linux-kernel - Re: Linux 3.0 oopses when pulling a USB CDROM

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Message-ID: <20110701183227.GF23059@one.firstfloor.org>
Date:	Fri, 1 Jul 2011 20:32:27 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Dave Jones <davej@...hat.com>, Andi Kleen <andi@...stfloor.org>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	axboe@...nel.dk, rjw@...k.pl
Subject: Re: Linux 3.0 oopses when pulling a USB CDROM

On Fri, Jul 01, 2011 at 02:14:06PM -0400, Dave Jones wrote:
> On Fri, Jul 01, 2011 at 10:05:31AM -0700, Andi Kleen wrote:
> 
>  > I found I can reliably crash a 3.0 system by pulling the
>  > USB cable of a mounted USB cdrom (or rather a USB device which
>  > has a builtin fake CD-ROM) 
>  > 
>  > I suspect it's a regression too.
> 
> We've been seeing a lot of similar bugs in Fedora since we pushed
> a 2.6.38.8 update.  Some of the traces are different, but some

I've also seen one with an earlier kernel where the NULL 
reference was in elv_.* something.  Don't have a written down backtrace
for this, but perhaps you have.

-Andi
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