netdev - Re: [PATCH 2/2] bonding: fix bonding_masters race condition in bond unloading

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Message-Id: <20130408.164526.147100963232725098.davem@davemloft.net>
Date:	Mon, 08 Apr 2013 16:45:26 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	nikolay@...hat.com
Cc:	netdev@...r.kernel.org, andy@...yhouse.net, fubar@...ibm.com,
	vfalico@...hat.com
Subject: Re: [PATCH 2/2] bonding: fix bonding_masters race condition in
 bond unloading

From: Nikolay Aleksandrov <nikolay@...hat.com>
Date: Sat,  6 Apr 2013 12:54:38 +0200

> 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@...hat.com>

Applied.
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