package libpam-cgfs 2.0.7-0ubuntu1~17.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128

[Marco]

Error occurred while updating from terminal:
W: APT had planned for dpkg to do more than it reported back (40 vs 44).
   Affected packages: libpam-cgfs:amd64

ProblemType: Package
DistroRelease: Ubuntu 17.04
Package: libpam-cgfs 2.0.7-0ubuntu1~17.04.1
ProcVersionSignature: Ubuntu 4.10.0-22.24-generic 4.10.15
Uname: Linux 4.10.0-22-generic x86_64
ApportVersion: 2.20.4-0ubuntu4.1
Architecture: amd64
Date: Fri Jun 9 14:49:06 2017
ErrorMessage: subprocess installed post-installation script returned error exit status 128
InstallationDate: Installed on 2017-03-16 (84 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
RelatedPackageVersions:
 dpkg 1.18.10ubuntu2
 apt 1.4
SourcePackage: lxcfs
Title: package libpam-cgfs 2.0.7-0ubuntu1~17.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128
UpgradeStatus: Upgraded to zesty on 2017-04-18 (52 days ago)

[Serge Hallyn (serge-hallyn)]

Hi,

thanks for taking the time to report this bug.

This actually appears to be a problem not in libpam-cgfs itself:

Setting up libpam-cgfs (2.0.7-0ubuntu1~17.04.1) ...
Use of uninitialized value $reply in scalar chomp at /usr/share/perl5/Debconf/FrontEnd/Passthrough.pm line 66.

I'm going to mark this as affecting debconf, though the error message looks like a duplicate of a supposedly resolved bug. Can you please show the result of

dpkg -l | grep debconf
cat /etc/*-release

so we can check the versions?

[Marco (dolland)]

Hi,

Thank you for taking time to reply!!

Here's a screenshot.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Stéphane Graber (stgraber)]

We never had any other report of this so it's not a generic issue in libpam-cgfs, this suggests a debconf issue, so closing the lxcfs task.