Hello List... I am working on trying to port a LINUX kernel driver from RedHat AS 4/5 to Fedora 11 & 12. Within this driver, I create some threads. The threads call skb_rec_datagram(). When it is time to shut down the system, my main kernel code ( in RH 4 & 5 ) called kill_proc( pid, SIGTERM, 0 ) to terminate the threads created above. The skb_rec_datagram() would return with an error, and the threads would then exit cleanly. Now for Fedora 11 & 12, I understand that kill_proc() is no longer available to use. So, I have performed experiments that replace the kill_proc() with kill_pid() or with send_sig_info(). Neither of these routines are terminating my threads. I have added extra debug to the code. The return codes from kill_pid() and send_sig_info() are zero, implying that what I asked for was accomplished. Yet, my threads did not terminate. I added code after the skb_rec_datagram() call to print out the error value. This printk statement does not execute when the SIGTERM is genereated. Using "crash" on a live Fedora 12 system, I see that my threads are, as expected, sitting inside skb_rec_datagram(). So, I am left with two choices. Either the replacements for kill_proc() are not functioning, or skb_rec_datagram() has changed its behavior that ignores SIGTERM. Interestingly, I can "kill -9 " my threads as ROOT from the command line on a RH 4/5 system. But I can not do so on a Fedora 11/12 system. This would seem to imply that my signals are not masked correctly. However, inspection via 'crash' on a live system seems to indicate that my signal mask is ok. Does anyone know if the behavior of skb_rec_datagram() has changed in the newer kernels ? thanks wr -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list