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  1. Qt
  2. QTBUG-136956

Access violation in QSGRenderThread::syncAndRender() on accessing the window pointer

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Details

    • Bug
    • Resolution: Unresolved
    • Not Evaluated
    • None
    • 6.8.3
    • Qt RHI, Quick: SceneGraph
    • None
    • Windows

    Description

      Observing this when analyzing our users' crashes in Sentry.
      It's never reproduced in our testing environment, so I have no idea about step/preconditions.

      Unhandled exception at 0x00000242932DB790 in 6c37ee1b-5697-4be0-ae20-7f6d647bb54a.dmp: 0xC0000005: Access violation executing location 0x00000242932DB790.

      Call stack:

       	00000242932db790()	Unknown
 	Qt6Core.dll!doActivate<0>(QObject * sender, int signal_index, void * * argv) Line 4140	C++
 	Qt6Core.dll!QMetaObject::activate(QObject * sender, const QMetaObject * m, int local_signal_index, void * * argv) Line 4184	C++
>	Qt6Quick.dll!QSGRenderThread::syncAndRender() Line 808	C++
 	Qt6Quick.dll!QSGRenderThread::run() Line 979	C++
 	Qt6Core.dll!QThreadPrivate::start(void * arg) Line 273	C++
 	[External Code]

      Crashed on trying to call window->afterFrameEnd() in QSGRenderThread::syncAndRender(). Perhaps the window is already destroyed.

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        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-132653 Render thread calls into window after window has already been destroyed

          • 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; Flaky tests; 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.
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              lagocs Laszlo Agocs
              studiosus Vladimir Belyavsky
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              Dates

                Created:
                Updated:

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