Date: Tue, 10 Feb 1998 17:17:31 -0800 (PST) From: wall@montana.avicom.net To: freebsd-gnats-submit@FreeBSD.ORG Subject: kern/5709: Fatal trap 12: page fault in kernel mode while trying to boot to install Message-ID: <199802110117.RAA24385@hub.freebsd.org>
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>Number: 5709
>Category: kern
>Synopsis: Fatal trap 12: page fault in kernel mode while trying to boot to install
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Feb 10 17:20:01 PST 1998
>Last-Modified:
>Originator: Bob Wall
>Organization:
>Release: 2.2.5 (also occurred in 2.2.2)
>Environment:
Can't get the machine to boot to print the environment. It's a Micron
XPE laptop with docking station (contains an AMD 53C974 SCSI controller
and integrated AMD Ethernet adapter), 64M RAM, 2.1 G IDE hard drive.
>Description:
I'm trying to install FreeBSD 2.2.5 - I created a boot floppy, and when
I try to boot from it, I get the following (whether I skip the kernel
config or not):
avail memory = 61071360 (59640K bytes0
Probing for devices on PCI bus 0:
chip0 <Intel 82437MX mobile PCI cache memory controller> rev 2 on pci0:0
chip1 <Intel 82371MX mobile PCI I/O IDE accelerator (MPIIX)> rev 3 on pci0:1
amd0 <amd 53c974 scsi> rev 2 int a irq 15 on pci0:17
amd0 waiting for devices to settle
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x18
fault code = supervisor read, page not present
instruction pointer = 0x8:0xf017e09b
stack pointer = 0x10:0xefbffd54
frame pointer = 0x10:0xefbffd6c
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 = 0 ()
interrupt mask = net tty bio
panic: page fault
Under version 2.2.2, it wouldn't do this if the laptop was not in the
docking station (so I suspect it is the amd0 driver causing the
problem). I haven't tried it with 2.2.5 yet.
>How-To-Repeat:
Try to boot using the boot floppy.
>Fix:
>Audit-Trail:
>Unformatted:
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