Application: systemsettings5 (5.3.0)
 (Compiled from sources)
Qt Version: 5.4.1
Operating System: Linux 3.19.0-15-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
- What I was doing when the application crashed: Trying to open Window Decorations in Application Style System Settings to change the decoration back to Breeze

- Custom settings of the application:

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 0x7faeb65db780 (LWP 7107))]

Thread 5 (Thread 0x7faea5d5f700 (LWP 7108)):
#0  0x00007faeb2d4a8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007faeb1064b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007faeb106664f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007faea82aa099 in QXcbEventReader::run (this=0x1e70ae0) at qxcbconnection.cpp:1105
#4  0x00007faeb33cbb0e in QThreadPrivate::start (arg=0x1e70ae0) at thread/qthread_unix.cpp:337
#5  0x00007faeaff7e6aa in start_thread (arg=0x7faea5d5f700) at pthread_create.c:333
#6  0x00007faeb2d55eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fae96a2f700 (LWP 7110)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fae99a6c4fb in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007fae99a6bc87 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007faeaff7e6aa in start_thread (arg=0x7fae96a2f700) at pthread_create.c:333
#4  0x00007faeb2d55eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fae92bd8700 (LWP 7144)):
#0  0x00007faeafaa47a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007faeafa5f3f0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faeafa5fde8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faeafa5ffcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007faeb3662c6c in QEventDispatcherGlib::processEvents (this=0x7fae8c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007faeb36073e2 in QEventLoop::exec (this=this@entry=0x7fae92bd7e20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007faeb33c6b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007faeb2391f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007faeb33cbb0e in QThreadPrivate::start (arg=0x202f7c0) at thread/qthread_unix.cpp:337
#9  0x00007faeaff7e6aa in start_thread (arg=0x7fae92bd8700) at pthread_create.c:333
#10 0x00007faeb2d55eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fae8b5f6700 (LWP 7146)):
#0  0x00007faeb2d4a8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007faeafa5febc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faeafa5ffcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faeb3662c6c in QEventDispatcherGlib::processEvents (this=0x7fae840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007faeb36073e2 in QEventLoop::exec (this=this@entry=0x7fae8b5f5e20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007faeb33c6b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007faeb2391f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007faeb33cbb0e in QThreadPrivate::start (arg=0x28fb6f0) at thread/qthread_unix.cpp:337
#8  0x00007faeaff7e6aa in start_thread (arg=0x7fae8b5f6700) at pthread_create.c:333
#9  0x00007faeb2d55eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7faeb65db780 (LWP 7107)):
[KCrash Handler]
#6  0x0000107100002400 in ?? ()
#7  0x00007fae930728d1 in KDecoration2::Decoration::update(QRect const&) () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#8  0x00007fae9307294b in KDecoration2::Decoration::update() () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#9  0x00007fae8b8b59e0 in Breeze::Decoration::setOpacity (this=this@entry=0x2743530, value=<optimized out>) at ../../kdecoration/breezedecoration.cpp:96
#10 0x00007fae8b8d7148 in Breeze::Decoration::qt_metacall (this=0x2743530, _c=QMetaObject::WriteProperty, _id=0, _a=0x7ffe2fcfedc0) at moc_breezedecoration.cpp:150
#11 0x00007faeb33ac5ca in updateProperty (newValue=..., this=0x2823d10) at animation/qpropertyanimation.cpp:135
#12 QPropertyAnimation::updateCurrentValue (this=<optimized out>, value=...) at animation/qpropertyanimation.cpp:242
#13 0x00007faeb33a7f48 in QVariantAnimationPrivate::setCurrentValueForProgress (this=this@entry=0x2823d10, progress=progress@entry=0.72124444444444447) at animation/qvariantanimation.cpp:290
#14 0x00007faeb33a8d1b in recalculateCurrentInterval (force=false, this=0x2823d10) at animation/qvariantanimation.cpp:275
#15 QVariantAnimation::updateCurrentTime (this=<optimized out>) at animation/qvariantanimation.cpp:693
#16 0x00007faeb33a4baf in QAbstractAnimation::setCurrentTime (this=0x27c4940, msecs=94) at animation/qabstractanimation.cpp:1321
#17 0x00007faeb33a4e96 in updateAnimationsTime (delta=56, this=0x2040560) at animation/qabstractanimation.cpp:606
#18 QUnifiedTimer::updateAnimationTimers (this=0x1fc7280) at animation/qabstractanimation.cpp:323
