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net: add missing data-race annotations around sk->sk_peek_off

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[ Upstream commit 11695c6e96 ]

sk_getsockopt() runs locklessly, thus we need to annotate the read
of sk->sk_peek_off.

While we are at it, add corresponding annotations to sk_set_peek_off()
and unix_set_peek_off().

Fixes: b9bb53f383 ("sock: convert sk_peek_offset functions to WRITE_ONCE")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Eric Dumazet 2023-07-28 15:03:16 +00:00 • committed by Justin Hammond
parent 8d74fcb7cd
commit 91310a0651
2 changed files with 3 additions and 3 deletions
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2
net/unix/af_unix.c
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@ -717,7 +717,7 @@ static int unix_set_peek_off(struct sock *sk, int val)
if (mutex_lock_interruptible(&u->iolock))
return -EINTR;
sk->sk_peek_off = val;
WRITE_ONCE(sk->sk_peek_off, val);
mutex_unlock(&u->iolock);
return 0;