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authorLinus Torvalds <torvalds@linux-foundation.org>2017-10-21 22:44:48 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2017-10-21 22:44:48 -0400
commitb5ac3beb5a9f0ef0ea64cd85faf94c0dc4de0e42 (patch)
tree70a8d684c18f71aa4be2d67896362f864afb4d57 /mm
parente5f468b3f23313994c5e6c356135f9b0d76bcb94 (diff)
parent8d5f4b07174976c55a5f5d6967777373c6826944 (diff)
downloadlinux-b5ac3beb5a9f0ef0ea64cd85faf94c0dc4de0e42.tar.bz2
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller: "A little more than usual this time around. Been travelling, so that is part of it. Anyways, here are the highlights: 1) Deal with memcontrol races wrt. listener dismantle, from Eric Dumazet. 2) Handle page allocation failures properly in nfp driver, from Jaku Kicinski. 3) Fix memory leaks in macsec, from Sabrina Dubroca. 4) Fix crashes in pppol2tp_session_ioctl(), from Guillaume Nault. 5) Several fixes in bnxt_en driver, including preventing potential NVRAM parameter corruption from Michael Chan. 6) Fix for KRACK attacks in wireless, from Johannes Berg. 7) rtnetlink event generation fixes from Xin Long. 8) Deadlock in mlxsw driver, from Ido Schimmel. 9) Disallow arithmetic operations on context pointers in bpf, from Jakub Kicinski. 10) Missing sock_owned_by_user() check in sctp_icmp_redirect(), from Xin Long. 11) Only TCP is supported for sockmap, make that explicit with a check, from John Fastabend. 12) Fix IP options state races in DCCP and TCP, from Eric Dumazet. 13) Fix panic in packet_getsockopt(), also from Eric Dumazet. 14) Add missing locked in hv_sock layer, from Dexuan Cui. 15) Various aquantia bug fixes, including several statistics handling cures. From Igor Russkikh et al. 16) Fix arithmetic overflow in devmap code, from John Fastabend. 17) Fix busted socket memory accounting when we get a fault in the tcp zero copy paths. From Willem de Bruijn. 18) Don't leave opt->tot_len uninitialized in ipv6, from Eric Dumazet" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (106 commits) stmmac: Don't access tx_q->dirty_tx before netif_tx_lock ipv6: flowlabel: do not leave opt->tot_len with garbage of_mdio: Fix broken PHY IRQ in case of probe deferral textsearch: fix typos in library helpers rxrpc: Don't release call mutex on error pointer net: stmmac: Prevent infinite loop in get_rx_timestamp_status() net: stmmac: Fix stmmac_get_rx_hwtstamp() net: stmmac: Add missing call to dev_kfree_skb() mlxsw: spectrum_router: Configure TIGCR on init mlxsw: reg: Add Tunneling IPinIP General Configuration Register net: ethtool: remove error check for legacy setting transceiver type soreuseport: fix initialization race net: bridge: fix returning of vlan range op errors sock: correct sk_wmem_queued accounting on efault in tcp zerocopy bpf: add test cases to bpf selftests to cover all access tests bpf: fix pattern matches for direct packet access bpf: fix off by one for range markings with L{T, E} patterns bpf: devmap fix arithmetic overflow in bitmap_size calculation net: aquantia: Bad udp rate on default interrupt coalescing net: aquantia: Enable coalescing management via ethtool interface ...
Diffstat (limited to 'mm')
-rw-r--r--mm/memcontrol.c15
-rw-r--r--mm/percpu.c15
2 files changed, 10 insertions, 20 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index d5f3a62887cf..661f046ad318 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5828,21 +5828,6 @@ void mem_cgroup_sk_alloc(struct sock *sk)
if (!mem_cgroup_sockets_enabled)
return;
- /*
- * Socket cloning can throw us here with sk_memcg already
- * filled. It won't however, necessarily happen from
- * process context. So the test for root memcg given
- * the current task's memcg won't help us in this case.
- *
- * Respecting the original socket's memcg is a better
- * decision in this case.
- */
- if (sk->sk_memcg) {
- BUG_ON(mem_cgroup_is_root(sk->sk_memcg));
- css_get(&sk->sk_memcg->css);
- return;
- }
-
rcu_read_lock();
memcg = mem_cgroup_from_task(current);
if (memcg == root_mem_cgroup)
diff --git a/mm/percpu.c b/mm/percpu.c
index aa121cef76de..a0e0c82c1e4c 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1329,7 +1329,9 @@ static struct pcpu_chunk *pcpu_chunk_addr_search(void *addr)
* @gfp: allocation flags
*
* Allocate percpu area of @size bytes aligned at @align. If @gfp doesn't
- * contain %GFP_KERNEL, the allocation is atomic.
+ * contain %GFP_KERNEL, the allocation is atomic. If @gfp has __GFP_NOWARN
+ * then no warning will be triggered on invalid or failed allocation
+ * requests.
*
* RETURNS:
* Percpu pointer to the allocated area on success, NULL on failure.
@@ -1337,10 +1339,11 @@ static struct pcpu_chunk *pcpu_chunk_addr_search(void *addr)
static void __percpu *pcpu_alloc(size_t size, size_t align, bool reserved,
gfp_t gfp)
{
+ bool is_atomic = (gfp & GFP_KERNEL) != GFP_KERNEL;
+ bool do_warn = !(gfp & __GFP_NOWARN);
static int warn_limit = 10;
struct pcpu_chunk *chunk;
const char *err;
- bool is_atomic = (gfp & GFP_KERNEL) != GFP_KERNEL;
int slot, off, cpu, ret;
unsigned long flags;
void __percpu *ptr;
@@ -1361,7 +1364,7 @@ static void __percpu *pcpu_alloc(size_t size, size_t align, bool reserved,
if (unlikely(!size || size > PCPU_MIN_UNIT_SIZE || align > PAGE_SIZE ||
!is_power_of_2(align))) {
- WARN(true, "illegal size (%zu) or align (%zu) for percpu allocation\n",
+ WARN(do_warn, "illegal size (%zu) or align (%zu) for percpu allocation\n",
size, align);
return NULL;
}
@@ -1482,7 +1485,7 @@ fail_unlock:
fail:
trace_percpu_alloc_percpu_fail(reserved, is_atomic, size, align);
- if (!is_atomic && warn_limit) {
+ if (!is_atomic && do_warn && warn_limit) {
pr_warn("allocation failed, size=%zu align=%zu atomic=%d, %s\n",
size, align, is_atomic, err);
dump_stack();
@@ -1507,7 +1510,9 @@ fail:
*
* Allocate zero-filled percpu area of @size bytes aligned at @align. If
* @gfp doesn't contain %GFP_KERNEL, the allocation doesn't block and can
- * be called from any context but is a lot more likely to fail.
+ * be called from any context but is a lot more likely to fail. If @gfp
+ * has __GFP_NOWARN then no warning will be triggered on invalid or failed
+ * allocation requests.
*
* RETURNS:
* Percpu pointer to the allocated area on success, NULL on failure.