The following reply was made to PR kern/36035; it has been noted by GNATS.

From: Andrew Doran <ad@netbsd.org>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: kern/36035: Processes wedged in tstile
Date: Fri, 23 Mar 2007 22:57:27 +0000

 On Mon, Mar 19, 2007 at 06:28:58PM +0000, Andrew Doran wrote:
 
 > On Mon, Mar 19, 2007 at 09:10:01AM +0000, mange@freemail.hu wrote:
 > 
 > > System: NetBSD zemdatav 4.99.14 NetBSD 4.99.14 (IBOOK) #0: Mon Mar 19 09:55:58 CET 2007 magnus@zemdatav:/media/e/netbsd/obj/sys/arch/macppc/compile/IBOOK macppc
 > > Architecture: powerpc
 > > Machine: macppc
 > > >Description:
 > > 	I run a dovecot IMAP server on my machine.  When I connect to
 > > 	it from Emacs, the imap process goes to state "tstile" and
 > > 	Emacs to "pipe".  Emacs does redraw itself, but can't be
 > > 	cancelled.  More and more processes get stuck in state
 > > 	"tstile", and I can't open a new terminal.  When I zap X and
 > > 	type "sudo shutdown -r now", the shell gets wedged too.
 > > 
 > > 	I downgraded the kernel sources to 2007-03-12, and the problem
 > > 	no longer happens.
 > > >How-To-Repeat:
 > 
 > I'll see if I can reproduce the problem. Were there any processes stuck in
 > vnlock?
 
 I think this may be fixed now, by sys_pipe.c revision 1.83.
 
 Andrew