Application: systemsettings5 (5.3.0)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-16-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
- What I was doing when the application crashed:
Selected the following...
>system settings
>application style
>window decorations
... immediate crash

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 0x7f334cbce780 (LWP 2447))]

Thread 5 (Thread 0x7f333a3fa700 (LWP 2448)):
#0  0x00007f33493328dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f334764cb72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f334764e64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f333d18d099 in QXcbEventReader::run (this=0x2539950) at qxcbconnection.cpp:1105
#4  0x00007f33499b3b0e in QThreadPrivate::start (arg=0x2539950) at thread/qthread_unix.cpp:337
#5  0x00007f33465666aa in start_thread (arg=0x7f333a3fa700) at pthread_create.c:333
#6  0x00007f334933deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f332a5b2700 (LWP 2455)):
#0  0x00007f334608c7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f33460473f0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3346047de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3346047fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f3349c4ac6c in QEventDispatcherGlib::processEvents (this=0x7f33240008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f3349bef3e2 in QEventLoop::exec (this=this@entry=0x7f332a5b1e20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f33499aeb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f3348979f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f33499b3b0e in QThreadPrivate::start (arg=0x2e5df70) at thread/qthread_unix.cpp:337
#9  0x00007f33465666aa in start_thread (arg=0x7f332a5b2700) at pthread_create.c:333
#10 0x00007f334933deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f3322bb6700 (LWP 2456)):
#0  0x00007f334608c789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f3346047409 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3346047de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3346047fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f3349c4ac6c in QEventDispatcherGlib::processEvents (this=0x7f331c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f3349bef3e2 in QEventLoop::exec (this=this@entry=0x7f3322bb5e20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f33499aeb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f3348979f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f33499b3b0e in QThreadPrivate::start (arg=0x31422c0) at thread/qthread_unix.cpp:337
#9  0x00007f33465666aa in start_thread (arg=0x7f3322bb6700) at pthread_create.c:333
#10 0x00007f334933deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f331bfff700 (LWP 2457)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f33499b4c6b in wait (time=18446744073709551615, this=0x3109290) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x329df50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f3348425fab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f33484263a0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f33499b3b0e in QThreadPrivate::start (arg=0x329ded0) at thread/qthread_unix.cpp:337
#6  0x00007f33465666aa in start_thread (arg=0x7f331bfff700) at pthread_create.c:333
#7  0x00007f334933deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f334cbce780 (LWP 2447)):
[KCrash Handler]
#6  0x00007f332af438a7 in KDecoration2::Decoration::update(QRect const&) () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#7  0x00007f332af4394b in KDecoration2::Decoration::update() () from /usr/lib/x86_64-linux-gnu/libkdecorations2.so.5
#8  0x00007f3322e759e0 in Breeze::Decoration::setOpacity (this=this@entry=0x30b6a60, value=<optimized out>) at ../../kdecoration/breezedecoration.cpp:96
#9  0x00007f3322e97148 in Breeze::Decoration::qt_metacall (this=0x30b6a60, _c=QMetaObject::WriteProperty, _id=0, _a=0x7ffefa595120) at moc_breezedecoration.cpp:150
#10 0x00007f33499945ca in updateProperty (newValue=..., this=0x30b96f0) at animation/qpropertyanimation.cpp:135
#11 QPropertyAnimation::updateCurrentValue (this=<optimized out>, value=...) at animation/qpropertyanimation.cpp:242
#12 0x00007f334998ff48 in QVariantAnimationPrivate::setCurrentValueForProgress (this=this@entry=0x30b96f0, progress=progress@entry=0.96444444444444444) at animation/qvariantanimation.cpp:290
#13 0x00007f3349990d1b in recalculateCurrentInterval (force=false, this=0x30b96f0) at animation/qvariantanimation.cpp:275
#14 QVariantAnimation::updateCurrentTime (this=<optimized out>) at animation/qvariantanimation.cpp:693
#15 0x00007f334998cbaf in QAbstractAnimation::setCurrentTime (this=0x30d6f20, msecs=130) at animation/qabstractanimation.cpp:1321
#16 0x00007f334998ce96 in updateAnimationsTime (delta=20, this=0x26c21b0) at animation/qabstractanimation.cpp:606
#17 QUnifiedTimer::updateAnimationTimers (this=0x27e5670) at animation/qabstractanimation.cpp:323
#18 0x00007f334998d7dc in QAnimationDriver::advanceAnimation (this=<optimized out>, timeStep=-1) at animation/qabstractanimation.cpp:820
#19 0x00007f334840a1ee in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007f334842868a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007f334842aa8b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007f334842b30a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#23 0x00007f334a4297b5 in QWindow::event (this=0x2c25b50, ev=<optimized out>) at kernel/qwindow.cpp:2051
#24 0x00007f334845cdd3 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#25 0x00007f334a9ddb2c in QApplicationPrivate::notify_helper (this=0x250b550, receiver=0x2c25b50, e=0x7ffefa595880) at kernel/qapplication.cpp:3720
#26 0x00007f334a9e3000 in QApplication::notify (this=0x7ffefa595c80, receiver=0x2c25b50, e=0x7ffefa595880) at kernel/qapplication.cpp:3503
#27 0x00007f3349bf1c2b in QCoreApplication::notifyInternal (this=0x7ffefa595c80, receiver=receiver@entry=0x2c25b50, event=event@entry=0x7ffefa595880) at kernel/qcoreapplication.cpp:935
#28 0x00007f334a421e86 in sendSpontaneousEvent (event=0x7ffefa595880, receiver=0x2c25b50) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#29 QGuiApplicationPrivate::processExposeEvent (e=0x2a2dba0) at kernel/qguiapplication.cpp:2613
#30 0x00007f334a422bbd in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x2a2dba0) at kernel/qguiapplication.cpp:1638
#31 0x00007f334a40734f in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:572
#32 0x00007f333d1b7590 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#33 0x00007f3346047c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f3346047f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f3346047fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f3349c4ac57 in QEventDispatcherGlib::processEvents (this=0x2584d70, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#37 0x00007f3349bef3e2 in QEventLoop::exec (this=this@entry=0x7ffefa595b60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#38 0x00007f3349bf702c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#39 0x00007f334a41831c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#40 0x00007f334a9d97a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#41 0x000000000040ef5b in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:55

Reported using DrKonqi