Dall Cc: Marc Zyngier Signed-off-by: Sudeep Holla Signed-off-by: Christoffer Dall --- include/kvm/arm_pmu.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/kvm/arm_pmu.h b/include/kvm/arm_pmu.h index fe389ac31489..92e7e97ca8ff 100644 --- a/include/kvm/arm_pmu.h +++ b/include/kvm/arm_pmu.h @@ -18,13 +18,13 @@ #ifndef __ASM_ARM_KVM_PMU_H #define __ASM_ARM_KVM_PMU_H -#ifdef CONFIG_KVM_ARM_PMU - #include #include #define ARMV8_PMU_CYCLE_IDX (ARMV8_PMU_MAX_COUNTERS - 1) +#ifdef CONFIG_KVM_ARM_PMU + struct kvm_pmc { u8 idx; /* index into the pmu->pmc array */ struct perf_event *perf_event; -- cgit v1.2.3 From 583248e6620a4726093295e2d6785fcbc2e86428 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 1 Jun 2016 12:10:08 +0100 Subject: iommu/iova: Disable preemption around use of this_cpu_ptr() Between acquiring the this_cpu_ptr() and using it, ideally we don't want to be preempted and work on another CPU's private data. this_cpu_ptr() checks whether or not preemption is disable, and get_cpu_ptr() provides a convenient wrapper for operating on the cpu ptr inside a preemption disabled critical section (which currently is provided by the spinlock). [ 167.997877] BUG: using smp_processor_id() in preemptible [00000000] code: usb-storage/216 [ 167.997940] caller is debug_smp_processor_id+0x17/0x20 [ 167.997945] CPU: 7 PID: 216 Comm: usb-storage Tainted: G U 4.7.0-rc1-gfxbench-RO_Patchwork_1057+ #1 [ 167.997948] Hardware name: Hewlett-Packard HP Pro 3500 Series/2ABF, BIOS 8.11 10/24/2012 [ 167.997951] 0000000000000000 ffff880118b7f9c8 ffffffff8140dca5 0000000000000007 [ 167.997958] ffffffff81a3a7e9 ffff880118b7f9f8 ffffffff8142a927 0000000000000000 [ 167.997965] ffff8800d499ed58 0000000000000001 00000000000fffff ffff880118b7fa08 [ 167.997971] Call Trace: [ 167.997977] [] dump_stack+0x67/0x92 [ 167.997981] [] check_preemption_disabled+0xd7/0xe0 [ 167.997985] [] debug_smp_processor_id+0x17/0x20 [ 167.997990] [] alloc_iova_fast+0xb7/0x210 [ 167.997994] [] intel_alloc_iova+0x7f/0xd0 [ 167.997998] [] intel_map_sg+0xbd/0x240 [ 167.998002] [] ? debug_lockdep_rcu_enabled+0x1d/0x20 [ 167.998009] [] usb_hcd_map_urb_for_dma+0x4b9/0x5a0 [ 167.998013] [] usb_hcd_submit_urb+0xe9/0xaa0 [ 167.998017] [] ? mark_held_locks+0x6f/0xa0 [ 167.998022] [] ? __raw_spin_lock_init+0x1c/0x50 [ 167.998025] [] ? debug_lockdep_rcu_enabled+0x1d/0x20 [ 167.998028] [] usb_submit_urb+0x3f3/0x5a0 [ 167.998032] [] ? trace_hardirqs_on_caller+0x122/0x1b0 [ 167.998035] [] usb_sg_wait+0x67/0x150 [ 167.998039] [] usb_stor_bulk_transfer_sglist.part.3+0x82/0xd0 [ 167.998042] [] usb_stor_bulk_srb+0x4c/0x60 [ 167.998045] [] usb_stor_Bulk_transport+0x17e/0x420 [ 167.998049] [] usb_stor_invoke_transport+0x242/0x540 [ 167.998052] [] ? debug_lockdep_rcu_enabled+0x1d/0x20 [ 167.998058] [] usb_stor_transparent_scsi_command+0x9/0x10 [ 167.998061] [] usb_stor_control_thread+0x158/0x260 [ 167.998064] [] ? fill_inquiry_response+0x20/0x20 [ 167.998067] [] ? fill_inquiry_response+0x20/0x20 [ 167.998071] [] kthread+0xea/0x100 [ 167.998078] [] ret_from_fork+0x1f/0x40 [ 167.998081] [] ? kthread_create_on_node+0x1f0/0x1f0 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96293 Signed-off-by: Chris Wilson Cc: Joonas Lahtinen Cc: Joerg Roedel Cc: iommu@lists.linux-foundation.org Cc: linux-kernel@vger.kernel.org Fixes: 9257b4a206fc ('iommu/iova: introduce per-cpu caching to iova allocation') Signed-off-by: Joerg Roedel --- drivers/iommu/iova.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c index ba764a0835d3..e23001bfcfee 100644 --- a/drivers/iommu/iova.c +++ b/drivers/iommu/iova.c @@ -420,8 +420,10 @@ retry: /* Try replenishing IOVAs by flushing rcache. */ flushed_rcache = true; + preempt_disable(); for_each_online_cpu(cpu) free_cpu_cached_iovas(cpu, iovad); + preempt_enable(); goto retry; } @@ -749,7 +751,7 @@ static bool __iova_rcache_insert(struct iova_domain *iovad, bool can_insert = false; unsigned long flags; - cpu_rcache = this_cpu_ptr(rcache->cpu_rcaches); + cpu_rcache = get_cpu_ptr(rcache->cpu_rcaches); spin_lock_irqsave(&cpu_rcache->lock, flags); if (!iova_magazine_full(cpu_rcache->loaded)) { @@ -779,6 +781,7 @@ static bool __iova_rcache_insert(struct iova_domain *iovad, iova_magazine_push(cpu_rcache->loaded, iova_pfn); spin_unlock_irqrestore(&cpu_rcache->lock, flags); + put_cpu_ptr(rcache->cpu_rcaches); if (mag_to_free) { iova_magazine_free_pfns(mag_to_free, iovad); @@ -812,7 +815,7 @@ static unsigned long __iova_rcache_get(struct iova_rcache *rcache, bool has_pfn = false; unsigned long flags; - cpu_rcache = this_cpu_ptr(rcache->cpu_rcaches); + cpu_rcache = get_cpu_ptr(rcache->cpu_rcaches); spin_lock_irqsave(&cpu_rcache->lock, flags); if (!iova_magazine_empty(cpu_rcache->loaded)) { @@ -834,6 +837,7 @@ static unsigned long __iova_rcache_get(struct iova_rcache *rcache, iova_pfn = iova_magazine_pop(cpu_rcache->loaded, limit_pfn); spin_unlock_irqrestore(&cpu_rcache->lock, flags); + put_cpu_ptr(rcache->cpu_rcaches); return iova_pfn; } -- cgit v1.2.3 From 591d215afcc2f94e8e2c69a63c924c044677eb31 Mon Sep 17 00:00:00 2001 From: James Morse Date: Wed, 8 Jun 2016 17:24:45 +0100 Subject: KVM: arm/arm64: Stop leaking vcpu pid references kvm provides kvm_vcpu_uninit(), which amongst other things, releases the last reference to the struct pid of the task that was last running the vcpu. On arm64 built with CONFIG_DEBUG_KMEMLEAK, starting a guest with kvmtool, then killing it with SIGKILL results (after some considerable time) in: > cat /sys/kernel/debug/kmemleak > unreferenced object 0xffff80007d5ea080 (size 128): > comm "lkvm", pid 2025, jiffies 4294942645 (age 1107.776s) > hex dump (first 32 bytes): > 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > backtrace: > [] create_object+0xfc/0x278 > [] kmemleak_alloc+0x34/0x70 > [] kmem_cache_alloc+0x16c/0x1d8 > [] alloc_pid+0x34/0x4d0 > [] copy_process.isra.6+0x79c/0x1338 > [] _do_fork+0x74/0x320 > [] SyS_clone+0x18/0x20 > [] el0_svc_naked+0x24/0x28 > [] 0xffffffffffffffff On x86 kvm_vcpu_uninit() is called on the path from kvm_arch_destroy_vm(), on arm no equivalent call is made. Add the call to kvm_arch_vcpu_free(). Signed-off-by: James Morse Fixes: 749cf76c5a36 ("KVM: ARM: Initial skeleton to compile KVM support") Cc: # 3.10+ Acked-by: Marc Zyngier Signed-off-by: Christoffer Dall --- arch/arm/kvm/arm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index 893941ec98dc..f1bde7c4e736 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -263,6 +263,7 @@ void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) kvm_timer_vcpu_terminate(vcpu); kvm_vgic_vcpu_destroy(vcpu); kvm_pmu_vcpu_destroy(vcpu); + kvm_vcpu_uninit(vcpu); kmem_cache_free(kvm_vcpu_cache, vcpu); } -- cgit v1.2.3 From 3bd4f9112f87a9c65fe6e817272806167f0bc9ed Mon Sep 17 00:00:00 2001 From: Jan Niehusmann Date: Mon, 6 Jun 2016 14:20:11 +0200 Subject: iommu/vt-d: Fix overflow of iommu->domains array The valid range of 'did' in get_iommu_domain(*iommu, did) is 0..cap_ndoms(iommu->cap), so don't exceed that range in free_all_cpu_cached_iovas(). The user-visible impact of the out-of-bounds access is the machine hanging on suspend-to-ram. It is, in fact, a kernel panic, but due to already suspended devices, that's often not visible to the user. Fixes: 22e2f9fa63b0 ("iommu/vt-d: Use per-cpu IOVA caching") Signed-off-by: Jan Niehusmann Tested-By: Marius Vlad Signed-off-by: Joerg Roedel --- drivers/iommu/intel-iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 10700945994e..cfe410eedaf0 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -4607,7 +4607,7 @@ static void free_all_cpu_cached_iovas(unsigned int cpu) if (!iommu) continue; - for (did = 0; did < 0xffff; did++) { + for (did = 0; did < cap_ndoms(iommu->cap); did++) { domain = get_iommu_domain(iommu, did); if (!domain) -- cgit v1.2.3 From 6082ee72e9d89e80a664418be06f47d728243e85 Mon Sep 17 00:00:00 2001 From: Nicolas Iooss Date: Sun, 26 Jun 2016 10:33:29 +0200 Subject: iommu/amd: Initialize devid variable before using it Commit 2a0cb4e2d423 ("iommu/amd: Add new map for storing IVHD dev entry type HID") added a call to DUMP_printk in init_iommu_from_acpi() which used the value of devid before this variable was initialized. Fixes: 2a0cb4e2d423 ('iommu/amd: Add new map for storing IVHD dev entry type HID') Signed-off-by: Nicolas Iooss Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu_init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index 9e0034196e10..d091defc3426 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -1107,13 +1107,13 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu, break; } + devid = e->devid; DUMP_printk(" DEV_ACPI_HID(%s[%s])\t\tdevid: %02x:%02x.%x\n", hid, uid, PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid)); - devid = e->devid; flags = e->flags; ret = add_acpi_hid_device(hid, uid, &devid, false); -- cgit v1.2.3 From d20cb71dbf3487f24549ede1a8e2d67579b4632e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 20 Jun 2016 13:14:36 -0400 Subject: make nfs_atomic_open() call d_drop() on all ->open_context() errors. In "NFSv4: Move dentry instantiation into the NFSv4-specific atomic open code" unconditional d_drop() after the ->open_context() had been removed. It had been correct for success cases (there ->open_context() itself had been doing dcache manipulations), but not for error ones. Only one of those (ENOENT) got a compensatory d_drop() added in that commit, but in fact it should've been done for all errors. As it is, the case of O_CREAT non-exclusive open on a hashed negative dentry racing with e.g. symlink creation from another client ended up with ->open_context() getting an error and proceeding to call nfs_lookup(). On a hashed dentry, which would've instantly triggered BUG_ON() in d_materialise_unique() (or, these days, its equivalent in d_splice_alias()). Cc: stable@vger.kernel.org # v3.10+ Tested-by: Oleg Drokin Signed-off-by: Al Viro Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/dir.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 2817cce7a9f4..d8015a03db4c 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1539,9 +1539,9 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry, err = PTR_ERR(inode); trace_nfs_atomic_open_exit(dir, ctx, open_flags, err); put_nfs_open_context(ctx); + d_drop(dentry); switch (err) { case -ENOENT: - d_drop(dentry); d_add(dentry, NULL); nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); break; -- cgit v1.2.3 From 749d088b8e7f4b9826ede02b9a043e417fa84aa1 Mon Sep 17 00:00:00 2001 From: Minfei Huang Date: Fri, 27 May 2016 14:17:10 +0800 Subject: pvclock: Add CPU barriers to get correct version value Protocol for the "version" fields is: hypervisor raises it (making it uneven) before it starts updating the fields and raises it again (making it even) when it is done. Thus the guest can make sure the time values it got are consistent by checking the version before and after reading them. Add CPU barries after getting version value just like what function vread_pvclock does, because all of callees in this function is inline. Fixes: 502dfeff239e8313bfbe906ca0a1a6827ac8481b Cc: stable@vger.kernel.org Signed-off-by: Minfei Huang Signed-off-by: Paolo Bonzini --- arch/x86/include/asm/pvclock.h | 2 ++ arch/x86/kernel/pvclock.c | 4 ++++ 2 files changed, 6 insertions(+) diff --git a/arch/x86/include/asm/pvclock.h b/arch/x86/include/asm/pvclock.h index fdcc04020636..538ae944855e 100644 --- a/arch/x86/include/asm/pvclock.h +++ b/arch/x86/include/asm/pvclock.h @@ -85,6 +85,8 @@ unsigned __pvclock_read_cycles(const struct pvclock_vcpu_time_info *src, u8 ret_flags; version = src->version; + /* Make the latest version visible */ + smp_rmb(); offset = pvclock_get_nsec_offset(src); ret = src->system_time + offset; diff --git a/arch/x86/kernel/pvclock.c b/arch/x86/kernel/pvclock.c index 99bfc025111d..7f82fe0a6807 100644 --- a/arch/x86/kernel/pvclock.c +++ b/arch/x86/kernel/pvclock.c @@ -66,6 +66,8 @@ u8 pvclock_read_flags(struct pvclock_vcpu_time_info *src) do { version = __pvclock_read_cycles(src, &ret, &flags); + /* Make sure that the version double-check is last. */ + smp_rmb(); } while ((src->version & 1) || version != src->version); return flags & valid_flags; @@ -80,6 +82,8 @@ cycle_t pvclock_clocksource_read(struct pvclock_vcpu_time_info *src) do { version = __pvclock_read_cycles(src, &ret, &flags); + /* Make sure that the version double-check is last. */ + smp_rmb(); } while ((src->version & 1) || version != src->version); if (unlikely((flags & PVCLOCK_GUEST_STOPPED) != 0)) { -- cgit v1.2.3 From f7550d076d55c1b5f02f95012e3a5a84d264c47d Mon Sep 17 00:00:00 2001 From: Minfei Huang Date: Fri, 27 May 2016 14:17:11 +0800 Subject: pvclock: Cleanup to remove function pvclock_get_nsec_offset Function __pvclock_read_cycles is short enough, so there is no need to have another function pvclock_get_nsec_offset to calculate tsc delta. It's better to combine it into function __pvclock_read_cycles. Remove useless variables in function __pvclock_read_cycles. Signed-off-by: Minfei Huang Signed-off-by: Paolo Bonzini --- arch/x86/include/asm/pvclock.h | 23 +++++++---------------- 1 file changed, 7 insertions(+), 16 deletions(-) diff --git a/arch/x86/include/asm/pvclock.h b/arch/x86/include/asm/pvclock.h index 538ae944855e..7c1c89598688 100644 --- a/arch/x86/include/asm/pvclock.h +++ b/arch/x86/include/asm/pvclock.h @@ -68,32 +68,23 @@ static inline u64 pvclock_scale_delta(u64 delta, u32 mul_frac, int shift) return product; } -static __always_inline -u64 pvclock_get_nsec_offset(const struct pvclock_vcpu_time_info *src) -{ - u64 delta = rdtsc_ordered() - src->tsc_timestamp; - return pvclock_scale_delta(delta, src->tsc_to_system_mul, - src->tsc_shift); -} - static __always_inline unsigned __pvclock_read_cycles(const struct pvclock_vcpu_time_info *src, cycle_t *cycles, u8 *flags) { unsigned version; - cycle_t ret, offset; - u8 ret_flags; + cycle_t offset; + u64 delta; version = src->version; /* Make the latest version visible */ smp_rmb(); - offset = pvclock_get_nsec_offset(src); - ret = src->system_time + offset; - ret_flags = src->flags; - - *cycles = ret; - *flags = ret_flags; + delta = rdtsc_ordered() - src->tsc_timestamp; + offset = pvclock_scale_delta(delta, src->tsc_to_system_mul, + src->tsc_shift); + *cycles = src->system_time + offset; + *flags = src->flags; return version; } -- cgit v1.2.3 From ed911b43adb889c37a37fa57a995f0b460c633b6 Mon Sep 17 00:00:00 2001 From: Minfei Huang Date: Sat, 28 May 2016 20:27:43 +0800 Subject: pvclock: Get rid of __pvclock_read_cycles in function pvclock_read_flags There is a generic function __pvclock_read_cycles to be used to get both flags and cycles. For function pvclock_read_flags, it's useless to get cycles value. To make this function be more effective, get this variable flags directly in function. Signed-off-by: Minfei Huang Signed-off-by: Paolo Bonzini --- arch/x86/kernel/pvclock.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/pvclock.c b/arch/x86/kernel/pvclock.c index 7f82fe0a6807..06c58ce46762 100644 --- a/arch/x86/kernel/pvclock.c +++ b/arch/x86/kernel/pvclock.c @@ -61,11 +61,14 @@ void pvclock_resume(void) u8 pvclock_read_flags(struct pvclock_vcpu_time_info *src) { unsigned version; - cycle_t ret; u8 flags; do { - version = __pvclock_read_cycles(src, &ret, &flags); + version = src->version; + /* Make the latest version visible */ + smp_rmb(); + + flags = src->flags; /* Make sure that the version double-check is last. */ smp_rmb(); } while ((src->version & 1) || version != src->version); -- cgit v1.2.3 From 8d93c874ac899bfdf0ad3787baef684a0c878c2c Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Mon, 20 Jun 2016 22:28:02 -0300 Subject: KVM: x86: move nsec_to_cycles from x86.c to x86.h Move the inline function nsec_to_cycles from x86.c to x86.h, as the next patch uses it from lapic.c. Signed-off-by: Marcelo Tosatti Signed-off-by: Paolo Bonzini --- arch/x86/kvm/x86.c | 6 ------ arch/x86/kvm/x86.h | 7 +++++++ 2 files changed, 7 insertions(+), 6 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 902d9da12392..7da5dd2057a9 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1244,12 +1244,6 @@ static atomic_t kvm_guest_has_master_clock = ATOMIC_INIT(0); static DEFINE_PER_CPU(unsigned long, cpu_tsc_khz); static unsigned long max_tsc_khz; -static inline u64 nsec_to_cycles(struct kvm_vcpu *vcpu, u64 nsec) -{ - return pvclock_scale_delta(nsec, vcpu->arch.virtual_tsc_mult, - vcpu->arch.virtual_tsc_shift); -} - static u32 adjust_tsc_khz(u32 khz, s32 ppm) { u64 v = (u64)khz * (1000000 + ppm); diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h index 7ce3634ab5fe..a82ca466b62e 100644 --- a/arch/x86/kvm/x86.h +++ b/arch/x86/kvm/x86.h @@ -2,6 +2,7 @@ #define ARCH_X86_KVM_X86_H #include +#include #include "kvm_cache_regs.h" #define MSR_IA32_CR_PAT_DEFAULT 0x0007040600070406ULL @@ -195,6 +196,12 @@ extern unsigned int lapic_timer_advance_ns; extern struct static_key kvm_no_apic_vcpu; +static inline u64 nsec_to_cycles(struct kvm_vcpu *vcpu, u64 nsec) +{ + return pvclock_scale_delta(nsec, vcpu->arch.virtual_tsc_mult, + vcpu->arch.virtual_tsc_shift); +} + /* Same "calling convention" as do_div: * - divide (n << 32) by base * - put result in n -- cgit v1.2.3 From b606f189c7d5bf9b875bba168162fe05287880fe Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Mon, 20 Jun 2016 22:33:48 -0300 Subject: KVM: LAPIC: cap __delay at lapic_timer_advance_ns The host timer which emulates the guest LAPIC TSC deadline timer has its expiration diminished by lapic_timer_advance_ns nanoseconds. Therefore if, at wait_lapic_expire, a difference larger than lapic_timer_advance_ns is encountered, delay at most lapic_timer_advance_ns. This fixes a problem where the guest can cause the host to delay for large amounts of time. Reported-by: Alan Jenkins Signed-off-by: Marcelo Tosatti Signed-off-by: Paolo Bonzini --- arch/x86/kvm/lapic.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index bbb5b283ff63..a397200281c1 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -1310,7 +1310,8 @@ void wait_lapic_expire(struct kvm_vcpu *vcpu) /* __delay is delay_tsc whenever the hardware has TSC, thus always. */ if (guest_tsc < tsc_deadline) - __delay(tsc_deadline - guest_tsc); + __delay(min(tsc_deadline - guest_tsc, + nsec_to_cycles(vcpu, lapic_timer_advance_ns))); } static void start_apic_timer(struct kvm_lapic *apic) -- cgit v1.2.3 From ff30ef40deca4658e27b0c596e7baf39115e858f Mon Sep 17 00:00:00 2001 From: Quentin Casasnovas Date: Sat, 18 Jun 2016 11:01:05 +0200 Subject: KVM: nVMX: VMX instructions: fix segment checks when L1 is in long mode. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit I couldn't get Xen to boot a L2 HVM when it was nested under KVM - it was getting a GP(0) on a rather unspecial vmread from Xen: (XEN) ----[ Xen-4.7.0-rc x86_64 debug=n Not tainted ]---- (XEN) CPU: 1 (XEN) RIP: e008:[] vmx_get_segment_register+0x14e/0x450 (XEN) RFLAGS: 0000000000010202 CONTEXT: hypervisor (d1v0) (XEN) rax: ffff82d0801e6288 rbx: ffff83003ffbfb7c rcx: fffffffffffab928 (XEN) rdx: 0000000000000000 rsi: 0000000000000000 rdi: ffff83000bdd0000 (XEN) rbp: ffff83000bdd0000 rsp: ffff83003ffbfab0 r8: ffff830038813910 (XEN) r9: ffff83003faf3958 r10: 0000000a3b9f7640 r11: ffff83003f82d418 (XEN) r12: 0000000000000000 r13: ffff83003ffbffff r14: 0000000000004802 (XEN) r15: 0000000000000008 cr0: 0000000080050033 cr4: 00000000001526e0 (XEN) cr3: 000000003fc79000 cr2: 0000000000000000 (XEN) ds: 0000 es: 0000 fs: 0000 gs: 0000 ss: 0000 cs: e008 (XEN) Xen code around (vmx_get_segment_register+0x14e/0x450): (XEN) 00 00 41 be 02 48 00 00 <44> 0f 78 74 24 08 0f 86 38 56 00 00 b8 08 68 00 (XEN) Xen stack trace from rsp=ffff83003ffbfab0: ... (XEN) Xen call trace: (XEN) [] vmx_get_segment_register+0x14e/0x450 (XEN) [] get_page_from_gfn_p2m+0x165/0x300 (XEN) [] hvmemul_get_seg_reg+0x52/0x60 (XEN) [] hvm_emulate_prepare+0x53/0x70 (XEN) [] handle_mmio+0x2b/0xd0 (XEN) [] emulate.c#_hvm_emulate_one+0x111/0x2c0 (XEN) [] handle_hvm_io_completion+0x274/0x2a0 (XEN) [] __get_gfn_type_access+0xfa/0x270 (XEN) [] timer.c#add_entry+0x4b/0xb0 (XEN) [] timer.c#remove_entry+0x7c/0x90 (XEN) [] hvm_do_resume+0x23/0x140 (XEN) [] vmx_do_resume+0xa7/0x140 (XEN) [] context_switch+0x13b/0xe40 (XEN) [] schedule.c#schedule+0x22e/0x570 (XEN) [] softirq.c#__do_softirq+0x5c/0x90 (XEN) [] domain.c#idle_loop+0x25/0x50 (XEN) (XEN) (XEN) **************************************** (XEN) Panic on CPU 1: (XEN) GENERAL PROTECTION FAULT (XEN) [error_code=0000] (XEN) **************************************** Tracing my host KVM showed it was the one injecting the GP(0) when emulating the VMREAD and checking the destination segment permissions in get_vmx_mem_address(): 3) | vmx_handle_exit() { 3) | handle_vmread() { 3) | nested_vmx_check_permission() { 3) | vmx_get_segment() { 3) 0.074 us | vmx_read_guest_seg_base(); 3) 0.065 us | vmx_read_guest_seg_selector(); 3) 0.066 us | vmx_read_guest_seg_ar(); 3) 1.636 us | } 3) 0.058 us | vmx_get_rflags(); 3) 0.062 us | vmx_read_guest_seg_ar(); 3) 3.469 us | } 3) | vmx_get_cs_db_l_bits() { 3) 0.058 us | vmx_read_guest_seg_ar(); 3) 0.662 us | } 3) | get_vmx_mem_address() { 3) 0.068 us | vmx_cache_reg(); 3) | vmx_get_segment() { 3) 0.074 us | vmx_read_guest_seg_base(); 3) 0.068 us | vmx_read_guest_seg_selector(); 3) 0.071 us | vmx_read_guest_seg_ar(); 3) 1.756 us | } 3) | kvm_queue_exception_e() { 3) 0.066 us | kvm_multiple_exception(); 3) 0.684 us | } 3) 4.085 us | } 3) 9.833 us | } 3) + 10.366 us | } Cross-checking the KVM/VMX VMREAD emulation code with the Intel Software Developper Manual Volume 3C - "VMREAD - Read Field from Virtual-Machine Control Structure", I found that we're enforcing that the destination operand is NOT located in a read-only data segment or any code segment when the L1 is in long mode - BUT that check should only happen when it is in protected mode. Shuffling the code a bit to make our emulation follow the specification allows me to boot a Xen dom0 in a nested KVM and start HVM L2 guests without problems. Fixes: f9eb4af67c9d ("KVM: nVMX: VMX instructions: add checks for #GP/#SS exceptions") Signed-off-by: Quentin Casasnovas Cc: Eugene Korenevsky Cc: Paolo Bonzini Cc: Radim Krčmář Cc: Thomas Gleixner Cc: Ingo Molnar Cc: H. Peter Anvin Cc: linux-stable Signed-off-by: Paolo Bonzini --- arch/x86/kvm/vmx.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 003618e324ce..64a79f271276 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -6671,7 +6671,13 @@ static int get_vmx_mem_address(struct kvm_vcpu *vcpu, /* Checks for #GP/#SS exceptions. */ exn = false; - if (is_protmode(vcpu)) { + if (is_long_mode(vcpu)) { + /* Long mode: #GP(0)/#SS(0) if the memory address is in a + * non-canonical form. This is the only check on the memory + * destination for long mode! + */ + exn = is_noncanonical_address(*ret); + } else if (is_protmode(vcpu)) { /* Protected mode: apply checks for segment validity in the * following order: * - segment type check (#GP(0) may be thrown) @@ -6688,17 +6694,10 @@ static int get_vmx_mem_address(struct kvm_vcpu *vcpu, * execute-only code segment */ exn = ((s.type & 0xa) == 8); - } - if (exn) { - kvm_queue_exception_e(vcpu, GP_VECTOR, 0); - return 1; - } - if (is_long_mode(vcpu)) { - /* Long mode: #GP(0)/#SS(0) if the memory address is in a - * non-canonical form. This is an only check for long mode. - */ - exn = is_noncanonical_address(*ret); - } else if (is_protmode(vcpu)) { + if (exn) { + kvm_queue_exception_e(vcpu, GP_VECTOR, 0); + return 1; + } /* Protected mode: #GP(0)/#SS(0) if the segment is unusable. */ exn = (s.unusable != 0); -- cgit v1.2.3 From 48f1dcb55a7d29aeb8965c567660c14d0dfd1a42 Mon Sep 17 00:00:00 2001 From: Paolo Abeni Date: Thu, 23 Jun 2016 15:25:09 +0200 Subject: ipv6: enforce egress device match in per table nexthop lookups with the commit 8c14586fc320 ("net: ipv6: Use passed in table for nexthop lookups"), net hop lookup is first performed on route creation in the passed-in table. However device match is not enforced in table lookup, so the found route can be later discarded due to egress device mismatch and no global lookup will be performed. This cause the following to fail: ip link add dummy1 type dummy ip link add dummy2 type dummy ip link set dummy1 up ip link set dummy2 up ip route add 2001:db8:8086::/48 dev dummy1 metric 20 ip route add 2001:db8:d34d::/64 via 2001:db8:8086::2 dev dummy1 metric 20 ip route add 2001:db8:8086::/48 dev dummy2 metric 21 ip route add 2001:db8:d34d::/64 via 2001:db8:8086::2 dev dummy2 metric 21 RTNETLINK answers: No route to host This change fixes the issue enforcing device lookup in ip6_nh_lookup_table() v1->v2: updated commit message title Fixes: 8c14586fc320 ("net: ipv6: Use passed in table for nexthop lookups") Reported-and-tested-by: Beniamino Galvani Signed-off-by: Paolo Abeni Acked-by: David Ahern Signed-off-by: David S. Miller --- net/ipv6/route.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 969913da494f..520b7884d0c2 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -1782,7 +1782,7 @@ static struct rt6_info *ip6_nh_lookup_table(struct net *net, }; struct fib6_table *table; struct rt6_info *rt; - int flags = 0; + int flags = RT6_LOOKUP_F_IFACE; table = fib6_get_table(net, cfg->fc_table); if (!table) -- cgit v1.2.3 From 4192f672fae559f32d82de72a677701853cc98a7 Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Thu, 23 Jun 2016 16:28:58 +0100 Subject: vsock: make listener child lock ordering explicit There are several places where the listener and pending or accept queue child sockets are accessed at the same time. Lockdep is unhappy that two locks from the same class are held. Tell lockdep that it is safe and document the lock ordering. Originally Claudio Imbrenda sent a similar patch asking whether this is safe. I have audited the code and also covered the vsock_pending_work() function. Suggested-by: Claudio Imbrenda Signed-off-by: Stefan Hajnoczi Signed-off-by: David S. Miller --- net/vmw_vsock/af_vsock.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index b5f1221f48d4..b96ac918e0ba 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -61,6 +61,14 @@ * function will also cleanup rejected sockets, those that reach the connected * state but leave it before they have been accepted. * + * - Lock ordering for pending or accept queue sockets is: + * + * lock_sock(listener); + * lock_sock_nested(pending, SINGLE_DEPTH_NESTING); + * + * Using explicit nested locking keeps lockdep happy since normally only one + * lock of a given class may be taken at a time. + * * - Sockets created by user action will be cleaned up when the user process * calls close(2), causing our release implementation to be called. Our release * implementation will perform some cleanup then drop the last reference so our @@ -443,7 +451,7 @@ void vsock_pending_work(struct work_struct *work) cleanup = true; lock_sock(listener); - lock_sock(sk); + lock_sock_nested(sk, SINGLE_DEPTH_NESTING); if (vsock_is_pending(sk)) { vsock_remove_pending(listener, sk); @@ -1292,7 +1300,7 @@ static int vsock_accept(struct socket *sock, struct socket *newsock, int flags) if (connected) { listener->sk_ack_backlog--; - lock_sock(connected); + lock_sock_nested(connected, SINGLE_DEPTH_NESTING); vconnected = vsock_sk(connected); /* If the listener socket has received an error, then we should -- cgit v1.2.3 From ab2a4bf83902c170d29ba130a8abb5f9d90559e1 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Mon, 27 Jun 2016 10:23:10 -0400 Subject: USB: don't free bandwidth_mutex too early The USB core contains a bug that can show up when a USB-3 host controller is removed. If the primary (USB-2) hcd structure is released before the shared (USB-3) hcd, the core will try to do a double-free of the common bandwidth_mutex. The problem was described in graphical form by Chung-Geol Kim, who first reported it: ================================================= At *remove USB(3.0) Storage sequence <1> --> <5> ((Problem Case)) ================================================= VOLD ------------------------------------|------------ (uevent) ________|_________ |<1> | |dwc3_otg_sm_work | |usb_put_hcd | |peer_hcd(kref=2)| |__________________| ________|_________ |<2> | |New USB BUS #2 | | | |peer_hcd(kref=1) | | | --(Link)-bandXX_mutex| | |__________________| | ___________________ | |<3> | | |dwc3_otg_sm_work | | |usb_put_hcd | | |primary_hcd(kref=1)| | |___________________| | _________|_________ | |<4> | | |New USB BUS #1 | | |hcd_release | | |primary_hcd(kref=0)| | | | | |bandXX_mutex(free) |<- |___________________| (( VOLD )) ______|___________ |<5> | | SCSI | |usb_put_hcd | |peer_hcd(kref=0) | |*hcd_release | |bandXX_mutex(free*)|<- double free |__________________| ================================================= This happens because hcd_release() frees the bandwidth_mutex whenever it sees a primary hcd being released (which is not a very good idea in any case), but in the course of releasing the primary hcd, it changes the pointers in the shared hcd in such a way that the shared hcd will appear to be primary when it gets released. This patch fixes the problem by changing hcd_release() so that it deallocates the bandwidth_mutex only when the _last_ hcd structure referencing it is released. The patch also removes an unnecessary test, so that when an hcd is released, both the shared_hcd and primary_hcd pointers in the hcd's peer will be cleared. Signed-off-by: Alan Stern Reported-by: Chung-Geol Kim Tested-by: Chung-Geol Kim CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 34b837ae1ed7..d2e3f655c26f 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2598,26 +2598,23 @@ EXPORT_SYMBOL_GPL(usb_create_hcd); * Don't deallocate the bandwidth_mutex until the last shared usb_hcd is * deallocated. * - * Make sure to only deallocate the bandwidth_mutex when the primary HCD is - * freed. When hcd_release() is called for either hcd in a peer set - * invalidate the peer's ->shared_hcd and ->primary_hcd pointers to - * block new peering attempts + * Make sure to deallocate the bandwidth_mutex only when the last HCD is + * freed. When hcd_release() is called for either hcd in a peer set, + * invalidate the peer's ->shared_hcd and ->primary_hcd pointers. */ static void hcd_release(struct kref *kref) { struct usb_hcd *hcd = container_of (kref, struct usb_hcd, kref); mutex_lock(&usb_port_peer_mutex); - if (usb_hcd_is_primary_hcd(hcd)) { - kfree(hcd->address0_mutex); - kfree(hcd->bandwidth_mutex); - } if (hcd->shared_hcd) { struct usb_hcd *peer = hcd->shared_hcd; peer->shared_hcd = NULL; - if (peer->primary_hcd == hcd) - peer->primary_hcd = NULL; + peer->primary_hcd = NULL; + } else { + kfree(hcd->address0_mutex); + kfree(hcd->bandwidth_mutex); } mutex_unlock(&usb_port_peer_mutex); kfree(hcd); -- cgit v1.2.3 From 023954351fae0e34ba247cff4d798c98290b20a4 Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Thu, 23 Jun 2016 16:54:46 -0500 Subject: dax: fix offset overflow in dax_io This isn't functionally apparent for some reason, but when we test io at extreme offsets at the end of the loff_t rang, such as in fstests xfs/071, the calculation of "max" in dax_io() can be wrong due to pos + size overflowing. For example, # xfs_io -c "pwrite 9223372036854771712 512" /mnt/test/file enters dax_io with: start 0x7ffffffffffff000 end 0x7ffffffffffff200 and the rounded up "size" variable is 0x1000. This yields: pos + size 0x8000000000000000 (overflows loff_t) end 0x7ffffffffffff200 Due to the overflow, the min() function picks the wrong value for the "max" variable, and when we send (max - pos) into i.e. copy_from_iter_pmem() it is also the wrong value. This somehow(tm) gets magically absorbed without incident, probably because iter->count is correct. But it seems best to fix it up properly by comparing the two values as unsigned. Signed-off-by: Eric Sandeen Signed-off-by: Dan Williams --- fs/dax.