fwohci0: panic: blockable sleep lock (sleep mutex ) Giant _at_ /usr/src/sys/dev/kbdmux/kbdmux.c:1103

After 11 days of uptime, I typed 'fwcontrol -p' from a ssh session and  
my system rebooted.  This is all the information I could obtain.   
After reboot, fwcontrol did not cause another panic.  I do no have any  
swap nor did I get a chance to enter the debugger before the reboot.   
I'm currently in the process of updating to 188474 and will report  
back if this happens again.

kernel:

FreeBSD attack.young-alumni.com 8.0-CURRENT FreeBSD 8.0-CURRENT #0  
r187913M: Fri Jan 30 05:35:09 CST 2009     root_at_attack.young- 
alumni.com:/usr/obj/usr/src/sys/FAILWHALE  amd64

panic message:

Feb 10 20:24:50 attack kernel: fwohci0: panic: blockable sleep lock  
(sleep mutex
) Giant _at_ /usr/src/sys/dev/kbdmux/kbdmux.c:1103panic: panic: panic:  
panic: panic
: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic: p
anic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: pani
c: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic:
panic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: pan
ic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic:
  panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic: pa
nic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic
: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic: p
anic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: pani
c: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic:
panic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: pan
ic: pan
Feb 10 20:24:50 attack kernel: c: panic: panic: panic: panic: panic:  
panic: pani
c: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic:
panic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: pan
ic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic:
  panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic: pa
nic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic
: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic: p
anic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: pani
c: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic:
panic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: pan
ic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic:
  panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic: pa
nic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic
: panic
Feb 10 20:24:50 attack kernel: panic: panic: panic: panic: panic:  
panic: panic:
panic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: pan
ic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic:
  panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic: pa
nic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic
: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic: p
anic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: pani
c: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic:
panic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: pan
ic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic:
  panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic: pa
nic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic
: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic: p
anic: p
Feb 10 20:24:50 attack kernel: panic: panic: panic: panic: panic:  
panic: panic:
panic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: pan
ic: panic: panic: panic: panic: panic: panic: panic: panic: panic:  
panic: panic:
  panic: panic: p4

- Chris