[Samba] segfault during net rpc printer migrate drivers

[Dr. Hansjörg Maurer]

Hi

I am trying to migrate an old printserver from one samba4 (4.8.11 on 
CentOS-6) server to a newer one (4.11.2 on CentOS-8)
using

net rpc printer migrate all

The migration of queue, forms, securitty, settings works, during the 
migration of the drivers (net rpc printer migrate drivers)  the command 
dumps core at the first driver

Here a level10 output

      spoolss_AddPrinterDriver: struct spoolss_AddPrinterDriver
         in: struct spoolss_AddPrinterDriver
             servername               : *
                 servername               : '\\127.0.0.1'
             info_ctr                 : *
                 info_ctr: struct spoolss_AddDriverInfoCtr
                     level                    : 0x00000003 (3)
                     info                     : union 
spoolss_AddDriverInfo(case 3)
                     info3                    : *
                         info3: struct spoolss_AddDriverInfo3
                             version                  : 
SPOOLSS_DRIVER_VERSION_200X (3)
                             driver_name              : *
                                 driver_name              : 'hp9050-1'
                             architecture             : *
                                 architecture             : 'Windows NT x86'
                             driver_path              : *
                                 driver_path              : 
'\\RM-SAMBA01\print$\W32X86\3\pscript5.dll'
                             data_file                : *
                                 data_file                : 
'\\RM-SAMBA01\print$\W32X86\3\hp9050-1.ppd'
                             config_file              : *
                                 config_file              : 
'\\RM-SAMBA01\print$\W32X86\3\ps5ui.dll'
                             help_file                : *
                                 help_file                : 
'\\RM-SAMBA01\print$\W32X86\3\pscript.hlp'
                             monitor_name             : *
                                 monitor_name             : 'JBV'
                             default_datatype         : *
                                 default_datatype         : ''
Bus error (core dumped)

Oct 27 15:22:26 rmc-printserver01 kernel: net[104782]: segfault at 
ffffffff0006001c ip 00007feb997dc96a sp 00007ffd9c982cd0 error 5 in 
libndr-standard.so.0.0.1[7feb99776000+31f000]


an enumdrivers 3 on the source system shows

[Windows NT x86]
Printer Driver Info 3:
         Version: [3]
         Driver Name: [hp9050-1]
         Architecture: [Windows NT x86]
         Driver Path: [\\RM-SAMBA01\print$\W32X86\3\pscript5.dll]
         Datafile: [\\RM-SAMBA01\print$\W32X86\3\hp9050-1.ppd]
         Configfile: [\\RM-SAMBA01\print$\W32X86\3\ps5ui.dll]
         Helpfile: [\\RM-SAMBA01\print$\W32X86\3\pscript.hlp]
         Dependentfiles: [\\RM-SAMBA01\print$\W32X86\3\pscript5.dll]
         Dependentfiles: [\\RM-SAMBA01\print$\W32X86\3\hp9050-1.ppd]
         Dependentfiles: [\\RM-SAMBA01\print$\W32X86\3\ps5ui.dll]
         Dependentfiles: [\\RM-SAMBA01\print$\W32X86\3\pscript.hlp]
         Dependentfiles: [\\RM-SAMBA01\print$\W32X86\3\pscript.ntf]
         Dependentfiles: [\\RM-SAMBA01\print$\W32X86\3\cups6.ini]
         Dependentfiles: [\\RM-SAMBA01\print$\W32X86\3\cupsps6.dll]
         Dependentfiles: [\\RM-SAMBA01\print$\W32X86\3\cupsui6.dll]
         Monitorname: []
         Defaultdatatype: [RAW]


It there somthing wrong with the monitor_name?

I have tried the command with a different system/driver (both 
samba-4.11) and  I run into a similar problem


                    info3                    : *
                         info3: struct spoolss_AddDriverInfo3
                             version                  : 
SPOOLSS_DRIVER_VERSION_200X (3)
                             driver_name              : *
                                 driver_name              : 'Dell 
C3765dnf Color MFP PCL6'
                             architecture             : *
                                 architecture             : 'Windows x64'
                             driver_path              : *
                                 driver_path              : 
'\\SERV01\print$\x64\3\dlxcmzim.dll'
                             data_file                : *
                                 data_file                : 
'\\SERV01\print$\x64\3\dlxcmzk.ddd'
                             config_file              : *
                                 config_file              : 
'\\SERV01\print$\x64\3\dlxcmziv.dll'
                             help_file                : *
                                 help_file                : 
'\\SERV01\print$\x64\3\dlxcmz.chm'
                             monitor_name             : *
                                 monitor_name             : '@çbU'
                             default_datatype         : *
                                 default_datatype         : ''
                             _ndr_size_dependent_files: 0x00000000 (0)
                             dependent_files          : NULL
convert_string_internal: Conversion error: Incomplete multibyte 
sequence(@çbU)


Can I reset the monitor_name to something  net rpc printer migrate 
drivers can deal with?

Is there a different/better way to migrate the printer drivers to an new 
system?
I tried to sync the print$ share contents, but the settings etc seems to 
be stored in a registry file.
And the old server has additional smb shares, which should not be migrated.

Therefore I did not sync the whole /var/lib/samba directory with all tdb 
files

Regards

Hansjörg



-- 
Dr. Hansjörg Maurer
itsystems Deutschland AG
Erzgießereistr. 22
80335 München
Tel:   +49-89-52 04 68-41
Fax:   +49-89-52 04 68-59
E-Mail:hansjoerg.maurer at itsd.de
Web:http://www.itsd.de


Amtsgericht München HRB 132146
USt-IdNr. DE 812991301
Steuer-Nr. 143/100/81575

Aufsichtsratsvorsitzender:
Stefan Adam
Vorstand:
Dr. Michael Krocka
Dr. Hansjörg Maurer



----------------------------
Unser System ist mit einem Mailverschluesselungs-Gateway ausgestattet. Wenn Sie moechten, dass an Sie gerichtete E-Mails verschluesselt werden, senden Sie einfach eine S/MIME-signierte E-Mail oder Ihren PGP Public Key an hansjoerg.maurer at itsd.de.

Our system is equipped with an email encryption gateway. If you want email sent to you to be encrypted please send a S/MIME signed email or your PGP public key to hansjoerg.maurer at itsd.de.