Bug 346461

Application: systemsettings5 (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-10-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
I changed the window decorations to something other than "breeze" and now every time I open the window decorations tab in the appearance settings I get a segmentation fault. If you can tell me how to see which decorations I have selected then I can provide that information if relevant.

This is on Kubuntu 15.04 so that could also be the issue.

-- 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 0x7efdbb395780 (LWP 2420))]

Thread 4 (Thread 0x7efdaab0f700 (LWP 2429)):
#0  0x00007efdb7afa8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007efdb5e14b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007efdb5e1664f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007efdad05a099 in QXcbEventReader::run (this=0x14ea620) at qxcbconnection.cpp:1105
#4  0x00007efdb817bb0e in QThreadPrivate::start (arg=0x14ea620) at thread/qthread_unix.cpp:337
#5  0x00007efdb4d2e6aa in start_thread (arg=0x7efdaab0f700) at pthread_create.c:333
#6  0x00007efdb7b05eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7efd9a82c700 (LWP 2492)):
#0  0x00007efdb48547a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007efdb480feb1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efdb480ffcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efdb8412c6c in QEventDispatcherGlib::processEvents (this=0x7efd940008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007efdb83b73e2 in QEventLoop::exec (this=this@entry=0x7efd9a82be20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007efdb8176b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007efdb7141f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007efdb817bb0e in QThreadPrivate::start (arg=0x1f3eb60) at thread/qthread_unix.cpp:337
#8  0x00007efdb4d2e6aa in start_thread (arg=0x7efd9a82c700) at pthread_create.c:333
#9  0x00007efdb7b05eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7efd931d8700 (LWP 2493)):
#0  0x00007efdb7afa8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007efdb480febc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efdb480ffcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efdb8412c6c in QEventDispatcherGlib::processEvents (this=0x7efd8c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007efdb83b73e2 in QEventLoop::exec (this=this@entry=0x7efd931d7e20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007efdb8176b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007efdb7141f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007efdb817bb0e in QThreadPrivate::start (arg=0x22e8400) at thread/qthread_unix.cpp:337
#8  0x00007efdb4d2e6aa in start_thread (arg=0x7efd931d8700) at pthread_create.c:333
#9  0x00007efdb7b05eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7efdbb395780 (LWP 2420)):
[KCrash Handler]
#6  0x00000000024da9a0 in ?? ()
#7  0x00007efd9aefe6e1 in KDecoration2::Decoration::update(QRect const&) () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#8  0x00007efd9aefe75b in KDecoration2::Decoration::update() () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#9  0x00007efd93495370 in Breeze::Decoration::setOpacity (this=this@entry=0x2299660, value=<optimized out>) at ../../kdecoration/breezedecoration.cpp:92
#10 0x00007efd934b57a8 in Breeze::Decoration::qt_metacall (this=0x2299660, _c=QMetaObject::WriteProperty, _id=0, _a=0x7ffe4ef6e410) at moc_breezedecoration.cpp:146
#11 0x00007efdb815c5ca in updateProperty (newValue=..., this=0x22a27f0) at animation/qpropertyanimation.cpp:135
#12 QPropertyAnimation::updateCurrentValue (this=<optimized out>, value=...) at animation/qpropertyanimation.cpp:242
#13 0x00007efdb8157f48 in QVariantAnimationPrivate::setCurrentValueForProgress (this=this@entry=0x22a27f0, progress=progress@entry=0.99564444444444444) at animation/qvariantanimation.cpp:290
#14 0x00007efdb8158d1b in recalculateCurrentInterval (force=false, this=0x22a27f0) at animation/qvariantanimation.cpp:275
#15 QVariantAnimation::updateCurrentTime (this=<optimized out>) at animation/qvariantanimation.cpp:693
#16 0x00007efdb8154baf in QAbstractAnimation::setCurrentTime (this=0x229a2e0, msecs=143) at animation/qabstractanimation.cpp:1321
#17 0x00007efdb8154e96 in updateAnimationsTime (delta=7, this=0x15faca0) at animation/qabstractanimation.cpp:606
#18 QUnifiedTimer::updateAnimationTimers (this=0x1bf1ca0) at animation/qabstractanimation.cpp:323
#19 0x00007efdb717ca5e in QAbstractAnimationJob::setState(QAbstractAnimationJob::State) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x00007efdb6c99dac in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007efdb6cf4244 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007efdb6ca2ea3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#23 0x00007efdb6c00dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#24 0x00007efdb6c051ae in QQuickItem::setWidth(double) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#25 0x00007efdb6c11be6 in QQuickItem::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#26 0x00007efdb70bbba7 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 0x00007efdb713051c in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#28 0x00007efdb7130c7e in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#29 0x00007efdb710a497 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#30 0x00007efdb710a45e in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#31 0x00007efdb70a710c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#32 0x00007efdb83ea141 in QMetaObject::activate (sender=0x20e2020, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3603
