systemd-logind does not reconnect to dbus after restarting dbus

What were you trying to do that didn't work?

Deploying OpenStack RDO on CentOS Stream 9. As part of the deployment process, dbus is restarted at some point. Since then, services using pam as sudo or ssh takes long time, 2 minutes, which is the timeout with dbus.

Please provide the package NVR for which bug is seen:

systemd-252-21.el9.x86_64

How reproducible:

Always after restarting dbus with:

$ sudo systemctl restart dbus

Steps to reproduce

1. In a CS9 system with the mentioned version of systemd restart dbus:

$ sudo systemctl restart dbus

2.  Try any command using sudo:

$ sudo ps

You can see that systemd-logind is not reconnected using "busctl list" command

Expected results

sudo or ssh should work fine after restarting dbus. Note that the same exact procedure worked fine with the same exact procedure.

[cloud-user@amoralej-issue-dbus ~]$ rpm -q systemd
systemd-252-18.el9.x86_64
[cloud-user@amoralej-issue-dbus ~]$ busctl list|grep logind
:1.5                                       1371 systemd-logind  root       :1.5          systemd-logind.service -       -
org.freedesktop.login1                     1371 systemd-logind  root       :1.5          systemd-logind.service -       -
[cloud-user@amoralej-issue-dbus ~]$ sudo systemctl restart dbus
[cloud-user@amoralej-issue-dbus ~]$ busctl list|grep logind
:1.3                                       1484 systemd-logind  root       :1.3          systemd-logind.service            -       -
org.freedesktop.login1                     1484 systemd-logind  root       :1.3          systemd-logind.service            -       -
[cloud-user@amoralej-issue-dbus ~]$ time ps
    PID TTY          TIME CMD
   1289 pts/0    00:00:00 bash
   1539 pts/0    00:00:00 ps

real    0m0.008s
user    0m0.001s
sys    0m0.007s
[cloud-user@amoralej-issue-dbus ~]$ 

Actual results

[cloud-user@amoralej-issue-dbus ~]$ rpm -q systemd
systemd-252-21.el9.x86_64
[cloud-user@amoralej-issue-dbus ~]$ busctl list|grep logind
:1.2                                        719 systemd-logind  root       :1.2          systemd-logind.service    -       -
org.freedesktop.login1                      719 systemd-logind  root       :1.2          systemd-logind.service    -       -
[cloud-user@amoralej-issue-dbus ~]$ sudo systemctl restart dbus
[cloud-user@amoralej-issue-dbus ~]$ busctl list|grep logind
[cloud-user@amoralej-issue-dbus ~]$ time sudo ps

    PID TTY          TIME CMD
   1385 pts/0    00:00:00 sudo
   1393 pts/0    00:00:00 ps

real    2m0.125s
user    0m0.006s
sys    0m0.014s
[cloud-user@amoralej-issue-dbus ~]$