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authorEric Dumazet2023-08-18 01:51:32 +0000
committerGreg Kroah-Hartman2023-08-30 16:11:00 +0200
commitb516a24f4c07426028baaa55595f50730df512c6 (patch)
treed3291ed1fe2fec7938845c55a465396d3ea46853 /net/sctp
parentcfee17993d1065d7d6553e57d276cb36c2a768d4 (diff)
sock: annotate data-races around prot->memory_pressure
[ Upstream commit 76f33296d2e09f63118db78125c95ef56df438e9 ] *prot->memory_pressure is read/writen locklessly, we need to add proper annotations. A recent commit added a new race, it is time to audit all accesses. Fixes: 2d0c88e84e48 ("sock: Fix misuse of sk_under_memory_pressure()") Fixes: 4d93df0abd50 ("[SCTP]: Rewrite of sctp buffer management code") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Abel Wu <wuyun.abel@bytedance.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Link: https://lore.kernel.org/r/20230818015132.2699348-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/sctp')
-rw-r--r--net/sctp/socket.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index c806d272107a..83656fe03a0e 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -98,7 +98,7 @@ struct percpu_counter sctp_sockets_allocated;
static void sctp_enter_memory_pressure(struct sock *sk)
{
- sctp_memory_pressure = 1;
+ WRITE_ONCE(sctp_memory_pressure, 1);
}