[3.12] gh-119585: Fix crash involving PyGILState_Release() and PyThreadState_Clear() (GH-119753)
#119861
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…d `PyThreadState_Clear()` (pythonGH-119753) Make sure that `gilstate_counter` is not zero in when calling `PyThreadState_Clear()`. A destructor called from `PyThreadState_Clear()` may call back into `PyGILState_Ensure()` and `PyGILState_Release()`. If `gilstate_counter` is zero, it will try to create a new thread state before the current active thread state is destroyed, leading to an assertion failure or crash. (cherry picked from commit bcc1be3) Co-authored-by: Sam Gross <[email protected]>
This was referenced May 31, 2024
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Make sure that
gilstate_counteris not zero in when callingPyThreadState_Clear(). A destructor called fromPyThreadState_Clear()may call back intoPyGILState_Ensure()andPyGILState_Release(). Ifgilstate_counteris zero, it will try to create a new thread state before the current active thread state is destroyed, leading to an assertion failure or crash.(cherry picked from commit bcc1be3)