Starting program: /usr/bin/smbtree [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". # Here's output of WORKGROUP workgroup till some user...after which it gets stuck Program received signal SIGINT, Interrupt. 0x00007ffff596b892 in do_fcntl () from /usr/lib/libc.so.6 #0 0x00007ffff596b892 in do_fcntl () from /usr/lib/libc.so.6 #1 0x00007ffff596b959 in fcntl () from /usr/lib/libc.so.6 #2 0x00007ffff1b8fc46 in async_connect_send () from /usr/lib/samba/libsmb-transport-samba4.so #3 0x00007ffff6f4aff7 in ?? () from /usr/lib/libsmbconf.so.0 #4 0x00007ffff4617d84 in tevent_common_loop_immediate () from /usr/lib/libtevent.so.0 #5 0x00007ffff461cc2e in ?? () from /usr/lib/libtevent.so.0 #6 0x00007ffff461b337 in ?? () from /usr/lib/libtevent.so.0 #7 0x00007ffff461752d in _tevent_loop_once () from /usr/lib/libtevent.so.0 #8 0x00007ffff461879f in tevent_req_poll () from /usr/lib/libtevent.so.0 #9 0x00007ffff4410fbe in tevent_req_poll_ntstatus () from /usr/lib/libtevent-util.so.0 #10 0x00007ffff71b04e4 in cli_full_connection () from /usr/lib/samba/liblibsmb-samba4.so #11 0x00007ffff71b0662 in get_ipc_connect () from /usr/lib/samba/liblibsmb-samba4.so #12 0x0000555555555db9 in main ()