[3.13] gh-117657: Fix QSBR race condition (GH-118843) #118905
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`_Py_qsbr_unregister` is called when the PyThreadState is already detached, so the access to `tstate->qsbr` isn't safe without locking the shared mutex. Grab the `struct _qsbr_shared` from the interpreter instead. (cherry picked from commit 33d2019) Co-authored-by: Alex Turner <[email protected]>
This was referenced May 10, 2024
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_Py_qsbr_unregisteris called when the PyThreadState is alreadydetached, so the access to
tstate->qsbrisn't safe without locking theshared mutex. Grab the
struct _qsbr_sharedfrom the interpreterinstead.
(cherry picked from commit 33d2019)
Co-authored-by: Alex Turner [email protected]