From 302a50bc941010d7a67f288fd0db31981e4d722d Mon Sep 17 00:00:00 2001
From: Steffen Klassert <steffen.klassert@secunet.com>
Date: Wed, 28 Aug 2013 08:47:14 +0200
Subject: [PATCH] xfrm: Fix potential null pointer dereference in
 xdst_queue_output

The net_device might be not set on the skb when we try refcounting.
This leads to a null pointer dereference in xdst_queue_output().
It turned out that the refcount to the net_device is not needed
after all. The dst_entry has a refcount to the net_device before
we queue the skb, so it can't go away. Therefore we can remove the
refcount on queueing to fix the null pointer dereference.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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