samba-tool SIGSEGV

[Tom Robinson]

Hi,

Not sure if I should post in samba-technical or just samba list. Please advise.

Back in February I was trying to do a samba-tool classicupgrade but kept getting SIGSEGV:

https://lists.samba.org/archive/samba/2017-February/206409.html

I didn't progress much after that.

This week I've compiled samba-4.6.5 and installed that. Following the HOW-TO for classic upgrade
(https://wiki.samba.org/index.php/Migrating_a_Samba_NT4_Domain_to_Samba_AD_(Classic_Upgrade) ), I've
tried again but I'm still getting SIGSEGV.

# cat /etc/redhat-release CentOS Linux release 7.3.1611 (Core)

# samba-tool --version
4.6.5

# gdb --args python /usr/bin/samba-tool domain classicupgrade --dbdir=/var/lib/samba/bentley
--realm=mrc.motec.com.au --dns-backend=BIND9_DLZ /etc/samba/smb.bentley.conf

GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-94.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/bin/python2.7...Reading symbols from
/usr/lib/debug/usr/bin/python2.7.debug...done.
done.
(gdb) run
Starting program: /usr/bin/python /usr/bin/samba-tool domain classicupgrade
--dbdir=/var/lib/samba/bentley --realm=mrc.motec.com.au --dns-backend=BIND9_DLZ
/etc/samba/smb.bentley.conf
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Detaching after fork from child process 8647.
Detaching after fork from child process 8649.
Reading smb.conf
Unknown parameter encountered: "share modes"
Ignoring unknown parameter "share modes"
Provisioning
Attempting to register passdb backend samba_dsdb
Successfully added passdb backend 'samba_dsdb'
Attempting to register passdb backend samba4
Successfully added passdb backend 'samba4'
Attempting to find a passdb backend to match ldapsam:"ldaps://ldap.motec.com.au" (ldapsam)
No builtin backend found, trying to load plugin
Attempting to register passdb backend ldapsam
Successfully added passdb backend 'ldapsam'
Attempting to register passdb backend NDS_ldapsam
Successfully added passdb backend 'NDS_ldapsam'
Attempting to register passdb backend IPA_ldapsam
Successfully added passdb backend 'IPA_ldapsam'
Found pdb backend ldapsam
pdb backend ldapsam:"ldaps://ldap.motec.com.au" has a valid init
ldapsam_getsampwnam: Unable to locate user [CROFT$] count=0
Exporting account policy
Detaching after fork from child process 8651.
Exporting groups
ldapsam_setsamgrent: 38 entries in the base!
init_group_from_ldap: Entry found for group: gid1
---8<---*snip*---8<---
init_group_from_ldap: Entry found for group: lastgid
ldapsam_enum_aliasmem: Did not find alias
Ignoring group 'Administrators' S-1-5-32-544 listed but then not found: Unable to enumerate members
for alias, (-1073741487,The specified local group does not exist.)
ldapsam_enum_aliasmem: Did not find alias
Ignoring group 'Account Operators' S-1-5-32-548 listed but then not found: Unable to enumerate
members for alias, (-1073741487,The specified local group does not exist.)
ldapsam_enum_aliasmem: Did not find alias
Ignoring group 'Print Operators' S-1-5-32-550 listed but then not found: Unable to enumerate members
for alias, (-1073741487,The specified local group does not exist.)
ldapsam_enum_aliasmem: Did not find alias
Ignoring group 'Backup Operators' S-1-5-32-551 listed but then not found: Unable to enumerate
members for alias, (-1073741487,The specified local group does not exist.)
ldapsam_enum_aliasmem: Did not find alias
Ignoring group 'Replicators' S-1-5-32-552 listed but then not found: Unable to enumerate members for
alias, (-1073741487,The specified local group does not exist.)
Exporting users
  Skipping wellknown rid=500 (for username=root)
init_sam_from_ldap: Entry found for user: nobody
Attempting to find a passdb backend to match ldapsam:"ldaps://ldap.motec.com.au" (ldapsam)
Found pdb backend ldapsam
pdb backend ldapsam:"ldaps://ldap.motec.com.au" has a valid init
Opening cache file at /var/lib/samba/login_cache.tdb
init_sam_from_ldap: Entry found for user: user1
---8<---*snip*---8<---
init_sam_from_ldap: Entry found for user: lastuser
Next rid = 13001

Program received signal SIGSEGV, Segmentation fault.
lpcfg_tls_verify_peer (lp_ctx=0x0) at default/lib/param/param_functions.c:355
355     FN_GLOBAL_INTEGER(tls_verify_peer, tls_verify_peer)
(gdb)

Any help appreciated.

Kind regards,
Tom

-- 

Tom Robinson
IT Manager/System Administrator

MoTeC Pty Ltd

121 Merrindale Drive
Croydon South
3136 Victoria
Australia

T: +61 3 9761 5050
F: +61 3 9761 5051   
E: tom.robinson at motec.com.au


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