[root@optlnxsrv07 smbd]# gdb /usr/sbin/smbd core.31998
GNU gdb (GDB) Fedora (7.5.1-32.fc18)
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/sbin/smbd...Reading symbols from /usr/sbin/smbd...(no debugging symbols found)...done.
(no debugging symbols found)...done.
[New LWP 31998]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/usr/sbin/smbd'.
Program terminated with signal 6, Aborted.
#0  0x0000003b73e35ba5 in raise () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install samba-4.0.4-3.fc18.x86_64
(gdb) bt full
#0  0x0000003b73e35ba5 in raise () from /lib64/libc.so.6
No symbol table info available.
#1  0x0000003b73e37358 in abort () from /lib64/libc.so.6
No symbol table info available.
#2  0x00000039e003b90b in dump_core () from /lib64/libsmbconf.so.0
No symbol table info available.
#3  0x00000039e0025059 in smb_panic_s3 () from /lib64/libsmbconf.so.0
No symbol table info available.
#4  0x00000039da41790f in smb_panic () from /lib64/libsamba-util.so.0
No symbol table info available.
#5  0x00000039df002d75 in dbwrap_check_lock_order () from /usr/lib64/samba/libdbwrap.so
No symbol table info available.
#6  0x00000039df002e99 in dbwrap_fetch_locked_internal () from /usr/lib64/samba/libdbwrap.so
No symbol table info available.
#7  0x00000039e7556e01 in smbXsrv_open_create () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#8  0x00000039e74b7c16 in file_new () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#9  0x00000039e750d865 in create_file_unixpath () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#10 0x00000039e750e8aa in create_file_default () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#11 0x00000039e75dab3b in vfswrap_create_file () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#12 0x00000039e7515235 in smb_vfs_call_create_file () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#13 0x00000039e750cb63 in open_file_fchmod () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#14 0x00000039e7503e80 in file_set_dosmode () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#15 0x00000039e74e6208 in rename_internals_fsp () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#16 0x00000039e74fb787 in smbd_do_setfilepathinfo () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#17 0x00000039e754fba5 in smbd_smb2_request_process_setinfo () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#18 0x00000039e753ea3d in smbd_smb2_request_dispatch () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#19 0x00000039e753ef0f in smbd_smb2_request_incoming () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#20 0x00000039e753be42 in smbd_smb2_request_read_done () from /usr/lib64/samba/libsmbd_base.so
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#21 0x00000039d980ac32 in tstream_readv_pdu_queue_done () from /usr/lib64/samba/libsamba-sockets.so
No symbol table info available.
#22 0x00000039d980a704 in tstream_readv_pdu_readv_done () from /usr/lib64/samba/libsamba-sockets.so
No symbol table info available.
#23 0x00000039d9809554 in tstream_readv_done () from /usr/lib64/samba/libsamba-sockets.so
No symbol table info available.
#24 0x00000037516048e2 in tevent_common_loop_immediate () from /lib64/libtevent.so.0
No symbol table info available.
#25 0x00000039e0043e17 in run_events_poll () from /lib64/libsmbconf.so.0
No symbol table info available.
#26 0x00000039e004422e in s3_event_loop_once () from /lib64/libsmbconf.so.0
No symbol table info available.
#27 0x0000003751604060 in _tevent_loop_once () from /lib64/libtevent.so.0
No symbol table info available.
#28 0x00000039e7529ff1 in smbd_process () from /usr/lib64/samba/libsmbd_base.so
No symbol table info available.
#29 0x0000000000409d54 in smbd_accept_connection ()
No symbol table info available.
#30 0x00000039e0044123 in run_events_poll () from /lib64/libsmbconf.so.0
No symbol table info available.
#31 0x00000039e00442a6 in s3_event_loop_once () from /lib64/libsmbconf.so.0
No symbol table info available.
#32 0x0000003751604060 in _tevent_loop_once () from /lib64/libtevent.so.0
No symbol table info available.
#33 0x0000000000406935 in main ()
No symbol table info available.
(gdb)

ls -la /lib64/libc.so.6 /lib64/libsamba-util.so.0 /lib64/libsmbconf.so.0 /lib64/libtevent.so.0 /usr/lib64/samba/libdbwrap.so /usr/lib64/samba/libsamba-sockets.so /usr/lib64/samba/libsmbd_base.so
lrwxrwxrwx. 1 root root      12 Feb 10 03:38 /lib64/libc.so.6 -> libc-2.16.so
lrwxrwxrwx. 1 root root      22 Apr  2 03:19 /lib64/libsamba-util.so.0 -> libsamba-util.so.0.0.1
-rwxr-xr-x. 1 root root  578576 Mar 22 05:58 /lib64/libsmbconf.so.0
lrwxrwxrwx. 1 root root      19 Feb 10 02:50 /lib64/libtevent.so.0 -> libtevent.so.0.9.17
-rwxr-xr-x. 1 root root   48192 Mar 22 05:58 /usr/lib64/samba/libdbwrap.so
-rwxr-xr-x. 1 root root  102480 Mar 22 05:58 /usr/lib64/samba/libsamba-sockets.so
-rwxr-xr-x. 1 root root 3201040 Mar 22 05:58 /usr/lib64/samba/libsmbd_base.so