Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753729Ab1FAGbR (ORCPT ); Wed, 1 Jun 2011 02:31:17 -0400 Received: from fnarfbargle.com ([93.93.131.224]:54955 "EHLO fnarfbargle.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1752583Ab1FAGbP (ORCPT ); Wed, 1 Jun 2011 02:31:15 -0400 Message-ID: <4DE5DCA8.7070704@fnarfbargle.com> Date: Wed, 01 Jun 2011 14:31:04 +0800 From: Brad Campbell User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.17) Gecko/20110424 Lightning/1.0b2 Thunderbird/3.1.10 MIME-Version: 1.0 To: Hugh Dickins CC: Andrea Arcangeli , Borislav Petkov , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-mm Subject: Re: KVM induced panic on 2.6.38[2367] & 2.6.39 References: <4DE44333.9000903@fnarfbargle.com> <20110531054729.GA16852@liondog.tnic> <4DE4B432.1090203@fnarfbargle.com> <20110531103808.GA6915@eferding.osrc.amd.com> <4DE4FA2B.2050504@fnarfbargle.com> <4DE589C5.8030600@fnarfbargle.com> <20110601011527.GN19505@random.random> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1140 Lines: 32 On 01/06/11 12:52, Hugh Dickins wrote: > > I guess Brad could try SLUB debugging, boot with slub_debug=P > for poisoning perhaps; though it might upset alignments and > drive the problem underground. Or see if the same happens > with SLAB instead of SLUB. Not much use I'm afraid. This is all I get in the log [ 3161.300073] ============================================================================= [ 3161.300147] BUG kmalloc-512: Freechain corrupt The qemu process is then frozen, unkillable but reported in state "R" 13881 ? R 3:27 /usr/bin/qemu -S -M pc-0.13 -enable-kvm -m 1024 -smp 2,sockets=2,cores=1,threads=1 -nam The machine then progressively dies until it's frozen solid with no further error messages. I stupidly forgot to do an alt-sysrq-t prior to doing an alt-sysrq-b, but at least it responded to that. On the bright side I can reproduce it at will. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/