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From: Marek Lindner <lindner_marek@yahoo.de>
Date: Thu, 5 May 2011 14:20:10 +0200
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Subject: Re: [B.A.T.M.A.N.] [PATCH] batman-adv: move
	neigh_node->if_incoming->if_status check in find_router()
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To: The list for a Better Approach To Mobile Ad-hoc Networking <b.a.t.m.a.n@lists.open-mesh.org>

On Thursday 05 May 2011 10:21:42 Antonio Quartulli wrote:
>  return_router:
> +       if (router && router->if_incoming->if_status != IF_ACTIVE)
> +               router = NULL;
> +
>         rcu_read_unlock();
>         return router;

You are breaking the reference counting of 'router' here. While looking at 
your patch I found another refcount imbalance. Check the patch I just posted 
(Fix refcount imbalance in find_router).

Regards,
Marek