[issue45262] crash if asyncio is used before and after re-initialization if using python embedded in an application
Matthias Reichl
report at bugs.python.org
Thu Oct 7 09:37:57 EDT 2021
Matthias Reichl <hias at horus.com> added the comment:
We were hitting the same issue in kodi, which uses embedded sub-interpreters to run python addons, after one of the addons was switched to asyncio.
The immediate cause of the assertion failure is a use-after-free issue from the running loop holder cache:
When the running loop holder is deallocated (which happens eg on interpreter shutdown) cached_running_holder holds a dangling pointer.
A subsequent call to get_running_loop() may then pick that up and boom.
While probably not a full fix for this issue I think it would be good to fix the use-after-free problem - there could be other code paths that lead to this situation. I've created a github pull request for that
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<https://bugs.python.org/issue45262>
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