diff --git a/include/net/sock.h b/include/net/sock.h index f68184b8c0aa..9199ab7ab2da 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2232,8 +2232,13 @@ struct sk_buff *sock_dequeue_err_skb(struct sock *sk); static inline int sock_error(struct sock *sk) { int err; - if (likely(!sk->sk_err)) + + /* Avoid an atomic operation for the common case. + * This is racy since another cpu/thread can change sk_err under us. + */ + if (likely(data_race(!sk->sk_err))) return 0; + err = xchg(&sk->sk_err, 0); return -err; }