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Date: Tue, 19 Jul 2011 07:48:11 +0900
Message-ID: <CAEwNFnDwjWDF7Z4AUZg9rAHN6=n9nZ5tZe5U8USn7TpVCNsM6A@mail.gmail.com>
Subject: Re: NULL poniter dereference in isolate_lru_pages 2.6.39.1
From: Minchan Kim <minchan.kim@gmail.com>
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Sender: owner-linux-mm@kvack.org
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To: Chris Pearson <pearson.christopher.j@gmail.com>
Cc: linux-mm@kvack.org, Andrea Arcangeli <aarcange@redhat.com>, Andrew Morton <akpm@linux-foundation.org>, stable <stable@kernel.org>

Thanks for the test, Chris.
Andrew.
We should push this into -stable.


On Fri, Jul 15, 2011 at 10:48 AM, Chris Pearson
<pearson.christopher.j@gmail.com> wrote:
> That definately fixed it. =C2=A0MTBF was about 20 days on those systems, =
since that patch we've had 200 server days with no problems.
>
> Thanks!
>
> On Tue, 12 Jul 2011, Minchan Kim wrote:
>
>>Date: Tue, 12 Jul 2011 09:16:09 +0900
>>From: Minchan Kim <minchan.kim@gmail.com>
>>To: Chris Pearson <pearson.christopher.j@gmail.com>
>>Cc: linux-mm@kvack.org, Andrea Arcangeli <aarcange@redhat.com>,
>> =C2=A0 =C2=A0Andrew Morton <akpm@linux-foundation.org>, stable <stable@k=
ernel.org>
>>Subject: Re: NULL poniter dereference in isolate_lru_pages 2.6.39.1
>>
>>On Tue, Jul 12, 2011 at 5:52 AM, Chris Pearson
>><pearson.christopher.j@gmail.com> wrote:
>>> We applied the patch to many servers. =C2=A0No problems so far.
>>>
>>> The .config is attached.
>>
>>Thanks. I verified. The point where isolate_lru_pages + 0x225 is
>>page_count exactly. So Andrea patch solves this problem apparently.
>>Couldn't we throw this patch to stable tree?
>>
>>https://patchwork.kernel.org/patch/857442/
>>
>>>
>>> What's the config option to get that debugging info in the future?
>>
>>CONFIG_DEBUG_INFO helps you. :)
>>
>>--
>>Kind regards,
>>Minchan Kim
>>
>



--=20
Kind regards,
Minchan Kim

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