From owner-freebsd-current@FreeBSD.ORG Fri Oct 15 12:33:41 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5BED916A4CE for ; Fri, 15 Oct 2004 12:33:41 +0000 (GMT) Received: from c00l3r.networx.ch (c00l3r.networx.ch [62.48.2.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8177F43D55 for ; Fri, 15 Oct 2004 12:33:40 +0000 (GMT) (envelope-from andre@freebsd.org) Received: (qmail 25895 invoked from network); 15 Oct 2004 12:33:23 -0000 Received: from dotat.atdotat.at (HELO [62.48.0.47]) ([62.48.0.47]) (envelope-sender ) by c00l3r.networx.ch (qmail-ldap-1.03) with SMTP for ; 15 Oct 2004 12:33:23 -0000 Message-ID: <416FC3A3.4060206@freebsd.org> Date: Fri, 15 Oct 2004 14:33:39 +0200 From: Andre Oppermann User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8a1) Gecko/20040520 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Robert Watson References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: freebsd-current@freebsd.org Subject: Re: 5.3-BETA7 install cd: kernel trap 12 with interrupts disabled X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Oct 2004 12:33:41 -0000 Robert Watson wrote: > On Fri, 15 Oct 2004, Guido van Rooij wrote: > >>It turns out this was a memory problem. Refitting the dimms was all >>that was needed to 'solve' the issue. The weird thing is that >>1. The BIOS had memtesting enabled and did not complain >>2. W2K seemed to install ok (though I never let it hit the disk) >>3. FBSD would repeatedly crash at exactly the same spot. >> >>I am beginning to wonder if we should have a boot option that enables a >>thorough memtest from within the kernel...(e.g. boot -m). > > I guess the old /dev/test_for_shoddy_workmanship driver is working :-). > > It's probably just bad luck -- BIOS memory testing is generally pretty > poor, and it could just be FreeBSD stored your root vnode pointer (or some > other critical thing) in a memory word that Win2K was using for an icon, > so a single bit twiddle did pretty different things. Glad it's fixed. I > occasionally wonder if we shouldn't build a memory tester into the FreeBSD > boot loader to help diagnose this sort of stuff, though. Not to run every > boot, but as a diagnostics option. That would be really cool and useful! -- Andre