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Title: gh-151593: Avoid deadlock in insert_split_key(). by nascheme · Pull Request #152133 · python/cpython · GitHub

Open Graph Title: gh-151593: Avoid deadlock in insert_split_key(). by nascheme · Pull Request #152133 · python/cpython

X Title: gh-151593: Avoid deadlock in insert_split_key(). by nascheme · Pull Request #152133 · python/cpython

Description: The Python programming language. Contribute to python/cpython development by creating an account on GitHub.

Open Graph Description: We must not acquire other locks while holding the LOCK_KEYS() mutex. This issue is fixed by calling PyType_Modifed() after releasing the mutex. Note: this PR was assisted by Claude Opus 4.8. Iss...

X Description: We must not acquire other locks while holding the LOCK_KEYS() mutex. This issue is fixed by calling PyType_Modifed() after releasing the mutex. Note: this PR was assisted by Claude Opus 4.8. Iss...

Opengraph URL: https://github.com/python/cpython/pull/152133

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og:image:altWe must not acquire other locks while holding the LOCK_KEYS() mutex. This issue is fixed by calling PyType_Modifed() after releasing the mutex. Note: this PR was assisted by Claude Opus 4.8. Iss...
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Jun 24, 2026https://github.com/python/cpython/pull/152133#issue-4739101543
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test_abc hangs on TSan Parallel Test on Free Threading #151593https://github.com/python/cpython/issues/151593
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: Avoid deadlock in insert_split_key().https://github.com/python/cpython/pull/152133/commits/30df3b9682a10f87257f33d1993ef477aa39c923
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