The Samba 'panic action' script, /usr/local/bin/panic-action, was called for pid 5217 (/usr/sbin/smbd). Below is a backtrace for this process generated with gdb, which shows the state of the program at the time the error occured. If this problem is recurring, you should think about submitting a bugreport for Samba. [Thread debugging using libthread_db enabled] 0x00007f33b57f97ae in waitpid () from /lib64/libc.so.6 #0 0x00007f33b57f97ae in waitpid () from /lib64/libc.so.6 No symbol table info available. #1 0x00007f33b578b8c9 in do_system () from /lib64/libc.so.6 No symbol table info available. #2 0x00007f33b8e0d873 in smb_panic () No symbol table info available. #3 0x00007f33b8dfe2d4 in ?? () No symbol table info available. #4 No symbol table info available. #5 0x00007f33b8de4ba2 in tcopy_passwd () No symbol table info available. #6 0x00007f33b8da8732 in pdb_copy_sam_account () No symbol table info available. #7 0x00007f33b8dacb35 in pdb_getsampwsid () No symbol table info available. #8 0x00007f33b8ce329c in _samr_OpenUser () No symbol table info available. #9 0x00007f33b8cf30f7 in ?? () No symbol table info available. #10 0x00007f33b8d0406a in ?? () No symbol table info available. #11 0x00007f33b8e807c9 in dcerpc_binding_handle_raw_call_send () No symbol table info available. #12 0x00007f33b8e80a7b in dcerpc_binding_handle_call_send () No symbol table info available. #13 0x00007f33b8e80b87 in dcerpc_binding_handle_call () No symbol table info available. #14 0x00007f33b8d747fd in dcerpc_samr_OpenUser_r () No symbol table info available. #15 0x00007f33b8d7482d in dcerpc_samr_OpenUser () No symbol table info available. #16 0x00007f33b8c9562b in ?? () No symbol table info available. #17 0x00007f33b8c958bb in _netr_ServerAuthenticate3 () No symbol table info available. #18 0x00007f33b8c9a6fc in ?? () No symbol table info available. #19 0x00007f33b8d004d6 in ?? () No symbol table info available. #20 0x00007f33b8d0174f in process_complete_pdu () No symbol table info available. #21 0x00007f33b8d02ec8 in process_incoming_data () No symbol table info available. #22 0x00007f33b8d03361 in np_write_send () No symbol table info available. #23 0x00007f33b8b79a1b in smbd_smb2_request_process_write () No symbol table info available. #24 0x00007f33b8b6fd95 in smbd_smb2_request_dispatch () No symbol table info available. #25 0x00007f33b8b7139d in ?? () No symbol table info available. #26 0x00007f33b8b6e690 in ?? () No symbol table info available. #27 0x00007f33b8c0e172 in ?? () No symbol table info available. #28 0x00007f33b8c0e4f4 in ?? () No symbol table info available. #29 0x00007f33b8c0d4c4 in ?? () No symbol table info available. #30 0x00007f33b8e1e52f in tevent_common_loop_immediate () No symbol table info available. #31 0x00007f33b8e1c7bc in run_events_poll () No symbol table info available. #32 0x00007f33b8b5a8e8 in smbd_process () No symbol table info available. #33 0x00007f33b907d8ef in ?? () No symbol table info available. #34 0x00007f33b8e1caf7 in run_events_poll () No symbol table info available. #35 0x00007f33b8e1cfaf in ?? () No symbol table info available. #36 0x00007f33b8e1d330 in _tevent_loop_once () No symbol table info available. #37 0x00007f33b907ebeb in main () No symbol table info available. A debugging session is active. Inferior 1 [process 5217] will be detached. Quit anyway? (y or n) [answered Y; input not from terminal]