Can't upgrade samba-common-bin: undefined symbol: smb_strtoul

[Peter de Kraker]

I upgraded my 18.04 system to 20.04 a week ago. Today I did a apt-get dist-upgrade and new Samba version where there, and I tried upgrading. However, I got the following error:

Setting up samba-common-bin (2:4.11.6+dfsg-0ubuntu1.1) ...
Checking smb.conf with testparm
testparm: symbol lookup error: /usr/lib/x86_64-linux-gnu/samba/libsamba-sockets.so.0: undefined symbol: smb_strtoul, version SAMBA_UTIL_0.0.1
dpkg: error processing package samba-common-bin (--configure):
 installed samba-common-bin package post-installation script subprocess returned error exit status 127
dpkg: dependency problems prevent configuration of samba:
 samba depends on samba-common-bin (= 2:4.11.6+dfsg-0ubuntu1.1); however:
  Package samba-common-bin is not configured yet.

dpkg: error processing package samba (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                          Errors were encountered while processing:
 samba-common-bin
 samba
E: Sub-process /usr/bin/dpkg returned an error code (1)

It seems to fail at testparm of smb.conf, so I reverted that one temporarily to the standard smb.conf, not my own customized one. Still it always fails.
I removed all samba and smb packages, and reinstalled, same issue.

Description: Ubuntu 20.04 LTS
Release: 20.04

[Andreas Hasenack (ahasenack)]

You may have had an old samba from 18.04 still installing, as a result of your release upgrade. Could you please run this command and show the output?

dpkg -l | grep -E "(samba|smb|registry-tools|winbind|libwbclient|ctdb)"

[Paride Legovini (paride)]

Hello Peter and thanks for this bug report. Could you please copy and paste the output of the following command:

  dpkg -l 'samba*'

ran on the affected system? I can't reproduce the problem, so I'd like to see which arch you are using and the exact versions of all the samba* packages.

Does it crash if you just run 'testparm' manually?

I'm marking this report as Incomplete for the moment. Please change the status back to New after commenting back. Thanks!

[Peter de Kraker (peterdekraker)]

dpkg -l | grep -E "(samba|smb|registry-tools|winbind|libwbclient|ctdb)"
ii libsmbclient:amd64 2:4.11.6+dfsg-0ubuntu1.1 amd64 shared library for communication with SMB/CIFS servers
ii libsmbios-c2 2.4.3-1 amd64 Provide access to (SM)BIOS information -- dynamic library
ii libwbclient0:amd64 2:4.11.6+dfsg-0ubuntu1.1 amd64 Samba winbind client library
ii python3-samba 2:4.11.6+dfsg-0ubuntu1.1 amd64 Python 3 bindings for Samba
iU samba 2:4.11.6+dfsg-0ubuntu1.1 amd64 SMB/CIFS file, print, and login server for Unix
ii samba-common 2:4.11.6+dfsg-0ubuntu1.1 all common files used by both the Samba server and client
iF samba-common-bin 2:4.11.6+dfsg-0ubuntu1.1 amd64 Samba common files used by both the server and the client
ii samba-dsdb-modules:amd64 2:4.11.6+dfsg-0ubuntu1.1 amd64 Samba Directory Services Database
ii samba-libs:amd64 2:4.11.6+dfsg-0ubuntu1.1 amd64 Samba core libraries
ii samba-vfs-modules:amd64 2:4.11.6+dfsg-0ubuntu1.1 amd64 Samba Virtual FileSystem plugins

dpkg -l 'samba*'
Gevraagd=(U)onbekend/(I)nstalleren/ve(R)wijderen/(P)wissen/(H)ouden
| Status=Niet/Inst/Conf/Uitgep/halF-geconf/Halfgeïnst/verWacht-trig/Trig-bezig
|/ Fout?=(geen)/heRinst. nodig/ (Status,Fout: hoofdletter=ernstig)
||/ Naam Versie Architectuur Omschrijving
+++-========================-========================-============-================================>
iU samba 2:4.11.6+dfsg-0ubuntu1.1 amd64 SMB/CIFS file, print, and login >
ii samba-common 2:4.11.6+dfsg-0ubuntu1.1 all common files used by both the Sa>
iF samba-common-bin 2:4.11.6+dfsg-0ubuntu1.1 amd64 Samba common files used by both >
ii samba-dsdb-modules:amd64 2:4.11.6+dfsg-0ubuntu1.1 amd64 Samba Directory Services Database
ii samba-libs:amd64 2:4.11.6+dfsg-0ubuntu1.1 amd64 Samba core libraries
un samba-testsuite <geen> <geen> (geen beschrijving beschikbaar)
ii samba-vfs-modules:amd64 2:4.11.6+dfsg-0ubuntu1.1 amd64 Samba Virtual FileSystem plugins

I don't see any issues in that list.

I remember vaguely that I installed a self built Samba back then to use the OSX timemachine support. Maybe that is conflicting/still exists somewhere.

I did ran testparm myself, and got no issues.

Thanks for getting back to me!

[Peter de Kraker (peterdekraker)]

Ok, I found a install in /usr/lib and the source package in my home's tmp dir. I ran a make uninstall, and that removed everything samba related from /usr. I now can get past the error. Still some issues, but those seem to be not related to the Ubuntu package itself.

Thanks!

[Andreas Hasenack (ahasenack)]

Yeah, that was probably the cause. To finish fixing your system regarding the samba packages, you should be able to run these now:

sudo apt update
sudo apt -f install

Play close attention to what the last one tells you ("-f" stands for "fix"). If it doesn't look unreasonable and it's asking you to proceed, you may do so. In the end, the dpkg -l list should only contain "ii" or "rc" packages, not iU or iF which indicates problems.

[Andreas Hasenack (ahasenack)]

Sorry, "Pay close attention", not "Play" :)

[Peter de Kraker (peterdekraker)]

Thanks, issues are solved and after a reboot everything worked.

[Andreas Hasenack (ahasenack)]

Thanks for getting back to us. I'll close the bug.