CoreDNS segmentation fault after migration from ARMv8 to ARMv7

[lgoio]

Description

After migrating my Home Assistant setup from ARMv8 (Raspberry Pi 3) to ARMv7 (Odroid XU4), the DNS plugin (hassio_dns) failed. Running coredns -conf /etc/corefile inside the container resulted in a segmentation fault.

Steps to Reproduce:

• Migrate a Home Assistant setup from ARMv8 hardware (e.g., Raspberry Pi) to ARMv7 hardware (Odroid XU4).
• Execute the following commands:

docker exec -it hassio_dns /bin/sh
coredns --help # segmentation fault

Workaround

The issue was resolved by:

ha dns downgrade --version 2024.04.0
ha dns upgrade

After this, the DNS plugin (2024.12.0) worked as expected.

Suspected Cause

The segmentation fault appears to be specifically related to the coredns binary. Other programs within the hassio_dns container ran without any issues, suggesting that the problem is isolated to coredns. This indicates that the issue occurs during the distribution process of the coredns binary after it has been cross-compiled.

To address this, I recommend switching from the current cross-compilation and distribution process to a native installation of coredns using apk, such as:

apk add coredns

This approach could help ensure compatibility with the target architecture and prevent errors introduced during the distribution of the cross-compiled binary.

Environment

• Source Architecture: ARMv8 (Raspberry Pi)
• Target Architecture: ARMv7 (Odroid XU4)

Versions

• Core 2025.1.2
• Supervisor: 14.1
• OS: 2024.12.3
• Frontend: 20250109.0
• DNS: 2024.12.0