Bug 353046

Application: systemsettings5 (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-28-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
- What I was doing when the application crashed:

On a fresh install, I was attempting to modify the window decorations. Upon selecting the option under System Settings > Application Style > Window Decorations, the app crashes. This happens consistently; I reinstalled, and have encountered the same problem again with both KWin and Compiz.

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 0x7f862c8df780 (LWP 31729))]

Thread 4 (Thread 0x7f861c064700 (LWP 31730)):
#0  0x00007f862904f8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8627369b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f862736b64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f861e5af099 in QXcbEventReader::run (this=0x1684cc0) at qxcbconnection.cpp:1105
#4  0x00007f86296d0b0e in QThreadPrivate::start (arg=0x1684cc0) at thread/qthread_unix.cpp:337
#5  0x00007f86262836aa in start_thread (arg=0x7f861c064700) at pthread_create.c:333
#6  0x00007f862905aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f860ba55700 (LWP 31732)):
#0  0x00007f862904f8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8625d64ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8625d64fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8629967c6c in QEventDispatcherGlib::processEvents (this=0x7f86040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f862990c3e2 in QEventLoop::exec (this=this@entry=0x7f860ba54e20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f86296cbb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f8628696f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f86296d0b0e in QThreadPrivate::start (arg=0x20bd1a0) at thread/qthread_unix.cpp:337
#8  0x00007f86262836aa in start_thread (arg=0x7f860ba55700) at pthread_create.c:333
#9  0x00007f862905aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f8603fff700 (LWP 31733)):
#0  0x00007f8625da97a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8625d643f0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8625d64de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8625d64fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8629967c6c in QEventDispatcherGlib::processEvents (this=0x7f85fc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f862990c3e2 in QEventLoop::exec (this=this@entry=0x7f8603ffee20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f86296cbb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f8628696f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f86296d0b0e in QThreadPrivate::start (arg=0x24327c0) at thread/qthread_unix.cpp:337
#9  0x00007f86262836aa in start_thread (arg=0x7f8603fff700) at pthread_create.c:333
#10 0x00007f862905aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f862c8df780 (LWP 31729)):
[KCrash Handler]
#6  0x0000000001c7f790 in ?? ()
#7  0x00007f860c1276e1 in KDecoration2::Decoration::update(QRect const&) () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#8  0x00007f860c12775b in KDecoration2::Decoration::update() () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#9  0x00007f860884b370 in Breeze::Decoration::setOpacity (this=this@entry=0x23dfcf0, value=<optimized out>) at ../../kdecoration/breezedecoration.cpp:92
#10 0x00007f860886b7a8 in Breeze::Decoration::qt_metacall (this=0x23dfcf0, _c=QMetaObject::WriteProperty, _id=0, _a=0x7ffe9c193030) at moc_breezedecoration.cpp:146
#11 0x00007f86296b15ca in updateProperty (newValue=..., this=0x23e1760) at animation/qpropertyanimation.cpp:135
#12 QPropertyAnimation::updateCurrentValue (this=<optimized out>, value=...) at animation/qpropertyanimation.cpp:242
#13 0x00007f86296acf48 in QVariantAnimationPrivate::setCurrentValueForProgress (this=this@entry=0x23e1760, progress=progress@entry=0.98497777777777773) at animation/qvariantanimation.cpp:290
#14 0x00007f86296add1b in recalculateCurrentInterval (force=false, this=0x23e1760) at animation/qvariantanimation.cpp:275
#15 QVariantAnimation::updateCurrentTime (this=<optimized out>) at animation/qvariantanimation.cpp:693
#16 0x00007f86296a9baf in QAbstractAnimation::setCurrentTime (this=0x23c1610, msecs=137) at animation/qabstractanimation.cpp:1321
#17 0x00007f86296a9e96 in updateAnimationsTime (delta=13, this=0x17864b0) at animation/qabstractanimation.cpp:606
#18 QUnifiedTimer::updateAnimationTimers (this=0x1da3f90) at animation/qabstractanimation.cpp:323
#19 0x00007f86286d1a5e in QAbstractAnimationJob::setState(QAbstractAnimationJob::State) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x00007f86281eedac in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007f8628249244 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007f86281f7ea3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#23 0x00007f8628155dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#24 0x00007f862815a1ae in QQuickItem::setWidth(double) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#25 0x00007f8628166be6 in QQuickItem::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#26 0x00007f8628610ba7 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 0x00007f862868551c in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#28 0x00007f8628685c7e in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#29 0x00007f862865f497 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#30 0x00007f862865f45e in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#31 0x00007f86285fc10c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#32 0x00007f862993f141 in QMetaObject::activate (sender=0x2225630, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3603
