task_for_pid crash

#include <stdio.h>
#include <mach/mach.h>

int main( int argc, char** argv )
{
    kern_return_t kern_return = 0;
    mach_port_t task = 0;

    for (int i=0; i<100000; i++) {
      for (int pid=0; pid<100000; pid++) {
        kern_return = task_for_pid( mach_task_self(), pid, &task );
        if( kern_return != KERN_SUCCESS ) {
         continue;
        }
      printf("success for %d: %u\n", pid, task );
      }
    }
    return 0;
}