The following reply was made to PR kern/36572; it has been noted by GNATS.

From: Antti Kantee <pooka@cs.hut.fi>
To: gnats-bugs@netbsd.org, netbsd-bugs@netbsd.org, martin@aprisoft.de
Cc: 
Subject: Re: kern/36572: panic on NFS unmount
Date: Thu, 28 Jun 2007 15:58:51 +0300

 On Thu Jun 28 2007 at 12:45:03 +0000, Antti Kantee wrote:
 >  >  On Thu, Jun 28, 2007 at 11:55:02AM +0000, Antti Kantee wrote:
 >  >  >  holds a reference.  This might actually be fairly easy to duplicate by
 >  >  >  opening a file, removing it and doing unmount -f.
 >  >  
 >  >  That did not reproduce it for me.
 >  
 >  You obviously need some luck in the vnode list order so that the parent
 >  is cleaned before the child.
 >  
 >  .. or my theory is wrong.
 
 I started thinking about this and concluded it should happen always.
 
 And sure enough, touch foo ; sleep 10 < foo & rm foo ; unmount -f
 made it panic for me.
 
 -- 
 Antti Kantee <pooka@iki.fi>                     Of course he runs NetBSD
 http://www.iki.fi/pooka/                          http://www.NetBSD.org/
     "la qualité la plus indispensable du cuisinier est l'exactitude"