From 2319f847a8910cff1d46c9b66aa1dd7cc3e836a9 Mon Sep 17 00:00:00 2001 From: Mauricio Faria de Oliveira Date: Wed, 23 Nov 2016 10:33:19 -0200 Subject: scsi: lpfc: fix oops/BUG in lpfc_sli_ringtxcmpl_put() The BUG_ON() recently introduced in lpfc_sli_ringtxcmpl_put() is hit in the lpfc_els_abort() > lpfc_sli_issue_abort_iotag() > lpfc_sli_abort_iotag_issue() function path [similar names], due to 'piocb->vport == NULL': BUG_ON(!piocb || !piocb->vport); This happens because lpfc_sli_abort_iotag_issue() doesn't set the 'abtsiocbp->vport' pointer -- but this is not the problem. Previously, lpfc_sli_ringtxcmpl_put() accessed 'piocb->vport' only if 'piocb->iocb.ulpCommand' is neither CMD_ABORT_XRI_CN nor CMD_CLOSE_XRI_CN, which are the only possible values for lpfc_sli_abort_iotag_issue(): lpfc_sli_ringtxcmpl_put(): if ((unlikely(pring->ringno == LPFC_ELS_RING)) && (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) && (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN) && (!(piocb->vport->load_flag & FC_UNLOADING))) lpfc_sli_abort_iotag_issue(): if (phba->link_state >= LPFC_LINK_UP) iabt->ulpCommand = CMD_ABORT_XRI_CN; else iabt->ulpCommand = CMD_CLOSE_XRI_CN; So, this function path would not have hit this possible NULL pointer dereference before. In order to fix this regression, move the second part of the BUG_ON() check prior to the pointer dereference that it does check for. For reference, this is the stack trace observed. The problem happened because an unsolicited event was received - a PLOGI was received after our PLOGI was issued but not yet complete, so the discovery state machine goes on to sw-abort our PLOGI. kernel BUG at drivers/scsi/lpfc/lpfc_sli.c:1326! Oops: Exception in kernel mode, sig: 5 [#1] <...> NIP [...] lpfc_sli_ringtxcmpl_put+0x1c/0xf0 [lpfc] LR [...] __lpfc_sli_issue_iocb_s4+0x188/0x200 [lpfc] Call Trace: [...] [...] __lpfc_sli_issue_iocb_s4+0xb0/0x200 [lpfc] (unreliable) [...] [...] lpfc_sli_issue_abort_iotag+0x2b4/0x350 [lpfc] [...] [...] lpfc_els_abort+0x1a8/0x4a0 [lpfc] [...] [...] lpfc_rcv_plogi+0x6d4/0x700 [lpfc] [...] [...] lpfc_rcv_plogi_plogi_issue+0xd8/0x1d0 [lpfc] [...] [...] lpfc_disc_state_machine+0xc0/0x2b0 [lpfc] [...] [...] lpfc_els_unsol_buffer+0xcc0/0x26c0 [lpfc] [...] [...] lpfc_els_unsol_event+0xa8/0x220 [lpfc] [...] [...] lpfc_complete_unsol_iocb+0xb8/0x138 [lpfc] [...] [...] lpfc_sli4_handle_received_buffer+0x6a0/0xec0 [lpfc] [...] [...] lpfc_sli_handle_slow_ring_event_s4+0x1c4/0x240 [lpfc] [...] [...] lpfc_sli_handle_slow_ring_event+0x24/0x40 [lpfc] [...] [...] lpfc_do_work+0xd88/0x1970 [lpfc] [...] [...] kthread+0x108/0x130 [...] [...] ret_from_kernel_thread+0x5c/0xbc <...> Cc: stable@vger.kernel.org # v4.8 Fixes: 22466da5b4b7 ("lpfc: Fix possible NULL pointer dereference") Reported-by: Harsha Thyagaraja Signed-off-by: Mauricio Faria de Oliveira Reviewed-by: Johannes Thumshirn Signed-off-by: Martin K. Petersen --- drivers/scsi/lpfc/lpfc_sli.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index c5326055beee..f4f77c5b0c83 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -1323,18 +1323,20 @@ lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, { lockdep_assert_held(&phba->hbalock); - BUG_ON(!piocb || !piocb->vport); + BUG_ON(!piocb); list_add_tail(&piocb->list, &pring->txcmplq); piocb->iocb_flag |= LPFC_IO_ON_TXCMPLQ; if ((unlikely(pring->ringno == LPFC_ELS_RING)) && (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) && - (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN) && - (!(piocb->vport->load_flag & FC_UNLOADING))) - mod_timer(&piocb->vport->els_tmofunc, - jiffies + - msecs_to_jiffies(1000 * (phba->fc_ratov << 1))); + (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) { + BUG_ON(!piocb->vport); + if (!(piocb->vport->load_flag & FC_UNLOADING)) + mod_timer(&piocb->vport->els_tmofunc, + jiffies + + msecs_to_jiffies(1000 * (phba->fc_ratov << 1))); + } return 0; } -- cgit v1.2.3 From 5c3ef39738f74a3759918cc1a1ad099504f9d1b7 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Tue, 29 Nov 2016 12:13:38 +0100 Subject: ata: sata_mv: check for errors when parsing nr-ports from dt MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If the nr-ports property is missing ata_host_alloc_pinfo is called with n_ports = 0. This results in host->ports[0] = NULL which later makes mv_init_host() oops when dereferencing this pointer. Instead be a bit more cooperative and fail the probing with an error message. Signed-off-by: Uwe Kleine-König Signed-off-by: Tejun Heo --- drivers/ata/sata_mv.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index efc48bf89d51..823e938c9a78 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c @@ -4090,7 +4090,20 @@ static int mv_platform_probe(struct platform_device *pdev) /* allocate host */ if (pdev->dev.of_node) { - of_property_read_u32(pdev->dev.of_node, "nr-ports", &n_ports); + rc = of_property_read_u32(pdev->dev.of_node, "nr-ports", + &n_ports); + if (rc) { + dev_err(&pdev->dev, + "error parsing nr-ports property: %d\n", rc); + return rc; + } + + if (n_ports <= 0) { + dev_err(&pdev->dev, "nr-ports must be positive: %d\n", + n_ports); + return -EINVAL; + } + irq = irq_of_parse_and_map(pdev->dev.of_node, 0); } else { mv_platform_data = dev_get_platdata(&pdev->dev); -- cgit v1.2.3 From 9a901f5495e26e691c7d0ea7b6057a2f3e6330ed Mon Sep 17 00:00:00 2001 From: Vishal Verma Date: Mon, 5 Dec 2016 17:00:37 -0700 Subject: acpi, nfit: fix extended status translations for ACPI DSMs ACPI DSMs can have an 'extended' status which can be non-zero to convey additional information about the command. In the xlat_status routine, where we translate the command statuses, we were returning an error for a non-zero extended status, even if the primary status indicated success. Return from each command's 'case' once we have verified both its status and extend status are good. Cc: Fixes: 11294d63ac91 ("nfit: fail DSMs that return non-zero status by default") Signed-off-by: Vishal Verma Signed-off-by: Dan Williams --- drivers/acpi/nfit/core.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 71a7d07c28c9..60acbb1d159c 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -113,7 +113,7 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status) flags = ND_ARS_PERSISTENT | ND_ARS_VOLATILE; if ((status >> 16 & flags) == 0) return -ENOTTY; - break; + return 0; case ND_CMD_ARS_START: /* ARS is in progress */ if ((status & 0xffff) == NFIT_ARS_START_BUSY) @@ -122,7 +122,7 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status) /* Command failed */ if (status & 0xffff) return -EIO; - break; + return 0; case ND_CMD_ARS_STATUS: ars_status = buf; /* Command failed */ @@ -154,7 +154,7 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status) /* Unknown status */ if (status >> 16) return -EIO; - break; + return 0; case ND_CMD_CLEAR_ERROR: clear_err = buf; if (status & 0xffff) @@ -163,7 +163,7 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status) return -EIO; if (clear_err->length > clear_err->cleared) return clear_err->cleared; - break; + return 0; default: break; } -- cgit v1.2.3 From efda1b5d87cbc3d8816f94a3815b413f1868e10d Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 6 Dec 2016 09:10:12 -0800 Subject: acpi, nfit, libnvdimm: fix / harden ars_status output length handling Given ambiguities in the ACPI 6.1 definition of the "Output (Size)" field of the ARS (Address Range Scrub) Status command, a firmware implementation may in practice return 0, 4, or 8 to indicate that there is no output payload to process. The specification states "Size of Output Buffer in bytes, including this field.". However, 'Output Buffer' is also the name of the entire payload, and earlier in the specification it states "Max Query ARS Status Output Buffer Size: Maximum size of buffer (including the Status and Extended Status fields)". Without this fix if the BIOS happens to return 0 it causes memory corruption as evidenced by this result from the acpi_nfit_ctl() unit test. ars_status00000000: 00020000 00000000 ........ BUG: stack guard page was hit at ffffc90001750000 (stack is ffffc9000174c000..ffffc9000174ffff) kernel stack overflow (page fault): 0000 [#1] SMP DEBUG_PAGEALLOC task: ffff8803332d2ec0 task.stack: ffffc9000174c000 RIP: 0010:[] [] __memcpy+0x12/0x20 RSP: 0018:ffffc9000174f9a8 EFLAGS: 00010246 RAX: ffffc9000174fab8 RBX: 0000000000000000 RCX: 000000001fffff56 RDX: 0000000000000000 RSI: ffff8803231f5a08 RDI: ffffc90001750000 RBP: ffffc9000174fa88 R08: ffffc9000174fab0 R09: ffff8803231f54b8 R10: 0000000000000008 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000003 R15: ffff8803231f54a0 FS: 00007f3a611af640(0000) GS:ffff88033ed00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90001750000 CR3: 0000000325b20000 CR4: 00000000000406e0 Stack: ffffffffa00bc60d 0000000000000008 ffffc90000000001 ffffc9000174faac 0000000000000292 ffffffffa00c24e4 ffffffffa00c2914 0000000000000000 0000000000000000 ffffffff00000003 ffff880331ae8ad0 0000000800000246 Call Trace: [] ? acpi_nfit_ctl+0x49d/0x750 [nfit] [] nfit_test_probe+0x670/0xb1b [nfit_test] Cc: Fixes: 747ffe11b440 ("libnvdimm, tools/testing/nvdimm: fix 'ars_status' output buffer sizing") Signed-off-by: Dan Williams --- drivers/acpi/nfit/core.c | 3 ++- drivers/nvdimm/bus.c | 25 ++++++++++++++++++++----- include/linux/libnvdimm.h | 2 +- 3 files changed, 23 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 60acbb1d159c..e58ec32393b7 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -298,7 +298,8 @@ static int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, for (i = 0, offset = 0; i < desc->out_num; i++) { u32 out_size = nd_cmd_out_size(nvdimm, cmd, desc, i, buf, - (u32 *) out_obj->buffer.pointer); + (u32 *) out_obj->buffer.pointer, + out_obj->buffer.length - offset); if (offset + out_size > out_obj->buffer.length) { dev_dbg(dev, "%s:%s output object underflow cmd: %s field: %d\n", diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index a8b6949a8778..23d4a1728cdf 100644 --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -715,7 +715,7 @@ EXPORT_SYMBOL_GPL(nd_cmd_in_size); u32 nd_cmd_out_size(struct nvdimm *nvdimm, int cmd, const struct nd_cmd_desc *desc, int idx, const u32 *in_field, - const u32 *out_field) + const u32 *out_field, unsigned long remainder) { if (idx >= desc->out_num) return UINT_MAX; @@ -727,9 +727,24 @@ u32 nd_cmd_out_size(struct nvdimm *nvdimm, int cmd, return in_field[1]; else if (nvdimm && cmd == ND_CMD_VENDOR && idx == 2) return out_field[1]; - else if (!nvdimm && cmd == ND_CMD_ARS_STATUS && idx == 2) - return out_field[1] - 8; - else if (cmd == ND_CMD_CALL) { + else if (!nvdimm && cmd == ND_CMD_ARS_STATUS && idx == 2) { + /* + * Per table 9-276 ARS Data in ACPI 6.1, out_field[1] is + * "Size of Output Buffer in bytes, including this + * field." + */ + if (out_field[1] < 4) + return 0; + /* + * ACPI 6.1 is ambiguous if 'status' is included in the + * output size. If we encounter an output size that + * overshoots the remainder by 4 bytes, assume it was + * including 'status'. + */ + if (out_field[1] - 8 == remainder) + return remainder; + return out_field[1] - 4; + } else if (cmd == ND_CMD_CALL) { struct nd_cmd_pkg *pkg = (struct nd_cmd_pkg *) in_field; return pkg->nd_size_out; @@ -876,7 +891,7 @@ static int __nd_ioctl(struct nvdimm_bus *nvdimm_bus, struct nvdimm *nvdimm, /* process an output envelope */ for (i = 0; i < desc->out_num; i++) { u32 out_size = nd_cmd_out_size(nvdimm, cmd, desc, i, - (u32 *) in_env, (u32 *) out_env); + (u32 *) in_env, (u32 *) out_env, 0); u32 copy; if (out_size == UINT_MAX) { diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h index f4947fda11e7..8458c5351e56 100644 --- a/include/linux/libnvdimm.h +++ b/include/linux/libnvdimm.h @@ -143,7 +143,7 @@ u32 nd_cmd_in_size(struct nvdimm *nvdimm, int cmd, const struct nd_cmd_desc *desc, int idx, void *buf); u32 nd_cmd_out_size(struct nvdimm *nvdimm, int cmd, const struct nd_cmd_desc *desc, int idx, const u32 *in_field, - const u32 *out_field); + const u32 *out_field, unsigned long remainder); int nvdimm_bus_check_dimm_count(struct nvdimm_bus *nvdimm_bus, int dimm_count); struct nd_region *nvdimm_pmem_region_create(struct nvdimm_bus *nvdimm_bus, struct nd_region_desc *ndr_desc); -- cgit v1.2.3 From 82aa37cf09867c5e2c0326649d570e5b25c1189a Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 6 Dec 2016 12:45:24 -0800 Subject: acpi, nfit: validate ars_status output buffer size If an ARS Status command returns truncated output, do not process partial records or otherwise consume non-status fields. Cc: Fixes: 0caeef63e6d2 ("libnvdimm: Add a poison list and export badblocks") Signed-off-by: Dan Williams --- drivers/acpi/nfit/core.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index e58ec32393b7..4b8b4f520d76 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -146,7 +146,8 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status) * then just continue with the returned results. */ if (status == NFIT_ARS_STATUS_INTR) { - if (ars_status->flags & NFIT_ARS_F_OVERFLOW) + if (ars_status->out_length >= 40 && (ars_status->flags + & NFIT_ARS_F_OVERFLOW)) return -ENOSPC; return 0; } @@ -2002,19 +2003,32 @@ static int ars_get_status(struct acpi_nfit_desc *acpi_desc) return cmd_rc; } -static int ars_status_process_records(struct nvdimm_bus *nvdimm_bus, +static int ars_status_process_records(struct acpi_nfit_desc *acpi_desc, struct nd_cmd_ars_status *ars_status) { + struct nvdimm_bus *nvdimm_bus = acpi_desc->nvdimm_bus; int rc; u32 i; + /* + * First record starts at 44 byte offset from the start of the + * payload. + */ + if (ars_status->out_length < 44) + return 0; for (i = 0; i < ars_status->num_records; i++) { + /* only process full records */ + if (ars_status->out_length + < 44 + sizeof(struct nd_ars_record) * (i + 1)) + break; rc = nvdimm_bus_add_poison(nvdimm_bus, ars_status->records[i].err_address, ars_status->records[i].length); if (rc) return rc; } + if (i < ars_status->num_records) + dev_warn(acpi_desc->dev, "detected truncated ars results\n"); return 0; } @@ -2267,8 +2281,7 @@ static int acpi_nfit_query_poison(struct acpi_nfit_desc *acpi_desc, if (rc < 0 && rc != -ENOSPC) return rc; - if (ars_status_process_records(acpi_desc->nvdimm_bus, - acpi_desc->ars_status)) + if (ars_status_process_records(acpi_desc, acpi_desc->ars_status)) return -ENOMEM; return 0; -- cgit v1.2.3 From d6eb270c57fef35798525004ddf2ac5dcdadd43b Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 6 Dec 2016 15:06:55 -0800 Subject: acpi, nfit: fix bus vs dimm confusion in xlat_status Given dimms and bus commands share the same command number space we need to be careful that we are translating status in the correct context. Otherwise we can, for example, fail an ND_CMD_GET_CONFIG_SIZE command because max_xfer is zero. It fails because that condition erroneously correlates with the 'cleared == 0' failure of ND_CMD_CLEAR_ERROR. Cc: Fixes: aef253382266 ("libnvdimm, nfit: centralize command status translation") Signed-off-by: Dan Williams --- drivers/acpi/nfit/core.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 4b8b4f520d76..09d3db322ee8 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -94,7 +94,7 @@ static struct acpi_device *to_acpi_dev(struct acpi_nfit_desc *acpi_desc) return to_acpi_device(acpi_desc->dev); } -static int xlat_status(void *buf, unsigned int cmd, u32 status) +static int xlat_bus_status(void *buf, unsigned int cmd, u32 status) { struct nd_cmd_clear_error *clear_err; struct nd_cmd_ars_status *ars_status; @@ -175,6 +175,16 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status) return 0; } +static int xlat_status(struct nvdimm *nvdimm, void *buf, unsigned int cmd, + u32 status) +{ + if (!nvdimm) + return xlat_bus_status(buf, cmd, status); + if (status) + return -EIO; + return 0; +} + static int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm, unsigned int cmd, void *buf, unsigned int buf_len, int *cmd_rc) @@ -335,7 +345,8 @@ static int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, */ rc = buf_len - offset - in_buf.buffer.length; if (cmd_rc) - *cmd_rc = xlat_status(buf, cmd, fw_status); + *cmd_rc = xlat_status(nvdimm, buf, cmd, + fw_status); } else { dev_err(dev, "%s:%s underrun cmd: %s buf_len: %d out_len: %d\n", __func__, dimm_name, cmd_name, buf_len, @@ -345,7 +356,7 @@ static int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, } else { rc = 0; if (cmd_rc) - *cmd_rc = xlat_status(buf, cmd, fw_status); + *cmd_rc = xlat_status(nvdimm, buf, cmd, fw_status); } out: -- cgit v1.2.3 From a7de92dac9f0dbf01deb56fe1d661d7baac097e1 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Mon, 