panic: vm_fault: fault on nofualt entry, addr: 81423000

John Baldwin jhb at
Thu Jan 17 12:41:15 PST 2008

On Thursday 17 January 2008 07:38:32 am Pete French wrote:
> following up my own email here, but I have compiled the kernel
> debugger into my kerenal, and much to my surprise it dooes actualy
> drop into the debugger when it panics.
> so, what can I do from there to help sort this out ? a quick backtrace
> shows the following call sequence:
> 	madt_probe
> 	apic_init
> 	mi_startup
> 	beging
> Which surprises me as I was expecting to see something inside an acpi call.
> I am not sure where to go from here though - I know nothing about this bit
> of the kernel, and it's quite a shallow learning curve unfortunately.

MADT is the ACPI table that enumerates APICs.  Do you have the offset of 

John Baldwin

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