#33 0x00007f8628155e39 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#34 0x00007f86281ededc in QQuickFlickable::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#35 0x00007f862815ac60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#36 0x00007f8628150a8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#37 0x00007f86281529a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#38 0x00007f8628155dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#39 0x00007f862815ac60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#40 0x00007f8628150a8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#41 0x00007f86281529a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#42 0x00007f8628155dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#43 0x00007f862815ac60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#44 0x00007f8628150a8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#45 0x00007f86281529a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#46 0x00007f8628155dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#47 0x00007f862815ac60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#48 0x00007f8628150a8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#49 0x00007f86281529a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#50 0x00007f8628155dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#51 0x00007f862815ac60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#52 0x00007f8628150a8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#53 0x00007f86281529a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#54 0x00007f8628155dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#55 0x00007f862815ac60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#56 0x00007f860a8b3798 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#57 0x00007f862a41a186 in QGridLayoutEngine::setGeometries (this=0x222a538, contentsGeometry=..., styleInfo=<optimized out>) at util/qgridlayoutengine.cpp:1015
#58 0x00007f860a8b2f0f in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#59 0x00007f860a8b34c7 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Layouts/libqquicklayoutsplugin.so
#60 0x00007f862815ac60 in QQuickItem::setSize(QSizeF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#61 0x00007f8628150a8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#62 0x00007f86281529a2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#63 0x00007f8628155dd3 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#64 0x00007f862815a4fe in QQuickItem::setHeight(double) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#65 0x00007f8628220d8f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#66 0x00007f8628222442 in QQuickView::resizeEvent(QResizeEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#67 0x00007f862a1467b5 in QWindow::event (this=0x20909f0, ev=<optimized out>) at kernel/qwindow.cpp:2051
#68 0x00007f8628179dd3 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#69 0x00007f862a6fab2c in QApplicationPrivate::notify_helper (this=0x166db10, receiver=0x20909f0, e=0x7ffe9c194a40) at kernel/qapplication.cpp:3720
#70 0x00007f862a700000 in QApplication::notify (this=0x7ffe9c194e40, receiver=0x20909f0, e=0x7ffe9c194a40) at kernel/qapplication.cpp:3503
#71 0x00007f862990ec2b in QCoreApplication::notifyInternal (this=0x7ffe9c194e40, receiver=receiver@entry=0x20909f0, event=event@entry=0x7ffe9c194a40) at kernel/qcoreapplication.cpp:935
#72 0x00007f862a13ef41 in sendSpontaneousEvent (event=0x7ffe9c194a40, receiver=0x20909f0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#73 QGuiApplicationPrivate::processExposeEvent (e=0x241fba0) at kernel/qguiapplication.cpp:2602
#74 0x00007f862a13fbbd in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x241fba0) at kernel/qguiapplication.cpp:1638
#75 0x00007f862a12434f in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:572
#76 0x00007f861e5d9590 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#77 0x00007f8625d64c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#78 0x00007f8625d64f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#79 0x00007f8625d64fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#80 0x00007f8629967c57 in QEventDispatcherGlib::processEvents (this=0x16ad850, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#81 0x00007f862990c3e2 in QEventLoop::exec (this=this@entry=0x7ffe9c194d20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#82 0x00007f862991402c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#83 0x00007f862a13531c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#84 0x00007f862a6f67a5 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