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[Bug 2110127] [NEW] samba-tool fails to set GPO MOTD on s390x

To: enterprise-support@xxxxxxxxxxxxxxxxxxx
From: Andreas Hasenack <2110127@xxxxxxxxxxxxxxxxxx>
Date: Wed, 07 May 2025 13:15:24 -0000
Reply-to: Bug 2110127 <2110127@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx
Public bug reported:

This was seen in autopkgtests[1] and only happens on s390x:

756s ## MOTD GPO tests (server only)
756s
756s ## Setting MOTD GPO text to "Welcome1"
756s WARNING: Using passwords on command line is insecure. Installing the setproctitle python module will hide these from shortly after program start.
756s ERROR(runtime): uncaught exception - (3221225480, 'An invalid HANDLE was specified.')
756s   File "/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line 353, in _run
756s     return self.run(*args, **kwargs)
756s            ~~~~~~~~^^^^^^^^^^^^^^^^^
756s   File "/usr/lib/python3/dist-packages/samba/netcmd/gpo.py", line 3852, in run
756s     reg.increment_gpt_ini(machine_changed=True)
756s     ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
756s   File "/usr/lib/python3/dist-packages/samba/policies.py", line 198, in increment_gpt_ini
756s     self.__save_file(self.pol_dir % '', GPT_INI,
756s     ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
756s                      out_data.read().encode('utf-8'))
756s                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
756s   File "/usr/lib/python3/dist-packages/samba/policies.py", line 99, in __save_file
756s     self.conn.set_acl(file_name, self.fs_sd)
756s     ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
756s   File "/usr/lib/python3/dist-packages/samba/samba3/libsmb_samba_internal.py", line 128, in set_acl
756s     self.set_sd(fnum, sd, sinfo)
756s     ~~~~~~~~~~~^^^^^^^^^^^^^^^^^

The command is:

    samba-tool gpo manage motd set "${GPO}" "${motd_text1}" -U
"Administrator%${adminpass}" || return 1

I also reported[2] it to samba-technical recently, but I think a bug
upstream is warranted. I tried debugging this a bit, but it ends up deep
in samba RPC calls, and I didn't spot any obvious endianess problem at
first glance.

This is importance "high" because it's blocking migration. It might be
best to skip this test on s390x for now, or ignore the failure there for
now.

1. https://objectstorage.prodstack5.canonical.com/swift/v1/AUTH_0f9aae918d5b4744bf7b827671c86842/autopkgtest-questing/questing/s390x/s/samba/20250507_110140_e7046@/log.gz
2. https://lists.samba.org/archive/samba-technical/2025-May/139410.html

** Affects: samba (Ubuntu)
     Importance: High
     Assignee: Andreas Hasenack (ahasenack)
         Status: Triaged


** Tags: server-todo update-excuse

** Description changed:

  This was seen in autopkgtests[1] and only happens on s390x:
  
  756s ## MOTD GPO tests (server only)
- 756s 
+ 756s
  756s ## Setting MOTD GPO text to "Welcome1"
  756s WARNING: Using passwords on command line is insecure. Installing the setproctitle python module will hide these from shortly after program start.
  756s ERROR(runtime): uncaught exception - (3221225480, 'An invalid HANDLE was specified.')
  756s   File "/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line 353, in _run
  756s     return self.run(*args, **kwargs)
  756s            ~~~~~~~~^^^^^^^^^^^^^^^^^
  756s   File "/usr/lib/python3/dist-packages/samba/netcmd/gpo.py", line 3852, in run
  756s     reg.increment_gpt_ini(machine_changed=True)
  756s     ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
  756s   File "/usr/lib/python3/dist-packages/samba/policies.py", line 198, in increment_gpt_ini
  756s     self.__save_file(self.pol_dir % '', GPT_INI,
  756s     ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  756s                      out_data.read().encode('utf-8'))
  756s                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  756s   File "/usr/lib/python3/dist-packages/samba/policies.py", line 99, in __save_file
  756s     self.conn.set_acl(file_name, self.fs_sd)
  756s     ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
  756s   File "/usr/lib/python3/dist-packages/samba/samba3/libsmb_samba_internal.py", line 128, in set_acl
  756s     self.set_sd(fnum, sd, sinfo)
  756s     ~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  
  The command is:
  