5 Dec 2016 13:43:25 -0800 Subject: tools/testing/nvdimm: unit test acpi_nfit_ctl() A recent flurry of bug discoveries in the nfit driver's DSM marshalling routine has highlighted the fact that we do not have unit test coverage for this routine. Add a self-test of acpi_nfit_ctl() routine before probing the "nfit_test.0" device. This mocks stimulus to acpi_nfit_ctl() and if any of the tests fail "nfit_test.0" will be unavailable causing the rest of the tests to not run / fail. This unit test will also be a place to land reproductions of quirky BIOS behavior discovered in the field and ensure the kernel does not regress against implementations it has seen in practice. Signed-off-by: Dan Williams --- drivers/acpi/nfit/core.c | 6 +- drivers/acpi/nfit/nfit.h | 2 + tools/testing/nvdimm/Kbuild | 1 + tools/testing/nvdimm/test/iomap.c | 23 +++- tools/testing/nvdimm/test/nfit.c | 236 +++++++++++++++++++++++++++++++++- tools/testing/nvdimm/test/nfit_test.h | 8 +- 6 files changed, 267 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 09d3db322ee8..312c4b4dc363 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -185,9 +185,8 @@ static int xlat_status(struct nvdimm *nvdimm, void *buf, unsigned int cmd, return 0; } -static int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, - struct nvdimm *nvdimm, unsigned int cmd, void *buf, - unsigned int buf_len, int *cmd_rc) +int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm, + unsigned int cmd, void *buf, unsigned int buf_len, int *cmd_rc) { struct acpi_nfit_desc *acpi_desc = to_acpi_nfit_desc(nd_desc); union acpi_object in_obj, in_buf, *out_obj; @@ -364,6 +363,7 @@ static int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, return rc; } +EXPORT_SYMBOL_GPL(acpi_nfit_ctl); static const char *spa_type_name(u16 type) { diff --git a/drivers/acpi/nfit/nfit.h b/drivers/acpi/nfit/nfit.h index 14296f5267c8..fc29c2e9832e 100644 --- a/drivers/acpi/nfit/nfit.h +++ b/drivers/acpi/nfit/nfit.h @@ -240,5 +240,7 @@ const u8 *to_nfit_uuid(enum nfit_uuids id); int acpi_nfit_init(struct acpi_nfit_desc *acpi_desc, void *nfit, acpi_size sz); void __acpi_nfit_notify(struct device *dev, acpi_handle handle, u32 event); void __acpi_nvdimm_notify(struct device *dev, u32 event); +int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm, + unsigned int cmd, void *buf, unsigned int buf_len, int *cmd_rc); void acpi_nfit_desc_init(struct acpi_nfit_desc *acpi_desc, struct device *dev); #endif /* __NFIT_H__ */ diff --git a/tools/testing/nvdimm/Kbuild b/tools/testing/nvdimm/Kbuild index 582db95127ed..405212be044a 100644 --- a/tools/testing/nvdimm/Kbuild +++ b/tools/testing/nvdimm/Kbuild @@ -14,6 +14,7 @@ ldflags-y += --wrap=devm_memremap_pages ldflags-y += --wrap=insert_resource ldflags-y += --wrap=remove_resource ldflags-y += --wrap=acpi_evaluate_object +ldflags-y += --wrap=acpi_evaluate_dsm DRIVERS := ../../../drivers NVDIMM_SRC := $(DRIVERS)/nvdimm diff --git a/tools/testing/nvdimm/test/iomap.c b/tools/testing/nvdimm/test/iomap.c index 3ccef732fce9..64cae1a5deff 100644 --- a/tools/testing/nvdimm/test/iomap.c +++ b/tools/testing/nvdimm/test/iomap.c @@ -26,14 +26,17 @@ static LIST_HEAD(iomap_head); static struct iomap_ops { nfit_test_lookup_fn nfit_test_lookup; + nfit_test_evaluate_dsm_fn evaluate_dsm; struct list_head list; } iomap_ops = { .list = LIST_HEAD_INIT(iomap_ops.list), }; -void nfit_test_setup(nfit_test_lookup_fn lookup) +void nfit_test_setup(nfit_test_lookup_fn lookup, + nfit_test_evaluate_dsm_fn evaluate) { iomap_ops.nfit_test_lookup = lookup; + iomap_ops.evaluate_dsm = evaluate; list_add_rcu(&iomap_ops.list, &iomap_head); } EXPORT_SYMBOL(nfit_test_setup); @@ -367,4 +370,22 @@ acpi_status __wrap_acpi_evaluate_object(acpi_handle handle, acpi_string path, } EXPORT_SYMBOL(__wrap_acpi_evaluate_object); +union acpi_object * __wrap_acpi_evaluate_dsm(acpi_handle handle, const u8 *uuid, + u64 rev, u64 func, union acpi_object *argv4) +{ + union acpi_object *obj = ERR_PTR(-ENXIO); + struct iomap_ops *ops; + + rcu_read_lock(); + ops = list_first_or_null_rcu(&iomap_head, typeof(*ops), list); + if (ops) + obj = ops->evaluate_dsm(handle, uuid, rev, func, argv4); + rcu_read_unlock(); + + if (IS_ERR(obj)) + return acpi_evaluate_dsm(handle, uuid, rev, func, argv4); + return obj; +} +EXPORT_SYMBOL(__wrap_acpi_evaluate_dsm); + MODULE_LICENSE("GPL v2"); diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c index c9a6458cb63e..71620fa95953 100644 --- a/tools/testing/nvdimm/test/nfit.c +++ b/tools/testing/nvdimm/test/nfit.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include "nfit_test.h" @@ -1506,6 +1507,225 @@ static int nfit_test_blk_do_io(struct nd_blk_region *ndbr, resource_size_t dpa, return 0; } +static unsigned long nfit_ctl_handle; + +union acpi_object *result; + +static union acpi_object *nfit_test_evaluate_dsm(acpi_handle handle, + const u8 *uuid, u64 rev, u64 func, union acpi_object *argv4) +{ + if (handle != &nfit_ctl_handle) + return ERR_PTR(-ENXIO); + + return result; +} + +static int setup_result(void *buf, size_t size) +{ + result = kmalloc(sizeof(union acpi_object) + size, GFP_KERNEL); + if (!result) + return -ENOMEM; + result->package.type = ACPI_TYPE_BUFFER, + result->buffer.pointer = (void *) (result + 1); + result->buffer.length = size; + memcpy(result->buffer.pointer, buf, size); + memset(buf, 0, size); + return 0; +} + +static int nfit_ctl_test(struct device *dev) +{ + int rc, cmd_rc; + struct nvdimm *nvdimm; + struct acpi_device *adev; + struct nfit_mem *nfit_mem; + struct nd_ars_record *record; + struct acpi_nfit_desc *acpi_desc; + const u64 test_val = 0x0123456789abcdefULL; + unsigned long mask, cmd_size, offset; + union { + struct nd_cmd_get_config_size cfg_size; + struct nd_cmd_ars_status ars_stat; + struct nd_cmd_ars_cap ars_cap; + char buf[sizeof(struct nd_cmd_ars_status) + + sizeof(struct nd_ars_record)]; + } cmds; + + adev = devm_kzalloc(dev, sizeof(*adev), GFP_KERNEL); + if (!adev) + return -ENOMEM; + *adev = (struct acpi_device) { + .handle = &nfit_ctl_handle, + .dev = { + .init_name = "test-adev", + }, + }; + + acpi_desc = devm_kzalloc(dev, sizeof(*acpi_desc), GFP_KERNEL); + if (!acpi_desc) + return -ENOMEM; + *acpi_desc = (struct acpi_nfit_desc) { + .nd_desc = { + .cmd_mask = 1UL << ND_CMD_ARS_CAP + | 1UL << ND_CMD_ARS_START + | 1UL << ND_CMD_ARS_STATUS + | 1UL << ND_CMD_CLEAR_ERROR, + .module = THIS_MODULE, + .provider_name = "ACPI.NFIT", + .ndctl = acpi_nfit_ctl, + }, + .dev = &adev->dev, + }; + + nfit_mem = devm_kzalloc(dev, sizeof(*nfit_mem), GFP_KERNEL); + if (!nfit_mem) + return -ENOMEM; + + mask = 1UL << ND_CMD_SMART | 1UL << ND_CMD_SMART_THRESHOLD + | 1UL << ND_CMD_DIMM_FLAGS | 1UL << ND_CMD_GET_CONFIG_SIZE + | 1UL << ND_CMD_GET_CONFIG_DATA | 1UL << ND_CMD_SET_CONFIG_DATA + | 1UL << ND_CMD_VENDOR; + *nfit_mem = (struct nfit_mem) { + .adev = adev, + .family = NVDIMM_FAMILY_INTEL, + .dsm_mask = mask, + }; + + nvdimm = devm_kzalloc(dev, sizeof(*nvdimm), GFP_KERNEL); + if (!nvdimm) + return -ENOMEM; + *nvdimm = (struct nvdimm) { + .provider_data = nfit_mem, + .cmd_mask = mask, + .dev = { + .init_name = "test-dimm", + }, + }; + + + /* basic checkout of a typical 'get config size' command */ + cmd_size = sizeof(cmds.cfg_size); + cmds.cfg_size = (struct nd_cmd_get_config_size) { + .status = 0, + .config_size = SZ_128K, + .max_xfer = SZ_4K, + }; + rc = setup_result(cmds.buf, cmd_size); + if (rc) + return rc; + rc = acpi_nfit_ctl(&acpi_desc->nd_desc, nvdimm, ND_CMD_GET_CONFIG_SIZE, + cmds.buf, cmd_size, &cmd_rc); + + if (rc < 0 || cmd_rc || cmds.cfg_size.status != 0 + || cmds.cfg_size.config_size != SZ_128K + || cmds.cfg_size.max_xfer != SZ_4K) { + dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n", + __func__, __LINE__, rc, cmd_rc); + return -EIO; + } + + + /* test ars_status with zero output */ + cmd_size = offsetof(struct nd_cmd_ars_status, address); + cmds.ars_stat = (struct nd_cmd_ars_status) { + .out_length = 0, + }; + rc = setup_result(cmds.buf, cmd_size); + if (rc) + return rc; + rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_ARS_STATUS, + cmds.buf, cmd_size, &cmd_rc); + + if (rc < 0 || cmd_rc) { + dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n", + __func__, __LINE__, rc, cmd_rc); + return -EIO; + } + + + /* test ars_cap with benign extended status */ + cmd_size = sizeof(cmds.ars_cap); + cmds.ars_cap = (struct nd_cmd_ars_cap) { + .status = ND_ARS_PERSISTENT << 16, + }; + offset = offsetof(struct nd_cmd_ars_cap, status); + rc = setup_result(cmds.buf + offset, cmd_size - offset); + if (rc) + return rc; + rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_ARS_CAP, + cmds.buf, cmd_size, &cmd_rc); + + if (rc < 0 || cmd_rc) { + dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n", + __func__, __LINE__, rc, cmd_rc); + return -EIO; + } + + + /* test ars_status with 'status' trimmed from 'out_length' */ + cmd_size = sizeof(cmds.ars_stat) + sizeof(struct nd_ars_record); + cmds.ars_stat = (struct nd_cmd_ars_status) { + .out_length = cmd_size - 4, + }; + record = &cmds.ars_stat.records[0]; + *record = (struct nd_ars_record) { + .length = test_val, + }; + rc = setup_result(cmds.buf, cmd_size); + if (rc) + return rc; + rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_ARS_STATUS, + cmds.buf, cmd_size, &cmd_rc); + + if (rc < 0 || cmd_rc || record->length != test_val) { + dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n", + __func__, __LINE__, rc, cmd_rc); + return -EIO; + } + + + /* test ars_status with 'Output (Size)' including 'status' */ + cmd_size = sizeof(cmds.ars_stat) + sizeof(struct nd_ars_record); + cmds.ars_stat = (struct nd_cmd_ars_status) { + .out_length = cmd_size, + }; + record = &cmds.ars_stat.records[0]; + *record = (struct nd_ars_record) { + .length = test_val, + }; + rc = setup_result(cmds.buf, cmd_size); + if (rc) + return rc; + rc = acpi_nfit_ctl(&acpi_desc->nd_desc, NULL, ND_CMD_ARS_STATUS, + cmds.buf, cmd_size, &cmd_rc); + + if (rc < 0 || cmd_rc || record->length != test_val) { + dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n", + __func__, __LINE__, rc, cmd_rc); + return -EIO; + } + + + /* test extended status for get_config_size results in failure */ + cmd_size = sizeof(cmds.cfg_size); + cmds.cfg_size = (struct nd_cmd_get_config_size) { + .status = 1 << 16, + }; + rc = setup_result(cmds.buf, cmd_size); + if (rc) + return rc; + rc = acpi_nfit_ctl(&acpi_desc->nd_desc, nvdimm, ND_CMD_GET_CONFIG_SIZE, + cmds.buf, cmd_size, &cmd_rc); + + if (rc < 0 || cmd_rc >= 0) { + dev_dbg(dev, "%s: failed at: %d rc: %d cmd_rc: %d\n", + __func__, __LINE__, rc, cmd_rc); + return -EIO; + } + + return 0; +} + static int nfit_test_probe(struct platform_device *pdev) { struct nvdimm_bus_descriptor *nd_desc; @@ -1516,6 +1736,12 @@ static int nfit_test_probe(struct platform_device *pdev) union acpi_object *obj; int rc; + if (strcmp(dev_name(&pdev->dev), "nfit_test.0") == 0) { + rc = nfit_ctl_test(&pdev->dev); + if (rc) + return rc; + } + nfit_test = to_nfit_test(&pdev->dev); /* common alloc */ @@ -1639,11 +1865,13 @@ static __init int nfit_test_init(void) { int rc, i; - nfit_test_dimm = class_create(THIS_MODULE, "nfit_test_dimm"); - if (IS_ERR(nfit_test_dimm)) - return PTR_ERR(nfit_test_dimm); + nfit_test_setup(nfit_test_lookup, nfit_test_evaluate_dsm); - nfit_test_setup(nfit_test_lookup); + nfit_test_dimm = class_create(THIS_MODULE, "nfit_test_dimm"); + if (IS_ERR(nfit_test_dimm)) { + rc = PTR_ERR(nfit_test_dimm); + goto err_register; + } for (i = 0; i < NUM_NFITS; i++) { struct nfit_test *nfit_test; diff --git a/tools/testing/nvdimm/test/nfit_test.h b/tools/testing/nvdimm/test/nfit_test.h index c281dd2e5e2d..f54c0032c6ff 100644 --- a/tools/testing/nvdimm/test/nfit_test.h +++ b/tools/testing/nvdimm/test/nfit_test.h @@ -31,11 +31,17 @@ struct nfit_test_resource { void *buf; }; +union acpi_object; +typedef void *acpi_handle; + typedef struct nfit_test_resource *(*nfit_test_lookup_fn)(resource_size_t); +typedef union acpi_object *(*nfit_test_evaluate_dsm_fn)(acpi_handle handle, + const u8 *uuid, u64 rev, u64 func, union acpi_object *argv4); void __iomem *__wrap_ioremap_nocache(resource_size_t offset, unsigned long size); void __wrap_iounmap(volatile void __iomem *addr); -void nfit_test_setup(nfit_test_lookup_fn lookup); +void nfit_test_setup(nfit_test_lookup_fn lookup, + nfit_test_evaluate_dsm_fn evaluate); void nfit_test_teardown(void); struct nfit_test_resource *get_nfit_res(resource_size_t resource); #endif -- cgit v1.2.3 From 325896ffdf90f7cbd59fb873b7ba20d60d1ddf3c Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 6 Dec 2016 17:03:35 -0800 Subject: device-dax: fix private mapping restriction, permit read-only Hugh notes in response to commit 4cb19355ea19 "device-dax: fail all private mapping attempts": "I think that is more restrictive than you intended: haven't tried, but I believe it rejects a PROT_READ, MAP_SHARED, O_RDONLY fd mmap, leaving no way to mmap /dev/dax without write permission to it." Indeed it does restrict read-only mappings, switch to checking VM_MAYSHARE, not VM_SHARED. Cc: Cc: Dave Hansen Cc: Pawel Lebioda Fixes: 4cb19355ea19 ("device-dax: fail all private mapping attempts") Reported-by: Hugh Dickins Signed-off-by: Dan Williams --- drivers/dax/dax.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/dax/dax.c b/drivers/dax/dax.c index 3d94ff20fdca..286447a83dab 100644 --- a/drivers/dax/dax.c +++ b/drivers/dax/dax.c @@ -271,7 +271,7 @@ static int check_vma(struct dax_dev *dax_dev, struct vm_area_struct *vma, return -ENXIO; /* prevent private mappings from being established */ - if ((vma->vm_flags & VM_SHARED) != VM_SHARED) { + if ((vma->vm_flags & VM_MAYSHARE) != VM_MAYSHARE) { dev_info(dev, "%s: %s: fail, attempted private mapping\n", current->comm, func); return -EINVAL; -- cgit v1.2.3 From 68c7f8c1c4e9b06e6b153fa3e9e0cda2ef5aaed8 Mon Sep 17 00:00:00 2001 From: Romain Perier Date: Mon, 5 Dec 2016 09:56:38 +0100 Subject: crypto: marvell - Don't copy hash operation twice into the SRAM No need to copy the template of an hash operation twice into the SRAM from the step function. Fixes: commit 85030c5168f1 ("crypto: marvell - Add support for chai...") Signed-off-by: Romain Perier Cc: Signed-off-by: Herbert Xu --- drivers/crypto/marvell/hash.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'drivers') diff --git a/drivers/crypto/marvell/hash.c b/drivers/crypto/marvell/hash.c index 9f284682c091..daff38801d0b 100644 --- a/drivers/crypto/marvell/hash.c +++ b/drivers/crypto/marvell/hash.c @@ -172,9 +172,6 @@ static void mv_cesa_ahash_std_step(struct ahash_request *req) for (i = 0; i < digsize / 4; i++) writel_relaxed(creq->state[i], engine->regs + CESA_IVDIG(i)); - mv_cesa_adjust_op(engine, &creq->op_tmpl); - memcpy_toio(engine->sram, &creq->op_tmpl, sizeof(creq->op_tmpl)); - if (creq->cache_ptr) memcpy_toio(engine->sram + CESA_SA_DATA_SRAM_OFFSET, creq->cache, creq->cache_ptr); -- cgit v1.2.3 From 9e5f7a149e00d211177f6de8be427ebc72a1c363 Mon Sep 17 00:00:00 2001 From: Romain Perier Date: Mon, 5 Dec 2016 09:56:39 +0100 Subject: crypto: marvell - Don't corrupt state of an STD req for re-stepped ahash mv_cesa_hash_std_step() copies the creq->state into the SRAM at each step, but this is only required on the first one. By doing that, we overwrite the engine state, and get erroneous results when the crypto request is split in several chunks to fit in the internal SRAM. This commit changes the function to copy the state only on the first step. Fixes: commit 2786cee8e50b ("crypto: marvell - Move SRAM I/O op...") Signed-off-by: Romain Perier Cc: Signed-off-by: Herbert Xu --- drivers/crypto/marvell/hash.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/crypto/marvell/hash.c b/drivers/crypto/marvell/hash.c index daff38801d0b..77712b375b84 100644 --- a/drivers/crypto/marvell/hash.c +++ b/drivers/crypto/marvell/hash.c @@ -168,9 +168,11 @@ static void mv_cesa_ahash_std_step(struct ahash_request *req) mv_cesa_adjust_op(engine, &creq->op_tmpl); memcpy_toio(engine->sram, &creq->op_tmpl, sizeof(creq->op_tmpl)); - digsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req)); - for (i = 0; i < digsize / 4; i++) - writel_relaxed(creq->state[i], engine->regs + CESA_IVDIG(i)); + if (!sreq->offset) { + digsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req)); + for (i = 0; i < digsize / 4; i++) + writel_relaxed(creq->state[i], engine->regs + CESA_IVDIG(i)); + } if (creq->cache_ptr) memcpy_toio(engine->sram + CESA_SA_DATA_SRAM_OFFSET, -- cgit v1.2.3 From 39eaf759466f4e3fbeaa39075512f4f345dffdc8 Mon Sep 17 00:00:00 2001 From: Horia Geantă Date: Mon, 5 Dec 2016 11:06:58 +0200 Subject: crypto: caam - fix pointer size for AArch64 boot loader, AArch32 kernel MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Start with a clean slate before dealing with bit 16 (pointer size) of Master Configuration Register. This fixes the case of AArch64 boot loader + AArch32 kernel, when the boot loader might set MCFGR[PS] and kernel would fail to clear it. Cc: Reported-by: Alison Wang Signed-off-by: Horia Geantă Reviewed-By: Alison Wang Signed-off-by: Herbert Xu --- drivers/crypto/caam/ctrl.