From: Eric Dumazet <eduma...@google.com>
Before escaping RCU protected section and adding packet into
prequeue, make sure the dst is refcounted.
Cc: stable...@vger.kernel.org
Reported-by: Mike Galbraith <bitbuc...@online.de>
Signed-off-by: Eric Dumazet <eduma...@google.com>
Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de>
Signed-off-by: Steven Rostedt <rost...@goodmis.org>
---
include/net/tcp.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/net/tcp.h b/include/net/tcp.h
index b28a49f..4881cb6 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -902,6 +902,7 @@ 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
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