Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-80845

simple app with qml failed with SEGFAULT with QSG_RENDER_LOOP=threaded

    XMLWordPrintable

    Details

    • Type: Bug
    • Status: Reported
    • Priority: P1: Critical
    • Resolution: Unresolved
    • Affects Version/s: 5.14.0
    • Fix Version/s: None
    • Component/s: Quick: Other
    • Labels:
    • Platform/s:
      Linux/Wayland

      Description

      gdb output:

       root@b2qt-intel-corei7-64:/opt/bug1# gdb ./bug1 
       GNU gdb (GDB) 8.2.1
       Copyright (C) 2018 Free Software Foundation, Inc.
       License GPLv3+: GNU GPL version 3 or later <[http://gnu.org/licenses/gpl.html]>
       This is free software: you are free to change and redistribute it.
       There is NO WARRANTY, to the extent permitted by law.
       Type "show copying" and "show warranty" for details.
       This GDB was configured as "x86_64-poky-linux".
       Type "show configuration" for configuration details.
       For bug reporting instructions, please see:
       <[http://www.gnu.org/software/gdb/bugs/]>.
       Find the GDB manual and other documentation resources online at:
       <[http://www.gnu.org/software/gdb/documentation/]>.
      
      For help, type "help".
       Type "apropos word" to search for commands related to "word"...
       Reading symbols from ./bug1...done.
       (gdb) run 
       Starting program: /opt/bug1/bug1 
       [Thread debugging using libthread_db enabled]
       Using host libthread_db library "/lib/libthread_db.so.1".
       QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
       [New Thread 0x7ffff358a700 (LWP 3921)]
       [New Thread 0x7ffff184a700 (LWP 3925)]
       [New Thread 0x7fffebfff700 (LWP 3926)]
      
      Thread 1 "bug1" received signal SIGSEGV, Segmentation fault.
       0x000055555586c930 in ?? ()
       (gdb) bt
       #0 0x000055555586c930 in ?? ()
       #1 0x00007ffff3bc050f in ?? () from /usr/lib/dri/i965_dri.so
       #2 0x00007ffff3bc0590 in ?? () from /usr/lib/dri/i965_dri.so
       #3 0x00007ffff45769fb in ?? () from /usr/lib/libEGL.so.1
       #4 0x00007ffff45653aa in eglMakeCurrent () from /usr/lib/libEGL.so.1
       #5 0x00007ffff4658c9f in ?? () from /usr/lib/libQt5EglFSDeviceIntegration.so.5
       #6 0x00007ffff7b17e07 in QOpenGLContext::doneCurrent() () from /usr/lib/libQt5Gui.so.5
       #7 0x00007ffff7ae6a5a in QOffscreenSurface::~QOffscreenSurface() () from /usr/lib/libQt5Gui.so.5
       #8 0x00007ffff7ae6a79 in QOffscreenSurface::~QOffscreenSurface() () from /usr/lib/libQt5Gui.so.5
       #9 0x00007ffff05e53e4 in ?? () from /usr/lib/libQt5QuickShapes.so.5
       #10 0x00007ffff05ea2c5 in ?? () from /usr/lib/libQt5QuickShapes.so.5
       #11 0x00007ffff05e107d in ?? () from /usr/lib/libQt5QuickShapes.so.5
       #12 0x00007ffff05e12c0 in QQuickShape::updatePolish() () from /usr/lib/libQt5QuickShapes.so.5
       #13 0x00007ffff28cd493 in QQuickWindowPrivate::polishItems() () from /usr/lib/libQt5Quick.so.5
       #14 0x00007ffff2873d66 in ?? () from /usr/lib/libQt5Quick.so.5
       #15 0x00007ffff2874f65 in ?? () from /usr/lib/libQt5Quick.so.5
       #16 0x00007ffff2875803 in ?? () from /usr/lib/libQt5Quick.so.5
       #17 0x00007ffff7ae5c25 in QWindow::event(QEvent*) () from /usr/lib/libQt5Gui.so.5
       #18 0x00007ffff28d7ffb in QQuickWindow::event(QEvent*) () from /usr/lib/libQt5Quick.so.5
       #19 0x00007ffff728ff20 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
       #20 0x00007ffff7adbb23 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () from /usr/lib/libQt5Gui.so.5
       #21 0x00007ffff7adbdbd in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/libQt5Gui.so.5
       #22 0x00007ffff7ab7ecb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Gui.so.5
       #23 0x00007ffff7ab8140 in QWindowSystemInterface::flushWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Gui.so.5
       #24 0x00007ffff460253a in QEglFSWindow::setVisible(bool) () from /usr/lib/libQt5EglFSDeviceIntegration.so.5
       #25 0x00007ffff7ae5833 in QWindowPrivate::setVisible(bool) () from /usr/lib/libQt5Gui.so.5
       #26 0x00007ffff29840a0 in QQuickWindowQmlImpl::setWindowVisibility() () from /usr/lib/libQt5Quick.so.5
       #27 0x00007ffff298453b in QQuickWindowQmlImpl::componentComplete() () from /usr/lib/libQt5Quick.so.5
       #28 0x00007ffff7849c2d in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () from /usr/lib/libQt5Qml.so.5
       #29 0x00007ffff77d3641 in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () from /usr/lib/libQt5Qml.so.5
       #30 0x00007ffff77d3752 in QQmlComponentPrivate::completeCreate() () from /usr/lib/libQt5Qml.so.5
       #31 0x00007ffff77d30d9 in QQmlComponent::create(QQmlContext*) () from /usr/lib/libQt5Qml.so.5
       #32 0x00007ffff783e88e in QQmlApplicationEnginePrivate::finishLoad(QQmlComponent*) () from /usr/lib/libQt5Qml.so.5
       #33 0x00007ffff783eb6e in QQmlApplicationEnginePrivate::startLoad(QUrl const&, QByteArray const&, bool) () from /usr/lib/libQt5Qml.so.5
       #34 0x00007ffff783ebad in QQmlApplicationEngine::load(QUrl const&) () from /usr/lib/libQt5Qml.so.5
       #35 0x000055555555644a in main (argc=<optimized out>, argv=<optimized out>) at ../main.cpp:24
       (gdb)
      

