commit 69b0216ac255f523556fa3d4ff030d857eaaa37f
author nikolay@redhat.com <nikolay@redhat.com> Sat Apr 06 00:54:38 2013 +0000
committer David S. Miller <davem@davemloft.net> Mon Apr 08 16:45:09 2013 -0400
tree 45138d6eae10f05815b353556fa62d57ceea35db
parent ffcdedb667b6db8ee31c7efa76a3ec59d9c3b0fc

bonding: fix bonding_masters race condition in bond unloading

While the bonding module is unloading, it is considered that after
rtnl_link_unregister all bond devices are destroyed but since no
synchronization mechanism exists, a new bond device can be created
via bonding_masters before unregister_pernet_subsys which would
lead to multiple problems (e.g. NULL pointer dereference, wrong RIP,
list corruption).

This patch fixes the issue by removing any bond devices left in the
netns after bonding_masters is removed from sysfs.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>