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Message-ID: <87hb58inew.fsf@franklin.jf.intel.com>
Date:	Tue, 23 Aug 2011 00:42:47 -0700
From:	Dheeraj Reddy <dheeraj.reddy@...el.com>
To:	linux-kernel@...r.kernel.org
Cc:	kernel-testers@...r.kernel.org
Subject: Re: [Bug #39342] [3.0.0-rc6-git7] possible recursive locking atcache_alloc_refill

Peter Zijlstra <peterz@...radead.org> writes:

> On Mon, 2011-08-15 at 08:46 +0300, Pekka Enberg wrote:
>> On Mon, Aug 15, 2011 at 1:36 AM, Tetsuo Handa
>> <penguin-kernel@...ove.sakura.ne.jp> wrote:
>> > Pekka Enberg wrote:
>> >> Tetsuio, did Peter's commit 30765b9 ("slab, lockdep: Annotate the locks
>> >> before using them") and commit 83835b3 ("slab, lockdep: Annotate slab ->
>> >> rcu -> debug_object -> slab") in Linus' git fix this for you?
>> >
>> > Yes. Applying these two commits fixes this problem.
>> >
>> > Thank you.
>> 
>> The commits weren't tagged for -stable, I'm afraid. Peter?
>
> I must have forgotten people were actually triggering this on 3.0. Feel
> free to tell gregkh to include those two patches in his next 3.0-stable
> lineup.

I have added some more info to the bug report. I can see a similar
lockdep issue in 3.1 rc3.

dheeraj
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