> >A panic.  The kernel runs out of something.  I tried increasing some
> >constant, but it didn't help.  (Can't remember the details any more.)

> As someone else already pointed out, if your users can read your raw disk
> partitions, you have worse problems to deal with :-)

How about if they can read your raw tape drive?

I.e. I have just reproduced this using /dev/rst0, and have a dump should
anyone care to see it.

Interestingly enough, the crash happens during or after the I/O -- using a
tape drive makes this painfully obvious :-).