Application: systemsettings5 (5.3.1)

Qt Version: 5.4.2
Operating System: Linux 3.19.0-22-generic x86_64
Distribution: Ubuntu Wily Werewolf (development branch)

-- Information about the crash:
- What I was doing when the application crashed:
System Settings crashes when opening Workspace Theme. Tried twice.

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f978d4fb780 (LWP 12423))]

Thread 3 (Thread 0x7f977ab05700 (LWP 12424)):
#0  0x00007f9789c5a8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f9787f6eb72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f9787f7064f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f977d89c0f9 in QXcbEventReader::run (this=0x21a5870) at qxcbconnection.cpp:1105
#4  0x00007f978a2ddc6e in QThreadPrivate::start (arg=0x21a5870) at thread/qthread_unix.cpp:337
#5  0x00007f9786e876aa in start_thread (arg=0x7f977ab05700) at pthread_create.c:333
#6  0x00007f9789c65eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f976c5b7700 (LWP 12522)):
#0  0x00007f9789c5a8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f9786967edc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9786967fec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f978a5752dc in QEventDispatcherGlib::processEvents (this=0x7f97640008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f978a519aa2 in QEventLoop::exec (this=this@entry=0x7f976c5b6e20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f978a2d8ca4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f97892a1195 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f978a2ddc6e in QThreadPrivate::start (arg=0x237fbd0) at thread/qthread_unix.cpp:337
#8  0x00007f9786e876aa in start_thread (arg=0x7f976c5b7700) at pthread_create.c:333
#9  0x00007f9789c65eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f978d4fb780 (LWP 12423)):
[KCrash Handler]
#6  0x00007f9789b94267 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
#7  0x00007f9789b95eca in __GI_abort () at abort.c:89
#8  0x00007f978a2caf9f in qt_message_fatal (context=..., message=...) at global/qlogging.cpp:1422
#9  QMessageLogger::fatal (this=0x7fffc1050cb0, msg=<optimized out>) at global/qlogging.cpp:643
#10 0x00007f9788d47d81 in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f9788d516af in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f9788d5194a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f978ad58785 in QWindow::event (this=0x25b3ab0, ev=<optimized out>) at kernel/qwindow.cpp:2058
#14 0x00007f9788d832c3 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007f978b30cadc in QApplicationPrivate::notify_helper (this=0x217a430, receiver=0x25b3ab0, e=0x7fffc1051130) at kernel/qapplication.cpp:3720
#16 0x00007f978b311fb0 in QApplication::notify (this=0x7fffc1051530, receiver=0x25b3ab0, e=0x7fffc1051130) at kernel/qapplication.cpp:3503
#17 0x00007f978a51c2eb in QCoreApplication::notifyInternal (this=0x7fffc1051530, receiver=receiver@entry=0x25b3ab0, event=event@entry=0x7fffc1051130) at kernel/qcoreapplication.cpp:935
#18 0x00007f978ad50e96 in sendSpontaneousEvent (event=0x7fffc1051130, receiver=0x25b3ab0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#19 QGuiApplicationPrivate::processExposeEvent (e=0x25a4fd0) at kernel/qguiapplication.cpp:2616
#20 0x00007f978ad51bcd in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x25a4fd0) at kernel/qguiapplication.cpp:1638
#21 0x00007f978ad3626f in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:572
#22 0x00007f977d8c6970 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#23 0x00007f9786967c5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f9786967f40 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f9786967fec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f978a5752c7 in QEventDispatcherGlib::processEvents (this=0x21ebeb0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#27 0x00007f978a519aa2 in QEventLoop::exec (this=this@entry=0x7fffc1051410, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#28 0x00007f978a5216ec in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#29 0x00007f978ad4721c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#30 0x00007f978b308745 in QApplication::exec () at kernel/qapplication.cpp:2956
#31 0x000000000040f08b in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:55

Reported using DrKonqi