[root@TZI1L01-2 smbd]# gdb /usr/sbin/smbd core.3454 
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-100.el7
Copyright (C) 2013 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/lib/debug/usr/sbin/smbd.debug...done.
done.

warning: core file may not match specified executable file.
[New LWP 3454]
[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  0x00007f6c950595f7 in raise () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install audit-libs-2.4.1-5.el7.x86_64 avahi-libs-0.6.31-15.el7.x86_64 bzip2-libs-1.0.6-13.el7.x86_64 cups-libs-1.6.3-22.el7.x86_64 cyrus-sasl-lib-2.1.26-19.2.el7.x86_64 dbus-libs-1.6.12-13.el7.x86_64 elfutils-libelf-0.163-3.el7.x86_64 elfutils-libs-0.163-3.el7.x86_64 glibc-2.17-105.el7.x86_64 gperftools-libs-2.4-7.el7.x86_64 keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.13.2-10.el7.x86_64 libacl-2.2.51-12.el7.x86_64 libattr-2.4.46-12.el7.x86_64 libcap-2.22-8.el7.x86_64 libcom_err-1.42.9-7.el7.x86_64 libgcc-4.8.5-4.el7.x86_64 libgcrypt-1.5.3-12.el7_1.1.x86_64 libgpg-error-1.12-3.el7.x86_64 libselinux-2.2.2-6.el7.x86_64 libstdc++-4.8.5-4.el7.x86_64 libunwind-1.1-5.el7.x86_64 nspr-4.10.8-2.el7_1.x86_64 nss-3.19.1-18.el7.x86_64 nss-softokn-freebl-3.16.2.3-13.el7_1.x86_64 nss-util-3.19.1-4.el7_1.x86_64 openldap-2.4.40-8.el7.x86_64 openssl-libs-1.0.1e-42.el7.9.x86_64 pam-1.1.8-12.el7_1.1.x86_64 pcre-8.32-15.el7.x86_64 popt-1.13-16.el7.x86_64 systemd-libs-219-19.el7.x86_64 xz-libs-5.1.2-12alpha.el7.x86_64 zlib-1.2.7-15.el7.x86_64
(gdb) backtrace full
#0  0x00007f6c950595f7 in raise () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007f6c9505ace8 in abort () from /lib64/libc.so.6
No symbol table info available.
#2  0x00007f6c96a276db in dump_core () at ../source3/lib/dumpcore.c:322
        called = true
        __FUNCTION__ = "dump_core"
#3  0x00007f6c96a18f27 in smb_panic_s3 (why=<optimized out>) at ../source3/lib/util.c:814
        cmd = <optimized out>
        result = <optimized out>
        __FUNCTION__ = "smb_panic_s3"
#4  0x00007f6c99768cdf in smb_panic (why=why@entry=0x7f6c997b608a "internal error") at ../lib/util/fault.c:166
No locals.
#5  0x00007f6c99768ef6 in fault_report (sig=<optimized out>) at ../lib/util/fault.c:83
        counter = 1
#6  sig_fault (sig=<optimized out>) at ../lib/util/fault.c:94
No locals.
#7  <signal handler called>
No symbol table info available.
#8  talloc_chunk_from_ptr (ptr=<optimized out>) at ../lib/talloc/talloc.c:429
        pp = <optimized out>
        tc = <optimized out>
#9  _talloc_free (ptr=0x2b3392fda0, location=0x7f6c9902f238 "../source3/smbd/notifyd/notifyd.c:479") at ../lib/talloc/talloc.c:1671
No locals.
