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Re: kernel crash from openSUSE 11.2

To: Michael Monnerie <michael.monnerie@xxxxxxxxxxxxxxxxxxx>
Subject: Re: kernel crash from openSUSE 11.2
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Sun, 10 Oct 2010 12:56:28 +1100
Cc: xfs@xxxxxxxxxxx
In-reply-to: <201010092355.17240@xxxxxx>
References: <201010092355.17240@xxxxxx>
User-agent: Mutt/1.5.20 (2009-06-14)
On Sat, Oct 09, 2010 at 11:55:16PM +0200, Michael Monnerie wrote:
> I just had a bug in one VM, and don't know if this is XFS related, but it 
> seems so.
> [1172140.926859] BUG: unable to handle kernel paging request at 
> 00000003d03dd178
> [1172140.926877] IP: [<ffffffff80034872>] dequeue_task+0x72/0x110
> [1172140.926897] PGD 1b54b067 PUD 0 
> [1172140.926897] Thread overran stack, or stack corrupted

The stack trace shows pdflush doing writeback, and way down the
stack doing a memory allocation that triggered direct reclaim, which
caused writeback to occur, which blew the stack.....



Dave Chinner

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