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Date: Tue, 10 Mar 1998 12:10:06 -0800 (PST)
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From: Max Euston <meuston@jmrodgers.com>
Subject: RE: kern/5969: non-root user can reboot/lock up system
Reply-To: Max Euston <meuston@jmrodgers.com>
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The following reply was made to PR kern/5969; it has been noted by GNATS.

From: Max Euston <meuston@jmrodgers.com>
To: "'bandy@raid.com'" <bandy@raid.com>,
        "FreeBSD-gnats-submit@freebsd.org"
	 <FreeBSD-gnats-submit@freebsd.org>
Cc:  Subject: RE: kern/5969: non-root user can reboot/lock up system
Date: Tue, 10 Mar 1998 14:59:59 -0500

 Tim,
 	This works "correctly" on -STABLE.  What options are you giving 'cc'?  Can you send me the output ('.s' file) from a 'cc -S'?
 
 Max
 
 -----
 Max Euston <meuston@jmrodgers.com>
 Sysadm, Programmer, etc...
 
 
 On Tuesday, March 10, 1998 11:39 AM, Tim Bandy [SMTP:bandy@raid.com] wrote:
 > 
 > >Number:         5969
 > >Category:       kern
 > >Synopsis:       non-root user can reboot/lock up system
 > >Confidential:   no
 > >Severity:       serious
 > >Priority:       medium
 > >Responsible:    freebsd-bugs
 > >State:          open
 > >Quarter:
 > >Keywords:
 > >Date-Required:
 > >Class:          sw-bug
 > >Submitter-Id:   current-users
 > >Arrival-Date:   Tue Mar 10 08:50:04 PST 1998
 > >Last-Modified:
 > >Originator:     Tim Bandy
 > >Organization:
 > >Release:        FreeBSD 3.0-CURRENT i386
 > >Environment:
 > pentium 166MHz 64M
 > 
 > >Description:
 > I was looking at some code from the ioccc (International Obfuscated C
 > Code Contest) and locked up my machine.  The code that did it is included
 > below.  It does not always lock up in the same manner.  It sometimes will
 > take about 15 seconds or more to lock up, sometimes as quickly as 1.
 > I've had better luck locking up the system about 30 seconds or so after
 > it boots, with both X and Xemacs running.
 > I copied some information off of the console after one such lockup.
 >   Fatal trap 12
 >   fault virtual address 0x38
 > 
 > However, at other times, it does not lock up in the same manner and only
 > tells me "page fault, syncing disks..."
 > 
 > >How-To-Repeat:
 > 
 > Here's the nasty beast.
 > 
 > int i;main(){for(;i["]<i;++i){--i;}"];read('-'-'-',i+++"hell\
 > o, world!\n",'/'/'/'));}read(j,i,p){write(j/p+p,i---j,i/i);}
 > 
 > >Fix:
 > 	
 > 	
 > 
 > >Audit-Trail:
 > >Unformatted:
 > 
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