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test_eintr: test_open() hangs randomly on x86-64 El Capitan 3.x buildbot #79544

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test_eintr: test_open() hangs randomly on x86-64 El Capitan 3.x buildbot#79544
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3.8 (EOL)end of lifetestsTests in the Lib/test dir

Description

@vstinner
vstinner
opened on Nov 30, 2018
BPO 35363
Nosy @vstinner, @pablogsal, @miss-islington
PRs
  • bpo-35363: test_eintr: skip test_open() on macOS #10896
  • [3.7] bpo-35363, test_eintr: skip test_open() on macOS (GH-10896) #10898
  • [3.6] bpo-35363, test_eintr: skip test_open() on macOS (GH-10896) #10899
  • [3.7] bpo-35363, test_eintr: skip test_open() on macOS (GH-10896) #10911
  • [3.6] bpo-35363, test_eintr: skip test_open() on macOS (GH-10896) #10912
  • bpo-35363: test_eintr runs eintr_tester.py in verbose mode #10965
  • [3.7] bpo-35363: test_eintr runs eintr_tester.py in verbose mode (GH-10965) #10966
  • [3.6] bpo-35363: test_eintr runs eintr_tester.py in verbose mode (GH-10965) #10967
  • bpo-35363: test_eintr uses print(flush=True) #10990
  • [3.7] bpo-35363: test_eintr uses print(flush=True) (GH-10990) #10992
  • [3.6] bpo-35363: test_eintr uses print(flush=True) (GH-10990) #10993
    		•

    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 = <Date 2018-12-05.02:04:14.097>
created_at = <Date 2018-11-30.15:54:17.027>
labels = ['3.8', 'tests']
title = 'test_eintr: test_open() hangs randomly on x86-64 El Capitan 3.x buildbot'
updated_at = <Date 2019-05-21.22:34:15.897>
user = 'https://github.com/vstinner'

    bugs.python.org fields:

    activity = <Date 2019-05-21.22:34:15.897>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2018-12-05.02:04:14.097>
closer = 'vstinner'
components = ['Tests']
creation = <Date 2018-11-30.15:54:17.027>
creator = 'vstinner'
dependencies = []
files = []
hgrepos = []
issue_num = 35363
keywords = ['patch']
message_count = 14.0
messages = ['330795', '330796', '330801', '331055', '331059', '331088', '331089', '331192', '331193', '331194', '331234', '331235', '331236', '331237']
nosy_count = 3.0
nosy_names = ['vstinner', 'pablogsal', 'miss-islington']
pr_nums = ['10896', '10898', '10899', '10911', '10912', '10965', '10966', '10967', '10990', '10992', '10993']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue35363'
versions = ['Python 3.8']

    Activity

    1. vstinner commented on Nov 30, 2018

      @vstinner
      vstinner
      on Nov 30, 2018
      MemberAuthor

      test_open() of test_eintr hangs randomly on x86-64 El Capitan 3.x buildbot. test_eintr failed but then passed when run again.

      pythoninfo:

      platform.platform: Darwin-15.6.0-x86_64-i386-64bit # macOS 10.11 (El Capitan)

      https://buildbot.python.org/all/#/builders/93/builds/1574

      test_all (test.test_eintr.EINTRTests) ... FAIL

      ======================================================================
      FAIL: test_all (test.test_eintr.EINTRTests)
      ----------------------------------------------------------------------

      Traceback (most recent call last):
  File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/test/test_eintr.py", line 18, in test_all
    script_helper.assert_python_ok("-u", tester)
  File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/test/support/script_helper.py", line 157, in assert_python_ok
    return _assert_python(True, *args, **env_vars)
  File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/test/support/script_helper.py", line 143, in _assert_python
    res.fail(cmd_line)
  File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/test/support/script_helper.py", line 70, in fail
    raise AssertionError("Process return code is %d\n"
AssertionError: Process return code is 1
command line: ['/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/python.exe', '-X', 'faulthandler', '-I', '-u', '/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/test/eintrdata/eintr_tester.py']

      stdout:
      ---

      ---

      stderr:
      ---
      ........ss.s.ss.Timeout (0:10:00)!
      Thread 0x00007fff7c082000 (most recent call first):
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/test/eintrdata/eintr_tester.py", line 349 in python_open
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/test/eintrdata/eintr_tester.py", line 345 in _test_open
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/test/support/init.py", line 596 in wrapper
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/test/eintrdata/eintr_tester.py", line 353 in test_open
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/unittest/case.py", line 642 in run
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/unittest/case.py", line 702 in __call__
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/unittest/suite.py", line 122 in run
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/unittest/suite.py", line 84 in __call__
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/unittest/suite.py", line 122 in run
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/unittest/suite.py", line 84 in __call__
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/unittest/runner.py", line 176 in run
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/unittest/main.py", line 271 in runTests
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/unittest/main.py", line 101 in __init__
      File "/Users/buildbot/buildarea/3.x.billenstein-elcapitan/build/Lib/test/eintrdata/eintr_tester.py", line 527 in <module>
      ---

