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Message-Id: <1244767752.3618.13.camel@localhost.localdomain>
Date:	Fri, 12 Jun 2009 08:49:12 +0800
From:	yakui_zhao <yakui.zhao@...el.com>
To:	Niel Lambrechts <niel.lambrechts@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"eric@...olt.net" <eric@...olt.net>,
	"jbarnes@...tuousgeek.org" <jbarnes@...tuousgeek.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>
Subject: Re: 2.6.30-rc6: i915: Xserver crash - oops after rmmod

On Thu, 2009-05-28 at 13:13 +0800, Niel Lambrechts wrote:
> Hi Andrew,
> 
> On 05/28/2009 02:14 AM, Andrew Morton wrote:
> > On Mon, 18 May 2009 21:21:18 +0200
> > Niel Lambrechts <niel.lambrechts@...il.com> wrote:
> >
> >   
> >> Hi,
> >>     
> > Huge response, huh?
> >   
> Yeah, no one fell for the humour coating... ;-)
> 
> > The wordwrapping makes this painful to read.
> >
> > rmmod crashed under drivers/acpi/video.c:acpi_video_exit()'s call to
> > acpi_bus_unregister_driver().  So it might be an acpi-related bug.
> >
> > If it's reproducible at all, please raise a (non-wordwrapped!) report
> > against acpi at bugzilla.kernel.org, thanks.
> >   
> Ugh, Thunderbird doesn't format it like this when you preview - but when
> I save it to a file it looks horrible...
> 
> I don't think I would easily be able to reproduce this, but I still had
> a copy of my kernel log for that date. The bug is filed at:
> http://bugzilla.kernel.org/show_bug.cgi?id=13396
> 
> Also, if you do have a moment, I'd love to hear your opinion on my post
> "2.6.29.4: hibernation fails with large kernel trace"!
> 
> Thanks for the response!
Yes. This bug can be reproduced very easily. 
I attach one patch in bug
http://bugzilla.kernel.org/show_bug.cgi?id=13396#C5.
And the issue should be fixed by the patch.

In the patch the reference count is added to avoid loading/unloading the
ACPI video bus twice.

Thanks.
> 
> Niel
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