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/dax.c b/fs/dax.c index 761495bf5eb9..e207f8f9b700 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -208,7 +208,12 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter, dax.addr += first; size = map_len - first; } - max = min(pos + size, end); + /* + * pos + size is one past the last offset for IO, + * so pos + size can overflow loff_t at extreme offsets. + * Cast to u64 to catch this and get the true minimum. + */ + max = min_t(u64, pos + size, end); } if (iov_iter_rw(iter) == WRITE) { -- cgit v1.2.3 From 5ab666e09541e64ce2fd73411c3b5b9e4ad334b1 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 27 Jun 2016 23:47:15 +0200 Subject: intel_pstate: Do not clear utilization update hooks on policy changes intel_pstate_set_policy() is invoked by the cpufreq core during driver initialization, on changes of policy attributes (minimim and maximum frequency, for example) via sysfs and via CPU notifications from the platform firmware. On some platforms the latter may occur relatively often. Commit bb6ab52f2bef (intel_pstate: Do not set utilization update hook too early) made intel_pstate_set_policy() clear the CPU's utilization update hook before updating the policy attributes for it (and set the hook again after doind that), but that involves invoking synchronize_sched() and adds overhead to the CPU notifications mentioned above and to the sched-RCU handling in general. That extra overhead is arguably not necessary, because updating policy attributes when the CPU's utilization update hook is active should not lead to any adverse effects, so drop the clearing of the hook from intel_pstate_set_policy() and make it check if the hook has been set already when attempting to set it. Fixes: bb6ab52f2bef (intel_pstate: Do not set utilization update hook too early) Reported-by: Jisheng Zhang Tested-by: Jisheng Zhang Tested-by: Doug Smythies Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index fe9dc17ea873..1fa1a32928d7 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -1400,6 +1400,9 @@ static void intel_pstate_set_update_util_hook(unsigned int cpu_num) { struct cpudata *cpu = all_cpu_data[cpu_num]; + if (cpu->update_util_set) + return; + /* Prevent intel_pstate_update_util() from using stale data. */ cpu->sample.time = 0; cpufreq_add_update_util_hook(cpu_num, &cpu->update_util, @@ -1440,8 +1443,6 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy) if (!policy->cpuinfo.max_freq) return -ENODEV; - intel_pstate_clear_update_util_hook(policy->cpu); - pr_debug("set_policy cpuinfo.max %u policy->max %u\n", policy->cpuinfo.max_freq, policy->max); -- cgit v1.2.3 From ca5eda5d3db6026080cff267459625c87c43e9ab Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Mon, 27 Jun 2016 14:50:13 +0900 Subject: cpufreq: dt: call of_node_put() before error out If of_match_node() fails, this init function bails out without calling of_node_put(). Also change of_node_put(of_root) to of_node_put(np); both of them hold the same pointer, but it seems better to call of_node_put() against the node returned by of_find_node_by_path(). Signed-off-by: Masahiro Yamada Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq-dt-platdev.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c index 3646b143bbf5..0bb44d5b5df4 100644 --- a/drivers/cpufreq/cpufreq-dt-platdev.c +++ b/drivers/cpufreq/cpufreq-dt-platdev.c @@ -79,15 +79,16 @@ static const struct of_device_id machines[] __initconst = { static int __init cpufreq_dt_platdev_init(void) { struct device_node *np = of_find_node_by_path("/"); + const struct of_device_id *match; if (!np) return -ENODEV; - if (!of_match_node(machines, np)) + match = of_match_node(machines, np); + of_node_put(np); + if (!match) return -ENODEV; - of_node_put(of_root); - return PTR_ERR_OR_ZERO(platform_device_register_simple("cpufreq-dt", -1, NULL, 0)); } -- cgit v1.2.3 From 742c87bf27d3b715820da6f8a81d6357adbf18f8 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 28 Jun 2016 03:29:29 +0200 Subject: cpufreq: Avoid false-positive WARN_ON()s in cpufreq_update_policy() CPU notifications from the firmware coming in when cpufreq is suspended cause cpufreq_update_current_freq() to return 0 which triggers the WARN_ON() in cpufreq_update_policy() for no reason. Avoid that by checking cpufreq_suspended before calling cpufreq_update_current_freq(). Fixes: c9d9c929e674 (cpufreq: Abort cpufreq_update_current_freq() for cpufreq_suspended set) Signed-off-by: Rafael J. Wysocki Acked-by: Viresh Kumar Cc: 4.6+ # 4.6+ --- drivers/cpufreq/cpufreq.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 9009295f5134..5617c7087d77 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2261,6 +2261,10 @@ int cpufreq_update_policy(unsigned int cpu) * -> ask driver for current freq and notify governors about a change */ if (cpufreq_driver->get && !cpufreq_driver->setpolicy) { + if (cpufreq_suspended) { + ret = -EAGAIN; + goto unlock; + } new_policy.cur = cpufreq_update_current_freq(policy); if (WARN_ON(!new_policy.cur)) { ret = -EIO; -- cgit v1.2.3 From f52e126cc7476196f44f3c313b7d9f0699a881fc Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Tue, 28 Jun 2016 09:42:25 +0530 Subject: ARC: unwind: ensure that .debug_frame is generated (vs. .eh_frame) With recent binutils update to support dwarf CFI pseudo-ops in gas, we now get .eh_frame vs. .debug_frame. Although the call frame info is exactly the same in both, the CIE differs, which the current kernel unwinder can't cope with. This broke both the kernel unwinder as well as loadable modules (latter because of a new unhandled relo R_ARC_32_PCREL from .rela.eh_frame in the module loader) The ideal solution would be to switch unwinder to .eh_frame. For now however we can make do by just ensureing .debug_frame is generated by removing -fasynchronous-unwind-tables .eh_frame generated with -gdwarf-2 -fasynchronous-unwind-tables .debug_frame generated with -gdwarf-2 Fixes STAR 9001058196 Cc: stable@vger.kernel.org Signed-off-by: Vineet Gupta --- arch/arc/Makefile | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/arc/Makefile b/arch/arc/Makefile index d4df6be66d58..85814e74677d 100644 --- a/arch/arc/Makefile +++ b/arch/arc/Makefile @@ -66,8 +66,6 @@ endif endif -cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables - # By default gcc 4.8 generates dwarf4 which kernel unwinder can't grok ifeq ($(atleast_gcc48),y) cflags-$(CONFIG_ARC_DW2_UNWIND) += -gdwarf-2 -- cgit v1.2.3 From 9bd54517ee86cb164c734f72ea95aeba4804f10b Mon Sep 17 00:00:00 2001 From: Alexey Brodkin Date: Thu, 23 Jun 2016 11:00:39 +0300 Subject: arc: unwind: warn only once if DW2_UNWIND is disabled If CONFIG_ARC_DW2_UNWIND is disabled every time arc_unwind_core() gets called following message gets printed in debug console: ----------------->8--------------- CONFIG_ARC_DW2_UNWIND needs to be enabled ----------------->8--------------- That message makes sense if user indeed wants to see a backtrace or get nice function call-graphs in perf but what if user disabled unwinder for the purpose? Why pollute his debug console? So instead we'll warn user about possibly missing feature once and let him decide if that was what he or she really wanted. Signed-off-by: Alexey Brodkin Cc: stable@vger.kernel.org Signed-off-by: Vineet Gupta --- arch/arc/kernel/stacktrace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arc/kernel/stacktrace.c b/arch/arc/kernel/stacktrace.c index e0efff15a5ae..b9192a653b7e 100644 --- a/arch/arc/kernel/stacktrace.c +++ b/arch/arc/kernel/stacktrace.c @@ -142,7 +142,7 @@ arc_unwind_core(struct task_struct *tsk, struct pt_regs *regs, * prelogue is setup (callee regs saved and then fp set and not other * way around */ - pr_warn("CONFIG_ARC_DW2_UNWIND needs to be enabled\n"); + pr_warn_once("CONFIG_ARC_DW2_UNWIND needs to be enabled\n"); return 0; #endif -- cgit v1.2.3 From 5419447e2142d6ed68c9f5c1a28630b3a290a845 Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Mon, 13 Jun 2016 17:03:48 +0200 Subject: Revert "s390/kdump: Clear subchannel ID to signal non-CCW/SCSI IPL" This reverts commit 852ffd0f4e23248b47531058e531066a988434b5. There are use cases where an intermediate boot kernel (1) uses kexec to boot the final production kernel (2). For this scenario we should provide the original boot information to the production kernel (2). Therefore clearing the boot information during kexec() should not be done. Cc: stable@vger.kernel.org # v3.17+ Reported-by: Steffen Maier Signed-off-by: Michael Holzheu Reviewed-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/ipl.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index f20abdb5630a..d14069d4b88d 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -2064,12 +2064,5 @@ void s390_reset_system(void) S390_lowcore.program_new_psw.addr = (unsigned long) s390_base_pgm_handler; - /* - * Clear subchannel ID and number to signal new kernel that no CCW or - * SCSI IPL has been done (for kexec and kdump) - */ - S390_lowcore.subchannel_id = 0; - S390_lowcore.subchannel_nr = 0; - do_reset_calls(); } -- cgit v1.2.3 From bcf4dd5f9ee096bd1510f838dd4750c35df4e38b Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Mon, 27 Jun 2016 17:06:45 +0200 Subject: s390: fix test_fp_ctl inline assembly contraints The test_fp_ctl function is used to test if a given value is a valid floating-point control. The inline assembly in test_fp_ctl uses an incorrect constraint for the 'orig_fpc' variable. If the compiler chooses the same register for 'fpc' and 'orig_fpc' the test_fp_ctl() function always returns true. This allows user space to trigger kernel oopses with invalid floating-point control values on the signal stack. This problem has been introduced with git commit 4725c86055f5bbdcdf "s390: fix save and restore of the floating-point-control register" Cc: stable@vger.kernel.org # v3.13+ Reviewed-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/fpu/api.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/s390/include/asm/fpu/api.h b/arch/s390/include/asm/fpu/api.h index 5e04f3cbd320..8ae236b0f80b 100644 --- a/arch/s390/include/asm/fpu/api.h +++ b/arch/s390/include/asm/fpu/api.h @@ -22,7 +22,7 @@ static inline int test_fp_ctl(u32 fpc) " la %0,0\n" "1:\n" EX_TABLE(0b,1b) - : "=d" (rc), "=d" (orig_fpc) + : "=d" (rc), "=&d" (orig_fpc) : "d" (fpc), "0" (-EINVAL)); return rc; } -- cgit v1.2.3 From 70a0dec45174c976c64b4c8c1d0898581f759948 Mon Sep 17 00:00:00 2001 From: Tom Goff Date: Thu, 23 Jun 2016 16:11:57 -0400 Subject: ipmr/ip6mr: Initialize the last assert time of mfc entries. This fixes wrong-interface signaling on 32-bit platforms for entries created when jiffies > 2^31 + MFC_ASSERT_THRESH. Signed-off-by: Tom Goff Signed-off-by: David S. Miller --- net/ipv4/ipmr.c | 4 +++- net/ipv6/ip6mr.c | 1 + 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index 21a38e296fe2..5ad48ec77710 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -891,8 +891,10 @@ static struct mfc_cache *ipmr_cache_alloc(void) { struct mfc_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_KERNEL); - if (c) + if (c) { + c->mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1; c->mfc_un.res.minvif = MAXVIFS; + } return c; } diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index f2e2013f8346..487ef3bc7bbc 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -1074,6 +1074,7 @@ static struct mfc6_cache *ip6mr_cache_alloc(void) struct mfc6_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_KERNEL); if (!c) return NULL; + c->mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1; c->mfc_un.res.minvif = MAXMIFS; return c; } -- cgit v1.2.3 From 0622cab0341cac6b30da177b0faa39fae0680e71 Mon Sep 17 00:00:00 2001 From: Jay Vosburgh Date: Thu, 23 Jun 2016 14:20:51 -0700 Subject: bonding: fix 802.3ad aggregator reselection Since commit 7bb11dc9f59d ("bonding: unify all places where actor-oper key needs to be updated."), the logic in bonding to handle selection between multiple aggregators has not functioned. This affects only configurations wherein the bonding slaves connect to two discrete aggregators (e.g., two independent switches, each with LACP enabled), thus creating two separate aggregation groups within a single bond. The cause is a change in 7bb11dc9f59d to no longer set AD_PORT_BEGIN on a port after a link state change, which would cause the port to be reselected for attachment to an aggregator as if were newly added to the bond. We cannot restore the prior behavior, as it contradicts IEEE 802.1AX 5.4.12, which requires ports that "become inoperable" (lose carrier, setting port_enabled=false as per 802.1AX 5.4.7) to remain selected (i.e., assigned to the aggregator). As the port now remains selected, the aggregator selection logic is not invoked. A side effect of this change is that aggregators in bonding will now contain ports that are link down. The aggregator selection logic does not currently handle this situation correctly, causing incorrect aggregator selection. This patch makes two changes to repair the aggregator selection logic in bonding to function as documented and within the confines of the standard: First, the aggregator selection and related logic now utilizes the number of active ports per aggregator, not the number of selected ports (as some selected ports may be down). The ad_select "bandwidth" and "count" options only consider ports that are link up. Second, on any carrier state change of any slave, the aggregator selection logic is explicitly called to insure the correct aggregator is active. Reported-by: Veli-Matti Lintu Fixes: 7bb11dc9f59d ("bonding: unify all places where actor-oper key needs to be updated.") Signed-off-by: Jay Vosburgh Signed-off-by: David S. Miller --- drivers/net/bonding/bond_3ad.c | 64 +++++++++++++++++++++++++++++------------- 1 file changed, 45 insertions(+), 19 deletions(-) diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c index b9304a295f86..ca81f46ea1aa 100644 --- a/drivers/net/bonding/bond_3ad.c +++ b/drivers/net/bonding/bond_3ad.c @@ -657,6 +657,20 @@ static void __set_agg_ports_ready(struct aggregator *aggregator, int val) } } +static int __agg_active_ports(struct aggregator *agg) +{ + struct port *port; + int active = 0; + + for (port = agg->lag_ports; port; + port = port->next_port_in_aggregator) { + if (port->is_enabled) + active++; + } + + return active; +} + /** * __get_agg_bandwidth - get the total bandwidth of an aggregator * @aggregator: the aggregator we're looking at @@ -664,39 +678,40 @@ static void __set_agg_ports_ready(struct aggregator *aggregator, int val) */ static u32 __get_agg_bandwidth(struct aggregator *aggregator) { + int nports = __agg_active_ports(aggregator); u32 bandwidth = 0; - if (aggregator->num_of_ports) { + if (nports) { switch (__get_link_speed(aggregator->lag_ports)) { case AD_LINK_SPEED_1MBPS: - bandwidth = aggregator->num_of_ports; + bandwidth = nports; break; case AD_LINK_SPEED_10MBPS: - bandwidth = aggregator->num_of_ports * 10; + bandwidth = nports * 10; break; case AD_LINK_SPEED_100MBPS: - bandwidth = aggregator->num_of_ports * 100; + bandwidth = nports * 100; break; case AD_LINK_SPEED_1000MBPS: - bandwidth = aggregator->num_of_ports * 1000; + bandwidth = nports * 1000; break; case AD_LINK_SPEED_2500MBPS: - bandwidth = aggregator->num_of_ports * 2500; + bandwidth = nports * 2500; break; case AD_LINK_SPEED_10000MBPS: - bandwidth = aggregator->num_of_ports * 10000; + bandwidth = nports * 10000; break; case AD_LINK_SPEED_20000MBPS: - bandwidth = aggregator->num_of_ports * 20000; + bandwidth = nports * 20000; break; case AD_LINK_SPEED_40000MBPS: - bandwidth = aggregator->num_of_ports * 40000; + bandwidth = nports * 40000; break; case AD_LINK_SPEED_56000MBPS: - bandwidth = aggregator->num_of_ports * 56000; + bandwidth = nports * 56000; break; case AD_LINK_SPEED_100000MBPS: - bandwidth = aggregator->num_of_ports * 100000; + bandwidth = nports * 100000; break; default: bandwidth = 0; /* to silence the compiler */ @@ -1530,10 +1545,10 @@ static struct aggregator *ad_agg_selection_test(struct aggregator *best, switch (__get_agg_selection_mode(curr->lag_ports)) { case BOND_AD_COUNT: - if (curr->num_of_ports > best->num_of_ports) + if (__agg_active_ports(curr) > __agg_active_ports(best)) return curr; - if (curr->num_of_ports < best->num_of_ports) + if (__agg_active_ports(curr) < __agg_active_ports(best)) return best; /*FALLTHROUGH*/ @@ -1561,8 +1576,14 @@ static int agg_device_up(const struct aggregator *agg) if (!port) return 0; - return netif_running(port->slave->dev) && - netif_carrier_ok(port->slave->dev); + for (port = agg->lag_ports; port; + port = port->next_port_in_aggregator) { + if (netif_running(port->slave->dev) && + netif_carrier_ok(port->slave->dev)) + return 1; + } + + return 0; } /** @@ -1610,7 +1631,7 @@ static void ad_agg_selection_logic(struct aggregator *agg, agg->is_active = 0; - if (agg->num_of_ports && agg_device_up(agg)) + if (__agg_active_ports(agg) && agg_device_up(agg)) best = ad_agg_selection_test(best, agg); } @@ -1622,7 +1643,7 @@ static void ad_agg_selection_logic(struct aggregator *agg, * answering partner. */ if (active && active->lag_ports && - active->lag_ports->is_enabled && + __agg_active_ports(active) && (__agg_has_partner(active) || (!__agg_has_partner(active) && !__agg_has_partner(best)))) { @@ -2133,7 +2154,7 @@ void bond_3ad_unbind_slave(struct slave *slave) else temp_aggregator->lag_ports = temp_port->next_port_in_aggregator; temp_aggregator->num_of_ports--; - if (temp_aggregator->num_of_ports == 0) { + if (__agg_active_ports(temp_aggregator) == 0) { select_new_active_agg = temp_aggregator->is_active; ad_clear_agg(temp_aggregator); if (select_new_active_agg) { @@ -2432,7 +2453,9 @@ void bond_3ad_adapter_speed_duplex_changed(struct slave *slave) */ void bond_3ad_handle_link_change(struct slave *slave, char link) { + struct aggregator *agg; struct port *port; + bool dummy; port = &(SLAVE_AD_INFO(slave)->port); @@ -2459,6 +2482,9 @@ void bond_3ad_handle_link_change(struct slave *slave, char link) port->is_enabled = false; ad_update_actor_keys(port, true); } + agg = __get_first_agg(port); + ad_agg_selection_logic(agg, &dummy); + netdev_dbg(slave->bond->dev, "Port %d changed link status to %s\n", port->actor_port_number, link == BOND_LINK_UP ? "UP" : "DOWN"); @@ -2499,7 +2525,7 @@ int bond_3ad_set_carrier(struct bonding *bond) active = __get_active_agg(&(SLAVE_AD_INFO(first_slave)->aggregator)); if (active) { /* are enough slaves available to consider link up? */ - if (active->num_of_ports < bond->params.min_links) { + if (__agg_active_ports(active) < bond->params.min_links) { if (netif_carrier_ok(bond->dev)) { netif_carrier_off(bond->dev); goto out; -- cgit v1.2.3 From d2b13233879ca1268a1c027d4573109e5a777811 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Thu, 23 Jun 2016 14:23:12 -0700 Subject: net: bgmac: Fix SOF bit checking We are checking for the Start of Frame bit in the ctl1 word, while this bit is set in the ctl0 word instead. Read the ctl0 word and update the check to verify that. Fixes: 9cde94506eac ("bgmac: implement scatter/gather support") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bgmac.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c index ee5f431ab32a..70926c611f25 100644 --- a/drivers/net/ethernet/broadcom/bgmac.c +++ b/drivers/net/ethernet/broadcom/bgmac.c @@ -267,15 +267,16 @@ static void bgmac_dma_tx_free(struct bgmac *bgmac, struct bgmac_dma_ring *ring) while (ring->start != ring->end) { int slot_idx = ring->start % BGMAC_TX_RING_SLOTS; struct bgmac_slot_info *slot = &ring->slots[slot_idx]; - u32 ctl1; + u32 ctl0, ctl1; int len; if (slot_idx == empty_slot) break; + ctl0 = le32_to_cpu(ring->cpu_base[slot_idx].ctl0); ctl1 = le32_to_cpu(ring->cpu_base[slot_idx].ctl1); len = ctl1 & BGMAC_DESC_CTL1_LEN; - if (ctl1 & BGMAC_DESC_CTL0_SOF) + if (ctl0 & BGMAC_DESC_CTL0_SOF) /* Unmap no longer used buffer */ dma_unmap_single(dma_dev, slot->dma_addr, len, DMA_TO_DEVICE); -- cgit v1.2.3 From c3897f2a69e54dd113fc9abd2daf872e5b495798 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Thu, 23 Jun 2016 14:25:32 -0700 Subject: net: bgmac: Start transmit queue in bgmac_open The driver does not start the transmit queue in bgmac_open(). If the queue was stopped prior to closing then re-opening the interface, we would never be able to wake-up again. Fixes: dd4544f05469 ("bgmac: driver for GBit MAC core on BCMA bus") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bgmac.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c index 70926c611f25..85cd07f72ffb 100644 --- a/drivers/net/ethernet/broadcom/bgmac.c +++ b/drivers/net/ethernet/broadcom/bgmac.c @@ -1314,6 +1314,9 @@ static int bgmac_open(struct net_device *net_dev) phy_start(bgmac->phy_dev); netif_carrier_on(net_dev); + + netif_start_queue(net_dev); + return 0; } -- cgit v1.2.3 From 3894396e64994f31c3ef5c7e6f63dded0593e567 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Thu, 23 Jun 2016 14:25:33 -0700 Subject: net: bgmac: Remove superflous netif_carrier_on() bgmac_open() calls phy_start() to initialize the PHY state machine, which will set the interface's carrier state accordingly, no need to force that as this could be conflicting with the PHY state determined by PHYLIB. Fixes: dd4544f05469 ("bgmac: driver for GBit MAC core on BCMA bus") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bgmac.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c index 85cd07f72ffb..a6333d38ecc0 100644 --- a/drivers/net/ethernet/broadcom/bgmac.c +++ b/drivers/net/ethernet/broadcom/bgmac.c @@ -1313,8 +1313,6 @@ static int bgmac_open(struct net_device *net_dev) phy_start(bgmac->phy_dev); - netif_carrier_on(net_dev); - netif_start_queue(net_dev); return 0; -- cgit v1.2.3 From f299a02d5f13c4deb52c1a7ddf2b42630fe6294a Mon Sep 17 00:00:00 2001 From: Wang Sheng-Hui Date: Fri, 24 Jun 2016 08:52:11 +0800 Subject: net/mlx5: use mlx5_buf_alloc_node instead of mlx5_buf_alloc in mlx5_wq_ll_create Commit 311c7c71c9bb ("net/mlx5e: Allocate DMA coherent memory on reader NUMA node") introduced mlx5_*_alloc_node() but missed changing some calling and warn messages. This patch introduces 2 changes: * Use mlx5_buf_alloc_node() instead of mlx5_buf_alloc() in mlx5_wq_ll_create() * Update the failure warn messages with _node postfix for mlx5_*_alloc function names Fixes: 311c7c71c9bb ("net/mlx5e: Allocate DMA coherent memory on reader NUMA node") Signed-off-by: Wang Sheng-Hui Acked-By: Saeed Mahameed Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx5/core/wq.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/wq.c b/drivers/net/ethernet/mellanox/mlx5/core/wq.c index ce21ee5b2357..821a087c7ae2 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/wq.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/wq.c @@ -75,14 +75,14 @@ int mlx5_wq_cyc_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param, err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node); if (err) { - mlx5_core_warn(mdev, "mlx5_db_alloc() failed, %d\n", err); + mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err); return err; } err = mlx5_buf_alloc_node(mdev, mlx5_wq_cyc_get_byte_size(wq), &wq_ctrl->buf, param->buf_numa_node); if (err) { - mlx5_core_warn(mdev, "mlx5_buf_alloc() failed, %d\n", err); + mlx5_core_warn(mdev, "mlx5_buf_alloc_node() failed, %d\n", err); goto err_db_free; } @@ -111,14 +111,14 @@ int mlx5_cqwq_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param, err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node); if (err) { - mlx5_core_warn(mdev, "mlx5_db_alloc() failed, %d\n", err); + mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err); return err; } err = mlx5_buf_alloc_node(mdev, mlx5_cqwq_get_byte_size(wq), &wq_ctrl->buf, param->buf_numa_node); if (err) { - mlx5_core_warn(mdev, "mlx5_buf_alloc() failed, %d\n", err); + mlx5_core_warn(mdev, "mlx5_buf_alloc_node() failed, %d\n", err); goto err_db_free; } @@ -148,13 +148,14 @@ int mlx5_wq_ll_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param, err = mlx5_db_alloc_node(mdev, &wq_ctrl->db, param->db_numa_node); if (err) { - mlx5_core_warn(mdev, "mlx5_db_alloc() failed, %d\n", err); + mlx5_core_warn(mdev, "mlx5_db_alloc_node() failed, %d\n", err); return err; } - err = mlx5_buf_alloc(mdev, mlx5_wq_ll_get_byte_size(wq), &wq_ctrl->buf); + err = mlx5_buf_alloc_node(mdev, mlx5_wq_ll_get_byte_size(wq), + &wq_ctrl->buf, param->buf_numa_node); if (err) { - mlx5_core_warn(mdev, "mlx5_buf_alloc() failed, %d\n", err); + mlx5_core_warn(mdev, "mlx5_buf_alloc_node() failed, %d\n", err); goto err_db_free; } -- cgit v1.2.3 From 126e7557328a1cd576be4fca95b133a2695283ff Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Sun, 19 Jun 2016 23:51:02 +0300 Subject: mac80211: Fix mesh estab_plinks counting in STA removal case If a user space program (e.g., wpa_supplicant) deletes a STA entry that is currently in NL80211_PLINK_ESTAB state, the number of established plinks counter was not decremented and this could result in rejecting new plink establishment before really hitting the real maximum plink limit. For !user_mpm case, this decrementation is handled by mesh_plink_deactive(). Fix this by decrementing estab_plinks on STA deletion (mesh_sta_cleanup() gets called from there) so that the counter has a correct value and the Beacon frame advertisement in Mesh Configuration element shows the proper value for capability to accept additional peers. Cc: stable@vger.kernel.org Signed-off-by: Jouni Malinen Signed-off-by: Johannes Berg --- net/mac80211/mesh.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index 21b1fdf5d01d..6a1603bcdced 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -148,14 +148,17 @@ u32 mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata) void mesh_sta_cleanup(struct sta_info *sta) { struct ieee80211_sub_if_data *sdata = sta->sdata; - u32 changed; + u32 changed = 0; /* * maybe userspace handles peer allocation and peering, but in either * case the beacon is still generated by the kernel and we might need * an update. */ - changed = mesh_accept_plinks_update(sdata); + if (sdata->u.mesh.user_mpm && + sta->mesh->plink_state == NL80211_PLINK_ESTAB) + changed |= mesh_plink_dec_estab_count(sdata); + changed |= mesh_accept_plinks_update(sdata); if (!sdata->u.mesh.user_mpm) { changed |= mesh_plink_deactivate(sta); del_timer_sync(&sta->mesh->plink_timer); -- cgit v1.2.3 From cca0e542e02e48cce541a49c4046ec094ec27c1e Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Fri, 24 Jun 2016 14:49:02 +1000 Subject: powerpc/eeh: Fix wrong argument passed to eeh_rmv_device() When calling eeh_rmv_device() in eeh_reset_device() for partial hotplug case, @rmv_data instead of its address is the proper argument. Otherwise, the stack frame is corrupted when writing to @rmv_data (actually its address) in eeh_rmv_device(). It results in kernel crash as observed. This fixes the issue by passing @rmv_data, not its address to eeh_rmv_device() in eeh_reset_device(). Fixes: 67086e32b564 ("powerpc/eeh: powerpc/eeh: Support error recovery for VF PE") Reported-by: Pridhiviraj Paidipeddi Signed-off-by: Gavin Shan Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/eeh_driver.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c index b5f73cb5eeb6..d70101e1e25c 100644 --- a/arch/powerpc/kernel/eeh_driver.c +++ b/arch/powerpc/kernel/eeh_driver.c @@ -647,7 +647,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus, pci_unlock_rescan_remove(); } } else if (frozen_bus) { - eeh_pe_dev_traverse(pe, eeh_rmv_device, &rmv_data); + eeh_pe_dev_traverse(pe, eeh_rmv_device, rmv_data); } /* -- cgit v1.2.3 From 62630ea768869beeb1e514b0bf5607a0c9b93d12 Mon Sep 17 00:00:00 2001 From: Allen Hung Date: Thu, 23 Jun 2016 16:31:29 +0800 Subject: Revert "HID: multitouch: enable palm rejection if device implements confidence usage" This reverts commit 25a84db15b3f ("HID: multitouch: enable palm rejection if device implements confidence usage") The commit enables palm rejection for Win8 Precision Touchpad devices but the quirk MT_QUIRK_VALID_IS_CONFIDENCE it is using is not working very properly. This quirk is originally designed for some WIn7 touchscreens. Use of this for a Win8 Precision Touchpad will cause unexpected pointer jumping problem. Cc: stable@vger.kernel.org # v4.5+ Reviewed-by: Benjamin Tissoires Tested-by: Andy Lutomirski # XPS 13 9350, BIOS 1.4.3 Signed-off-by: Allen Hung Signed-off-by: Jiri Kosina --- drivers/hid/hid-multitouch.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 95b7d61d9910..4ef700688657 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -502,11 +502,6 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, mt_store_field(usage, td, hi); return 1; case HID_DG_CONFIDENCE: - if (cls->name == MT_CLS_WIN_8 && - field->application == HID_DG_TOUCHPAD) { - cls->quirks &= ~MT_QUIRK_ALWAYS_VALID; - cls->quirks |= MT_QUIRK_VALID_IS_CONFIDENCE; - } mt_store_field(usage, td, hi); return 1; case HID_DG_TIPSWITCH: -- cgit v1.2.3 From 6dd2e27a103d716921cc4a1a96a9adc0a8e3ab57 Mon Sep 17 00:00:00 2001 From: Allen Hung Date: Thu, 23 Jun 2016 16:31:30 +0800 Subject: HID: multitouch: enable palm rejection for Windows Precision Touchpad The usage Confidence is mandary to Windows Precision Touchpad devices. If it is examined in input_mapping on a WIndows Precision Touchpad, a new add quirk MT_QUIRK_CONFIDENCE desgned for such devices will be applied to the device. A touch with the confidence bit is not set is determined as invalid. Tested on Dell XPS13 9343 Cc: stable@vger.kernel.org # v4.5+ Reviewed-by: Benjamin Tissoires Tested-by: Andy Lutomirski # XPS 13 9350, BIOS 1.4.3 Signed-off-by: Allen Hung Signed-off-by: Jiri Kosina --- drivers/hid/hid-multitouch.