Query: Real time process

[Chetan Nanda]

Hi All,

I am experimenting with real time process on kernel version 2.6.24 (under
UML) and having root privileges.
I have written a simple code as follow:

/*##############################*/
int main()
{
    pid_t pid;
    struct sched_param param;
    pid = getpid();
    memset((void *)&param, 0 , sizeof(struct sched_param));
    param.sched_priority = 30;

    /*change the priority to rt*/
    sched_setscheduler(pid,SCHED_FIFO, &param);

    while(1);
}
/*##############################*/

On running this program cause system to hangs and this is as per the real
time task implementation in the kernel.
Which says a rt task with policy equal to 'SCHED_FIFO' will run till it
voluntarily release CPU.

Is there any way to kill such task? Isn't this kind of behavior compromising
system security?

~~
Chetan Nanda