Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761349AbXKHPET (ORCPT ); Thu, 8 Nov 2007 10:04:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760851AbXKHPEI (ORCPT ); Thu, 8 Nov 2007 10:04:08 -0500 Received: from iolanthe.rowland.org ([192.131.102.54]:47124 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1756693AbXKHPEH (ORCPT ); Thu, 8 Nov 2007 10:04:07 -0500 Date: Thu, 8 Nov 2007 10:04:05 -0500 (EST) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: "Fortier,Vincent [Montreal]" cc: Andrew Morton , , Subject: Re: [linux-usb-devel] BUG: usb Mouse continual disconnect (2.6.22.10) leading to eventual crash? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2434 Lines: 64 On Wed, 7 Nov 2007, Fortier,Vincent [Montreal] wrote: > > -----Message d'origine----- > > De : Andrew Morton [mailto:akpm@linux-foundation.org] > > Envoy? : 7 novembre 2007 15:33 > > > > (+linux-usb-devel) > > > > > On Wed, 7 Nov 2007 13:19:47 -0500 "Fortier,Vincent > > [Montreal]" wrote: > > > > > > I'm having a preblem with a few workstations that are hard freezing > > > from time to time since about a week. Curiously since then we > > > upgraded from > > > 2.6.20.6 to 2.6.20.10... > > > > > [.....] > > > > > > > Looking at the changes between 2.6.20.6 and 2.6.20.10 I only found > > > this USB related: > > > > > http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.22.y.git;a=commit;h=0e22438a5adfdf32b3bb1c75c81c01a29fba9770 > > > > > > I'm presuming that maybie eventually it might hit a input max barrier > > > (like a max of 1024) and then the kernel would be crashing? > > > > > > Help very much appreciated! > > > > People are going to want to know if this is still happening > > in 2.6.23 or 2.6.24-rc2, please. > > I andrew, > > (logged-in at wrok to make proper reply) > > It might be tricky to test properly on 2.6.23.1 since theses are all > operationnal aviation forecaster workstations 24/7 .... And sadly the > problem only occur on a few of theses workstations AFAIK randomly ??? > Actually many of them did not had any problems using the exact same > FAI reinstallation using the same hardware..?!?!. > > If someone thinks that the problem might effectively be the usb patch > that I mentionned before (or any other patch that might make > suddently thoses stations to freeze dur to a change that occur > between 2.6.20.6 and .10) I would then be able to push a new kernel > on thoses workstations without the offending patch(es) and have a > clear answer within a week. I have no idea what might be causing your problems, however that particular patch you found seems most unlikely to be connected. One reasonably non-invasive way to do more testing is to use usbmon to record those multiple disconnect events. Instructions are in the kernel source file Documentation/usb/usbmon.txt. Alan Stern - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/