      export QSG_RENDER_LOOP=basic – fixes it

      qtdiag:

      root@b2qt-intel-corei7-64:/opt/bug1# qtdiag
      QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
      QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
      QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
      Unable to query physical screen size, defaulting to 100 dpi.
      To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).
      Qt 5.14.0 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 8.3.0) on "eglfs" 
      OS: Boot to Qt for Embedded Linux 2.7.1 (warrior) [linux version 4.19.40-intel-pk-standard]
      
      Architecture: x86_64; features: SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2
      
      Environment:
        QSG_RENDER_LOOP="threaded"
      
      Features: QT_NO_EXCEPTIONS QT_NO_SESSIONMANAGER
      
      Library info:
        PrefixPath: /usr
        DocumentationPath: /usr/share/doc
        HeadersPath: /usr/include/qt5
        LibrariesPath: /usr/lib
        LibraryExecutablesPath: /usr/lib/libexec
        BinariesPath: /usr/bin
        PluginsPath: /usr/lib/plugins
        ImportsPath: /usr/lib/imports
        Qml2ImportsPath: /usr/lib/qml
        ArchDataPath: /usr/lib
        DataPath: /usr/share
        TranslationsPath: /usr/share/translations
        ExamplesPath: /usr/share/examples
        TestsPath: /usr/share/tests
        SettingsPath: /etc
      
      Standard paths [*...* denote writable entry]:
        DesktopLocation: "Desktop" */home/root/Desktop*
        DocumentsLocation: "Documents" */home/root/Documents*
        FontsLocation: "Fonts" */home/root/.local/share/fonts* /home/root/.fonts /usr/local/share/fonts /usr/share/fonts
        ApplicationsLocation: "Applications" */home/root/.local/share/applications* /usr/local/share/applications /usr/share/applications
        MusicLocation: "Music" */home/root/Music*
        MoviesLocation: "Movies" */home/root/Videos*
        PicturesLocation: "Pictures" */home/root/Pictures*
        TempLocation: "Temporary Directory" */tmp*
        HomeLocation: "Home" */home/root*
        AppLocalDataLocation: "Application Data" */home/root/.local/share/QtProject/qtdiag* /usr/local/share/QtProject/qtdiag /usr/share/QtProject/qtdiag
        CacheLocation: "Cache" */home/root/.cache/QtProject/qtdiag*
        GenericDataLocation: "Shared Data" */home/root/.local/share* /usr/local/share /usr/share
        RuntimeLocation: "Runtime" */tmp/runtime-root*
        ConfigLocation: "Configuration" */home/root/.config* /etc/xdg
        DownloadLocation: "Download" */home/root/Downloads*
        GenericCacheLocation: "Shared Cache" */home/root/.cache*
        GenericConfigLocation: "Shared Configuration" */home/root/.config* /etc/xdg
        AppDataLocation: "Application Data" */home/root/.local/share/QtProject/qtdiag* /usr/local/share/QtProject/qtdiag /usr/share/QtProject/qtdiag
        AppConfigLocation: "Application Configuration" */home/root/.config/QtProject/qtdiag* /etc/xdg/QtProject/qtdiag
      
      File selectors (increasing order of precedence):
        C unix linux b2qt
      
      Network:
        Using "OpenSSL 1.1.1b  26 Feb 2019", version: 0x1010102f
      
      Platform capabilities: ThreadedPixmaps OpenGL ThreadedOpenGL NonFullScreenWindows NativeWidgets RasterGLSurface
      
