netdev - Re: [PATCH] XFRM: Fix memory leak in xfrm_state

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Date:	Fri, 08 Jul 2011 08:59:11 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.hengli.com.au
Cc:	tgohad@...sta.com, netdev@...r.kernel.org, tusharsg@...il.com
Subject: Re: [PATCH] XFRM: Fix memory leak in xfrm_state_update

From: Herbert Xu <herbert@...dor.hengli.com.au>
Date: Fri, 8 Jul 2011 11:00:32 +0800

> On Thu, Jul 07, 2011 at 06:38:52PM -0700, Tushar Gohad wrote:
>>
>> Upon "ip xfrm state update ..", xfrm_add_sa() takes an extra reference on 
>> the user-supplied SA and forgets to drop the reference when  
>> xfrm_state_update() returns 0.  This leads to a memory leak as the  
>> parameter SA is never freed.  This change attempts to fix the leak by  
>> calling __xfrm_state_put() when xfrm_state_update() updates a valid SA  
>> (err = 0).  The parameter SA is added to the gc list when the final  
>> reference is dropped by xfrm_add_sa() upon completion.
>>
>> Signed-off-by: Tushar Gohad <tgohad@...sta.com>
> 
> Ouch, thanks for catching this bug!
> 
> Acked-by: Herbert Xu <herbert@...dor.apana.org.au>

Applied, thanks.
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