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 4ef700688657..fb6f1f447279 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -61,6 +61,7 @@ MODULE_LICENSE("GPL"); #define MT_QUIRK_ALWAYS_VALID (1 << 4) #define MT_QUIRK_VALID_IS_INRANGE (1 << 5) #define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 6) +#define MT_QUIRK_CONFIDENCE (1 << 7) #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8) #define MT_QUIRK_NO_AREA (1 << 9) #define MT_QUIRK_IGNORE_DUPLICATES (1 << 10) @@ -78,6 +79,7 @@ struct mt_slot { __s32 contactid; /* the device ContactID assigned to this slot */ bool touch_state; /* is the touch valid? */ bool inrange_state; /* is the finger in proximity of the sensor? */ + bool confidence_state; /* is the touch made by a finger? */ }; struct mt_class { @@ -502,6 +504,9 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, mt_store_field(usage, td, hi); return 1; case HID_DG_CONFIDENCE: + if (cls->name == MT_CLS_WIN_8 && + field->application == HID_DG_TOUCHPAD) + cls->quirks |= MT_QUIRK_CONFIDENCE; mt_store_field(usage, td, hi); return 1; case HID_DG_TIPSWITCH: @@ -614,6 +619,7 @@ static void mt_complete_slot(struct mt_device *td, struct input_dev *input) return; if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) { + int active; int slotnum = mt_compute_slot(td, input); struct mt_slot *s = &td->curdata; struct input_mt *mt = input->mt; @@ -628,10 +634,14 @@ static void mt_complete_slot(struct mt_device *td, struct input_dev *input) return; } + if (!(td->mtclass.quirks & MT_QUIRK_CONFIDENCE)) + s->confidence_state = 1; + active = (s->touch_state || s->inrange_state) && + s->confidence_state; + input_mt_slot(input, slotnum); - input_mt_report_slot_state(input, MT_TOOL_FINGER, - s->touch_state || s->inrange_state); - if (s->touch_state || s->inrange_state) { + input_mt_report_slot_state(input, MT_TOOL_FINGER, active); + if (active) { /* this finger is in proximity of the sensor */ int wide = (s->w > s->h); /* divided by two to match visual scale of touch */ @@ -696,6 +706,8 @@ static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field, td->curdata.touch_state = value; break; case HID_DG_CONFIDENCE: + if (quirks & MT_QUIRK_CONFIDENCE) + td->curdata.confidence_state = value; if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE) td->curvalid = value; break; -- cgit v1.2.3 From 0888d5f3c0f183ea6177355752ada433d370ac89 Mon Sep 17 00:00:00 2001 From: daniel Date: Fri, 24 Jun 2016 12:35:18 +0200 Subject: Bridge: Fix ipv6 mc snooping if bridge has no ipv6 address MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The bridge is falsly dropping ipv6 mulitcast packets if there is: 1. No ipv6 address assigned on the brigde. 2. No external mld querier present. 3. The internal querier enabled. When the bridge fails to build mld queries, because it has no ipv6 address, it slilently returns, but keeps the local querier enabled. This specific case causes confusing packet loss. Ipv6 multicast snooping can only work if: a) An external querier is present OR b) The bridge has an ipv6 address an is capable of sending own queries Otherwise it has to forward/flood the ipv6 multicast traffic, because snooping cannot work. This patch fixes the issue by adding a flag to the bridge struct that indicates that there is currently no ipv6 address assinged to the bridge and returns a false state for the local querier in __br_multicast_querier_exists(). Special thanks to Linus Lüssing. Fixes: d1d81d4c3dd8 ("bridge: check return value of ipv6_dev_get_saddr()") Signed-off-by: Daniel Danzberger Acked-by: Linus Lüssing Signed-off-by: David S. Miller --- net/bridge/br_multicast.c | 4 ++++ net/bridge/br_private.h | 23 +++++++++++++++++++---- 2 files changed, 23 insertions(+), 4 deletions(-) diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 6852f3c7009c..43844144c9c4 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -464,8 +464,11 @@ static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br, if (ipv6_dev_get_saddr(dev_net(br->dev), br->dev, &ip6h->daddr, 0, &ip6h->saddr)) { kfree_skb(skb); + br->has_ipv6_addr = 0; return NULL; } + + br->has_ipv6_addr = 1; ipv6_eth_mc_map(&ip6h->daddr, eth->h_dest); hopopt = (u8 *)(ip6h + 1); @@ -1745,6 +1748,7 @@ void br_multicast_init(struct net_bridge *br) br->ip6_other_query.delay_time = 0; br->ip6_querier.port = NULL; #endif + br->has_ipv6_addr = 1; spin_lock_init(&br->multicast_lock); setup_timer(&br->multicast_router_timer, diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index c7fb5d7a7218..52edecf3c294 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -314,6 +314,7 @@ struct net_bridge u8 multicast_disabled:1; u8 multicast_querier:1; u8 multicast_query_use_ifaddr:1; + u8 has_ipv6_addr:1; u32 hash_elasticity; u32 hash_max; @@ -588,10 +589,22 @@ static inline bool br_multicast_is_router(struct net_bridge *br) static inline bool __br_multicast_querier_exists(struct net_bridge *br, - struct bridge_mcast_other_query *querier) + struct bridge_mcast_other_query *querier, + const bool is_ipv6) { + bool own_querier_enabled; + + if (br->multicast_querier) { + if (is_ipv6 && !br->has_ipv6_addr) + own_querier_enabled = false; + else + own_querier_enabled = true; + } else { + own_querier_enabled = false; + } + return time_is_before_jiffies(querier->delay_time) && - (br->multicast_querier || timer_pending(&querier->timer)); + (own_querier_enabled || timer_pending(&querier->timer)); } static inline bool br_multicast_querier_exists(struct net_bridge *br, @@ -599,10 +612,12 @@ static inline bool br_multicast_querier_exists(struct net_bridge *br, { switch (eth->h_proto) { case (htons(ETH_P_IP)): - return __br_multicast_querier_exists(br, &br->ip4_other_query); + return __br_multicast_querier_exists(br, + &br->ip4_other_query, false); #if IS_ENABLED(CONFIG_IPV6) case (htons(ETH_P_IPV6)): - return __br_multicast_querier_exists(br, &br->ip6_other_query); + return __br_multicast_querier_exists(br, + &br->ip6_other_query, true); #endif default: return false; -- cgit v1.2.3 From ab8ed951080e8f59b1da4ea10ac7c05ba24a3cbd Mon Sep 17 00:00:00 2001 From: Aaron Campbell Date: Fri, 24 Jun 2016 10:05:32 -0300 Subject: connector: fix out-of-order cn_proc netlink message delivery The proc connector messages include a sequence number, allowing userspace programs to detect lost messages. However, performing this detection is currently more difficult than necessary, since netlink messages can be delivered to the application out-of-order. To fix this, leave pre-emption disabled during cn_netlink_send(), and use GFP_NOWAIT. The following was written as a test case. Building the kernel w/ make -j32 proved a reliable way to generate out-of-order cn_proc messages. int main(int argc, char *argv[]) { static uint32_t last_seq[CPU_SETSIZE], seq; int cpu, fd; struct sockaddr_nl sa; struct __attribute__((aligned(NLMSG_ALIGNTO))) { struct nlmsghdr nl_hdr; struct __attribute__((__packed__)) { struct cn_msg cn_msg; struct proc_event cn_proc; }; } rmsg; struct __attribute__((aligned(NLMSG_ALIGNTO))) { struct nlmsghdr nl_hdr; struct __attribute__((__packed__)) { struct cn_msg cn_msg; enum proc_cn_mcast_op cn_mcast; }; } smsg; fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR); if (fd < 0) { perror("socket"); } sa.nl_family = AF_NETLINK; sa.nl_groups = CN_IDX_PROC; sa.nl_pid = getpid(); if (bind(fd, (struct sockaddr *)&sa, sizeof(sa)) < 0) { perror("bind"); } memset(&smsg, 0, sizeof(smsg)); smsg.nl_hdr.nlmsg_len = sizeof(smsg); smsg.nl_hdr.nlmsg_pid = getpid(); smsg.nl_hdr.nlmsg_type = NLMSG_DONE; smsg.cn_msg.id.idx = CN_IDX_PROC; smsg.cn_msg.id.val = CN_VAL_PROC; smsg.cn_msg.len = sizeof(enum proc_cn_mcast_op); smsg.cn_mcast = PROC_CN_MCAST_LISTEN; if (send(fd, &smsg, sizeof(smsg), 0) != sizeof(smsg)) { perror("send"); } while (recv(fd, &rmsg, sizeof(rmsg), 0) == sizeof(rmsg)) { cpu = rmsg.cn_proc.cpu; if (cpu < 0) { continue; } seq = rmsg.cn_msg.seq; if ((last_seq[cpu] != 0) && (seq != last_seq[cpu] + 1)) { printf("out-of-order seq=%d on cpu=%d\n", seq, cpu); } last_seq[cpu] = seq; } /* NOTREACHED */ perror("recv"); return -1; } Signed-off-by: Aaron Campbell Signed-off-by: David S. Miller --- drivers/connector/cn_proc.c | 43 ++++++++++++++++++++++--------------------- 1 file changed, 22 insertions(+), 21 deletions(-) diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c index 15d06fcf0b50..b02f9c606e0b 100644 --- a/drivers/connector/cn_proc.c +++ b/drivers/connector/cn_proc.c @@ -56,11 +56,21 @@ static struct cb_id cn_proc_event_id = { CN_IDX_PROC, CN_VAL_PROC }; /* proc_event_counts is used as the sequence number of the netlink message */ static DEFINE_PER_CPU(__u32, proc_event_counts) = { 0 }; -static inline void get_seq(__u32 *ts, int *cpu) +static inline void send_msg(struct cn_msg *msg) { preempt_disable(); - *ts = __this_cpu_inc_return(proc_event_counts) - 1; - *cpu = smp_processor_id(); + + msg->seq = __this_cpu_inc_return(proc_event_counts) - 1; + ((struct proc_event *)msg->data)->cpu = smp_processor_id(); + + /* + * Preemption remains disabled during send to ensure the messages are + * ordered according to their sequence numbers. + * + * If cn_netlink_send() fails, the data is not sent. + */ + cn_netlink_send(msg, 0, CN_IDX_PROC, GFP_NOWAIT); + preempt_enable(); } @@ -77,7 +87,6 @@ void proc_fork_connector(struct task_struct *task) msg = buffer_to_cn_msg(buffer); ev = (struct proc_event *)msg->data; memset(&ev->event_data, 0, sizeof(ev->event_data)); - get_seq(&msg->seq, &ev->cpu); ev->timestamp_ns = ktime_get_ns(); ev->what = PROC_EVENT_FORK; rcu_read_lock(); @@ -92,8 +101,7 @@ void proc_fork_connector(struct task_struct *task) msg->ack = 0; /* not used */ msg->len = sizeof(*ev); msg->flags = 0; /* not used */ - /* If cn_netlink_send() failed, the data is not sent */ - cn_netlink_send(msg, 0, CN_IDX_PROC, GFP_KERNEL); + send_msg(msg); } void proc_exec_connector(struct task_struct *task) @@ -108,7 +116,6 @@ void proc_exec_connector(struct task_struct *task) msg = buffer_to_cn_msg(buffer); ev = (struct proc_event *)msg->data; memset(&ev->event_data, 0, sizeof(ev->event_data)); - get_seq(&msg->seq, &ev->cpu); ev->timestamp_ns = ktime_get_ns(); ev->what = PROC_EVENT_EXEC; ev->event_data.exec.process_pid = task->pid; @@ -118,7 +125,7 @@ void proc_exec_connector(struct task_struct *task) msg->ack = 0; /* not used */ msg->len = sizeof(*ev); msg->flags = 0; /* not used */ - cn_netlink_send(msg, 0, CN_IDX_PROC, GFP_KERNEL); + send_msg(msg); } void proc_id_connector(struct task_struct *task, int which_id) @@ -150,14 +157,13 @@ void proc_id_connector(struct task_struct *task, int which_id) return; } rcu_read_unlock(); - get_seq(&msg->seq, &ev->cpu); ev->timestamp_ns = ktime_get_ns(); memcpy(&msg->id, &cn_proc_event_id, sizeof(msg->id)); msg->ack = 0; /* not used */ msg->len = sizeof(*ev); msg->flags = 0; /* not used */ - cn_netlink_send(msg, 0, CN_IDX_PROC, GFP_KERNEL); + send_msg(msg); } void proc_sid_connector(struct task_struct *task) @@ -172,7 +178,6 @@ void proc_sid_connector(struct task_struct *task) msg = buffer_to_cn_msg(buffer); ev = (struct proc_event *)msg->data; memset(&ev->event_data, 0, sizeof(ev->event_data)); - get_seq(&msg->seq, &ev->cpu); ev->timestamp_ns = ktime_get_ns(); ev->what = PROC_EVENT_SID; ev->event_data.sid.process_pid = task->pid; @@ -182,7 +187,7 @@ void proc_sid_connector(struct task_struct *task) msg->ack = 0; /* not used */ msg->len = sizeof(*ev); msg->flags = 0; /* not used */ - cn_netlink_send(msg, 0, CN_IDX_PROC, GFP_KERNEL); + send_msg(msg); } void proc_ptrace_connector(struct task_struct *task, int ptrace_id) @@ -197,7 +202,6 @@ void proc_ptrace_connector(struct task_struct *task, int ptrace_id) msg = buffer_to_cn_msg(buffer); ev = (struct proc_event *)msg->data; memset(&ev->event_data, 0, sizeof(ev->event_data)); - get_seq(&msg->seq, &ev->cpu); ev->timestamp_ns = ktime_get_ns(); ev->what = PROC_EVENT_PTRACE; ev->event_data.ptrace.process_pid = task->pid; @@ -215,7 +219,7 @@ void proc_ptrace_connector(struct task_struct *task, int ptrace_id) msg->ack = 0; /* not used */ msg->len = sizeof(*ev); msg->flags = 0; /* not used */ - cn_netlink_send(msg, 0, CN_IDX_PROC, GFP_KERNEL); + send_msg(msg); } void proc_comm_connector(struct task_struct *task) @@ -230,7 +234,6 @@ void proc_comm_connector(struct task_struct *task) msg = buffer_to_cn_msg(buffer); ev = (struct proc_event *)msg->data; memset(&ev->event_data, 0, sizeof(ev->event_data)); - get_seq(&msg->seq, &ev->cpu); ev->timestamp_ns = ktime_get_ns(); ev->what = PROC_EVENT_COMM; ev->event_data.comm.process_pid = task->pid; @@ -241,7 +244,7 @@ void proc_comm_connector(struct task_struct *task) msg->ack = 0; /* not used */ msg->len = sizeof(*ev); msg->flags = 0; /* not used */ - cn_netlink_send(msg, 0, CN_IDX_PROC, GFP_KERNEL); + send_msg(msg); } void proc_coredump_connector(struct task_struct *task) @@ -256,7 +259,6 @@ void proc_coredump_connector(struct task_struct *task) msg = buffer_to_cn_msg(buffer); ev = (struct proc_event *)msg->data; memset(&ev->event_data, 0, sizeof(ev->event_data)); - get_seq(&msg->seq, &ev->cpu); ev->timestamp_ns = ktime_get_ns(); ev->what = PROC_EVENT_COREDUMP; ev->event_data.coredump.process_pid = task->pid; @@ -266,7 +268,7 @@ void proc_coredump_connector(struct task_struct *task) msg->ack = 0; /* not used */ msg->len = sizeof(*ev); msg->flags = 0; /* not used */ - cn_netlink_send(msg, 0, CN_IDX_PROC, GFP_KERNEL); + send_msg(msg); } void proc_exit_connector(struct task_struct *task) @@ -281,7 +283,6 @@ void proc_exit_connector(struct task_struct *task) msg = buffer_to_cn_msg(buffer); ev = (struct proc_event *)msg->data; memset(&ev->event_data, 0, sizeof(ev->event_data)); - get_seq(&msg->seq, &ev->cpu); ev->timestamp_ns = ktime_get_ns(); ev->what = PROC_EVENT_EXIT; ev->event_data.exit.process_pid = task->pid; @@ -293,7 +294,7 @@ void proc_exit_connector(struct task_struct *task) msg->ack = 0; /* not used */ msg->len = sizeof(*ev); msg->flags = 0; /* not used */ - cn_netlink_send(msg, 0, CN_IDX_PROC, GFP_KERNEL); + send_msg(msg); } /* @@ -325,7 +326,7 @@ static void cn_proc_ack(int err, int rcvd_seq, int rcvd_ack) msg->ack = rcvd_ack + 1; msg->len = sizeof(*ev); msg->flags = 0; /* not used */ - cn_netlink_send(msg, 0, CN_IDX_PROC, GFP_KERNEL); + send_msg(msg); } /** -- cgit v1.2.3 From 9a0fee2b552b1235fb1706ae1fc664ae74573be8 Mon Sep 17 00:00:00 2001 From: Willem de Bruijn Date: Fri, 24 Jun 2016 16:02:35 -0400 Subject: sock_diag: do not broadcast raw socket destruction Diag intends to broadcast tcp_sk and udp_sk socket destruction. Testing sk->sk_protocol for IPPROTO_TCP/IPPROTO_UDP alone is not sufficient for this. Raw sockets can have the same type. Add a test for sk->sk_type. Fixes: eb4cb008529c ("sock_diag: define destruction multicast groups") Signed-off-by: Willem de Bruijn Signed-off-by: David S. Miller --- include/linux/sock_diag.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/sock_diag.h b/include/linux/sock_diag.h index 4018b48f2b3b..a0596ca0e80a 100644 --- a/include/linux/sock_diag.h +++ b/include/linux/sock_diag.h @@ -36,6 +36,9 @@ enum sknetlink_groups sock_diag_destroy_group(const struct sock *sk) { switch (sk->sk_family) { case AF_INET: + if (sk->sk_type == SOCK_RAW) + return SKNLGRP_NONE; + switch (sk->sk_protocol) { case IPPROTO_TCP: return SKNLGRP_INET_TCP_DESTROY; @@ -45,6 +48,9 @@ enum sknetlink_groups sock_diag_destroy_group(const struct sock *sk) return SKNLGRP_NONE; } case AF_INET6: + if (sk->sk_type == SOCK_RAW) + return SKNLGRP_NONE; + switch (sk->sk_protocol) { case IPPROTO_TCP: return SKNLGRP_INET6_TCP_DESTROY; -- cgit v1.2.3 From 76a658c20efd541a62838d9ff68ce94170d7a549 Mon Sep 17 00:00:00 2001 From: Richard Guy Briggs Date: Tue, 28 Jun 2016 12:06:58 -0400 Subject: audit: move calcs after alloc and check when logging set loginuid Move the calculations of values after the allocation in case the allocation fails. This avoids wasting effort in the rare case that it fails, but more importantly saves us extra logic to release the tty ref. Signed-off-by: Richard Guy Briggs Signed-off-by: Paul Moore --- kernel/auditsc.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 71e14d836e69..33dafa70229d 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -1985,14 +1985,15 @@ static void audit_log_set_loginuid(kuid_t koldloginuid, kuid_t kloginuid, if (!audit_enabled) return; + ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_LOGIN); + if (!ab) + return; + uid = from_kuid(&init_user_ns, task_uid(current)); oldloginuid = from_kuid(&init_user_ns, koldloginuid); loginuid = from_kuid(&init_user_ns, kloginuid), tty = audit_get_tty(current); - ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_LOGIN); - if (!ab) - return; audit_log_format(ab, "pid=%d uid=%u", task_pid_nr(current), uid); audit_log_task_context(ab); audit_log_format(ab, " old-auid=%u auid=%u tty=%s old-ses=%u ses=%u res=%d", -- cgit v1.2.3 From 3f5be2da8565c1cce5655bb0948fcc957c6eb6c6 Mon Sep 17 00:00:00 2001 From: Richard Guy Briggs Date: Tue, 28 Jun 2016 12:07:50 -0400 Subject: audit: move audit_get_tty to reduce scope and kabi changes The only users of audit_get_tty and audit_put_tty are internal to audit, so move it out of include/linux/audit.h to kernel.h and create a proper function rather than inlining it. This also reduces kABI changes. Suggested-by: Paul Moore Signed-off-by: Richard Guy Briggs [PM: line wrapped description] Signed-off-by: Paul Moore --- include/linux/audit.h | 24 ------------------------ kernel/audit.c | 17 +++++++++++++++++ kernel/audit.h | 4 ++++ kernel/auditsc.c | 1 - 4 files changed, 21 insertions(+), 25 deletions(-) diff --git a/include/linux/audit.h b/include/linux/audit.h index 32cdafb312d8..b40ed5df5542 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -26,7 +26,6 @@ #include #include #include -#include #define AUDIT_INO_UNSET ((unsigned long)-1) #define AUDIT_DEV_UNSET ((dev_t)-1) @@ -344,23 +343,6 @@ static inline unsigned int audit_get_sessionid(struct task_struct *tsk) return tsk->sessionid; } -static inline struct tty_struct *audit_get_tty(struct task_struct *tsk) -{ - struct tty_struct *tty = NULL; - unsigned long flags; - - spin_lock_irqsave(&tsk->sighand->siglock, flags); - if (tsk->signal) - tty = tty_kref_get(tsk->signal->tty); - spin_unlock_irqrestore(&tsk->sighand->siglock, flags); - return tty; -} - -static inline void audit_put_tty(struct tty_struct *tty) -{ - tty_kref_put(tty); -} - extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp); extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode); extern void __audit_bprm(struct linux_binprm *bprm); @@ -518,12 +500,6 @@ static inline unsigned int audit_get_sessionid(struct task_struct *tsk) { return -1; } -static inline struct tty_struct *audit_get_tty(struct task_struct *tsk) -{ - return NULL; -} -static inline void audit_put_tty(struct tty_struct *tty) -{ } static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp) { } static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, diff --git a/kernel/audit.c b/kernel/audit.c index 384374a1d232..d5971010e44a 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -1866,6 +1866,23 @@ out_null: audit_log_format(ab, " exe=(null)"); } +struct tty_struct *audit_get_tty(struct task_struct *tsk) +{ + struct tty_struct *tty = NULL; + unsigned long flags; + + spin_lock_irqsave(&tsk->sighand->siglock, flags); + if (tsk->signal) + tty = tty_kref_get(tsk->signal->tty); + spin_unlock_irqrestore(&tsk->sighand->siglock, flags); + return tty; +} + +void audit_put_tty(struct tty_struct *tty) +{ + tty_kref_put(tty); +} + void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk) { const struct cred *cred; diff --git a/kernel/audit.h b/kernel/audit.h index cbbe6bb6496e..a492f4c4e710 100644 --- a/kernel/audit.h +++ b/kernel/audit.h @@ -23,6 +23,7 @@ #include #include #include +#include /* AUDIT_NAMES is the number of slots we reserve in the audit_context * for saving names from getname(). If we get more names we will allocate @@ -262,6 +263,9 @@ extern struct audit_entry *audit_dupe_rule(struct audit_krule *old); extern void audit_log_d_path_exe(struct audit_buffer *ab, struct mm_struct *mm); +extern struct tty_struct *audit_get_tty(struct task_struct *tsk); +extern void audit_put_tty(struct tty_struct *tty); + /* audit watch functions */ #ifdef CONFIG_AUDIT_WATCH extern void audit_put_watch(struct audit_watch *watch); diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 33dafa70229d..60a354eed2fa 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -63,7 +63,6 @@ #include #include #include -#include #include #include #include -- cgit v1.2.3 From e547f2628327fec6afd2e03b46f113f614cca05b Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 25 Jun 2016 19:19:28 -0400 Subject: NFS: Fix another OPEN_DOWNGRADE bug Olga Kornievskaia reports that the following test fails to trigger an OPEN_DOWNGRADE on the wire, and only triggers the final CLOSE. fd0 = open(foo, RDRW) -- should be open on the wire for "both" fd1 = open(foo, RDONLY) -- should be open on the wire for "read" close(fd0) -- should trigger an open_downgrade read(fd1) close(fd1) The issue is that we're missing a check for whether or not the current state transitioned from an O_RDWR state as opposed to having transitioned from a combination of O_RDONLY and O_WRONLY. Reported-by: Olga Kornievskaia Fixes: cd9288ffaea4 ("NFSv4: Fix another bug in the close/open_downgrade code") Cc: stable@vger.kernel.org # 2.6.33+ Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 406dd3eb68e2..ff416d0e24bc 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2882,12 +2882,11 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) call_close |= is_wronly; else if (is_wronly) calldata->arg.fmode |= FMODE_WRITE; + if (calldata->arg.fmode != (FMODE_READ|FMODE_WRITE)) + call_close |= is_rdwr; } else if (is_rdwr) calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; - if (calldata->arg.fmode == 0) - call_close |= is_rdwr; - if (!nfs4_valid_open_stateid(state)) call_close = 0; spin_unlock(&state->owner->so_lock); -- cgit v1.2.3 From 190ce8693c23eae09ba5f303a83bf2fbeb6478b1 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Tue, 28 Jun 2016 13:01:04 +1000 Subject: powerpc/tm: Avoid SLB faults in treclaim/trecheckpoint when RI=0 Currently we have 2 segments that are bolted for the kernel linear mapping (ie 0xc000... addresses). This is 0 to 1TB and also the kernel stacks. Anything accessed outside of these regions may need to be faulted in. (In practice machines with TM always have 1T segments) If a machine has < 2TB of memory we never fault on the kernel linear mapping as these two segments cover all physical memory. If a machine has > 2TB of memory, there may be structures outside of these two segments that need to be faulted in. This faulting can occur when running as a guest as the hypervisor may remove any SLB that's not bolted. When we treclaim and trecheckpoint we have a window where we need to run with the userspace GPRs. This means that we no longer have a valid stack pointer in r1. For this window we therefore clear MSR RI to indicate that any exceptions taken at this point won't be able to be handled. This means that we can't take segment misses in this RI=0 window. In this RI=0 region, we currently access the thread_struct for the process being context switched to or from. This thread_struct access may cause a segment fault since it's not guaranteed to be covered by the two bolted segment entries described above. We've seen this with a crash when running as a guest with > 2TB of memory on PowerVM: Unrecoverable exception 4100 at c00000000004f138 Oops: Unrecoverable exception, sig: 6 [#1] SMP NR_CPUS=2048 NUMA pSeries CPU: 1280 PID: 7755 Comm: kworker/1280:1 Tainted: G X 4.4.13-46-default #1 task: c000189001df4210 ti: c000189001d5c000 task.ti: c000189001d5c000 NIP: c00000000004f138 LR: 0000000010003a24 CTR: 0000000010001b20 REGS: c000189001d5f730 TRAP: 4100 Tainted: G X (4.4.13-46-default) MSR: 8000000100001031 CR: 24000048 XER: 00000000 CFAR: c00000000004ed18 SOFTE: 0 GPR00: ffffffffc58d7b60 c000189001d5f9b0 00000000100d7d00 000000003a738288 GPR04: 0000000000002781 0000000000000006 0000000000000000 c0000d1f4d889620 GPR08: 000000000000c350 00000000000008ab 00000000000008ab 00000000100d7af0 GPR12: 00000000100d7ae8 00003ffe787e67a0 0000000000000000 0000000000000211 GPR16: 0000000010001b20 0000000000000000 0000000000800000 00003ffe787df110 GPR20: 0000000000000001 00000000100d1e10 0000000000000000 00003ffe787df050 GPR24: 0000000000000003 0000000000010000 0000000000000000 00003fffe79e2e30 GPR28: 00003fffe79e2e68 00000000003d0f00 00003ffe787e67a0 00003ffe787de680 NIP [c00000000004f138] restore_gprs+0xd0/0x16c LR [0000000010003a24] 0x10003a24 Call Trace: [c000189001d5f9b0] [c000189001d5f9f0] 0xc000189001d5f9f0 (unreliable) [c000189001d5fb90] [c00000000001583c] tm_recheckpoint+0x6c/0xa0 [c000189001d5fbd0] [c000000000015c40] __switch_to+0x2c0/0x350 [c000189001d5fc30] [c0000000007e647c] __schedule+0x32c/0x9c0 [c000189001d5fcb0] [c0000000007e6b58] schedule+0x48/0xc0 [c000189001d5fce0] [c0000000000deabc] worker_thread+0x22c/0x5b0 [c000189001d5fd80] [c0000000000e7000] kthread+0x110/0x130 [c000189001d5fe30] [c000000000009538] ret_from_kernel_thread+0x5c/0xa4 Instruction dump: 7cb103a6 7cc0e3a6 7ca222a6 78a58402 38c00800 7cc62838 08860000 7cc000a6 38a00006 78c60022 7cc62838 0b060000 7ccff120 e8270078 e8a70098 ---[ end trace 602126d0a1dedd54 ]--- This fixes this by copying the required data from the thread_struct to the stack before we clear MSR RI. Then once we clear RI, we only access the stack, guaranteeing there's no segment miss. We also tighten the region over which we set RI=0 on the treclaim() path. This may have a slight performance impact since we're adding an mtmsr instruction. Fixes: 090b9284d725 ("powerpc/tm: Clear MSR RI in non-recoverable TM code") Signed-off-by: Michael Neuling Reviewed-by: Cyril Bur Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/tm.S | 61 ++++++++++++++++++++++++++++++++++-------------- 1 file changed, 44 insertions(+), 17 deletions(-) diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S index bf8f34a58670..b7019b559ddb 100644 --- a/arch/powerpc/kernel/tm.S +++ b/arch/powerpc/kernel/tm.S @@ -110,17 +110,11 @@ _GLOBAL(tm_reclaim) std r3, STK_PARAM(R3)(r1) SAVE_NVGPRS(r1) - /* We need to setup MSR for VSX register save instructions. Here we - * also clear the MSR RI since when we do the treclaim, we won't have a - * valid kernel pointer for a while. We clear RI here as it avoids - * adding another mtmsr closer to the treclaim. This makes the region - * maked as non-recoverable wider than it needs to be but it saves on - * inserting another mtmsrd later. - */ + /* We need to setup MSR for VSX register save instructions. */ mfmsr r14 mr r15, r14 ori r15, r15, MSR_FP - li r16, MSR_RI + li r16, 0 ori r16, r16, MSR_EE /* IRQs hard off */ andc r15, r15, r16 oris r15, r15, MSR_VEC@h @@ -176,7 +170,17 @@ dont_backup_fp: 1: tdeqi r6, 0 EMIT_BUG_ENTRY 1b,__FILE__,__LINE__,0 - /* The moment we treclaim, ALL of our GPRs will switch + /* Clear MSR RI since we are about to change r1, EE is already off. */ + li r4, 0 + mtmsrd r4, 1 + + /* + * BE CAREFUL HERE: + * At this point we can't take an SLB miss since we have MSR_RI + * off. Load only to/from the stack/paca which are in SLB bolted regions + * until we turn MSR RI back on. + * + * The moment we treclaim, ALL of our GPRs will switch * to user register state. (FPRs, CCR etc. also!) * Use an sprg and a tm_scratch in the PACA to shuffle. */ @@ -197,6 +201,11 @@ dont_backup_fp: /* Store the PPR in r11 and reset to decent value */ std r11, GPR11(r1) /* Temporary stash */ + + /* Reset MSR RI so we can take SLB faults again */ + li r11, MSR_RI + mtmsrd r11, 1 + mfspr r11, SPRN_PPR HMT_MEDIUM @@ -397,11 +406,6 @@ restore_gprs: ld r5, THREAD_TM_DSCR(r3) ld r6, THREAD_TM_PPR(r3) - /* Clear the MSR RI since we are about to change R1. EE is already off - */ - li r4, 0 - mtmsrd r4, 1 - REST_GPR(0, r7) /* GPR0 */ REST_2GPRS(2, r7) /* GPR2-3 */ REST_GPR(4, r7) /* GPR4 */ @@ -439,10 +443,33 @@ restore_gprs: ld r6, _CCR(r7) mtcr r6 - REST_GPR(1, r7) /* GPR1 */ - REST_GPR(5, r7) /* GPR5-7 */ REST_GPR(6, r7) - ld r7, GPR7(r7) + + /* + * Store r1 and r5 on the stack so that we can access them + * after we clear MSR RI. + */ + + REST_GPR(5, r7) + std r5, -8(r1) + ld r5, GPR1(r7) + std r5, -16(r1) + + REST_GPR(7, r7) + + /* Clear MSR RI since we are about to change r1. EE is already off */ + li r5, 0 + mtmsrd r5, 1 + + /* + * BE CAREFUL HERE: + * At this point we can't take an SLB miss since we have MSR_RI + * off. Load only to/from the stack/paca which are in SLB bolted regions + * until we turn MSR RI back on. + */ + + ld r5, -8(r1) + ld r1, -16(r1) /* Commit register state as checkpointed state: */ TRECHKPT -- cgit v1.2.3 From 69fc58a57e56bf5e39b48809aefffdaa1b04c945 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Fri, 24 Jun 2016 16:25:24 -0700 Subject: net: phy: Manage fixed PHY address space using IDA If we have a system which uses fixed PHY devices and calls fixed_phy_register() then fixed_phy_unregister() we can exhaust the number of fixed PHYs available after a while, since we keep incrementing the variable phy_fixed_addr, but we never decrement it. This patch fixes that by converting the fixed PHY allocation to using IDA, which takes care of the allocation/dealloaction of the PHY addresses for us. Fixes: a75951217472 ("net: phy: extend fixed driver with fixed_phy_register()") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/phy/fixed_phy.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/net/phy/fixed_phy.c b/drivers/net/phy/fixed_phy.c index 2d2e4339f0df..9ec7f7353434 100644 --- a/drivers/net/phy/fixed_phy.c +++ b/drivers/net/phy/fixed_phy.c @@ -23,6 +23,7 @@ #include #include #include +#include #define MII_REGS_NUM 29 @@ -286,6 +287,8 @@ err_regs: } EXPORT_SYMBOL_GPL(fixed_phy_add); +static DEFINE_IDA(phy_fixed_ida); + static void fixed_phy_del(int phy_addr) { struct fixed_mdio_bus *fmb = &platform_fmb; @@ -297,14 +300,12 @@ static void fixed_phy_del(int phy_addr) if (gpio_is_valid(fp->link_gpio)) gpio_free(fp->link_gpio); kfree(fp); + ida_simple_remove(&phy_fixed_ida, phy_addr); return; } } } -static int phy_fixed_addr; -static DEFINE_SPINLOCK(phy_fixed_addr_lock); - struct phy_device *fixed_phy_register(unsigned int irq, struct fixed_phy_status *status, int link_gpio, @@ -319,17 +320,15 @@ struct phy_device *fixed_phy_register(unsigned int irq, return ERR_PTR(-EPROBE_DEFER); /* Get the next available PHY address, up to PHY_MAX_ADDR */ - spin_lock(&phy_fixed_addr_lock); - if (phy_fixed_addr == PHY_MAX_ADDR) { - spin_unlock(&phy_fixed_addr_lock); - return ERR_PTR(-ENOSPC); - } - phy_addr = phy_fixed_addr++; - spin_unlock(&phy_fixed_addr_lock); + phy_addr = ida_simple_get(&phy_fixed_ida, 0, PHY_MAX_ADDR, GFP_KERNEL); + if (phy_addr < 0) + return ERR_PTR(phy_addr); ret = fixed_phy_add(irq, phy_addr, status, link_gpio); - if (ret < 0) + if (ret < 0) { + ida_simple_remove(&phy_fixed_ida, phy_addr); return ERR_PTR(ret); + } phy = get_phy_device(fmb->mii_bus, phy_addr, false); if (IS_ERR(phy)) { @@ -434,6 +433,7 @@ static void __exit fixed_mdio_bus_exit(void) list_del(&fp->node); kfree(fp); } + ida_destroy(&phy_fixed_ida); } module_exit(fixed_mdio_bus_exit); -- cgit v1.2.3 From 0b3dd7dfb81ad8af53791ea2bb64b83bac1b7d32 Mon Sep 17 00:00:00 2001 From: Simon Wunderlich Date: Sun, 26 Jun 2016 11:16:09 +0200 Subject: batman-adv: replace WARN with rate limited output on non-existing VLAN If a VLAN tagged frame is received and the corresponding VLAN is not configured on the soft interface, it will splat a WARN on every packet received. This is a quite annoying behaviour for some scenarios, e.g. if bat0 is bridged with eth0, and there are arbitrary VLAN tagged frames from Ethernet coming in without having any VLAN configuration on bat0. The code should probably create vlan objects on the fly and transparently transport these VLAN-tagged Ethernet frames, but until this is done, at least the WARN splat should be replaced by a rate limited output. Fixes: 354136bcc3c4 ("batman-adv: fix kernel crash due to missing NULL checks") Signed-off-by: Simon Wunderlich Signed-off-by: Marek Lindner Signed-off-by: Sven Eckelmann Signed-off-by: David S. Miller --- net/batman-adv/translation-table.