Como desinstalar um pacote de backports Debian (não um Q duplicado)

Eu sei que há algumas perguntas aqui que fazem a mesma pergunta que pareço estar fazendo. Eu tentei essas sugestões 1 e 2 , mas elas não funcionam neste caso. Aqui está o que aconteceu:

pi@raspberrypi0w:~ $ sudo apt -t bullseye-backports install udev
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  libudev1
The following packages will be upgraded:
  libudev1 udev
2 upgraded, 0 newly installed, 0 to remove and 35 not upgraded.
Need to get 1,654 kB of archives.
After this operation, 511 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://deb.debian.org/debian bullseye-backports/main armhf udev armhf 252.5-2~bpo11+1 [1,554 kB]
Get:2 http://deb.debian.org/debian bullseye-backports/main armhf libudev1 armhf 252.5-2~bpo11+1 [100 kB]
Fetched 1,654 kB in 1s (1,267 kB/s)
Reading changelogs... Done
(Reading database ... 43648 files and directories currently installed.)
Preparing to unpack .../udev_252.5-2~bpo11+1_armhf.deb ...
Unpacking udev (252.5-2~bpo11+1) over (247.3-7+rpi1+deb11u2) ...
Preparing to unpack .../libudev1_252.5-2~bpo11+1_armhf.deb ...
Unpacking libudev1:armhf (252.5-2~bpo11+1) over (247.3-7+rpi1+deb11u2) ...
Setting up libudev1:armhf (252.5-2~bpo11+1) ...
Setting up udev (252.5-2~bpo11+1) ...
Segmentation fault
Job for systemd-udevd.service failed because a fatal signal was delivered to the control process.
See "systemctl status systemd-udevd.service" and "journalctl -xe" for details.
invoke-rc.d: initscript udev, action "restart" failed.
● systemd-udevd.service - Rule-based Manager for Device Events and Files
     Loaded: loaded (/lib/systemd/system/systemd-udevd.service; static)
     Active: activating (start) since Tue 2024-04-09 07:36:27 UTC; 130ms ago
TriggeredBy: ● systemd-udevd-control.socket
             ● systemd-udevd-kernel.socket
       Docs: man:systemd-udevd.service(8)
             man:udev(7)
   Main PID: 8773 ((md-udevd))
      Tasks: 1
        CPU: 45ms
     CGroup: /system.slice/systemd-udevd.service
             └─8773 (md-udevd)

Apr 09 07:36:28 raspberrypi0w systemd[1]: Stopped Rule-based Manager for Device Events and Files.
Apr 09 07:36:28 raspberrypi0w systemd[1]: Starting Rule-based Manager for Device Events and Files...
Apr 09 07:36:28 raspberrypi0w systemd[1]: systemd-udevd.service: Main process exited, code=killed, status=11/SEGV
Apr 09 07:36:28 raspberrypi0w systemd[1]: systemd-udevd.service: Failed with result 'signal'.
Apr 09 07:36:28 raspberrypi0w systemd[1]: Failed to start Rule-based Manager for Device Events and Files.
Apr 09 07:36:28 raspberrypi0w systemd[1]: systemd-udevd.service: Scheduled restart job, restart counter is at 5.
Apr 09 07:36:28 raspberrypi0w systemd[1]: Stopped Rule-based Manager for Device Events and Files.
Apr 09 07:36:28 raspberrypi0w systemd[1]: systemd-udevd.service: Start request repeated too quickly.
Apr 09 07:36:28 raspberrypi0w systemd[1]: systemd-udevd.service: Failed with result 'signal'.
Apr 09 07:36:28 raspberrypi0w systemd[1]: Failed to start Rule-based Manager for Device Events and Files.
dpkg: error processing package udev (--configure):
 installed udev package post-installation script subprocess returned error exit status 1
Processing triggers for libc-bin (2.31-13+rpt2+rpi1+deb11u8) ...
Processing triggers for man-db (2.9.4-2) ...
Processing triggers for initramfs-tools (0.140) ...
Errors were encountered while processing:
 udev
E: Sub-process /usr/bin/dpkg returned an error code (1)

A tentativa de “reversão” não foi muito interessante:

pi@raspberrypi0w:~ $ apt install ${udev}/bullseye
Illegal instruction

Tentei algumas outras "reversões":

pi@raspberrypi0w:~ $ sudo apt install udev
Illegal instruction
pi@raspberrypi0w:~ $ sudo apt-get install udev/stable
Illegal instruction
pi@raspberrypi0w:~ $ sudo apt-get install udev/old-stable
Illegal instruction

Uma 'falha de segmentação' - parece grave :). Eu não tinha certeza do que isso significava; ou seja, o sistema rejeitou automaticamente a udevatualização e reverteu automaticamente? - ou eu pisei nisso? Esperei alguns minutos e tentei isto:

$ systemctl status systemd-udevd.service
● systemd-udevd.service - Rule-based Manager for Device Events and Files
     Loaded: loaded (/lib/systemd/system/systemd-udevd.service; static)
     Active: failed (Result: signal) since Tue 2024-04-09 07:36:28 UTC; 28min ago
TriggeredBy: ● systemd-udevd-control.socket
             ● systemd-udevd-kernel.socket
       Docs: man:systemd-udevd.service(8)
             man:udev(7)
    Process: 8776 ExecStart=/lib/systemd/systemd-udevd (code=killed, signal=SEGV)
   Main PID: 8776 (code=killed, signal=SEGV)
        CPU: 199ms

Apr 09 07:36:28 raspberrypi0w systemd[1]: systemd-udevd.service: Scheduled restart job, restart counter is at 5.
Apr 09 07:36:28 raspberrypi0w systemd[1]: Stopped Rule-based Manager for Device Events and Files.
Apr 09 07:36:28 raspberrypi0w systemd[1]: systemd-udevd.service: Start request repeated too quickly.
Apr 09 07:36:28 raspberrypi0w systemd[1]: systemd-udevd.service: Failed with result 'signal'.
Apr 09 07:36:28 raspberrypi0w systemd[1]: Failed to start Rule-based Manager for Device Events and Files.

Eu tenho um bom backup (de imagem) da noite passada, então, se eu matar meu sistema operacional, posso me recuperar. No entanto, prefiro corrigir isso sem recorrer ao backup - se for possível.

O que devo fazer?