From owner-freebsd-current@FreeBSD.ORG Tue Nov 4 10:01:56 2003 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 3675E16A4CF for ; Tue, 4 Nov 2003 10:01:56 -0800 (PST) Received: from mail.speakeasy.net (mail5.speakeasy.net [216.254.0.205]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3269043FF7 for ; Tue, 4 Nov 2003 10:01:54 -0800 (PST) (envelope-from jhb@FreeBSD.org) Received: (qmail 3183 invoked from network); 4 Nov 2003 18:01:53 -0000 Received: from unknown (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender )encrypted SMTP for ; 4 Nov 2003 18:01:53 -0000 Received: from laptop.baldwin.cx (gw1.twc.weather.com [216.133.140.1]) by server.baldwin.cx (8.12.9/8.12.9) with ESMTP id hA4I1Tce070177; Tue, 4 Nov 2003 13:01:30 -0500 (EST) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.5.4 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <200311041620.hA4GKBZd064164@green.bikeshed.org> Date: Tue, 04 Nov 2003 13:01:29 -0500 (EST) From: John Baldwin To: "Brian F. Feldman" X-Spam-Checker-Version: SpamAssassin 2.55 (1.174.2.19-2003-05-19-exp) cc: current@freebsd.org Subject: Re: Kernel Panic 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: Tue, 04 Nov 2003 18:01:56 -0000 On 04-Nov-2003 Brian F. Feldman wrote: > Steve Ames wrote: >> >> For the past few weeks my -CURRENT system has been locking up. With a >> recent kernel (from 11/2) the following appears: >> >> Fault trap 12: page fault while in kernel mode >> fault virtual address = 0x24 >> fault code = supervisor read, page not present >> instruction pointer = 0x8:0xc049d0db >> stack pointer = 0x10:0xe009cc88 >> frame pointer = 0x10:0xe009cc9c >> code segment = base 0x0, limit 0xfffff, type 0x1b >> = DPL 0, pres 1, def32 1, gran 1 >> processor eflags = interrupt enabled, resume, IOPL = 0 >> current process = 23 (irq10: dc0) >> trap number = 12 >> panic: page fault >> syncing disks, buffers remaining... 6800 6800 >> >> That bit about the current process and 'dc0' kind of makes me believe >> it was a dc driver issue? I may replace that card (with an ethernet >> card that doesn't use dc) and see if the problem goes away. >> >> Am I correct in believing this is a dc issue? If so, hope the above >> helps in diagnosing the problem. Otherwise... any other pointers? > instruction pointer = 0x8:0xc049d0db > That will tell you exactly where the problem is... Specifically, reproduce this panic using a kernel built with debug symbols, then do 'gdb -k kernel.debug' in the kernel build directory and then 'l *0xc049d0db' (or whatever the instruction pointer address is) to get the source and line of the panic. -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/