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From: John Baldwin <jhb@freebsd.org>
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Date: Thu, 13 Oct 2005 15:30:14 -0400
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Cc: Andrew Gallatin <gallatin@cs.duke.edu>, Kris Kennaway <kris@obsecurity.org>
Subject: Re: lockmgr: thread <..> unlocking unheld lock
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On Wednesday 05 October 2005 02:00 pm, Andrew Gallatin wrote:
> It also seems to have started happening on a second amd64 that I just
> upgraded from a mid-august -current to CVS cvsupped yesterday.  This
> is a UP amd64 3000+..

Can you try reverting any of the recent changes to amd64/include/atomic.h?  
The ones to change foo_ptr() to take uintptr_t should be fine, but maybe try 
reverting the changes after that (not using +m for example).

-- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org