[tbb-bugs] #27120 [Applications/Quality Assurance and Testing]: tbb-testsuite: marionette tests are failing when using strace

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#27120: tbb-testsuite: marionette tests are failing when using strace
-------------------------------------+-------------------------------------
     Reporter:  boklm                |      Owner:  boklm
         Type:  defect               |     Status:  assigned
     Priority:  Medium               |  Milestone:
    Component:                       |    Version:
  Applications/Quality Assurance     |
  and Testing                        |   Keywords:  boklm201808,
     Severity:  Normal               |  TorBrowserTeam201808, tbb-testsuite
Actual Points:                       |  Parent ID:  #27105
       Points:                       |   Reviewer:
      Sponsor:                       |
-------------------------------------+-------------------------------------
 In the marionette tests that we run from the testsuite, we are running the
 browser with strace in order to check the system calls and detect possible
 files created outside the browser directory, and direct network
 connections.

 When running the testsuite on an esr60 based Tor Browser, the browser
 window does not open and an strace process takes a lot of cpu, until we
 get the following timeout error:
 {{{
 Using workspace for temporary data: "/home/user/tbb-
 testsuite/reports/r/FmdSZphWEU/results-tor-browser-linux64-8.0a9_es-
 ES.tar.xz/slider_settings_1_ws"
 mozversion application_buildid: 20180204020101
 mozversion application_display_name: Tor Browser
 mozversion application_id: {ec8030f7-c20a-464f-9b0e-13a3a9e97384}
 mozversion application_name: Firefox
 mozversion application_remotingname: firefox
 mozversion application_vendor: Mozilla
 mozversion application_version: 60.1.0
 mozversion platform_buildid: 20180204020101
 mozversion platform_version: 60.1.0
 Application command: /home/user/tbb-testsuite/tmp/_VycbfqfU2/tor-
 browser_es-ES/Browser/ff_slider_settings_1 -no-remote -marionette -profile
 /home/user/tbb-testsuite/reports/r/FmdSZphWEU/results-tor-browser-
 linux64-8.0a9_es-ES.tar.xz/slider_settings_1_ws/profile.default-1534170518
  2:00.17 LOG: MainThread ERROR Failure during harness execution
 Traceback (most recent call last):

   File "/home/user/tbb-testsuite/virtualenv-
 marionette-4.3.0/local/lib/python2.7/site-
 packages/marionette_harness-4.3.0-py2.7.egg/marionette_harness/runtests.py",
 line 92, in cli
     failed = harness_instance.run()

   File "/home/user/tbb-testsuite/virtualenv-
 marionette-4.3.0/local/lib/python2.7/site-
 packages/marionette_harness-4.3.0-py2.7.egg/marionette_harness/runtests.py",
 line 72, in run
     runner.run_tests(tests)

   File "/home/user/tbb-testsuite/virtualenv-
 marionette-4.3.0/local/lib/python2.7/site-
 packages/marionette_harness-4.3.0-py2.7.egg/marionette_harness/runner/base.py",
 line 837, in run_tests
     self.marionette = self.driverclass(**self._build_kwargs())

   File "/home/user/tbb-testsuite/virtualenv-
 marionette-4.3.0/local/lib/python2.7/site-
 packages/marionette_driver-2.5.0-py2.7.egg/marionette_driver/marionette.py",
 line 621, in __init__
     self.start_binary(self.startup_timeout)

   File "/home/user/tbb-testsuite/virtualenv-
 marionette-4.3.0/local/lib/python2.7/site-
 packages/marionette_driver-2.5.0-py2.7.egg/marionette_driver/marionette.py",
 line 633, in start_binary
     self.raise_for_port(timeout=timeout)

   File "/home/user/tbb-testsuite/virtualenv-
 marionette-4.3.0/local/lib/python2.7/site-
 packages/marionette_driver-2.5.0-py2.7.egg/marionette_driver/marionette.py",
 line 710, in raise_for_port
     self.host, self.port))

 IOError: Process killed after 120s because no connection to Marionette
 server could be established. Check gecko.log for errors
 }}}

 Disabling the use of strace is fixing the issue.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27120>
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