Hi all FreeBSD Hackers!
My FreeBSD auto reboot itself and I got this report by kgdb, but
actually I'm not a programmer. I don't know how to debug this error.
Could someone helps with fixing?
Thanx in advanced!

FreeBSD xxxx.com 6.2-RELEASE-p8 FreeBSD 6.2-RELEASE-p8 #0: Tue Oct 30
22:54:18 EET 2007
atanas@xxxxxxxxxxxx:/usr/obj/usr/src/sys/THURISAZ i386

kgdb kernel.debug /var/crash/vmcore.0
kgdb: kvm_nlist(_stopped_cpus):
kgdb: kvm_nlist(_stoppcbs):
[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".

Unread portion of the kernel message buffer:

Fatal double fault:
eip = 0xc0489471
esp = 0xd568af78
ebp = 0xd568b094
panic: double fault
Uptime: 1d2h58m25s
Dumping 511 MB (2 chunks)
chunk 0: 1MB (159 pages) ... ok
chunk 1: 511MB (130800 pages) 495 479 463 447 431 415 399 383 367
351 335 319 303 287 271 255 239 223 207 191 175 159 143 127 111 95 79
63 47 31 15

#0 doadump () at pcpu.h:165
165 __asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) where
#0 doadump () at pcpu.h:165
#1 0xc06abe26 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409
#2 0xc06ac0bc in panic (fmt=0xc095387e "double fault") at
/usr/src/sys/kern/kern_shutdown.c:565
#3 0xc08c2bb2 in dblfault_handler () at /usr/src/sys/i386/i386/trap.c:866
#4 0x00000000 in ?? ()
(kgdb) up 0
#0 doadump () at pcpu.h:165
165 __asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) backtrace
#0 doadump () at pcpu.h:165
#1 0xc06abe26 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409
#2 0xc06ac0bc in panic (fmt=0xc095387e "double fault") at
/usr/src/sys/kern/kern_shutdown.c:565
#3 0xc08c2bb2 in dblfault_handler () at /usr/src/sys/i386/i386/trap.c:866
#4 0x00000000 in ?? ()
(kgdb)
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