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Date:      Tue, 29 Jan 2008 06:04:48 -0600
From:      Drew <cotharyus@gmail.com>
To:        questions@freebsd.org
Subject:   boot panic on 7.0RC1
Message-ID:  <715841970801290404x6555a9abn226018c0eb3c8182@mail.gmail.com>

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Hello,
I'm posting this in the hopes that someone can point me in the right
direction, and that it may possibly help someone else. The kernel panic
below is generated at boot, and is reproduceable as many times as you want
to do it. A few details on the hardware, the machine is a couple of years
old, but never displayed any real instability. My only suspect hardware is
the hard drive itself, and possibly ram, however seatools and memtest clear
them both with flying colors, for what that's worth. The machine is an
Athlon XP1900+, and I'm still running GENERIC (I usually compile something
custom after a machine has been up and going a while, but this was only
installed this past week) and the machine is under light load at best,
running natd, apache, mysql and postfix for my home network. One thing I
will point out is that the power went out yesterday on this machine, and
while the UPS's normally keep everything up, apparently the power was out
for more than 30 minutes because all of my machine's rebooted. When this one
came back up, it had hosed /var/log, but a good fsck cleared that up. Later
it quit working, and I got a brief look at a panic before it rebooted - I
know nothing about the first panic other than it was a kernel panic. When it
rebooted it came back to where it would mount / and stopped, with the
infamous mountroot> prompt. I politely advised it that it needed to look
ufs:ad1s1a and got the following panic - forgive any formating errors on my
part - I assure you the information I copied off the screen is correct.

Warning: / was not properly dismounted

Fatal Trap 12: page fault while in kernel mode
cpuid = 0, apic id = 00
fault virtual address = 0x188
fault code = supervisor read, page not present
instruction pointer = 0x20 : 0xc0747d14
stack pointer = 0x28 : 0xe3391aa0
frame pointer = 0x28 : 0xe3391ab8
code segment = base 0x0, limit 0xfffff, type 0x1b
                      = DPL 0, pres 1, def32 1, gran 1
processor flags = interupt enabled, resume, IOPL = 0
current process = 1 (swapper)
trap number = 12
panic: page fault
cpuid = 0
uptime: 42s

All of this panic can be reproduced character for character (except the
uptime, unless you try real hard) time and time again. Any pointers on what
might be wrong here? Thanks in advance.

Drew



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