Application: systemsettings5 (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-15-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
The systems settings program crashses consistently when I try to select the Window Decorations tab. I tried 4 times and it crashed each time.

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 0x7fb910202780 (LWP 27006))]

Thread 4 (Thread 0x7fb8fda0d700 (LWP 27007)):
#0  0x00007fb90c9898dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fb90aca3b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fb90aca564f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fb9007e4099 in QXcbEventReader::run (this=0xffea20) at qxcbconnection.cpp:1105
#4  0x00007fb90d00ab0e in QThreadPrivate::start (arg=0xffea20) at thread/qthread_unix.cpp:337
#5  0x00007fb909bbd6aa in start_thread (arg=0x7fb8fda0d700) at pthread_create.c:333
#6  0x00007fb90c994eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fb8ee7ba700 (LWP 27008)):
#0  0x00007fb90c9898dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fb90969eebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb90969efcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb90d2a1c6c in QEventDispatcherGlib::processEvents (this=0x7fb8e80008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fb90d2463e2 in QEventLoop::exec (this=this@entry=0x7fb8ee7b9e20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fb90d005b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fb90bfd0f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fb90d00ab0e in QThreadPrivate::start (arg=0x1411970) at thread/qthread_unix.cpp:337
#8  0x00007fb909bbd6aa in start_thread (arg=0x7fb8ee7ba700) at pthread_create.c:333
#9  0x00007fb90c994eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fb8e6e82700 (LWP 27009)):
#0  __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:65
#1  0x00007fb90c9898d2 in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0x00007fb90969eebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb90969efcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb90d2a1c6c in QEventDispatcherGlib::processEvents (this=0x7fb8e00008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fb90d2463e2 in QEventLoop::exec (this=this@entry=0x7fb8e6e81e20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fb90d005b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fb90bfd0f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fb90d00ab0e in QThreadPrivate::start (arg=0x17853c0) at thread/qthread_unix.cpp:337
#9  0x00007fb909bbd6aa in start_thread (arg=0x7fb8e6e82700) at pthread_create.c:333
#10 0x00007fb90c994eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fb910202780 (LWP 27006)):
[KCrash Handler]
#6  0x00007fb90c8c3267 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
#7  0x00007fb90c8c4eca in __GI_abort () at abort.c:89
#8  0x00007fb90cff7edf in qt_message_fatal (context=..., message=...) at global/qlogging.cpp:1415
#9  QMessageLogger::fatal (this=0x7ffcb9c0f2f0, msg=<optimized out>) at global/qlogging.cpp:636
#10 0x00007fb90ba78791 in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007fb90ba8206f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007fb90ba8230a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007fb90da807b5 in QWindow::event (this=0x14c1310, ev=<optimized out>) at kernel/qwindow.cpp:2051
#14 0x00007fb90bab3dd3 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007fb90e034b2c in QApplicationPrivate::notify_helper (this=0xfd1530, receiver=0x14c1310, e=0x7ffcb9c0f770) at kernel/qapplication.cpp:3720
#16 0x00007fb90e03a000 in QApplication::notify (this=0x7ffcb9c0fb70, receiver=0x14c1310, e=0x7ffcb9c0f770) at kernel/qapplication.cpp:3503
#17 0x00007fb90d248c2b in QCoreApplication::notifyInternal (this=0x7ffcb9c0fb70, receiver=receiver@entry=0x14c1310, event=event@entry=0x7ffcb9c0f770) at kernel/qcoreapplication.cpp:935
#18 0x00007fb90da78e86 in sendSpontaneousEvent (event=0x7ffcb9c0f770, receiver=0x14c1310) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#19 QGuiApplicationPrivate::processExposeEvent (e=0x1a10530) at kernel/qguiapplication.cpp:2613
#20 0x00007fb90da79bbd in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x1a10530) at kernel/qguiapplication.cpp:1638
#21 0x00007fb90da5e34f in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:572
#22 0x00007fb90080e590 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#23 0x00007fb90969ec3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fb90969ef20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fb90969efcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007fb90d2a1c57 in QEventDispatcherGlib::processEvents (this=0x10440a0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#27 0x00007fb90d2463e2 in QEventLoop::exec (this=this@entry=0x7ffcb9c0fa50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#28 0x00007fb90d24e02c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#29 0x00007fb90da6f31c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#30 0x00007fb90e0307a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#31 0x000000000040eebc in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:54

Reported using DrKonqi