From 4b5bda4502dd1999b0a8786dc43863ee59e21292 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <edumazet@google.com>
Date: Fri, 28 Jul 2023 15:03:13 +0000
Subject: [PATCH] net: add missing READ_ONCE(sk->sk_sndbuf) annotation

[ 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 aed5d09a41c4..c5dfeb6d4fec 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1626,7 +1626,7 @@ 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: