Samba core dump-ed?

[2020/02/23 12:57:52.147460,  1] ../source3/smbd/smbd_cleanupd.c:99(smbd_cleanupd_unlock)
  smbd_cleanupd_unlock: Cleaning up brl and lock database after unclean shutdown
[2020/02/23 12:57:53.151160,  3] ../lib/util/access.c:361(allow_access)
  Allowed connection from 192.168.0.125 (192.168.0.125)
[2020/02/23 12:57:53.151612,  3] ../source3/smbd/oplock.c:1329(init_oplocks)
  init_oplocks: initializing messages.
[2020/02/23 12:57:53.152027,  3] ../source3/smbd/process.c:1959(process_smb)
  Transaction 0 of length 216 (0 toread)
[2020/02/23 12:57:53.152139,  3] ../source3/smbd/process.c:1539(switch_message)
  switch message SMBnegprot (pid 27594) conn 0x0
[2020/02/23 12:57:53.152242,  4] ../source3/smbd/sec_ctx.c:320(set_sec_ctx_internal)
  setting sec ctx (0, 0) – sec_ctx_stack_ndx = 0
[2020/02/23 12:57:53.154120,  3] ../source3/smbd/negprot.c:612(reply_negprot)
  Requested protocol [PC NETWORK PROGRAM 1.0]
[2020/02/23 12:57:53.154203,  3] ../source3/smbd/negprot.c:612(reply_negprot)
  Requested protocol [MICROSOFT NETWORKS 1.03]
[2020/02/23 12:57:53.154253,  3] ../source3/smbd/negprot.c:612(reply_negprot)
  Requested protocol [MICROSOFT NETWORKS 3.0]
[2020/02/23 12:57:53.154304,  3] ../source3/smbd/negprot.c:612(reply_negprot)
  Requested protocol [LANMAN1.0]
[2020/02/23 12:57:53.154412,  3] ../source3/smbd/negprot.c:612(reply_negprot)
  Requested protocol [LM1.2X002]
[2020/02/23 12:57:53.154859,  3] ../source3/smbd/negprot.c:612(reply_negprot)
  Requested protocol [DOS LANMAN2.1]
[2020/02/23 12:57:53.155002,  3] ../source3/smbd/negprot.c:612(reply_negprot)
  Requested protocol [LANMAN2.1]
[2020/02/23 12:57:53.155086,  3] ../source3/smbd/negprot.c:612(reply_negprot)
  Requested protocol [Samba]
[2020/02/23 12:57:53.155181,  3] ../source3/smbd/negprot.c:612(reply_negprot)
  Requested protocol [NT LANMAN 1.0]
[2020/02/23 12:57:53.155245,  3] ../source3/smbd/negprot.c:612(reply_negprot)
  Requested protocol [NT LM 0.12]
[2020/02/23 12:57:53.155314,  3] ../source3/smbd/negprot.c:612(reply_negprot)
  Requested protocol [SMB 2.002]
[2020/02/23 12:57:53.155371,  3] ../source3/smbd/negprot.c:612(reply_negprot)
  Requested protocol [SMB 2.???]
[2020/02/23 12:57:53.155695,  4] ../source3/smbd/sec_ctx.c:320(set_sec_ctx_internal)
  setting sec ctx (0, 0) – sec_ctx_stack_ndx = 0
[2020/02/23 12:57:53.155933,  3] ../source3/smbd/smb2_negprot.c:290(smbd_smb2_request_process_negprot)
  Selected protocol SMB2_FF
[2020/02/23 12:57:53.158526,  3] ../auth/gensec/gensec_start.c:977(gensec_register)
  GENSEC backend 'gssapi_spnego' registered
[2020/02/23 12:57:53.158686,  3] ../auth/gensec/gensec_start.c:977(gensec_register)
  GENSEC backend 'gssapi_krb5' registered
[2020/02/23 12:57:53.158748,  3] ../auth/gensec/gensec_start.c:977(gensec_register)
  GENSEC backend 'gssapi_krb5_sasl' registered
[2020/02/23 12:57:53.158846,  3] ../auth/gensec/gensec_start.c:977(gensec_register)
  GENSEC backend 'spnego' registered
[2020/02/23 12:57:53.158997,  3] ../auth/gensec/gensec_start.c:977(gensec_register)
  GENSEC backend 'schannel' registered
[2020/02/23 12:57:53.159104,  3] ../auth/gensec/gensec_start.c:977(gensec_register)
  GENSEC backend 'naclrpc_as_system' registered
[2020/02/23 12:57:53.159166,  3] ../auth/gensec/gensec_start.c:977(gensec_register)
  GENSEC backend 'sasl-EXTERNAL' registered
[2020/02/23 12:57:53.159237,  3] ../auth/gensec/gensec_start.c:977(gensec_register)
  GENSEC backend 'ntlmssp' registered
[2020/02/23 12:57:53.159312,  3] ../auth/gensec/gensec_start.c:977(gensec_register)
  GENSEC backend 'ntlmssp_resume_ccache' registered
[2020/02/23 12:57:53.159411,  3] ../auth/gensec/gensec_start.c:977(gensec_register)
  GENSEC backend 'http_basic' registered
[2020/02/23 12:57:53.159528,  3] ../auth/gensec/gensec_start.c:977(gensec_register)
  GENSEC backend 'http_ntlm' registered
[2020/02/23 12:57:53.162354,  0] ../lib/util/fault.c:78(fault_report)
  ===============================================================
[2020/02/23 12:57:53.162627,  0] ../lib/util/fault.c:79(fault_report)
  INTERNAL ERROR: Signal 11 in pid 27594 (4.7.1)
  Please read the Trouble-Shooting section of the Samba HOWTO
[2020/02/23 12:57:53.162786,  0] ../lib/util/fault.c:81(fault_report)
  ===============================================================
[2020/02/23 12:57:53.162946,  0] ../source3/lib/util.c:804(smb_panic_s3)
  PANIC (pid 27594): internal error
[2020/02/23 12:57:53.165113,  0] ../source3/lib/util.c:915(log_stack_trace)
  BACKTRACE: 37 stack frames:
   #0 /lib64/libsmbconf.so.0(log_stack_trace+0x1a) [0x7f11c54c3a3a]
   #1 /lib64/libsmbconf.so.0(smb_panic_s3+0x20) [0x7f11c54c3b10]
   #2 /lib64/libsamba-util.so.0(smb_panic+0x2f) [0x7f11c75beeaf]
   #3 /lib64/libsamba-util.so.0(+0x250c6) [0x7f11c75bf0c6]
   #4 /lib64/libpthread.so.0(+0xf6d0) [0x7f11c7a266d0]
   #5 /usr/lib64/samba/libgse-samba4.so(+0x9530) [0x7f11bfb25530]
   #6 /usr/lib64/samba/libgse-samba4.so(gse_krb5_get_server_keytab+0xa5) [0x7f11bfb25f25]
   #7 /usr/lib64/samba/libgse-samba4.so(+0xc1d8) [0x7f11bfb281d8]
   #8 /usr/lib64/samba/libgensec-samba4.so(+0x19eba) [0x7f11bf90aeba]
   #9 /usr/lib64/samba/libgensec-samba4.so(gensec_start_mech_by_ops+0xc) [0x7f11bf90bcbc]
   #10 /usr/lib64/samba/libgensec-samba4.so(+0xac5c) [0x7f11bf8fbc5c]
