7.0-RELEASE panic

[1 at movesmountains.com]

Hi,
Apologies for the somewhat-generic subject line, not sure what else to call
it.

I have a new, fairly generic i386 box, with a fresh install of 7.0-RELEASE
using pretty much the default options.  I'm using a generic kernel with the
addition of "options GEOM_BDE".  I have had a couple of panics with it over
a day or two; I can't pinpoint what is causing it, it has panicked when I'm
not there and nothing seems to be going on.  I recompiled the kernel shortly
after install, so don't know if it will panic on the generic kernel alone.


There is a vmcore in /var/crash, and I followed the instructions at
http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneld
ebug-gdb.html

However, I'm not sure if kgdb is telling me I have a physical memory
problem, or if it is telling me it's not working properly, (or more likely
I'm not using it properly):


odin2008# kgdb kernel.debug /var/crash/vmcore.1
[GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so:
Undefined symbol "ps_pglobal_lookup"]
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd".
Cannot access memory at address 0x2fd9
(kgdb) where
#0  0x00000000 in ?? ()
(kgdb) quit


odin2008# more /var/crash/info.1
Dump header from device /dev/ad4s1b
  Architecture: i386
  Architecture Version: 2
  Dump Length: 207388672B (197 MB)
  Blocksize: 512
  Dumptime: Sat May 31 15:31:52 2008
  Hostname: odin2008.asgard.movesmountains.com
  Magic: FreeBSD Kernel Dump
  Version String: FreeBSD 7.0-RELEASE #0: Sun Feb 24 19:59:52 UTC 2008
    root at logan.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
  Panic String: page fault
  Dump Parity: 797791774
  Bounds: 1
  Dump Status: good




Oddly, I'm also seeing typos in /var/log/messages, which may or may not be
related - e.g.

May 30 0:14:53 odin2008 savecore: rebot after panic: age fault
May 3 10:14:3 odin2008 savecore: wrting core to vmcore.0
May 30 10:16:03 odin2008 sck: /dev/ad4s1: 8 files, 7 used, 253808 free 40
frag,
31721 blocks, 0.0% frgmentation)

fsck isn't showing any problems.



Can anyone advise me what to do from here?  Does this look like a hardware
problem?  Any help appreciated!


Yours,
Mark