Application: systemsettings5 (5.4.1)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-25-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
The application crashes when I try to change the window decorations.

The crash can be reproduced sometimes.

-- 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 0x7f1791f6a800 (LWP 13344))]

Thread 4 (Thread 0x7f1780ae9700 (LWP 13345)):
#0  0x00007f178e7128dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f178c422bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f178c42474f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f1783037a39 in QXcbEventReader::run (this=0x2484270) at qxcbconnection.cpp:1105
#4  0x00007f178ee052be in QThreadPrivate::start (arg=0x2484270) at thread/qthread_unix.cpp:337
#5  0x00007f178bbad6aa in start_thread (arg=0x7f1780ae9700) at pthread_create.c:333
#6  0x00007f178e71deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f17708bf700 (LWP 14575)):
#0  0x00007f178e7128dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f178b68e1ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f178b68e2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f178f03c29b in QEventDispatcherGlib::processEvents (this=0x7f176c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f178efe275a in QEventLoop::exec (this=this@entry=0x7f17708beda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f178ee003d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f178d789f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f178ee052be in QThreadPrivate::start (arg=0x2af6a10) at thread/qthread_unix.cpp:337
#8  0x00007f178bbad6aa in start_thread (arg=0x7f17708bf700) at pthread_create.c:333
#9  0x00007f178e71deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f1768b28700 (LWP 14663)):
#0  0x00007f178eddc500 in g_main_context_iteration@plt () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f178f03c29b in QEventDispatcherGlib::processEvents (this=0x7f17640008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#2  0x00007f178efe275a in QEventLoop::exec (this=this@entry=0x7f1768b27da0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#3  0x00007f178ee003d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#4  0x00007f178d789f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#5  0x00007f178ee052be in QThreadPrivate::start (arg=0x2e1e5f0) at thread/qthread_unix.cpp:337
#6  0x00007f178bbad6aa in start_thread (arg=0x7f1768b28700) at pthread_create.c:333
#7  0x00007f178e71deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f1791f6a800 (LWP 13344)):
[KCrash Handler]
#6  0x00007f1770d08917 in KDecoration2::Decoration::update(QRect const&) () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#7  0x00007f1770d089bb in KDecoration2::Decoration::update() () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#8  0x00007f1769250275 in Oxygen::Decoration::setOpacity (this=this@entry=0x2d89f20, value=<optimized out>) at ../../kdecoration/oxygendecoration.cpp:94
#9  0x00007f176926a2c8 in Oxygen::Decoration::qt_metacall (this=0x2d89f20, _c=QMetaObject::WriteProperty, _id=0, _a=0x7fffc5e71a70) at moc_oxygendecoration.cpp:155
#10 0x00007f178ede630a in QPropertyAnimationPrivate::updateProperty (newValue=..., this=0x2dc8800) at animation/qpropertyanimation.cpp:135
#11 QPropertyAnimation::updateCurrentValue (this=<optimized out>, value=...) at animation/qpropertyanimation.cpp:242
#12 0x00007f178ede2318 in QVariantAnimationPrivate::setCurrentValueForProgress (this=this@entry=0x2dc8800, progress=progress@entry=0.91457777777777771) at animation/qvariantanimation.cpp:290
#13 0x00007f178ede2a17 in QVariantAnimationPrivate::recalculateCurrentInterval (this=0x2dc8800, force=<optimized out>) at animation/qvariantanimation.cpp:275
#14 0x00007f178eddf42f in QAbstractAnimation::setCurrentTime (this=0x2dbe120, msecs=119) at animation/qabstractanimation.cpp:1321
#15 0x00007f178eddf72d in QAnimationTimer::updateAnimationsTime (delta=31, this=0x2644160) at animation/qabstractanimation.cpp:606
#16 QUnifiedTimer::updateAnimationTimers (this=0x25f7b20) at animation/qabstractanimation.cpp:323
#17 0x00007f178d7c3909 in QAbstractAnimationJob::setState(QAbstractAnimationJob::State) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#18 0x00007f178daeab95 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007f178db3dbe4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007f178daf2743 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007f178da5413a in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007f178da58426 in QQuickItem::setWidth(double) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#23 0x00007f178da64807 in QQuickItem::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#24 0x00007f178d708475 in QQmlPropertyPrivate::writeBinding(QObject*, QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*, QV4::ValueRef, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#25 0x00007f178d7799ec in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#26 0x00007f178d77a14e in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#27 0x00007f178d754507 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#28 0x00007f178d7544ce in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#29 0x00007f178d6f40fc in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#30 0x00007f178f015090 in QMetaObject::activate (sender=0x2c02200, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3603
