"Assertion `PyErr_ExceptionMatches(PyExc_OverflowError)' failed" if ethernet up

[twwn]

What version of protobuf and what language are you using?
Version: v2.73 as shipped by ArchLinux
Language: Python

What operating system (Linux, Windows, ...) and version?
ArchLinux

What runtime / compiler are you using (e.g., python version or gcc version)
Python 3.12.5
Kernel 6.10.4-zen
rustcc (nightly)
clang 18.1.8 / gcc 14.2.1

What did you do?
Anki (git version) is my sole user of the library.

I just start it.

What did you expect to see
Program starts.

What did you see instead?
Some unrelated startup lines and then on the console:

python: python/convert.c:91: PyUpb_GetUint64: Assertion `PyErr_ExceptionMatches(PyExc_OverflowError)' failed.
IOT instruction (core dumped) anki

Make sure you include information that can help us debug (full error message, exception listing, stack trace, logs).

This has been happening for maybe 2-3 months now. Previously it was fine.

But: This only occurs if my ethernet connection (Intel I225-V, module igc) is up.

If I rmmod igc, I can run Anki fine. Doesn't matter then if I modprobe the module again and bring the connection back up.

Often then I can close & start Anki a second time even with the interface up, but other times it fails again.

Dunno how to further debug.

[JasonLunn]

Hi @twwn -

I recommend refiling this issue with Anki https://github.com/ankitects/anki

The protobuf library doesn't do any networking (higher level libraries like gRPC use protobuf to do serialization on bytes from the wire), so the symptom you're describing that goes away if your network connection is down doesn't seem like it can be fixed by protobuf. More likely it is anki is getting into trouble while it's using protobuf.