ACPI related panic on early boot

Hi,

after jhb_at_-s commits to acpi I am getting this panic early on boot, its
handwritten so there might be mistakes.
I have acpi as a module, and the panic seems to occur after probing fdc wihle I
have no fdc attached. I can provide any info you ask for...

Fatal trap 12: page fault while in kernel mode
fault virtual address	= 0x5
fault code		= supervisor read, page not present
instruction pointer 	= 0x8:0xc049fb86
stack pointer		= 0x10:0xc0820c88
frame pointer		= 0x10:0xc0820c8c
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, def32 1, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 0 (swapper)			
[thread pid 0 tid 0]
Stopped at	device_get_children+0x10:	movl	0x4(%eax),%eax
db>trace
Tracing pid 0 tid 0 td 0xc05f7de0
device_get_children(c1646100,c0820ca4,c0820ca8,c05d5bc0,101) at device_get_children+0x10
acpi_wake_sysctl_walk(c157bb00,c1670a00,31,c157bb00,c157bb00) at acpi_wake_sysctl_walk+0x17
acpi_wake_sysctl_walk(fee00fff,fee00000,c163a028,3,c07072a0) at acpi_wake_sysctl_walk+0x44
acpi_attach(c157bb00,c157bb00,c1573dc0,c157bc00,c0820d34) at acpi_attach+0x684
device_attach(c157bb00,c157bc00,c0820d48,c058feb3,c157bc00) at device_attach+0x226
bus_generic_attach(c157bc00,c157bc00,c157bc4c,c0820d60,c04a039c) at bus_generic_attach+0x14
nexus_attach(c157bc00,c157bc00,0,825000,c0820d70) at nexus_attach+0x13
device_attach(c157bc00) at device_attach+0x226
root_bus_configure(c15ca300,c05c5eec,0,c0820d98,c0468fab) at root_bus_configure+0x16
configure(0,81ec00,81e000,0,c0429e05) at configure+0x1b
mi_startup() at mi_startup+0x86
begin() at begin+0x2c

roman