Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!ucsd!pacbell.com!pacbell!att!cbnewsc!bwong
From: bwong@cbnewsc.att.com (bruce.f.wong)
Newsgroups: comp.arch
Subject: Re: I crashed our MIPS machine today
Message-ID: <1990Aug16.131541.14791@cbnewsc.att.com>
Date: 16 Aug 90 13:15:41 GMT
References: <1990Aug10.155458.2237@hod.uit.no> <3899@auspex.auspex.com>
Distribution: usa
Organization: AT&T Bell Laboratories
Lines: 17

In article <3899@auspex.auspex.com> guy@auspex.auspex.com (Guy Harris) writes:
>>I thought this should be impossible!
>
>Yeah, it *should* be impossible to crash the OS from non-privileged
>user-mode code, but sometimes there are bugs in the OS.

I gave up trying to crash, with crashme.c, a SUN4/40 running SunOS 4.1.
I used about 30 different combinations of arguments and then got bored
when it didn't crash.  Then I tried crashme using the arguments suggested
in the original article on a SUN4/110 running SunOS 4.0 and it crashed
immediately.  My conclusion is that the OS is to blame and this is re-
inforced by a posting that stated no success crashing two different RISC
machines running the Mach OS.
-- 
Bruce F. Wong		ATT Bell Laboratories
att!iexist!bwong	200 Park Plaza, Rm 1B-232
708-713-5111		Naperville, Ill 60566-7050 USA