Fatal trap 12 --- can lack of APIC on SMP cause crashes?
Kris Kennaway
kris at FreeBSD.org
Sat Jun 28 20:58:55 UTC 2008
Rudy wrote:
> Rudy wrote:
>>
>> My kernel panics!
>
> Here are a two things I did which seem to stop the Fatal trap 12's with
> FreeBSD-7.0-RELEASE (saw it on three different boxes):
>
> cvsup to FreeBSD-7.0-STABLE
> (Don't forget to change SCHED_4BSD --> SCHED_ULE as that is now the
> default on STABLE)
> disabled CARP
>
> I don't know if it was the SCHED_4BSD, the CARP, or the combination, but
> my boxes seem stable now.
>
> Just wanted to answer my own post in case anyone is searching for Fatal
> trap 12 cures for FreeBSD-7.0-RELEASE. :)
FYI, "Fatal trap 12" is a very generic type of error (it can mean "null
pointer dereference, among other things) and it can have many causes
(e.g. anywhere in the entire kernel where there is a pointer that can
become NULL through a programming or other error). You need to compare
the stack traces to work out what the cause was.
Kris
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