Bug 350889

Application: systemsettings5 (5.3.1)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-25-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
when selecting window decorations ins system settings, system settings craches

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f322e1d6780 (LWP 1817))]

Thread 4 (Thread 0x7f321d942700 (LWP 1818)):
#0  0x00007f322a9488dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3228c62b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f3228c6464f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f321fe8d099 in QXcbEventReader::run (this=0x1b525d0) at qxcbconnection.cpp:1105
#4  0x00007f322afc9b0e in QThreadPrivate::start (arg=0x1b525d0) at thread/qthread_unix.cpp:337
#5  0x00007f3227b7c6aa in start_thread (arg=0x7f321d942700) at pthread_create.c:333
#6  0x00007f322a953eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f320d40a700 (LWP 1819)):
#0  0x00007f322a9488dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f322765debc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f322765dfcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f322b260c6c in QEventDispatcherGlib::processEvents (this=0x7f32080008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f322b2053e2 in QEventLoop::exec (this=this@entry=0x7f320d409e20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f322afc4b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3229f8ff65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f322afc9b0e in QThreadPrivate::start (arg=0x25e5a80) at thread/qthread_unix.cpp:337
#8  0x00007f3227b7c6aa in start_thread (arg=0x7f320d40a700) at pthread_create.c:333
#9  0x00007f322a953eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f3205d80700 (LWP 1820)):
#0  0x00007f322a9488dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f322765debc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f322765dfcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f322b260c6c in QEventDispatcherGlib::processEvents (this=0x7f32000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f322b2053e2 in QEventLoop::exec (this=this@entry=0x7f3205d7fe20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f322afc4b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f3229f8ff65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f322afc9b0e in QThreadPrivate::start (arg=0x29c7560) at thread/qthread_unix.cpp:337
#8  0x00007f3227b7c6aa in start_thread (arg=0x7f3205d80700) at pthread_create.c:333
#9  0x00007f322a953eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f322e1d6780 (LWP 1817)):
[KCrash Handler]
#6  0x0000000000000020 in ?? ()
#7  0x00007f320dadc8e1 in KDecoration2::Decoration::update(QRect const&) () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#8  0x00007f320dadc95b in KDecoration2::Decoration::update() () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#9  0x00007f320603fa40 in Breeze::Decoration::setOpacity (this=this@entry=0x2931880, value=<optimized out>) at ../../kdecoration/breezedecoration.cpp:96
#10 0x00007f32060612f8 in Breeze::Decoration::qt_metacall (this=0x2931880, _c=QMetaObject::WriteProperty, _id=0, _a=0x7ffc6d1328f0) at moc_breezedecoration.cpp:150
#11 0x00007f322afaa5ca in updateProperty (newValue=..., this=0x2951ff0) at animation/qpropertyanimation.cpp:135
#12 QPropertyAnimation::updateCurrentValue (this=<optimized out>, value=...) at animation/qpropertyanimation.cpp:242
#13 0x00007f322afa5f48 in QVariantAnimationPrivate::setCurrentValueForProgress (this=this@entry=0x2951ff0, progress=progress@entry=0.99111111111111105) at animation/qvariantanimation.cpp:290
#14 0x00007f322afa6d1b in recalculateCurrentInterval (force=false, this=0x2951ff0) at animation/qvariantanimation.cpp:275
#15 QVariantAnimation::updateCurrentTime (this=<optimized out>) at animation/qvariantanimation.cpp:693
#16 0x00007f322afa2baf in QAbstractAnimation::setCurrentTime (this=0x2923fb0, msecs=140) at animation/qabstractanimation.cpp:1321
#17 0x00007f322afa2e96 in updateAnimationsTime (delta=10, this=0x1cacd20) at animation/qabstractanimation.cpp:606
#18 QUnifiedTimer::updateAnimationTimers (this=0x2276770) at animation/qabstractanimation.cpp:323
#19 0x00007f3229fcaa5e in QAbstractAnimationJob::setState(QAbstractAnimationJob::State) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x00007f3229ae7dac in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007f3229b42244 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007f3229af0ea3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#23 0x00007f3229a4edd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#24 0x00007f3229a531ae in QQuickItem::setWidth(double) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#25 0x00007f3229a5fbe6 in QQuickItem::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#26 0x00007f3229f09ba7 in QQmlPropertyPrivate::writeBinding(QObject*, QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*, QV4::ValueRef, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#27 0x00007f3229f7e51c in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#28 0x00007f3229f7ec7e in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#29 0x00007f3229f58497 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#30 0x00007f3229f5845e in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#31 0x00007f3229ef510c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#32 0x00007f322b238141 in QMetaObject::activate (sender=0x277bce0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3603
