Hi,
I have implemented a server in kernel space. This server uses UDP socket.
I create a kernel_thread to execute the server and it sleeps in recvfrom.
When I cleanup the module, I release the socket. The problem is:
when I make lsmod the module there isn't, but if I execute the ps command I see
the image of thread. And if I kill it, I cause a oops in kernel.
Why? What's the problem? I think problem is in socket, but how can I solve
it?
Many Thanks.
I list a little of my code:
// * In init
kernel_thread(kserv_main, NULL,0);
// * In kserv_main
atomic_inc(&DaemonCount);
(...) while (!signal_pending(current) && !kserv_shutdown) {
len = k_recvfrom(sock, &cli_addr, (char *)&rcv_request);
(...) }
// * before exit by thread
atomic_dec(&DaemonCount);
wake_up(&kserv_wait_threads);// dichiarata in precedenza
sock_release(sock);
return 0;
// * end main
// * in cleanup
kserv_shutdown = 1;
kill_proc(DaemonPid, SIGTERM, 1);
wait_event(kserv_wait_threads, atomic_read(&DaemonCount));
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