      ----------------------------------------------------------------------

      Ran 1 test in 605.488s

      FAILED (failures=1)
      Warning -- files was modified by test_eintr
      Before: []
      After: ['@test_57532_tmp']
      test test_eintr failed

    2. vstinner
      added
      3.8 (EOL)end of life
      testsTests in the Lib/test dir
      on Nov 30, 2018

    3. vstinner commented on Nov 30, 2018

      @vstinner
      vstinner
      on Nov 30, 2018
      MemberAuthor

      I'm unable to reproduce the bug on macOS 10.13.6 using:

      ./python.exe -m test -F test_eintr --timeout=60

      I modified the test to display immediately result into stdout:

      diff --git a/Lib/test/test_eintr.py b/Lib/test/test_eintr.py
index 25f86d3..47b89d3 100644
--- a/Lib/test/test_eintr.py
+++ b/Lib/test/test_eintr.py
@@ -1,6 +1,8 @@
 import os
+import sys
 import signal
 import unittest
+import subprocess
 
 from test import support
 from test.support import script_helper
@@ -15,7 +17,9 @@ class EINTRTests(unittest.TestCase):
         # thread (for reliable signal delivery).
         tester = support.findfile("eintr_tester.py", subdir="eintrdata")
         # use -u to try to get the full output if the test hangs or crash
-        script_helper.assert_python_ok("-u", tester)
+        proc = subprocess.run([sys.executable, "-u", tester, "-v"])
+        if proc.returncode:
+            self.fail("fail")
 
 
 if __name__ == "__main__":

    4. vstinner commented on Nov 30, 2018

      @vstinner
      vstinner
      on Nov 30, 2018
      MemberAuthor

      I stopped my manual test after 71 iterations.

    5. vstinner commented on Dec 4, 2018

      @vstinner
      vstinner
      on Dec 4, 2018
      MemberAuthor

      Oh. That's just a variant of the old bpo-25234.

    6. vstinner commented on Dec 4, 2018

      @vstinner
      vstinner
      on Dec 4, 2018
      MemberAuthor

      New changeset 4752e65 by Victor Stinner in branch 'master':
      bpo-35363, test_eintr: skip test_open() on macOS (GH-10896)
      4752e65

    7. vstinner commented on Dec 5, 2018

      @vstinner
      vstinner
      on Dec 5, 2018
      MemberAuthor

      New changeset 93d038c by Victor Stinner in branch '3.6':
      bpo-35363, test_eintr: skip test_open() on macOS (GH-10896) (GH-10912)
      93d038c

    8. vstinner commented on Dec 5, 2018

      @vstinner
      vstinner
      on Dec 5, 2018
      MemberAuthor

      New changeset c93e3b0 by Victor Stinner in branch '3.7':
      bpo-35363, test_eintr: skip test_open() on macOS (GH-10896) (GH-10911)
      c93e3b0

    9. vstinner
      closed this as completedon Dec 5, 2018

    10. vstinner commented on Dec 5, 2018

      @vstinner
      vstinner
      on Dec 5, 2018
      MemberAuthor

      New changeset aa8ae90 by Victor Stinner in branch 'master':
      bpo-35363: test_eintr runs eintr_tester.py in verbose mode (GH-10965)
      aa8ae90

    11. miss-islington commented on Dec 5, 2018

      @miss-islington
      miss-islington
      on Dec 5, 2018
      Contributor

      New changeset 0fc3b2f by Miss Islington (bot) in branch '3.7':
      bpo-35363: test_eintr runs eintr_tester.py in verbose mode (GH-10965)
      0fc3b2f

    12. miss-islington commented on Dec 5, 2018

      @miss-islington
      miss-islington
      on Dec 5, 2018
      Contributor

      New changeset 4699f2a by Miss Islington (bot) in branch '3.6':
      bpo-35363: test_eintr runs eintr_tester.py in verbose mode (GH-10965)
      4699f2a

    13. vstinner commented on Dec 6, 2018

      @vstinner
      vstinner
      on Dec 6, 2018
      MemberAuthor

      New changeset 0644b33 by Victor Stinner in branch 'master':
      bpo-35363: test_eintr uses print(flush=True) (GH-10990)
      0644b33

    14. miss-islington commented on Dec 6, 2018

      @miss-islington
      miss-islington
      on Dec 6, 2018
      Contributor

      New changeset 560fa4d by Miss Islington (bot) in branch '3.7':
      bpo-35363: test_eintr uses print(flush=True) (GH-10990)
      560fa4d

    15. miss-islington commented on Dec 6, 2018

      @miss-islington
      miss-islington
      on Dec 6, 2018
      Contributor

      New changeset 3f0e8e2 by Miss Islington (bot) in branch '3.6':
      bpo-35363: test_eintr uses print(flush=True) (GH-10990)
      3f0e8e2

    16. vstinner commented on Dec 6, 2018

      @vstinner
      vstinner
      on Dec 6, 2018
      MemberAuthor

      Follow-up: bpo-35425, "test_eintr fails randomly on AMD64 FreeBSD 10-STABLE Non-Debug 3.7: TypeError: 'int' object is not callable".

    17. ezio-melotti
      transferred this issue fromon Apr 10, 2022
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