Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932261AbXAQKZK (ORCPT ); Wed, 17 Jan 2007 05:25:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932268AbXAQKZJ (ORCPT ); Wed, 17 Jan 2007 05:25:09 -0500 Received: from main.gmane.org ([80.91.229.2]:57309 "EHLO ciao.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932261AbXAQKZH (ORCPT ); Wed, 17 Jan 2007 05:25:07 -0500 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: Nicolas Bareil Subject: Linux 2.6.19.2 : Oops Date: Wed, 17 Jan 2007 11:21:59 +0100 Message-ID: <873b6a6ji0.fsf@boz.loft.chdir.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: 88.191.14.36 User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.0.92 (gnu/linux) Cancel-Lock: sha1:Cvj5LX4R1o740b1KNVtNsj2fl1Y= Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2529 Lines: 52 Hello, Since 2.6.19, I get the following Oops once a day, always with the same process, newspipe[1] which use a lot of CPU, threads and I/O. The kernel is patched by Grsecurity. The ext3 filesystem is on a software RAID device (the two disks are SATA2). I tested the hardware (RAM, SMART disks) but nothing seem problematic. kernel: BUG: unable to handle kernel NULL pointer dereference at virtual address 00000004 kernel: printing eip: kernel: b0176344 kernel: *pgd = 0 kernel: *pmd = 0 kernel: Oops: 0000 [#1] kernel: CPU: 0 kernel: EIP: 0060:[] Not tainted VLI kernel: EFLAGS: 00210286 (2.6.19.2-grsec #1) kernel: EIP is at do_generic_mapping_read+0x34/0x4e0 kernel: eax: d8deeb50 ebx: 0000001b ecx: 00000000 edx: ed6e1df4 kernel: esi: 00000000 edi: ed6e1e1c ebp: e6235a40 esp: ed6e1dac kernel: ds: 0068 es: 0068 ss: 0068 kernel: Process python (pid: 13360, ti=ed6e0000 task=daf1f030 task.ti=ed6e0000) kernel: Stack: d8deeb50 00000001 00000000 00001000 00000010 00000000 00000000 ed6e1df4 kernel: d8deeb50 00000010 00000000 00000010 00000010 0000000e 000105a5 00000000 kernel: 00000000 00001000 00000000 00000020 00000000 00000020 0000000f 00000000 kernel: Call Trace: kernel: [] generic_file_aio_read+0xf3/0x230 kernel: [] file_read_actor+0x0/0x130 kernel: [] do_sync_read+0xed/0x130 kernel: [] autoremove_wake_function+0x0/0x60 kernel: [] __vma_link+0x3c/0x70 kernel: [] vma_link+0x38/0xc0 kernel: [] vfs_read+0xd4/0x1c0 kernel: [] sys_read+0x4b/0x80 kernel: [] syscall_call+0x7/0xb kernel: [] restore_all+0x0/0x18 kernel: ======================= kernel: Code: 83 ec 70 8b 84 24 84 00 00 00 8d 54 24 48 89 d7 8b b4 24 88 00 00 00 fc 8b 00 89 54 24 1c 89 44 24 20 f3 a5 8b b4 24 90 00 00 00 <8b> 5e 04 8b 0e 8b b4 24 94 00 00 00 89 da c1 fa 0c 89 c8 89 54 kernel: EIP: [] do_generic_mapping_read+0x34/0x4e0 SS:ESP 0068:ed6e1dac My config is available on http://chdir.org/~nbareil/config-2.6.19.2-grsec.gz Thank you! Footnotes: [1] http://newspipe.sourceforge.net/ -- Nicolas Bareil http://chdir.org/~nico/ OpenPGP=0xAE4F7057 Fingerprint=34DB22091049FB2F33E6B71580F314DAAE4F7057 - 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/