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index feaf492b01ca..72abab7b01eb 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -650,8 +650,10 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const u8 *addr, /* increase the refcounter of the related vlan */ vlan = batadv_softif_vlan_get(bat_priv, vid); - if (WARN(!vlan, "adding TT local entry %pM to non-existent VLAN %d", - addr, BATADV_PRINT_VID(vid))) { + if (!vlan) { + net_ratelimited_function(batadv_info, soft_iface, + "adding TT local entry %pM to non-existent VLAN %d\n", + addr, BATADV_PRINT_VID(vid)); kfree(tt_local); tt_local = NULL; goto out; -- cgit v1.2.3 From 9c4604a298e0a9807eaf2cd912d1ebf24d98fbeb Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Sun, 26 Jun 2016 11:16:10 +0200 Subject: batman-adv: Fix use-after-free/double-free of tt_req_node The tt_req_node is added and removed from a list inside a spinlock. But the locking is sometimes removed even when the object is still referenced and will be used later via this reference. For example batadv_send_tt_request can create a new tt_req_node (including add to a list) and later re-acquires the lock to remove it from the list and to free it. But at this time another context could have already removed this tt_req_node from the list and freed it. CPU#0 batadv_batman_skb_recv from net_device 0 -> batadv_iv_ogm_receive -> batadv_iv_ogm_process -> batadv_iv_ogm_process_per_outif -> batadv_tvlv_ogm_receive -> batadv_tvlv_ogm_receive -> batadv_tvlv_containers_process -> batadv_tvlv_call_handler -> batadv_tt_tvlv_ogm_handler_v1 -> batadv_tt_update_orig -> batadv_send_tt_request -> batadv_tt_req_node_new spin_lock(...) allocates new tt_req_node and adds it to list spin_unlock(...) return tt_req_node CPU#1 batadv_batman_skb_recv from net_device 1 -> batadv_recv_unicast_tvlv -> batadv_tvlv_containers_process -> batadv_tvlv_call_handler -> batadv_tt_tvlv_unicast_handler_v1 -> batadv_handle_tt_response spin_lock(...) tt_req_node gets removed from list and is freed spin_unlock(...) CPU#0 <- returned to batadv_send_tt_request spin_lock(...) tt_req_node gets removed from list and is freed MEMORY CORRUPTION/SEGFAULT/... spin_unlock(...) This can only be solved via reference counting to allow multiple contexts to handle the list manipulation while making sure that only the last context holding a reference will free the object. Fixes: a73105b8d4c7 ("batman-adv: improved client announcement mechanism") Signed-off-by: Sven Eckelmann Tested-by: Martin Weinelt Tested-by: Amadeus Alfa Signed-off-by: Marek Lindner Signed-off-by: David S. Miller --- net/batman-adv/translation-table.c | 43 ++++++++++++++++++++++++++++++++------ net/batman-adv/types.h | 2 ++ 2 files changed, 39 insertions(+), 6 deletions(-) diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 72abab7b01eb..cfb5ccdfd62b 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -2271,6 +2271,29 @@ static u32 batadv_tt_local_crc(struct batadv_priv *bat_priv, return crc; } +/** + * batadv_tt_req_node_release - free tt_req node entry + * @ref: kref pointer of the tt req_node entry + */ +static void batadv_tt_req_node_release(struct kref *ref) +{ + struct batadv_tt_req_node *tt_req_node; + + tt_req_node = container_of(ref, struct batadv_tt_req_node, refcount); + + kfree(tt_req_node); +} + +/** + * batadv_tt_req_node_put - decrement the tt_req_node refcounter and + * possibly release it + * @tt_req_node: tt_req_node to be free'd + */ +static void batadv_tt_req_node_put(struct batadv_tt_req_node *tt_req_node) +{ + kref_put(&tt_req_node->refcount, batadv_tt_req_node_release); +} + static void batadv_tt_req_list_free(struct batadv_priv *bat_priv) { struct batadv_tt_req_node *node; @@ -2280,7 +2303,7 @@ static void batadv_tt_req_list_free(struct batadv_priv *bat_priv) hlist_for_each_entry_safe(node, safe, &bat_priv->tt.req_list, list) { hlist_del_init(&node->list); - kfree(node); + batadv_tt_req_node_put(node); } spin_unlock_bh(&bat_priv->tt.req_list_lock); @@ -2317,7 +2340,7 @@ static void batadv_tt_req_purge(struct batadv_priv *bat_priv) if (batadv_has_timed_out(node->issued_at, BATADV_TT_REQUEST_TIMEOUT)) { hlist_del_init(&node->list); - kfree(node); + batadv_tt_req_node_put(node); } } spin_unlock_bh(&bat_priv->tt.req_list_lock); @@ -2349,9 +2372,11 @@ batadv_tt_req_node_new(struct batadv_priv *bat_priv, if (!tt_req_node) goto unlock; + kref_init(&tt_req_node->refcount); ether_addr_copy(tt_req_node->addr, orig_node->orig); tt_req_node->issued_at = jiffies; + kref_get(&tt_req_node->refcount); hlist_add_head(&tt_req_node->list, &bat_priv->tt.req_list); unlock: spin_unlock_bh(&bat_priv->tt.req_list_lock); @@ -2615,13 +2640,19 @@ static bool batadv_send_tt_request(struct batadv_priv *bat_priv, out: if (primary_if) batadv_hardif_put(primary_if); + if (ret && tt_req_node) { spin_lock_bh(&bat_priv->tt.req_list_lock); - /* hlist_del_init() verifies tt_req_node still is in the list */ - hlist_del_init(&tt_req_node->list); + if (!hlist_unhashed(&tt_req_node->list)) { + hlist_del_init(&tt_req_node->list); + batadv_tt_req_node_put(tt_req_node); + } spin_unlock_bh(&bat_priv->tt.req_list_lock); - kfree(tt_req_node); } + + if (tt_req_node) + batadv_tt_req_node_put(tt_req_node); + kfree(tvlv_tt_data); return ret; } @@ -3057,7 +3088,7 @@ static void batadv_handle_tt_response(struct batadv_priv *bat_priv, if (!batadv_compare_eth(node->addr, resp_src)) continue; hlist_del_init(&node->list); - kfree(node); + batadv_tt_req_node_put(node); } spin_unlock_bh(&bat_priv->tt.req_list_lock); diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 6a577f4f8ba7..ba846b078af8 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -1137,11 +1137,13 @@ struct batadv_tt_change_node { * struct batadv_tt_req_node - data to keep track of the tt requests in flight * @addr: mac address address of the originator this request was sent to * @issued_at: timestamp used for purging stale tt requests + * @refcount: number of contexts the object is used by * @list: list node for batadv_priv_tt::req_list */ struct batadv_tt_req_node { u8 addr[ETH_ALEN]; unsigned long issued_at; + struct kref refcount; struct hlist_node list; }; -- cgit v1.2.3 From baceced93274ff2f846eae991664f9094425ffa8 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Sun, 26 Jun 2016 11:16:11 +0200 Subject: batman-adv: Fix double-put of vlan object Each batadv_tt_local_entry hold a single reference to a batadv_softif_vlan. In case a new entry cannot be added to the hash table, the error path puts the reference, but the reference will also now be dropped by batadv_tt_local_entry_release(). Fixes: a33d970d0b54 ("batman-adv: Fix reference counting of vlan object for tt_local_entry") Signed-off-by: Ben Hutchings Signed-off-by: Marek Lindner Signed-off-by: Sven Eckelmann Signed-off-by: David S. Miller --- net/batman-adv/translation-table.c | 1 - 1 file changed, 1 deletion(-) diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index cfb5ccdfd62b..57ec87f37050 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -693,7 +693,6 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const u8 *addr, if (unlikely(hash_added != 0)) { /* remove the reference for the hash */ batadv_tt_local_entry_put(tt_local); - batadv_softif_vlan_put(vlan); goto out; } -- cgit v1.2.3 From 3b55e4422087f9f7b241031d758a0c65584e4297 Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Sun, 26 Jun 2016 11:16:12 +0200 Subject: batman-adv: Fix ICMP RR ethernet access after skb_linearize The skb_linearize may reallocate the skb. This makes the calculated pointer for ethhdr invalid. But it the pointer is used later to fill in the RR field of the batadv_icmp_packet_rr packet. Instead re-evaluate eth_hdr after the skb_linearize+skb_cow to fix the pointer and avoid the invalid read. Fixes: da6b8c20a5b8 ("batman-adv: generalize batman-adv icmp packet handling") Signed-off-by: Sven Eckelmann Signed-off-by: Marek Lindner Signed-off-by: David S. Miller --- net/batman-adv/routing.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index e3857ed4057f..6c2901a86230 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -374,6 +374,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb, if (skb_cow(skb, ETH_HLEN) < 0) goto out; + ethhdr = eth_hdr(skb); icmph = (struct batadv_icmp_header *)skb->data; icmp_packet_rr = (struct batadv_icmp_packet_rr *)icmph; if (icmp_packet_rr->rr_cur >= BATADV_RR_LEN) -- cgit v1.2.3 From 420cb1b764f9169c5d2601b4af90e4a1702345ee Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Sun, 26 Jun 2016 11:16:13 +0200 Subject: batman-adv: Clean up untagged vlan when destroying via rtnl-link The untagged vlan object is only destroyed when the interface is removed via the legacy sysfs interface. But it also has to be destroyed when the standard rtnl-link interface is used. Fixes: 5d2c05b21337 ("batman-adv: add per VLAN interface attribute framework") Signed-off-by: Sven Eckelmann Acked-by: Antonio Quartulli Signed-off-by: Marek Lindner Signed-off-by: David S. Miller --- net/batman-adv/soft-interface.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 343d2c904399..287a3879ed7e 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -1033,7 +1033,9 @@ void batadv_softif_destroy_sysfs(struct net_device *soft_iface) static void batadv_softif_destroy_netlink(struct net_device *soft_iface, struct list_head *head) { + struct batadv_priv *bat_priv = netdev_priv(soft_iface); struct batadv_hard_iface *hard_iface; + struct batadv_softif_vlan *vlan; list_for_each_entry(hard_iface, &batadv_hardif_list, list) { if (hard_iface->soft_iface == soft_iface) @@ -1041,6 +1043,13 @@ static void batadv_softif_destroy_netlink(struct net_device *soft_iface, BATADV_IF_CLEANUP_KEEP); } + /* destroy the "untagged" VLAN */ + vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); + if (vlan) { + batadv_softif_destroy_vlan(bat_priv, vlan); + batadv_softif_vlan_put(vlan); + } + batadv_sysfs_del_meshif(soft_iface); unregister_netdevice_queue(soft_iface, head); } -- cgit v1.2.3 From 3ec0a0f10ceb77c78f540ded1d13bf0cf7f89a07 Mon Sep 17 00:00:00 2001 From: Harini Katakam Date: Mon, 27 Jun 2016 13:09:59 +0530 Subject: net: marvell: Add separate config ANEG function for Marvell 88E1111 Marvell 88E1111 currently uses the generic marvell config ANEG function. This function has a sequence accessing Page 5 and Register 31, both of which are not defined or reserved for this PHY. Hence this patch adds a new config ANEG function for Marvell 88E1111 without these erroneous accesses. Signed-off-by: Harini Katakam Signed-off-by: David S. Miller --- drivers/net/phy/marvell.c | 44 +++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 43 insertions(+), 1 deletion(-) diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c index 79ccc11facc3..ec2c1eee6405 100644 --- a/drivers/net/phy/marvell.c +++ b/drivers/net/phy/marvell.c @@ -285,6 +285,48 @@ static int marvell_config_aneg(struct phy_device *phydev) return 0; } +static int m88e1111_config_aneg(struct phy_device *phydev) +{ + int err; + + /* The Marvell PHY has an errata which requires + * that certain registers get written in order + * to restart autonegotiation + */ + err = phy_write(phydev, MII_BMCR, BMCR_RESET); + + err = marvell_set_polarity(phydev, phydev->mdix); + if (err < 0) + return err; + + err = phy_write(phydev, MII_M1111_PHY_LED_CONTROL, + MII_M1111_PHY_LED_DIRECT); + if (err < 0) + return err; + + err = genphy_config_aneg(phydev); + if (err < 0) + return err; + + if (phydev->autoneg != AUTONEG_ENABLE) { + int bmcr; + + /* A write to speed/duplex bits (that is performed by + * genphy_config_aneg() call above) must be followed by + * a software reset. Otherwise, the write has no effect. + */ + bmcr = phy_read(phydev, MII_BMCR); + if (bmcr < 0) + return bmcr; + + err = phy_write(phydev, MII_BMCR, bmcr | BMCR_RESET); + if (err < 0) + return err; + } + + return 0; +} + #ifdef CONFIG_OF_MDIO /* * Set and/or override some configuration registers based on the @@ -1175,7 +1217,7 @@ static struct phy_driver marvell_drivers[] = { .flags = PHY_HAS_INTERRUPT, .probe = marvell_probe, .config_init = &m88e1111_config_init, - .config_aneg = &marvell_config_aneg, + .config_aneg = &m88e1111_config_aneg, .read_status = &marvell_read_status, .ack_interrupt = &marvell_ack_interrupt, .config_intr = &marvell_config_intr, -- cgit v1.2.3 From 664a84d2c77cbff2945ed7f96d08afbba42b6293 Mon Sep 17 00:00:00 2001 From: Ville Syrjälä Date: Fri, 13 May 2016 20:53:56 +0300 Subject: drm/i915: Refresh cached DP port register value on resume MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During hibernation the cached DP port register value will be left with whatever value we have there when we create the hibernation image. Currently that means the port (and eDP PLL) will be off in the cached value. However when we resume there is no guarantee that the value in the actual register will match the cached value. If i915 isn't loaded in the kernel that loads the hibernation image, the port may well be on (eg. left on by the BIOS). The encoder state readout does the right thing in this case and updates our encoder state to reflect the actual hardware state. However the post-resume modeset will then use the stale cached port register value in intel_dp_link_down() and potentially confuse the hardware. This was caught by the following assert WARNING: CPU: 3 PID: 5288 at ../drivers/gpu/drm/i915/intel_dp.c:2184 assert_edp_pll+0x99/0xa0 [i915] eDP PLL state assertion failure (expected on, current off) on account of the eDP PLL getting prematurely turned off when shutting down the port, since the DP_PLL_ENABLE bit wasn't set in the cached register value. Presumably I introduced this problem in commit 6fec76628333 ("drm/i915: Use intel_dp->DP in eDP PLL setup") as before that we didn't update the cached value after shuttting the port down. That's assuming the port got enabled at least once prior to hibernating. If that didn't happen then the cached value would still have been totally out of sync with reality (eg. first boot w/o eDP on, then hibernate, and then resume with eDP on). So, let's fix this properly and refresh the cached register value from the hardware register during resume. DDI platforms shouldn't use the cached value during port disable at least, so shouldn't have this particular issue. They might still have issues if we skip the initial modeset and then try to retrain the link or something. But untangling this DP vs. DDI mess is a bigger topic, so let's jut punt on DDI for now. Cc: Jani Nikula Cc: stable@vger.kernel.org Fixes: 6fec76628333 ("drm/i915: Use intel_dp->DP in eDP PLL setup") Signed-off-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/1463162036-27931-1-git-send-email-ville.syrjala@linux.intel.com Reviewed-by: Imre Deak (cherry picked from commit 64989ca4b27acb026b6496ec21e43bee66f86a5b) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_dp.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 79cf2d5f5a20..49c582d9eb5a 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -4899,13 +4899,15 @@ static void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp) void intel_dp_encoder_reset(struct drm_encoder *encoder) { - struct intel_dp *intel_dp; + struct drm_i915_private *dev_priv = to_i915(encoder->dev); + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + + if (!HAS_DDI(dev_priv)) + intel_dp->DP = I915_READ(intel_dp->output_reg); if (to_intel_encoder(encoder)->type != INTEL_OUTPUT_EDP) return; - intel_dp = enc_to_intel_dp(encoder); - pps_lock(intel_dp); /* -- cgit v1.2.3 From ea12e2a0cad62f6d634da62e7bf50ffe077de13b Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Tue, 28 Jun 2016 13:37:30 +0300 Subject: drm/i915/bxt: Avoid early timeout during PLL enable Since wait_for_atomic doesn't re-check the wait-for condition after expiry of the timeout it can fail when called from non-atomic context even if the condition is set correctly before the expiry. Fix this by using the non-atomic wait_for instead. I noticed this via the PLL locking timing out incorrectly, with this fix I couldn't reproduce the problem. Fixes: 0351b93992aa ("drm/i915: Do not lie about atomic timeout granularity") CC: Chris Wilson CC: Tvrtko Ursulin Signed-off-by: Imre Deak Reviewed-by: Tvrtko Ursulin CC: drm-intel-fixes@lists.freedesktop.org Link: http://patchwork.freedesktop.org/patch/msgid/1467110253-16046-2-git-send-email-imre.deak@intel.com (cherry picked from commit 0b786e41c73956126f6297764459021deef8aba7) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_dpll_mgr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.c b/drivers/gpu/drm/i915/intel_dpll_mgr.c index baf6f5584cbd..58f60b27837e 100644 --- a/drivers/gpu/drm/i915/intel_dpll_mgr.c +++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c @@ -1377,8 +1377,8 @@ static void bxt_ddi_pll_enable(struct drm_i915_private *dev_priv, I915_WRITE(BXT_PORT_PLL_ENABLE(port), temp); POSTING_READ(BXT_PORT_PLL_ENABLE(port)); - if (wait_for_atomic_us((I915_READ(BXT_PORT_PLL_ENABLE(port)) & - PORT_PLL_LOCK), 200)) + if (wait_for_us((I915_READ(BXT_PORT_PLL_ENABLE(port)) & PORT_PLL_LOCK), + 200)) DRM_ERROR("PLL %d not locked\n", port); /* -- cgit v1.2.3 From 11f6145791775ce41b8993fd29e19eb53ef0ff14 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Tue, 28 Jun 2016 13:37:31 +0300 Subject: drm/i915/lpt: Avoid early timeout during FDI PHY reset Since wait_for_atomic doesn't re-check the wait-for condition after expiry of the timeout it can fail when called from non-atomic context even if the condition is set correctly before the expiry. Fix this by using the non-atomic wait_for instead. Fixes: 0351b93992aa ("drm/i915: Do not lie about atomic timeout granularity") CC: Chris Wilson CC: Tvrtko Ursulin Signed-off-by: Imre Deak Reviewed-by: Tvrtko Ursulin CC: drm-intel-fixes@lists.freedesktop.org Link: http://patchwork.freedesktop.org/patch/msgid/1467110253-16046-3-git-send-email-imre.deak@intel.com (cherry picked from commit cf3598c23cd09d5f063fa8c12fe9ddd5a352d3d5) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_display.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 56a1637c864f..a164ea44f668 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -8447,16 +8447,16 @@ static void lpt_reset_fdi_mphy(struct drm_i915_private *dev_priv) tmp |= FDI_MPHY_IOSFSB_RESET_CTL; I915_WRITE(SOUTH_CHICKEN2, tmp); - if (wait_for_atomic_us(I915_READ(SOUTH_CHICKEN2) & - FDI_MPHY_IOSFSB_RESET_STATUS, 100)) + if (wait_for_us(I915_READ(SOUTH_CHICKEN2) & + FDI_MPHY_IOSFSB_RESET_STATUS, 100)) DRM_ERROR("FDI mPHY reset assert timeout\n"); tmp = I915_READ(SOUTH_CHICKEN2); tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL; I915_WRITE(SOUTH_CHICKEN2, tmp); - if (wait_for_atomic_us((I915_READ(SOUTH_CHICKEN2) & - FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100)) + if (wait_for_us((I915_READ(SOUTH_CHICKEN2) & + FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100)) DRM_ERROR("FDI mPHY reset de-assert timeout\n"); } -- cgit v1.2.3 From fa7c13e5b1e2076b0ec716ed584ab76f9e65b7a6 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Tue, 28 Jun 2016 13:37:32 +0300 Subject: drm/i915/hsw: Avoid early timeout during LCPLL disable/restore Since wait_for_atomic doesn't re-check the wait-for condition after expiry of the timeout it can fail when called from non-atomic context even if the condition is set correctly before the expiry. Fix this by using the non-atomic wait_for instead. Fixes: 0351b93992aa ("drm/i915: Do not lie about atomic timeout granularity") CC: Chris Wilson CC: Tvrtko Ursulin Signed-off-by: Imre Deak Reviewed-by: Tvrtko Ursulin CC: drm-intel-fixes@lists.freedesktop.org Link: http://patchwork.freedesktop.org/patch/msgid/1467110253-16046-4-git-send-email-imre.deak@intel.com (cherry picked from commit f53dd63f1119a98a16d1a5a7cb3277a2f1ff483d) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_display.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index a164ea44f668..04452cf3eae8 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -9440,8 +9440,8 @@ static void hsw_disable_lcpll(struct drm_i915_private *dev_priv, val |= LCPLL_CD_SOURCE_FCLK; I915_WRITE(LCPLL_CTL, val); - if (wait_for_atomic_us(I915_READ(LCPLL_CTL) & - LCPLL_CD_SOURCE_FCLK_DONE, 1)) + if (wait_for_us(I915_READ(LCPLL_CTL) & + LCPLL_CD_SOURCE_FCLK_DONE, 1)) DRM_ERROR("Switching to FCLK failed\n"); val = I915_READ(LCPLL_CTL); @@ -9514,8 +9514,8 @@ static void hsw_restore_lcpll(struct drm_i915_private *dev_priv) val &= ~LCPLL_CD_SOURCE_FCLK; I915_WRITE(LCPLL_CTL, val); - if (wait_for_atomic_us((I915_READ(LCPLL_CTL) & - LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1)) + if (wait_for_us((I915_READ(LCPLL_CTL) & + LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1)) DRM_ERROR("Switching back to LCPLL failed\n"); } -- cgit v1.2.3 From ba34a65324259082dc6d2924cb82d562db1c6a6b Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Tue, 28 Jun 2016 13:37:33 +0300 Subject: drm/i915: Avoid early timeout during AUX transfers Since wait_for_atomic doesn't re-check the wait-for condition after expiry of the timeout it can fail when called from non-atomic context even if the condition is set correctly before the expiry. Fix this by using the non-atomic wait_for instead. Due to the relatively long 10ms timeout, probably this didn't cause any real problems, but fix it in any case for consistency. Fixes: 0351b93992aa ("drm/i915: Do not lie about atomic timeout granularity") CC: Chris Wilson CC: Tvrtko Ursulin Signed-off-by: Imre Deak Reviewed-by: Tvrtko Ursulin CC: drm-intel-fixes@lists.freedesktop.org Link: http://patchwork.freedesktop.org/patch/msgid/1467110253-16046-5-git-send-email-imre.deak@intel.com (cherry picked from commit 713a6b668932213247b394559bc229cd0fec2777) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_dp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 49c582d9eb5a..40745e38d438 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -663,7 +663,7 @@ intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, msecs_to_jiffies_timeout(10)); else - done = wait_for_atomic(C, 10) == 0; + done = wait_for(C, 10) == 0; if (!done) DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", has_aux_irq); -- cgit v1.2.3 From 5be1ea899da4f11de92897d2ea706e0820609b9e Mon Sep 17 00:00:00 2001 From: Eli Cohen Date: Mon, 27 Jun 2016 12:08:32 +0300 Subject: net/mlx5: Update command strings Add command string for MODIFY_FLOW_TABLE which is used by the driver. Signed-off-by: Eli Cohen Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c index dcd2df6518de..0b4986268cc9 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c @@ -545,6 +545,7 @@ const char *mlx5_command_str(int command) MLX5_COMMAND_STR_CASE(ALLOC_FLOW_COUNTER); MLX5_COMMAND_STR_CASE(DEALLOC_FLOW_COUNTER); MLX5_COMMAND_STR_CASE(QUERY_FLOW_COUNTER); + MLX5_COMMAND_STR_CASE(MODIFY_FLOW_TABLE); default: return "unknown command opcode"; } } -- cgit v1.2.3 From 7092fe866907f4f243122ab388cbf0e77305afaa Mon Sep 17 00:00:00 2001 From: Majd Dibbiny Date: Mon, 27 Jun 2016 12:08:33 +0300 Subject: net/mlx5: Add ConnectX-5 PCIe 4.0 to list of supported devices Add the upcoming ConnectX-5 PCIe 4.0 device to the list of supported devices by the mlx5 driver. Signed-off-by: Majd Dibbiny Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx5/core/main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index a19b59348dd6..c65f4a13e17e 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -1508,8 +1508,9 @@ static const struct pci_device_id mlx5_core_pci_table[] = { { PCI_VDEVICE(MELLANOX, 0x1014), MLX5_PCI_DEV_IS_VF}, /* ConnectX-4 VF */ { PCI_VDEVICE(MELLANOX, 0x1015) }, /* ConnectX-4LX */ { PCI_VDEVICE(MELLANOX, 0x1016), MLX5_PCI_DEV_IS_VF}, /* ConnectX-4LX VF */ - { PCI_VDEVICE(MELLANOX, 0x1017) }, /* ConnectX-5 */ + { PCI_VDEVICE(MELLANOX, 0x1017) }, /* ConnectX-5, PCIe 3.0 */ { PCI_VDEVICE(MELLANOX, 0x1018), MLX5_PCI_DEV_IS_VF}, /* ConnectX-5 VF */ + { PCI_VDEVICE(MELLANOX, 0x1019) }, /* ConnectX-5, PCIe 4.0 */ { 0, } }; -- cgit v1.2.3 From e0f46eb9f64ca2e97d242b6e02b8ae2c7fe6dc56 Mon Sep 17 00:00:00 2001 From: Eli Cohen Date: Mon, 27 Jun 2016 12:08:34 +0300 Subject: net/mlx5e: Change enum to better reflect usage Change MLX5E_STATE_ASYNC_EVENTS_ENABLE to MLX5E_STATE_ASYNC_EVENTS_ENABLED since it represent a state and not an operation. Fixes: acff797cd1874 ('net/mlx5: Extend mlx5_core to support ConnectX-4 Ethernet functionality') Signed-off-by: Eli Cohen Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx5/core/en.h | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index e8a6c3325b39..baa991a23475 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -401,7 +401,7 @@ enum mlx5e_traffic_types { }; enum { - MLX5E_STATE_ASYNC_EVENTS_ENABLE, + MLX5E_STATE_ASYNC_EVENTS_ENABLED, MLX5E_STATE_OPENED, MLX5E_STATE_DESTROYING, }; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index f5c8d5db25a8..4383f8c737e5 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -244,7 +244,7 @@ static void mlx5e_async_event(struct mlx5_core_dev *mdev, void *vpriv, { struct mlx5e_priv *priv = vpriv; - if (!test_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLE, &priv->state)) + if (!test_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLED, &priv->state)) return; switch (event) { @@ -260,12 +260,12 @@ static void mlx5e_async_event(struct mlx5_core_dev *mdev, void *vpriv, static void mlx5e_enable_async_events(struct mlx5e_priv *priv) { - set_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLE, &priv->state); + set_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLED, &priv->state); } static void mlx5e_disable_async_events(struct mlx5e_priv *priv) { - clear_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLE, &priv->state); + clear_bit(MLX5E_STATE_ASYNC_EVENTS_ENABLED, &priv->state); synchronize_irq(mlx5_get_msix_vec(priv->mdev, MLX5_EQ_VEC_ASYNC)); } -- cgit v1.2.3 From fd4782c21359cfd52af4c3180a2bb6bad55c1eba Mon Sep 17 00:00:00 2001 From: Gal Pressman Date: Mon, 27 Jun 2016 12:08:35 +0300 Subject: net/mlx5e: Check for BlueFlame capability before allocating SQ uar Previous to this patch mapping was always set to write combining without checking whether BlueFlame is supported in the device. Fixes: 0ba422410bbf ('net/mlx5: Fix global UAR mapping') Signed-off-by: Gal Pressman Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 4383f8c737e5..793d7a1f92b5 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -580,7 +580,7 @@ static int mlx5e_create_sq(struct mlx5e_channel *c, void *sqc_wq = MLX5_ADDR_OF(sqc, sqc, wq); int err; - err = mlx5_alloc_map_uar(mdev, &sq->uar, true); + err = mlx5_alloc_map_uar(mdev, &sq->uar, !!MLX5_CAP_GEN(mdev, bf)); if (err) return err; -- cgit v1.2.3 From 9ceec359e4ebdbbfd35375203c5bd06d602225f7 Mon Sep 17 00:00:00 2001 From: Matthew Finlay Date: Mon, 27 Jun 2016 12:08:36 +0300 Subject: net/mlx5e: Prevent adding the same vxlan port Do not allow the same vxlan udp port to be added to the device more than once. Fixes: b3f63c3d5e2c ("net/mlx5e: Add netdev support for VXLAN tunneling") Signed-off-by: Matthew Finlay Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx5/core/vxlan.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/vxlan.c b/drivers/net/ethernet/mellanox/mlx5/core/vxlan.c index f2fd1ef16da7..05de77267d58 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/vxlan.