#31 0x00007f178da541c8 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#32 0x00007f178dae976c in QQuickFlickable::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#33 0x00007f178da58f24 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#34 0x00007f178da4f096 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#35 0x00007f178da50eb2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#36 0x00007f178da5413a in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#37 0x00007f178da58f24 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#38 0x00007f178da4f096 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#39 0x00007f178da50eb2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#40 0x00007f178da5413a in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#41 0x00007f178da58f24 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#42 0x00007f178da4f096 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#43 0x00007f178da50eb2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#44 0x00007f178da5413a in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#45 0x00007f178da58f24 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#46 0x00007f178da4f096 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#47 0x00007f178da50eb2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#48 0x00007f178da5413a in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#49 0x00007f178da58f24 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#50 0x00007f178da4f096 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#51 0x00007f178da50eb2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#52 0x00007f178da5413a in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#53 0x00007f178da58f24 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#54 0x00007f176b700d44 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#55 0x00007f179019361a in QGridLayoutEngine::setGeometries (this=0x2bfce08, contentsGeometry=..., styleInfo=<optimized out>) at util/qgridlayoutengine.cpp:1015
#56 0x00007f176b70019e in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#57 0x00007f176b700a67 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#58 0x00007f178da58f24 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#59 0x00007f178da4f096 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#60 0x00007f178da50eb2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#61 0x00007f178da5413a in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#62 0x00007f178da58796 in QQuickItem::setHeight(double) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#63 0x00007f178db19567 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#64 0x00007f178db1ae62 in QQuickView::resizeEvent(QResizeEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#65 0x00007f178fec57c5 in QWindow::event (this=0x2af54b0, ev=<optimized out>) at kernel/qwindow.cpp:2058
#66 0x00007f178da75fd3 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#67 0x00007f1790468b8c in QApplicationPrivate::notify_helper (this=this@entry=0x246c800, receiver=receiver@entry=0x2af54b0, e=e@entry=0x7fffc5e73640) at kernel/qapplication.cpp:3720
#68 0x00007f179046e230 in QApplication::notify (this=0x7fffc5e73a20, receiver=0x2af54b0, e=0x7fffc5e73640) at kernel/qapplication.cpp:3503
#69 0x00007f178efe4f1b in QCoreApplication::notifyInternal (this=0x7fffc5e73a20, receiver=receiver@entry=0x2af54b0, event=event@entry=0x7fffc5e73640) at kernel/qcoreapplication.cpp:935
#70 0x00007f178febe401 in QCoreApplication::sendSpontaneousEvent (event=0x7fffc5e73640, receiver=0x2af54b0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#71 QGuiApplicationPrivate::processExposeEvent (e=0x2aac5e0) at kernel/qguiapplication.cpp:2605
#72 0x00007f178febf07d in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x2aac5e0) at kernel/qguiapplication.cpp:1638
#73 0x00007f178fea45b8 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:572
#74 0x00007f1783064250 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#75 0x00007f178b68dff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#76 0x00007f178b68e250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#77 0x00007f178b68e2fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#78 0x00007f178f03c27f in QEventDispatcherGlib::processEvents (this=0x24b7ee0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#79 0x00007f178efe275a in QEventLoop::exec (this=this@entry=0x7fffc5e73900, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#80 0x00007f178efea2cc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#81 0x00007f178feb500c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#82 0x00007f1790465025 in QApplication::exec () at kernel/qapplication.cpp:2956
#83 0x000000000040f04b in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:55

Possible duplicates by query: bug 354712.

Reported using DrKonqi