[PATCH v2 net 08/15] af_unix: Annotate data-race of sk->sk_state in unix_stream_read_skb().

[Kuniyuki Iwashima <kuniyu@amazon.com>]

unix_stream_read_skb() is called from sk->sk_data_ready() context
where unix_state_lock() is not held.

Let's use READ_ONCE() there.

Fixes: 77462de14a43 ("af_unix: Add read_sock for stream socket types")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
---
 net/unix/af_unix.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 4ef9c21783a5..e7b74207aa3b 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -2659,7 +2659,7 @@ static struct sk_buff *manage_oob(struct sk_buff *skb, struct sock *sk,
 
 static int unix_stream_read_skb(struct sock *sk, skb_read_actor_t recv_actor)
 {
-	if (unlikely(sk->sk_state != TCP_ESTABLISHED))
+	if (unlikely(READ_ONCE(sk->sk_state) != TCP_ESTABLISHED))
 		return -ENOTCONN;
 
 	return unix_read_skb(sk, recv_actor);
-- 
2.30.2