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Message-Id: <199805172240.PAA06065@hub.freebsd.org>
Date: Sun, 17 May 1998 15:40:30 -0700 (PDT)
From: rsargent@cisco.com
To: freebsd-gnats-submit@FreeBSD.ORG
X-Send-Pr-Version: www-1.0
Subject: kern/6670: PANIC on boot with FreeBSD 3.0 (same computer works fine with 2.2.6
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>Number:         6670
>Category:       kern
>Synopsis:       PANIC on boot with FreeBSD 3.0 (same computer works fine with 2.2.6
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun May 17 15:40:01 PDT 1998
>Last-Modified:
>Originator:     Robert Sargent
>Organization:
Cisco Systems Inc
>Release:        3.0
>Environment:
Toshiba T2450CT Notebook
16MB RAM 504MB HD 
3com 589 PCMCIA 10MB ethernet card (zp0)
here's the uname -a from when it's running 2.2.6 (it won't boot with 3.0)
tosh# uname -a
FreeBSD tosh.sgt.com 2.2-980511-SNAP FreeBSD 2.2-980511-SNAP #0:
Mon May 11 10:23:08 GMT 1998  
root@make.ican.net:/usr/src/sys/compile/GENERIC i386
>Description:
This computer works fine with 2.2.5 and I tried several times to upgrade it
to 3.0 and after the install when it reboots, it panics right
after the npx0 INT 16 interface line while booting.  I reinstalled 2.2.6
current (980511) and it works fine again.

Here's the details after the crash and before the syncs:

Fatal trap 12 page fault while in kernel mode
fault virt addr 0x18
fault code supervisor write, page not present
instruction pointer 0x8:0xf01fbbeb
stack pointer       0x10:0xf0251ff0
frame pointer       0x10:0xf0251ff8
code segment base 0x0, limit 0xfffff, type 0x1b
             DPL 0, pres 1, def32 1, gran 1
processor eflags = int enabled, resume, IOPL=0
current process = idle
interupt mask net tty bio cam
trap# 12
panic:page fault

syncing disks ...
>How-To-Repeat:
Try to install 3.0 on similar computer
>Fix:
Backdown to 2.2.6 
>Audit-Trail:
>Unformatted:

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