      Style hints:
        mouseDoubleClickInterval: 400
        mousePressAndHoldInterval: 800
        startDragDistance: 10
        startDragTime: 500
        startDragVelocity: 0
        keyboardInputInterval: 400
        keyboardAutoRepeatRate: 30
        cursorFlashTime: 1000
        showIsFullScreen: 0
        showIsMaximized: 0
        passwordMaskDelay: 0
        passwordMaskCharacter: U+25CF
        fontSmoothingGamma: 1.7
        useRtlExtensions: 0
        setFocusOnTouchRelease: 0
        tabFocusBehavior: Qt::TabFocusAllControls 
        singleClickActivation: 0
      
      Additional style hints (QPlatformIntegration):
        ReplayMousePressOutsidePopup: 1
      
      Theme:
        Platforms requested : 
                  available : snap,flatpak,xdgdesktopportal
        Styles requested    : 
               available    : Windows,Fusion
      Fonts:
        General font : "Bitstream Vera Sans" 12
        Fixed font   : "Bitstream Vera Sans" 12
        Title font   : "Bitstream Vera Sans" 12
        Smallest font: "Bitstream Vera Sans" 12
      
      Palette:
        QPalette::WindowText: #ff000000
        QPalette::Button: #ffefefef
        QPalette::Light: #ffffffff
        QPalette::Midlight: #ffcbcbcb
        QPalette::Dark: #ff9f9f9f
        QPalette::Mid: #ffb8b8b8
        QPalette::Text: #ff000000
        QPalette::BrightText: #ffffffff
        QPalette::ButtonText: #ff000000
        QPalette::Base: #ffffffff
        QPalette::Window: #ffefefef
        QPalette::Shadow: #ff767676
        QPalette::Highlight: #ff308cc6
        QPalette::HighlightedText: #ffffffff
        QPalette::Link: #ff0000ff
        QPalette::LinkVisited: #ffff00ff
        QPalette::AlternateBase: #fff7f7f7
        QPalette::NoRole: #ff000000
        QPalette::ToolTipBase: #ffffffdc
        QPalette::ToolTipText: #ff000000
        QPalette::PlaceholderText: #80000000
      
      Screens: 3, High DPI scaling: inactive
      # 0 "DP1" Depth: 32 Primary: yes
        Manufacturer: GEC
        Model: Onlap1503-
        Serial number: 8888-
        Geometry: 1920x1080+0+0 Available: 1920x1080+0+0
        Virtual geometry: 5760x1080+0+0 Available: 5760x1080+0+0
        3 virtual siblings
        Physical size: 350x200 mm  Refresh: 60 Hz Power state: 0
        Physical DPI: 139.337,137.16 Logical DPI: 139.337,137.16 Subpixel_None
        DevicePixelRatio: 1 Pixel density: 1
        Primary orientation: 2 Orientation: 2 Native orientation: 0 OrientationUpdateMask: 0
      
      # 1 "DP3" Depth: 32 Primary: no
        Manufacturer: GEC
        Model: Onlap1303-
        Serial number: 8888-
        Geometry: 1920x1080+1920+0 Available: 1920x1080+1920+0
        Virtual geometry: 5760x1080+0+0 Available: 5760x1080+0+0
        3 virtual siblings
        Physical size: 300x170 mm  Refresh: 60 Hz Power state: 0
        Physical DPI: 162.56,161.365 Logical DPI: 162.56,161.365 Subpixel_None
        DevicePixelRatio: 1 Pixel density: 1
        Primary orientation: 2 Orientation: 2 Native orientation: 0 OrientationUpdateMask: 0
      
      # 2 "DP4" Depth: 32 Primary: no
        Manufacturer: Acer Technologies
        Model: Acer H6517ST-
        Serial number: JLA110015910-
        Geometry: 1920x1080+3840+0 Available: 1920x1080+3840+0
        Virtual geometry: 5760x1080+0+0 Available: 5760x1080+0+0
        3 virtual siblings
        Physical size: 487.68x274.32 mm  Refresh: 60 Hz Power state: 0
        Physical DPI: 100,100 Logical DPI: 100,100 Subpixel_None
        DevicePixelRatio: 1 Pixel density: 1
        Primary orientation: 2 Orientation: 2 Native orientation: 0 OrientationUpdateMask: 0
      
      Touch devices: 1
        TouchScreen "ILITEK Multi-Touch-V5100", max 1 touch points, capabilities: Position Area
      
      
      LibGLES Vendor: Intel Open Source Technology Center
      Renderer: Mesa DRI Intel(R) Iris Plus Graphics 650 (Kaby Lake GT3e) 
      Version: OpenGL ES 3.2 Mesa 19.0.1
      Shading language: OpenGL ES GLSL ES 3.20
      Format: Version: 3.2 Profile: 0 Swap behavior: 0 Buffer size (RGB): 8,8,8
      
      

        Attachments

        1. bug1.tar.gz
          50 kB
        2. full-backtrace.txt
          32 kB

          Issue Links

          No reviews matched the request. Check your Options in the drop-down menu of this sections header.

            Activity

              People

              Assignee:
              w00t Robin Burchell
              Reporter:
              grigorii grigorii zimin
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

                Dates

                Created:
                Updated:

                  Gerrit Reviews

                  There are no open Gerrit changes