From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============7324582358254456423==" MIME-Version: 1.0 From: Dave Jones To: lkp@lists.01.org Subject: Re: More information please. Re: [fs] 54cc07a761: BUG: kernel test crashed Date: Tue, 26 Jul 2016 17:15:16 -0400 Message-ID: <20160726211516.GA9577@codemonkey.org.uk> In-Reply-To: <20160726151344.GB8811@wfg-t540p.sh.intel.com> List-Id: --===============7324582358254456423== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On Tue, Jul 26, 2016 at 11:13:44PM +0800, Fengguang Wu wrote: = > >> The "BUG: kernel test crashed" means the VM reboots by itself while > >> the trinity test is running. If the error message is "BUG: kernel boot > >> crashed" it'd mean VM abnormally reboots before any test is launched. > > > >Is it possible to include a url pointing to a page of documentation > >holding this information in your emails or alternatively a url pointing > >to some source code. Just so other people don't have to ask you this > >question. > = > Yes that's the right directions to follow. We'll make the reports more > understandable and the test/bisects more reliable. > = > In particular, I suspect this false report might be related to QEMU > watchdog. The wild guess is, if trinity touches the watchdog device by > accident, it may result in the VM reset w/o any symptom. = See ignore_files() in pathnames.c Adding an entry to the blacklist there is easy enough to prove/disprove thi= s. Dave --===============7324582358254456423==-- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758433AbcGZVP3 (ORCPT ); Tue, 26 Jul 2016 17:15:29 -0400 Received: from arcturus.aphlor.org ([188.246.204.175]:42908 "EHLO arcturus.aphlor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758401AbcGZVP0 (ORCPT ); Tue, 26 Jul 2016 17:15:26 -0400 Date: Tue, 26 Jul 2016 17:15:16 -0400 From: Dave Jones To: Fengguang Wu Cc: "Eric W. Biederman" , containers@lists.linux-foundation.org, lkp@01.org, LKML Subject: Re: [LKP] More information please. Re: [fs] 54cc07a761: BUG: kernel test crashed Message-ID: <20160726211516.GA9577@codemonkey.org.uk> Mail-Followup-To: Dave Jones , Fengguang Wu , "Eric W. Biederman" , containers@lists.linux-foundation.org, lkp@01.org, LKML References: <5793dfa5.mvXPj4LJOS0dlz3i%xiaolong.ye@intel.com> <877fc9a6mb.fsf@x220.int.ebiederm.org> <20160726143545.GA23656@wfg-t540p.sh.intel.com> <87vazsv4cn.fsf@x220.int.ebiederm.org> <20160726151344.GB8811@wfg-t540p.sh.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160726151344.GB8811@wfg-t540p.sh.intel.com> User-Agent: Mutt/1.6.0 (2016-04-01) X-Spam-Flag: skipped (authorised relay user) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 26, 2016 at 11:13:44PM +0800, Fengguang Wu wrote: > >> The "BUG: kernel test crashed" means the VM reboots by itself while > >> the trinity test is running. If the error message is "BUG: kernel boot > >> crashed" it'd mean VM abnormally reboots before any test is launched. > > > >Is it possible to include a url pointing to a page of documentation > >holding this information in your emails or alternatively a url pointing > >to some source code. Just so other people don't have to ask you this > >question. > > Yes that's the right directions to follow. We'll make the reports more > understandable and the test/bisects more reliable. > > In particular, I suspect this false report might be related to QEMU > watchdog. The wild guess is, if trinity touches the watchdog device by > accident, it may result in the VM reset w/o any symptom. See ignore_files() in pathnames.c Adding an entry to the blacklist there is easy enough to prove/disprove this. Dave