From mboxrd@z Thu Jan  1 00:00:00 1970
From: James Bottomley <James.Bottomley@SteelEye.com>
Subject: Re: Fw: crash on x86_64 - mm related?
Date: Mon, 12 Dec 2005 11:45:30 -0600
Message-ID: <1134409531.9994.13.camel@mulgrave>
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To: Linus Torvalds <torvalds@osdl.org>
Cc: Ryan Richter <ryan@tau.solarneutrino.net>, Hugh Dickins <hugh@veritas.com>, Kai Makisara <Kai.Makisara@kolumbus.fi>, Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org
List-Id: linux-scsi@vger.kernel.org

On Mon, 2005-12-12 at 09:40 -0800, Linus Torvalds wrote:
> I think it's the "sdev->single_lun" test at the very top of the function, 
> where "sdev" was initialized with "q->queuedata". So it looks like 
> somebody free'd the request_queue structure before the IO completed.
> 
> Definitely sounds like something screwy in SCSI.. I don't think this is VM 
> related.

Welcome back home.

This is that SCSI patch you reversed just before you went away.  If you
put it back again, the problem will go away ...

James