RViz2 intermittent segfault on shutdown when using run_rviz.sh

[LuisPovedaCano]

Tested in Ubuntu 22.04
Python 3.11.14
In the branch luis/update_ros_example

Steps to reproduce:

1. Run CARLA with make launch ARGS="--ros2 --editor-flags='--ros2'"
2. Start the simulation
3. Open a new terminal and go to PythonAPI/examples/ros2
4. Run the RViz example: ./run_rviz.sh
5. Close RViz

Expected behavior: Clean shutdown with no errors.

Observed behavior: Intermittently, after closing RViz, a segmentation fault is logged:

  [ros2run]: Segmentation fault

Notes:

• Does not happen on every run
• This segmentation fault can be triggered with any combination of --distro and --rmw
• The crash happens during RViz2 shutdown.
• It does not affect the simulation.

[JArmandoAnaya]

Hello, do you know if this is not happening with the current Carla release? I made some refactoring and added many tests, which helped reduce the issue, but it is still happening intermittently. It is difficult to debug. I want to be sure that this problem is not caused by the RViz running in Docker.

[LuisPovedaCano]

Fixed in #9681