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  1. Qt
  2. QTBUG-94148

QFlags attempts eventfd_write and segfaults on android

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Details

    • Bug
    • Status: Closed
    • P1: Critical
    • Resolution: Fixed
    • 6.1.1
    • 6.3
    • QML: Tooling
    • Android
    • 2021wk24PO2, 2021wk26PO2, 2021wk36POAndroid&Mobile, 2021wk38POAndroid&Mobile, 2021wk42POAndroid&Mobile, 2021wk44POAndroid&Mobile, 2021wk46POAndroid&Mobile, 2021wk48POAndroid&Mobile, 2021wk50POAndroid&Mobile

    Description

      When trying to run QMLBench on android, a new QProcess is created and is started with start()

       

      p->start(app.arguments().constFirst(), sanitizedArgCopy);

      This immediately segfaults.
      Debugging leads to qflags.h:115

      Name Value Type
      flags QIODeviceBase::ReadWrite (3) QIODeviceBase::OpenModeFlag
      this QIODeviceBase::Append (0x0004) QFlags<QIODeviceBase::OpenModeFlag>

      From here, all I can do is look at the disasembly and see that eventfd_write is called at some point, which is the originator of the segfault.

      Backtrace attached.

       

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          For Gerrit Dashboard: QTBUG-94148
          # Subject Branch Project Status CR V

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            People

              villevoutilainen_qt Ville Voutilainen
              daniel.smith Daniel Smith
              Veli-Pekka Heinonen Veli-Pekka Heinonen
              Rami Potinkara Rami Potinkara
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              1 Vote for this issue
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              Dates

                Created:
                Updated:
                Resolved:

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