On Sun, 10 Jan 1999 21:24:13 -0800 (PST)  Matthew Jacob wrote:

> I've had two alpha machine crash today with this, after trying to set
> up to do null mounts for /usr/src:
> 
> null_node_create: already lockednull_node_create: already locked
> null_node_create: already lockednull_node_create: already locked
> panic:lockmgr: pid 4019, not exclusive lock holder 4017 unlocking
> Stopped in ld at        Debugger+0x4:   ret     zero,(ra)
> 
> Anyone seen this?

Is this the same as PR# 4907?  Unfortunately that PR doesn't mention the
panic message...  ISTR some discussion about this in the last six months
or so - sorry I can't be more specific.  Have you had working nullfs
mounts recently?

Simon.