Bug#1024080: systemd --user and sd-pam processes keep running after logout (again)

[Michael Biebl]

On Sun, 06 Nov 2022 14:37:39 +0100 =?utf-8?q?Patrick_H=C3=A4cker?= 
<pat_h at web.de> wrote:
> Package: systemd
> Version: 252-2
> Severity: normal
> 
> Dear Maintainer,
> 
> similar to #749268 there seems to be again the problem, that when logging
> out, the systemd user process and sd-pam are not killed.
> 
> Take, e.g., this example:
> # loginctl kill-session 34
> 
> # pgrep -a -u pat
> 11499 /lib/systemd/systemd --user
> 11500 (sd-pam)
> 
> # loginctl list-sessions
> SESSION UID USER SEAT  TTY
>      13   0 root seat0 tty2
>      21   0 root seat0 tty2
>      25   0 root seat0 tty2
>      33   0 root seat0 tty2
>      36   0 root seat0 tty2
>      37 121 sddm seat0
> 
> 6 sessions listed.
> 
> So although there is no logind session left, there are still the two user
> processes around.
> 
> I added
> KillUserProcesses=yes
> but that did not help (is this an additional bug?).
> 
> Do I miss anything in order to kill the systemd user process automatically?
> 

It looks like
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1023545
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1024080
might be duplicates.

If you think this is a regression in 252 and you can provide a way how 
this can be reproduced, my advice would be to file this upstream at

https://github.com/systemd/systemd/issues/

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