i386 kernel drops immediately to db

[Mark Kirby <mark%fishladder.co.uk@localhost>]

Hi,

kernel built from sources about an hour ago.

Its i386 and a generic kernel. Seems to be ACPI related

Back trace is bellow

4.99.48 (GENERIC)
VIA Technologies, Inc. VT8623-8235 ( )
mainbus0 (root)
uvm_fault(0xc0a84fe0, 0xf110e000, 2) -> 0xe
kernel: supervisor trap page fault, code = -
Stopped in pid 0.1 (system) at netbsd:AcpiUtInitGlobals+0x7:  adcb  % 
al,0(%eax)
db{0}> bt
AcpiUtInitGlobals(c0ab4cb8,2,0,c0741a16,c0741a20) at  
netbsd:AcpiUtInitGlobals+0x7
acpi_probe(c1d3ac80,co95de2f,c0b9fc38,0,5) at netbsd:acpi_probe+0x6f
mainbus_attach(0,c1d3ac80,0,c044c86e,c095d298) at  
netbsd:mainbus_attach+0x129
config_attach_loc(0,c09fb158,0,0,0) at netbsd:config_attach_loc+0x156
config_attach(0,c09fb158,0,0,c0a0ad40) at netbsd:config_attach+0x2c
config_rootfound(c095d298, 0 ,0 ,c0a0ad40,2) at  
netbsd:config_rootfound+0x44
cpu_configure(c0a85f60,1,0,c04715a2,c0a0ad40) at netbsd:cpu_configure 
+0x28
configure(c0a0dc40,2,0,f9300,0) at netbsd:configure+0x38
main(0,c01002bd,0,0,0) at netbsd:main+0x17f
db{0}>

Thanks

Mark