From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756121Ab3LDWdO (ORCPT ); Wed, 4 Dec 2013 17:33:14 -0500 Received: from www17.your-server.de ([213.133.104.17]:57553 "EHLO www17.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756099Ab3LDWdK (ORCPT ); Wed, 4 Dec 2013 17:33:10 -0500 Message-ID: <1386196384.5023.0.camel@localhost.localdomain> Subject: Re: [i915] BUG: Bad page state in process Xorg From: Thomas Meyer To: Rob Clark Cc: Daniel Vetter , DRI mailing list , Dave Airlie , Linux Kernel Mailing List Date: Wed, 04 Dec 2013 23:33:04 +0100 In-Reply-To: References: <1385800414.7279.3.camel@localhost.localdomain> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.8.5 (3.8.5-2.fc19) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Authenticated-Sender: thomas@m3y3r.de Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Samstag, den 30.11.2013, 08:55 -0500 schrieb Rob Clark: > On Sat, Nov 30, 2013 at 3:33 AM, Thomas Meyer wrote: > > Am Montag, den 25.11.2013, 08:23 -0500 schrieb Rob Clark: > >> oh, hmm.. are you importing buffers from i915? It looks like this part: > > > > My computer has an i915 graphic card and I use an USB docking station, > > that has an unconnected UDL device inside. > > > >> > >> - if (obj->base.import_attach) { > >> - drm_free_large(obj->pages); > >> - obj->pages = NULL; > >> - return; > >> - } > >> > >> should not have been removed from udl_gem_put_pages().. > > > > Do you want me to test this? Can this please be fixed in the stable > > tree? > > I removed the UDL driver from my config for now, as I don't use it. > > It would be nice if you could test that (I can send you a patch if you > prefer).. I don't actually have any UDL device to confirm. If this > fixes the problem, send the patch to stable as well should not be a > problem. I did a quick test and above code makes the bad page bug disappear. > > BR, > -R > > > > * > > best regards > > thomas > > > >> > >> BR, > >> -R > >> > >> On Mon, Nov 25, 2013 at 8:17 AM, wrote: > >> > Hi, > >> > > >> > It turns out that this seems to be a bug in udl DRM driver. > >> > > >> > I bisected the problem to this patch: > >> > > >> > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/gpu/drm/udl?id=5dc9e1e87229cb786a5bb58ddd0d60fee6eb4641 > >> > > >> > With kind regards > >> > Thomas > >> > > >> > Am 22.11.2013 17:18 schrieb Daniel Vetter : > >> >> > >> >> On Fri, Nov 22, 2013 at 4:54 PM, Thomas Meyer wrote: > >> >> >> Am 22.11.2013 um 11:55 schrieb Daniel Vetter : > >> >> >> > >> >> >> On Fri, Nov 22, 2013 at 11:36 AM, Dave Airlie wrote: > >> >> >>>> Hi, > >> >> >>> > >> >> >>> cc'ing mailing list, > >> >> >>> > >> >> >>> Daniel any ideas? > >> >> >> > >> >> >> Nope, not really :( And no ideas how to triage this further - if it > >> >> >> takes 9 days to hit it eventually we'll have a real hard time. Or does > >> >> >> this happen even after just a short X run? > >> >> > > >> >> > Seems to happen every time while stopping the x server. Also after a short run time. > >> >> > > >> >> > The current fedora 3.11 kernel doesn't show this bug. I'm using fedora 19, with a self compiled kernel. > >> >> > > >> >> > I did turn on config-debug-pagealloc but this didn't show any wrongness. > >> >> > >> >> In that case I think the bisect is the fastest way to insight - atm > >> >> I'm really at loss what could be wrong here. > >> >> -Daniel > >> >> -- > >> >> Daniel Vetter > >> >> Software Engineer, Intel Corporation > >> >> +41 (0) 79 365 57 48 - http://blog.ffwll.ch > > > > > >