From owner-freebsd-stable Thu Nov 15 3: 4:40 2001 Delivered-To: freebsd-stable@freebsd.org Received: from emmi.physik.TU-Berlin.DE (emmi.physik.TU-Berlin.DE [130.149.160.103]) by hub.freebsd.org (Postfix) with ESMTP id 1030E37B419 for ; Thu, 15 Nov 2001 03:04:34 -0800 (PST) Received: (from ibex@localhost) by emmi.physik.TU-Berlin.DE (8.11.6/8.11.6) id fAFB4Wx19117; Thu, 15 Nov 2001 12:04:32 +0100 (CET) (envelope-from ibex) Date: Thu, 15 Nov 2001 12:04:32 +0100 From: Dirk Froemberg To: stable@freebsd.org Subject: Re: kernel panic if using SCSI CDROM as root device Message-ID: <20011115120432.A18404@physik.TU-Berlin.DE> References: <20011115003027.A87962@physik.TU-Berlin.DE> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20011115003027.A87962@physik.TU-Berlin.DE>; from dirk@freebsd.org on Thu, Nov 15, 2001 at 12:30:27AM +0100 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hi! On Thu, Nov 15, 2001 at 12:30:27AM +0100, Dirk Froemberg wrote: > I build an CDROM image with a boot image containing a GENERIC kernel > and an "ordinary" FreeBSD-4.4-STABLE installation. > > After booting the kernel I get the "mountroot> " prompt. On systems > having an ATAPI-CDROM mounting the CD as a root filesystem works > (giving cd9660:/dev/acd0c as root), but not on SCSI systems (giving > cd9660:/dev/cd0c as root). On such systems a kernel panic occurs > ("Fatal trap 12: page fault while in kernel mode"). Now, some more debug information... Regards Dirk ok boot -C /kernel text=0x203a28 data=0x39464+0x19cac syms=[0x4+0x30df0+0x4+0x353fc] Copyright (c) 1992-2001 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD 4.4-STABLE #0: Thu Nov 15 11:18:56 CET 2001 dirk@bach:/usr/obj/usr/src/sys/CDROM Timecounter "i8254" frequency 1193182 Hz Timecounter "TSC" frequency 166527838 Hz CPU: Pentium/P55C (166.53-MHz 586-class CPU) Origin = "GenuineIntel" Id = 0x543 Stepping = 3 Features=0x8001bf real memory = 67043328 (65472K bytes) avail memory = 61489152 (60048K bytes) Preloaded elf kernel "kernel" at 0xc03bf000. Intel Pentium detected, installing workaround for F00F bug md0: Malloc disk Using $PIR table, 6 entries at 0xc00fde70 npx0: on motherboard npx0: INT 16 interface pcib0: on motherboard pci0: on pcib0 pcib2: at device 1.0 on pci0 pci1: on pcib2 isab0: at device 7.0 on pci0 isa0: on isab0 atapci0: port 0x6400-0x640f at device 7.1 on pci0 fxp0: port 0x6c00-0x6c3f mem 0xe9000000-0xe901ffff,0xe9020000-0xe9020fff irq 9 at device 9.0 on pci0 fxp0: Ethernet address 00:02:b3:40:db:8c inphy0: on miibus0 inphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto ahc0: port 0x7000-0x70ff mem 0xe9021000-0xe9021fff irq 12 at device 10.0 on pci0 aic7890/91: Ultra2 Wide Channel A, SCSI Id=7, 32/255 SCBs pci0: at 12.0 irq 10 pcib1: on motherboard pci2: on pcib1 orm0: