netdev - [PATCH] Fix null dereference in ip

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Date:	Fri, 21 Mar 2008 12:09:30 -0700
From:	Phil Oester <kernel@...uxace.com>
To:	netdev@...r.kernel.org
Subject: [PATCH] Fix null dereference in ip_defrag

Been seeing occasional panics in my testing of 2.6.25-rc in ip_defrag.
Offending line in ip_defrag is here:

	net = skb->dev->nd_net

where dev is NULL.  Bisected the problem down to commit
ac18e7509e7df327e30d6e073a787d922eaf211d ([NETNS][FRAGS]: Make the
inet_frag_queue lookup work in namespaces).  

Below patch (idea from Patrick McHardy) fixes the problem for me.

Signed-off-by: Phil Oester <kernel@...uxace.com>
Acked-by: Patrick McHardy <kaber@...sh.net>

Phil

View attachment "patch-ipfrags" of type "text/plain" (481 bytes)