From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: Re: Linux 3.0 oopses when pulling a USB CDROM Date: Fri, 01 Jul 2011 15:29:08 -0500 Message-ID: <1309552148.2722.46.camel@mulgrave> References: <20110701170531.GA3693@tassilo.jf.intel.com> <20110701181406.GA1614@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20110701181406.GA1614@redhat.com> Sender: linux-kernel-owner@vger.kernel.org To: Dave Jones Cc: Andi Kleen , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, axboe@kernel.dk, rjw@sisk.pl, linux-usb@vger.kernel.org List-Id: linux-scsi@vger.kernel.org On Fri, 2011-07-01 at 14:14 -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 > 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. I think it's something specific in the USB path. I can't reproduce on 3.0-rc5 with a SATA DVD hot unplug. USB cc's added. James