"Segmentation fault" when importing torch

[loicmagne]

Ubuntu 24.04, Python 3.12.3, torch 2.4.0+cu124
Simply having import torch in a test.py file, and using viztracer test.py gives me: Segmentation fault (core dumped)

[gaogaotiantian]

Ah, I knew I saw this somewhere. This was a bug in CPython (python/cpython#122029) and was actually fixed by myself.. 3.12.5+ should work.

[gaogaotiantian]

I agree segfault is probably not the way to go even if this is a bug of CPython, but we do have some assumptions in VizTracer (for example, a c_return always corresponds to a c_call, not a call), and if those assumptions are broken by CPython, we can't really figure out what's going on. So at this time, maybe just upgrade CPython?