"RuntimeError: release unlocked lock" when starting a thread
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stdlib
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Description
| BPO | 34486 |
|---|---|
| Nosy | @pitrou, @vstinner, @serhiy-storchaka, @zhangyangyu, @skonieczny, @hongweipeng, @maggyero, @vladima |
| Files |
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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GitHub fields:
assignee = None
closed_at = None
created_at = <Date 2018-08-24.14:02:35.204>
labels = ['library']
title = '"RuntimeError: release unlocked lock" when starting a thread'
updated_at = <Date 2022-02-03.17:42:54.731>
user = 'https://github.com/skonieczny'
bugs.python.org fields:
activity = <Date 2022-02-03.17:42:54.731>
actor = 'maggyero'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2018-08-24.14:02:35.204>
creator = 'uosiu'
dependencies = []
files = ['47761', '47762', '47765']
hgrepos = []
issue_num = 34486
keywords = []
message_count = 10.0
messages = ['323998', '323999', '324170', '324490', '324655', '324785', '324891', '324893', '324896', '336070']
nosy_count = 9.0
nosy_names = ['pitrou', 'vstinner', 'serhiy.storchaka', 'xiang.zhang', 'uosiu', 'hongweipeng', 'maggyero', 'v2m', 'radek_kujawa']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue34486'
versions = ['Python 3.6']
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by running test.sh with the reproducer in start_threads.py, then compare its behavior with cond_race.py. Trace the reported unlocked-lock failure through Python's threading behavior and define completion as a reliable reproduction followed by a regression test that no longer raises the RuntimeError.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 32/100