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Message-ID: <b040c32a0702011028n37715f12s391d1ac884917763@mail.gmail.com>
Date: Thu, 1 Feb 2007 10:28:25 -0800
From: "Ken Chen" <kenchen@google.com>
To: "Ananiev, Leonid I" <leonid.i.ananiev@intel.com>
Subject: Re: Kernel BUG at fs/aio.c:509
Cc: "Andrew Morton" <akpm@osdl.org>, linux-kernel@vger.kernel.org,
       linux-aio@kvack.org
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On 2/1/07, Ananiev, Leonid I <leonid.i.ananiev@intel.com> wrote:
> >> BUG: warning at mm/truncate.c:398/invalidate_inode_pages2_range()
> >  That warning got removed from -rc7.
>
> 2.6.20-rc-7: After 57 minutes and after 25 minutes of aiostress running
> I've got 2 system hangs without any message in log.
> On the third time I opened the console and got kernel panic massage:

I think it would be worthwhile to put some instrumentation in
__aio_put_req to track last couple ref decrement for each aiocb.  My
hunch is that aio_complete() was called twice on the same aiocb.

    - Ken
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