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/vxlan.c @@ -105,6 +105,9 @@ static void mlx5e_vxlan_add_port(struct work_struct *work) struct mlx5e_vxlan *vxlan; int err; + if (mlx5e_vxlan_lookup_port(priv, port)) + goto free_work; + if (mlx5e_vxlan_core_add_port_cmd(priv->mdev, port)) goto free_work; -- cgit v1.2.3 From ed80ec4c179d1f44cc1b36c7a102353ae6103793 Mon Sep 17 00:00:00 2001 From: Gal Pressman Date: Mon, 27 Jun 2016 12:08:37 +0300 Subject: net/mlx5e: Fix number of PFC counters reported to ethtool Number of PFC counters used to count only number of priorities with PFC enabled, but each priority has more than one counter, hence the need to multiply it by the number of PFC counters per priority. Fixes: cf678570d5a1 ('net/mlx5e: Add per priority group to PPort counters') Signed-off-by: Gal Pressman Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c index fc7dcc03b1de..c709d41c4b70 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -184,7 +184,9 @@ static unsigned long mlx5e_query_pfc_combined(struct mlx5e_priv *priv) #define MLX5E_NUM_SQ_STATS(priv) \ (NUM_SQ_STATS * priv->params.num_channels * priv->params.num_tc * \ test_bit(MLX5E_STATE_OPENED, &priv->state)) -#define MLX5E_NUM_PFC_COUNTERS(priv) hweight8(mlx5e_query_pfc_combined(priv)) +#define MLX5E_NUM_PFC_COUNTERS(priv) \ + (hweight8(mlx5e_query_pfc_combined(priv)) * \ + NUM_PPORT_PER_PRIO_PFC_COUNTERS) static int mlx5e_get_sset_count(struct net_device *dev, int sset) { -- cgit v1.2.3 From bfe6d8d1d433cbd5513a93132695e6dbdd79e6f2 Mon Sep 17 00:00:00 2001 From: Gal Pressman Date: Mon, 27 Jun 2016 12:08:38 +0300 Subject: net/mlx5e: Reorganize ethtool statistics Categorize and reorganize ethtool statistics counters by renaming to "rx_*" and "tx_*" and removing redundant and duplicated counters, this way they are easier to grasp and more user friendly. Signed-off-by: Gal Pressman Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller --- .../net/ethernet/mellanox/mlx5/core/en_ethtool.c | 30 ++- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 27 ++- drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 4 +- drivers/net/ethernet/mellanox/mlx5/core/en_stats.h | 228 +++++++++------------ drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | 4 +- 5 files changed, 130 insertions(+), 163 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c index c709d41c4b70..e667a870e0c2 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -213,42 +213,41 @@ static void mlx5e_fill_stats_strings(struct mlx5e_priv *priv, uint8_t *data) /* SW counters */ for (i = 0; i < NUM_SW_COUNTERS; i++) - strcpy(data + (idx++) * ETH_GSTRING_LEN, sw_stats_desc[i].name); + strcpy(data + (idx++) * ETH_GSTRING_LEN, sw_stats_desc[i].format); /* Q counters */ for (i = 0; i < MLX5E_NUM_Q_CNTRS(priv); i++) - strcpy(data + (idx++) * ETH_GSTRING_LEN, q_stats_desc[i].name); + strcpy(data + (idx++) * ETH_GSTRING_LEN, q_stats_desc[i].format); /* VPORT counters */ for (i = 0; i < NUM_VPORT_COUNTERS; i++) strcpy(data + (idx++) * ETH_GSTRING_LEN, - vport_stats_desc[i].name); + vport_stats_desc[i].format); /* PPORT counters */ for (i = 0; i < NUM_PPORT_802_3_COUNTERS; i++) strcpy(data + (idx++) * ETH_GSTRING_LEN, - pport_802_3_stats_desc[i].name); + pport_802_3_stats_desc[i].format); for (i = 0; i < NUM_PPORT_2863_COUNTERS; i++) strcpy(data + (idx++) * ETH_GSTRING_LEN, - pport_2863_stats_desc[i].name); + pport_2863_stats_desc[i].format); for (i = 0; i < NUM_PPORT_2819_COUNTERS; i++) strcpy(data + (idx++) * ETH_GSTRING_LEN, - pport_2819_stats_desc[i].name); + pport_2819_stats_desc[i].format); for (prio = 0; prio < NUM_PPORT_PRIO; prio++) { for (i = 0; i < NUM_PPORT_PER_PRIO_TRAFFIC_COUNTERS; i++) - sprintf(data + (idx++) * ETH_GSTRING_LEN, "prio%d_%s", - prio, - pport_per_prio_traffic_stats_desc[i].name); + sprintf(data + (idx++) * ETH_GSTRING_LEN, + pport_per_prio_traffic_stats_desc[i].format, prio); } pfc_combined = mlx5e_query_pfc_combined(priv); for_each_set_bit(prio, &pfc_combined, NUM_PPORT_PRIO) { for (i = 0; i < NUM_PPORT_PER_PRIO_PFC_COUNTERS; i++) { - sprintf(data + (idx++) * ETH_GSTRING_LEN, "prio%d_%s", - prio, pport_per_prio_pfc_stats_desc[i].name); + sprintf(data + (idx++) * ETH_GSTRING_LEN, + pport_per_prio_pfc_stats_desc[i].format, prio); } } @@ -258,16 +257,15 @@ static void mlx5e_fill_stats_strings(struct mlx5e_priv *priv, uint8_t *data) /* per channel counters */ for (i = 0; i < priv->params.num_channels; i++) for (j = 0; j < NUM_RQ_STATS; j++) - sprintf(data + (idx++) * ETH_GSTRING_LEN, "rx%d_%s", i, - rq_stats_desc[j].name); + sprintf(data + (idx++) * ETH_GSTRING_LEN, + rq_stats_desc[j].format, i); for (tc = 0; tc < priv->params.num_tc; tc++) for (i = 0; i < priv->params.num_channels; i++) for (j = 0; j < NUM_SQ_STATS; j++) sprintf(data + (idx++) * ETH_GSTRING_LEN, - "tx%d_%s", - priv->channeltc_to_txq_map[i][tc], - sq_stats_desc[j].name); + sq_stats_desc[j].format, + priv->channeltc_to_txq_map[i][tc]); } static void mlx5e_get_strings(struct net_device *dev, diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 793d7a1f92b5..cb6defd71fc1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -105,11 +105,11 @@ static void mlx5e_update_sw_counters(struct mlx5e_priv *priv) s->rx_packets += rq_stats->packets; s->rx_bytes += rq_stats->bytes; - s->lro_packets += rq_stats->lro_packets; - s->lro_bytes += rq_stats->lro_bytes; + s->rx_lro_packets += rq_stats->lro_packets; + s->rx_lro_bytes += rq_stats->lro_bytes; s->rx_csum_none += rq_stats->csum_none; - s->rx_csum_sw += rq_stats->csum_sw; - s->rx_csum_inner += rq_stats->csum_inner; + s->rx_csum_complete += rq_stats->csum_complete; + s->rx_csum_unnecessary_inner += rq_stats->csum_unnecessary_inner; s->rx_wqe_err += rq_stats->wqe_err; s->rx_mpwqe_filler += rq_stats->mpwqe_filler; s->rx_mpwqe_frag += rq_stats->mpwqe_frag; @@ -122,24 +122,23 @@ static void mlx5e_update_sw_counters(struct mlx5e_priv *priv) s->tx_packets += sq_stats->packets; s->tx_bytes += sq_stats->bytes; - s->tso_packets += sq_stats->tso_packets; - s->tso_bytes += sq_stats->tso_bytes; - s->tso_inner_packets += sq_stats->tso_inner_packets; - s->tso_inner_bytes += sq_stats->tso_inner_bytes; + s->tx_tso_packets += sq_stats->tso_packets; + s->tx_tso_bytes += sq_stats->tso_bytes; + s->tx_tso_inner_packets += sq_stats->tso_inner_packets; + s->tx_tso_inner_bytes += sq_stats->tso_inner_bytes; s->tx_queue_stopped += sq_stats->stopped; s->tx_queue_wake += sq_stats->wake; s->tx_queue_dropped += sq_stats->dropped; - s->tx_csum_inner += sq_stats->csum_offload_inner; - tx_offload_none += sq_stats->csum_offload_none; + s->tx_csum_partial_inner += sq_stats->csum_partial_inner; + tx_offload_none += sq_stats->csum_none; } } /* Update calculated offload counters */ - s->tx_csum_offload = s->tx_packets - tx_offload_none - s->tx_csum_inner; - s->rx_csum_good = s->rx_packets - s->rx_csum_none - - s->rx_csum_sw; + s->tx_csum_partial = s->tx_packets - tx_offload_none - s->tx_csum_partial_inner; + s->rx_csum_unnecessary = s->rx_packets - s->rx_csum_none - s->rx_csum_complete; - s->link_down_events = MLX5_GET(ppcnt_reg, + s->link_down_events_phy = MLX5_GET(ppcnt_reg, priv->stats.pport.phy_counters, counter_set.phys_layer_cntrs.link_down_events); } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c index bd947704b59c..022acc2e8922 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -689,7 +689,7 @@ static inline void mlx5e_handle_csum(struct net_device *netdev, if (is_first_ethertype_ip(skb)) { skb->ip_summed = CHECKSUM_COMPLETE; skb->csum = csum_unfold((__force __sum16)cqe->check_sum); - rq->stats.csum_sw++; + rq->stats.csum_complete++; return; } @@ -699,7 +699,7 @@ static inline void mlx5e_handle_csum(struct net_device *netdev, if (cqe_is_tunneled(cqe)) { skb->csum_level = 1; skb->encapsulation = 1; - rq->stats.csum_inner++; + rq->stats.csum_unnecessary_inner++; } return; } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h index 83bc32b25849..fcd490cc5610 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h @@ -42,9 +42,11 @@ be64_to_cpu(*(__be32 *)((char *)ptr + dsc[i].offset)) #define MLX5E_DECLARE_STAT(type, fld) #fld, offsetof(type, fld) +#define MLX5E_DECLARE_RX_STAT(type, fld) "rx%d_"#fld, offsetof(type, fld) +#define MLX5E_DECLARE_TX_STAT(type, fld) "tx%d_"#fld, offsetof(type, fld) struct counter_desc { - char name[ETH_GSTRING_LEN]; + char format[ETH_GSTRING_LEN]; int offset; /* Byte offset */ }; @@ -53,18 +55,18 @@ struct mlx5e_sw_stats { u64 rx_bytes; u64 tx_packets; u64 tx_bytes; - u64 tso_packets; - u64 tso_bytes; - u64 tso_inner_packets; - u64 tso_inner_bytes; - u64 lro_packets; - u64 lro_bytes; - u64 rx_csum_good; + u64 tx_tso_packets; + u64 tx_tso_bytes; + u64 tx_tso_inner_packets; + u64 tx_tso_inner_bytes; + u64 rx_lro_packets; + u64 rx_lro_bytes; + u64 rx_csum_unnecessary; u64 rx_csum_none; - u64 rx_csum_sw; - u64 rx_csum_inner; - u64 tx_csum_offload; - u64 tx_csum_inner; + u64 rx_csum_complete; + u64 rx_csum_unnecessary_inner; + u64 tx_csum_partial; + u64 tx_csum_partial_inner; u64 tx_queue_stopped; u64 tx_queue_wake; u64 tx_queue_dropped; @@ -76,7 +78,7 @@ struct mlx5e_sw_stats { u64 rx_cqe_compress_pkts; /* Special handling counters */ - u64 link_down_events; + u64 link_down_events_phy; }; static const struct counter_desc sw_stats_desc[] = { @@ -84,18 +86,18 @@ static const struct counter_desc sw_stats_desc[] = { { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_bytes) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_packets) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_bytes) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tso_packets) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tso_bytes) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tso_inner_packets) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tso_inner_bytes) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, lro_packets) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, lro_bytes) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_csum_good) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_tso_packets) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_tso_bytes) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_tso_inner_packets) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_tso_inner_bytes) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_lro_packets) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_lro_bytes) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_csum_unnecessary) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_csum_none) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_csum_sw) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_csum_inner) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_csum_offload) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_csum_inner) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_csum_complete) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_csum_unnecessary_inner) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_csum_partial) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_csum_partial_inner) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_queue_stopped) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_queue_wake) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_queue_dropped) }, @@ -105,7 +107,7 @@ static const struct counter_desc sw_stats_desc[] = { { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_buff_alloc_err) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_cqe_compress_blks) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_cqe_compress_pkts) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, link_down_events) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, link_down_events_phy) }, }; struct mlx5e_qcounter_stats { @@ -125,12 +127,6 @@ struct mlx5e_vport_stats { }; static const struct counter_desc vport_stats_desc[] = { - { "rx_vport_error_packets", - VPORT_COUNTER_OFF(received_errors.packets) }, - { "rx_vport_error_bytes", VPORT_COUNTER_OFF(received_errors.octets) }, - { "tx_vport_error_packets", - VPORT_COUNTER_OFF(transmit_errors.packets) }, - { "tx_vport_error_bytes", VPORT_COUNTER_OFF(transmit_errors.octets) }, { "rx_vport_unicast_packets", VPORT_COUNTER_OFF(received_eth_unicast.packets) }, { "rx_vport_unicast_bytes", @@ -192,94 +188,68 @@ struct mlx5e_pport_stats { }; static const struct counter_desc pport_802_3_stats_desc[] = { - { "frames_tx", PPORT_802_3_OFF(a_frames_transmitted_ok) }, - { "frames_rx", PPORT_802_3_OFF(a_frames_received_ok) }, - { "check_seq_err", PPORT_802_3_OFF(a_frame_check_sequence_errors) }, - { "alignment_err", PPORT_802_3_OFF(a_alignment_errors) }, - { "octets_tx", PPORT_802_3_OFF(a_octets_transmitted_ok) }, - { "octets_received", PPORT_802_3_OFF(a_octets_received_ok) }, - { "multicast_xmitted", PPORT_802_3_OFF(a_multicast_frames_xmitted_ok) }, - { "broadcast_xmitted", PPORT_802_3_OFF(a_broadcast_frames_xmitted_ok) }, - { "multicast_rx", PPORT_802_3_OFF(a_multicast_frames_received_ok) }, - { "broadcast_rx", PPORT_802_3_OFF(a_broadcast_frames_received_ok) }, - { "in_range_len_errors", PPORT_802_3_OFF(a_in_range_length_errors) }, - { "out_of_range_len", PPORT_802_3_OFF(a_out_of_range_length_field) }, - { "too_long_errors", PPORT_802_3_OFF(a_frame_too_long_errors) }, - { "symbol_err", PPORT_802_3_OFF(a_symbol_error_during_carrier) }, - { "mac_control_tx", PPORT_802_3_OFF(a_mac_control_frames_transmitted) }, - { "mac_control_rx", PPORT_802_3_OFF(a_mac_control_frames_received) }, - { "unsupported_op_rx", - PPORT_802_3_OFF(a_unsupported_opcodes_received) }, - { "pause_ctrl_rx", PPORT_802_3_OFF(a_pause_mac_ctrl_frames_received) }, - { "pause_ctrl_tx", - PPORT_802_3_OFF(a_pause_mac_ctrl_frames_transmitted) }, + { "tx_packets_phy", PPORT_802_3_OFF(a_frames_transmitted_ok) }, + { "rx_packets_phy", PPORT_802_3_OFF(a_frames_received_ok) }, + { "rx_crc_errors_phy", PPORT_802_3_OFF(a_frame_check_sequence_errors) }, + { "tx_bytes_phy", PPORT_802_3_OFF(a_octets_transmitted_ok) }, + { "rx_bytes_phy", PPORT_802_3_OFF(a_octets_received_ok) }, + { "tx_multicast_phy", PPORT_802_3_OFF(a_multicast_frames_xmitted_ok) }, + { "tx_broadcast_phy", PPORT_802_3_OFF(a_broadcast_frames_xmitted_ok) }, + { "rx_multicast_phy", PPORT_802_3_OFF(a_multicast_frames_received_ok) }, + { "rx_broadcast_phy", PPORT_802_3_OFF(a_broadcast_frames_received_ok) }, + { "rx_in_range_len_errors_phy", PPORT_802_3_OFF(a_in_range_length_errors) }, + { "rx_out_of_range_len_phy", PPORT_802_3_OFF(a_out_of_range_length_field) }, + { "rx_oversize_pkts_phy", PPORT_802_3_OFF(a_frame_too_long_errors) }, + { "rx_symbol_err_phy", PPORT_802_3_OFF(a_symbol_error_during_carrier) }, + { "tx_mac_control_phy", PPORT_802_3_OFF(a_mac_control_frames_transmitted) }, + { "rx_mac_control_phy", PPORT_802_3_OFF(a_mac_control_frames_received) }, + { "rx_unsupported_op_phy", PPORT_802_3_OFF(a_unsupported_opcodes_received) }, + { "rx_pause_ctrl_phy", PPORT_802_3_OFF(a_pause_mac_ctrl_frames_received) }, + { "tx_pause_ctrl_phy", PPORT_802_3_OFF(a_pause_mac_ctrl_frames_transmitted) }, }; static const struct counter_desc pport_2863_stats_desc[] = { - { "in_octets", PPORT_2863_OFF(if_in_octets) }, - { "in_ucast_pkts", PPORT_2863_OFF(if_in_ucast_pkts) }, - { "in_discards", PPORT_2863_OFF(if_in_discards) }, - { "in_errors", PPORT_2863_OFF(if_in_errors) }, - { "in_unknown_protos", PPORT_2863_OFF(if_in_unknown_protos) }, - { "out_octets", PPORT_2863_OFF(if_out_octets) }, - { "out_ucast_pkts", PPORT_2863_OFF(if_out_ucast_pkts) }, - { "out_discards", PPORT_2863_OFF(if_out_discards) }, - { "out_errors", PPORT_2863_OFF(if_out_errors) }, - { "in_multicast_pkts", PPORT_2863_OFF(if_in_multicast_pkts) }, - { "in_broadcast_pkts", PPORT_2863_OFF(if_in_broadcast_pkts) }, - { "out_multicast_pkts", PPORT_2863_OFF(if_out_multicast_pkts) }, - { "out_broadcast_pkts", PPORT_2863_OFF(if_out_broadcast_pkts) }, + { "rx_discards_phy", PPORT_2863_OFF(if_in_discards) }, + { "tx_discards_phy", PPORT_2863_OFF(if_out_discards) }, + { "tx_errors_phy", PPORT_2863_OFF(if_out_errors) }, }; static const struct counter_desc pport_2819_stats_desc[] = { - { "drop_events", PPORT_2819_OFF(ether_stats_drop_events) }, - { "octets", PPORT_2819_OFF(ether_stats_octets) }, - { "pkts", PPORT_2819_OFF(ether_stats_pkts) }, - { "broadcast_pkts", PPORT_2819_OFF(ether_stats_broadcast_pkts) }, - { "multicast_pkts", PPORT_2819_OFF(ether_stats_multicast_pkts) }, - { "crc_align_errors", PPORT_2819_OFF(ether_stats_crc_align_errors) }, - { "undersize_pkts", PPORT_2819_OFF(ether_stats_undersize_pkts) }, - { "oversize_pkts", PPORT_2819_OFF(ether_stats_oversize_pkts) }, - { "fragments", PPORT_2819_OFF(ether_stats_fragments) }, - { "jabbers", PPORT_2819_OFF(ether_stats_jabbers) }, - { "collisions", PPORT_2819_OFF(ether_stats_collisions) }, - { "p64octets", PPORT_2819_OFF(ether_stats_pkts64octets) }, - { "p65to127octets", PPORT_2819_OFF(ether_stats_pkts65to127octets) }, - { "p128to255octets", PPORT_2819_OFF(ether_stats_pkts128to255octets) }, - { "p256to511octets", PPORT_2819_OFF(ether_stats_pkts256to511octets) }, - { "p512to1023octets", PPORT_2819_OFF(ether_stats_pkts512to1023octets) }, - { "p1024to1518octets", - PPORT_2819_OFF(ether_stats_pkts1024to1518octets) }, - { "p1519to2047octets", - PPORT_2819_OFF(ether_stats_pkts1519to2047octets) }, - { "p2048to4095octets", - PPORT_2819_OFF(ether_stats_pkts2048to4095octets) }, - { "p4096to8191octets", - PPORT_2819_OFF(ether_stats_pkts4096to8191octets) }, - { "p8192to10239octets", - PPORT_2819_OFF(ether_stats_pkts8192to10239octets) }, + { "rx_undersize_pkts_phy", PPORT_2819_OFF(ether_stats_undersize_pkts) }, + { "rx_fragments_phy", PPORT_2819_OFF(ether_stats_fragments) }, + { "rx_jabbers_phy", PPORT_2819_OFF(ether_stats_jabbers) }, + { "rx_64_bytes_phy", PPORT_2819_OFF(ether_stats_pkts64octets) }, + { "rx_65_to_127_bytes_phy", PPORT_2819_OFF(ether_stats_pkts65to127octets) }, + { "rx_128_to_255_bytes_phy", PPORT_2819_OFF(ether_stats_pkts128to255octets) }, + { "rx_256_to_511_bytes_phy", PPORT_2819_OFF(ether_stats_pkts256to511octets) }, + { "rx_512_to_1023_bytes_phy", PPORT_2819_OFF(ether_stats_pkts512to1023octets) }, + { "rx_1024_to_1518_bytes_phy", PPORT_2819_OFF(ether_stats_pkts1024to1518octets) }, + { "rx_1519_to_2047_bytes_phy", PPORT_2819_OFF(ether_stats_pkts1519to2047octets) }, + { "rx_2048_to_4095_bytes_phy", PPORT_2819_OFF(ether_stats_pkts2048to4095octets) }, + { "rx_4096_to_8191_bytes_phy", PPORT_2819_OFF(ether_stats_pkts4096to8191octets) }, + { "rx_8192_to_10239_bytes_phy", PPORT_2819_OFF(ether_stats_pkts8192to10239octets) }, }; static const struct counter_desc pport_per_prio_traffic_stats_desc[] = { - { "rx_octets", PPORT_PER_PRIO_OFF(rx_octets) }, - { "rx_frames", PPORT_PER_PRIO_OFF(rx_frames) }, - { "tx_octets", PPORT_PER_PRIO_OFF(tx_octets) }, - { "tx_frames", PPORT_PER_PRIO_OFF(tx_frames) }, + { "rx_prio%d_bytes", PPORT_PER_PRIO_OFF(rx_octets) }, + { "rx_prio%d_packets", PPORT_PER_PRIO_OFF(rx_frames) }, + { "tx_prio%d_bytes", PPORT_PER_PRIO_OFF(tx_octets) }, + { "tx_prio%d_packets", PPORT_PER_PRIO_OFF(tx_frames) }, }; static const struct counter_desc pport_per_prio_pfc_stats_desc[] = { - { "rx_pause", PPORT_PER_PRIO_OFF(rx_pause) }, - { "rx_pause_duration", PPORT_PER_PRIO_OFF(rx_pause_duration) }, - { "tx_pause", PPORT_PER_PRIO_OFF(tx_pause) }, - { "tx_pause_duration", PPORT_PER_PRIO_OFF(tx_pause_duration) }, - { "rx_pause_transition", PPORT_PER_PRIO_OFF(rx_pause_transition) }, + { "rx_prio%d_pause", PPORT_PER_PRIO_OFF(rx_pause) }, + { "rx_prio%d_pause_duration", PPORT_PER_PRIO_OFF(rx_pause_duration) }, + { "tx_prio%d_pause", PPORT_PER_PRIO_OFF(tx_pause) }, + { "tx_prio%d_pause_duration", PPORT_PER_PRIO_OFF(tx_pause_duration) }, + { "rx_prio%d_pause_transition", PPORT_PER_PRIO_OFF(rx_pause_transition) }, }; struct mlx5e_rq_stats { u64 packets; u64 bytes; - u64 csum_sw; - u64 csum_inner; + u64 csum_complete; + u64 csum_unnecessary_inner; u64 csum_none; u64 lro_packets; u64 lro_bytes; @@ -292,19 +262,19 @@ struct mlx5e_rq_stats { }; static const struct counter_desc rq_stats_desc[] = { - { MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, packets) }, - { MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, bytes) }, - { MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, csum_sw) }, - { MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, csum_inner) }, - { MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, csum_none) }, - { MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, lro_packets) }, - { MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, lro_bytes) }, - { MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, wqe_err) }, - { MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, mpwqe_filler) }, - { MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, mpwqe_frag) }, - { MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, buff_alloc_err) }, - { MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, cqe_compress_blks) }, - { MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, cqe_compress_pkts) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, packets) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, bytes) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, csum_complete) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, csum_unnecessary_inner) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, csum_none) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, lro_packets) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, lro_bytes) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, wqe_err) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, mpwqe_filler) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, mpwqe_frag) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, buff_alloc_err) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, cqe_compress_blks) }, + { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, cqe_compress_pkts) }, }; struct mlx5e_sq_stats { @@ -315,28 +285,28 @@ struct mlx5e_sq_stats { u64 tso_bytes; u64 tso_inner_packets; u64 tso_inner_bytes; - u64 csum_offload_inner; + u64 csum_partial_inner; u64 nop; /* less likely accessed in data path */ - u64 csum_offload_none; + u64 csum_none; u64 stopped; u64 wake; u64 dropped; }; static const struct counter_desc sq_stats_desc[] = { - { MLX5E_DECLARE_STAT(struct mlx5e_sq_stats, packets) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sq_stats, bytes) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sq_stats, tso_packets) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sq_stats, tso_bytes) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sq_stats, tso_inner_packets) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sq_stats, tso_inner_bytes) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sq_stats, csum_offload_inner) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sq_stats, nop) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sq_stats, csum_offload_none) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sq_stats, stopped) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sq_stats, wake) }, - { MLX5E_DECLARE_STAT(struct mlx5e_sq_stats, dropped) }, + { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, packets) }, + { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, bytes) }, + { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, tso_packets) }, + { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, tso_bytes) }, + { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, tso_inner_packets) }, + { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, tso_inner_bytes) }, + { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, csum_partial_inner) }, + { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, nop) }, + { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, csum_none) }, + { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, stopped) }, + { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, wake) }, + { MLX5E_DECLARE_TX_STAT(struct mlx5e_sq_stats, dropped) }, }; #define NUM_SW_COUNTERS ARRAY_SIZE(sw_stats_desc) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c index b000ddc29553..5a750b9cd006 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c @@ -192,12 +192,12 @@ static netdev_tx_t mlx5e_sq_xmit(struct mlx5e_sq *sq, struct sk_buff *skb) if (skb->encapsulation) { eseg->cs_flags |= MLX5_ETH_WQE_L3_INNER_CSUM | MLX5_ETH_WQE_L4_INNER_CSUM; - sq->stats.csum_offload_inner++; + sq->stats.csum_partial_inner++; } else { eseg->cs_flags |= MLX5_ETH_WQE_L4_CSUM; } } else - sq->stats.csum_offload_none++; + sq->stats.csum_none++; if (sq->cc != sq->prev_cc) { sq->prev_cc = sq->cc; -- cgit v1.2.3 From 3f4c68cfde30caa1f6d8368fd19590671411ade2 Mon Sep 17 00:00:00 2001 From: Sunil Goutham Date: Mon, 27 Jun 2016 15:30:02 +0530 Subject: net: thunderx: Fix link status reporting Check for SMU RX local/remote faults along with SPU LINK status. Otherwise at times link is UP at our end but DOWN at link partner's side. Also due to an issue in BGX it's rarely seen that initialization doesn't happen properly and SMU RX reports faults with everything fine at SPU. This patch tries to reinitialize LMAC to fix it. Also fixed LMAC disable sequence to properly bring down link. Signed-off-by: Sunil Goutham Signed-off-by: Tao Wang Signed-off-by: David S. Miller --- drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 91 +++++++++++++++-------- drivers/net/ethernet/cavium/thunder/thunder_bgx.h | 2 + 2 files changed, 62 insertions(+), 31 deletions(-) diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c index 3ed21988626b..63a39ac97d53 100644 --- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c +++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c @@ -551,7 +551,9 @@ static int bgx_xaui_check_link(struct lmac *lmac) } /* Clear rcvflt bit (latching high) and read it back */ - bgx_reg_modify(bgx, lmacid, BGX_SPUX_STATUS2, SPU_STATUS2_RCVFLT); + if (bgx_reg_read(bgx, lmacid, BGX_SPUX_STATUS2) & SPU_STATUS2_RCVFLT) + bgx_reg_modify(bgx, lmacid, + BGX_SPUX_STATUS2, SPU_STATUS2_RCVFLT); if (bgx_reg_read(bgx, lmacid, BGX_SPUX_STATUS2) & SPU_STATUS2_RCVFLT) { dev_err(&bgx->pdev->dev, "Receive fault, retry training\n"); if (bgx->use_training) { @@ -570,13 +572,6 @@ static int bgx_xaui_check_link(struct lmac *lmac) return -1; } - /* Wait for MAC RX to be ready */ - if (bgx_poll_reg(bgx, lmacid, BGX_SMUX_RX_CTL, - SMU_RX_CTL_STATUS, true)) { - dev_err(&bgx->pdev->dev, "SMU RX link not okay\n"); - return -1; - } - /* Wait for BGX RX to be idle */ if (bgx_poll_reg(bgx, lmacid, BGX_SMUX_CTL, SMU_CTL_RX_IDLE, false)) { dev_err(&bgx->pdev->dev, "SMU RX not idle\n"); @@ -589,29 +584,30 @@ static int bgx_xaui_check_link(struct lmac *lmac) return -1; } - if (bgx_reg_read(bgx, lmacid, BGX_SPUX_STATUS2) & SPU_STATUS2_RCVFLT) { - dev_err(&bgx->pdev->dev, "Receive fault\n"); - return -1; - } - - /* Receive link is latching low. Force it high and verify it */ - bgx_reg_modify(bgx, lmacid, BGX_SPUX_STATUS1, SPU_STATUS1_RCV_LNK); - if (bgx_poll_reg(bgx, lmacid, BGX_SPUX_STATUS1, - SPU_STATUS1_RCV_LNK, false)) { - dev_err(&bgx->pdev->dev, "SPU receive link down\n"); - return -1; - } - + /* Clear receive packet disable */ cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_MISC_CONTROL); cfg &= ~SPU_MISC_CTL_RX_DIS; bgx_reg_write(bgx, lmacid, BGX_SPUX_MISC_CONTROL, cfg); - return 0; + + /* Check for MAC RX faults */ + cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_RX_CTL); + /* 0 - Link is okay, 1 - Local fault, 2 - Remote fault */ + cfg &= SMU_RX_CTL_STATUS; + if (!cfg) + return 0; + + /* Rx local/remote fault seen. + * Do lmac reinit to see if condition recovers + */ + bgx_lmac_xaui_init(bgx, lmacid, bgx->lmac_type); + + return -1; } static void bgx_poll_for_link(struct work_struct *work) { struct lmac *lmac; - u64 link; + u64 spu_link, smu_link; lmac = container_of(work, struct lmac, dwork.work); @@ -621,8 +617,11 @@ static void bgx_poll_for_link(struct work_struct *work) bgx_poll_reg(lmac->bgx, lmac->lmacid, BGX_SPUX_STATUS1, SPU_STATUS1_RCV_LNK, false); - link = bgx_reg_read(lmac->bgx, lmac->lmacid, BGX_SPUX_STATUS1); - if (link & SPU_STATUS1_RCV_LNK) { + spu_link = bgx_reg_read(lmac->bgx, lmac->lmacid, BGX_SPUX_STATUS1); + smu_link = bgx_reg_read(lmac->bgx, lmac->lmacid, BGX_SMUX_RX_CTL); + + if ((spu_link & SPU_STATUS1_RCV_LNK) && + !(smu_link & SMU_RX_CTL_STATUS)) { lmac->link_up = 1; if (lmac->bgx->lmac_type == BGX_MODE_XLAUI) lmac->last_speed = 40000; @@ -636,9 +635,15 @@ static void bgx_poll_for_link(struct work_struct *work) } if (lmac->last_link != lmac->link_up) { + if (lmac->link_up) { + if (bgx_xaui_check_link(lmac)) { + /* Errors, clear link_up state */ + lmac->link_up = 0; + lmac->last_speed = SPEED_UNKNOWN; + lmac->last_duplex = DUPLEX_UNKNOWN; + } + } lmac->last_link = lmac->link_up; - if (lmac->link_up) - bgx_xaui_check_link(lmac); } queue_delayed_work(lmac->check_link, &lmac->dwork, HZ * 2); @@ -710,7 +715,7 @@ static int bgx_lmac_enable(struct bgx *bgx, u8 lmacid) static void bgx_lmac_disable(struct bgx *bgx, u8 lmacid) { struct lmac *lmac; - u64 cmrx_cfg; + u64 cfg; lmac = &bgx->lmac[lmacid]; if (lmac->check_link) { @@ -719,9 +724,33 @@ static void bgx_lmac_disable(struct bgx *bgx, u8 lmacid) destroy_workqueue(lmac->check_link); } - cmrx_cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); - cmrx_cfg &= ~(1 << 15); - bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cmrx_cfg); + /* Disable packet reception */ + cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); + cfg &= ~CMR_PKT_RX_EN; + bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg); + + /* Give chance for Rx/Tx FIFO to get drained */ + bgx_poll_reg(bgx, lmacid, BGX_CMRX_RX_FIFO_LEN, (u64)0x1FFF, true); + bgx_poll_reg(bgx, lmacid, BGX_CMRX_TX_FIFO_LEN, (u64)0x3FFF, true); + + /* Disable packet transmission */ + cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); + cfg &= ~CMR_PKT_TX_EN; + bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg); + + /* Disable serdes lanes */ + if (!lmac->is_sgmii) + bgx_reg_modify(bgx, lmacid, + BGX_SPUX_CONTROL1, SPU_CTL_LOW_POWER); + else + bgx_reg_modify(bgx, lmacid, + BGX_GMP_PCS_MRX_CTL, PCS_MRX_CTL_PWR_DN); + + /* Disable LMAC */ + cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); + cfg &= ~CMR_EN; + bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg); + bgx_flush_dmac_addrs(bgx, lmacid); if ((bgx->lmac_type != BGX_MODE_XFI) && diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h index 149e179363a1..42010d2e5ddf 100644 --- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h +++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h @@ -41,6 +41,7 @@ #define BGX_CMRX_RX_STAT10 0xC0 #define BGX_CMRX_RX_BP_DROP 0xC8 #define BGX_CMRX_RX_DMAC_CTL 0x0E8 +#define BGX_CMRX_RX_FIFO_LEN 0x108 #define BGX_CMR_RX_DMACX_CAM 0x200 #define RX_DMACX_CAM_EN BIT_ULL(48) #define RX_DMACX_CAM_LMACID(x) (x << 49) @@ -50,6 +51,7 @@ #define BGX_CMR_CHAN_MSK_AND 0x450 #define BGX_CMR_BIST_STATUS 0x460 #define BGX_CMR_RX_LMACS 0x468 +#define BGX_CMRX_TX_FIFO_LEN 0x518 #define BGX_CMRX_TX_STAT0 0x600 #define BGX_CMRX_TX_STAT1 0x608 #define BGX_CMRX_TX_STAT2 0x610 -- cgit v1.2.3 From 3e29adba567306504e99b8363edf2d47c19dbe1b Mon Sep 17 00:00:00 2001 From: Sunil Goutham Date: Mon, 27 Jun 2016 15:30:03 +0530 Subject: net: thunderx: Fix TL4 configuration for secondary Qsets TL4 calculation for a given SQ of secondary Qsets is incorrect and goes out of bounds and also for some SQ's TL4 chosen will transmit data via a different BGX interface and not same as primary Qset's interface. This patch fixes this issue. Signed-off-by: Sunil Goutham Signed-off-by: David S. Miller --- drivers/net/ethernet/cavium/thunder/nic_main.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/cavium/thunder/nic_main.c b/drivers/net/ethernet/cavium/thunder/nic_main.c index 95f17f8cadac..16ed20357c5c 100644 --- a/drivers/net/ethernet/cavium/thunder/nic_main.c +++ b/drivers/net/ethernet/cavium/thunder/nic_main.c @@ -499,6 +499,7 @@ static void nic_tx_channel_cfg(struct nicpf *nic, u8 vnic, u32 rr_quantum; u8 sq_idx = sq->sq_num; u8 pqs_vnic; + int svf; if (sq->sqs_mode) pqs_vnic = nic->pqs_vf[vnic]; @@ -511,10 +512,19 @@ static void nic_tx_channel_cfg(struct nicpf *nic, u8 vnic, /* 24 bytes for FCS, IPG and preamble */ rr_quantum = ((NIC_HW_MAX_FRS + 24) / 4); - tl4 = (lmac * NIC_TL4_PER_LMAC) + (bgx * NIC_TL4_PER_BGX); + if (!sq->sqs_mode) { + tl4 = (lmac * NIC_TL4_PER_LMAC) + (bgx * NIC_TL4_PER_BGX); + } else { + for (svf = 0; svf < MAX_SQS_PER_VF; svf++) { + if (nic->vf_sqs[pqs_vnic][svf] == vnic) + break; + } + tl4 = (MAX_LMAC_PER_BGX * NIC_TL4_PER_LMAC); + tl4 += (lmac * NIC_TL4_PER_LMAC * MAX_SQS_PER_VF); + tl4 += (svf * NIC_TL4_PER_LMAC); + tl4 += (bgx * NIC_TL4_PER_BGX); + } tl4 += sq_idx; - if (sq->sqs_mode) - tl4 += vnic * 8; tl3 = tl4 / (NIC_MAX_TL4 / NIC_MAX_TL3); nic_reg_write(nic, NIC_PF_QSET_0_127_SQ_0_7_CFG2 | -- cgit v1.2.3 From 42482b4546336ecd93acdd95e435bafd7a4c581c Mon Sep 17 00:00:00 2001 From: Rodrigo Vivi Date: Thu, 23 Jun 2016 14:50:35 -0700 Subject: drm/i915: Add more Kabylake PCI IDs. The spec has been updated adding new PCI IDs. Signed-off-by: Rodrigo Vivi Reviewed-by: Dhinakaran Pandiyan Link: http://patchwork.freedesktop.org/patch/msgid/1466718636-19675-1-git-send-email-rodrigo.vivi@intel.com (cherry picked from commit 33d9391d3020e069dca98fa87a604c037beb2b9e) Signed-off-by: Jani Nikula --- include/drm/i915_pciids.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/drm/i915_pciids.h b/include/drm/i915_pciids.h index 9094599a1150..87dde1c48fbf 100644 --- a/include/drm/i915_pciids.h +++ b/include/drm/i915_pciids.h @@ -309,6 +309,7 @@ INTEL_VGA_DEVICE(0x5906, info), /* ULT GT1 */ \ INTEL_VGA_DEVICE(0x590E, info), /* ULX GT1 */ \ INTEL_VGA_DEVICE(0x5902, info), /* DT GT1 */ \ + INTEL_VGA_DEVICE(0x5908, info), /* Halo GT1 */ \ INTEL_VGA_DEVICE(0x590B, info), /* Halo GT1 */ \ INTEL_VGA_DEVICE(0x590A, info) /* SRV GT1 */ @@ -322,7 +323,9 @@ INTEL_VGA_DEVICE(0x591D, info) /* WKS GT2 */ #define INTEL_KBL_GT3_IDS(info) \ + INTEL_VGA_DEVICE(0x5923, info), /* ULT GT3 */ \ INTEL_VGA_DEVICE(0x5926, info), /* ULT GT3 */ \ + INTEL_VGA_DEVICE(0x5927, info), /* ULT GT3 */ \ INTEL_VGA_DEVICE(0x592B, info), /* Halo GT3 */ \ INTEL_VGA_DEVICE(0x592A, info) /* SRV GT3 */ -- cgit v1.2.3 From 6b9dc6a474fd4e025c615ed4582735360005727c Mon Sep 17 00:00:00 2001 From: Rodrigo Vivi Date: Thu, 23 Jun 2016 14:50:36 -0700 Subject: drm/i915: Removing PCI IDs that are no longer listed as Kabylake. This is unusual. Usually IDs listed on early stages of platform definition are kept there as reserved for later use. However these IDs here are not listed anymore in any of steppings and devices IDs tables for Kabylake on configurations overview section of BSpec. So it is better removing them before they become used in any other future platform. Signed-off-by: Rodrigo Vivi Reviewed-by: Dhinakaran Pandiyan Link: http://patchwork.freedesktop.org/patch/msgid/1466718636-19675-2-git-send-email-rodrigo.vivi@intel.com (cherry picked from commit a922eb8d4581c883c37ce6e12dca9ff2cb1ea723) Signed-off-by: Jani Nikula --- include/drm/i915_pciids.h | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/include/drm/i915_pciids.h b/include/drm/i915_pciids.h index 87dde1c48fbf..33466bfc6440 100644 --- a/include/drm/i915_pciids.h +++ b/include/drm/i915_pciids.h @@ -325,15 +325,10 @@ #define INTEL_KBL_GT3_IDS(info) \ INTEL_VGA_DEVICE(0x5923, info), /* ULT GT3 */ \ INTEL_VGA_DEVICE(0x5926, info), /* ULT GT3 */ \ - INTEL_VGA_DEVICE(0x5927, info), /* ULT GT3 */ \ - INTEL_VGA_DEVICE(0x592B, info), /* Halo GT3 */ \ - INTEL_VGA_DEVICE(0x592A, info) /* SRV GT3 */ + INTEL_VGA_DEVICE(0x5927, info) /* ULT GT3 */ #define INTEL_KBL_GT4_IDS(info) \ - INTEL_VGA_DEVICE(0x5932, info), /* DT GT4 */ \ - INTEL_VGA_DEVICE(0x593B, info), /* Halo GT4 */ \ - INTEL_VGA_DEVICE(0x593A, info), /* SRV GT4 */ \ - INTEL_VGA_DEVICE(0x593D, info) /* WKS GT4 */ + INTEL_VGA_DEVICE(0x593B, info) /* Halo GT4 */ #define INTEL_KBL_IDS(info) \ INTEL_KBL_GT1_IDS(info), \ -- cgit v1.2.3 From 96183182ad05d1ce31b9048921c12bf4ad621eaf Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Mon, 27 Jun 2016 20:48:53 +0800 Subject: ibmvnic: fix to use list_for_each_safe() when delete items Since we will remove items off the list using list_del() we need to use a safe version of the list_for_each() macro aptly named list_for_each_safe(). Signed-off-by: Wei Yongjun Signed-off-by: David S. Miller --- drivers/net/ethernet/ibm/ibmvnic.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index 864cb21351a4..ecdb6854a898 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -2121,7 +2121,7 @@ static void handle_error_info_rsp(union ibmvnic_crq *crq, struct ibmvnic_adapter *adapter) { struct device *dev = &adapter->vdev->dev; - struct ibmvnic_error_buff *error_buff; + struct ibmvnic_error_buff *error_buff, *tmp; unsigned long flags; bool found = false; int i; @@ -2133,7 +2133,7 @@ static void handle_error_info_rsp(union ibmvnic_crq *crq, } spin_lock_irqsave(&adapter->error_list_lock, flags); - list_for_each_entry(error_buff, &adapter->errors, list) + list_for_each_entry_safe(error_buff, tmp, &adapter->errors, list) if (error_buff->error_id == crq->request_error_rsp.error_id) { found = true; list_del(&error_buff->list); @@ -3141,14 +3141,14 @@ static void handle_request_ras_comp_num_rsp(union ibmvnic_crq *crq, static void ibmvnic_free_inflight(struct ibmvnic_adapter *adapter) { - struct ibmvnic_inflight_cmd *inflight_cmd; + struct ibmvnic_inflight_cmd *inflight_cmd, *tmp1; struct device *dev = &adapter->vdev->dev; - struct ibmvnic_error_buff *error_buff; + struct ibmvnic_error_buff *error_buff, *tmp2; unsigned long flags; unsigned long flags2; spin_lock_irqsave(&adapter->inflight_lock, flags); - list_for_each_entry(inflight_cmd, &adapter->inflight, list) { + list_for_each_entry_safe(inflight_cmd, tmp1, &adapter->inflight, list) { switch (inflight_cmd->crq.generic.cmd) { case LOGIN: dma_unmap_single(dev, adapter->login_buf_token, @@ -3165,8 +3165,8 @@ static void ibmvnic_free_inflight(struct ibmvnic_adapter *adapter) break; case REQUEST_ERROR_INFO: spin_lock_irqsave(&adapter->error_list_lock, flags2); - list_for_each_entry(error_buff, &adapter->errors, - list) { + list_for_each_entry_safe(error_buff, tmp2, + &adapter->errors, list) { dma_unmap_single(dev, error_buff->dma, error_buff->len, DMA_FROM_DEVICE); -- cgit v1.2.3 From a3d2e9f8eb1487f4191ff08ce2d3d63702c65a90 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 27 Jun 2016 17:38:50 +0200 Subject: tcp: do not send too big packets at retransmit time Arjun reported a bug in TCP stack and bisected it to a recent commit. In case where we process SACK, we can coalesce multiple skbs into fat ones (tcp_shift_skb_data()), to lower write queue overhead, because we do not expect to retransmit these packets. However, SACK reneging can happen, forcing the sender to retransmit all these packets. If skb->len is above 64KB, we then send buggy IP packets that could hang TSO engine on cxgb4. Neal suggested to use tcp_tso_autosize() instead of tp->gso_segs so that we cook packets of optimal size vs TCP/pacing. Thanks to Arjun for reporting the bug and running the tests ! Fixes: 10d3be569243 ("tcp-tso: do not split TSO packets at retransmit time") Signed-off-by: Eric Dumazet Reported-by: Arjun V Tested-by: Arjun V Acked-by: Neal Cardwell Signed-off-by: David S. Miller --- net/ipv4/tcp_output.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 8bd9911fdd16..e00e972c4e6a 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -2751,7 +2751,7 @@ void tcp_xmit_retransmit_queue(struct sock *sk) struct tcp_sock *tp = tcp_sk(sk); struct sk_buff *skb; struct sk_buff *hole = NULL; - u32 last_lost; + u32 max_segs, last_lost; int mib_idx; int fwd_rexmitting = 0; @@ -2771,6 +2771,7 @@ void tcp_xmit_retransmit_queue(struct sock *sk) last_lost = tp->snd_una; } + max_segs = tcp_tso_autosize(sk, tcp_current_mss(sk)); tcp_for_write_queue_from(skb, sk) { __u8 sacked = TCP_SKB_CB(skb)->sacked; int segs; @@ -2784,6 +2785,10 @@ void tcp_xmit_retransmit_queue(struct sock *sk) segs = tp->snd_cwnd - tcp_packets_in_flight(tp); if (segs <= 0) return; + /* In case tcp_shift_skb_data() have aggregated large skbs, + * we need to make sure not sending too bigs TSO packets + */ + segs = min_t(int, segs, max_segs); if (fwd_rexmitting) { begin_fwd: -- cgit v1.2.3 From 565ce8f32ac4a233b474f401e1d3e7e1de0a31fd Mon Sep 17 00:00:00 2001 From: Nikolay Aleksandrov Date: Mon, 27 Jun 2016 18:34:42 +0200 Subject: net: bridge: fix vlan stats continue counter I made a dumb off-by-one mistake when I added the vlan stats counter dumping code. The increment should happen before the check, not after otherwise we miss one entry when we continue dumping. Fixes: a60c090361ea ("bridge: netlink: export per-vlan stats") Signed-off-by: Nikolay Aleksandrov Signed-off-by: David S. Miller --- net/bridge/br_netlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index a5343c7232bf..85e89f693589 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -1273,7 +1273,7 @@ static int br_fill_linkxstats(struct sk_buff *skb, const struct net_device *dev, struct bridge_vlan_xstats vxi; struct br_vlan_stats stats; - if (vl_idx++ < *prividx) + if (++vl_idx < *prividx) continue; memset(&vxi, 0, sizeof(vxi)); vxi.vid = v->vid; -- cgit v1.2.3 From ceb56070359b7329b5678b5d95a376fcb24767be Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Mon, 27 Jun 2016 21:38:11 +0200 Subject: bpf, perf: delay release of BPF prog after grace period Commit dead9f29ddcc ("perf: Fix race in BPF program unregister") moved destruction of BPF program from free_event_rcu() callback to __free_event(), which is problematic if used with tail calls: if prog A is attached as trace event directly, but at the same time present in a tail call map used by another trace event program elsewhere, then we need to delay destruction via RCU grace period since it can still be in use by the program doing the tail call (the prog first needs to be dropped from the tail call map, then trace event with prog A attached destroyed, so we get immediate destruction). Fixes: dead9f29ddcc ("perf: Fix race in BPF program unregister") Signed-off-by: Daniel Borkmann Acked-by: Alexei Starovoitov Cc: Jann Horn Signed-off-by: David S. Miller --- include/linux/bpf.h | 4 ++++ kernel/events/core.c | 2 +- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 8269cafc6eb1..0de4de6dd43e 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -264,6 +264,10 @@ static inline struct bpf_prog *bpf_prog_get(u32 ufd) static inline void bpf_prog_put(struct bpf_prog *prog) { } + +static inline void bpf_prog_put_rcu(struct bpf_prog *prog) +{ +} #endif /* CONFIG_BPF_SYSCALL */ /* verifier prototypes for helper functions called from eBPF programs */ diff --git a/kernel/events/core.c b/kernel/events/core.c index 274450efea90..d00c47b67a97 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -7531,7 +7531,7 @@ static void perf_event_free_bpf_prog(struct perf_event *event) prog = event->tp_event->prog; if (prog) { event->tp_event->prog = NULL; - bpf_prog_put(prog); + bpf_prog_put_rcu(prog); } } -- cgit v1.2.3 From 5b4d10f5e0369ed79434593b7cd8e85eebbe473f Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 27 Jun 2016 23:50:29 +0300 Subject: qlcnic: use the correct ring in qlcnic_83xx_process_rcv_ring_diag() There is a static checker warning here "warn: mask and shift to zero" and the code sets "ring" to zero every time. From looking at how QLCNIC_FETCH_RING_ID() is used in qlcnic_83xx_process_rcv_ring() the qlcnic_83xx_hndl() should be removed. Fixes: 4be41e92f7c6 ('qlcnic: 83xx data path routines') Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c index 7bd6f25b4625..607bb7d4514d 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c @@ -2220,7 +2220,7 @@ void qlcnic_83xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) if (!opcode) return; - ring = QLCNIC_FETCH_RING_ID(qlcnic_83xx_hndl(sts_data[0])); + ring = QLCNIC_FETCH_RING_ID(sts_data[0]); qlcnic_83xx_process_rcv_diag(adapter, ring, sts_data); desc = &sds_ring->desc_head[consumer]; desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM); -- cgit v1.2.3 From c041778c966c92c964033f1cdfee60a9f2b5e465 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Wed, 29 Jun 2016 10:36:39 +0200 Subject: cfg80211: fix proto in ieee80211_data_to_8023 for frames without LLC header The PDU length of incoming LLC frames is set to the total skb payload size in __ieee80211_data_to_8023() of net/wireless/util.c which incorrectly includes the length of the IEEE 802.11 header. The resulting LLC frame header has a too large PDU length, causing the llc_fixup_skb() function of net/llc/llc_input.c to reject the incoming skb, effectively breaking STP. Solve the problem by properly substracting the IEEE 802.11 frame header size from the PDU length, allowing the LLC processor to pick up the incoming control messages. Special thanks to Gerry Rozema for tracking down the regression and proposing a suitable patch. Fixes: 2d1c304cb2d5 ("cfg80211: add function for 802.3 conversion with separate output buffer") Cc: stable@vger.kernel.org Reported-by: Gerry Rozema Signed-off-by: Felix Fietkau Signed-off-by: Johannes Berg --- net/wireless/util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/wireless/util.c b/net/wireless/util.c index 4e809e978b7d..2443ee30ba5b 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -509,7 +509,7 @@ static int __ieee80211_data_to_8023(struct sk_buff *skb, struct ethhdr *ehdr, * replace EtherType */ hdrlen += ETH_ALEN + 2; else - tmp.h_proto = htons(skb->len); + tmp.h_proto = htons(skb->len - hdrlen); pskb_pull(skb, hdrlen); -- cgit v1.2.3 From 889ad4566604610804df984e1a3dd5e2c66256e5 Mon Sep 17 00:00:00 2001 From: Jarod Wilson Date: Tue, 28 Jun 2016 20:41:31 -0700 Subject: e1000e: keep VLAN interfaces functional after rxvlan off I've got a bug report about an e1000e interface, where a VLAN interface is set up on top of it: $ ip link add link ens1f0 name ens1f0.99 type vlan id 99 $ ip link set ens1f0 up $ ip link set ens1f0.99 up $ ip addr add 192.168.99.92 dev ens1f0.99 At this point, I can ping another host on vlan 99, ip 192.168.99.91. However, if I do the following: $ ethtool -K ens1f0 rxvlan off Then no traffic passes on ens1f0.99. It comes back if I toggle rxvlan on again. I'm not sure if this is actually intended behavior, or if there's a lack of software VLAN stripping fallback, or what, but things continue to work if I simply don't call e1000e_vlan_strip_disable() if there are active VLANs (plagiarizing a function from the e1000 driver here) on the interface. Also slipped a related-ish fix to the kerneldoc text for e1000e_vlan_strip_disable here... Signed-off-by: Jarod Wilson Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/ethernet/intel/e1000e/netdev.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index 75e60897b7e7..73f745205a1c 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -154,6 +154,16 @@ void __ew32(struct e1000_hw *hw, unsigned long reg, u32 val) writel(val, hw->hw_addr + reg); } +static bool e1000e_vlan_used(struct e1000_adapter *adapter) +{ + u16 vid; + + for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) + return true; + + return false; +} + /** * e1000_regdump - register printout routine * @hw: pointer to the HW structure @@ -2789,7 +2799,7 @@ static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter) } /** - * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping + * e1000e_vlan_strip_disable - helper to disable HW VLAN stripping * @adapter: board private structure to initialize **/ static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter) @@ -3443,7 +3453,8 @@ static void e1000e_set_rx_mode(struct net_device *netdev) ew32(RCTL, rctl); - if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) + if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX || + e1000e_vlan_used(adapter)) e1000e_vlan_strip_enable(adapter); else e1000e_vlan_strip_disable(adapter); -- cgit v1.2.3 From b560f03ddfb072bca65e9440ff0dc4f9b1d1f056 Mon Sep 17 00:00:00 2001 From: David Barroso Date: Tue, 28 Jun 2016 11:16:43 +0300 Subject: neigh: Explicitly declare RCU-bh read side critical section in neigh_xmit() neigh_xmit() expects to be called inside an RCU-bh read side critical section, and while one of its two current callers gets this right, the other one doesn't. More specifically, neigh_xmit() has two callers, mpls_forward() and mpls_output(), and while both callers call neigh_xmit() under rcu_read_lock(), this provides sufficient protection for neigh_xmit() only in the case of mpls_forward(), as that is always called from softirq context and therefore doesn't need explicit BH protection, while mpls_output() can be called from process context with softirqs enabled. When mpls_output() is called from process context, with softirqs enabled, we can be preempted by a softirq at any time, and RCU-bh considers the completion of a softirq as signaling the end of any pending read-side critical sections, so if we do get a softirq while we are in the part of neigh_xmit() that expects to be run inside an RCU-bh read side critical section, we can end up with an unexpected RCU grace period running right in the middle of that critical section, making things go boom. This patch fixes this impedance mismatch in the callee, by making neigh_xmit() always take rcu_read_{,un}lock_bh() around the code that expects to be treated as an RCU-bh read side critical section, as this seems a safer option than fixing it in the callers. Fixes: 4fd3d7d9e868f ("neigh: Add helper function neigh_xmit") Signed-off-by: David Barroso Signed-off-by: Lennert Buytenhek Acked-by: David Ahern Acked-by: Robert Shearman Signed-off-by: David S. Miller --- net/core/neighbour.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 29dd8cc22bbf..510cd62fcb99 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -2469,13 +2469,17 @@ int neigh_xmit(int index, struct net_device *dev, tbl = neigh_tables[index]; if (!tbl) goto out; + rcu_read_lock_bh(); neigh = __neigh_lookup_noref(tbl, addr, dev); if (!neigh) neigh = __neigh_create(tbl, addr, dev, false); err = PTR_ERR(neigh); - if (IS_ERR(neigh)) + if (IS_ERR(neigh)) { + rcu_read_unlock_bh(); goto out_kfree_skb; + } err = neigh->output(neigh, skb); + rcu_read_unlock_bh(); } else if (index == NEIGH_LINK_TABLE) { err = dev_hard_header(skb, dev, ntohs(skb->protocol), -- cgit v1.2.3 From 34c7bb4705a0a2d344b0c82eaf3d3bfa2bc9da45 Mon Sep 17 00:00:00 2001 From: Sudarsana Reddy Kalluru Date: Tue, 28 Jun 2016 07:46:03 -0400 Subject: qed: Protect the doorbell BAR with the write barriers. SPQ doorbell is currently protected with the compilation barrier. Under the stress scenarios, we may get into a state where (due to the weak ordering) several ramrod doorbells were written to the BAR with an out-of-order producer values. Need to change the barrier type to a write barrier to make sure that the write buffer is flushed after each doorbell. Signed-off-by: Sudarsana Reddy Kalluru Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_spq.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qed/qed_spq.c b/drivers/net/ethernet/qlogic/qed/qed_spq.c index 67d9893774d8..b122f6013b6c 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_spq.c +++ b/drivers/net/ethernet/qlogic/qed/qed_spq.c @@ -213,19 +213,15 @@ static int qed_spq_hw_post(struct qed_hwfn *p_hwfn, SET_FIELD(db.params, CORE_DB_DATA_AGG_VAL_SEL, DQ_XCM_CORE_SPQ_PROD_CMD); db.agg_flags = DQ_XCM_CORE_DQ_CF_CMD; - - /* validate producer is up to-date */ - rmb(); - db.spq_prod = cpu_to_le16(qed_chain_get_prod_idx(p_chain)); - /* do not reorder */ - barrier(); + /* make sure the SPQE is updated before the doorbell */ + wmb(); DOORBELL(p_hwfn, qed_db_addr(p_spq->cid, DQ_DEMS_LEGACY), *(u32 *)&db); /* make sure doorbell is rang */ - mmiowb(); + wmb(); DP_VERBOSE(p_hwfn, QED_MSG_SPQ, "Doorbelled [0x%08x, CID 0x%08x] with Flags: %02x agg_params: %02x, prod: %04x\n", -- cgit v1.2.3 From d913d3a763a6f66a862a6eafcf6da89a7905832a Mon Sep 17 00:00:00 2001 From: Samuel Gauthier Date: Tue, 28 Jun 2016 17:22:26 +0200 Subject: openvswitch: fix conntrack netlink event delivery Only the first and last netlink message for a particular conntrack are actually sent. The first message is sent through nf_conntrack_confirm when the conntrack is committed. The last one is sent when the conntrack is destroyed on timeout. The other conntrack state change messages are not advertised. When the conntrack subsystem is used from netfilter, nf_conntrack_confirm is called for each packet, from the postrouting hook, which in turn calls nf_ct_deliver_cached_events to send the state change netlink messages. This commit fixes the problem by calling nf_ct_deliver_cached_events in the non-commit case as well. Fixes: 7f8a436eaa2c ("openvswitch: Add conntrack action") CC: Joe Stringer CC: Justin Pettit CC: Andy Zhou CC: Thomas Graf Signed-off-by: Samuel Gauthier Acked-by: Joe Stringer Signed-off-by: David S. Miller --- net/openvswitch/conntrack.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c index 3d5feede962d..d84312584ee4 100644 --- a/net/openvswitch/conntrack.c +++ b/net/openvswitch/conntrack.c @@ -818,8 +818,18 @@ static int ovs_ct_lookup(struct net *net, struct sw_flow_key *key, */ state = OVS_CS_F_TRACKED | OVS_CS_F_NEW | OVS_CS_F_RELATED; __ovs_ct_update_key(key, state, &info->zone, exp->master); - } else - return __ovs_ct_lookup(net, key, info, skb); + } else { + struct nf_conn *ct; + int err; + + err = __ovs_ct_lookup(net, key, info, skb); + if (err) + return err; + + ct = (struct nf_conn *)skb->nfct; + if (ct) + nf_ct_deliver_cached_events(ct); + } return 0; } -- cgit v1.2.3 From 3a8bd717ee3e0508fc0dd517b97e950989e15f8c Mon Sep 17 00:00:00 2001 From: Rex Zhu Date: Mon, 27 Jun 2016 14:46:47 +0800 Subject: drm/amd/powerplay: Workaround for Memory EDC Error on Polaris10. Signed-off-by: Rex Zhu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- .../gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c | 26 ++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c index d23dcce6c03c..d15584c84595 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c @@ -2924,6 +2924,31 @@ static int polaris10_set_private_data_based_on_pptable(struct pp_hwmgr *hwmgr) return 0; } +int polaris10_patch_voltage_workaround(struct pp_hwmgr *hwmgr) +{ + struct phm_ppt_v1_information *table_info = + (struct phm_ppt_v1_information *)(hwmgr->pptable); + struct phm_ppt_v1_clock_voltage_dependency_table *dep_mclk_table = + table_info->vdd_dep_on_mclk; + struct phm_ppt_v1_voltage_lookup_table *lookup_table = + table_info->vddc_lookup_table; + uint32_t i; + + if (hwmgr->chip_id == CHIP_POLARIS10 && hwmgr->hw_revision == 0xC7) { + if (lookup_table->entries[dep_mclk_table->entries[dep_mclk_table->count-1].vddInd].us_vdd >= 1000) + return 0; + + for (i = 0; i < lookup_table->count; i++) { + if (lookup_table->entries[i].us_vdd < 0xff01 && lookup_table->entries[i].us_vdd >= 1000) { + dep_mclk_table->entries[dep_mclk_table->count-1].vddInd = (uint8_t) i; + return 0; + } + } + } + return 0; +} + + int polaris10_hwmgr_backend_init(struct pp_hwmgr *hwmgr) { struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); @@ -3001,6 +3026,7 @@ int polaris10_hwmgr_backend_init(struct pp_hwmgr *hwmgr) polaris10_set_features_platform_caps(hwmgr); + polaris10_patch_voltage_workaround(hwmgr); polaris10_init_dpm_defaults(hwmgr); /* Get leakage voltage based on leakage ID. */ -- cgit v1.2.3 From 0636e0d666e0238fa22348172c20a49f42a94395 Mon Sep 17 00:00:00 2001 From: Rex Zhu Date: Mon, 27 Jun 2016 17:30:24 +0800 Subject: drm/amd/powerplay: fix issue uvd dpm can't enabled on Polaris11. 1. Populate correct value of VDDCI voltage for SMC SAMU, VCE, and UVD levels depending on whether VDDCi control is SVI2 or GPIO. 2. Populate SMC ACPI minimum voltage using VBIOS boot SCLK and MCLK When static voltage is configured as VDDCI, driver still tries to program a voltage for MM minVoltage using VDDC-VDDCI delta requirement. minVoltage should be set as boot up voltage. Signed-off-by: Rex Zhu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- .../gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c | 101 ++++++++++++--------- 1 file changed, 60 insertions(+), 41 deletions(-) diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c index d15584c84595..ec2a7ada346a 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c @@ -1423,22 +1423,19 @@ static int polaris10_populate_smc_acpi_level(struct pp_hwmgr *hwmgr, table->ACPILevel.Flags &= ~PPSMC_SWSTATE_FLAG_DC; - if (!data->sclk_dpm_key_disabled) { - /* Get MinVoltage and Frequency from DPM0, - * already converted to SMC_UL */ - sclk_frequency = data->dpm_table.sclk_table.dpm_levels[0].value; - result = polaris10_get_dependency_volt_by_clk(hwmgr, - table_info->vdd_dep_on_sclk, - table->ACPILevel.SclkFrequency, - &table->ACPILevel.MinVoltage, &mvdd); - PP_ASSERT_WITH_CODE((0 == result), - "Cannot find ACPI VDDC voltage value " - "in Clock Dependency Table", ); - } else { - sclk_frequency = data->vbios_boot_state.sclk_bootup_value; - table->ACPILevel.MinVoltage = - data->vbios_boot_state.vddc_bootup_value * VOLTAGE_SCALE; - } + + /* Get MinVoltage and Frequency from DPM0, + * already converted to SMC_UL */ + sclk_frequency = data->dpm_table.sclk_table.dpm_levels[0].value; + result = polaris10_get_dependency_volt_by_clk(hwmgr, + table_info->vdd_dep_on_sclk, + sclk_frequency, + &table->ACPILevel.MinVoltage, &mvdd); + PP_ASSERT_WITH_CODE((0 == result), + "Cannot find ACPI VDDC voltage value " + "in Clock Dependency Table", + ); + result = polaris10_calculate_sclk_params(hwmgr, sclk_frequency, &(table->ACPILevel.SclkSetting)); PP_ASSERT_WITH_CODE(result == 0, "Error retrieving Engine Clock dividers from VBIOS.", return result); @@ -1463,24 +1460,18 @@ static int polaris10_populate_smc_acpi_level(struct pp_hwmgr *hwmgr, CONVERT_FROM_HOST_TO_SMC_US(table->ACPILevel.SclkSetting.Fcw1_frac); CONVERT_FROM_HOST_TO_SMC_US(table->ACPILevel.SclkSetting.Sclk_ss_slew_rate); - if (!data->mclk_dpm_key_disabled) { - /* Get MinVoltage and Frequency from DPM0, already converted to SMC_UL */ - table->MemoryACPILevel.MclkFrequency = - data->dpm_table.mclk_table.dpm_levels[0].value; - result = polaris10_get_dependency_volt_by_clk(hwmgr, - table_info->vdd_dep_on_mclk, - table->MemoryACPILevel.MclkFrequency, - &table->MemoryACPILevel.MinVoltage, &mvdd); - PP_ASSERT_WITH_CODE((0 == result), - "Cannot find ACPI VDDCI voltage value " - "in Clock Dependency Table", - ); - } else { - table->MemoryACPILevel.MclkFrequency = - data->vbios_boot_state.mclk_bootup_value; - table->MemoryACPILevel.MinVoltage = - data->vbios_boot_state.vddci_bootup_value * VOLTAGE_SCALE; - } + + /* Get MinVoltage and Frequency from DPM0, already converted to SMC_UL */ + table->MemoryACPILevel.MclkFrequency = + data->dpm_table.mclk_table.dpm_levels[0].value; + result = polaris10_get_dependency_volt_by_clk(hwmgr, + table_info->vdd_dep_on_mclk, + table->MemoryACPILevel.MclkFrequency, + &table->MemoryACPILevel.MinVoltage, &mvdd); + PP_ASSERT_WITH_CODE((0 == result), + "Cannot find ACPI VDDCI voltage value " + "in Clock Dependency Table", + ); us_mvdd = 0; if ((POLARIS10_VOLTAGE_CONTROL_NONE == data->mvdd_control) || @@ -1525,6 +1516,7 @@ static int polaris10_populate_smc_vce_level(struct pp_hwmgr *hwmgr, struct phm_ppt_v1_mm_clock_voltage_dependency_table *mm_table = table_info->mm_dep_table; struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); + uint32_t vddci; table->VceLevelCount = (uint8_t)(mm_table->count); table->VceBootLevel = 0; @@ -1534,9 +1526,18 @@ static int polaris10_populate_smc_vce_level(struct pp_hwmgr *hwmgr, table->VceLevel[count].MinVoltage = 0; table->VceLevel[count].MinVoltage |= (mm_table->entries[count].vddc * VOLTAGE_SCALE) << VDDC_SHIFT; + + if (POLARIS10_VOLTAGE_CONTROL_BY_GPIO == data->vddci_control) + vddci = (uint32_t)phm_find_closest_vddci(&(data->vddci_voltage_table), + mm_table->entries[count].vddc - VDDC_VDDCI_DELTA); + else if (POLARIS10_VOLTAGE_CONTROL_BY_SVID2 == data->vddci_control) + vddci = mm_table->entries[count].vddc - VDDC_VDDCI_DELTA; + else + vddci = (data->vbios_boot_state.vddci_bootup_value * VOLTAGE_SCALE) << VDDCI_SHIFT; + + table->VceLevel[count].MinVoltage |= - ((mm_table->entries[count].vddc - data->vddc_vddci_delta) * - VOLTAGE_SCALE) << VDDCI_SHIFT; + (vddci * VOLTAGE_SCALE) << VDDCI_SHIFT; table->VceLevel[count].MinVoltage |= 1 << PHASES_SHIFT; /*retrieve divider value for VBIOS */ @@ -1565,6 +1566,7 @@ static int polaris10_populate_smc_samu_level(struct pp_hwmgr *hwmgr, struct phm_ppt_v1_mm_clock_voltage_dependency_table *mm_table = table_info->mm_dep_table; struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); + uint32_t vddci; table->SamuBootLevel = 0; table->SamuLevelCount = (uint8_t)(mm_table->count); @@ -1575,8 +1577,16 @@ static int polaris10_populate_smc_samu_level(struct pp_hwmgr *hwmgr, table->SamuLevel[count].Frequency = mm_table->entries[count].samclock; table->SamuLevel[count].MinVoltage |= (mm_table->entries[count].vddc * VOLTAGE_SCALE) << VDDC_SHIFT; - table->SamuLevel[count].MinVoltage |= ((mm_table->entries[count].vddc - - data->vddc_vddci_delta) * VOLTAGE_SCALE) << VDDCI_SHIFT; + + if (POLARIS10_VOLTAGE_CONTROL_BY_GPIO == data->vddci_control) + vddci = (uint32_t)phm_find_closest_vddci(&(data->vddci_voltage_table), + mm_table->entries[count].vddc - VDDC_VDDCI_DELTA); + else if (POLARIS10_VOLTAGE_CONTROL_BY_SVID2 == data->vddci_control) + vddci = mm_table->entries[count].vddc - VDDC_VDDCI_DELTA; + else + vddci = (data->vbios_boot_state.vddci_bootup_value * VOLTAGE_SCALE) << VDDCI_SHIFT; + + table->SamuLevel[count].MinVoltage |= (vddci * VOLTAGE_SCALE) << VDDCI_SHIFT; table->SamuLevel[count].MinVoltage |= 1 << PHASES_SHIFT; /* retrieve divider value for VBIOS */ @@ -1659,6 +1669,7 @@ static int polaris10_populate_smc_uvd_level(struct pp_hwmgr *hwmgr, struct phm_ppt_v1_mm_clock_voltage_dependency_table *mm_table = table_info->mm_dep_table; struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); + uint32_t vddci; table->UvdLevelCount = (uint8_t)(mm_table->count); table->UvdBootLevel = 0; @@ -1669,8 +1680,16 @@ static int polaris10_populate_smc_uvd_level(struct pp_hwmgr *hwmgr, table->UvdLevel[count].DclkFrequency = mm_table->entries[count].dclk; table->UvdLevel[count].MinVoltage |= (mm_table->entries[count].vddc * VOLTAGE_SCALE) << VDDC_SHIFT; - table->UvdLevel[count].MinVoltage |= ((mm_table->entries[count].vddc - - data->vddc_vddci_delta) * VOLTAGE_SCALE) << VDDCI_SHIFT; + + if (POLARIS10_VOLTAGE_CONTROL_BY_GPIO == data->vddci_control) + vddci = (uint32_t)phm_find_closest_vddci(&(data->vddci_voltage_table), + mm_table->entries[count].vddc - VDDC_VDDCI_DELTA); + else if (POLARIS10_VOLTAGE_CONTROL_BY_SVID2 == data->vddci_control) + vddci = mm_table->entries[count].vddc - VDDC_VDDCI_DELTA; + else + vddci = (data->vbios_boot_state.vddci_bootup_value * VOLTAGE_SCALE) << VDDCI_SHIFT; + + table->UvdLevel[count].MinVoltage |= (vddci * VOLTAGE_SCALE) << VDDCI_SHIFT; table->UvdLevel[count].MinVoltage |= 1 << PHASES_SHIFT; /* retrieve divider value for VBIOS */ @@ -1691,8 +1710,8 @@ static int polaris10_populate_smc_uvd_level(struct pp_hwmgr *hwmgr, CONVERT_FROM_HOST_TO_SMC_UL(table->UvdLevel[count].VclkFrequency); CONVERT_FROM_HOST_TO_SMC_UL(table->UvdLevel[count].DclkFrequency); CONVERT_FROM_HOST_TO_SMC_UL(table->UvdLevel[count].MinVoltage); - } + return result; } -- cgit v1.2.3 From d9d533c1483c4daf76e7e720c35896a430563ff8 Mon Sep 17 00:00:00 2001 From: Ken Wang Date: Tue, 28 Jun 2016 13:28:50 +0800 Subject: drm/amdgpu: add ACLK_CNTL setting for polaris10 This is a temporary workaround for early boards. Signed-off-by: Ken Wang Reviewed-by: Rex Zhu Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index 1a5cbaff1e34..b2ebd4fef6cf 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -47,6 +47,8 @@ #include "dce/dce_10_0_d.h" #include "dce/dce_10_0_sh_mask.h" +#include "smu/smu_7_1_3_d.h" + #define GFX8_NUM_GFX_RINGS 1 #define GFX8_NUM_COMPUTE_RINGS 8 @@ -693,6 +695,7 @@ static void gfx_v8_0_init_golden_registers(struct amdgpu_device *adev) amdgpu_program_register_sequence(adev, polaris10_golden_common_all, (const u32)ARRAY_SIZE(polaris10_golden_common_all)); + WREG32_SMC(ixCG_ACLK_CNTL, 0x0000001C); break; case CHIP_CARRIZO: amdgpu_program_register_sequence(adev, -- cgit v1.2.3 From a7f14a184e0e8e94becfc3f9608f6b0f9c339572 Mon Sep 17 00:00:00 2001 From: Rex Zhu Date: Tue, 28 Jun 2016 16:22:07 +0800 Subject: drm/amd/powerplay: workaround for UVD clock issue workaround issue that when uvd dpm disabled, uvd clock remain high on polaris10. Manually turn off the clocks. Signed-off-by: Rex Zhu Reviewed-by: Ken Wang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c index e19520c4b4b6..d9c88d13f8db 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c @@ -1106,6 +1106,10 @@ static void amdgpu_uvd_idle_work_handler(struct work_struct *work) if (fences == 0 && handles == 0) { if (adev->pm.dpm_enabled) { amdgpu_dpm_enable_uvd(adev, false); + /* just work around for uvd clock remain high even + * when uvd dpm disabled on Polaris10 */ + if (adev->asic_type == CHIP_POLARIS10) + amdgpu_asic_set_uvd_clocks(adev, 0, 0); } else { amdgpu_asic_set_uvd_clocks(adev, 0, 0); } -- cgit v1.2.3 From 91ff811f32763ea3135e832f7c1aeafc85ae1c98 Mon Sep 17 00:00:00 2001 From: Venkat Reddy Talla Date: Wed, 29 Jun 2016 15:31:27 +0530 Subject: regulator: max77620: check for valid regulator info SD4 regulator is not registered with regulator core framework in probe as there is no support in MAX77620 PMIC, removing SD4 entry from MAX77620 regulator information list and checking for valid regulator information data before configuring FPS source and FPS power up/down period to avoid NULL pointer exception if regulator not registered with core. Signed-off-by: Venkat Reddy Talla Signed-off-by: Mark Brown --- drivers/regulator/max77620-regulator.