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From: Pietro Gagliardi <pietro10@mac.com>
Subject: Re: [9fans] Google search of the day
Date: Wed, 13 Feb 2008 19:04:23 -0500
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Topicbox-Message-UUID: 53a5a6a2-ead3-11e9-9d60-3106f5b1d025

That is exactly how that shell attack works.

At one point, however, I think that the number of dynamically
allocated task objects should run out, and the program should just
wind about in an infinite loop of erroneous calls to fork(). What a
shame. I'm happy the OS I'm writing does so. It isn't a UNIX-like
one, but the semantics are similar.

On Feb 13, 2008, at 6:59 PM, john@csplan9.rit.edu wrote:

>> In most /bin/sh variants (I'm not sure about original):
>>
>> 	:(){:|:};:
>>
>> Quick denial of service.
>>
>
> This just in: Repeated forks can bring down a system.
> Story at 11.
>
> #include <u.h>
> #include <libc.h>
>
> int main() {
> 	for (;;)
> 		fork();
> }
>
> Look ma!
>
> John
>