From owner-freebsd-current  Tue Mar  7 10:46:55 1995
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Cc: current@FreeBSD.org
Subject: Re: How to deadlock your -current system 
In-Reply-To: Your message of "Tue, 07 Mar 1995 06:27:44 EST."
             <199503071127.GAA02337@starkhome.cs.sunysb.edu> 
Date: Tue, 07 Mar 1995 10:46:14 -0800
From: Steven Wallace <swallace@ece.uci.edu>
Sender: current-owner@FreeBSD.org
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This looks like the mmap() ing problem into a sparse file I reported
earlier.  If you create a file and seek to someplace else without
writing data and then try to map those holes, your system is surely
to crash, as your program does.

Also there is a problem if you try to mmap() a file with one process
and then another process mmap() that file with a different non-page
offset, your system will freeze after you quit and do some swapping
activity.

Steven