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

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Message-ID: <20110701181406.GA1614@redhat.com>
Date:	Fri, 1 Jul 2011 14:14:06 -0400
From:	Dave Jones <davej@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	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 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
look to be the same as yours. (here's one for eg: https://bugzilla.redhat.com/show_bug.cgi?id=712830)

The common cause seems to be 'device went away'. So USB CD drives,
USB memory sticks, and for some reason virtualbox shutdown.

	Dave

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