From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail6.bemta8.messagelabs.com (mail6.bemta8.messagelabs.com [216.82.243.55]) by kanga.kvack.org (Postfix) with ESMTP id 102796B0024 for ; Wed, 1 Jun 2011 02:31:18 -0400 (EDT) Message-ID: <4DE5DCA8.7070704@fnarfbargle.com> Date: Wed, 01 Jun 2011 14:31:04 +0800 From: Brad Campbell MIME-Version: 1.0 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: owner-linux-mm@kvack.org List-ID: To: Hugh Dickins Cc: Andrea Arcangeli , Borislav Petkov , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-mm 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org