Using a kernel without Frank v. L.'s locking code, and with a
vnconfig.c of 8 July, I got a panic I hadn't seen yet:
"locking against myself"

Patrick

(the beginning of the trace in brief:
ufs_lock
vndstrategy
spec_strategy
bwrite
vn_bwrite
bawrite
getnewbuf
allocbuf
getblk
ufs_bmaparray
ufs_bmap
vndstrategy
spec_strategy
ufs_strategy
bwrite
vn_bwrite
bawrite
...
I was compiling a kernel and making a SSTO disk simultaneously)