From owner-freebsd-current Thu May 2 8:17:18 2002 Delivered-To: freebsd-current@freebsd.org Received: from mail.speakeasy.net (mail14.speakeasy.net [216.254.0.214]) by hub.freebsd.org (Postfix) with ESMTP id 210BB37B400 for ; Thu, 2 May 2002 08:17:12 -0700 (PDT) Received: (qmail 32414 invoked from network); 2 May 2002 15:17:10 -0000 Received: from unknown (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) by mail14.speakeasy.net (qmail-ldap-1.03) with DES-CBC3-SHA encrypted SMTP for ; 2 May 2002 15:17:10 -0000 Received: from laptop.baldwin.cx (gw1.twc.weather.com [216.133.140.1]) by server.baldwin.cx (8.11.6/8.11.6) with ESMTP id g42FH9F07854; Thu, 2 May 2002 11:17:09 -0400 (EDT) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.5.2 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <1020351976.4519.2.camel@hry.muc.wearix.com> Date: Thu, 02 May 2002 11:16:11 -0400 (EDT) From: John Baldwin To: Harald Schmalzbauer Subject: Re: CD-Boot hangs on rootmounting MD (+DP1 crashes) Cc: freebsd-current@FreeBSD.org Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 02-May-2002 Harald Schmalzbauer wrote: > Am Do , 2002-05-02 um 17.44 schrieb John Baldwin: >> >> On 02-May-2002 Harald Schmalzbauer wrote: >> > Am Do , 2002-05-02 um 13.29 schrieb Harald Schmalzbauer: >> > >> > PXEbooting the -stable kernel.gz and mfsroot results in the same system >> > hang (mounting root from ufs:/dev/md0c). >> > >> > DP1 crashes with the following: >> > unknown: can't assign resources (port) >> > unknown: can't assign resources (memory) >> > psmcpnp0: irq resource info is missing; assuming irq 12 >> > >> > Fatal trap12: page fault while in kernel mode >> > fault virtual address = 0x0 >> > fault code = supervisor read, page not present >> > instruction pointer = 0x8:0xc164cac1 >> > stack pointer = 0x10:0xcb931d00 >> > frame pointer = 0x10:0xcb931d1c >> > 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 = 27 (irq10: sn0) >> > trap number = 12 >> > panic: page fault >> >> Can you stick ddb in this kernel adn get a traceback? It's a NULL >> pointer dereference bug. >> >> Actually, for DP1, isn't ddb already in the kernel? > > Of course, but somebody needs to tell me what to do (I wrote the last > line of code 12 years ago in Pascal, and I've never used gdb) > > I think I can remember that there is some debuging FAQ but I can't read > it NOW (perhaps at the weekend) > > If it isn't too complicated and understanding the things I'm typing is > not needed, just tell me what to do (outside the list?) Well, when you boot dp1 you should get a 'db>' prompt after the panic. Just type 't' to get a backtrace, then mail the contents of that trace to the list. -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message