2 bash zombie processes after starting Home Assistant OS on RaspberryPi 3 64bit

[ajbathe]

Describe the issue you are experiencing

When I start Home Assistant OS, I see two zombie processes which can't get killed:

# ps aux | grep Z
USER         PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root        2831  0.0  0.0      0     0 ?        Z    11:14   0:00 [bash] <defunct>
root        2905  0.0  0.0      0     0 ?        Z    11:14   0:00 [bash] <defunct>

content of /etc/os-release is:

# cat /etc/os-release 
NAME="Home Assistant OS"
VERSION="14.0 (RaspberryPi 3 64bit)"
ID=haos
VERSION_ID=14.0
PRETTY_NAME="Home Assistant OS 14.0"
CPE_NAME=cpe:2.3:o:home-assistant:haos:14.0:*:production:*:*:*:rpi3-64:*
HOME_URL=https://hass.io/
VARIANT="Home Assistant OS RaspberryPi 3 64bit"
VARIANT_ID=rpi3-64
SUPERVISOR_MACHINE=raspberrypi3-64
SUPERVISOR_ARCH=aarch64

Please see also home-assistant/core#132924 (comment)
I was adviced to report that issue here.

ajb

What operating system image do you use?

rpi3-64 (Raspberry Pi 3 64-bit OS)

What version of Home Assistant Operating System is installed?

6.6.51

Did the problem occur after upgrading the Operating System?

No

Hardware details

Machine model: Raspberry Pi 3 Model B Plus Rev 1.3

Steps to reproduce the issue

1. Boot system
2. Secure Shell login to machine with USB stick allowing it
3. watch processes with "ps" command
   ...

Anything in the Supervisor logs that might be useful for us?

nope

Anything in the Host logs that might be useful for us?

nope

System information

Version core-2024.12.2
Installationstyp Home Assistant OS
Entwicklung false
Supervisor true
Docker true
Benutzer root
Virtuelle Umgebung false
Python-Version 3.13.0
Betriebssystemfamilie Linux
Betriebssystem-Version 6.6.51-haos-raspi
CPU-Architektur aarch64
Zeitzone Europe/Berlin
Konfigurationsverzeichnis /config
Home Assistant Cloud
Angemeldet false
Zertifikatsserver erreichbar ok
Authentifizierungsserver erreichbar ok
Home Assistant Cloud erreichbar ok
Home Assistant Supervisor
Host-Betriebssystem Home Assistant OS 14.0
Update-Channel stable
Supervisor-Version supervisor-2024.11.4
Agent-Version 1.6.0
Docker-Version 27.2.0
Speicherplatz gesamt 57.9 GB
Speicherplatz genutzt 4.8 GB
Gesund true
Unterstützt true
host_connectivity true
supervisor_connectivity true
ntp_synchronized true
virtualization
Board rpi3-64
Supervisor-API ok
Versions-API ok

Additional information

No response

[sairon]

This doesn't fit here, there is no bash binary in HAOS. The processes are almost surely running in a container of some of the add-ons. You can for example use pstree -p and look up the PID of the zombie process, then you should be able to identify what add-on it might be from the neighboring processes.