lock (sleep mutex) UMA pcpu not locked

[Willem Jan Withagen]

From: "Willem Jan Withagen" <wjw at withagen.nl>

> Something is really scr*d here...
> Unfortunatly I replaces DDB bij KDB without adding the DDB. And these panics
and
> stuff come while building a new kernel. :( So no backtraces here...
>

This mornings kernel seems to behave a LOT nicer.
Building world as I mail, but with little problems thusfar.

--WjW