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| author | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2024-05-29 19:47:47 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-05-29 19:47:47 (GMT) |
| commit | dcfbd3be9f1e0ba7aa32214e8f5f7f2ea4375a28 (patch) | |
| tree | c18442ddd58bc4e2b883e7a52343be4abb55f47c /PC | |
| parent | 40a024c9835cddd85f14bab4b1e8f6545a621208 (diff) | |
| download | cpython-dcfbd3be9f1e0ba7aa32214e8f5f7f2ea4375a28.zip cpython-dcfbd3be9f1e0ba7aa32214e8f5f7f2ea4375a28.tar.gz cpython-dcfbd3be9f1e0ba7aa32214e8f5f7f2ea4375a28.tar.bz2 | |
[3.13] gh-119525: Fix deadlock with `_PyType_Lookup` and the GIL (GH-119527) (#119746)
The deadlock only affected the free-threaded build and only occurred
when the GIL was enabled at runtime. The `Py_DECREF(old_name)` call
might temporarily release the GIL while holding the type seqlock.
Another thread may spin trying to acquire the seqlock while holding the
GIL.
The deadlock occurred roughly 1 in ~1,000 runs of `pool_in_threads.py`
from `test_multiprocessing_pool_circular_import`.
(cherry picked from commit c22323cd1c200ca1b22c47af95f67c4b2d661fe7)
Co-authored-by: Sam Gross <colesbury@gmail.com>
Diffstat (limited to 'PC')
0 files changed, 0 insertions, 0 deletions