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Article #3630

Re: CRASHME crashes NS 3.0 in less than a second!!!

#3630
From: Matthew Pharr
Date: Thu, 01 Oct 1992 11:34
30 lines
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In article <BvFunJ.E1H@gate.demon.co.uk> paul@seer.demon.co.uk
	(Paul Lynch) writes:
>In article <1992Sep30.152220.18225@pilhuhn.ka.sub.org>  
>jr@pilhuhn.ka.sub.org (Jochen Richter) writes:
>> The user program CRASHME that is available from some ftp-servers
>> crashes NS 3.0 in less than a second!!! That is the depressing 
>> result of my tests. It's a shame that NS hasn't been tested with
>> this in many magazines demonstrated user program. It produces
>> many different system exceptions that have to be handled properly
>> by the kernel...
>> After the crash you can't even reach NMI! You have to use 
>> <Command><Alternate>*.
>> 
>> Shame!!!
>> 
>
>So what.  Almost every Unix system is crashed in < 2 seconds by Crashme.
>

If I remember correctly, a fair number of Unix systems -aren't-
crashed by CrashMe.  Anyway, what CrashMe does is fork as many
processes as it can and write to memory randomly, in the hopes of
destroying something important that the o/s wasn't protecting
properly. I would assume that the problem NeXTs have with this is the
same old one that comes up when you fork() too many processes or
threads--the panic out of nowhere and lock-up that was discussed
earlier in the thread about what happens when you try to write a
multi-threaded app with, say, 200 threads...

matt
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References: <1992Sep30.152220.18225@pilhuhn.ka.sub.org> <BvFunJ.E1H@gate.demon.co.uk>

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From: pharr-matthew@CS.YALE.EDU (Matthew Pharr)
Subject: Re: CRASHME crashes NS 3.0 in less than a second!!!
Message-ID: <1992Oct1.113425.27867@cs.yale.edu>
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Organization: Yale University Computer Science Dept., New Haven, CT 06520-2158
References: <1992Sep30.152220.18225@pilhuhn.ka.sub.org> <BvFunJ.E1H@gate.demon.co.uk>
Date: Thu, 1 Oct 1992 11:34:25 GMT
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