diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-07-28 18:03:16 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-07-29 20:13:41 +0300 |
| commit | 11695c6e966b0ec7ed1d16777d294cef865a5c91 (patch) | |
| tree | b02401c8e049b0cd7d780be6505a27ea1e5e9707 /net | |
| parent | 3c5b4d69c358a9275a8de98f87caf6eda644b086 (diff) | |
| download | linux-11695c6e966b0ec7ed1d16777d294cef865a5c91.tar.xz | |
net: add missing data-race annotations around sk->sk_peek_off
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: b9bb53f3836f ("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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/sock.c | 4 | ||||
| -rw-r--r-- | net/unix/af_unix.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index d831a3df2cef..d57acaee42d4 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1870,7 +1870,7 @@ int sk_getsockopt(struct sock *sk, int level, int optname, if (!sock->ops->set_peek_off) return -EOPNOTSUPP; - v.val = sk->sk_peek_off; + v.val = READ_ONCE(sk->sk_peek_off); break; case SO_NOFCS: v.val = sock_flag(sk, SOCK_NOFCS); @@ -3179,7 +3179,7 @@ EXPORT_SYMBOL(__sk_mem_reclaim); int sk_set_peek_off(struct sock *sk, int val) { - sk->sk_peek_off = val; + WRITE_ONCE(sk->sk_peek_off, val); return 0; } EXPORT_SYMBOL_GPL(sk_set_peek_off); diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 78585217f61a..86930a8ed012 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -790,7 +790,7 @@ 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; |