Application: systemsettings5 (5.2.2)

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

-- Information about the crash:
System settings always crash when I want to show windows decoration submenu.

The crash can be reproduced every time.

-- Backtrace:
Application: Nastavení systému (systemsettings5), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f0261294780 (LWP 25296))]

Thread 3 (Thread 0x7f024ea83700 (LWP 25297)):
#0  0x00007f025da008dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f025bd1ab72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f025bd1c64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f025183f099 in QXcbEventReader::run (this=0x1bc1a60) at qxcbconnection.cpp:1105
#4  0x00007f025e081b0e in QThreadPrivate::start (arg=0x1bc1a60) at thread/qthread_unix.cpp:337
#5  0x00007f025ac346aa in start_thread (arg=0x7f024ea83700) at pthread_create.c:333
#6  0x00007f025da0beed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f023f8f7700 (LWP 25345)):
#0  0x00007f025da008dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f025a715ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f025a715fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f025e318c6c in QEventDispatcherGlib::processEvents (this=0x7f02380008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f025e2bd3e2 in QEventLoop::exec (this=this@entry=0x7f023f8f6e20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f025e07cb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f025d047f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f025e081b0e in QThreadPrivate::start (arg=0x20064b0) at thread/qthread_unix.cpp:337
#8  0x00007f025ac346aa in start_thread (arg=0x7f023f8f7700) at pthread_create.c:333
#9  0x00007f025da0beed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f0261294780 (LWP 25296)):
[KCrash Handler]
#6  0x00007f025d93a267 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
#7  0x00007f025d93beca in __GI_abort () at abort.c:89
#8  0x00007f025e06eedf in qt_message_fatal (context=..., message=...) at global/qlogging.cpp:1415
#9  QMessageLogger::fatal (this=0x7fff48e8e710, msg=<optimized out>) at global/qlogging.cpp:636
#10 0x00007f025caef791 in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f025caf906f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f025caf930a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f025eaf77b5 in QWindow::event (this=0x2016050, ev=<optimized out>) at kernel/qwindow.cpp:2051
#14 0x00007f025cb2add3 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f025f0abb2c in QApplicationPrivate::notify_helper (this=0x1b94550, receiver=0x2016050, e=0x7fff48e8eb90) at kernel/qapplication.cpp:3720
#16 0x00007f025f0b1000 in QApplication::notify (this=0x7fff48e8ef90, receiver=0x2016050, e=0x7fff48e8eb90) at kernel/qapplication.cpp:3503
#17 0x00007f025e2bfc2b in QCoreApplication::notifyInternal (this=0x7fff48e8ef90, receiver=receiver@entry=0x2016050, event=event@entry=0x7fff48e8eb90) at kernel/qcoreapplication.cpp:935
#18 0x00007f025eaefe86 in sendSpontaneousEvent (event=0x7fff48e8eb90, receiver=0x2016050) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#19 QGuiApplicationPrivate::processExposeEvent (e=0x230da80) at kernel/qguiapplication.cpp:2613
#20 0x00007f025eaf0bbd in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x230da80) at kernel/qguiapplication.cpp:1638
#21 0x00007f025ead534f in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:572
#22 0x00007f0251869590 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#23 0x00007f025a715c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f025a715f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f025a715fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f025e318c57 in QEventDispatcherGlib::processEvents (this=0x1c00fb0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#27 0x00007f025e2bd3e2 in QEventLoop::exec (this=this@entry=0x7fff48e8ee70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#28 0x00007f025e2c502c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#29 0x000000000040eebc in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:44

Reported using DrKonqi