-     samba-tool gpo manage motd set "${GPO}" "${motd_text1}" -U
+     samba-tool gpo manage motd set "${GPO}" "${motd_text1}" -U
  "Administrator%${adminpass}" || return 1
  
- 
- I also reported it to samba-technical recently, but I think a bug upstream is warranted. I tried debugging this a bit, but it ends up deep in samba RPC calls, and I didn't spot any obvious endianess problem at first glance.
+ I also reported[2] it to samba-technical recently, but I think a bug
+ upstream is warranted. I tried debugging this a bit, but it ends up deep
+ in samba RPC calls, and I didn't spot any obvious endianess problem at
+ first glance.
  
  This is importance "high" because it's blocking migration. It might be
  best to skip this test on s390x for now, or ignore the failure there for
  now.
  
- 1.
- https://objectstorage.prodstack5.canonical.com/swift/v1/AUTH_0f9aae918d5b4744bf7b827671c86842/autopkgtest-
- questing/questing/s390x/s/samba/20250507_110140_e7046@/log.gz
+ 1. https://objectstorage.prodstack5.canonical.com/swift/v1/AUTH_0f9aae918d5b4744bf7b827671c86842/autopkgtest-questing/questing/s390x/s/samba/20250507_110140_e7046@/log.gz
+ 2. https://lists.samba.org/archive/samba-technical/2025-May/139409.html

** Changed in: samba (Ubuntu)
     Assignee: (unassigned) => Andreas Hasenack (ahasenack)

** Tags added: server-todo

** Description changed:

  This was seen in autopkgtests[1] and only happens on s390x:
  
  756s ## MOTD GPO tests (server only)
  756s
  756s ## Setting MOTD GPO text to "Welcome1"
  756s WARNING: Using passwords on command line is insecure. Installing the setproctitle python module will hide these from shortly after program start.
  756s ERROR(runtime): uncaught exception - (3221225480, 'An invalid HANDLE was specified.')
  756s   File "/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line 353, in _run
  756s     return self.run(*args, **kwargs)
  756s            ~~~~~~~~^^^^^^^^^^^^^^^^^
  756s   File "/usr/lib/python3/dist-packages/samba/netcmd/gpo.py", line 3852, in run
  756s     reg.increment_gpt_ini(machine_changed=True)
  756s     ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
  756s   File "/usr/lib/python3/dist-packages/samba/policies.py", line 198, in increment_gpt_ini
  756s     self.__save_file(self.pol_dir % '', GPT_INI,
  756s     ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  756s                      out_data.read().encode('utf-8'))
  756s                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  756s   File "/usr/lib/python3/dist-packages/samba/policies.py", line 99, in __save_file
  756s     self.conn.set_acl(file_name, self.fs_sd)
  756s     ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
  756s   File "/usr/lib/python3/dist-packages/samba/samba3/libsmb_samba_internal.py", line 128, in set_acl
  756s     self.set_sd(fnum, sd, sinfo)
  756s     ~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  
  The command is:
  
      samba-tool gpo manage motd set "${GPO}" "${motd_text1}" -U
  "Administrator%${adminpass}" || return 1
  
  I also reported[2] it to samba-technical recently, but I think a bug
  upstream is warranted. I tried debugging this a bit, but it ends up deep
  in samba RPC calls, and I didn't spot any obvious endianess problem at
  first glance.
  
  This is importance "high" because it's blocking migration. It might be
  best to skip this test on s390x for now, or ignore the failure there for
  now.
  
  1. https://objectstorage.prodstack5.canonical.com/swift/v1/AUTH_0f9aae918d5b4744bf7b827671c86842/autopkgtest-questing/questing/s390x/s/samba/20250507_110140_e7046@/log.gz
- 2. https://lists.samba.org/archive/samba-technical/2025-May/139409.html
+ 2. https://lists.samba.org/archive/samba-technical/2025-May/139410.html

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https://bugs.launchpad.net/bugs/2110127

Title:
  samba-tool fails to set GPO MOTD on s390x

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