From owner-freebsd-stable@FreeBSD.ORG Fri Dec 26 17:18:46 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E991C106564A for ; Fri, 26 Dec 2008 17:18:46 +0000 (UTC) (envelope-from glen.j.barber@gmail.com) Received: from mail-bw0-f19.google.com (mail-bw0-f19.google.com [209.85.218.19]) by mx1.freebsd.org (Postfix) with ESMTP id 778798FC08 for ; Fri, 26 Dec 2008 17:18:46 +0000 (UTC) (envelope-from glen.j.barber@gmail.com) Received: by bwz12 with SMTP id 12so10548998bwz.19 for ; Fri, 26 Dec 2008 09:18:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:mime-version:content-type:content-transfer-encoding :content-disposition; bh=I6aKKnUjYYJ8aVCCkzEgQTZiLGFXdUXWoBpC/eGBf8M=; b=FVUAQD75U8rx+dWvc2Wno084VRWpNMYSC6Zh81Sk9aPBmxV7TRdkOivEsBHc2QEjvs 5CM4+ENIU3R1Z1OeL4TOURtzhOqxe2V4XMJBPLvz4PrGbzOVN/s8D0s7n3wE137m1jk6 qIxBeNdRGNAwkUiofet4vhWBmScb/IRhuuGmY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type :content-transfer-encoding:content-disposition; b=Gt/EMXQimbIs363fRCmPczB4EEt1VgL3SB/w9hvD7qRvk1DZ6luNY5TlyYe2OyVgzd 7MVnuOsUgzMsh3FNv2prL/wzMbj7pl+iOasEQZdAvBzNws45NOt8aaIduBC16aTMqd4Z 4CI3MqcHV0/k1QDy3O22LvpNuLU1Kxn8rhKBw= Received: by 10.223.106.15 with SMTP id v15mr8313869fao.15.1230311925240; Fri, 26 Dec 2008 09:18:45 -0800 (PST) Received: by 10.223.110.142 with HTTP; Fri, 26 Dec 2008 09:18:45 -0800 (PST) Message-ID: <4ad871310812260918h538d82c7s2f72f254bf08c26c@mail.gmail.com> Date: Fri, 26 Dec 2008 12:18:45 -0500 From: "Glen Barber" To: freebsd-stable MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Subject: Kernel Trap during installworld caused unrecoverable system X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Dec 2008 17:18:47 -0000 Hi folks. I was unfortunate enough to encounter a kernel trap in single user mode yesterday when upgrading from 7.1-RC1 to -RC2 using the typical build/install world. I'm still not sure what caused the trap, as the system was rebooting when I saw the screen. As one would expect, this led to an irrecoverable system; the system would automatically drop me into single user mode, as it could only mount the root directory; /bin/sh and /bin/csh would not work (had to use /restore/csh for the minimal digging I actually could do). So, now to the question. Given I could not mount anything other than /, would there have been any way for me to gather debugging information on what caused this failure? (FWIW, I am certain it is not a hardware failure.) Regards, -- Glen Barber