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

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Message-ID: <Pine.LNX.4.44L0.1107020837220.11097-100000@netrider.rowland.org>
Date:	Sat, 2 Jul 2011 08:38:20 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Andi Kleen <andi@...stfloor.org>
cc:	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, 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.

Alan Stern

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