diff options
| author | Eric Dumazet <edumazet@google.com> | 2013-04-24 18:34:55 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-19 10:04:42 -0700 |
| commit | a0464b18acc3f17ff86aa25df34c5066a21c8291 (patch) | |
| tree | 0ae123ffbc405d31df28aefd767bfb863ee404c5 /include/net | |
| parent | 875cfc6271a37f35f6334c26184b16eb70625929 (diff) | |
tcp: force a dst refcount when prequeue packet
[ Upstream commit 093162553c33e9479283e107b4431378271c735d ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/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 b28a49f48a0..4881cb63999 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) { |