The following reply was made to PR kern/37576; it has been noted by GNATS.

From: Antti Kantee <pooka@cs.hut.fi>
To: prlw1@cam.ac.uk
Cc: gnats-bugs@netbsd.org
Subject: Re: kern/37576: Reader / writer lock error
Date: Thu, 20 Dec 2007 21:15:07 +0200

 On Thu Dec 20 2007 at 18:20:00 +0000, prlw1@cam.ac.uk wrote:
 > mount -t cd9660 /dev/cd1a /cdrom
 > 
 > gives the panic:
 > 
 > Reader / writer lock error: lockdebug_alloc: already initialized
 > 
 > lock address : 0x00000000d0c95f04 type     :     sleep/adaptive
 > shared holds :                  0 exclusive:                  0
 > shares wanted:                  0 exclusive:                  0
 > current cpu  :                  0 last held:                  0
 > current lwp  : 0x00000000cd40a8c0 last held: 000000000000000000
 > last locked  : 000000000000000000 unlocked : 000000000000000000
 > initialized  : 0x00000000c03b5d00
 > owner/count  : 000000000000000000 flags    : 000000000000000000
 
 Hmm.  I started looking at cd9660_vfsops.c and I could've *sworn* that
 cd9660_vget_internal() had the call to genfs_node_init() twice one after
 another.  But when I edited the extra call away, I got no cvs diff and
 I can't seem to find anything in cvs indicating it ever would have been
 there twice.  I'm probably just going bananas, but check that your copy
 doesn't contain two calls.
 
 -- 
 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"