From: Oliver Hartkopp <socketcan@hartkopp.net>
Date: Thu, 23 Jan 2014 09:19:34 +0000 (+0100)
Subject: fib_frontend: fix possible NULL pointer dereference
X-Git-Tag: v3.14-rc1~94^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a0065f266a9b5d51575535a25c15ccbeed9a9966;p=pandora-kernel.git

fib_frontend: fix possible NULL pointer dereference

The two commits 0115e8e30d (net: remove delay at device dismantle) and
748e2d9396a (net: reinstate rtnl in call_netdevice_notifiers()) silently
removed a NULL pointer check for in_dev since Linux 3.7.

This patch re-introduces this check as it causes crashing the kernel when
setting small mtu values on non-ip capable netdevices.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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