PAE+SMP panic with "page fault while in kernel mode" in many files opened situations

Kris Kennaway kris at
Fri Mar 11 08:54:21 PST 2005

On Fri, Mar 11, 2005 at 10:31:40AM +0100, Emmanuel OTTON wrote:

> The panic message is:
> ----------------------------------------------------
> fatal trap 12: page fault while in kernel mode
> cpuid: 00; apic id = 00
> fault virtual address = 0x24
> fault code = supervisor read, page not present
> .../... several lines of hexa addresses, are they needed ? .../...

Yes, they're vital.  You should also try to obtain a crashdump and
traceback as described in the chapter on kernel debugging in the
developers' handbook.


P.S. Make sure you are not using any old modules (run kldstat).  Using
modules that are compiled with different options, or are out of date
with respect to your kernel, will cause this kind of crash.

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