#33 0x00007efdb6c00e39 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#34 0x00007efdb6c98edc in QQuickFlickable::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#35 0x00007efdb6c05c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#36 0x00007efdb6bfba8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#37 0x00007efdb6bfd9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#38 0x00007efdb6c00dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#39 0x00007efdb6c05c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#40 0x00007efdb6bfba8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#41 0x00007efdb6bfd9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#42 0x00007efdb6c00dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#43 0x00007efdb6c05c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#44 0x00007efdb6bfba8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#45 0x00007efdb6bfd9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#46 0x00007efdb6c00dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#47 0x00007efdb6c05c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#48 0x00007efdb6bfba8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#49 0x00007efdb6bfd9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#50 0x00007efdb6c00dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#51 0x00007efdb6c05c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#52 0x00007efdb6bfba8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#53 0x00007efdb6bfd9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#54 0x00007efdb6c00dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#55 0x00007efdb6c05c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#56 0x00007efd9963a798 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#57 0x00007efdb8ec5186 in QGridLayoutEngine::setGeometries (this=0x20dc588, contentsGeometry=..., styleInfo=<optimized out>) at util/qgridlayoutengine.cpp:1015
#58 0x00007efd99639f0f in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#59 0x00007efd9963a4c7 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#60 0x00007efdb6c05c60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#61 0x00007efdb6bfba8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#62 0x00007efdb6bfd9a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#63 0x00007efdb6c00dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#64 0x00007efdb6c054fe in QQuickItem::setHeight(double) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#65 0x00007efdb6ccbd8f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#66 0x00007efdb6ccd442 in QQuickView::resizeEvent(QResizeEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#67 0x00007efdb8bf17b5 in QWindow::event (this=0x1f3abd0, ev=<optimized out>) at kernel/qwindow.cpp:2051
#68 0x00007efdb6c24dd3 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#69 0x00007efdb91a5b2c in QApplicationPrivate::notify_helper (this=0x14d3b10, receiver=0x1f3abd0, e=0x7ffe4ef6fe20) at kernel/qapplication.cpp:3720
#70 0x00007efdb91ab000 in QApplication::notify (this=0x7ffe4ef70220, receiver=0x1f3abd0, e=0x7ffe4ef6fe20) at kernel/qapplication.cpp:3503
#71 0x00007efdb83b9c2b in QCoreApplication::notifyInternal (this=0x7ffe4ef70220, receiver=receiver@entry=0x1f3abd0, event=event@entry=0x7ffe4ef6fe20) at kernel/qcoreapplication.cpp:935
#72 0x00007efdb8be9f41 in sendSpontaneousEvent (event=0x7ffe4ef6fe20, receiver=0x1f3abd0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#73 QGuiApplicationPrivate::processExposeEvent (e=0x22c8e50) at kernel/qguiapplication.cpp:2602
#74 0x00007efdb8beabbd in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x22c8e50) at kernel/qguiapplication.cpp:1638
#75 0x00007efdb8bcf34f in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:572
#76 0x00007efdad084590 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#77 0x00007efdb480fc3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#78 0x00007efdb480ff20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#79 0x00007efdb480ffcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#80 0x00007efdb8412c57 in QEventDispatcherGlib::processEvents (this=0x15107f0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#81 0x00007efdb83b73e2 in QEventLoop::exec (this=this@entry=0x7ffe4ef70100, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#82 0x00007efdb83bf02c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#83 0x00007efdb8be031c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#84 0x00007efdb91a17a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#85 0x000000000040eebc in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:54

Reported using DrKonqi