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sock: annotate data-races around prot->memory_pressure

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[ 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: 4d93df0abd ("[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>
This commit is contained in:
Eric Dumazet
2023-08-18 01:51:32 +00:00
committed by Greg Kroah-Hartman
parent 005b6572d0
commit 403cc3e625
2 changed files with 5 additions and 4 deletions
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2
net/sctp/socket.c
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@@ -97,7 +97,7 @@ 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);
}