8000 Calling `_imp.is_lazy_imports_enabled` in a thread hits an `assert(0)` · Issue #147 · facebookincubator/cinder · GitHub
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Calling _imp.is_lazy_imports_enabled in a thread hits an assert(0) #147

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devdanzin opened this issue Dec 5, 2024 · 0 comments
Open

Calling _imp.is_lazy_imports_enabled in a thread hits an assert(0) #147

devdanzin opened this issue Dec 5, 2024 · 0 comments

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@devdanzin
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It's possible to hit an assert(0) in PyImport_IsLazyImportsEnabled by calling _imp.is_lazy_imports_enabled in a thread:

from threading import Thread
import _imp

Thread(target=_imp.is_lazy_imports_enabled, args=()).start()

Abort message:

python: Python/import.c:4640: PyImport_IsLazyImportsEnabled: Assertion `0' failed.
Aborted

I'm not sure this is relevant, but since it's the only fuzzing hit that happened in Cinder but not CPython, thought it better to report.

python -VV:

Python 3.12.4+meta (heads/meta/3.12:55b50e149d4, Dec  3 2024, 21:56:02) [GCC 11.4.0]

Found using fusil by @vstinner.
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