diff options
| author | Eric Dumazet <edumazet@google.com> | 2013-04-24 18:34:55 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-04-25 00:34:24 -0400 |
| commit | 093162553c33e9479283e107b4431378271c735d (patch) | |
| tree | 39c82b25b7402f6645b7fec4270bcac0f49e4101 | |
| parent | d2cb6ce7306997c753976b65bf81495e1efe7074 (diff) | |
tcp: force a dst refcount when prequeue packet
Before escaping RCU protected section and adding packet into
prequeue, make sure the dst is refcounted.
Reported-by: Mike Galbraith <bitbucket@online.de>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/tcp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index cf0694d4ad6..a34548041c1 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1049,6 +1049,7 @@ static inline bool tcp_prequeue(struct sock *sk, struct sk_buff *skb) skb_queue_len(&tp->ucopy.prequeue) == 0) return false; + skb_dst_force(skb); __skb_queue_tail(&tp->ucopy.prequeue, skb); tp->ucopy.memory += skb->truesize; if (tp->ucopy.memory > sk->sk_rcvbuf) { |