Hi, I was testing PI support in the -rt tree (-rt13) when I hit the BUG below. I am using the BULL/Montavista glibc patches. However I would think this can be reproduced using just plain FUTEX_WAKE/WAIT_ROBUST APIs as well, though I havent tried. I can send out the test code if anybody is interested. I have attached the .config below. -Dinakar