From 288efe8606b62d0753ba6722b36ef241877251fd Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 5 Nov 2019 14:11:53 -0800 Subject: net: annotate lockless accesses to sk->sk_ack_backlog sk->sk_ack_backlog can be read without any lock being held. We need to use READ_ONCE()/WRITE_ONCE() to avoid load/store tearing and/or potential KCSAN warnings. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv6/tcp_ipv6.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/ipv6') diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 4804b6dc5e65..81f51335e326 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1891,7 +1891,7 @@ static void get_tcp6_sock(struct seq_file *seq, struct sock *sp, int i) state = inet_sk_state_load(sp); if (state == TCP_LISTEN) - rx_queue = sp->sk_ack_backlog; + rx_queue = READ_ONCE(sp->sk_ack_backlog); else /* Because we don't lock the socket, * we might find a transient negative value. -- cgit