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c index 72ff19658985..e483b78c6343 100644 --- a/drivers/crypto/caam/ctrl.c +++ b/drivers/crypto/caam/ctrl.c @@ -558,8 +558,9 @@ static int caam_probe(struct platform_device *pdev) * Enable DECO watchdogs and, if this is a PHYS_ADDR_T_64BIT kernel, * long pointers in master configuration register */ - clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK, MCFGR_AWCACHE_CACH | - MCFGR_AWCACHE_BUFF | MCFGR_WDENABLE | MCFGR_LARGE_BURST | + clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK | MCFGR_LONG_PTR, + MCFGR_AWCACHE_CACH | MCFGR_AWCACHE_BUFF | + MCFGR_WDENABLE | MCFGR_LARGE_BURST | (sizeof(dma_addr_t) == sizeof(u64) ? MCFGR_LONG_PTR : 0)); /* -- cgit v1.2.3 From faefba95c9e8ca3a523831c2ec2150f5ea054dae Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 6 Dec 2016 10:38:29 -0500 Subject: drm/amdgpu: just suspend the hw on pci shutdown MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We can't just reuse pci_remove as there may be userspace still doing things. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98638 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97980 Reviewed-by: Christian König Reported-and-tested-by: Mike Lothian Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 5 ++++- 3 files changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 496f72b134eb..05c2850c04b0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -2472,6 +2472,7 @@ void amdgpu_driver_postclose_kms(struct drm_device *dev, struct drm_file *file_priv); void amdgpu_driver_preclose_kms(struct drm_device *dev, struct drm_file *file_priv); +int amdgpu_suspend(struct amdgpu_device *adev); int amdgpu_device_suspend(struct drm_device *dev, bool suspend, bool fbcon); int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon); u32 amdgpu_get_vblank_counter_kms(struct drm_device *dev, unsigned int pipe); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 3161d77bf299..e41d4baebf86 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1493,7 +1493,7 @@ static int amdgpu_fini(struct amdgpu_device *adev) return 0; } -static int amdgpu_suspend(struct amdgpu_device *adev) +int amdgpu_suspend(struct amdgpu_device *adev) { int i, r; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 02ff0747197c..e0890deccb2f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -479,12 +479,15 @@ amdgpu_pci_remove(struct pci_dev *pdev) static void amdgpu_pci_shutdown(struct pci_dev *pdev) { + struct drm_device *dev = pci_get_drvdata(pdev); + struct amdgpu_device *adev = dev->dev_private; + /* if we are running in a VM, make sure the device * torn down properly on reboot/shutdown. * unfortunately we can't detect certain * hypervisors so just do this all the time. */ - amdgpu_pci_remove(pdev); + amdgpu_suspend(adev); } static int amdgpu_pmops_suspend(struct device *dev) -- cgit v1.2.3 From 74685b08fbb26ff5b8448fabe0941a53269dd33e Mon Sep 17 00:00:00 2001 From: Alex Date: Tue, 6 Dec 2016 10:56:51 -0800 Subject: drivers: net: cpsw-phy-sel: Clear RGMII_IDMODE on "rgmii" links Support for setting the RGMII_IDMODE bit was added in the commit referenced below. However, that commit did not add the symmetrical clearing of the bit by way of setting it in "mask". Add it here. Note that the documentation marks clearing this bit as "reserved", however, according to TI, support for delaying the clock does exist in the MAC, although it is not officially supported. We tested this on a board with an RGMII to RGMII link that will not work unless this bit is cleared. Fixes: 0fb26c3063ea ("drivers: net: cpsw-phy-sel: add support to configure rgmii internal delay") Signed-off-by: Alexandru Gagniuc Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpsw-phy-sel.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/net/ethernet/ti/cpsw-phy-sel.c b/drivers/net/ethernet/ti/cpsw-phy-sel.c index ba1e45ff6aae..18013645e76c 100644 --- a/drivers/net/ethernet/ti/cpsw-phy-sel.c +++ b/drivers/net/ethernet/ti/cpsw-phy-sel.c @@ -81,6 +81,7 @@ static void cpsw_gmii_sel_am3352(struct cpsw_phy_sel_priv *priv, }; mask = GMII_SEL_MODE_MASK << (slave * 2) | BIT(slave + 6); + mask |= BIT(slave + 4); mode <<= slave * 2; if (priv->rmii_clock_external) { -- cgit v1.2.3 From a50af86dd49ee1851d1ccf06dd0019c05b95e297 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Tue, 6 Dec 2016 13:43:54 -0800 Subject: netvsc: reduce maximum GSO size Hyper-V (and Azure) support using NVGRE which requires some extra space for encapsulation headers. Because of this the largest allowed TSO packet is reduced. For older releases, hard code a fixed reduced value. For next release, there is a better solution which uses result of host offload negotiation. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/hyperv/netvsc_drv.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers') diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index f6382150b16a..c9140c3aeb67 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -47,6 +47,10 @@ NETIF_F_TSO | \ NETIF_F_TSO6 | \ NETIF_F_HW_CSUM) + +/* Restrict GSO size to account for NVGRE */ +#define NETVSC_GSO_MAX_SIZE 62768 + static int ring_size = 128; module_param(ring_size, int, S_IRUGO); MODULE_PARM_DESC(ring_size, "Ring buffer size (# of pages)"); @@ -1400,6 +1404,7 @@ static int netvsc_probe(struct hv_device *dev, nvdev = net_device_ctx->nvdev; netif_set_real_num_tx_queues(net, nvdev->num_chn); netif_set_real_num_rx_queues(net, nvdev->num_chn); + netif_set_gso_max_size(net, NETVSC_GSO_MAX_SIZE); ret = register_netdev(net); if (ret != 0) { -- cgit v1.2.3 From ec988ad78ed6d184a7f4ca6b8e962b0e8f1de461 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Tue, 6 Dec 2016 20:54:43 -0800 Subject: phy: Don't increment MDIO bus refcount unless it's a different owner Commit 3e3aaf649416 ("phy: fix mdiobus module safety") fixed the way we dealt with MDIO bus module reference count, but sort of introduced a regression in that, if an Ethernet driver registers its own MDIO bus driver, as is common, we will end up with the Ethernet driver's module->refnct set to 1, thus preventing this driver from any removal. Fix this by comparing the network device's device driver owner against the MDIO bus driver owner, and only if they are different, increment the MDIO bus module refcount. Fixes: 3e3aaf649416 ("phy: fix mdiobus module safety") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/phy/phy_device.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 1a4bf8acad78..c4ceb082e970 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -857,11 +857,17 @@ EXPORT_SYMBOL(phy_attached_print); int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, u32 flags, phy_interface_t interface) { + struct module *ndev_owner = dev->dev.parent->driver->owner; struct mii_bus *bus = phydev->mdio.bus; struct device *d = &phydev->mdio.dev; int err; - if (!try_module_get(bus->owner)) { + /* For Ethernet device drivers that register their own MDIO bus, we + * will have bus->owner match ndev_mod, so we do not want to increment + * our own module->refcnt here, otherwise we would not be able to + * unload later on. + */ + if (ndev_owner != bus->owner && !try_module_get(bus->owner)) { dev_err(&dev->dev, "failed to get the bus module\n"); return -EIO; } @@ -921,7 +927,8 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, error: put_device(d); - module_put(bus->owner); + if (ndev_owner != bus->owner) + module_put(bus->owner); return err; } EXPORT_SYMBOL(phy_attach_direct); @@ -971,6 +978,8 @@ EXPORT_SYMBOL(phy_attach); */ void phy_detach(struct phy_device *phydev) { + struct net_device *dev = phydev->attached_dev; + struct module *ndev_owner = dev->dev.parent->driver->owner; struct mii_bus *bus; int i; @@ -998,7 +1007,8 @@ void phy_detach(struct phy_device *phydev) bus = phydev->mdio.bus; put_device(&phydev->mdio.dev); - module_put(bus->owner); + if (ndev_owner != bus->owner) + module_put(bus->owner); } EXPORT_SYMBOL(phy_detach); -- cgit v1.2.3 From e185934ff94466b4a449165e5f1c164a44d005f2 Mon Sep 17 00:00:00 2001 From: Nicolai Stange Date: Wed, 7 Dec 2016 22:21:33 +0100 Subject: libata-scsi: disable SCT Write Same for the moment SCT Write Same support had been introduced with commit 7b2030942859 ("libata: Add support for SCT Write Same") Some problems, namely excessive userspace segfaults, had been reported at http://lkml.kernel.org/r/20160908192736.GA4356@gmail.com This lead to commit 0ce1b18c42a5 ("libata: Some drives failing on SCT Write Same") which strived to disable SCT Write Same on !ZAC devices. Due to the way this was done and to the logic in sd_config_write_same(), this didn't work for those devices that have ->max_ws_blocks > SD_MAX_WS10_BLOCKS: for these, ->no_write_same and ->max_write_same_sectors would still be non-zero, but ->ws10 == ->ws16 == 0. This would cause sd_setup_write_same_cmnd() to demultiplex REQ_OP_WRITE_SAME requests to WRITE_SAME, and these in turn aren't supported by libata-scsi: EXT4-fs (dm-1): Delayed block allocation failed for inode 2625094 at logical offset 2032 with max blocks 2 with error 121 EXT4-fs (dm-1): This should not happen!! Data will be lost 121 == EREMOTEIO is what scsi_io_completion() asserts in case of invalid opcodes. Back to the original problem of userspace segfaults: this can be tracked down to ata_format_sct_write_same() overwriting the input page. Sometimes, this page is ZERO_PAGE(0) which ceases to be filled with zeros from that point on. Since ZERO_PAGE(0) is used for userspace .bss mappings, code of the following is doomed: static char *a = NULL; /* .bss */ ... if (a) *a = 'a'; This problem is not solved by disabling SCT Write Same for !ZAC devices only. It can certainly be fixed, but the final release is quite close -- so disable SCT Write Same for all ATA devices rather than introducing some SCT key buffer allocation schemes at this point. Fixes: 7b2030942859 ("libata: Add support for SCT Write Same") Signed-off-by: Nicolai Stange Signed-off-by: Tejun Heo --- drivers/ata/libata-scsi.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index c4eb4ae9c3aa..8e575fbdf31d 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -1159,6 +1159,7 @@ static void ata_scsi_sdev_config(struct scsi_device *sdev) { sdev->use_10_for_rw = 1; sdev->use_10_for_ms = 1; + sdev->no_write_same = 1; /* Schedule policy is determined by ->qc_defer() callback and * it needs to see every deferred qc. Set dev_blocked to 1 to -- cgit v1.2.3 From 5c7e9ccd91b90d87029261f8856294ee51934cab Mon Sep 17 00:00:00 2001 From: Sergey Senozhatsky Date: Wed, 7 Dec 2016 14:44:31 -0800 Subject: zram: restrict add/remove attributes to root only zram hot_add sysfs attribute is a very 'special' attribute - reading from it creates a new uninitialized zram device. This file, by a mistake, can be read by a 'normal' user at the moment, while only root must be able to create a new zram device, therefore hot_add attribute must have S_IRUSR mode, not S_IRUGO. [akpm@linux-foundation.org: s/sence/sense/, reflow comment to use 80 cols] Fixes: 6566d1a32bf72 ("zram: add dynamic device add/remove functionality") Link: http://lkml.kernel.org/r/20161205155845.20129-1-sergey.senozhatsky@gmail.com Signed-off-by: Sergey Senozhatsky Reported-by: Steven Allen Acked-by: Greg Kroah-Hartman Cc: Minchan Kim Cc: [4.2+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/block/zram/zram_drv.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 5163c8f918cb..5497f7fc44d0 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1413,8 +1413,14 @@ static ssize_t hot_remove_store(struct class *class, return ret ? ret : count; } +/* + * NOTE: hot_add attribute is not the usual read-only sysfs attribute. In a + * sense that reading from this file does alter the state of your system -- it + * creates a new un-initialized zram device and returns back this device's + * device_id (or an error code if it fails to create a new device). + */ static struct class_attribute zram_control_class_attrs[] = { - __ATTR_RO(hot_add), + __ATTR(hot_add, 0400, hot_add_show, NULL), __ATTR_WO(hot_remove), __ATTR_NULL, }; -- cgit v1.2.3 From b67d0dd7d0dc9e456825447bbeb935d8ef43ea7c Mon Sep 17 00:00:00 2001 From: 추지호 Date: Thu, 8 Dec 2016 12:01:13 +0000 Subject: can: peak: fix bad memory access and free sequence Fix for bad memory access while disconnecting. netdev is freed before private data free, and dev is accessed after freeing netdev. This makes a slub problem, and it raise kernel oops with slub debugger config. Signed-off-by: Jiho Chu Cc: linux-stable Signed-off-by: Marc Kleine-Budde --- drivers/net/can/usb/peak_usb/pcan_usb_core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c index f3141ca56bc3..0b0302af3bd2 100644 --- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c +++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c @@ -870,23 +870,25 @@ lbl_free_candev: static void peak_usb_disconnect(struct usb_interface *intf) { struct peak_usb_device *dev; + struct peak_usb_device *dev_prev_siblings; /* unregister as many netdev devices as siblings */ - for (dev = usb_get_intfdata(intf); dev; dev = dev->prev_siblings) { + for (dev = usb_get_intfdata(intf); dev; dev = dev_prev_siblings) { struct net_device *netdev = dev->netdev; char name[IFNAMSIZ]; + dev_prev_siblings = dev->prev_siblings; dev->state &= ~PCAN_USB_STATE_CONNECTED; strncpy(name, netdev->name, IFNAMSIZ); unregister_netdev(netdev); - free_candev(netdev); kfree(dev->cmd_buf); dev->next_siblings = NULL; if (dev->adapter->dev_free) dev->adapter->dev_free(dev); + free_candev(netdev); dev_info(&intf->dev, "%s removed\n", name); } -- cgit v1.2.3 From 7b8076ce8a00d553ae9d3b7eb5f0cc3e63cb16f1 Mon Sep 17 00:00:00 2001 From: Daniele Palmas Date: Wed, 7 Dec 2016 14:07:48 +0100 Subject: NET: usb: cdc_mbim: add quirk for supporting Telit LE922A MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Telit LE922A MBIM based composition does not work properly with altsetting toggle done in cdc_ncm_bind_common. This patch adds CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE quirk to avoid this procedure that, instead, is mandatory for other modems. Signed-off-by: Daniele Palmas Reviewed-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/cdc_mbim.c | 21 +++++++++++++++++++++ drivers/net/usb/cdc_ncm.c | 14 +++++++++----- include/linux/usb/cdc_ncm.h | 3 ++- 3 files changed, 32 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c index 96a5028621c8..3a98f3762a4c 100644 --- a/drivers/net/usb/cdc_mbim.c +++ b/drivers/net/usb/cdc_mbim.c @@ -602,6 +602,21 @@ static const struct driver_info cdc_mbim_info_ndp_to_end = { .data = CDC_NCM_FLAG_NDP_TO_END, }; +/* Some modems (e.g. Telit LE922A6) do not work properly with altsetting + * toggle done in cdc_ncm_bind_common. CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE + * flag is used to avoid this procedure. + */ +static const struct driver_info cdc_mbim_info_avoid_altsetting_toggle = { + .description = "CDC MBIM", + .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN, + .bind = cdc_mbim_bind, + .unbind = cdc_mbim_unbind, + .manage_power = cdc_mbim_manage_power, + .rx_fixup = cdc_mbim_rx_fixup, + .tx_fixup = cdc_mbim_tx_fixup, + .data = CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE, +}; + static const struct usb_device_id mbim_devs[] = { /* This duplicate NCM entry is intentional. MBIM devices can * be disguised as NCM by default, and this is necessary to @@ -626,6 +641,12 @@ static const struct usb_device_id mbim_devs[] = { { USB_VENDOR_AND_INTERFACE_INFO(0x12d1, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE), .driver_info = (unsigned long)&cdc_mbim_info_ndp_to_end, }, + + /* Telit LE922A6 in MBIM composition */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1bc7, 0x1041, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE), + .driver_info = (unsigned long)&cdc_mbim_info_avoid_altsetting_toggle, + }, + /* default entry */ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE), .driver_info = (unsigned long)&cdc_mbim_info_zlp, diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c index 877c9516e781..afbfc0f656f3 100644 --- a/drivers/net/usb/cdc_ncm.c +++ b/drivers/net/usb/cdc_ncm.c @@ -839,11 +839,18 @@ int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_ iface_no = ctx->data->cur_altsetting->desc.bInterfaceNumber; + /* Device-specific flags */ + ctx->drvflags = drvflags; + /* Reset data interface. Some devices will not reset properly * unless they are configured first. Toggle the altsetting to - * force a reset + * force a reset. + * Some other devices do not work properly with this procedure + * that can be avoided using quirk CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE */ - usb_set_interface(dev->udev, iface_no, data_altsetting); + if (!