From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Lutomirski <luto-3s7WtUTddSA@public.gmane.org>
Subject: Re: [Bug #14472] EXT4 corruption
Date: Thu, 29 Oct 2009 15:57:32 -0400
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	 <6dRYo8ss7vL.A.haF.Are5KB@chimera>
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To: "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org>
Cc: Linux Kernel Mailing List <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Kernel Testers List <kernel-testers-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Shawn Starr <shawn.starr-bJEeYj9oJeDQT0dZR+AlfA@public.gmane.org>, Theodore Tso <tytso-3s7WtUTddSA@public.gmane.org>

On Mon, Oct 26, 2009 at 2:55 PM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.31. =A0Please verify if it still should be listed and let me=
 know
> (either way).
>
>
> Bug-Entry =A0 =A0 =A0 : http://bugzilla.kernel.org/show_bug.cgi?id=3D=
14472
> Subject =A0 =A0 =A0 =A0 : EXT4 corruption
> Submitter =A0 =A0 =A0 : Shawn Starr <shawn.starr-bJEeYj9oJeDQT0dZR+AlfA@public.gmane.org>
> Date =A0 =A0 =A0 =A0 =A0 =A0: 2009-10-13 2:07 (14 days old)
> References =A0 =A0 =A0: http://marc.info/?l=3Dlinux-kernel&m=3D125539=
997508256&w=3D4
> Handled-By =A0 =A0 =A0: Theodore Tso <tytso-3s7WtUTddSA@public.gmane.org>
>


This but is *not* fixed.  I just triggered it a few minutes ago by
abusing i915 and drm, which caused a panic.  This is slightly newer
than 2.6.32-rc5, with a couple of i915 bugfixes thrown in.

Photos are here:
http://web.mit.edu/luto/www/ext4_crashphotos/

This is a very nasty regression, for obvious reasons.

--Andy