#33 0x00007f3229a4ee39 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#34 0x00007f3229ae6edc in QQuickFlickable::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#35 0x00007f3229a53c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#36 0x00007f3229a49a8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#37 0x00007f3229a4b9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#38 0x00007f3229a4edd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#39 0x00007f3229a53c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#40 0x00007f3229a49a8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#41 0x00007f3229a4b9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#42 0x00007f3229a4edd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#43 0x00007f3229a53c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#44 0x00007f3229a49a8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#45 0x00007f3229a4b9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#46 0x00007f3229a4edd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#47 0x00007f3229a53c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#48 0x00007f3229a49a8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#49 0x00007f3229a4b9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#50 0x00007f3229a4edd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#51 0x00007f3229a53c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#52 0x00007f3229a49a8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#53 0x00007f3229a4b9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#54 0x00007f3229a4edd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#55 0x00007f3229a53c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#56 0x00007f320c238798 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#57 0x00007f322bd13186 in QGridLayoutEngine::setGeometries (this=0x2764e58, contentsGeometry=..., styleInfo=<optimized out>) at util/qgridlayoutengine.cpp:1015
#58 0x00007f320c237f0f in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#59 0x00007f320c2384c7 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#60 0x00007f3229a53c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#61 0x00007f3229a49a8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#62 0x00007f3229a4b9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#63 0x00007f3229a4edd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#64 0x00007f3229a534fe in QQuickItem::setHeight(double) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#65 0x00007f3229b19d8f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#66 0x00007f3229b1b442 in QQuickView::resizeEvent(QResizeEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#67 0x00007f322ba3f7b5 in QWindow::event (this=0x2623ff0, ev=<optimized out>) at kernel/qwindow.cpp:2051
#68 0x00007f3229a72dd3 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#69 0x00007f322bff3b2c in QApplicationPrivate::notify_helper (this=0x1b3ab10, receiver=0x2623ff0, e=0x7ffc6d134300) at kernel/qapplication.cpp:3720
#70 0x00007f322bff9000 in QApplication::notify (this=0x7ffc6d134700, receiver=0x2623ff0, e=0x7ffc6d134300) at kernel/qapplication.cpp:3503
#71 0x00007f322b207c2b in QCoreApplication::notifyInternal (this=0x7ffc6d134700, receiver=receiver@entry=0x2623ff0, event=event@entry=0x7ffc6d134300) at kernel/qcoreapplication.cpp:935
#72 0x00007f322ba37f41 in sendSpontaneousEvent (event=0x7ffc6d134300, receiver=0x2623ff0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#73 QGuiApplicationPrivate::processExposeEvent (e=0x25df270) at kernel/qguiapplication.cpp:2602
#74 0x00007f322ba38bbd in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x25df270) at kernel/qguiapplication.cpp:1638
#75 0x00007f322ba1d34f in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:572
#76 0x00007f321feb7590 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#77 0x00007f322765dc3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#78 0x00007f322765df20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#79 0x00007f322765dfcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#80 0x00007f322b260c57 in QEventDispatcherGlib::processEvents (this=0x1b77890, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#81 0x00007f322b2053e2 in QEventLoop::exec (this=this@entry=0x7ffc6d1345e0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#82 0x00007f322b20d02c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#83 0x00007f322ba2e31c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#84 0x00007f322bfef7a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#85 0x000000000040ef6b in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:55

Reported using DrKonqi