From owner-freebsd-questions@FreeBSD.ORG Thu Jun 5 10:02:01 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E5AC1106564A for ; Thu, 5 Jun 2008 10:02:01 +0000 (UTC) (envelope-from mark@lightflowinterrupted.com) Received: from mc.neutelligent.com (mc.neutelligent.com [66.230.204.9]) by mx1.freebsd.org (Postfix) with ESMTP id B2E728FC0A for ; Thu, 5 Jun 2008 10:02:01 +0000 (UTC) (envelope-from mark@lightflowinterrupted.com) Received: from reaper (host86-168-193-61.range86-168.btcentralplus.com [86.168.193.61]) by mc.neutelligent.com (Postfix) with ESMTP id 04FB128460 for ; Thu, 5 Jun 2008 06:02:00 -0400 (EDT) From: <1@movesmountains.com> Sender: "Mark" To: Date: Thu, 5 Jun 2008 10:59:36 +0100 Message-ID: <019b01c8c6f2$ddc7e730$f001a8c0@asgard.movesmountains.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcjG8tyIl67PL91/RH2wY7NeaTGpUA== X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1914 Subject: Query on kgdb output X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 Jun 2008 10:02:02 -0000 Hi, I'm seeing regular kernel panics on my new box with a fresh install of 7.0-RELEASE. I'm trying to get some information out of kgdb by following the instructions in the handbook - however, I'm getting a 'cannot access memory' message when I try it: odin2008# kgdb kernel.debug /var/crash/vmcore.1 [GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"] GNU gdb 6.1.1 [FreeBSD] Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-marcel-freebsd". Cannot access memory at address 0x2fd9 (kgdb) where #0 0x00000000 in ?? () (kgdb) quit Am I doing something wrong, or does this point to a hardware failure? (I'm also seeing missing characters in /var/log/messages, which I addressed in a separate mail; not sure if it's related). Any help appreciated! Yours, Mark