lockdebug panic (isa)

[Christoph Egger <Christoph_Egger%gmx.de@localhost>]

Hi!

A lockdebug panic at boot:

[...]
isa0 at pcib0
ACPI error (evevent-04016): No installed handler for fixed event [00000000] 
[20080321]
Mutex error: lockdebug_wantlock: acquiring sleep lock from interrupt context

lock address : 0xffff800000826bf0 type : sleep/adaptive
shared holds :                    0 exclusive :   0
shared wanted :                 0 exclusive :   0
current cpu :   0 last held : 0
current lwp : 0xffffffff80bb43a0 last held : 000000000000000000
last locked : 000000000000000 unlocked : 000000000000000000
initialized : 0xffffffff806babe0
owner field : 000000000000000000 wait/spin : 0/0

Turnstile chain at 0xffffffff80c7fdc0.
=> No active turnstile for this lock.

panic: LOCKDEBUG
Stopped in pid 0.1 (system) at netbsd:breakpoint+0x5 : leave
db{0}>

I wanted to provide a backtrace here, but system wasn't responsive on keyboard
interrupts. I think, it's related to the isa and/or acpi.

Christoph