kern/97591: 6.1-RELEASE crashes on fork bomb

[Maxim Konovalov]

The following reply was made to PR kern/97591; it has been noted by GNATS.

From: Maxim Konovalov <maxim at macomnet.ru>
To: Matthieu MICHAUD <ohmer at epita.info>
Cc: bug-followup at freebsd.org
Subject: Re: kern/97591: 6.1-RELEASE crashes on fork bomb
Date: Fri, 9 Jun 2006 21:40:30 +0400 (MSD)

 Hi Matthieu,
 
 > >Description:
 > my fresh installed 6.1-RELEASE workstation doesn't survive to a
 > simple fork bomb. after launching the bomb, it freezes a few seconds
 > and then my computer reboots. afair, 5.4 systems survived it.
 >
 > i didn't tweak my kernel, i just use home compiled GENERIC without
 > overriden CFLAGS. everything is almost default install. what about
 > adding a forkbomb in regression tests ?
 
 Please clarify what you mean by "home compiled GENERIC"?  Do you
 change anything there?  Have you changed anything in /boot/loader.conf
 or /etc/sysctl.conf?
 
 > >How-To-Repeat:
 > echo 'int main() { for(;;) fork(); }' | gcc -x c - && ./a.out
 
 While we definitly have some problems in pmap(9) code in 7.0 aka HEAD
 I can't reproduce the problem on RELENG_6 system.
 
 Please try to obtain a backtrace from the kernel core file or ddb.
 
 http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html
 
 -- 
 Maxim Konovalov