From: Eric Dumazet Before escaping RCU protected section and adding packet into prequeue, make sure the dst is refcounted. Cc: stable-rt@vger.kernel.org Reported-by: Mike Galbraith Signed-off-by: Eric Dumazet Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Steven Rostedt --- include/net/tcp.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/net/tcp.h b/include/net/tcp.h index 0768715..fe46019 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -931,6 +931,7 @@ static inline int tcp_prequeue(struct sock *sk, struct sk_buff *skb) if (sysctl_tcp_low_latency || !tp->ucopy.task) return 0; + skb_dst_force(skb); __skb_queue_tail(&tp->ucopy.prequeue, skb); tp->ucopy.memory += skb->truesize; if (tp->ucopy.memory > sk->sk_rcvbuf) { -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/