   #11 /usr/lib64/samba/libgensec-samba4.so(+0xc214) [0x7f11bf8fd214]
   #12 /usr/lib64/samba/libgensec-samba4.so(gensec_update_ev+0x7f) [0x7f11bf90a6cf]
   #13 /usr/lib64/samba/libgensec-samba4.so(gensec_update+0x17) [0x7f11bf90a7c7]
   #14 /usr/lib64/samba/libsmbd-base-samba4.so(negprot_spnego+0xa9) [0x7f11c715ef09]
   #15 /usr/lib64/samba/libsmbd-base-samba4.so(smbd_smb2_request_process_negprot+0x2ca) [0x7f11c71d930a]
   #16 /usr/lib64/samba/libsmbd-base-samba4.so(smbd_smb2_request_dispatch+0x1bcc) [0x7f11c71d609c]
   #17 /usr/lib64/samba/libsmbd-base-samba4.so(smbd_smb2_process_negprot+0x370) [0x7f11c71d8ac0]
   #18 /usr/lib64/samba/libsmbd-base-samba4.so(reply_negprot+0x72e) [0x7f11c715fe7e]
   #19 /usr/lib64/samba/libsmbd-base-samba4.so(+0x19ec90) [0x7f11c71c0c90]
   #20 /usr/lib64/samba/libsmbd-base-samba4.so(+0x1a0a30) [0x7f11c71c2a30]
   #21 /usr/lib64/samba/libsmbd-base-samba4.so(+0x1a2111) [0x7f11c71c4111]
   #22 /lib64/libtevent.so.0(+0xaedb) [0x7f11c3ecfedb]
   #23 /lib64/libtevent.so.0(+0x92a7) [0x7f11c3ece2a7]
   #24 /lib64/libtevent.so.0(_tevent_loop_once+0x9d) [0x7f11c3eca0cd]
   #25 /lib64/libtevent.so.0(tevent_common_loop_wait+0x1b) [0x7f11c3eca2fb]
   #26 /lib64/libtevent.so.0(+0x9247) [0x7f11c3ece247]
   #27 /usr/lib64/samba/libsmbd-base-samba4.so(smbd_process+0x6e4) [0x7f11c71c5444]
   #28 /usr/sbin/smbd(+0xd1d4) [0x55dc9e23f1d4]
   #29 /lib64/libtevent.so.0(+0xaedb) [0x7f11c3ecfedb]
   #30 /lib64/libtevent.so.0(+0x92a7) [0x7f11c3ece2a7]
   #31 /lib64/libtevent.so.0(_tevent_loop_once+0x9d) [0x7f11c3eca0cd]
   #32 /lib64/libtevent.so.0(tevent_common_loop_wait+0x1b) [0x7f11c3eca2fb]
   #33 /lib64/libtevent.so.0(+0x9247) [0x7f11c3ece247]
   #34 /usr/sbin/smbd(main+0x1afe) [0x55dc9e23a25e]
   #35 /lib64/libc.so.6(__libc_start_main+0xf5) [0x7f11c3b1a445]
   #36 /usr/sbin/smbd(+0x8571) [0x55dc9e23a571]
[2020/02/23 12:57:53.166810,  0] ../source3/lib/dumpcore.c:315(dump_core)
  dumping core in /var/log/samba/cores/smbd
[2020/02/23 12:57:53.178604,  3] ../source3/smbd/server.c:872(remove_child_pid)
  ../source3/smbd/server.c:872 Unclean shutdown of pid 27594
[2020/02/23 12:57:53.178726,  1] ../source3/smbd/server.c:881(remove_child_pid)
  Scheduled cleanup of brl and lock database after unclean shutdown
[2020/02/23 12:58:13.198712,  1] ../source3/smbd/smbd_cleanupd.c:99(smbd_cleanupd_unlock)
  smbd_cleanupd_unlock: Cleaning up brl and lock database after unclean shutdown
[2020/02/23 13:00:29.876630,  4] ../source3/smbd/sec_ctx.c:320(set_sec_ctx_internal)
  setting sec ctx (0, 0) – sec_ctx_stack_ndx = 0
[2020/02/23 13:00:29.877861,  4] ../source3/smbd/sec_ctx.c:320(set_sec_ctx_internal)
  setting sec ctx (0, 0) – sec_ctx_stack_ndx = 0
[2020/02/23 13:00:29.877945,  4] ../source3/smbd/sec_ctx.c:320(set_sec_ctx_internal)
  setting sec ctx (0, 0) – sec_ctx_stack_ndx = 0
[2020/02/23 13:00:29.877995,  4] ../source3/smbd/sec_ctx.c:320(set_sec_ctx_internal)
  setting sec ctx (0, 0) – sec_ctx_stack_ndx = 0
[2020/02/23 13:00:29.879725,  3] ../source3/smbd/server_exit.c:248(exit_server_common)
  Server exit (termination signal)
[2020/02/23 13:00:30.020799,  3] ../source3/param/loadparm.c:3872(lp_load_ex)
  lp_load_ex: refreshing parameters
[2020/02/23 13:00:30.020947,  3] ../source3/param/loadparm.c:548(init_globals)
  Initialising global parameters
[2020/02/23 13:00:30.021188,  3] ../source3/param/loadparm.c:2786(lp_do_section)
  Processing section "[global]"
  doing parameter realm = MDS.XYZ
  doing parameter workgroup = MDS.XYZ
  doing parameter security = ads
  doing parameter kerberos method = secrets and keytab
  doing parameter template homedir = /n/%d/%u
  doing parameter idmap config * : backend = tdb
  doing parameter idmap config * : range = 10000 – 199999999999
  doing parameter idmap config MDS : backend = sss
  doing parameter idmap config MDS : range = 200000-2147483647
  doing parameter passdb backend = tdbsam
  doing parameter load printers = yes
  doing parameter printing = cups
  doing parameter printcap name = cups
  doing parameter cups options = raw
  doing parameter log level = 4
  doing parameter max protocol = SMB3
  doing parameter min protocol = NT1
  doing parameter local master = no
  doing parameter disable spoolss = yes
[2020/02/23 13:00:30.021871,  2] ../source3/param/loadparm.c:2803(lp_do_section)
  Processing section "[homes]"
  doing parameter comment = Home Directories
  doing parameter valid users = %S, %D%w%S
  doing parameter browseable = No
  doing parameter read only = No
  doing parameter inherit acls = Yes
[2020/02/23 13:00:30.022227,  2] ../source3/param/loadparm.c:2803(lp_do_section)
  Processing section "[printers]"
  doing parameter comment = All Printers
  doing parameter path = /var/tmp
  doing parameter printable = Yes
  doing parameter create mask = 0600
  doing parameter browseable = No
[2020/02/23 13:00:30.022460,  2] ../source3/param/loadparm.c:2803(lp_do_section)
  Processing section "[NFS-tom]"
  doing parameter comment = NFS Shared Storage – Tom
  doing parameter path = /n/mds.xyz/tom
  doing parameter valid users = tom@mds.xyz
  doing parameter public = no
  doing parameter writable = yes
  doing parameter read only = no
  doing parameter browseable = yes
  doing parameter guest ok = no
  doing parameter printable = no
  doing parameter write list = tom@mds.xyz
  doing parameter directory mask = 0775
  doing parameter create mask = 664
[2020/02/23 13:00:30.023044,  2] ../source3/param/loadparm.c:2803(lp_do_section)
  Processing section "[bob@mds.xyz]"
  doing parameter comment = NFS Shared Storage – Bob
  doing parameter path = /n/mds.xyz/bob
  doing parameter valid users = bob@mds.xyz
  doing parameter public = no
  doing parameter writable = yes
  doing parameter read only = no
  doing parameter browseable = yes
  doing parameter guest ok = yes
  doing parameter printable = no
  doing parameter write list = bob@mds.xyz
  doing parameter directory mask = 0775
  doing parameter create mask = 664
[2020/02/23 13:00:30.023553,  2] ../source3/param/loadparm.c:2803(lp_do_section)
  Processing section "[NFS-root]"
  doing parameter comment = NFS Shared Storage – root
  doing parameter path = /n
