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  1. Qt
  2. QTBUG-135810

[REG 6.8.1 -> 6.8.3] Crashes in QRhi::endFrame / glDrawElements on Android

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Details

    • Bug
    • Resolution: Unresolved
    • P2: Important
    • None
    • 6.8.3
    • GUI: OpenGL
    • NDK 26.2.11394342
    • Android
    • 2025wk18s1QtforAndroid, 2025wk20s1QtforAndroid

    Description

      After releasing an update of our app where we upgraded from Qt 6.8.1 to 6.8.3, we’re seeing frequent crashes like this:

      SIGSEGV: Segfault
  #00  pc 0x0000000000070678  /vendor/lib/egl/libGLESv2_mtk.so
  #01  pc 0x000000000008a687  /vendor/lib/egl/libGLESv2_mtk.so
  #02  pc 0x000000000008b9d9  /vendor/lib/egl/libGLESv2_mtk.so
  #03  pc 0x000000000008b225  /vendor/lib/egl/libGLESv2_mtk.so
  #04  pc 0x000000000008aad3  /vendor/lib/egl/libGLESv2_mtk.so (glDrawElements+70)
  #05  pc 0x000000000039c989  /data/app/<redacted>/lib/arm/libQt6Gui_armeabi-v7a.so (BuildId: b2232efa3964a449e8fa440c630c49460da106de)
  #06  pc 0x000000000039def1  /data/app/<redacted>/lib/arm/libQt6Gui_armeabi-v7a.so (BuildId: b2232efa3964a449e8fa440c630c49460da106de)
  #07  pc 0x00000000002ede3d  /data/app/<redacted>/lib/arm/libQt6Gui_armeabi-v7a.so (QRhi::endFrame(QRhiSwapChain*, QFlags<QRhi::EndFrameFlag>)+40) (BuildId: b2232efa3964a449e8fa440c630c49460da106de)
  #08  pc 0x00000000003bd15d  /data/app/<redacted>/lib/arm/libQt6Quick_armeabi-v7a.so (BuildId: ea85ba027241314652934b700d1b7940b1f361c0)
  #09  pc 0x00000000003bdbf7  /data/app/<redacted>/lib/arm/libQt6Quick_armeabi-v7a.so (BuildId: ea85ba027241314652934b700d1b7940b1f361c0)
  #10  pc 0x0000000000310ec5  /data/app/<redacted>/lib/arm/libQt6Core_armeabi-v7a.so (BuildId: 9630d22248ed5fa9af6f234bb9e88cb292c1ba84)
  #11  pc 0x00000000000a90a5  /apex/com.android.runtime/lib/bionic/libc.so (__pthread_start(void*)+40)
  #12  pc 0x00000000000620a1  /apex/com.android.runtime/lib/bionic/libc.so (__start_thread+30)

      This happens:

      • With different OpenGL libraries: libGLESv2_mtk.so, libGLESv2_adreno.so, libGLESv2_powervr.so
      • On arm64-v8a, armeabi-v7a, and x64, but more commonly on 32-bit armeabi-v7a and generally older devices.
      • On various Android devices (see the attached non-exhaustive list).
      • On all our supported OS versions, but more frequently on older releases (see attached list).

      Unfortunately we have so far been unable to reproduce the issue on any of our test devices. In previous versions of our app this crash happened very infrequently, but now it is affecting a significant percentage of sessions, so something must have changed.

      Any ideas as to how to debug this further or what this could be caused by would be appreciated.

      I saw that QTBUG-132780 touched the OpenGL code in Qt 6.8.3. Could that be related?

       

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        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-134496 Drawing errors on some Android devices

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Need More Info
          For Gerrit Dashboard: QTBUG-135810
          # Subject Branch Project Status CR V
          636660,6 Revert "rhi: gl: Maintain Qt 5 compat wrt disk cache behavior" dev qt/qtbase Status: NEW 0 0

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              lagocs Laszlo Agocs
              fseiffert Frederik Seiffert
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              Dates

                Created:
                Updated:

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