#10 0x00007f6c98e7b205 in notifyd_apply_rec_change (client=client@entry=0x5f222c65c0, path=0x5f22306a80 "/fs/cifs_system1_1/cifs_11", 
    pathlen=<optimized out>, chg=0x5f22306a60, entries=0x5f222cc220, sys_notify_watch=0x7f6c98f5e610 <inotify_watch>, sys_notify_ctx=0x5f2232af40, 
    msg_ctx=0x5f222c61e0) at ../source3/smbd/notifyd/notifyd.c:479
        rec = 0x5f222e6530
        instances = 0x5f222cc310
        num_instances = 1
        i = <optimized out>
        instance = <optimized out>
        value = <optimized out>
        status = <optimized out>
        ok = false
---Type <return> to continue, or q <return> to quit---
        __FUNCTION__ = "notifyd_apply_rec_change"
        __func__ = "notifyd_apply_rec_change"
#11 0x00007f6c98e7b9f8 in notifyd_apply_reclog (msglen=<optimized out>, msg=<optimized out>, peer=0x5f22306920) at ../source3/smbd/notifyd/notifyd.c:1349
        r = 0x5f222c65a0
        chg = 0x5f22306a60
        pathlen = 27
        ok = <optimized out>
        state = 0x5f22350210
        i = 0
        blob = {data = 0x5f222ee0c0 "\330\301\033", length = 136}
        idbuf = {buf = "/q\313Z\000\000\000\000\b\000\000\000\000\000\000\000H\001\000\000\000\000\000\000v|ݘl\177\000\000\001", '\000' <repeats 14 times>}
        log = 0x5f222d4360
        ndr_err = <optimized out>
#12 notifyd_snoop_broadcast (src_vnn=<optimized out>, dst_vnn=<optimized out>, dst_srvid=<optimized out>, msg=<optimized out>, msglen=<optimized out>, 
    private_data=<optimized out>) at ../source3/smbd/notifyd/notifyd.c:1431
        state = <optimized out>
        my_id = {pid = 3454, task_id = 0, vnn = 1, unique_id = 8214130200206543813}
        i = <optimized out>
        msg_type = 798
        src = {pid = 20162, task_id = 0, vnn = 0, unique_id = 6741156325950188101}
        dst = {pid = 0, task_id = 0, vnn = 0, unique_id = 0}
        idbuf = {
          buf = "\370\251\230\354\375\177\000\000\030\000\000\000\060\000\000\000\200\252\230\354\375\177\000\000\300\251\230\354\375\177\000\000@\341-\"_\000\000\000\300\212-\"_\000\000"}
        status = <optimized out>
        __FUNCTION__ = "notifyd_snoop_broadcast"
        __func__ = "notifyd_snoop_broadcast"
#13 0x00007f6c967efe6a in ctdbd_msg_call_back (msg=msg@entry=0x5f222ee060, conn=<optimized out>) at ../source3/lib/ctdbd_conn.c:168
        ret = <optimized out>
        cb = <optimized out>
        msg_len = <optimized out>
        i = 9
        num_callbacks = 10
#14 0x00007f6c967f081e in ctdb_handle_message (hdr=0x5f222ee060, conn=<optimized out>) at ../source3/lib/ctdbd_conn.c:529
        msg = 0x5f222ee060
---Type <return> to continue, or q <return> to quit---
#15 ctdbd_socket_readable (conn=<optimized out>) at ../source3/lib/ctdbd_conn.c:545
        hdr = 0x5f222ee060
        ret = <optimized out>
        __FUNCTION__ = "ctdbd_socket_readable"
#16 0x00007f6c9847cc6b in epoll_event_loop (tvalp=0x7ffdec98aae0, epoll_ev=0x5f222c2180) at ../lib/tevent/tevent_epoll.c:728
        fde = <optimized out>
        flags = <optimized out>
        mpx_fde = <optimized out>
        ret = 1
        i = 0
        timeout = <optimized out>
        wait_errno = <optimized out>
        events = {{events = 1, data = {ptr = 0x5f222c6960, fd = 573335904, u32 = 573335904, u64 = 408595229024}}}
#17 epoll_event_loop_once (ev=<optimized out>, location=<optimized out>) at ../lib/tevent/tevent_epoll.c:926
        epoll_ev = 0x5f222c2180
        tval = {tv_sec = 0, tv_usec = 999706}
        panic_triggered = false
#18 0x00007f6c9847b137 in std_event_loop_once (ev=0x5f222de140, location=0x7f6c9847d3c8 "../lib/tevent/tevent_req.c:264")
    at ../lib/tevent/tevent_standard.c:114
        glue_ptr = <optimized out>
        glue = 0x5f222d2ce0
        ret = <optimized out>
#19 0x00007f6c9847738d in _tevent_loop_once (ev=ev@entry=0x5f222de140, location=location@entry=0x7f6c9847d3c8 "../lib/tevent/tevent_req.c:264")
    at ../lib/tevent/tevent.c:533
        ret = <optimized out>
        nesting_stack_ptr = 0x0
#20 0x00007f6c9847855f in tevent_req_poll (req=0x5f22350080, ev=0x5f222de140) at ../lib/tevent/tevent_req.c:264
        ret = <optimized out>
#21 0x0000005f20ff6d5a in smbd_notifyd_init (msg=msg@entry=0x5f222c61e0, interactive=interactive@entry=false, ppid=ppid@entry=0x5f22302248)
