From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753980AbXDPWjt (ORCPT ); Mon, 16 Apr 2007 18:39:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753981AbXDPWjt (ORCPT ); Mon, 16 Apr 2007 18:39:49 -0400 Received: from mx1.redhat.com ([66.187.233.31]:39389 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753980AbXDPWjs (ORCPT ); Mon, 16 Apr 2007 18:39:48 -0400 Message-ID: <4623FB29.1000603@redhat.com> Date: Mon, 16 Apr 2007 18:39:37 -0400 From: Chuck Ebbert Organization: Red Hat User-Agent: Thunderbird 1.5.0.10 (X11/20070302) MIME-Version: 1.0 To: Brad Campbell , Jens Axboe , Neil Brown CC: lkml Subject: Re: [OOPS] 2.6.21-rc6-git5 in cfq_dispatch_insert References: <4621FAF0.7000705@wasp.net.au> <46220339.9080205@wasp.net.au> In-Reply-To: <46220339.9080205@wasp.net.au> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Brad Campbell wrote: > Brad Campbell wrote: >> G'day all, >> >> All I have is a digital photo of this oops. (It's 3.5mb). I have >> serial console configured, but Murphy is watching me carefully and I >> just can't seem to reproduce it while logging the console output. >> > > And as usual, after trying to capture one for 4 days, I get one 10 mins > after I've sent the E-mail :) > > I think I've just found a way to make this easier to reproduce as > /dev/sdd was not even mounted this > time. I just cold booted and started an md5sum -c run on a directory of > about 180GB. > > [ 2566.192665] BUG: unable to handle kernel NULL pointer dereference at > virtual address 0000005c > [ 2566.218242] printing eip: > [ 2566.226362] c0203169 > [ 2566.232906] *pde = 00000000 > [ 2566.241274] Oops: 0000 [#1] > [ 2566.249637] Modules linked in: > [ 2566.258832] CPU: 0 > [ 2566.258833] EIP: 0060:[] Not tainted VLI > [ 2566.258834] EFLAGS: 00010082 (2.6.21-rc6-git5 #1) > [ 2566.296146] EIP is at cfq_dispatch_insert+0x19/0x70 > [ 2566.310761] eax: f7a0eae0 ebx: f7a0cb28 ecx: e2f869e8 edx: > 00000000 > [ 2566.331076] esi: f79fea7c edi: f7d04ac0 ebp: 00000000 esp: > f6945de0 > [ 2566.351388] ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068 > [ 2566.368843] Process md5sum (pid: 2875, ti=f6944000 task=f68f4ad0 > task.ti=f6944000) > [ 2566.390975] Stack: 00000000 f79fea7c f7d04ac0 00000000 c02032d9 > f6ae5ef0 c0133411 00001000 > [ 2566.416414] 00000008 00000000 00000004 0b582fd4 f79fea7c > f7d04ac0 f79fea7c 00000000 > [ 2566.441870] c0203519 f7a0cb28 f7a0cb28 f79e0000 00000282 > c01fb7a9 00000000 c016ea4d > [ 2566.467326] Call Trace: > [ 2566.475236] [] __cfq_dispatch_requests+0x79/0x170 > [ 2566.492224] [] do_generic_mapping_read+0x281/0x470 > [ 2566.509473] [] cfq_dispatch_requests+0x69/0x90 > [ 2566.525681] [] elv_next_request+0x39/0x130 > [ 2566.540850] [] bio_endio+0x5d/0x90 > [ 2566.553942] [] scsi_request_fn+0x45/0x280 > [ 2566.568851] [] blk_run_queue+0x32/0x70 > [ 2566.582982] [] scsi_next_command+0x30/0x50 > [ 2566.598154] [] scsi_end_request+0x9b/0xc0 > [ 2566.613063] [] scsi_io_completion+0x81/0x330 > [ 2566.628751] [] scsi_delete_timer+0xb/0x20 > [ 2566.643661] [] ata_scsi_qc_complete+0x65/0xd0 > [ 2566.659613] [] sd_rw_intr+0x8b/0x220 > [ 2566.673222] [] ata_altstatus+0x1c/0x20 > [ 2566.687352] [] ata_hsm_move+0x14d/0x3f0 > [ 2566.701744] [] scsi_finish_command+0x40/0x60 > [ 2566.717434] [] scsi_softirq_done+0x6f/0xe0 > [ 2566.732604] [] sil_interrupt+0x81/0x90 > [ 2566.746733] [] blk_done_softirq+0x58/0x70 > [ 2566.761644] [] __do_softirq+0x6f/0x80 > [ 2566.775516] [] do_softirq+0x27/0x30 > [ 2566.788866] [] do_IRQ+0x3e/0x80 > [ 2566.801177] [] common_interrupt+0x23/0x28 > [ 2566.816090] ======================= > [ 2566.826793] Code: 3e 05 f0 ff e9 47 ff ff ff 89 f6 8d bc 27 00 00 00 > 00 83 ec 10 89 1c 24 89 6c > 24 0c 89 74 24 04 89 7c 24 08 89 c3 89 d5 8b 40 0c <8b> 72 5c 8b 78 04 > 89 d0 e8 4a fa ff ff 8b 45 14 > 89 ea 25 01 80 > [ 2566.886586] EIP: [] cfq_dispatch_insert+0x19/0x70 SS:ESP > 0068:f6945de0 > [ 2566.909179] Kernel panic - not syncing: Fatal exception in interrupt cfq_dispatch_insert() was called with rq == 0. This one is getting really annoying... and md is involved again (RAID0 this time.)