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Author vstinner
Recipients koobs, lukasz.langa, pablogsal, pitrou, scotchka, vstinner
Date 2019-03-04.11:30:12
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <1551699012.65.0.964316273567.issue36114@roundup.psfhosted.org>
In-reply-to
Content 
Sometimes, I can reproduce the crash using:
./python -m test --matchfile=bisect5 test_multiprocessing_spawn --fail-env-changed -F

Using this file:

test.test_multiprocessing_spawn.WithThreadsTestQueue.test_timeout
test.test_multiprocessing_spawn.WithProcessesTestBarrier.test_default_timeout
test.test_multiprocessing_spawn.WithThreadsTestManagerRestart.test_rapid_restart
test.test_multiprocessing_spawn.WithProcessesTestPool.test_release_task_refs
test.test_multiprocessing_spawn.WithManagerTestLock.test_rlock

It seems like the following test is enough to creates a coredump:

test.test_multiprocessing_spawn.WithThreadsTestManagerRestart.test_rapid_restart

Problem: it's really hard to write a *reliable* script/method to trigger the crash. This race condition is very well hidden!
History
Date User Action Args
2019-03-04 11:30:12vstinnersetrecipients: + vstinner, pitrou, lukasz.langa, koobs, pablogsal, scotchka
2019-03-04 11:30:12vstinnersetmessageid: <1551699012.65.0.964316273567.issue36114@roundup.psfhosted.org>
2019-03-04 11:30:12vstinnerlinkissue36114 messages
2019-03-04 11:30:12vstinnercreate