Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762490AbXEPUMV (ORCPT ); Wed, 16 May 2007 16:12:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756415AbXEPUMP (ORCPT ); Wed, 16 May 2007 16:12:15 -0400 Received: from www17.your-server.de ([213.133.104.17]:4184 "EHLO www17.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754940AbXEPUMO (ORCPT ); Wed, 16 May 2007 16:12:14 -0400 Message-ID: <1179346302.464b657e70b7b@213.133.104.17> Date: Wed, 16 May 2007 22:11:42 +0200 From: thomas@m3y3r.de To: linux-kernel@vger.kernel.org Cc: mingo@elte.hu, tglx@linutronix.de Subject: [BUG] unable to handle kernel NULL pointer dereference at virtual address 00000003 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT User-Agent: Internet Messaging Program (IMP) 3.2.5 X-Originating-IP: 84.59.60.74 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1200 Lines: 39 This Oops happens under heavy load with http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7b104bcb8e460e45a1aebe3da9b86aacdb4cab12 head. Also i run the powertop tool in parallel of the build process. This is what i could capture with netconsole: "BUG: unable to handle kernel NULL pointer dereference at virtual address 00000003 printing eip: c0136e32 *pde = 00000000 Oops: 0000 [#1] SMP Modules linked in: applesmc evdev snd_seq snd_seq_device" System.map says: c0136d47 t tick_nohz_handler c0136e30 t match_entries c0136e5a t tstats_open match_entries is part of kernel/time/timer_stats.c and only used within timer_stats.c I guess without stack values this is hard to debug... I cc'ed Ingo Molnar and Thomas Gleixner as they signed of the initial patch for the timer_stats support: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=82f67cd9fca8c8762c15ba7ed0d5747588c1e221 mfg thomas - 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/