Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752297AbYCLJvz (ORCPT ); Wed, 12 Mar 2008 05:51:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751385AbYCLJvp (ORCPT ); Wed, 12 Mar 2008 05:51:45 -0400 Received: from mail.syneticon.net ([213.239.212.131]:34087 "EHLO mail2.syneticon.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751368AbYCLJvo (ORCPT ); Wed, 12 Mar 2008 05:51:44 -0400 Message-ID: <47D7A7AA.8000302@wpkg.org> Date: Wed, 12 Mar 2008 10:51:38 +0100 From: Tomasz Chmielewski User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.8) Gecko/20061110 Mandriva/1.5.0.8-1mdv2007.1 (2007.1) Thunderbird/1.5.0.8 Mnenhy/0.7.4.666 MIME-Version: 1.0 Cc: Linux-Raid , LKML Subject: Re: sysfs Kernel BUG when RAID bitmap file has IO errors References: <47D7A502.6020701@wpkg.org> In-Reply-To: <47D7A502.6020701@wpkg.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit To: unlisted-recipients:; (no To-header on input) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2024 Lines: 59 Tomasz Chmielewski schrieb: (...) > Let's access "/sys/block/md0/md/dev-sdd1/super": > > # cat /sys/block/md0/md/dev-sdd1/super > > # dmesg -c > ------------[ cut here ]------------ > Kernel BUG at 78178626 [verbose debug info unavailable] It turns out a broken RAID bitmap file has nothing to do with it - the same happens on a different machine without a bitmap file: ------------[ cut here ]------------ Kernel BUG at 7817736a [verbose debug info unavailable] invalid opcode: 0000 [#1] Modules linked in: as_iosched nfs lockd nfs_acl sunrpc bonding dm_mirror dm_snapshot e1000 sata_mv Pid: 2494, comm: cat Not tainted (2.6.24.3-1 #1) EIP: 0060:[<7817736a>] EFLAGS: 00010212 CPU: 0 EIP is at sysfs_read_file+0x88/0xd4 EAX: 00000001 EBX: 961b5880 ECX: 00000000 EDX: 964ef360 ESI: 00001000 EDI: 964ef3c0 EBP: 9705bd04 ESP: 971f1f54 DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 Process cat (pid: 2494, ti=971f0000 task=970ad9a0 task.ti=971f0000) Stack: 96443080 0804b4d8 00001000 0804e000 961b5894 7835f6f0 96193400 0804e000 781772e2 00001000 78149bd5 971f1fa0 00001000 96193400 fffffff7 0804e000 971f0000 78149f03 971f1fa0 00000000 00000000 00000000 00000003 0804e000 Call Trace: [<781772e2>] sysfs_read_file+0x0/0xd4 [<78149bd5>] vfs_read+0x88/0x10a [<78149f03>] sys_read+0x41/0x67 [<78103bba>] syscall_call+0x7/0xb ======================= Code: c0 74 61 8b 47 18 8b 4b 0c 8b 40 04 89 43 24 89 e8 8b 74 24 14 8b 57 14 ff 16 89 c6 89 f8 e8 18 0b 00 00 81 fe ff 0f 00 00 7e 04 <0f> 0b eb fe 85 f6 78 31 c7 43 20 00 00 00 00 89 33 eb 07 be f4 EIP: [<7817736a>] sysfs_read_file+0x88/0xd4 SS:ESP 0068:971f1f54 ---[ end trace e39b88900c26a529 ]--- Certainly, it doesn't happen with 2.6.18 kernels. -- Tomasz Chmielewski http://wpkg.org -- 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/