SMP kld(un)load panic

[Richard Nyberg <rnyberg@xxxxxxxx>]

Not all the time, but quite often, dragonfly panics when I load or unload
kernel modules. This only happens on SMP systems though. I've tested
this on an SMP machine running the GENERIC kernel with and without SMP
enabled.

For some reason it seems that different modules have different chances
of panicking the system. The backtraces are always the same though.
The nnpfs module from teh arla project almost always crashes, but linprocfs
also does it from time to time.

Anyway, here are backtraces for two panics:
http://people.su.se/~rnyberg/dfcrash/kldload.txt
http://people.su.se/~rnyberg/dfcrash/kldunload.txt

I still have the core dumps, so if you want me to do something
with them I can.

Happy hacking!
	-Richard