tcp: annotate tp->copied_seq lockless reads

[linux-2.6-block.git] / net / ipv4 / tcp_diag.c

diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c
index 81a8221d650a94be53d17354c60ddd0c655eaccf..66273c8a55c247ca133d8d9cb69c79e6fc3d4dd0 100644 (file)
--- a/net/ipv4/tcp_diag.c
+++ b/net/ipv4/tcp_diag.c
@@ -26,7 +26,8 @@ static void tcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
        } else if (sk->sk_type == SOCK_STREAM) {
                const struct tcp_sock *tp = tcp_sk(sk);
 
-               r->idiag_rqueue = max_t(int, tp->rcv_nxt - tp->copied_seq, 0);
+               r->idiag_rqueue = max_t(int, READ_ONCE(tp->rcv_nxt) -
+                                            READ_ONCE(tp->copied_seq), 0);
                r->idiag_wqueue = tp->write_seq - tp->snd_una;
        }
        if (info)