#19 0x00007faeb23cca5e in QAbstractAnimationJob::setState(QAbstractAnimationJob::State) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x00007faeb1ee9dac in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007faeb1f44244 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007faeb1ef2ea3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#23 0x00007faeb1e50dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#24 0x00007faeb1e551ae in QQuickItem::setWidth(double) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#25 0x00007faeb1e61be6 in QQuickItem::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#26 0x00007faeb230bba7 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 0x00007faeb238051c in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#28 0x00007faeb2380c7e in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#29 0x00007faeb235a497 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#30 0x00007faeb235a45e in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#31 0x00007faeb22f710c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#32 0x00007faeb363a141 in QMetaObject::activate (sender=0x2410460, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3603
#33 0x00007faeb1e50e39 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#34 0x00007faeb1ee8edc in QQuickFlickable::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#35 0x00007faeb1e55c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#36 0x00007faeb1e4ba8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#37 0x00007faeb1e4d9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#38 0x00007faeb1e50dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#39 0x00007faeb1e55c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#40 0x00007faeb1e4ba8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#41 0x00007faeb1e4d9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#42 0x00007faeb1e50dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#43 0x00007faeb1e55c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#44 0x00007faeb1e4ba8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#45 0x00007faeb1e4d9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#46 0x00007faeb1e50dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#47 0x00007faeb1e55c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#48 0x00007faeb1e4ba8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#49 0x00007faeb1e4d9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#50 0x00007faeb1e50dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#51 0x00007faeb1e55c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#52 0x00007faeb1e4ba8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#53 0x00007faeb1e4d9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#54 0x00007faeb1e50dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#55 0x00007faeb1e55c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#56 0x00007fae91a36798 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#57 0x00007faeb4115186 in QGridLayoutEngine::setGeometries (this=0x2419c08, contentsGeometry=..., styleInfo=<optimized out>) at util/qgridlayoutengine.cpp:1015
#58 0x00007fae91a35f0f in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#59 0x00007fae91a364c7 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#60 0x00007faeb1e55c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#61 0x00007faeb1e4ba8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#62 0x00007faeb1e4d9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#63 0x00007faeb1e50dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#64 0x00007faeb1e554fe in QQuickItem::setHeight(double) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#65 0x00007faeb1f1bd8f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#66 0x00007faeb1f1d442 in QQuickView::resizeEvent(QResizeEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#67 0x00007faeb3e417b5 in QWindow::event (this=0x2312e90, ev=<optimized out>) at kernel/qwindow.cpp:2051
#68 0x00007faeb1e74dd3 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#69 0x00007faeb43f5b2c in QApplicationPrivate::notify_helper (this=0x1e55b10, receiver=0x2312e90, e=0x7ffe2fd007d0) at kernel/qapplication.cpp:3720
#70 0x00007faeb43fb000 in QApplication::notify (this=0x7ffe2fd00bd0, receiver=0x2312e90, e=0x7ffe2fd007d0) at kernel/qapplication.cpp:3503
#71 0x00007faeb3609c2b in QCoreApplication::notifyInternal (this=0x7ffe2fd00bd0, receiver=receiver@entry=0x2312e90, event=event@entry=0x7ffe2fd007d0) at kernel/qcoreapplication.cpp:935
#72 0x00007faeb3e39f41 in sendSpontaneousEvent (event=0x7ffe2fd007d0, receiver=0x2312e90) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#73 QGuiApplicationPrivate::processExposeEvent (e=0x26f67f0) at kernel/qguiapplication.cpp:2602
#74 0x00007faeb3e3abbd in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x26f67f0) at kernel/qguiapplication.cpp:1638
#75 0x00007faeb3e1f34f in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:572
#76 0x00007faea82d4590 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#77 0x00007faeafa5fc3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#78 0x00007faeafa5ff20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#79 0x00007faeafa5ffcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#80 0x00007faeb3662c57 in QEventDispatcherGlib::processEvents (this=0x1e9ae80, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#81 0x00007faeb36073e2 in QEventLoop::exec (this=this@entry=0x7ffe2fd00ab0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#82 0x00007faeb360f02c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#83 0x00007faeb3e3031c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#84 0x00007faeb43f17a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#85 0x000000000040ef5b in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:55

Reported using DrKonqi