  doing parameter valid users = root
  doing parameter public = no
  doing parameter writable = yes
  doing parameter read only = no
  doing parameter browseable = yes
  doing parameter guest ok = no
  doing parameter printable = no
  doing parameter write list = root
  doing parameter directory mask = 0775
  doing parameter create mask = 664
[2020/02/23 13:00:30.024085,  2] ../source3/param/loadparm.c:2803(lp_do_section)
  Processing section "[print$]"
  doing parameter comment = Printer Drivers
  doing parameter path = /var/lib/samba/drivers
  doing parameter write list = @printadmin root
  doing parameter force group = @printadmin
  doing parameter create mask = 0664
  doing parameter directory mask = 0775
[2020/02/23 13:00:30.024440,  4] ../source3/param/loadparm.c:3914(lp_load_ex)
  pm_process() returned Yes
[2020/02/23 13:00:30.024567,  3] ../source3/param/loadparm.c:1621(lp_add_ipc)
  adding IPC service
[2020/02/23 13:00:30.026316,  2] ../source3/lib/interface.c:345(add_interface)
  added interface eth0 ip=192.168.0.80 bcast=192.168.0.80 netmask=255.255.255.255
[2020/02/23 13:00:30.026434,  2] ../source3/lib/interface.c:345(add_interface)
  added interface eth0 ip=192.168.0.125 bcast=192.168.0.255 netmask=255.255.255.0
[2020/02/23 13:00:30.026525,  3] ../source3/smbd/server.c:1810(main)
  loaded services
[2020/02/23 13:00:30.030177,  1] ../source3/profile/profile.c:51(set_profile_level)
  INFO: Profiling turned OFF from pid 27888
[2020/02/23 13:00:30.030296,  3] ../source3/smbd/server.c:1830(main)
  Standard input is not a socket, assuming -D option
[2020/02/23 13:00:30.030338,  3] ../source3/smbd/server.c:1842(main)
  Becoming a daemon.
[2020/02/23 13:00:30.031339,  2] ../source3/passdb/pdb_interface.c:161(make_pdb_method_name)
  No builtin backend found, trying to load plugin
[2020/02/23 13:00:30.034313,  3] ../lib/util/modules.c:167(load_module_absolute_path)
  load_module_absolute_path: Module '/usr/lib64/samba/pdb/tdbsam.so' loaded
[2020/02/23 13:00:30.042561,  3] ../source3/lib/util_procid.c:54(pid_to_procid)
  pid_to_procid: messaging_dgm_get_unique failed: No such file or directory
[2020/02/23 13:00:30.077473,  4] ../source3/smbd/sec_ctx.c:216(push_sec_ctx)
  push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
[2020/02/23 13:00:30.077583,  4] ../source3/smbd/uid.c:558(push_conn_ctx)
  push_conn_ctx(0) : conn_ctx_stack_ndx = 0
[2020/02/23 13:00:30.077631,  4] ../source3/smbd/sec_ctx.c:320(set_sec_ctx_internal)
  setting sec ctx (0, 0) – sec_ctx_stack_ndx = 1
[2020/02/23 13:00:30.077924,  4] ../source3/passdb/pdb_tdb.c:558(tdbsam_open)
  tdbsam_open: successfully opened /var/lib/samba/private/passdb.tdb
[2020/02/23 13:00:30.078018,  4] ../source3/smbd/sec_ctx.c:438(pop_sec_ctx)
  pop_sec_ctx (0, 0) – sec_ctx_stack_ndx = 0
[2020/02/23 13:00:30.078072,  4] ../source3/smbd/sec_ctx.c:216(push_sec_ctx)
  push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
[2020/02/23 13:00:30.078108,  4] ../source3/smbd/uid.c:558(push_conn_ctx)
  push_conn_ctx(0) : conn_ctx_stack_ndx = 0
