From owner-freebsd-current@FreeBSD.ORG Thu Feb 21 16:48:38 2013 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 9A388988 for ; Thu, 21 Feb 2013 16:48:38 +0000 (UTC) (envelope-from jmg@h2.funkthat.com) Received: from h2.funkthat.com (gate2.funkthat.com [208.87.223.18]) by mx1.freebsd.org (Postfix) with ESMTP id 7F4E23F1 for ; Thu, 21 Feb 2013 16:48:38 +0000 (UTC) Received: from h2.funkthat.com (localhost [127.0.0.1]) by h2.funkthat.com (8.14.3/8.14.3) with ESMTP id r1LGmWhW079767 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 21 Feb 2013 08:48:32 -0800 (PST) (envelope-from jmg@h2.funkthat.com) Received: (from jmg@localhost) by h2.funkthat.com (8.14.3/8.14.3/Submit) id r1LGmVW1079766; Thu, 21 Feb 2013 08:48:31 -0800 (PST) (envelope-from jmg) Date: Thu, 21 Feb 2013 08:48:31 -0800 From: John-Mark Gurney To: Shawn Webb Subject: Re: r247095 Boot Failure Message-ID: <20130221164831.GU55866@funkthat.com> Mail-Followup-To: Shawn Webb , FreeBSD-current References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.3i X-Operating-System: FreeBSD 7.2-RELEASE i386 X-PGP-Fingerprint: 54BA 873B 6515 3F10 9E88 9322 9CB1 8F74 6D3F A396 X-Files: The truth is out there X-URL: http://resnet.uoregon.edu/~gurney_j/ X-Resume: http://resnet.uoregon.edu/~gurney_j/resume.html X-to-the-FBI-CIA-and-NSA: HI! HOW YA DOIN? can i haz chizburger? X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.2.2 (h2.funkthat.com [127.0.0.1]); Thu, 21 Feb 2013 08:48:32 -0800 (PST) Cc: FreeBSD-current X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 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: Thu, 21 Feb 2013 16:48:38 -0000 Shawn Webb wrote this message on Thu, Feb 21, 2013 at 10:28 -0500: > I'm on r247095. My box is failing to boot on a Dell Precision T7500. I'm > running ZFS as root with a mirrored root pool. > > Here's a pic of the box failing: > https://lh5.googleusercontent.com/-Lq_jlX8of0o/USY4cqZ5BOI/AAAAAAAAGoI/Nd1LGPbFjHc/s1112/IMG_20130221_100723.jpg > > There isn't much useful information in the pic. No crash dump is generated. > Where do I go from here? > > I can boot into kernel.old and that works as a workaround for now. Some how, my changes to gcc in r247012 is causing this, even when using the default of clang as cc... I was able to reproduce a crash myself, and then I just backed my change and the new kernel booted... I'm about to do a binary diff between the broken kernel and the new kernel (since I only installed the kernel, not userland) and figure out which part of the system.. But clearly, we are still using gcc somehow in our kernel builds... If I don't figure out what it is in a few hours, I'll back out the change... -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."