systemd.crash_shell runs in tandem with serial-getty@ttyS0 causing issues

[DaanDeMeyer]

systemd version the issue has been seen with

main

Used distribution

Fedora 39

Linux kernel version used

No response

CPU architectures issue was seen on

None

Component

No response

Expected behaviour you didn't see

When PID 1 crashes and systemd.crash_shell is enabled, the spawned terminal takes control of the /dev/console TTY.

Unexpected behaviour you saw

When PID 1 crashes and systemd.crash_shell is enabled, both the spawned crash shell and serial-getty@ttyS0 are reading from /dev/console, leading to an unusable terminal as both try to read from it when characters are entered.

Steps to reproduce the problem

mkosi -f qemu
kill -s ABRT 1

Additional program output to the terminal or log subsystem illustrating the issue

No response