From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752047AbaI3Ou6 (ORCPT ); Tue, 30 Sep 2014 10:50:58 -0400 Received: from mx.treblig.org ([80.68.94.177]:44565 "EHLO mx.treblig.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751563AbaI3Ou4 (ORCPT ); Tue, 30 Sep 2014 10:50:56 -0400 Date: Tue, 30 Sep 2014 15:50:55 +0100 From: "Dr. David Alan Gilbert" To: Marcin Gibula Cc: linux-kernel@vger.kernel.org, aarcange@redhat.com Subject: Re: 3.16.1 - general protection fault Message-ID: <20140930145055.GA24978@gallifrey> References: <20140924201827.GA30643@gallifrey> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140924201827.GA30643@gallifrey> X-Chocolate: 70 percent or better cocoa solids preferably X-Operating-System: Linux/3.2.60-kvm-i386-20140609 (i686) X-Uptime: 15:50:16 up 67 days, 22:14, 1 user, load average: 0.01, 0.04, 0.05 User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Dr. David Alan Gilbert (dave@treblig.org) wrote: > * Marcin Gibula (m.gibula@gmail.com) wrote: > > Hi Marcin, > > > Hi, > > > > I've been playing with 3.16 kernel on my test machine as a KVM > > hypervisor and encountered the following crash twice (almost identical > > backtraces). > > > > Sep 24 09:39:31 dev4 kernel: general protection fault: 0000 [#1] SMP > > > > > This machine is serving as NFS client and KVM hypervisor. I'm still > > not sure how to trigger it reliably (right now, I just have to run > > ubuntu instalation in VM guest multiple times and sometimes it > > triggers). > > > > Attaching .config, slub.s and disassembled __kmalloc_node_track_caller function. > > Yes, I hit something similar: > > http://www.spinics.net/lists/linux-nfs/msg46047.html 'nfs: disallow duplicate pages in pgio page vectors' > http://www.spinics.net/lists/linux-nfs/msg46048.html 'nfs: can_coalesce_requests must enforce contiguity' > > seem to stop the GPF's/crashes, although there's still something else > going on with a corruption I'm seeing every so often. And that 'something else' seems to be fixed by: http://marc.info/?l=linux-nfs&m=141208464631105&w=2 Enjoy, Dave -- -----Open up your eyes, open up your mind, open up your code ------- / Dr. David Alan Gilbert | Running GNU/Linux | Happy \ \ gro.gilbert @ treblig.org | | In Hex / \ _________________________|_____ http://www.treblig.org |_______/