net: add missing READ_ONCE(sk->sk_rcvbuf) annotation

[ Upstream commit b4b553253091cafe9ec38994acf42795e073bef5 ]

In a prior commit, I forgot to change sk_getsockopt()
when reading sk->sk_rcvbuf locklessly.

Fixes: ebb3b78db7bf ("tcp: annotate sk->sk_rcvbuf lockless reads")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/net/core/sock.c b/net/core/sock.c
index 04306ccdf908197974af08d56b09ec3ca73a197c..1a2ec2c4cfe2646f560b5223d710a7bf0586c2a3 100644 (file)
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1628,7 +1628,7 @@ int sk_getsockopt(struct sock *sk, int level, int optname,
                break;
 
        case SO_RCVBUF:
-               v.val = sk->sk_rcvbuf;
+               v.val = READ_ONCE(sk->sk_rcvbuf);
                break;
 
        case SO_REUSEADDR: