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  1. Qt
  2. QTBUG-109708

Startup crash in QRhiD3D11::endFrame() with nullptr access

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Details

    • Windows
    • 2581bed66 (dev), 758e249f6 (6.6), 309b5c2ee (6.5), adf7b8c8c (tqtc/lts-6.2), c9354149f (tqtc/lts-6.5), c738a349d (dev), 965c237aa (6.7), 47ccda4a1 (6.6), 96299182f (dev), 32b4d8bb1 (6.7), bb28e7e14 (6.6)

    Description

      I see such crashes among our users crash reports. It's never reproduced for me locally and I have no idea why this may happen for end users.

      Unhandled exception at 0x00007FFE67B9E1C3 (Qt6Gui.dll) in minidump (10).dmp: 0xC0000005: Access violation reading location 0x0000000000000000.

      Stack:

      >	Qt6Gui.dll!QRhiD3D11::endFrame(QRhiSwapChain * swapChain, QFlags<enum QRhi::EndFrameFlag> flags) Line 1185	C++
 	Qt6Gui.dll!QRhi::endFrame(QRhiSwapChain * swapChain, QFlags<enum QRhi::EndFrameFlag> flags) Line 6799	C++
 	Qt6Quick.dll!QSGRenderThread::syncAndRender() Line 792	C++
 	Qt6Quick.dll!QSGRenderThread::run() Line 990	C++
 	Qt6Core.dll!QThreadPrivate::start(void * arg) Line 328	C++
 	kernel32.dll!BaseThreadInitThunk()	Unknown
 	ntdll.dll!RtlUserThreadStart()	Unknown

       

      Seems swapChainD->swapChain might be nullptr in some cases and this provokes the crash.

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-109709 Crash on QGles2Buffer::create() with nullptr acess

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Open
          For Gerrit Dashboard: QTBUG-109708
          # Subject Branch Project Status CR V
          543988,1 rhi: d3d: Print more details on swapchain creation failure tqtc/lts-6.2 qt/tqtc-qtbase Status: NEW 0 0

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