6.1-RELEASE panic / lockmgr?

[Wilko Bulte]

My dual-CPU DS20 Alpha box can more or less consistently be 
forced into a panic like:

FreeBSD/alpha (goldrush.wbnet) (ttyd0)^

login: panic: lockmgr: thread 0xfffffc007d9d4a80, not exclusive lock holder
0xfffffc006052d260 unlocking
cpuid = 1
KDB: enter: panic

Trigger is a "make -j2 release".  j2 seems to be needed, not seen it with
-j1

Unfortunately after printing the line with "KDB" the whole thing appears
to become completely catatonic :(

Ideas?

-- 
Wilko Bulte				wilko at FreeBSD.org