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Title: Double release of import lock in _PyImport_LoadLazyImportTstate on PySet_Add failure · Issue #150374 · python/cpython · GitHub

Open Graph Title: Double release of import lock in _PyImport_LoadLazyImportTstate on PySet_Add failure · Issue #150374 · python/cpython

X Title: Double release of import lock in _PyImport_LoadLazyImportTstate on PySet_Add failure · Issue #150374 · python/cpython

Description: Bug report Bug description: import.c：double lock release _PyImport_LoadLazyImportTstate (line 3931): _PyImport_ReleaseLock called before goto error, then error path releases again → Py_FatalError("unlocking a recursive mutex not owned by...

Open Graph Description: Bug report Bug description: import.c：double lock release _PyImport_LoadLazyImportTstate (line 3931): _PyImport_ReleaseLock called before goto error, then error path releases again → Py_FatalError("...

X Description: Bug report Bug description: import.c：double lock release _PyImport_LoadLazyImportTstate (line 3931): _PyImport_ReleaseLock called before goto error, then error path releases again → Py_FatalError(&...

Opengraph URL: https://github.com/python/cpython/issues/150374

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og:image:altBug report Bug description: import.c：double lock release _PyImport_LoadLazyImportTstate (line 3931): _PyImport_ReleaseLock called before goto error, then error path releases again → Py_FatalError("...
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Double release of import lock in _PyImport_LoadLazyImportTstate on PySet_Add failurehttps://github.com/python/cpython/issues/150374#top
type-bugAn unexpected behavior, bug, or errorhttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22type-bug%22
https://github.com/lpyu001
lpyu001https://github.com/lpyu001
on May 25, 2026https://github.com/python/cpython/issues/150374#issue-4515121642
#146102https://github.com/python/cpython/issues/146102
gist detailshttps://gist.github.com/devdanzin/432d9af1a8833bef53bc9ae342310622
gh-150374:Fix double release of import lock in lazy import reification #150376https://github.com/python/cpython/pull/150376
[3.15] gh-150374: Fix double release of import lock in lazy import reification (GH-150376) #150378https://github.com/python/cpython/pull/150378
type-bugAn unexpected behavior, bug, or errorhttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22type-bug%22
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