From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752012Ab3KRXKU (ORCPT ); Mon, 18 Nov 2013 18:10:20 -0500 Received: from lxorguk.ukuu.org.uk ([81.2.110.251]:34276 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751301Ab3KRXKR (ORCPT ); Mon, 18 Nov 2013 18:10:17 -0500 Date: Mon, 18 Nov 2013 23:05:53 +0000 From: One Thousand Gnomes To: Vince Weaver Cc: Peter Zijlstra , LKML , Ingo Molnar , Paul Mackerras , Arnaldo Carvalho de Melo , tytso@mit.edu, adilger.kernel@dilger.ca Subject: Re: perf bug: bad page map Message-ID: <20131118230553.32c478df@alan.etchedpixels.co.uk> In-Reply-To: References: <20131118151746.GC10022@twins.programming.kicks-ass.net> Organization: Intel Corporation X-Mailer: Claws Mail 3.8.1 (GTK+ 2.24.20; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 18 Nov 2013 11:41:22 -0500 (EST) Vince Weaver wrote: > On Mon, 18 Nov 2013, Peter Zijlstra wrote: > > > On Fri, Nov 15, 2013 at 01:04:23PM -0500, Vince Weaver wrote: > > > > > > (figured out the minicom issue). > > > > > > Anyway while trying to reproduce the last bug I instead got this with > > > the perf_fuzzer. > > > > > > Is it worth continuing to run and report these issues? I'm losing track > > > of all the open bugs. > > > > This is looks like ext4. Not entirely sure how perf ties into this. > > It's believable the filesystem could have issues (it's a fuzzer machine, > so it's had 100+ unclean shutdowns on an SSD drive in the past few months) > but as far as I know there shouldn't have been any filesystem accesses > happening at all when the bug triggered. Obvious question - does it pass fsck currently. If it does then presumably it was sane at the time it went pop ?