    at ../source3/smbd/server.c:431
        ev = <optimized out>
        req = <optimized out>
        pid = <optimized out>
        status = <optimized out>
        __FUNCTION__ = "smbd_notifyd_init"
---Type <return> to continue, or q <return> to quit---
        __func__ = "smbd_notifyd_init"
#22 0x0000005f20fec4a5 in main (argc=<optimized out>, argv=<optimized out>) at ../source3/smbd/server.c:1861
        is_daemon = <optimized out>
        interactive = false
        Fork = true
        no_process_group = false
        log_stdout = <optimized out>
        ports = 0x0
        profile_level = 0x0
        opt = <optimized out>
        pc = 0x7f6c98252060 <DEBUGLEVEL_CLASS>
        print_build_options = <optimized out>
        main_server_id = {pid = 3451, task_id = 0, vnn = 1, unique_id = 10820211197355446759}
        long_options = {{longName = 0x0, shortName = 0 '\000', argInfo = 4, arg = 0x7f6c95861320 <poptHelpOptions>, val = 0, 
            descrip = 0x5f20ffecdf "Help options:", argDescrip = 0x0}, {longName = 0x5f20ffeced "daemon", shortName = 68 'D', argInfo = 0, arg = 0x0, 
            val = 1000, descrip = 0x5f20ffecf4 "Become a daemon (default)", argDescrip = 0x0}, {longName = 0x5f20ffed0e "interactive", shortName = 105 'i', 
            argInfo = 0, arg = 0x0, val = 1001, descrip = 0x5f20fff888 "Run interactive (not a daemon)", argDescrip = 0x0}, {
            longName = 0x5f20ffed1a "foreground", shortName = 70 'F', argInfo = 0, arg = 0x0, val = 1002, 
            descrip = 0x5f20fff8a8 "Run daemon in foreground (for daemontools, etc.)", argDescrip = 0x0}, {longName = 0x5f20ffed25 "no-process-group", 
            shortName = 0 '\000', argInfo = 0, arg = 0x0, val = 1003, descrip = 0x5f20fff8e0 "Don't create a new process group", argDescrip = 0x0}, {
            longName = 0x5f20ffed36 "log-stdout", shortName = 83 'S', argInfo = 0, arg = 0x0, val = 1004, descrip = 0x5f20ffed41 "Log to stdout", 
            argDescrip = 0x0}, {longName = 0x5f20ffed4f "build-options", shortName = 98 'b', argInfo = 0, arg = 0x0, val = 98, 
            descrip = 0x5f20ffed5d "Print build options", argDescrip = 0x0}, {longName = 0x5f20ffed71 "port", shortName = 112 'p', argInfo = 1, 
            arg = 0x7ffdec98ac00, val = 0, descrip = 0x5f20ffed76 "Listen on the specified ports", argDescrip = 0x0}, {
            longName = 0x5f20ffed94 "profiling-level", shortName = 80 'P', argInfo = 1, arg = 0x7ffdec98ac08, val = 0, 
            descrip = 0x5f20ffeda4 "Set profiling level", argDescrip = 0x5f20ffedb8 "PROFILE_LEVEL"}, {longName = 0x0, shortName = 0 '\000', argInfo = 4, 
            arg = 0x7f6c970944a0 <popt_common_samba>, val = 0, descrip = 0x5f20ffedc6 "Common samba options:", argDescrip = 0x0}, {longName = 0x0, 
            shortName = 0 '\000', argInfo = 0, arg = 0x0, val = 0, descrip = 0x0, argDescrip = 0x0}}
        parent = 0x5f22302200
        frame = 0x5f222be0c0
        status = <optimized out>
        ev_ctx = 0x5f222de140
        msg_ctx = 0x5f222c61e0
        server_id = {pid = 3453, task_id = 0, vnn = 1, unique_id = 14482054700414184868}
        se = <optimized out>
---Type <return> to continue, or q <return> to quit---
        profiling_level = 0
        np_dir = 0x0
        smbd_shim_fns = {cancel_pending_lock_requests_by_fid = 0x7f6c98eff630 <smbd_cancel_pending_lock_requests_by_fid>, 
          send_stat_cache_delete_message = 0x7f6c98f059c0 <smbd_send_stat_cache_delete_message>, 
          change_to_root_user = 0x7f6c98eea610 <smbd_change_to_root_user>, 
          become_authenticated_pipe_user = 0x7f6c98eea6a0 <smbd_become_authenticated_pipe_user>, 
          unbecome_authenticated_pipe_user = 0x7f6c98eea750 <smbd_unbecome_authenticated_pipe_user>, 
          contend_level2_oplocks_begin = 0x7f6c98f55e40 <smbd_contend_level2_oplocks_begin>, 
          contend_level2_oplocks_end = 0x7f6c98f56120 <smbd_contend_level2_oplocks_end>, become_root = 0x7f6c98eea760 <smbd_become_root>, 
          unbecome_root = 0x7f6c98eea790 <smbd_unbecome_root>, exit_server = 0x7f6c98f4dd00 <smbd_exit_server>, 
          exit_server_cleanly = 0x7f6c98f4dd20 <smbd_exit_server_cleanly>}
        __FUNCTION__ = "main"