From owner-freebsd-questions@FreeBSD.ORG Sat Jun 17 02:17:12 2006 Return-Path: X-Original-To: questions@freebsd.org Delivered-To: freebsd-questions@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 764F216A474 for ; Sat, 17 Jun 2006 02:17:12 +0000 (UTC) (envelope-from micahjon@ywave.com) Received: from relay2.av-mx.com (relay2.av-mx.com [137.118.16.124]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0BA9A43D48 for ; Sat, 17 Jun 2006 02:17:11 +0000 (GMT) (envelope-from micahjon@ywave.com) X-Virus-Scan-Time: 0 Received: from [137.118.16.60] (HELO mx2.av-mx.com) by relay2.av-mx.com (CommuniGate Pro SMTP 4.2.10) with SMTP id 305139172 for questions@freebsd.org; Fri, 16 Jun 2006 22:17:11 -0400 Received: (qmail 25782 invoked from network); 17 Jun 2006 02:17:10 -0000 Received: from dsl30019.ywave.com (HELO ?192.168.1.65?) (micahjon@ywave.com@216.227.117.19) by 0 with SMTP; 17 Jun 2006 02:17:10 -0000 X-CLIENT-IP: 216.227.117.19 X-CLIENT-HOST: dsl30019.ywave.com Message-ID: <44936624.80801@ywave.com> Date: Fri, 16 Jun 2006 19:17:08 -0700 From: Micah User-Agent: Thunderbird 1.5.0.4 (X11/20060611) MIME-Version: 1.0 To: Matthew Navarre References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: questions@freebsd.org Subject: Re: Random panics on FreeeBSD 6.0 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: Sat, 17 Jun 2006 02:17:12 -0000 Matthew Navarre wrote: > I've got an AMD Sempron machine running FreeBSD 6.0 that's been > experiencing random panics while trying to build world. In fact it just > paniced now, with no activity. > > The panic message is TPTE at 0xbfc20624 IS ZERO @ VA 08100000 > bad pte > > This started last night while I was portupgrading ruby and I got random > apps segfaulting, mostly gcc, so I suspected bad memory. I installed new > memory today, tried to buildworld. And *BAM* panic: bad pte > > I'm still guessing that this is a hardware problem, and not software but > I'm not sure. If anyone can give me a clue I'd appreciate it. > > Machine details: > AMD Sempron > ECS K8M800-M2 mainboard > 1 GB Kingston PC-3200. > > Thanks, > Matt First, a quick Google of "bad pte" turns up some ideas. Try disabling or changing APIC and/or ACPI settings. Make sure your swap partition is error free and has enough room. Google a bit more just on the lists.freebsd.org site for several possibilities. For hardware, you can try memtest86+ to check to make sure the new memory is good. There are other stress tests you can run as well - I usually use the ultimate boot CD for that stuff. Other possible problems are faulty or too small power supply; too much heat on CPU, RAM, or expansion boards; faulty expansion cards and/or components; or faulty hard drive. HTH, Micah