From 9a873c71e91cabf4c10fd9bbd8358c22deaf6c9e Mon Sep 17 00:00:00 2001
From: Chas Williams <3chas3@gmail.com>
Date: Wed, 19 Aug 2015 19:14:20 -0400
Subject: [PATCH] net/xen-netfront: only clean up queues if present

If you simply load and unload the module without starting the interfaces,
the queues are never created and you get a bad pointer dereference.

Signed-off-by: Chas Williams <3chas3@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reading git-format-patch failed