From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753126AbXCMGAJ (ORCPT ); Tue, 13 Mar 2007 02:00:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753133AbXCMGAJ (ORCPT ); Tue, 13 Mar 2007 02:00:09 -0400 Received: from mail.kroah.org ([69.55.234.183]:46223 "EHLO perch.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753126AbXCMGAH (ORCPT ); Tue, 13 Mar 2007 02:00:07 -0400 Date: Mon, 12 Mar 2007 22:59:28 -0700 From: Greg KH To: Andrew Morton Cc: Alan Cox , "bugme-daemon@kernel-bugs.osdl.org" , linux-kernel@vger.kernel.org, ktk@bigfoot.com Subject: Re: [Bugme-new] [Bug 8187] New: 2.6.20 "PCI: Quirks" patch breaks X11 on I82801 Message-ID: <20070313055928.GA12223@kroah.com> References: <200703122030.l2CKU5ES022977@fire-2.osdl.org> <20070312221952.691adeea.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070312221952.691adeea.akpm@linux-foundation.org> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 12, 2007 at 10:19:52PM -0800, Andrew Morton wrote: > > On Mon, 12 Mar 2007 13:30:05 -0700 bugme-daemon@bugzilla.kernel.org wrote: > > http://bugzilla.kernel.org/show_bug.cgi?id=8187 > > > > Summary: 2.6.20 "PCI: Quirks" patch breaks X11 on I82801 > > Kernel Version: 2.6.20 > > Status: NEW > > Severity: normal > > Owner: greg@kroah.com > > Submitter: ktk@bigfoot.com > > > > > > Most recent kernel where this bug did *NOT* occur: > > Any 2.6.20-pre prior to commit 368c73d4f689dae0807d0a2aa74c61fd2b9b075f > > > > Distribution: Slackware 11.0 > > Hardware Environment: HP/Compaq dc5000S (P4, 82801, 82865) > > Software Environment: Xorg 6.9.0 > > Problem Description: > > > > Alan Cox introduced a "PCI: Quirks" patch (git commit > > 368c73d4f689dae0807d0a2aa74c61fd2b9b075f) in 2.6.20 that breaks X11 on this > > I82801 platform. Specifically, it causes the PCI initialisation to become > > buggered; Xorg 6.9.0 dumps the following to the console: > > (EE) end of block range 0x177 < begin 0x3f0 > > (EE) end of block range 0x177 < begin 0x3f0 > > (WW) ****INVALID IO ALLOCATION**** b: 0x14d0 e: 0x14d7 correcting > > [...] > > Backtrace: > > 0: X(xf86SigHandler+0x8a) [0x8088b2a] > > 1: [0xb7f2b420] > > 2: /usr/X11R6/lib/modules/drivers/i810_drv.so [0xb797f592] > > 3: X(InitOutput+0xb83) [0x8072713] > > 4: X(main+0x226) [0x80d4496] > > 5: /lib/tls/libc.so.6(__libc_start_main+0xd4) [0xb7da7e14] > > 6: X [0x806ff61] > > > > Fatal server error: > > Caught signal 11. Server aborting > > > > Steps to reproduce: > > > > Reverting the git commit mentioned above fixes the issue. Apparently, this may > > be limited to certain combinations of on-motherboard chipsets, as I haven't seen > > many bug reports. Googling shows some people having X11 segfault issues with > > 2.6.20 (e.g. freedesktop.org bug #9956) but in most of those cases it's due to > > the evdev driver and not PCI initialisation. > > > > I wrote to Alan (cc'ed Greg as he signed off on the patch) nearly two weeks ago > > but have heard nothing, so I'm leaving a bug here instead. > > > > argh. > > Would we break more machines than we fix if we just revert that? I don't know, Alan? thanks, greg k-h