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  1. Qt
  2. QTBUG-46170

ComboBox randomly crashes with direcfb QPA plugin

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      Description

      QtQuick Dialog and ComboBox are randomly crashing with the log bellow using QtQuick 2D renderer with DirectFb.
      Possible workaround to set QSG_RENDER_LOOP="basic" which turns of the threading.

      ASSERT: "!weakref.load()" in file
      ../../include/QtCore/../../src/corelib/tools/qsharedpointer_impl.h, line 149
      global/qglobal.cpp: 28680 abort /media/root/lib/arm-linux-gnueabi/libc.so.6
      0x75518d7c
      
      1 qt_message_fatal qlogging.cpp 1415 0x757bb9f0
      2 QMessageLogger::fatal qlogging.cpp 636 0x757b7850
      3 qt_assert qglobal.cpp 2868 0x757b06a8
      4 QtSharedPointer::ExternalRefCountData::~ExternalRefCountData
      qsharedpointer_impl.h 149 0x7579a9ec
      5 QtSharedPointer::ExternalRefCountData::getAndRef qsharedpointer.cpp 1341
      0x75862ec8
      6 QWeakPointer<QObject>::QWeakPointer<QWindow>
      qsharedpointer_impl.h 693 0x7636a24c
      7 QPointer<QWindow>::QPointer qpointer.h 62 0x76369578
      8 QWindowSystemInterfacePrivate::ExposeEvent::ExposeEvent
      qwindowsysteminterface.cpp 361 0x76365788
      9 QWindowSystemInterface::handleExposeEvent qwindowsysteminterface.cpp 525
      0x76366034
      10 QPlatformWindow::setVisible qplatformwindow.cpp 149 0x76376aa4
      11 QDirectFbWindow::setVisible qdirectfbwindow.cpp 133 0x7520c3a8
      12 QWindow::setVisible qwindow.cpp 507 0x76393c70
      13 QWindow::showNormal qwindow.cpp 1847 0x763969e8
      14 QWindow::show qwindow.cpp 1775 0x763968fc
      15 QQuickPopupWindow::show qquickpopupwindow.cpp 105 0x6d298338
      16 QQuickMenu::__popup qquickmenu.cpp 434 0x6d28ee08
      17 QQuickMenu::qt_static_metacall moc_qquickmenu_p.cpp 249 0x6d2b28d8
      18 QQuickMenu::qt_metacall moc_qquickmenu_p.cpp 359 0x6d2b2ec0
      19 QQmlVMEMetaObject::metaCall qqmlvmemetaobject.cpp 972 0x76056d90
      20 QAbstractDynamicMetaObject::metaCall qobject_p.h 420 0x75e26f34
      21 QMetaObject::metacall qmetaobject.cpp 293 0x75a713cc
      22 CallMethod qv4qobjectwrapper.cpp 1151 0x7601bf2c
      23 CallPrecise qv4qobjectwrapper.cpp 1403 0x7601cc9c
      24 CallOverloaded qv4qobjectwrapper.cpp 1489 0x7601d0d4
      25 QV4::QObjectMethod::callInternal qv4qobjectwrapper.cpp 1890 0x7601f5c8
      26 QV4::QObjectMethod::call qv4qobjectwrapper.cpp 1817 0x7601f070
      27 QV4::Object::call qv4object_p.h 278 0x75f290a4
      28 QV4::Runtime::callProperty qv4runtime.cpp 930 0x76034de4
      29 QV4::Moth::VME::run qv4vme_moth.cpp 365 0x7602924c
      30 QV4::Moth::VME::exec qv4vme_moth.cpp 734 0x7602c568
      31 QV4::ScriptFunction::call qv4functionobject.cpp 405 0x75fb8ca0
      32 QV4::Object::call qv4object_p.h 278 0x75f290a4
      33 QQmlJavaScriptExpression::evaluate qqmljavascriptexpression.cpp 158
      0x761147f4
      34 QQmlBoundSignalExpression::evaluate qqmlboundsignal.cpp 281 0x76094338
      35 QQmlBoundSignal_callback qqmlboundsignal.cpp 408 0x76094b38
      36 QQmlNotifier::emitNotify qqmlnotifier.cpp 73 0x760eff24
      37 QQmlData::signalEmitted qqmlengine.cpp 715 0x7605d5a0
      38 QMetaObject::activate qobject.cpp 3603 0x75abbbe0
      39 QMetaObject::activate qobject.cpp 3582 0x75abb944
      40 QQuickMouseArea::clicked moc_qquickmousearea_p.cpp 586 0x6d746710
      41 QQuickMouseArea::setPressed qquickmousearea.cpp 1162 0x6d631b78
      42 QQuickMouseArea::mouseReleaseEvent qquickmousearea.cpp 743 0x6d630114
      43 QQuickItem::event qquickitem.cpp 7280 0x6d55791c
      44 QApplicationPrivate::notify_helper qapplication.cpp 3720 0x769f0210
      45 QApplication::notify qapplication.cpp 3164 0x769ed848
      46 QCoreApplication::notifyInternal qcoreapplication.cpp 935 0x75a66794
      47 QCoreApplication::sendEvent qcoreapplication.h 228 0x769dd964
      48 QQuickWindow::sendEvent qquickwindow.cpp 2532 0x6d576a90
      49 QQuickWindowPrivate::deliverMouseEvent qquickwindow.cpp 1511 0x6d5715ac
      50 QQuickWindow::mouseReleaseEvent qquickwindow.cpp 1551 0x6d5719fc
      51 QWindow::event qwindow.cpp 1963 0x76396f24
      52 QQuickWindow::event qquickwindow.cpp 1392 0x6d570dc4
      53 QApplicationPrivate::notify_helper qapplication.cpp 3720 0x769f0210
      54 QApplication::notify qapplication.cpp 3164 0x769ed848
      55 QCoreApplication::notifyInternal qcoreapplication.cpp 935 0x75a66794
      56 QCoreApplication::sendSpontaneousEvent qcoreapplication.h 231 0x769f3b24
      57 QGuiApplicationPrivate::processMouseEvent qguiapplication.cpp 1771
      0x76384014
      58 QGuiApplicationPrivate::processWindowSystemEvent qguiapplication.cpp 1573
      0x76383648
      59 QWindowSystemInterface::sendWindowSystemEvents qwindowsysteminterface.cpp
      572 0x7636635c
      60 QUnixEventDispatcherQPA::processEvents qunixeventdispatcher.cpp 63
      0x752aca5c
      61 QEventLoop::processEvents qeventloop.cpp 128 0x75a62674
      62 QEventLoop::exec qeventloop.cpp 204 0x75a629e4
      63 QCoreApplication::exec qcoreapplication.cpp 1188 0x75a670b4
      64 QGuiApplication::exec qguiapplication.cpp 1507 0x76382f0c
      65 QApplication::exec qapplication.cpp 2956 0x769ecd5c
      66 main main.cpp 31 0x8f08
      

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            Assignee:
            janichol Andy Nichols
            Reporter:
            qtcomsupport Qt Support
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              Created:
              Updated:
              Resolved:

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