Date: Mon, 28 Mar 2005 19:28:20 +0200
To: linux-kernel@vger.kernel.org
Subject: Re: forkbombing Linux distributions
Message-ID: <20050328172820.GA31571@linux.ensimag.fr>
Reply-To: 20050323135317.GA22959@roonstrasse.net
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From: Matthieu Castet <mat@ensilinx1.imag.fr>
Sender: linux-kernel-owner@vger.kernel.org
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> The memory limits aren't good enough either: if you set them low
> enough that memory-forkbombs are unperilous for
> RLIMIT_NPROC*RLIMIT_DATA, it's probably too low for serious
> applications.

yes, if you want to run application like openoffice.org you need at
least 200Mo. If you want that your system is usable, you need at least 40 process per user. So 40*200 = 8Go, and it don't think you have all this memory...

I think per user limit could be a solution.

attached a small fork-memory bombing.

Matthieu

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int main()
{
	while(1){
		while(fork()){
			malloc(1);
		}
	}
}

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