I have verified the fix using openssh-server from kinetic-proposed:
root@jammy:~# grep "^ListenAddress" /etc/ssh/sshd_config
ListenAddress 0.0.0.0
ListenAddress ::
root@jammy:~# systemctl edit ssh.socket
root@jammy:~# cat /etc/systemd/system/ssh.socket.d/override.conf
[Unit]
Description=SRU verification
root@jammy:~# systemctl daemon-reload
root@jammy:~# systemctl status ssh.socket
○ ssh.socket - SRU verification
Loaded: loaded (/lib/systemd/system/ssh.socket; disabled; vendor preset:
enabled)
Drop-In: /etc/systemd/system/ssh.socket.d
└─override.conf
Active: inactive (dead)
Listen: [::]:22 (Stream)
Accepted: 0; Connected: 0;
root@jammy:~# vi /etc/apt/sources.list
root@jammy:~# cat /etc/apt/sources.list
# Generated by distrobuilder
deb http://archive.ubuntu.com/ubuntu kinetic main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu kinetic-updates main restricted universe
multiverse
deb http://security.ubuntu.com/ubuntu kinetic-security main restricted universe
multiverse
deb http://security.ubuntu.com/ubuntu kinetic-proposed main restricted universe
multiverse
root@jammy:~# apt update && apt dist-upgrade
[ ... ]
root@jammy:~# apt-cache policy openssh-server
openssh-server:
Installed: 1:9.0p1-1ubuntu7.1
Candidate: 1:9.0p1-1ubuntu7.1
Version table:
*** 1:9.0p1-1ubuntu7.1 500
500 http://security.ubuntu.com/ubuntu kinetic-proposed/main amd64
Packages
100 /var/lib/dpkg/status
1:9.0p1-1ubuntu7 500
500 http://archive.ubuntu.com/ubuntu kinetic/main amd64 Packages
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to openssh in Ubuntu.
https://bugs.launchpad.net/bugs/1995294
Title:
rmdir: failed to remove '/etc/systemd/system/ssh.socket.d': Directory
not empty
Status in openssh package in Ubuntu:
Triaged
Status in openssh source package in Kinetic:
Fix Committed
Bug description:
[Impact]
If a user a has an existing drop-in config for ssh.socket in
/etc/systemd/system/ssh.socket.d upgrades to kinetic, and openssh-
server.postint determines it should *not* perform migration to socket-
activated ssh, they will receive an error from dpkg:
Errors were encountered while processing:
openssh-server
Exception during pm.DoInstall(): E:Sub-process /usr/bin/dpkg returned an
error code (1)
Could not install the upgrades
The upgrade has aborted. Your system could be in an unusable state. A
recovery will run now (dpkg --configure -a).
Please report this bug in a browser at
http://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+filebug
and attach the files in /var/log/dist-upgrade/ to the bug report.
E:Sub-process /usr/bin/dpkg returned an error code (1)
Setting up openssh-server (1:9.0p1-1ubuntu7) ...
rmdir: failed to remove '/etc/systemd/system/ssh.socket.d': Directory not
empty
dpkg: error processing package openssh-server (--configure):
installed openssh-server package post-installation script subprocess
returned error exit status 1
Errors were encountered while processing:
openssh-server
[Test Plan]
* On a Jammy machine, install openssh-server if necessary. Edit
/etc/ssh/sshd_config to contain the following:
$ cat /etc/ssh/sshd_config
[... defaults everywhere else ...]
#Port 22
#AddressFamily any
ListenAddress 0.0.0.0
ListenAddress ::
[... defaults everywhere else ...]
* Create a trivial drop-in override for ssh.socket:
$ systemctl edit ssh.socket
$ cat /etc/systemd/system/ssh.socket.d/override.conf
[Unit]
Description=Testing
* Now perform an upgrade to Kinetic, and observe the dpkg error.
[Where problems could occur]
The solution should be to use rmdir's --ignore-fail-on-empty flag. If the
flag was mis-spelled, that would produce a new error.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1995294/+subscriptions
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