From owner-freebsd-hackers@FreeBSD.ORG Mon Aug 27 13:54:26 2007 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0849C16A417 for ; Mon, 27 Aug 2007 13:54:26 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from speedfactory.net (mail6.speedfactory.net [66.23.216.219]) by mx1.freebsd.org (Postfix) with ESMTP id A7D7B13C467 for ; Mon, 27 Aug 2007 13:54:25 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from server.baldwin.cx (unverified [66.23.211.162]) by speedfactory.net (SurgeMail 3.8k2) with ESMTP id 205598024-1834499 for multiple; Mon, 27 Aug 2007 09:54:37 -0400 Received: from zion.baldwin.cx (zion.baldwin.cx [192.168.0.7]) (authenticated bits=0) by server.baldwin.cx (8.13.8/8.13.8) with ESMTP id l7RDsH9Q027472; Mon, 27 Aug 2007 09:54:17 -0400 (EDT) (envelope-from jhb@freebsd.org) From: John Baldwin To: freebsd-hackers@freebsd.org Date: Mon, 27 Aug 2007 08:55:48 -0400 User-Agent: KMail/1.9.7 References: <7ed534d5904b6579416f3c1be82c2792@gmail.com> In-Reply-To: <7ed534d5904b6579416f3c1be82c2792@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200708270855.48720.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-2.0.2 (server.baldwin.cx [192.168.0.1]); Mon, 27 Aug 2007 09:54:17 -0400 (EDT) X-Virus-Scanned: ClamAV 0.88.3/4075/Mon Aug 27 08:49:55 2007 on server.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-4.4 required=4.2 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.1.3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on server.baldwin.cx Cc: Joshua Isom Subject: Re: Debugging problems on amd64-current X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Aug 2007 13:54:26 -0000 On Friday 24 August 2007 03:13:08 am Joshua Isom wrote: > As some may remember, about a month ago I asked a question about my dvd > drive, apparently an sata atapi drive. Updating to a 7.0-current/amd64 > kernel did allow it to be recognized and I've been able to use it. But > recently I'd been noticing a kernel crash I could create. My computer > is headless so I didn't get any dump(savecore saved nothing). If I > used gdb and stepped after a segfault, it'd crash the system. Pressing > the power button did nothing, and pressing and holding it was required > to get it to do something. Although I knew there was a problem, I > figured I'd update my world to match my kernel(a few apps didn't work > with the mismatch but those I needed did). It went smoothly, until I > tried running gdb. Have you tried breaking into the kernel debugger? It sounds like you've hit a deadlock of some sort. -- John Baldwin