netdev - Re: [PATCH next 2/2] batman-adv: fix global protection fault during soft

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Message-Id: <20130422.204113.1112043388924796755.davem@davemloft.net>
Date:	Mon, 22 Apr 2013 20:41:13 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	ordex@...istici.org
Cc:	b.a.t.m.a.n@...ts.open-mesh.org, netdev@...r.kernel.org,
	lindner_marek@...oo.de
Subject: Re: [PATCH next 2/2] batman-adv: fix global protection fault
 during soft_iface destruction

From: Antonio Quartulli <ordex@...istici.org>
Date: Fri, 19 Apr 2013 11:04:52 +0200

> batadv_mesh_free() schedules some RCU callbacks which need the bat_priv struct
> to do their jobs, while free_netdev(), which is called immediately after, is
> destroying the private data.
> 
> Put an rcu_barrier() in the middle so that free_netdev() is invoked only after
> all the callbacks returned.
> 
> This bug has been introduced by ab8f433dd39be94e8617cff2dfe9f7eca162eb15
> ("batman-adv: Move deinitialization of soft-interface to destructor")
> 
> Signed-off-by: Antonio Quartulli <ordex@...istici.org>
> Signed-off-by: Marek Lindner <lindner_marek@...oo.de>

Applied.
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