I have a similar problem. winbindd does start, but has crashed several times since installing 2:3.4.7~dfsg-1ubuntu3.5. Here is my gdb backtrace from core dump:
Core was generated by `/usr/sbin/winbindd'. Program terminated with signal 6, Aborted. #0 0x00007f4fbe8fba75 in raise () from /lib/libc.so.6 (gdb) bt #0 0x00007f4fbe8fba75 in raise () from /lib/libc.so.6 #1 0x00007f4fbe8ff5c0 in abort () from /lib/libc.so.6 #2 0x00007f4fc0da1450 in dump_core () at lib/fault.c:337 #3 0x00007f4fc0db227e in smb_panic (why=<value optimized out>) at lib/util.c:1496 #4 0x00007f4fc0da184d in fault_report (sig=11) at lib/fault.c:52 #5 sig_fault (sig=11) at lib/fault.c:75 #6 <signal handler called> #7 rpc_pipe_np_smb_conn (p=0x0) at rpc_client/rpc_transport_np.c:402 #8 0x00007f4fc0e8d048 in rpccli_set_timeout (rpc_cli=0x0, timeout=35000) at rpc_client/cli_pipe.c:2956 #9 0x00007f4fc0d277a1 in winbindd_lookup_sids (mem_ctx=0x7f4fc2ae8560, domain=<value optimized out>, num_sids=<value optimized out>, sids=<value optimized out>, domains=0x7fff185eaf90, names=0x7fff185eafa0, types=0x7fff185eaf98) at winbindd/winbindd_rpc.c:1221 #10 0x00007f4fc0d2a092 in lookup_groupmem (domain=0x7f4fc2b0a240, mem_ctx=0x7f4fc2ae8780, group_sid=0x7f4fc2b2e360, num_names=0x7fff185eb2dc, sid_mem=<value optimized out>, names=<value optimized out>, name_types=0x7fff185eb2a8) at winbindd/winbindd_ads.c:1124 #11 0x00007f4fc0d11503 in lookup_groupmem (domain=<value optimized out>, mem_ctx=<value optimized out>, group_sid=<value optimized out>, num_names=0x7fff185eb2dc, sid_mem=0x7fff185eb298, names=0x7fff185eb2a0, ---Type <return> to continue, or q <return> to quit--- name_types=0x7fff185eb2a8) at winbindd/winbindd_cache.c:2211 #12 0x00007f4fc0d045e7 in expand_groups (domain=0x7f4fc2b0a240, state=<value optimized out>, group_sid=<value optimized out>, group_name_type=SID_NAME_DOM_GRP, num_gr_mem=<value optimized out>, gr_mem=<value optimized out>, gr_mem_len=0x7fff185eb668) at winbindd/winbindd_group.c:468 #13 fill_grent_mem (domain=0x7f4fc2b0a240, state=<value optimized out>, group_sid=<value optimized out>, group_name_type=SID_NAME_DOM_GRP, num_gr_mem=<value optimized out>, gr_mem=<value optimized out>, gr_mem_len=0x7fff185eb668) at winbindd/winbindd_group.c:604 #14 0x00007f4fc0d05a9f in getgrsid_sid2gid_recv (private_data=0x7f4fc2aa6890, success=<value optimized out>, gid=16777729) at winbindd/winbindd_group.c:866 #15 0x00007f4fc0cfeba0 in process_loop (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at winbindd/winbindd.c:1115 #16 main (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at winbindd/winbindd.c:1440 ** Attachment added: "winbind core dump" https://bugs.launchpad.net/ubuntu/+source/samba/+bug/736757/+attachment/1929172/+files/winbind.core.gz -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in Ubuntu. https://bugs.launchpad.net/bugs/736757 Title: PANIC (pid 18442): internal error in winbindd -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs