[2014/08/08 13:12:18.688668,  0] lib/fault.c:47(fault_report)
  ===============================================================
[2014/08/08 13:12:18.688737,  0] lib/fault.c:48(fault_report)
  INTERNAL ERROR: Signal 11 in pid 16145 (3.6.3)
  Please read the Trouble-Shooting section of the Samba3-HOWTO
[2014/08/08 13:12:18.688762,  0] lib/fault.c:50(fault_report)

  From: http://www.samba.org/samba/docs/Samba3-HOWTO.pdf
[2014/08/08 13:12:18.688782,  0] lib/fault.c:51(fault_report)
  ===============================================================
[2014/08/08 13:12:18.688797,  0] lib/util.c:1117(smb_panic)
  PANIC (pid 16145): internal error
[2014/08/08 13:12:18.690721,  0] lib/util.c:1221(log_stack_trace)
  BACKTRACE: 20 stack frames:
   #0 smbd(log_stack_trace+0x1a) [0x7f18bb6124ba]
   #1 smbd(smb_panic+0x25) [0x7f18bb612595]
   #2 smbd(+0x409838) [0x7f18bb603838]
   #3 /lib/x86_64-linux-gnu/libc.so.6(+0x364a0) [0x7f18b81b24a0]
   #4 smbd(+0x19a34e) [0x7f18bb39434e]
   #5 smbd(smbd_dirptr_lanman2_entry+0x1b16) [0x7f18bb33cc96]
   #6 smbd(+0x14f895) [0x7f18bb349895]
   #7 smbd(reply_trans2+0x588) [0x7f18bb34bad8]
   #8 smbd(+0x1769c4) [0x7f18bb3709c4]
   #9 smbd(+0x176ddb) [0x7f18bb370ddb]
   #10 smbd(+0x1771f3) [0x7f18bb3711f3]
   #11 smbd(run_events_poll+0x34e) [0x7f18bb62227e]
   #12 smbd(smbd_process+0x812) [0x7f18bb372962]
   #13 smbd(+0x68621f) [0x7f18bb88021f]
   #14 smbd(run_events_poll+0x34e) [0x7f18bb62227e]
   #15 smbd(+0x42841a) [0x7f18bb62241a]
   #16 smbd(_tevent_loop_once+0x90) [0x7f18bb622fa0]
   #17 smbd(main+0xed0) [0x7f18bb2f1060]
   #18 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f18b819d76d]
   #19 smbd(+0xf7545) [0x7f18bb2f1545]
[2014/08/08 13:12:18.711149,  0] lib/fault.c:372(dump_core)
  dumping core in /var/log/samba/cores/smbd
[2014/08/08 13:12:18.886254,  1] smbd/server.c:300(remove_child_pid)
  Scheduled cleanup of brl and lock database after unclean shutdown