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/regulator/max77620-regulator.c b/drivers/regulator/max77620-regulator.c index 321e804aeab0..a1b49a6d538f 100644 --- a/drivers/regulator/max77620-regulator.c +++ b/drivers/regulator/max77620-regulator.c @@ -123,6 +123,9 @@ static int max77620_regulator_set_fps_src(struct max77620_regulator *pmic, unsigned int val; int ret; + if (!rinfo) + return 0; + switch (fps_src) { case MAX77620_FPS_SRC_0: case MAX77620_FPS_SRC_1: @@ -171,6 +174,9 @@ static int max77620_regulator_set_fps_slots(struct max77620_regulator *pmic, int pd = rpdata->active_fps_pd_slot; int ret = 0; + if (!rinfo) + return 0; + if (is_suspend) { pu = rpdata->suspend_fps_pu_slot; pd = rpdata->suspend_fps_pd_slot; @@ -680,7 +686,6 @@ static struct max77620_regulator_info max77620_regs_info[MAX77620_NUM_REGS] = { RAIL_SD(SD1, sd1, "in-sd1", SD1, 600000, 1550000, 12500, 0x22, SD1), RAIL_SD(SD2, sd2, "in-sd2", SDX, 600000, 3787500, 12500, 0xFF, NONE), RAIL_SD(SD3, sd3, "in-sd3", SDX, 600000, 3787500, 12500, 0xFF, NONE), - RAIL_SD(SD4, sd4, "in-sd4", SDX, 600000, 3787500, 12500, 0xFF, NONE), RAIL_LDO(LDO0, ldo0, "in-ldo0-1", N, 800000, 2375000, 25000), RAIL_LDO(LDO1, ldo1, "in-ldo0-1", N, 800000, 2375000, 25000), -- cgit v1.2.3 From 1bcbf42d2732b3fdaa8559b0dfc91567769e23c8 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 29 Jun 2016 11:19:32 -0700 Subject: nfit: fix format interface code byte order Per JEDEC Annex L Release 3 the SPD data is: Bits 9~5 00 000 = Function Undefined 00 001 = Byte addressable energy backed 00 010 = Block addressed 00 011 = Byte addressable, no energy backed All other codes reserved Bits 4~0 0 0000 = Proprietary interface 0 0001 = Standard interface 1 All other codes reserved; see Definitions of Functions ...and per the ACPI 6.1 spec: byte0: Bits 4~0 (0 or 1) byte1: Bits 9~5 (1, 2, or 3) ...so a format interface code displayed as 0x301 should be stored in the nfit as (0x1, 0x3), little-endian. Cc: Toshi Kani Cc: Rafael J. Wysocki Cc: Robert Moore Cc: Robert Elliott Link: https://bugzilla.kernel.org/show_bug.cgi?id=121161 Fixes: 30ec5fd464d5 ("nfit: fix format interface code byte order per ACPI6.1") Fixes: 5ad9a7fde07a ("acpi/nfit: Update nfit driver to comply with ACPI 6.1") Reported-by: Kristin Jacque Signed-off-by: Dan Williams --- drivers/acpi/nfit.c | 6 +++--- drivers/acpi/nfit.h | 10 +++++----- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c index 32579a7b71d5..ac6ddcc080d4 100644 --- a/drivers/acpi/nfit.c +++ b/drivers/acpi/nfit.c @@ -928,7 +928,7 @@ static ssize_t format_show(struct device *dev, { struct acpi_nfit_control_region *dcr = to_nfit_dcr(dev); - return sprintf(buf, "0x%04x\n", be16_to_cpu(dcr->code)); + return sprintf(buf, "0x%04x\n", le16_to_cpu(dcr->code)); } static DEVICE_ATTR_RO(format); @@ -961,8 +961,8 @@ static ssize_t format1_show(struct device *dev, continue; if (nfit_dcr->dcr->code == dcr->code) continue; - rc = sprintf(buf, "%#x\n", - be16_to_cpu(nfit_dcr->dcr->code)); + rc = sprintf(buf, "0x%04x\n", + le16_to_cpu(nfit_dcr->dcr->code)); break; } if (rc != ENXIO) diff --git a/drivers/acpi/nfit.h b/drivers/acpi/nfit.h index 11cb38348aef..02b9ea1e8d2e 100644 --- a/drivers/acpi/nfit.h +++ b/drivers/acpi/nfit.h @@ -53,12 +53,12 @@ enum nfit_uuids { }; /* - * Region format interface codes are stored as an array of bytes in the - * NFIT DIMM Control Region structure + * Region format interface codes are stored with the interface as the + * LSB and the function as the MSB. */ -#define NFIT_FIC_BYTE cpu_to_be16(0x101) /* byte-addressable energy backed */ -#define NFIT_FIC_BLK cpu_to_be16(0x201) /* block-addressable non-energy backed */ -#define NFIT_FIC_BYTEN cpu_to_be16(0x301) /* byte-addressable non-energy backed */ +#define NFIT_FIC_BYTE cpu_to_le16(0x101) /* byte-addressable energy backed */ +#define NFIT_FIC_BLK cpu_to_le16(0x201) /* block-addressable non-energy backed */ +#define NFIT_FIC_BYTEN cpu_to_le16(0x301) /* byte-addressable non-energy backed */ enum { NFIT_BLK_READ_FLUSH = 1, -- cgit v1.2.3 From 3c35f6edc09b239a60de87a5aeb78563fc372704 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 6 Jun 2016 16:56:49 +0100 Subject: reset: Reorder inline reset_control_get*() wrappers We're about to split the current API into two, where consumers will be forced to be explicit when requesting reset lines. The choice will be to either the call the *_exclusive or *_shared variant depending on whether they can actually tolorate not being asserted when that request is made. The new API will look like this once reorded and complete: reset_control_get_exclusive() reset_control_get_shared() reset_control_get_optional_exclusive() reset_control_get_optional_shared() of_reset_control_get_exclusive() of_reset_control_get_shared() of_reset_control_get_exclusive_by_index() of_reset_control_get_shared_by_index() devm_reset_control_get_exclusive() devm_reset_control_get_shared() devm_reset_control_get_optional_exclusive() devm_reset_control_get_optional_shared() devm_reset_control_get_exclusive_by_index() devm_reset_control_get_shared_by_index() Signed-off-by: Lee Jones Signed-off-by: Philipp Zabel --- include/linux/reset.h | 42 +++++++++++++++++++++--------------------- 1 file changed, 21 insertions(+), 21 deletions(-) diff --git a/include/linux/reset.h b/include/linux/reset.h index ec0306ce7b92..33eaf11dabe2 100644 --- a/include/linux/reset.h +++ b/include/linux/reset.h @@ -107,12 +107,6 @@ static inline struct reset_control *__must_check reset_control_get( return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 0); } -static inline struct reset_control *reset_control_get_optional( - struct device *dev, const char *id) -{ - return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 0); -} - /** * reset_control_get_shared - Lookup and obtain a shared reference to a * reset controller. @@ -141,6 +135,12 @@ static inline struct reset_control *reset_control_get_shared( return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 1); } +static inline struct reset_control *reset_control_get_optional( + struct device *dev, const char *id) +{ + return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 0); +} + /** * of_reset_control_get - Lookup and obtain an exclusive reference to a * reset controller. @@ -191,6 +191,21 @@ static inline struct reset_control *__must_check devm_reset_control_get( return __devm_reset_control_get(dev, id, 0, 0); } +/** + * devm_reset_control_get_shared - resource managed reset_control_get_shared() + * @dev: device to be reset by the controller + * @id: reset line name + * + * Managed reset_control_get_shared(). For reset controllers returned from + * this function, reset_control_put() is called automatically on driver detach. + * See reset_control_get_shared() for more information. + */ +static inline struct reset_control *devm_reset_control_get_shared( + struct device *dev, const char *id) +{ + return __devm_reset_control_get(dev, id, 0, 1); +} + static inline struct reset_control *devm_reset_control_get_optional( struct device *dev, const char *id) { @@ -212,21 +227,6 @@ static inline struct reset_control *devm_reset_control_get_by_index( return __devm_reset_control_get(dev, NULL, index, 0); } -/** - * devm_reset_control_get_shared - resource managed reset_control_get_shared() - * @dev: device to be reset by the controller - * @id: reset line name - * - * Managed reset_control_get_shared(). For reset controllers returned from - * this function, reset_control_put() is called automatically on driver detach. - * See reset_control_get_shared() for more information. - */ -static inline struct reset_control *devm_reset_control_get_shared( - struct device *dev, const char *id) -{ - return __devm_reset_control_get(dev, id, 0, 1); -} - /** * devm_reset_control_get_shared_by_index - resource managed * reset_control_get_shared -- cgit v1.2.3 From a53e35db70d1638002e40d495d096181dbb0fe16 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 6 Jun 2016 16:56:50 +0100 Subject: reset: Ensure drivers are explicit when requesting reset lines Phasing out generic reset line requests enables us to make some better decisions on when and how to (de)assert said lines. If an 'exclusive' line is requested, we know a device *requires* a reset and that it's preferable to act upon a request right away. However, if a 'shared' reset line is requested, we can reasonably assume sure that placing a device into reset isn't a hard requirement, but probably a measure to save power and is thus able to cope with not being asserted if another device is still in use. In order allow gentle adoption and not to forcing all consumers to move to the API immediately, causing administration headache between subsystems, this patch adds some temporary stand-in shim-calls. This will ease the burden at merge time and allow subsystems to migrate over to the new API in a more realistic time-frame. Signed-off-by: Lee Jones Signed-off-by: Philipp Zabel --- include/linux/reset.h | 106 ++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 82 insertions(+), 24 deletions(-) diff --git a/include/linux/reset.h b/include/linux/reset.h index 33eaf11dabe2..9cf4cf39bf1d 100644 --- a/include/linux/reset.h +++ b/include/linux/reset.h @@ -84,8 +84,8 @@ static inline struct reset_control *__devm_reset_control_get( #endif /* CONFIG_RESET_CONTROLLER */ /** - * reset_control_get - Lookup and obtain an exclusive reference to a - * reset controller. + * reset_control_get_exclusive - Lookup and obtain an exclusive reference + * to a reset controller. * @dev: device to be reset by the controller * @id: reset line name * @@ -98,8 +98,8 @@ static inline struct reset_control *__devm_reset_control_get( * * Use of id names is optional. */ -static inline struct reset_control *__must_check reset_control_get( - struct device *dev, const char *id) +static inline struct reset_control * +__must_check reset_control_get_exclusive(struct device *dev, const char *id) { #ifndef CONFIG_RESET_CONTROLLER WARN_ON(1); @@ -135,15 +135,15 @@ static inline struct reset_control *reset_control_get_shared( return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 1); } -static inline struct reset_control *reset_control_get_optional( +static inline struct reset_control *reset_control_get_optional_exclusive( struct device *dev, const char *id) { return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 0); } /** - * of_reset_control_get - Lookup and obtain an exclusive reference to a - * reset controller. + * of_reset_control_get_exclusive - Lookup and obtain an exclusive reference + * to a reset controller. * @node: device to be reset by the controller * @id: reset line name * @@ -151,15 +151,16 @@ static inline struct reset_control *reset_control_get_optional( * * Use of id names is optional. */ -static inline struct reset_control *of_reset_control_get( +static inline struct reset_control *of_reset_control_get_exclusive( struct device_node *node, const char *id) { return __of_reset_control_get(node, id, 0, 0); } /** - * of_reset_control_get_by_index - Lookup and obtain an exclusive reference to - * a reset controller by index. + * of_reset_control_get_exclusive_by_index - Lookup and obtain an exclusive + * reference to a reset controller + * by index. * @node: device to be reset by the controller * @index: index of the reset controller * @@ -167,23 +168,27 @@ static inline struct reset_control *of_reset_control_get( * in whatever order. Returns a struct reset_control or IS_ERR() condition * containing errno. */ -static inline struct reset_control *of_reset_control_get_by_index( +static inline struct reset_control *of_reset_control_get_exclusive_by_index( struct device_node *node, int index) { return __of_reset_control_get(node, NULL, index, 0); } /** - * devm_reset_control_get - resource managed reset_control_get() + * devm_reset_control_get_exclusive - resource managed + * reset_control_get_exclusive() * @dev: device to be reset by the controller * @id: reset line name * - * Managed reset_control_get(). For reset controllers returned from this - * function, reset_control_put() is called automatically on driver detach. - * See reset_control_get() for more information. + * Managed reset_control_get_exclusive(). For reset controllers returned + * from this function, reset_control_put() is called automatically on driver + * detach. + * + * See reset_control_get_exclusive() for more information. */ -static inline struct reset_control *__must_check devm_reset_control_get( - struct device *dev, const char *id) +static inline struct reset_control * +__must_check devm_reset_control_get_exclusive(struct device *dev, + const char *id) { #ifndef CONFIG_RESET_CONTROLLER WARN_ON(1); @@ -206,23 +211,26 @@ static inline struct reset_control *devm_reset_control_get_shared( return __devm_reset_control_get(dev, id, 0, 1); } -static inline struct reset_control *devm_reset_control_get_optional( +static inline struct reset_control *devm_reset_control_get_optional_exclusive( struct device *dev, const char *id) { return __devm_reset_control_get(dev, id, 0, 0); } /** - * devm_reset_control_get_by_index - resource managed reset_control_get + * devm_reset_control_get_exclusive_by_index - resource managed + * reset_control_get_exclusive() * @dev: device to be reset by the controller * @index: index of the reset controller * - * Managed reset_control_get(). For reset controllers returned from this - * function, reset_control_put() is called automatically on driver detach. - * See reset_control_get() for more information. + * Managed reset_control_get_exclusive(). For reset controllers returned from + * this function, reset_control_put() is called automatically on driver + * detach. + * + * See reset_control_get_exclusive() for more information. */ -static inline struct reset_control *devm_reset_control_get_by_index( - struct device *dev, int index) +static inline struct reset_control * +devm_reset_control_get_exclusive_by_index(struct device *dev, int index) { return __devm_reset_control_get(dev, NULL, index, 0); } @@ -243,4 +251,54 @@ static inline struct reset_control *devm_reset_control_get_shared_by_index( return __devm_reset_control_get(dev, NULL, index, 1); } +/* + * TEMPORARY calls to use during transition: + * + * of_reset_control_get() => of_reset_control_get_exclusive() + * + * These inline function calls will be removed once all consumers + * have been moved over to the new explicit API. + */ +static inline struct reset_control *reset_control_get( + struct device *dev, const char *id) +{ + return reset_control_get_exclusive(dev, id); +} + +static inline struct reset_control *reset_control_get_optional( + struct device *dev, const char *id) +{ + return reset_control_get_optional_exclusive(dev, id); +} + +static inline struct reset_control *of_reset_control_get( + struct device_node *node, const char *id) +{ + return of_reset_control_get_exclusive(node, id); +} + +static inline struct reset_control *of_reset_control_get_by_index( + struct device_node *node, int index) +{ + return of_reset_control_get_exclusive_by_index(node, index); +} + +static inline struct reset_control *devm_reset_control_get( + struct device *dev, const char *id) +{ + return devm_reset_control_get_exclusive(dev, id); +} + +static inline struct reset_control *devm_reset_control_get_optional( + struct device *dev, const char *id) +{ + return devm_reset_control_get_optional_exclusive(dev, id); + +} + +static inline struct reset_control *devm_reset_control_get_by_index( + struct device *dev, int index) +{ + return devm_reset_control_get_exclusive_by_index(dev, index); +} #endif -- cgit v1.2.3 From 40faee8ee471ae526344cd5c62ff520d356de841 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 6 Jun 2016 16:56:51 +0100 Subject: reset: Supply *_shared variant calls when using of_* API Consumers need to be able to specify whether they are requesting an 'exclusive' or 'shared' reset line no matter which API (of_*, devm_*, etc) they are using. This change allows users of the of_* API in particular to specify that their request is for a 'shared' line. Signed-off-by: Lee Jones Signed-off-by: Philipp Zabel --- include/linux/reset.h | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/include/linux/reset.h b/include/linux/reset.h index 9cf4cf39bf1d..fd69240907c8 100644 --- a/include/linux/reset.h +++ b/include/linux/reset.h @@ -157,6 +157,31 @@ static inline struct reset_control *of_reset_control_get_exclusive( return __of_reset_control_get(node, id, 0, 0); } +/** + * of_reset_control_get_shared - Lookup and obtain an shared reference + * to a reset controller. + * @node: device to be reset by the controller + * @id: reset line name + * + * When a reset-control is shared, the behavior of reset_control_assert / + * deassert is changed, the reset-core will keep track of a deassert_count + * and only (re-)assert the reset after reset_control_assert has been called + * as many times as reset_control_deassert was called. Also see the remark + * about shared reset-controls in the reset_control_assert docs. + * + * Calling reset_control_assert without first calling reset_control_deassert + * is not allowed on a shared reset control. Calling reset_control_reset is + * also not allowed on a shared reset control. + * Returns a struct reset_control or IS_ERR() condition containing errno. + * + * Use of id names is optional. + */ +static inline struct reset_control *of_reset_control_get_shared( + struct device_node *node, const char *id) +{ + return __of_reset_control_get(node, id, 0, 1); +} + /** * of_reset_control_get_exclusive_by_index - Lookup and obtain an exclusive * reference to a reset controller @@ -174,6 +199,34 @@ static inline struct reset_control *of_reset_control_get_exclusive_by_index( return __of_reset_control_get(node, NULL, index, 0); } +/** + * of_reset_control_get_shared_by_index - Lookup and obtain an shared + * reference to a reset controller + * by index. + * @node: device to be reset by the controller + * @index: index of the reset controller + * + * When a reset-control is shared, the behavior of reset_control_assert / + * deassert is changed, the reset-core will keep track of a deassert_count + * and only (re-)assert the reset after reset_control_assert has been called + * as many times as reset_control_deassert was called. Also see the remark + * about shared reset-controls in the reset_control_assert docs. + * + * Calling reset_control_assert without first calling reset_control_deassert + * is not allowed on a shared reset control. Calling reset_control_reset is + * also not allowed on a shared reset control. + * Returns a struct reset_control or IS_ERR() condition containing errno. + * + * This is to be used to perform a list of resets for a device or power domain + * in whatever order. Returns a struct reset_control or IS_ERR() condition + * containing errno. + */ +static inline struct reset_control *of_reset_control_get_shared_by_index( + struct device_node *node, int index) +{ + return __of_reset_control_get(node, NULL, index, 1); +} + /** * devm_reset_control_get_exclusive - resource managed * reset_control_get_exclusive() -- cgit v1.2.3 From c33d61a0c400c50f378ef03a386e646abca292ca Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 6 Jun 2016 16:56:52 +0100 Subject: reset: Supply *_shared variant calls when using *_optional APIs Consumers need to be able to specify whether they are requesting an 'exclusive' or 'shared' reset line no matter which API (of_*, devm_*, etc) they are using. This change allows users of the optional_* API in particular to specify that their request is for a 'shared' line. Signed-off-by: Lee Jones Signed-off-by: Philipp Zabel --- include/linux/reset.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/reset.h b/include/linux/reset.h index fd69240907c8..c358106611af 100644 --- a/include/linux/reset.h +++ b/include/linux/reset.h @@ -141,6 +141,12 @@ static inline struct reset_control *reset_control_get_optional_exclusive( return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 0); } +static inline struct reset_control *reset_control_get_optional_shared( + struct device *dev, const char *id) +{ + return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 1); +} + /** * of_reset_control_get_exclusive - Lookup and obtain an exclusive reference * to a reset controller. @@ -270,6 +276,12 @@ static inline struct reset_control *devm_reset_control_get_optional_exclusive( return __devm_reset_control_get(dev, id, 0, 0); } +static inline struct reset_control *devm_reset_control_get_optional_shared( + struct device *dev, const char *id) +{ + return __devm_reset_control_get(dev, id, 0, 1); +} + /** * devm_reset_control_get_exclusive_by_index - resource managed * reset_control_get_exclusive() -- cgit v1.2.3 From 0bcc0eab363aa80f79769324bf3f2ab7781840f2 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 6 Jun 2016 16:56:53 +0100 Subject: reset: TRIVIAL: Add line break at same place for similar APIs Standardise the way inline functions: devm_reset_control_get_shared_by_index devm_reset_control_get_exclusive_by_index ... are formatted. Signed-off-by: Lee Jones Signed-off-by: Philipp Zabel --- include/linux/reset.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/reset.h b/include/linux/reset.h index c358106611af..45a4abeb6acb 100644 --- a/include/linux/reset.h +++ b/include/linux/reset.h @@ -310,8 +310,8 @@ devm_reset_control_get_exclusive_by_index(struct device *dev, int index) * this function, reset_control_put() is called automatically on driver detach. * See reset_control_get_shared() for more information. */ -static inline struct reset_control *devm_reset_control_get_shared_by_index( - struct device *dev, int index) +static inline struct reset_control * +devm_reset_control_get_shared_by_index(struct device *dev, int index) { return __devm_reset_control_get(dev, NULL, index, 1); } -- cgit v1.2.3 From f5ee3f2b5ad6881a8194b9f684ce11640d1062f7 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 6 Jun 2016 18:08:54 +0100 Subject: usb: host: ohci-st: Inform the reset framework that our reset line may be shared On the STiH410 B2120 development board the ST EHCI IP shares its reset line with the OHCI IP. New functionality in the reset subsystems forces consumers to be explicit when requesting shared/exclusive reset lines. Acked-by: Alan Stern Signed-off-by: Lee Jones --- drivers/usb/host/ohci-st.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/ohci-st.c b/drivers/usb/host/ohci-st.c index acf2eb2a5676..02816a1515a1 100644 --- a/drivers/usb/host/ohci-st.c +++ b/drivers/usb/host/ohci-st.c @@ -188,13 +188,15 @@ static int st_ohci_platform_probe(struct platform_device *dev) priv->clk48 = NULL; } - priv->pwr = devm_reset_control_get_optional(&dev->dev, "power"); + priv->pwr = + devm_reset_control_get_optional_shared(&dev->dev, "power"); if (IS_ERR(priv->pwr)) { err = PTR_ERR(priv->pwr); goto err_put_clks; } - priv->rst = devm_reset_control_get_optional(&dev->dev, "softreset"); + priv->rst = + devm_reset_control_get_optional_shared(&dev->dev, "softreset"); if (IS_ERR(priv->rst)) { err = PTR_ERR(priv->rst); goto err_put_clks; -- cgit v1.2.3 From 19599304625b74c95bff318c735928eec668b1ca Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 6 Jun 2016 18:08:53 +0100 Subject: usb: host: ehci-st: Inform the reset framework that our reset line may be shared On the STiH410 B2120 development board the ST EHCI IP shares its reset line with the OHCI IP. New functionality in the reset subsystems forces consumers to be explicit when requesting shared/exclusive reset lines. Acked-by: Peter Griffin Acked-by: Alan Stern Signed-off-by: Lee Jones --- drivers/usb/host/ehci-st.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/ehci-st.c b/drivers/usb/host/ehci-st.c index a94ed677d937..be4a2788fc58 100644 --- a/drivers/usb/host/ehci-st.c +++ b/drivers/usb/host/ehci-st.c @@ -206,7 +206,8 @@ static int st_ehci_platform_probe(struct platform_device *dev) priv->clk48 = NULL; } - priv->pwr = devm_reset_control_get_optional(&dev->dev, "power"); + priv->pwr = + devm_reset_control_get_optional_shared(&dev->dev, "power"); if (IS_ERR(priv->pwr)) { err = PTR_ERR(priv->pwr); if (err == -EPROBE_DEFER) @@ -214,7 +215,8 @@ static int st_ehci_platform_probe(struct platform_device *dev) priv->pwr = NULL; } - priv->rst = devm_reset_control_get_optional(&dev->dev, "softreset"); + priv->rst = + devm_reset_control_get_optional_shared(&dev->dev, "softreset"); if (IS_ERR(priv->rst)) { err = PTR_ERR(priv->rst); if (err == -EPROBE_DEFER) -- cgit v1.2.3 From 002f17bc54ff4005260d8e6e6700de97f5b25679 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Tue, 28 Jun 2016 09:23:58 +0100 Subject: usb: dwc3: st: Inform the reset framework that our reset line may be shared On the STiH410 B2120 development board the MiPHY28lp shares its reset line with the Synopsys DWC3 SuperSpeed (SS) USB 3.0 Dual-Role-Device (DRD). New functionality in the reset subsystems forces consumers to be explicit when requesting shared/exclusive reset lines. Acked-by: Felipe Balbi Signed-off-by: Lee Jones --- drivers/usb/dwc3/dwc3-st.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c index 5c0adb9c6fb2..b204617ea4e6 100644 --- a/drivers/usb/dwc3/dwc3-st.c +++ b/drivers/usb/dwc3/dwc3-st.c @@ -237,7 +237,8 @@ static int st_dwc3_probe(struct platform_device *pdev) /* Manage PowerDown */ reset_control_deassert(dwc3_data->rstc_pwrdn); - dwc3_data->rstc_rst = devm_reset_control_get(dev, "softreset"); + dwc3_data->rstc_rst = + devm_reset_control_get_shared(dev, "softreset"); if (IS_ERR(dwc3_data->rstc_rst)) { dev_err(&pdev->dev, "could not get reset controller\n"); ret = PTR_ERR(dwc3_data->rstc_rst); -- cgit v1.2.3 From 9278e707f4e187df2b4d9eeb2bc78a1724fbe4ac Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Tue, 28 Jun 2016 09:32:12 +0100 Subject: phy: phy-stih407-usb: Inform the reset framework that our reset line may be shared On the STiH410 B2120 development board the ports on the Generic PHY share their reset lines with each other. New functionality in the reset subsystems forces consumers to be explicit when requesting shared/exclusive reset lines. Signed-off-by: Lee Jones --- drivers/phy/phy-stih407-usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/phy/phy-stih407-usb.c b/drivers/phy/phy-stih407-usb.c index 1d5ae5f8ef69..53cf8d1b4116 100644 --- a/drivers/phy/phy-stih407-usb.c +++ b/drivers/phy/phy-stih407-usb.c @@ -105,7 +105,7 @@ static int stih407_usb2_picophy_probe(struct platform_device *pdev) phy_dev->dev = dev; dev_set_drvdata(dev, phy_dev); - phy_dev->rstc = devm_reset_control_get(dev, "global"); + phy_dev->rstc = devm_reset_control_get_shared(dev, "global"); if (IS_ERR(phy_dev->rstc)) { dev_err(dev, "failed to ctrl picoPHY reset\n"); return PTR_ERR(phy_dev->rstc); -- cgit v1.2.3 From 82d8eb40bab10082050be945c8e7096df8e9f989 Mon Sep 17 00:00:00 2001 From: Rhyland Klein Date: Thu, 12 May 2016 13:45:04 -0400 Subject: mfd: max77620: Fix FPS switch statements When configuring FPS during probe, assuming a DT node is present for FPS, the code can run into a problem with the switch statements in max77620_config_fps() and max77620_get_fps_period_reg_value(). Namely, in the case of chip->chip_id == MAX77620, it will set fps_[mix|max]_period but then fall through to the default switch case and return -EINVAL. Returning this from max77620_config_fps() will cause probe to fail. Signed-off-by: Rhyland Klein Reviewed-by: Laxman Dewangan Reviewed-by: Thierry Reding Tested-by: Thierry Reding Tested-by: Alexandre Courbot Signed-off-by: Lee Jones --- drivers/mfd/max77620.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mfd/max77620.c b/drivers/mfd/max77620.c index 199d261990be..f32fbb8e8129 100644 --- a/drivers/mfd/max77620.c +++ b/drivers/mfd/max77620.c @@ -203,6 +203,7 @@ static int max77620_get_fps_period_reg_value(struct max77620_chip *chip, break; case MAX77620: fps_min_period = MAX77620_FPS_PERIOD_MIN_US; + break; default: return -EINVAL; } @@ -236,6 +237,7 @@ static int max77620_config_fps(struct max77620_chip *chip, break; case MAX77620: fps_max_period = MAX77620_FPS_PERIOD_MAX_US; + break; default: return -EINVAL; } -- cgit v1.2.3 From ba4a1c28a92df55b9263e838068b92eaa80c7850 Mon Sep 17 00:00:00 2001 From: Steve Twiss Date: Mon, 27 Jun 2016 16:06:36 +0100 Subject: mfd: da9053: Fix compiler warning message for uninitialised variable Fix compiler warning caused by an uninitialised variable inside da9052_group_write() function. Defaulting the value to zero covers the trivial case. Signed-off-by: Steve Twiss Reported-by: Geert Uytterhoeven Signed-off-by: Lee Jones --- include/linux/mfd/da9052/da9052.