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  1. Qt
  2. QTBUG-106269

Qt Quick apps immediately crash under Android 6

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Details

    • Android
    • ffecc122d7 (qt/qtdeclarative/dev) ffecc122d7 (qt/tqtc-qtdeclarative/dev) ee9a7b1bee (qt/qtdeclarative/6.4) ee9a7b1bee (qt/tqtc-qtdeclarative/6.4) 38e9472d91 (qt/tqtc-qtdeclarative/6.2) 89fc2b5730 (qt/tqtc-qtdeclarative/5.15)

    Description

      After upgrading to Qt 6, we noticed that our Qt Quick app immediately crashes on our Android 6 devices. Even a hello world app crashes.

      The device runs Linux kernel 3.4.48.

      We traced down the crash to OSAllocatorPosix.cpp where the code expects madvise() to succeed with provided memory, but it fails with EBADF. Given how unimportant these madvise() calls are, I find it excessive to crash the whole app.

      EBADF is to be expected according to Linux man pages:

      EBADF The map exists, but the area maps something that isn't a file.

      Our patch fixing the issue can be seen here.

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-106864 Reg-5.15.9->5.15.10: Android crash on startup on armv7 (32bit) devices

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-107774 madvise() terminates application due to EBADF code

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
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            People

              ulherman Ulf Hermann
              lubosd Lubos Dolezel
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              Dates

                Created:
                Updated:
                Resolved: