From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760319AbXGJQI0 (ORCPT ); Tue, 10 Jul 2007 12:08:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755100AbXGJQIT (ORCPT ); Tue, 10 Jul 2007 12:08:19 -0400 Received: from extu-mxob-1.symantec.com ([216.10.194.28]:41677 "EHLO extu-mxob-1.symantec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754535AbXGJQIT (ORCPT ); Tue, 10 Jul 2007 12:08:19 -0400 Date: Tue, 10 Jul 2007 17:07:35 +0100 (BST) From: Hugh Dickins X-X-Sender: hugh@blonde.wat.veritas.com To: Charles Shannon Hendrix cc: linux-kernel@vger.kernel.org Subject: Re: BUG: kernel crash report, odd... In-Reply-To: <20070709220848.GA6782@widomaker.com> Message-ID: References: <20070709220848.GA6782@widomaker.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Brightmail-Verdict: VlJEQwAAAAIAAAABAAAAAAAAAAEAAAAAAAAAAmluYm94AHNoYW5ub25Ad2lkb21ha2VyLmNvbQBsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnAA== X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 9 Jul 2007, Charles Shannon Hendrix wrote: > > A system I was using a few minutes ago dumped this to the syslog: > > Jul 9 17:50:38 daydream kernel: [76022.613000] BUG: unable to handle > kernel NULL pointer dereference at virtual address 00000010 > Jul 9 17:50:38 daydream kernel: [76022.613000] printing eip: > Jul 9 17:50:38 daydream kernel: [76022.613000] c01ace66 > Jul 9 17:50:38 daydream kernel: [76022.613000] *pde = 00000000 > Jul 9 17:50:38 daydream kernel: [76022.613000] Oops: 0000 [#1] > > There was no other information either before or after. Something simple you can do, which I didn't see mentioned yet: look up the entries before and after c01ace66 in that 2.6.20 kernel's System.map, then post the output of objdump -d --start-address=0xbefore --stop-address=0xafter vmlinux so people here can see the function name and the oopsing instruction in its context. May not help at all, but well worth trying. Hugh