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| author | Eric Dumazet <edumazet@google.com> | 2023-08-18 01:51:32 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-30 16:27:23 +0200 |
| commit | 7d6cc69199527397e38264f1d69f45ea5454b563 (patch) | |
| tree | 7f23509b397de3a505e788331b70429e1d0de9af /net | |
| parent | d28ea7acfae761b622710d78091d56e7b3267087 (diff) | |
| download | linux-7d6cc69199527397e38264f1d69f45ea5454b563.tar.gz linux-7d6cc69199527397e38264f1d69f45ea5454b563.tar.bz2 linux-7d6cc69199527397e38264f1d69f45ea5454b563.zip | |
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')
| -rw-r--r-- | net/sctp/socket.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 7cff1a031f76..431b9399a781 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -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); } |