FreeBSD 6.4-stable: kernel panics related to usb and filesystem interaction?

[Torfinn Ingolfsen]

Hi,
One[1] of my machines have recently had a couple of panics wile running
FreeBSD 6.4-stable / amd64:
root at kg-quiet# uname -a
FreeBSD kg-quiet.kg4.no 6.4-STABLE FreeBSD 6.4-STABLE #25: Fri Dec  5 23:26:19 CET 2008     root at kg-quiet.kg4.no:/usr/obj/usr/src/sys/QUIET  amd64

The machine works as a cheap fileserver (running Samba) and has a number of external disks attached (one firewire, several usb).
A work log for FreeBSD on this machine is here[2].

So I used kgdb to make a couple of backtraces of the dumps, in case it is useful.
The first panic mentions smbd, dump info and backtrace kan be found here[3].
The next panic mentions ohci0 and ohci+ as the process, , dump info and backtrace kan be found here[4].

Thus my suspicion that this could be an interaction between usb and filesystem. OTOH, I can easily be totally wrong here.

Feedback and / or requests to perform more debugging tasks are welcome.

References:
1) http://tingox.googlepages.com/rs480m2
2) http://tingox.googlepages.com/rs480m2_freebsd
3) http://tingox.googlepages.com/quiet-6.4-stable-kdump-20081223.txt
4) http://tingox.googlepages.com/quiet-6.4-stable-kdump-20081231.txt
-- 
Regards,
Torfinn Ingolfsen,
Norway