From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932306AbWGGXIl (ORCPT ); Fri, 7 Jul 2006 19:08:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932371AbWGGXIl (ORCPT ); Fri, 7 Jul 2006 19:08:41 -0400 Received: from tornado.reub.net ([202.89.145.182]:56530 "EHLO tornado.reub.net") by vger.kernel.org with ESMTP id S932306AbWGGXIk (ORCPT ); Fri, 7 Jul 2006 19:08:40 -0400 Message-ID: <44AEE978.8090703@reub.net> Date: Sat, 08 Jul 2006 11:08:40 +1200 From: Reuben Farrelly User-Agent: Thunderbird 3.0a1 (Windows/20060707) MIME-Version: 1.0 To: Andrew Morton CC: linux-kernel@vger.kernel.org Subject: Re: 2.6.17-mm6 References: <20060703030355.420c7155.akpm@osdl.org> <44AE268F.7080409@reub.net> <20060707023518.f621bcf2.akpm@osdl.org> <44AECEDD.201@reub.net> <20060707143854.4a8fd106.akpm@osdl.org> In-Reply-To: <20060707143854.4a8fd106.akpm@osdl.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 8/07/2006 9:38 a.m., Andrew Morton wrote: > Reuben Farrelly wrote: >> >>> The core slab data structures were wrecked. For kmalloc(), no less. >>> Something secretly destroyed your kernel, and it could be anything. Nice. >> Having now turned on slab debugging, is it possibly related to this message >> which appeared in my log when I booting up earlier? >> >> Jul 8 02:49:39 tornado kernel: EXT3-fs: mounted filesystem with ordered data mode. >> Jul 8 02:49:39 tornado kernel: Adding 497972k swap on /dev/sdc9. Priority:-1 >> extents:1 across:497972k >> Jul 8 02:49:40 tornado kernel: ip_tables: (C) 2000-2006 Netfilter Core Team >> Jul 8 02:49:40 tornado kernel: Netfilter messages via NETLINK v0.30. >> Jul 8 02:49:40 tornado kernel: ip_conntrack version 2.4 (4060 buckets, 32480 >> max) - 288 bytes per conntrack >> Jul 8 02:49:40 tornado kernel: Slab corruption: start=ffff81003efd7000, len=4096 >> Jul 8 02:49:40 tornado kernel: 170: ff ff ff ff 00 00 00 00 6b 6b 6b 6b 6b 6b 6b 6b >> Jul 8 02:49:40 tornado kernel: e1000: eth0: e1000_watchdog: NIC Link is Up 1000 >> Mbps Full Duplex >> Jul 8 02:49:40 tornado kernel: GRE over IPv4 tunneling driver >> > > Yikes! Until we fix that there's no point in looking at anything else. > > CONFIG_DEBUG_PAGEALLOC would nail this bug in a flash, but x86_64 doesn't > implement the damn thing :( > > So if this is repeatable it would be of some value if you can work out what > causes it - start by disabling netfilter. It hasn't come back after a quick reboot, but I'll be more vigilant than usual for it. With that warning above and the nasty crash before that which maybe related, I'm thinking that it's not just a one-off thing. reuben