I'm getting an increasing amount of instability on my main RiscBSD server
which has hitherto been faultlessly reliable. In the past few days I've
had a couple of the following errors:

cleaned vnode: type VBAD, usecount 0, writecount 0, refcount 0
        tag VT_UFS, ino 646002, on dev 16, 4
panic: cleaned vnode isn't

Then it drops to the debug prompt.

It seems to have happened, since a bug in a certain NFSClient highlighted
a bug in nfsd which gave rise to undeletable and unlistable files (bad
file descriptor) though this might be a red herring.

The kernel is a 1.2E kernel (5328 IIRC)

Stephen Borrill