From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752814AbXCUNPN (ORCPT ); Wed, 21 Mar 2007 09:15:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752797AbXCUNPN (ORCPT ); Wed, 21 Mar 2007 09:15:13 -0400 Received: from main.gmane.org ([80.91.229.2]:53341 "EHLO ciao.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752814AbXCUNPK (ORCPT ); Wed, 21 Mar 2007 09:15:10 -0400 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: Dale Blount Subject: Re: PROBLEM: null pointer dereference in =?utf-8?b?Y2ZxX2Rpc3BhdGNoX3JlcXVlc3Rz?= (2.6.21-rc2 and 2.6.20) Date: Wed, 21 Mar 2007 13:07:11 +0000 (UTC) Message-ID: References: <1172685755.5773.6.camel@dwillia2-linux.ch.intel.com> <200703011308.28266.linux@f-seidel.de> <20070301123057.GO23985@kernel.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: main.gmane.org User-Agent: Loom/3.14 (http://gmane.org/) X-Loom-IP: 66.211.211.211 (Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.2) Gecko/20070224 FireFox/2.0.0.1) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > I'm puzzled why this is hitting Dan, but no one else has reported > anything. Dan, did 2.6.19 work for you? Actually, I believe it is happening to me too. This is on a 4-disk raid5 with one failed disk on two 2-port sata_sil pci controller cards. The BUG below is from 2.6.20.3, but I will try 2.6.21-rc4 tonight. The disk didn't fail until 2.6.20, so I don't know if 2.6.19 would have worked or not. BUG: unable to handle kernel NULL pointer dereference at virtual address 0000005c printing eip: *pde = 00000000 Oops: 0000 [#1] PREEMPT SMP Modules linked in: ipv6 raid456 xor md_mod e1000 usbcore ext3 jbd mbcache sata_sil sd_mod sr_mod cdrom generic ide_core ata_piix libata CPU: 0 EIP: 0060:[] Not tainted VLI EFLAGS: 00010086 (2.6.20-ARCH #1) EIP is at cfq_dispatch_insert+0x19/0x70 eax: c2bc1340 ebx: 00000000 ecx: 00000049 edx: 00000000 esi: c298802c edi: f7c17cc0 ebp: 00e47352 esp: f18addfc ds: 007b es: 007b ss: 0068 Process rsync (pid: 3698, ti=f18ac000 task=dfe97570 task.ti=f18ac000) Stack: 00000000 c298ce3c f7c17cc0 00e47352 c0220bd9 00000040 c2b3cd40 c2b3c4a8 cafa6500 c0294750 00000000 00000000 00000004 d8ed1480 00000000 cafa6500 c298802c c29f0800 c2b3c000 c298802c c0215690 00000000 c0294750 cafa6500 Call Trace: [] cfq_dispatch_requests+0xf9/0x4e0 [] scsi_done+0x0/0x20 [] elv_next_request+0x20/0x1d0 [] scsi_done+0x0/0x20 [] scsi_dispatch_cmd+0x146/0x230 [] scsi_request_fn+0x194/0x2d0 [] blk_run_queue+0x58/0x70 [] scsi_next_command+0x30/0x50 [] scsi_end_request+0xab/0xe0 [] scsi_io_completion+0x86/0x370 [] ata_hsm_qc_complete+0x90/0x110 [libata] [] sd_rw_intr+0x2b/0x200 [sd_mod] [] scsi_finish_command+0x49/0x60 [] blk_done_softirq+0x58/0x70 [] __do_softirq+0x82/0xf0 [] do_softirq+0x37/0x40 [] irq_exit+0x45/0x50 [] do_IRQ+0x45/0x80 [] common_interrupt+0x23/0x28 ======================= Code: ae 40 ee ff e9 25 ff ff ff 0f 0b eb fe 0f 0b eb fe 90 83 ec 10 89 1c 24 89 d3 89 74 24 04 89 c6 89 7c 24 08 89 6c 24 0c 8b 40 0c <8b> 7a 5c 8b 68 04 89 d0 e8 7a fe ff ff 8b 43 14 89 da 25 01 80 EIP: [] cfq_dispatch_insert+0x19/0x70 SS:ESP 0068:f18addfc <0>Kernel panic - not syncing: Fatal exception in interrupt