Re: [PATCH] slub: fix a memory leak in get_partial_node()

From: JoonSoo Kim
Date: Wed May 16 2012 - 09:56:48 EST


2012/5/16 Pekka Enberg <penberg@xxxxxxxxxx>:
> <On Tue, 15 May 2012, Christoph Lameter wrote:
>
>> On Wed, 16 May 2012, Joonsoo Kim wrote:
>>
>> > In the case which is below,
>> >
>> > 1. acquire slab for cpu partial list
>> > 2. free object to it by remote cpu
>> > 3. page->freelist = t
>> >
>> > then memory leak is occurred.
>>
>> Hmmm... Ok so we cannot assign page->freelist in get_partial_node() for
>> the cpu partial slabs. It must be done in the cmpxchg transition.
>>
>> Acked-by: Christoph Lameter <cl@xxxxxxxxx>
>
> Joonsoo, can you please fix up the stable submission format, add
> Christoph's ACK and resend?
>
>                        Pekka

Thanks for comment.
I'm a kernel newbie,
so could you please tell me how to fix up the stable submission format?
I'm eager to fix it up, but I don't know how to.

I read stable_kernel_rules.txt, this article tells me I must note
upstream commit ID.
Above patch is not included in upstream currently, so I can't find
upstream commit ID.
Is 'Acked-by from MAINTAINER' sufficient for submitting to stable-kernel?
Is below format right for stable submission format?


To: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx>, Pekka Enberg <penberg@xxxxxxxxxx>

CC: Christoph Lameter <cl@xxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx,
linux-mm@xxxxxxxxx

[ Upstream commit xxxxxxxxxxxxxxxxxxx ]

Comment is here

Acked-by:
Signed-off-by:
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