netdev - Re: [PATCH][NETNS]: The ip6_fib_timer can work with garbage on net namespace stop.

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Date:	Mon, 21 Apr 2008 14:23:15 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	xemul@...nvz.org
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH][NETNS]: The ip6_fib_timer can work with garbage on net
 namespace stop.

From: Pavel Emelyanov <xemul@...nvz.org>
Date: Mon, 21 Apr 2008 17:05:50 +0400

> The del_timer() function doesn't guarantee, that the timer callback
> is not active by the time it exits.
> 
> Thus, the fib6_net_exit() may kfree() all the data, that is required
> by the fib6_run_gc(). The race window is tiny, but slab poisoning can
> trigger this bug.
> 
> Using del_timer_sync() will cure this.
> 
> Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>

Applied, thanks Pavel.
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