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gh-114763: Protect lazy loading modules from attribute access race #114781

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Merged
brettcannon merged 12 commits into from
Feb 24, 2024
+94 −32
Merged

gh-114763: Protect lazy loading modules from attribute access race #114781

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d57f4eb
gh-114763: Protect lazy loading modules from attribute access race
effigies Jan 31, 2024
3db717c
TEST: Reproduce gh-114763
effigies Jan 31, 2024
5424d0c
Add new blurb
effigies Jan 31, 2024
96c08c5
Improve comments around the branching
effigies Feb 1, 2024
3642ddc
TEST: Use TestCase.assert* methods
effigies Feb 1, 2024
46238e5
Merge branch 'main' into fix-issue-114763
brettcannon Feb 6, 2024
6accf0c
Apply suggestions from code review
effigies Feb 17, 2024
bb2292f
TEST: Require working threading for test_module_load_race
effigies Feb 17, 2024
57fe084
Move threading import to module level of importlib.util
effigies Feb 17, 2024
40383a0
Make is_loading a bool instead of Event
effigies Feb 17, 2024
6322dd6
Merge branch 'main' into fix-issue-114763
effigies Feb 23, 2024
023d65d
Merge branch 'main' into fix-issue-114763
brettcannon Feb 23, 2024
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Move threading import to module level of importlib.util
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@effigies
effigies committed Feb 17, 2024
commit 57fe084717a74ae5bb861385ce2ebfbe318720aa
3 changes: 1 addition & 2 deletions Lib/importlib/util.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@

import _imp
import sys
import threading
import types


Expand Down Expand Up @@ -253,8 +254,6 @@ def create_module(self, spec):

def exec_module(self, module):
"""Make the module load lazily."""
import threading

module.__spec__.loader = self.loader
module.__loader__ = self.loader
# Don't need to worry about deep-copying as trying to set an attribute
Expand Down