[PATCH 6.1 039/127] net: add missing READ_ONCE(sk->sk_sndbuf) annotation

Greg Kroah-Hartman
2023-08-09T10:54:23Z

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 74bc084327c643499474ba75df485607da37dd6e ]

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

Fixes: e292f05e0df7 ("tcp: annotate sk->sk_sndbuf 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>
---
net/core/sock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/sock.c b/net/core/sock.c
index 1b1fe67b94d4f..04306ccdf9081 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1624,7 +1624,7 @@ int sk_getsockopt(struct sock *sk, int level, int optname,
break;

case SO_SNDBUF:
- v.val = sk->sk_sndbuf;
+ v.val = READ_ONCE(sk->sk_sndbuf);
break;

case SO_RCVBUF:
--
2.40.1