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

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Message-ID: <20110702181008.GL23059@one.firstfloor.org>
Date:	Sat, 2 Jul 2011 20:10:08 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Andi Kleen <andi@...stfloor.org>,
	James Bottomley <James.Bottomley@...senPartnership.com>,
	Dave Jones <davej@...hat.com>, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org, axboe@...nel.dk, rjw@...k.pl,
	linux-usb@...r.kernel.org
Subject: Re: Linux 3.0 oopses when pulling a USB CDROM

On Sat, Jul 02, 2011 at 08:38:20AM -0400, Alan Stern wrote:
> On Sat, 2 Jul 2011, Andi Kleen wrote:
> 
> > > I'm not able to reproduce it on a vanilla 3.0-rc5 system.  Can anybody
> > > give the exact sequence of steps you went through to trigger the bug?
> > 
> > Connect USB storage device with builtin fake CD rom. Wait for udisk
> > to mount it. Pull cable. udisk does umount. Oops.
> > 
> > I also got a log of the refcounting now if you want it.
> 
> Yes, please.  The excerpt that James posted isn't enough.  In 
> particular, it doesn't show what happens during device creation.

http://halobates.de/tmp/usb-pull-oops-ref

-Andi
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