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From: akes@mcshh.hanse.de (Andreas Kessemeier)
Newsgroups: comp.unix.admin
Subject: Re: How do you make your UNIX crash ???
Message-ID: <8809@mcshh.hanse.de>
Date: 21 Mar 91 21:02:30 GMT
References: <1991Mar16.195916.26282@infoac.rmi.de> <1991Mar18.052757.24460@athena.mit.edu> <1994@pdxgate.UUCP> <1991Mar18.174106.17335@chinet.chi.il.us>
Lines: 21

les@chinet.chi.il.us (Leslie Mikesell) writes:
>AT&T  7300's and 3b1's (the Unix-PC) will crash if you write to the
>floppy from a shared-memory segment.

This can be done much simpler on some Systems with a poor implementation
of shared memory:

	- create a shared memory segment.
	- do a shmat() on that segment.
	- do a write(1,"foo",3)

The manual says: "never do systemcalls with attached shared memory",
but crashing the machine in such a case is much more poor than this
restiction.

Greets,
	Andreas

-- 
Andreas Kessemeier	akes@mcshh.hanse.de
There is no way to Freedom. Freedom is the way.