From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: Linux 3.0 oopses when pulling a USB CDROM Date: Fri, 1 Jul 2011 20:32:27 +0200 Message-ID: <20110701183227.GF23059@one.firstfloor.org> References: <20110701170531.GA3693@tassilo.jf.intel.com> <20110701181406.GA1614@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20110701181406.GA1614@redhat.com> Sender: linux-kernel-owner@vger.kernel.org To: Dave Jones , Andi Kleen , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, axboe@kernel.dk, rjw@sisk.pl List-Id: linux-scsi@vger.kernel.org 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