From owner-freebsd-current@FreeBSD.ORG  Mon Mar 15 13:49:34 2004
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Date: Mon, 15 Mar 2004 22:49:29 +0100
From: Sven Esbjerg <esbjerg@xbsd.net>
To: freebsd-current@freebsd.org
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Subject: acpi Fatal trap 12 under kldload
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I just upgraded on my dual PIII. When I boot with acpi enabled I get this
fault:

Preloaded elf kernel "/boot/kernel/kernel" at 0xc0893000.
Preloaded elf module "/boot/kernel/acpi.ko" at 0xc08931f4.
link_elf: symbol AcpiDmDumpMethodInfo undefined
KLD file acpi.ko - could not finalize loading
kernel trap 12 with interrupts disabled


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address	= 0xdeadx106
fault code				= supervisor read, page not present
instruction pointer		= 0x8:0xc050b3c6
stack pointer			= 0x10:0xc0c21d20
frame pointer			= 0x10:0xc0x21d30
code segment			= base 0x0, limit 0xfffff, type 0x1b
						= DPL 0, pres 1, def32, gran 1
processor eflags		= resume, IOPL = 0
current process			= 0 ()
kernel: type 12 trap, code=0
Stopped at	linker_file_add_dependency+0x12:	movl	0x28(%esi),%eax

Booting with acpi disabled works. 

More info on:
http://xbsd.net/~esbjerg/hardware/enzo.html
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