(ctx->drvflags & CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE)) + usb_set_interface(dev->udev, iface_no, data_altsetting); + temp = usb_set_interface(dev->udev, iface_no, 0); if (temp) { dev_dbg(&intf->dev, "set interface failed\n"); @@ -890,9 +897,6 @@ int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_ /* finish setting up the device specific data */ cdc_ncm_setup(dev); - /* Device-specific flags */ - ctx->drvflags = drvflags; - /* Allocate the delayed NDP if needed. */ if (ctx->drvflags & CDC_NCM_FLAG_NDP_TO_END) { ctx->delayed_ndp16 = kzalloc(ctx->max_ndp_size, GFP_KERNEL); diff --git a/include/linux/usb/cdc_ncm.h b/include/linux/usb/cdc_ncm.h index 3a375d07d0dc..00d232406f18 100644 --- a/include/linux/usb/cdc_ncm.h +++ b/include/linux/usb/cdc_ncm.h @@ -81,7 +81,8 @@ #define CDC_NCM_TIMER_INTERVAL_MAX (U32_MAX / NSEC_PER_USEC) /* Driver flags */ -#define CDC_NCM_FLAG_NDP_TO_END 0x02 /* NDP is placed at end of frame */ +#define CDC_NCM_FLAG_NDP_TO_END 0x02 /* NDP is placed at end of frame */ +#define CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE 0x04 /* Avoid altsetting toggle during init */ #define cdc_ncm_comm_intf_is_mbim(x) ((x)->desc.bInterfaceSubClass == USB_CDC_SUBCLASS_MBIM && \ (x)->desc.bInterfaceProtocol == USB_CDC_PROTO_NONE) -- cgit v1.2.3 From 93a97c50cbf1c007caf12db5cc23e0d5b9c8473c Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 7 Dec 2016 14:22:03 +0300 Subject: ser_gigaset: return -ENOMEM on error instead of success If we can't allocate the resources in gigaset_initdriver() then we should return -ENOMEM instead of zero. Fixes: 2869b23e4b95 ("[PATCH] drivers/isdn/gigaset: new M101 driver (v2)") Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- drivers/isdn/gigaset/ser-gigaset.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/isdn/gigaset/ser-gigaset.c b/drivers/isdn/gigaset/ser-gigaset.c index d1f8ab915b15..b90776ef56ec 100644 --- a/drivers/isdn/gigaset/ser-gigaset.c +++ b/drivers/isdn/gigaset/ser-gigaset.c @@ -755,8 +755,10 @@ static int __init ser_gigaset_init(void) driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS, GIGASET_MODULENAME, GIGASET_DEVNAME, &ops, THIS_MODULE); - if (!driver) + if (!driver) { + rc = -ENOMEM; goto error; + } rc = tty_register_ldisc(N_GIGASET_M101, &gigaset_ldisc); if (rc != 0) { -- cgit v1.2.3 From 1a31cc86ef3ce9d873a713f422c34b47a188caec Mon Sep 17 00:00:00 2001 From: Gao Feng Date: Thu, 8 Dec 2016 11:16:58 +0800 Subject: driver: ipvlan: Unlink the upper dev when ipvlan_link_new failed When netdev_upper_dev_unlink failed in ipvlan_link_new, need to unlink the ipvlan dev with upper dev. Signed-off-by: Gao Feng Acked-by: Mahesh Bandewar Signed-off-by: David S. Miller --- drivers/net/ipvlan/ipvlan_main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c index 0fef17874d50..dfbc4ef6d507 100644 --- a/drivers/net/ipvlan/ipvlan_main.c +++ b/drivers/net/ipvlan/ipvlan_main.c @@ -546,13 +546,15 @@ static int ipvlan_link_new(struct net *src_net, struct net_device *dev, } err = ipvlan_set_port_mode(port, mode); if (err) { - goto unregister_netdev; + goto unlink_netdev; } list_add_tail_rcu(&ipvlan->pnode, &port->ipvlans); netif_stacked_transfer_operstate(phy_dev, dev); return 0; +unlink_netdev: + netdev_upper_dev_unlink(phy_dev, dev); unregister_netdev: unregister_netdevice(dev); destroy_ipvlan_port: -- cgit v1.2.3 From d2a007ab191646d41553ffb6624cef1957e899ae Mon Sep 17 00:00:00 2001 From: Arjun V Date: Thu, 8 Dec 2016 18:09:23 +0530 Subject: cxgb4/cxgb4vf: Assign netdev->dev_port with port ID Added missing dev_port assignment in cxgb4vf driver. Also made dev_port assignment of cxgb4 in sync with cxgb4vf driver. Signed-off-by: Casey Leedom Signed-off-by: Arjun V Signed-off-by: Hariprasad Shenai Signed-off-by: Ganesh Goudar Signed-off-by: David S. Miller --- drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 1 + drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 1 - drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c | 1 + 3 files changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c index 57eb4e1345cb..19dc9e25aa72 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -4931,6 +4931,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent) */ for_each_port(adapter, i) { pi = adap2pinfo(adapter, i); + adapter->port[i]->dev_port = pi->lport; netif_set_real_num_tx_queues(adapter->port[i], pi->nqsets); netif_set_real_num_rx_queues(adapter->port[i], pi->nqsets); diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c index 20dec85da63d..e8139514d32c 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c @@ -7851,7 +7851,6 @@ int t4_port_init(struct adapter *adap, int mbox, int pf, int vf) return ret; memcpy(adap->port[i]->dev_addr, addr, ETH_ALEN); - adap->port[i]->dev_port = j; j++; } return 0; diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c b/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c index 100b2cc064a3..a37481c04a87 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c @@ -2969,6 +2969,7 @@ static int cxgb4vf_pci_probe(struct pci_dev *pdev, netdev->netdev_ops = &cxgb4vf_netdev_ops; netdev->ethtool_ops = &cxgb4vf_ethtool_ops; + netdev->dev_port = pi->port_id; /* * Initialize the hardware/software state for the port. -- cgit v1.2.3 From c4587631c7bad47c045e081d1553cd73a23be59a Mon Sep 17 00:00:00 2001 From: Peng Tao Date: Fri, 9 Dec 2016 01:10:46 +0800 Subject: vhost-vsock: fix orphan connection reset local_addr.svm_cid is host cid. We should check guest cid instead, which is remote_addr.svm_cid. Otherwise we end up resetting all connections to all guests. Cc: stable@vger.kernel.org [4.8+] Reviewed-by: Stefan Hajnoczi Signed-off-by: Peng Tao Signed-off-by: David S. Miller --- drivers/vhost/vsock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c index e3b30ea9ece5..a504e2e003da 100644 --- a/drivers/vhost/vsock.c +++ b/drivers/vhost/vsock.c @@ -506,7 +506,7 @@ static void vhost_vsock_reset_orphans(struct sock *sk) * executing. */ - if (!vhost_vsock_get(vsk->local_addr.svm_cid)) { + if (!vhost_vsock_get(vsk->remote_addr.svm_cid)) { sock_set_flag(sk, SOCK_DONE); vsk->peer_shutdown = SHUTDOWN_MASK; sk->sk_state = SS_UNCONNECTED; -- cgit v1.2.3 From 9cecb138e54c54989375bceeb448affcdf03497f Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Thu, 8 Dec 2016 11:41:24 -0800 Subject: net: ethernet: lantiq_etop: Call SET_NETDEV_DEV() The Lantiq Etop driver calls into PHYLIB which now checks for net_device->dev.parent, so make sure we do set it before calling into any MDIO/PHYLIB related function. Fixes: ec988ad78ed6 ("phy: Don't increment MDIO bus refcount unless it's a different owner") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/lantiq_etop.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/net/ethernet/lantiq_etop.c b/drivers/net/ethernet/lantiq_etop.c index 91e09d68b7e2..a167fd7ee13e 100644 --- a/drivers/net/ethernet/lantiq_etop.c +++ b/drivers/net/ethernet/lantiq_etop.c @@ -704,6 +704,7 @@ ltq_etop_probe(struct platform_device *pdev) priv->pldata = dev_get_platdata(&pdev->dev); priv->netdev = dev; spin_lock_init(&priv->lock); + SET_NETDEV_DEV(dev, &pdev->dev); for (i = 0; i < MAX_DMA_CHAN; i++) { if (IS_TX(i)) -- cgit v1.2.3 From 5579f28cc8ba8a3b489cb042fcb30d331236c3bb Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Thu, 8 Dec 2016 11:41:25 -0800 Subject: net: ethernet: cpmac: Call SET_NETDEV_DEV() The TI CPMAC driver calls into PHYLIB which now checks for net_device->dev.parent, so make sure we do set it before calling into any MDIO/PHYLIB related function. Fixes: ec988ad78ed6 ("phy: Don't increment MDIO bus refcount unless it's a different owner") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpmac.