allowed_cpus issue in rt_task_init_schmod call

Hi,

I'm facing an issue with rt_task_init_schmod trying to assign a task to 
a set of cpus.

I have attached a sample program that shows this issue.

The machine I'm using has 4 cores, and has rtai 5.0-test1. I want to 
start several instances of a program on the first two cores, leaving 
the last 2 ones for interrupt handling (they are isolated using 
isolcpus 2,3).

If I use 1 as allowed_cpus mask, all the instances are started on core 
0.
If I use 2, all the instances are started on core 1.
If I use 3, instances run on either core 0, 1, 2 or 3, while I expect 
them to be running only on core 0 and 1.

Is there something wrong in my sample code ?

Thanks,

	Emmanuel.

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#include <rtai.h>
#include <rtai_sched.h>
#include <rtai_tasklets.h>
#include <stdlib.h>

int
main (int argc, char **argv)
{
	RT_TASK *task;

	rt_allow_nonroot_hrt();

	task = rt_task_init_schmod (rt_get_name (0), 10, 0, 0, SCHED_FIFO, 3);
	if (task == NULL) {
		fprintf (stderr, "rt_task_init_schmod failed\n");
		return EXIT_FAILURE;
	}

	mlockall (MCL_CURRENT | MCL_FUTURE);
	rt_make_soft_real_time ();

	sleep (120);

	rt_make_soft_real_time ();
	rt_task_delete (task);

	return EXIT_SUCCESS;	
}