Exit code -11 Python

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I have a purely python ROS 2 Humble system. I don't rely on any C++ related features or packages in ROS.

One of my nodes under heavy load will slow, then sometimes completely crash and I'll get an error like:

process has died [pid 2239, exit code -11, cmd '/opt/backend-ros-ws/install/myproj/lib/myproj/my_node --ros-args'].

From other posts it seems this may be a seg fault, but I'm not sure where that segfault could be coming from. Perhaps something in the middleware layer? Does anyone know how I could debug?