From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 27 May 2010 23:09:39 +0000 (-0700)
Subject: net: fix __neigh_event_send()
X-Git-Tag: v2.6.35-rc1~24^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a47311380e094bb201be8a818370c73c3f52122c;p=pandora-kernel.git

net: fix __neigh_event_send()

commit 7fee226ad23 (net: add a noref bit on skb dst) missed one spot
where an skb is enqueued, with a possibly not refcounted dst entry.

__neigh_event_send() inserts skb into arp_queue, so we must make sure
dst entry is refcounted, or dst entry can be freed by garbage collector
after caller exits from rcu protected section.

Reported-by: Ingo Molnar <mingo@elte.hu>
Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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