From 02d13ed5f94af38c37d1abd53462fe48d78bcc9d Mon Sep 17 00:00:00 2001
From: Tom Parkin <tparkin@katalix.com>
Date: Tue, 19 Mar 2013 06:11:18 +0000
Subject: [PATCH] l2tp: don't BUG_ON sk_socket being NULL

It is valid for an existing struct sock object to have a NULL sk_socket
pointer, so don't BUG_ON in l2tp_tunnel_del_work if that should occur.

Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reading git-format-patch failed