[issue39932] test_multiprocessing_fork leaked [0, 2, 0] file descriptors on aarch64 RHEL8 Refleaks 3.7 buildbot

[STINNER Victor]

Change by STINNER Victor :


--
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue39932] test_multiprocessing_fork leaked [0, 2, 0] file descriptors on aarch64 RHEL8 Refleaks 3.7 buildbot

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 857d573257ab150d6bea666354312a5fd284b171 by Victor Stinner in 
branch '3.7':
bpo-39932: Fix multiprocessing test_heap() (GH-19690)
https://github.com/python/cpython/commit/857d573257ab150d6bea666354312a5fd284b171


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[issue39932] test_multiprocessing_fork leaked [0, 2, 0] file descriptors on aarch64 RHEL8 Refleaks 3.7 buildbot

[STINNER Victor]

Change by STINNER Victor :


--
keywords: +patch
pull_requests: +19010
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/19690

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[issue39932] test_multiprocessing_fork leaked [0, 2, 0] file descriptors on aarch64 RHEL8 Refleaks 3.7 buildbot

[STINNER Victor]

STINNER Victor  added the comment:

The following command fails randomly:

$ ./python -m test test_multiprocessing_fork -R 3:3 -m 
test.test_multiprocessing_fork.WithProcessesTestHeap.test_heap -v

Run 1:

test_multiprocessing_fork leaked [73, 52, 33] references, sum=158
test_multiprocessing_fork leaked [31, 23, 14] memory blocks, sum=68
test_multiprocessing_fork leaked [2, 0, 0] file descriptors, sum=2
test_multiprocessing_fork failed

Run 2:

1 test OK.

Run 6:

test_multiprocessing_fork leaked [0, 2, 0] file descriptors, sum=2
test_multiprocessing_fork failed

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[issue39932] test_multiprocessing_fork leaked [0, 2, 0] file descriptors on aarch64 RHEL8 Refleaks 3.7 buildbot

[STINNER Victor]

STINNER Victor  added the comment:

On aarch64 RHEL8 Refleaks 3.7, I managed to reproduce the issue with a single 
test:

./python -m test test_multiprocessing_fork -R 3:3 -m 
test.test_multiprocessing_fork.WithProcessesTestHeap.test_heap -v

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[issue39932] test_multiprocessing_fork leaked [0, 2, 0] file descriptors on aarch64 RHEL8 Refleaks 3.7 buildbot

[STINNER Victor]

STINNER Victor  added the comment:

Bug seen on Pytho 3.7 branch, on Fedora Stable, RHEL7 and RHEL8, on different 
architectures.

aarch64 RHEL7 Refleaks 3.7:
https://buildbot.python.org/all/#builders/598/builds/22

PPC64LE RHEL7 Refleaks 3.7:
https://buildbot.python.org/all/#builders/414/builds/32

PPC64LE Fedora Stable Refleaks 3.7:
https://buildbot.python.org/all/#/builders/388/builds/31

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[issue39932] test_multiprocessing_fork leaked [0, 2, 0] file descriptors on aarch64 RHEL8 Refleaks 3.7 buildbot

[STINNER Victor]

STINNER Victor  added the comment:

Another example on PPC64LE RHEL8 Refleaks 3.7:
https://buildbot.python.org/all/#/builders/431/builds/29

Warning -- Dangling processes: {}
Warning -- Dangling processes: {}

test_multiprocessing_spawn leaked [0, 2, 0] file descriptors, sum=2

Re-running test_multiprocessing_forkserver in verbose mode

test_multiprocessing_forkserver leaked [2, 0, 0] file descriptors, sum=2

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[issue39932] test_multiprocessing_fork leaked [0, 2, 0] file descriptors on aarch64 RHEL8 Refleaks 3.7 buildbot

[STINNER Victor]

New submission from STINNER Victor :

aarch64 RHEL8 Refleaks 3.7:
https://buildbot.python.org/all/#/builders/620/builds/20

test_multiprocessing_fork leaked [0, 2, 0] file descriptors, sum=2

0:40:22 load avg: 0.93 Re-running failed tests in verbose mode
0:40:22 load avg: 0.93 Re-running test_multiprocessing_fork in verbose mode
test_multiprocessing_fork leaked [2, 0, 0] file descriptors, sum=2

--
components: Tests
messages: 363909
nosy: vstinner
priority: normal
severity: normal
status: open
title: test_multiprocessing_fork leaked [0, 2, 0] file descriptors on aarch64 
RHEL8 Refleaks 3.7 buildbot
versions: Python 3.7

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