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Date: Tue, 13 Mar 2007 12:18:30 +0100 From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Alan Cox <alan@...rguk.ukuu.org.uk>, Greg KH <greg@...ah.com>, "bugme-daemon@...nel-bugs.osdl.org" <bugme-daemon@...zilla.kernel.org>, linux-kernel@...r.kernel.org, ktk@...foot.com Subject: Re: [Bugme-new] [Bug 8187] New: 2.6.20 "PCI: Quirks" patch breaks X11 on I82801 On Tuesday 13 March 2007, Andrew Morton wrote: > > On Mon, 12 Mar 2007 13:30:05 -0700 bugme-daemon@...zilla.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@...ah.com > > Submitter: ktk@...foot.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? this should be fixed in 2.6.21-rc3, commit ed8ccee0918ad063a4741c0656fda783e02df627 Bart - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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