[2020/02/23 13:00:30.078140,  4] ../source3/smbd/sec_ctx.c:320(set_sec_ctx_internal)
  setting sec ctx (0, 0) – sec_ctx_stack_ndx = 1
[2020/02/23 13:00:30.078352,  4] ../source3/smbd/sec_ctx.c:438(pop_sec_ctx)
  pop_sec_ctx (0, 0) – sec_ctx_stack_ndx = 0
[2020/02/23 13:00:30.085483,  4] ../source3/smbd/sec_ctx.c:216(push_sec_ctx)
  push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
[2020/02/23 13:00:30.085569,  4] ../source3/smbd/uid.c:558(push_conn_ctx)
  push_conn_ctx(0) : conn_ctx_stack_ndx = 0
[2020/02/23 13:00:30.085632,  4] ../source3/smbd/sec_ctx.c:320(set_sec_ctx_internal)
  setting sec ctx (0, 0) – sec_ctx_stack_ndx = 1
[2020/02/23 13:00:30.085920,  3] ../source3/auth/token_util.c:681(finalize_local_nt_token)
  Failed to fetch domain sid for MDS.XYZ
[2020/02/23 13:00:30.086009,  4] ../source3/smbd/sec_ctx.c:438(pop_sec_ctx)
  pop_sec_ctx (0, 0) – sec_ctx_stack_ndx = 0
[2020/02/23 13:00:30.086101,  4] ../source3/smbd/sec_ctx.c:216(push_sec_ctx)
  push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
[2020/02/23 13:00:30.086152,  4] ../source3/smbd/uid.c:558(push_conn_ctx)
  push_conn_ctx(0) : conn_ctx_stack_ndx = 0
[2020/02/23 13:00:30.086189,  4] ../source3/smbd/sec_ctx.c:320(set_sec_ctx_internal)
  setting sec ctx (0, 0) – sec_ctx_stack_ndx = 1
[2020/02/23 13:00:30.086316,  4] ../source3/smbd/sec_ctx.c:438(pop_sec_ctx)
  pop_sec_ctx (0, 0) – sec_ctx_stack_ndx = 0
[2020/02/23 13:00:30.086377,  3] ../source3/auth/token_util.c:708(finalize_local_nt_token)
  Failed to check for local Administrators membership (NT_STATUS_INVALID_PARAMETER_MIX)
[2020/02/23 13:00:30.086461,  4] ../source3/smbd/sec_ctx.c:216(push_sec_ctx)
  push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
[2020/02/23 13:00:30.086512,  4] ../source3/smbd/uid.c:558(push_conn_ctx)
  push_conn_ctx(0) : conn_ctx_stack_ndx = 0
[2020/02/23 13:00:30.086551,  4] ../source3/smbd/sec_ctx.c:320(set_sec_ctx_internal)
  setting sec ctx (0, 0) – sec_ctx_stack_ndx = 1
[2020/02/23 13:00:30.086673,  4] ../source3/smbd/sec_ctx.c:438(pop_sec_ctx)
  pop_sec_ctx (0, 0) – sec_ctx_stack_ndx = 0
[2020/02/23 13:00:30.086749,  4] ../source3/smbd/sec_ctx.c:216(push_sec_ctx)
  push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
[2020/02/23 13:00:30.086798,  4] ../source3/smbd/uid.c:558(push_conn_ctx)
  push_conn_ctx(0) : conn_ctx_stack_ndx = 0
[2020/02/23 13:00:30.086835,  4] ../source3/smbd/sec_ctx.c:320(set_sec_ctx_internal)
  setting sec ctx (0, 0) – sec_ctx_stack_ndx = 1
[2020/02/23 13:00:30.086970,  4] ../source3/smbd/sec_ctx.c:438(pop_sec_ctx)
  pop_sec_ctx (0, 0) – sec_ctx_stack_ndx = 0
[2020/02/23 13:00:30.087036,  3] ../source3/auth/token_util.c:780(finalize_local_nt_token)
  Failed to check for local Guests membership (NT_STATUS_INVALID_PARAMETER_MIX)
[2020/02/23 13:00:30.087099,  0] ../source3/auth/auth_util.c:1382(make_new_session_info_guest)
  create_local_token failed: NT_STATUS_NO_MEMORY
[2020/02/23 13:00:30.087802,  0] ../source3/smbd/server.c:2000(main)
  ERROR: failed to setup guest info.
^C
[root@nfs03 samba]#
 

Solve it by:

yum upgrade samba from 4.7.1. to 4.9.1 . 

Cheers,
TK