From owner-freebsd-hackers@FreeBSD.ORG  Wed Sep  1 22:19:04 2004
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Date: Wed, 1 Sep 2004 18:18:57 -0500 (EST)
From: Sam <sah@softcardsystems.com>
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Subject: Re: kernel panic, unknown / reserved trap
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Heh, i just discovered dmesg saved the panic.  Alright!

Here's what happens:

FreeBSD 4.10-RELEASE-p2 #4: Wed Sep  1 17:20:37 EDT 2004
     root@freebsd.borf.com:/usr/obj/usr/src/sys/SAH
Timecounter "i8254"  frequency 1193182 Hz
CPU: Intel Pentium III (797.42-MHz 686-class CPU)
   Origin = "GenuineIntel"  Id = 0x686  Stepping = 6

Features=0x383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,S
SE>
real memory  = 535560192 (523008K bytes)
config> en ata0
config> po ata0 0x1f0
config> ir ata0 14
config> f ata0 0
config> q
avail memory = 517210112 (505088K bytes)
pnpbios: Bad PnP BIOS data checksum
Preloaded elf kernel "kernel" at 0xc03d2000.
Preloaded userconfig_script "/boot/kernel.conf" at 0xc03d209c.
instruction pointer     = 0x8:0xc03f4fdb
stack pointer           = 0x10:0xc03f4fa0
frame pointer           = 0x10:0xc03f4fbc
code segment            = base 0x0, limit 0xfffff, type 0x1b
                         = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, IOPL = 0
current process         = 0 (swapper)
interrupt mask          = net tty bio cam
trap number             = 30
panic: unknown/reserved trap

Cheers,

Sam