netdev - Re: [PATCH] sfq: deadlock in error path

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Message-Id: <20110202.205129.71116059.davem@davemloft.net>
Date:	Wed, 02 Feb 2011 20:51:29 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	shemminger@...tta.com, netdev@...r.kernel.org
Subject: Re: [PATCH] sfq: deadlock in error path

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 03 Feb 2011 02:51:02 +0100

> Le mercredi 02 février 2011 à 17:19 -0800, Stephen Hemminger a écrit :
>> The change to allow divisor to be a parameter (in 2.6.38-rc1)
>>  commit 817fb15dfd988d8dda916ee04fa506f0c466b9d6
>> introduced a possible deadlock caught by sparse.
>> 
>> The scheduler tree lock was left locked in the case of an incorrect
>> divisor value. Simplest fix is to move test outside of lock
>> which also solves problem of partial update.
>> 
>> Signed-off-by: Stephen Hemminger <shemminger@...tta.com>
> 
> Oops, thanks Stephen !
> 
> Acked-by: Eric Dumazet <eric.dumazet@...il.com>

Applied, thanks.
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