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/net/ethernet/ti/cpmac.c b/drivers/net/ethernet/ti/cpmac.c index fa0cfda24fd9..28097be2ff28 100644 --- a/drivers/net/ethernet/ti/cpmac.c +++ b/drivers/net/ethernet/ti/cpmac.c @@ -1113,6 +1113,7 @@ static int cpmac_probe(struct platform_device *pdev) if (!dev) return -ENOMEM; + SET_NETDEV_DEV(dev, &pdev->dev); platform_set_drvdata(pdev, dev); priv = netdev_priv(dev); -- cgit v1.2.3 From 7b5967389f5a8dfb9d32843830f5e2717e20995d Mon Sep 17 00:00:00 2001 From: Thomas Falcon Date: Thu, 8 Dec 2016 16:40:03 -0600 Subject: ibmveth: set correct gso_size and gso_type This patch is based on an earlier one submitted by Jon Maxwell with the following commit message: "We recently encountered a bug where a few customers using ibmveth on the same LPAR hit an issue where a TCP session hung when large receive was enabled. Closer analysis revealed that the session was stuck because the one side was advertising a zero window repeatedly. We narrowed this down to the fact the ibmveth driver did not set gso_size which is translated by TCP into the MSS later up the stack. The MSS is used to calculate the TCP window size and as that was abnormally large, it was calculating a zero window, even although the sockets receive buffer was completely empty." We rely on the Virtual I/O Server partition in a pseries environment to provide the MSS through the TCP header checksum field. The stipulation is that users should not disable checksum offloading if rx packet aggregation is enabled through VIOS. Some firmware offerings provide the MSS in the RX buffer. This is signalled by a bit in the RX queue descriptor. Reviewed-by: Brian King Reviewed-by: Pradeep Satyanarayana Reviewed-by: Marcelo Ricardo Leitner Reviewed-by: Jonathan Maxwell Reviewed-by: David Dai Signed-off-by: Thomas Falcon Signed-off-by: David S. Miller --- drivers/net/ethernet/ibm/ibmveth.c | 65 ++++++++++++++++++++++++++++++++++++-- drivers/net/ethernet/ibm/ibmveth.h | 1 + 2 files changed, 64 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c index ebe60719e489..a36022ba4e42 100644 --- a/drivers/net/ethernet/ibm/ibmveth.c +++ b/drivers/net/ethernet/ibm/ibmveth.c @@ -58,7 +58,7 @@ static struct kobj_type ktype_veth_pool; static const char ibmveth_driver_name[] = "ibmveth"; static const char ibmveth_driver_string[] = "IBM Power Virtual Ethernet Driver"; -#define ibmveth_driver_version "1.05" +#define ibmveth_driver_version "1.06" MODULE_AUTHOR("Santiago Leon "); MODULE_DESCRIPTION("IBM Power Virtual Ethernet Driver"); @@ -137,6 +137,11 @@ static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter) return ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_OFF_MASK; } +static inline int ibmveth_rxq_large_packet(struct ibmveth_adapter *adapter) +{ + return ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_LRG_PKT; +} + static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter) { return be32_to_cpu(adapter->rx_queue.queue_addr[adapter->rx_queue.index].length); @@ -1174,6 +1179,45 @@ map_failed: goto retry_bounce; } +static void ibmveth_rx_mss_helper(struct sk_buff *skb, u16 mss, int lrg_pkt) +{ + int offset = 0; + + /* only TCP packets will be aggregated */ + if (skb->protocol == htons(ETH_P_IP)) { + struct iphdr *iph = (struct iphdr *)skb->data; + + if (iph->protocol == IPPROTO_TCP) { + offset = iph->ihl * 4; + skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; + } else { + return; + } + } else if (skb->protocol == htons(ETH_P_IPV6)) { + struct ipv6hdr *iph6 = (struct ipv6hdr *)skb->data; + + if (iph6->nexthdr == IPPROTO_TCP) { + offset = sizeof(struct ipv6hdr); + skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; + } else { + return; + } + } else { + return; + } + /* if mss is not set through Large Packet bit/mss in rx buffer, + * expect that the mss will be written to the tcp header checksum. + */ + if (lrg_pkt) { + skb_shinfo(skb)->gso_size = mss; + } else if (offset) { + struct tcphdr *tcph = (struct tcphdr *)(skb->data + offset); + + skb_shinfo(skb)->gso_size = ntohs(tcph->check); + tcph->check = 0; + } +} + static int ibmveth_poll(struct napi_struct *napi, int budget) { struct ibmveth_adapter *adapter = @@ -1182,6 +1226,7 @@ static int ibmveth_poll(struct napi_struct *napi, int budget) int frames_processed = 0; unsigned long lpar_rc; struct iphdr *iph; + u16 mss = 0; restart_poll: while (frames_processed < budget) { @@ -1199,9 +1244,21 @@ restart_poll: int length = ibmveth_rxq_frame_length(adapter); int offset = ibmveth_rxq_frame_offset(adapter); int csum_good = ibmveth_rxq_csum_good(adapter); + int lrg_pkt = ibmveth_rxq_large_packet(adapter); skb = ibmveth_rxq_get_buffer(adapter); + /* if the large packet bit is set in the rx queue + * descriptor, the mss will be written by PHYP eight + * bytes from the start of the rx buffer, which is + * skb->data at this stage + */ + if (lrg_pkt) { + __be64 *rxmss = (__be64 *)(skb->data + 8); + + mss = (u16)be64_to_cpu(*rxmss); + } + new_skb = NULL; if (length < rx_copybreak) new_skb = netdev_alloc_skb(netdev, length); @@ -1235,11 +1292,15 @@ restart_poll: if (iph->check == 0xffff) { iph->check = 0; iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); - adapter->rx_large_packets++; } } } + if (length > netdev->mtu + ETH_HLEN) { + ibmveth_rx_mss_helper(skb, mss, lrg_pkt); + adapter->rx_large_packets++; + } + napi_gro_receive(napi, skb); /* send it up */ netdev->stats.rx_packets++; diff --git a/drivers/net/ethernet/ibm/ibmveth.h b/drivers/net/ethernet/ibm/ibmveth.h index 4eade67fe30c..7acda04d034e 100644 --- a/drivers/net/ethernet/ibm/ibmveth.h +++ b/drivers/net/ethernet/ibm/ibmveth.h @@ -209,6 +209,7 @@ struct ibmveth_rx_q_entry { #define IBMVETH_RXQ_TOGGLE 0x80000000 #define IBMVETH_RXQ_TOGGLE_SHIFT 31 #define IBMVETH_RXQ_VALID 0x40000000 +#define IBMVETH_RXQ_LRG_PKT 0x04000000 #define IBMVETH_RXQ_NO_CSUM 0x02000000 #define IBMVETH_RXQ_CSUM_GOOD 0x01000000 #define IBMVETH_RXQ_OFF_MASK 0x0000FFFF -- cgit v1.2.3 From ab4e4c07aca7b33f8d00c5d6b083a564660ca8a5 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 9 Dec 2016 14:18:00 +0100 Subject: net: smsc911x: back out silently on probe deferrals When trying to get a regulator we may get deferred and we see this noise: smsc911x 1b800000.ethernet-ebi2 (unnamed net_device) (uninitialized): couldn't get regulators -517 Then the driver continues anyway. Which means that the regulator may not be properly retrieved and reference counted, and may be switched off in case noone else is using it. Fix this by returning silently on deferred probe and let the system work it out. Cc: Jeremy Linton Signed-off-by: Linus Walleij Signed-off-by: David S. Miller --- drivers/net/ethernet/smsc/smsc911x.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c index e9b8579e6241..8b0016a785c0 100644 --- a/drivers/net/ethernet/smsc/smsc911x.c +++ b/drivers/net/ethernet/smsc/smsc911x.c @@ -438,9 +438,16 @@ static int smsc911x_request_resources(struct platform_device *pdev) ret = regulator_bulk_get(&pdev->dev, ARRAY_SIZE(pdata->supplies), pdata->supplies); - if (ret) + if (ret) { + /* + * Retry on deferrals, else just report the error + * and try to continue. + */ + if (ret == -EPROBE_DEFER) + return ret; netdev_err(ndev, "couldn't get regulators %d\n", ret); + } /* Request optional RESET GPIO */ pdata->reset_gpiod = devm_gpiod_get_optional(&pdev->dev, -- cgit v1.2.3 From d33695fbfab73a4a6550fa5c2d0bacc68d7c5901 Mon Sep 17 00:00:00 2001 From: Christopher Covington Date: Fri, 9 Dec 2016 16:53:05 -0500 Subject: net: mlx5: Fix Kconfig help text Since the following commit, Infiniband and Ethernet have not been mutually exclusive. Fixes: 4aa17b28 mlx5: Enable mutual support for IB and Ethernet Signed-off-by: Christopher Covington Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx5/core/Kconfig | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Kconfig b/drivers/net/ethernet/mellanox/mlx5/core/Kconfig index aae46884bf93..521cfdb7d11e 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/Kconfig +++ b/drivers/net/ethernet/mellanox/mlx5/core/Kconfig @@ -18,8 +18,6 @@ config MLX5_CORE_EN default n ---help--- Ethernet support in Mellanox Technologies ConnectX-4 NIC. - Ethernet and Infiniband support in ConnectX-4 are currently mutually - exclusive. config MLX5_CORE_EN_DCB bool "Data Center Bridging (DCB) Support" -- cgit v1.2.3