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Message-Id: <20130517213250.045249985@linuxfoundation.org>
Date: Fri, 17 May 2013 14:36:09 -0700
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Mike Galbraith <bitbucket@...ine.de>,
Eric Dumazet <edumazet@...gle.com>,
"David S. Miller" <davem@...emloft.net>
Subject: [ 054/102] tcp: force a dst refcount when prequeue packet
3.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@...gle.com>
[ Upstream commit 093162553c33e9479283e107b4431378271c735d ]
Before escaping RCU protected section and adding packet into
prequeue, make sure the dst is refcounted.
Reported-by: Mike Galbraith <bitbucket@...ine.de>
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
include/net/tcp.h | 1 +
1 file changed, 1 insertion(+)
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1049,6 +1049,7 @@ static inline bool tcp_prequeue(struct s
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) {
--
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