Although the details in 4907 are somewhat vague, I'd have guessed it
was different.

No, I hadn't had 'nullfs' working recently. I didn't use it  until a fan
of *BSD said "Whoa- you really gotta try null fs as a much better
alternative than symlinks".

If nullfs isn't working, then we should say so in config files, right?

On Mon, 11 Jan 1999, Simon Burge wrote:

> 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.
>