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>>>>> "Brian" == Brian A Seklecki <lavalamp@spiritual-machines.org> writes:
    >> The only consistent thing is that the stack trace is never the same.
    >> I wish I could provide more info than this.  This is my console
    >> server, so I will have to screw around a whole bunch to get a serial
    >> console on it.

    Brian> It's imposible to even offer an opinion with out the kernel
    Brian> messages. Do you have the disk setup to dump core to /var/crash ?

So, here is a second one, from a more recent kernel. Appears to have
occured while backups were occuring. Note that I told amanda to skip
dumping the local disks. 

istari-[/var/crash] mcr 1002 %ls -lta
total 136532
- -rw-------   1 root  wheel   3162414 Feb  7 16:14 netbsd.6
drwxr-x---   2 root  wheel       512 Feb  7 16:14 ./
- -rw-------   1 root  wheel  66716180 Feb  7 16:14 netbsd.6.core
- -rw-------   1 root  wheel         2 Feb  7 16:14 bounds
drwxr-xr-x  29 root  wheel       512 Dec 29 22:38 ../
- -rw-------   1 root  wheel   3087933 Dec 19 01:44 netbsd.5
- -rw-------   1 root  wheel  66716180 Dec 19 01:44 netbsd.5.core
- -rw-------   1 root  wheel         5 Nov 13  1999 minfree
istari-[/var/crash] mcr 1003 %j           
istari-[/var/crash] mcr 1004 %su
Password:
istari# gdb netbsd.6
GNU gdb 5.0nb1
Copyright 2000 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--netbsdelf"...(no debugging symbols found)...
(gdb) target kcore netbsd.6.core
panic: cpu_switch
#0  0x1 in ?? ()
(gdb) bt
#0  0x1 in ?? ()
#1  0xc02979f3 in cpu_reboot ()
#2  0xc01d4463 in panic ()
#3  0xc0100884 in remrunqueue ()
#4  0xc01f0c05 in vfs_shutdown ()
#5  0xc02979cb in cpu_reboot ()
#6  0xc01d4463 in panic ()
#7  0xc01008be in switch_error ()
#8  0xc01cbbd9 in bpendtsleep ()
#9  0xc01d77cc in sys_select ()
#10 0xc029cd3f in syscall_plain ()
#11 0xc0100d3e in syscall1 ()
can not access 0xbfbfd8cc, invalid translation (invalid PDE)
can not access 0xbfbfd8cc, invalid translation (invalid PDE)
Cannot access memory at address 0xbfbfd8cc

]       ON HUMILITY: to err is human. To moo, bovine.           |  firewalls  [
]   Michael Richardson, Sandelman Software Works, Ottawa, ON    |net architect[
] mcr@sandelman.ottawa.on.ca http://www.sandelman.ottawa.on.ca/ |device driver[
] panic("Just another Debian GNU/Linux using, kernel hacking, security guy"); [
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