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From: Marek Lindner <mareklindner@neomailbox.ch>
Date: Sun, 27 Mar 2016 15:08:39 +0800
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Subject: Re: [B.A.T.M.A.N.] [PATCH] batman-adv: Deactive TO_BE_ACTIVATED
	hardif on shutdown
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On Saturday, March 19, 2016 13:55:21 Sven Eckelmann wrote:
> The shutdown of an batman-adv interface can happen with one of its slave
> interfaces still being in the BATADV_IF_TO_BE_ACTIVATED state. A possible
> reason for it is that the routing algorithm BATMAN_V was selected and
> batadv_schedule_bat_ogm was not yet called for this interface. This slave
> interface still has to be set to BATADV_IF_INACTIVE or the batman-adv
> interface will never reduce its usage counter and thus never gets shutdown.
> 
> This problem can be simulated via:
> 
>     $ modprobe dummy
>     $ modprobe batman-adv routing_algo=BATMAN_V
>     $ ip link add bat0 type batadv
>     $ ip link set dummy0 master bat0
>     $ ip link set dummy0 up
>     $ ip link del bat0
>     unregister_netdevice: waiting for bat0 to become free. Usage count = 3
> 
> Fixes: 88861ea9acb7 ("[batman-adv] replacing if up/down timer with kernel
> notifications") Reported-by: Matthias Schiffer
> <mschiffer@universe-factory.net>
> Signed-off-by: Sven Eckelmann <sven@narfation.org>

Applied in revision fbb98aa.

Thanks,
Marek

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