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asyncio: MultiLoopWatcher has a race condition (test_asyncio: test_close_kill_running() hangs on AMD64 RHEL7 Refleaks 3.x) #82504

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@vstinner

Description

@vstinner
BPO 38323
Nosy @vstinner, @njsmith, @asvetlov, @cjerdonek, @1st1, @jstasiak, @pablogsal, @miss-islington, @aeros, @Fidget-Spinner, @shreyanavigyan
PRs
  • bpo-38323: Suppress the hang #18457
  • bpo-38323: Temporarily skip close_kill_running() for MultiLoopWatcher in test_asyncio #20013
  • [WIP] bpo-38323: Fix MultiLoopChildWatcher hangs #20142
  • bpo-38323: Add guard clauses in MultiLoopChildWatcher. #22756
  • [3.9] bpo-38323: Add guard clauses in MultiLoopChildWatcher. (GH-22756) #23806
  • [3.8] bpo-38323: Add guard clauses in MultiLoopChildWatcher. (GH-22756) #23807
  • bpo-38323, asyncio: Fix MultiLoopChildWatcher race condition #26536
  • bpo-38323: Remove test_cancel_make_subprocess_transport_exec as it has a rance condicion #26541
  • bpo-38323: Skip SubprocessMultiLoopWatcherTest as they can hang the test suite #26542
  • [3.9] bpo-38323: Skip SubprocessMultiLoopWatcherTest as they can hang the test suite (GH-26542) #26543
  • [3.10] bpo-38323: Skip SubprocessMultiLoopWatcherTest as they can hang the test suite (GH-26542) #26544
  • bpo-38323: Change MultiLoopChildWatcher to install handlers for all the event loops #26574
  • bpo-44368: Improve syntax errors with invalid as pattern targets #26632
  • [3.8] bpo-38323: Skip SubprocessMultiLoopWatcherTest as they can hang the test suite (GH-26542) #26670
  • Files
  • test-kill.py
  • test-kill2.py
  • test-kill3.py
  • 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 2019-09-30.12:57:35.040>
    labels = ['type-bug', 'tests', '3.9', 'expert-asyncio']
    title = 'asyncio: MultiLoopWatcher has a race condition (test_asyncio: test_close_kill_running() hangs on AMD64 RHEL7 Refleaks 3.x)'
    updated_at = <Date 2021-11-05.17:45:33.738>
    user = 'https://github.com/vstinner'

    bugs.python.org fields:

    activity = <Date 2021-11-05.17:45:33.738>
    actor = 'byllyfish'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Tests', 'asyncio']
    creation = <Date 2019-09-30.12:57:35.040>
    creator = 'vstinner'
    dependencies = []
    files = ['49144', '49145', '49150']
    hgrepos = []
    issue_num = 38323
    keywords = ['patch']
    message_count = 49.0
    messages = ['353568', '354079', '355150', '355157', '355159', '355362', '355363', '359909', '359910', '359928', '360975', '361576', '361691', '361801', '368061', '368183', '368280', '368467', '368468', '368501', '368511', '368514', '368516', '368532', '368544', '368549', '368561', '368563', '368564', '368699', '368725', '369086', '380420', '383194', '383197', '383199', '395090', '395113', '395119', '395126', '395138', '395139', '395142', '395143', '395376', '395693', '395718', '396684', '405813']
    nosy_count = 12.0
    nosy_names = ['vstinner', 'njs', 'asvetlov', 'chris.jerdonek', 'yselivanov', 'jstasiak', 'pablogsal', 'miss-islington', 'aeros', 'kj', 'shreyanavigyan', 'byllyfish']
    pr_nums = ['18457', '20013', '20142', '22756', '23806', '23807', '26536', '26541', '26542', '26543', '26544', '26574', '26632', '26670']
    priority = 'normal'
    resolution = None
    stage = 'patch review'
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue38323'
    versions = ['Python 3.9']

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      3.9only security fixestestsTests in the Lib/test dirtopic-asynciotype-bugAn unexpected behavior, bug, or error

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