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  1. Qt
  2. QTBUG-82911

Fatal signal in QTestEventLoop with another QProcess

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    Details

    • Type: Bug
    • Status: Reported
    • Priority: P2: Important
    • Resolution: Unresolved
    • Affects Version/s: 5.14.1
    • Fix Version/s: None
    • Component/s: Testing: qtestlib
    • Labels:
      None
    • Environment:
      Arch Linux (Manjaro)
    • Platform/s:
      Linux/Wayland

      Description

      I try to run the following autotest robustly:

      https://cgit.kde.org/kwin.git/tree/autotests/integration/lockscreen.cpp

      But when running under load - and only when running under load - (I simulate on my workstation with stress --cpu 8 --io 4 --vm 2) it crashes consistently at some point either in a normal QTest::qWait() or in a QSignalSpy::wait().

      Attached is a coredump.

      The uniqueness of this test is that for the screen locker a second process is started by KWin/KScreenLocker:

      https://cgit.kde.org/kscreenlocker.git/tree/ksldapp.cpp#n210

      I assume this is in some way the catalyst for this crash. 

        Attachments

        1. lockscreen_coredump
          10 kB
        2. lockscreen_log
          26 kB
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            People

            Assignee:
            macadder Jason McDonald
            Reporter:
            romangg Roman Gilg
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              Dates

              Created:
              Updated:

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