tree 0e935ff454cd02558b88ec10c817ad703598977c
parent 322b1f79dacd58cc430bc610b76d6f0ecd5d8874
author Oliver Hartkopp <socketcan@hartkopp.net> 1390468774 +0100
committer David S. Miller <davem@davemloft.net> 1390607486 -0800

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>