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/mfd/da9052/da9052.h b/include/linux/mfd/da9052/da9052.h index c18a4c19d6fc..ce9230af09c2 100644 --- a/include/linux/mfd/da9052/da9052.h +++ b/include/linux/mfd/da9052/da9052.h @@ -171,7 +171,7 @@ static inline int da9052_group_read(struct da9052 *da9052, unsigned char reg, static inline int da9052_group_write(struct da9052 *da9052, unsigned char reg, unsigned reg_cnt, unsigned char *val) { - int ret; + int ret = 0; int i; for (i = 0; i < reg_cnt; i++) { -- cgit v1.2.3 From bfa37087aa04e45f56c41142dfceecb79b8e6ef9 Mon Sep 17 00:00:00 2001 From: Darren Stevens Date: Wed, 29 Jun 2016 21:06:28 +0100 Subject: powerpc: Initialise pci_io_base as early as possible Commit d6a9996e84ac ("powerpc/mm: vmalloc abstraction in preparation for radix") turned kernel memory and IO addresses from #defined constants to variables initialised at runtime. On PA6T (pasemi) systems the setup_arch() machine call initialises the onboard PCI-e root-ports, and uses pci_io_base to do this, which is now before its value has been set, resulting in a panic early in boot before console IO is initialised. Move the pci_io_base initialisation to the same place as vmalloc ranges are set (hash__early_init_mmu()/radix__early_init_mmu()) - this is the earliest possible place we can initialise it. Fixes: d6a9996e84ac ("powerpc/mm: vmalloc abstraction in preparation for radix") Reported-by: Christian Zigotzky Signed-off-by: Darren Stevens Reviewed-by: Aneesh Kumar K.V [mpe: Add #ifdef CONFIG_PCI, massage change log slightly] Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/book3s/64/pgtable.h | 1 + arch/powerpc/kernel/pci_64.c | 1 - arch/powerpc/mm/hash_utils_64.c | 4 ++++ arch/powerpc/mm/pgtable-radix.c | 5 +++++ 4 files changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 88a5ecaa157b..ab84c89c9e98 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -230,6 +230,7 @@ extern unsigned long __kernel_virt_size; #define KERN_VIRT_SIZE __kernel_virt_size extern struct page *vmemmap; extern unsigned long ioremap_bot; +extern unsigned long pci_io_base; #endif /* __ASSEMBLY__ */ #include diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c index 3759df52bd67..a5ae49a2dcc4 100644 --- a/arch/powerpc/kernel/pci_64.c +++ b/arch/powerpc/kernel/pci_64.c @@ -47,7 +47,6 @@ static int __init pcibios_init(void) printk(KERN_INFO "PCI: Probing PCI hardware\n"); - pci_io_base = ISA_IO_BASE; /* For now, override phys_mem_access_prot. If we need it,g * later, we may move that initialization to each ppc_md */ diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 5b22ba0b58bc..2971ea18c768 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -922,6 +922,10 @@ void __init hash__early_init_mmu(void) vmemmap = (struct page *)H_VMEMMAP_BASE; ioremap_bot = IOREMAP_BASE; +#ifdef CONFIG_PCI + pci_io_base = ISA_IO_BASE; +#endif + /* Initialize the MMU Hash table and create the linear mapping * of memory. Has to be done before SLB initialization as this is * currently where the page size encoding is obtained. diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c index e58707deef5c..7931e1496f0d 100644 --- a/arch/powerpc/mm/pgtable-radix.c +++ b/arch/powerpc/mm/pgtable-radix.c @@ -328,6 +328,11 @@ void __init radix__early_init_mmu(void) __vmalloc_end = RADIX_VMALLOC_END; vmemmap = (struct page *)RADIX_VMEMMAP_BASE; ioremap_bot = IOREMAP_BASE; + +#ifdef CONFIG_PCI + pci_io_base = ISA_IO_BASE; +#endif + /* * For now radix also use the same frag size */ -- cgit v1.2.3 From cab103274352721b77fc5923a631fc63350bef8e Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Mon, 13 Jun 2016 23:42:00 +0000 Subject: drm/i915: Fix missing unlock on error in i915_ppgtt_info() Add the missing unlock before return from function i915_ppgtt_info() in the error handling case. Fixes: 1d2ac403ae3b(drm: Protect dev->filelist with its own mutex) Signed-off-by: Wei Yongjun Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1465861320-26221-1-git-send-email-weiyj_lk@163.com (cherry picked from commit b0212486909de4f239ca9f20d032de1b1f2dc52e) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/i915_debugfs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 32690332d441..103546834b60 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2365,16 +2365,16 @@ static int i915_ppgtt_info(struct seq_file *m, void *data) task = get_pid_task(file->pid, PIDTYPE_PID); if (!task) { ret = -ESRCH; - goto out_put; + goto out_unlock; } seq_printf(m, "\nproc: %s\n", task->comm); put_task_struct(task); idr_for_each(&file_priv->context_idr, per_file_ctx, (void *)(unsigned long)m); } +out_unlock: mutex_unlock(&dev->filelist_mutex); -out_put: intel_runtime_pm_put(dev_priv); mutex_unlock(&dev->struct_mutex); -- cgit v1.2.3 From 54794580f5949253520265e46c903878ab222d84 Mon Sep 17 00:00:00 2001 From: Sinan Kaya Date: Wed, 29 Jun 2016 04:27:38 -0400 Subject: ACPI,PCI,IRQ: correct operator precedence The omitted parenthesis prevents the addition operation when acpi_penalize_isa_irq function is called. Fixes: 103544d86976 (ACPI,PCI,IRQ: reduce resource requirements) Signed-off-by: Sinan Kaya Signed-off-by: Rafael J. Wysocki --- drivers/acpi/pci_link.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index 8fc7323ed3e8..4ed4061813e6 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -839,7 +839,7 @@ void acpi_penalize_isa_irq(int irq, int active) { if ((irq >= 0) && (irq < ARRAY_SIZE(acpi_isa_irq_penalty))) acpi_isa_irq_penalty[irq] = acpi_irq_get_penalty(irq) + - active ? PIRQ_PENALTY_ISA_USED : PIRQ_PENALTY_PCI_USING; + (active ? PIRQ_PENALTY_ISA_USED : PIRQ_PENALTY_PCI_USING); } bool acpi_isa_irq_available(int irq) -- cgit v1.2.3 From cb7d224f82e41d82518e7f9ea271d215d4d08e6e Mon Sep 17 00:00:00 2001 From: Scott Mayhew Date: Thu, 30 Jun 2016 10:39:32 -0400 Subject: lockd: unregister notifier blocks if the service fails to come up completely If the lockd service fails to start up then we need to be sure that the notifier blocks are not registered, otherwise a subsequent start of the service could cause the same notifier to be registered twice, leading to soft lockups. Signed-off-by: Scott Mayhew Cc: stable@vger.kernel.org Fixes: 0751ddf77b6a "lockd: Register callbacks on the inetaddr_chain..." Signed-off-by: J. Bruce Fields --- fs/lockd/svc.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index 154a107cd376..fc4084ef4736 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -335,12 +335,17 @@ static struct notifier_block lockd_inet6addr_notifier = { }; #endif -static void lockd_svc_exit_thread(void) +static void lockd_unregister_notifiers(void) { unregister_inetaddr_notifier(&lockd_inetaddr_notifier); #if IS_ENABLED(CONFIG_IPV6) unregister_inet6addr_notifier(&lockd_inet6addr_notifier); #endif +} + +static void lockd_svc_exit_thread(void) +{ + lockd_unregister_notifiers(); svc_exit_thread(nlmsvc_rqst); } @@ -462,7 +467,7 @@ int lockd_up(struct net *net) * Note: svc_serv structures have an initial use count of 1, * so we exit through here on both success and failure. */ -err_net: +err_put: svc_destroy(serv); err_create: mutex_unlock(&nlmsvc_mutex); @@ -470,7 +475,9 @@ err_create: err_start: lockd_down_net(serv, net); - goto err_net; +err_net: + lockd_unregister_notifiers(); + goto err_put; } EXPORT_SYMBOL_GPL(lockd_up); -- cgit v1.2.3 From b403f0e37a11f84f7ceaf40b0075499e5bcfd220 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Wed, 29 Jun 2016 10:54:23 +0200 Subject: 9p: use file_dentry() v9fs may be used as lower layer of overlayfs and accessing f_path.dentry can lead to a crash. In this case it's a NULL pointer dereference in p9_fid_create(). Fix by replacing direct access of file->f_path.dentry with the file_dentry() accessor, which will always return a native object. Reported-by: Alessio Igor Bogani Signed-off-by: Miklos Szeredi Tested-by: Alessio Igor Bogani Fixes: 4bacc9c9234c ("overlayfs: Make f_path always point to the overlay and f_inode to the underlay") Cc: Signed-off-by: Al Viro --- fs/9p/vfs_file.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index b84c291ba1eb..d7b78d531e63 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -74,7 +74,7 @@ int v9fs_file_open(struct inode *inode, struct file *file) v9fs_proto_dotu(v9ses)); fid = file->private_data; if (!fid) { - fid = v9fs_fid_clone(file->f_path.dentry); + fid = v9fs_fid_clone(file_dentry(file)); if (IS_ERR(fid)) return PTR_ERR(fid); @@ -100,7 +100,7 @@ int v9fs_file_open(struct inode *inode, struct file *file) * because we want write after unlink usecase * to work. */ - fid = v9fs_writeback_fid(file->f_path.dentry); + fid = v9fs_writeback_fid(file_dentry(file)); if (IS_ERR(fid)) { err = PTR_ERR(fid); mutex_unlock(&v9inode->v_mutex); @@ -516,7 +516,7 @@ v9fs_mmap_file_mmap(struct file *filp, struct vm_area_struct *vma) * because we want write after unlink usecase * to work. */ - fid = v9fs_writeback_fid(filp->f_path.dentry); + fid = v9fs_writeback_fid(file_dentry(filp)); if (IS_ERR(fid)) { retval = PTR_ERR(fid); mutex_unlock(&v9inode->v_mutex); -- cgit v1.2.3 From e06b933e6ded42384164d28a2060b7f89243b895 Mon Sep 17 00:00:00 2001 From: Andrey Ulanov Date: Fri, 15 Apr 2016 14:24:41 -0700 Subject: namespace: update event counter when umounting a deleted dentry - m_start() in fs/namespace.c expects that ns->event is incremented each time a mount added or removed from ns->list. - umount_tree() removes items from the list but does not increment event counter, expecting that it's done before the function is called. - There are some codepaths that call umount_tree() without updating "event" counter. e.g. from __detach_mounts(). - When this happens m_start may reuse a cached mount structure that no longer belongs to ns->list (i.e. use after free which usually leads to infinite loop). This change fixes the above problem by incrementing global event counter before invoking umount_tree(). Change-Id: I622c8e84dcb9fb63542372c5dbf0178ee86bb589 Cc: stable@vger.kernel.org Signed-off-by: Andrey Ulanov Signed-off-by: Al Viro --- fs/namespace.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/namespace.c b/fs/namespace.c index 4fb1691b4355..298618b88bba 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1562,6 +1562,7 @@ void __detach_mounts(struct dentry *dentry) goto out_unlock; lock_mount_hash(); + event++; while (!hlist_empty(&mp->m_list)) { mnt = hlist_entry(mp->m_list.first, struct mount, mnt_mp_list); if (mnt->mnt.mnt_flags & MNT_UMOUNT) { -- cgit v1.2.3 From 8293c8a3bb068bd2d2dfe00b6b0000a8fc5c860a Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Fri, 3 Jun 2016 11:44:28 +0100 Subject: phy: miphy28lp: Inform the reset framework that our reset line may be shared On the STiH410 B2120 development board the MiPHY28lp shares its reset line with the Synopsys DWC3 SuperSpeed (SS) USB 3.0 Dual-Role-Device (DRD). New functionality in the reset subsystems forces consumers to be explicit when requesting shared/exclusive reset lines. Acked-by: Kishon Vijay Abraham I Signed-off-by: Lee Jones --- drivers/phy/phy-miphy28lp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/phy/phy-miphy28lp.c b/drivers/phy/phy-miphy28lp.c index 3acd2a1808df..213e2e15339c 100644 --- a/drivers/phy/phy-miphy28lp.c +++ b/drivers/phy/phy-miphy28lp.c @@ -1143,7 +1143,8 @@ static int miphy28lp_probe_resets(struct device_node *node, struct miphy28lp_dev *miphy_dev = miphy_phy->phydev; int err; - miphy_phy->miphy_rst = of_reset_control_get(node, "miphy-sw-rst"); + miphy_phy->miphy_rst = + of_reset_control_get_shared(node, "miphy-sw-rst"); if (IS_ERR(miphy_phy->miphy_rst)) { dev_err(miphy_dev->dev, -- cgit v1.2.3 From f5f35830fb84364a24794fe6c7101f85318481d2 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Tue, 28 Jun 2016 09:33:55 +0100 Subject: phy: phy-stih407-usb: Use explicit reset_control_get_exclusive() API We're making all reset line users specify whether their lines are shared with other IP or they operate them exclusively. In this case the line is exclusively used only by this IP, so use the *_exclusive() API accordingly. Acked-by: Kishon Vijay Abraham I Signed-off-by: Lee Jones --- drivers/phy/phy-stih407-usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/phy/phy-stih407-usb.c b/drivers/phy/phy-stih407-usb.c index 53cf8d1b4116..b1f44ab669fb 100644 --- a/drivers/phy/phy-stih407-usb.c +++ b/drivers/phy/phy-stih407-usb.c @@ -111,7 +111,7 @@ static int stih407_usb2_picophy_probe(struct platform_device *pdev) return PTR_ERR(phy_dev->rstc); } - phy_dev->rstport = devm_reset_control_get(dev, "port"); + phy_dev->rstport = devm_reset_control_get_exclusive(dev, "port"); if (IS_ERR(phy_dev->rstport)) { dev_err(dev, "failed to ctrl picoPHY reset\n"); return PTR_ERR(phy_dev->rstport); -- cgit v1.2.3 From 5baaf3b9efe127d239038de9219d381f4d882b26 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Tue, 28 Jun 2016 09:24:40 +0100 Subject: usb: dwc3: st: Use explicit reset_control_get_exclusive() API We're making all reset line users specify whether their lines are shared with other IP or they operate them exclusively. In this case the line is exclusively used only by this IP, so use the *_exclusive() API accordingly. Acked-by: Felipe Balbi Signed-off-by: Lee Jones --- drivers/usb/dwc3/dwc3-st.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c index b204617ea4e6..e77bacb8358a 100644 --- a/drivers/usb/dwc3/dwc3-st.c +++ b/drivers/usb/dwc3/dwc3-st.c @@ -227,7 +227,8 @@ static int st_dwc3_probe(struct platform_device *pdev) dev_vdbg(&pdev->dev, "glue-logic addr 0x%p, syscfg-reg offset 0x%x\n", dwc3_data->glue_base, dwc3_data->syscfg_reg_off); - dwc3_data->rstc_pwrdn = devm_reset_control_get(dev, "powerdown"); + dwc3_data->rstc_pwrdn = + devm_reset_control_get_exclusive(dev, "powerdown"); if (IS_ERR(dwc3_data->rstc_pwrdn)) { dev_err(&pdev->dev, "could not get power controller\n"); ret = PTR_ERR(dwc3_data->rstc_pwrdn); -- cgit v1.2.3 From 6343a2120862f7023006c8091ad95c1f16a32077 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 1 Jul 2016 14:56:07 +0200 Subject: locks: use file_inode() (Another one for the f_path debacle.) ltp fcntl33 testcase caused an Oops in selinux_file_send_sigiotask. The reason is that generic_add_lease() used filp->f_path.dentry->inode while all the others use file_inode(). This makes a difference for files opened on overlayfs since the former will point to the overlay inode the latter to the underlying inode. So generic_add_lease() added the lease to the overlay inode and generic_delete_lease() removed it from the underlying inode. When the file was released the lease remained on the overlay inode's lock list, resulting in use after free. Reported-by: Eryu Guan Fixes: 4bacc9c9234c ("overlayfs: Make f_path always point to the overlay and f_inode to the underlay") Cc: Signed-off-by: Miklos Szeredi Reviewed-by: Jeff Layton Signed-off-by: J. Bruce Fields --- fs/locks.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/locks.c b/fs/locks.c index 7c5f91be9b65..ee1b15f6fc13 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1628,7 +1628,7 @@ generic_add_lease(struct file *filp, long arg, struct file_lock **flp, void **pr { struct file_lock *fl, *my_fl = NULL, *lease; struct dentry *dentry = filp->f_path.dentry; - struct inode *inode = dentry->d_inode; + struct inode *inode = file_inode(filp); struct file_lock_context *ctx; bool is_deleg = (*flp)->fl_flags & FL_DELEG; int error; -- cgit v1.2.3 From 6d037de90a1fd7b4879b48d4dd5c4839b271be98 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Fri, 1 Jul 2016 15:01:01 +0200 Subject: MIPS: Fix possible corruption of cache mode by mprotect. The following testcase may result in a page table entries with a invalid CCA field being generated: static void *bindstack; static int sysrqfd; static void protect_low(int protect) { mprotect(bindstack, BINDSTACK_SIZE, protect); } static void sigbus_handler(int signal, siginfo_t * info, void *context) { void *addr = info->si_addr; write(sysrqfd, "x", 1); printf("sigbus, fault address %p (should not happen, but might)\n", addr); abort(); } static void run_bind_test(void) { unsigned int *p = bindstack; p[0] = 0xf001f001; write(sysrqfd, "x", 1); /* Set trap on access to p[0] */ protect_low(PROT_NONE); write(sysrqfd, "x", 1); /* Clear trap on access to p[0] */ protect_low(PROT_READ | PROT_WRITE | PROT_EXEC); write(sysrqfd, "x", 1); /* Check the contents of p[0] */ if (p[0] != 0xf001f001) { write(sysrqfd, "x", 1); /* Reached, but shouldn't be */ printf("badness, shouldn't happen but does\n"); abort(); } } int main(void) { struct sigaction sa; sysrqfd = open("/proc/sysrq-trigger", O_WRONLY); if (sigprocmask(SIG_BLOCK, NULL, &sa.sa_mask)) { perror("sigprocmask"); return 0; } sa.sa_sigaction = sigbus_handler; sa.sa_flags = SA_SIGINFO | SA_NODEFER | SA_RESTART; if (sigaction(SIGBUS, &sa, NULL)) { perror("sigaction"); return 0; } bindstack = mmap(NULL, BINDSTACK_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); if (bindstack == MAP_FAILED) { perror("mmap bindstack"); return 0; } printf("bindstack: %p\n", bindstack); run_bind_test(); printf("done\n"); return 0; } There are multiple ingredients for this: 1) PAGE_NONE is defined to _CACHE_CACHABLE_NONCOHERENT, which is CCA 3 on all platforms except SB1 where it's CCA 5. 2) _page_cachable_default must have bits set which are not set _CACHE_CACHABLE_NONCOHERENT. 3) Either the defective version of pte_modify for XPA or the standard version must be in used. However pte_modify for the 36 bit address space support is no affected. In that case additional bits in the final CCA mode may generate an invalid value for the CCA field. On the R10000 system where this was tracked down for example a CCA 7 has been observed, which is Uncached Accelerated. Fixed by: 1) Using the proper CCA mode for PAGE_NONE just like for all the other PAGE_* pte/pmd bits. 2) Fix the two affected variants of pte_modify. Further code inspection also shows the same issue to exist in pmd_modify which would affect huge page systems. Issue in pte_modify tracked down by Alastair Bridgewater, PAGE_NONE and pmd_modify issue found by me. The history of this goes back beyond Linus' git history. Chris Dearman's commit 351336929ccf222ae38ff0cb7a8dd5fd5c6236a0 ("[MIPS] Allow setting of the cache attribute at run time.") missed the opportunity to fix this but it was originally introduced in lmo commit d523832cf12007b3242e50bb77d0c9e63e0b6518 ("Missing from last commit.") and 32cc38229ac7538f2346918a09e75413e8861f87 ("New configuration option CONFIG_MIPS_UNCACHED.") Signed-off-by: Ralf Baechle Reported-by: Alastair Bridgewater --- arch/mips/include/asm/pgtable.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h index a6b611f1da43..f53816744d60 100644 --- a/arch/mips/include/asm/pgtable.h +++ b/arch/mips/include/asm/pgtable.h @@ -24,7 +24,7 @@ struct mm_struct; struct vm_area_struct; #define PAGE_NONE __pgprot(_PAGE_PRESENT | _PAGE_NO_READ | \ - _CACHE_CACHABLE_NONCOHERENT) + _page_cachable_default) #define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_WRITE | \ _page_cachable_default) #define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_NO_EXEC | \ @@ -476,7 +476,7 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) pte.pte_low &= (_PAGE_MODIFIED | _PAGE_ACCESSED | _PFNX_MASK); pte.pte_high &= (_PFN_MASK | _CACHE_MASK); pte.pte_low |= pgprot_val(newprot) & ~_PFNX_MASK; - pte.pte_high |= pgprot_val(newprot) & ~_PFN_MASK; + pte.pte_high |= pgprot_val(newprot) & ~(_PFN_MASK | _CACHE_MASK); return pte; } #elif defined(CONFIG_PHYS_ADDR_T_64BIT) && defined(CONFIG_CPU_MIPS32) @@ -491,7 +491,8 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) #else static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) { - return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot)); + return __pte((pte_val(pte) & _PAGE_CHG_MASK) | + (pgprot_val(newprot) & ~_PAGE_CHG_MASK)); } #endif @@ -632,7 +633,8 @@ static inline struct page *pmd_page(pmd_t pmd) static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot) { - pmd_val(pmd) = (pmd_val(pmd) & _PAGE_CHG_MASK) | pgprot_val(newprot); + pmd_val(pmd) = (pmd_val(pmd) & _PAGE_CHG_MASK) | + (pgprot_val(newprot) & ~_PAGE_CHG_MASK); return pmd; } -- cgit v1.2.3 From 9010ae4a8dee29e5886e86682799dde0eee7f447 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Fri, 1 Jul 2016 15:22:22 -0700 Subject: perf/x86/intel: Update event constraints when HT is off This patch updates the event constraints for non-PEBS mode for Intel Broadwell and Skylake processors. When HT is off, each CPU gets 8 generic counters. However, not all events can be programmed on any of the 8 counters. This patch adds the constraints for the MEM_* events which can only be measured on the bottom 4 counters. The constraints are also valid when HT is off because, then, there are only 4 generic counters and they are the bottom counters. Signed-off-by: Stephane Eranian Cc: Alexander Shishkin Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Vince Weaver Cc: kan.liang@intel.com Link: http://lkml.kernel.org/r/1467411742-13245-1-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar --- arch/x86/events/intel/core.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index 7c666958a625..9b4f9d3ce465 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -115,6 +115,10 @@ static struct event_constraint intel_snb_event_constraints[] __read_mostly = INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */ INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */ + /* + * When HT is off these events can only run on the bottom 4 counters + * When HT is on, they are impacted by the HT bug and require EXCL access + */ INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */ INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */ INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */ @@ -139,6 +143,10 @@ static struct event_constraint intel_ivb_event_constraints[] __read_mostly = INTEL_UEVENT_CONSTRAINT(0x0ca3, 0x4), /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */ INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */ + /* + * When HT is off these events can only run on the bottom 4 counters + * When HT is on, they are impacted by the HT bug and require EXCL access + */ INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */ INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */ INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */ @@ -182,6 +190,16 @@ struct event_constraint intel_skl_event_constraints[] = { FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */ FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */ INTEL_UEVENT_CONSTRAINT(0x1c0, 0x2), /* INST_RETIRED.PREC_DIST */ + + /* + * when HT is off, these can only run on the bottom 4 counters + */ + INTEL_EVENT_CONSTRAINT(0xd0, 0xf), /* MEM_INST_RETIRED.* */ + INTEL_EVENT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_RETIRED.* */ + INTEL_EVENT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_L3_HIT_RETIRED.* */ + INTEL_EVENT_CONSTRAINT(0xcd, 0xf), /* MEM_TRANS_RETIRED.* */ + INTEL_EVENT_CONSTRAINT(0xc6, 0xf), /* FRONTEND_RETIRED.* */ + EVENT_CONSTRAINT_END }; @@ -250,6 +268,10 @@ static struct event_constraint intel_hsw_event_constraints[] = { /* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */ INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), + /* + * When HT is off these events can only run on the bottom 4 counters + * When HT is on, they are impacted by the HT bug and require EXCL access + */ INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */ INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */ INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */ @@ -264,6 +286,13 @@ struct event_constraint intel_bdw_event_constraints[] = { FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */ INTEL_UEVENT_CONSTRAINT(0x148, 0x4), /* L1D_PEND_MISS.PENDING */ INTEL_UBIT_EVENT_CONSTRAINT(0x8a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_MISS */ + /* + * when HT is off, these can only run on the bottom 4 counters + */ + INTEL_EVENT_CONSTRAINT(0xd0, 0xf), /* MEM_INST_RETIRED.* */ + INTEL_EVENT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_RETIRED.* */ + INTEL_EVENT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_L3_HIT_RETIRED.* */ + INTEL_EVENT_CONSTRAINT(0xcd, 0xf), /* MEM_TRANS_RETIRED.* */ EVENT_CONSTRAINT_END }; -- cgit v1.2.3 From fc18822510721fe694d273c5211c71ea52796d76 Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf Date: Fri, 1 Jul 2016 23:02:05 -0500 Subject: perf/x86: Fix 32-bit perf user callgraph collection A basic perf callgraph record operation causes an immediate panic on a 32-bit kernel compiled with CONFIG_CC_STACKPROTECTOR=y: $ perf record -g ls Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: c0404fbd CPU: 0 PID: 998 Comm: ls Not tainted 4.7.0-rc5+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-1.fc24 04/01/2014 c0dd5967 ff7afe1c 00000086 f41dbc2c c07445a0 464c457f f41dbca8 f41dbc44 c05646f4 f41dbca8 464c457f f41dbca8 464c457f f41dbc54 c04625be c0ce56fc c0404fbd f41dbc88 c0404fbd b74668f0 f41dc000 00000000 c0000000 00000000 Call Trace: [] dump_stack+0x58/0x78 [] panic+0x8e/0x1c6 [] __stack_chk_fail+0x1e/0x30 [] ? perf_callchain_user+0x22d/0x230 [] perf_callchain_user+0x22d/0x230 [] get_perf_callchain+0x1ff/0x270 [] perf_callchain+0x78/0x90 [] perf_prepare_sample+0x24b/0x370 [] perf_event_output_forward+0x24/0x70 [] __perf_event_overflow+0xa0/0x210 [] ? cpu_clock_event_read+0x43/0x50 [] perf_swevent_hrtimer+0x101/0x180 [] ? kmap_atomic_prot+0x35/0x140 [] ? get_page_from_freelist+0x279/0x950 [] ? vma_interval_tree_remove+0x158/0x230 [] ? wp_page_copy.isra.82+0x2f4/0x630 [] ? page_add_file_rmap+0x1d/0x50 [] ? unlock_page+0x61/0x80 [] ? filemap_map_pages+0x305/0x320 [] ? handle_mm_fault+0xb7f/0x1560 [] ? timerqueue_del+0x1b/0x70 [] ? __remove_hrtimer+0x2e/0x60 [] __hrtimer_run_queues+0xcb/0x2a0 [] ? __perf_event_overflow+0x210/0x210 [] hrtimer_interrupt+0x8a/0x180 [] local_apic_timer_interrupt+0x32/0x60 [] smp_apic_timer_interrupt+0x33/0x50 [] apic_timer_interrupt+0x34/0x3c Kernel Offset: disabled ---[ end Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: c0404fbd The panic is caused by the fact that perf_callchain_user() mistakenly assumes it's 64-bit only and ends up corrupting the stack. Signed-off-by: Josh Poimboeuf Cc: Alexander Shishkin Cc: Arnaldo Carvalho de Melo Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Cc: stable@vger.kernel.org # v4.5+ Fixes: 75925e1ad7f5 ("perf/x86: Optimize stack walk user accesses") Link: http://lkml.kernel.org/r/1a547f5077ec30f75f9b57074837c3c80df86e5e.1467432113.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar --- arch/x86/events/core.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index 33787ee817f0..26ced536005a 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -2319,7 +2319,7 @@ void perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { struct stack_frame frame; - const void __user *fp; + const unsigned long __user *fp; if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) { /* TODO: We don't support guest os callchain now */ @@ -2332,7 +2332,7 @@ perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs if (regs->flags & (X86_VM_MASK | PERF_EFLAGS_VM)) return; - fp = (void __user *)regs->bp; + fp = (unsigned long __user *)regs->bp; perf_callchain_store(entry, regs->ip); @@ -2345,16 +2345,17 @@ perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs pagefault_disable(); while (entry->nr < entry->max_stack) { unsigned long bytes; + frame.next_frame = NULL; frame.return_address = 0; - if (!access_ok(VERIFY_READ, fp, 16)) + if (!access_ok(VERIFY_READ, fp, sizeof(*fp) * 2)) break; - bytes = __copy_from_user_nmi(&frame.next_frame, fp, 8); + bytes = __copy_from_user_nmi(&frame.next_frame, fp, sizeof(*fp)); if (bytes != 0) break; - bytes = __copy_from_user_nmi(&frame.return_address, fp+8, 8); + bytes = __copy_from_user_nmi(&frame.return_address, fp + 1, sizeof(*fp)); if (bytes != 0) break; -- cgit v1.2.3 From 175a20c16fdb7700fcac63f1eeb2caa7e1dddd2d Mon Sep 17 00:00:00 2001 From: Ville Syrjälä Date: Thu, 23 Jun 2016 18:06:49 +0300 Subject: x86/perf/intel/rapl: Fix module name collision with powercap intel-rapl MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since commit 4b6e2571bf00 the rapl perf module calls itself intel-rapl. That name was already in use by the rapl powercap driver, which now fails to load if the perf module is loaded. Fix the problem by renaming the perf module to intel-rapl-perf, so that both modules can coexist. Fixes: 4b6e2571bf00 ("x86/perf/intel/rapl: Make the Intel RAPL PMU driver modular") Signed-off-by: Ville Syrjälä Cc: Vince Weaver Cc: Alexander Shishkin Cc: Kan Liang Cc: Stephane Eranian Cc: Arnaldo Carvalho de Melo Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1466694409-3620-1-git-send-email-ville.syrjala@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/events/intel/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/events/intel/Makefile b/arch/x86/events/intel/Makefile index 3660b2cf245a..06c2baa51814 100644 --- a/arch/x86/events/intel/Makefile +++ b/arch/x86/events/intel/Makefile @@ -1,8 +1,8 @@ obj-$(CONFIG_CPU_SUP_INTEL) += core.o bts.o cqm.o obj-$(CONFIG_CPU_SUP_INTEL) += ds.o knc.o obj-$(CONFIG_CPU_SUP_INTEL) += lbr.o p4.o p6.o pt.o -obj-$(CONFIG_PERF_EVENTS_INTEL_RAPL) += intel-rapl.o -intel-rapl-objs := rapl.o +obj-$(CONFIG_PERF_EVENTS_INTEL_RAPL) += intel-rapl-perf.o +intel-rapl-perf-objs := rapl.o obj-$(CONFIG_PERF_EVENTS_INTEL_UNCORE) += intel-uncore.o intel-uncore-objs := uncore.o uncore_nhmex.o uncore_snb.o uncore_snbep.o obj-$(CONFIG_PERF_EVENTS_INTEL_CSTATE) += intel-cstate.o -- cgit v1.2.3 From 2c81a6477081966fe80b8c6daa68459bca896774 Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Tue, 14 Jun 2016 16:10:41 +0100 Subject: perf/core: Fix pmu::filter_match for SW-led groups The following commit: 66eb579e66ec ("perf: allow for PMU-specific event filtering") added the pmu::filter_match() callback. This was intended to avoid HW constraints on events from resulting in extremely pessimistic scheduling. However, pmu::filter_match() is only called for the leader of each event group. When the leader is a SW event, we do not filter the groups, and may fail at pmu::add() time, and when this happens we'll give up on scheduling any event groups later in the list until they are rotated ahead of the failing group. This can result in extremely sub-optimal event scheduling behaviour, e.g. if running the following on a big.LITTLE platform: $ taskset -c 0 ./perf stat \ -e 'a57{context-switches,armv8_cortex_a57/config=0x11/}' \ -e 'a53{context-switches,armv8_cortex_a53/config=0x11/}' \ ls context-switches (0.00%) armv8_cortex_a57/config=0x11/ (0.00%) 24 context-switches (37.36%) 57589154 armv8_cortex_a53/config=0x11/ (37.36%) Here the 'a53' event group was always eligible to be scheduled, but the 'a57' group never eligible to be scheduled, as the task was always affine to a Cortex-A53 CPU. The SW (group leader) event in the 'a57' group was eligible, but the HW event failed at pmu::add() time, resulting in ctx_flexible_sched_in giving up on scheduling further groups with HW events. One way of avoiding this is to check pmu::filter_match() on siblings as well as the group leader. If any of these fail their pmu::filter_match() call, we must skip the entire group before attempting to add any events. Signed-off-by: Mark Rutland Signed-off-by: Peter Zijlstra (Intel) Cc: Alexander Shishkin Cc: Arnaldo Carvalho de Melo Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Will Deacon Fixes: 66eb579e66ec ("perf: allow for PMU-specific event filtering") Link: http://lkml.kernel.org/r/1465917041-15339-1-git-send-email-mark.rutland@arm.com [ Small readability edits. ] Signed-off-by: Ingo Molnar --- kernel/events/core.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index 85cd41878a74..43d43a2d5811 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -1678,12 +1678,33 @@ static bool is_orphaned_event(struct perf_event *event) return event->state == PERF_EVENT_STATE_DEAD; } -static inline int pmu_filter_match(struct perf_event *event) +static inline int __pmu_filter_match(struct perf_event *event) { struct pmu *pmu = event->pmu; return pmu->filter_match ? pmu->filter_match(event) : 1; } +/* + * Check whether we should attempt to schedule an event group based on + * PMU-specific filtering. An event group can consist of HW and SW events, + * potentially with a SW leader, so we must check all the filters, to + * determine whether a group is schedulable: + */ +static inline int pmu_filter_match(struct perf_event *event) +{ + struct perf_event *child; + + if (!__pmu_filter_match(event)) + return 0; + + list_for_each_entry(child, &event->sibling_list, group_entry) { + if (!__pmu_filter_match(child)) + return 0; + } + + return 1; +} + static inline int event_filter_match(struct perf_event *event) { -- cgit v1.2.3