Application: systemsettings5 (5.3.1)

Qt Version: 5.4.1
Operating System: Linux 4.0.4-gentoo x86_64
Distribution: "Gentoo Base System release 2.2"

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

I changed the Compositor settings and then closed System Settings.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff5f5766780 (LWP 28697))]

Thread 3 (Thread 0x7ff5f1dcf700 (LWP 28698)):
#0  0x000000319ac0c84f in pthread_cond_wait () from /lib64/libpthread.so.0
#1  0x00007ff5f4622913 in cnd_wait (mtx=0x7f1038, cond=0x7f1060) at /var/tmp/portage/media-libs/mesa-10.5.6/work/mesa-10.5.6/include/c11/threads_posix.h:154
#2  pipe_semaphore_wait (sema=0x7f1038) at /var/tmp/portage/media-libs/mesa-10.5.6/work/mesa-10.5.6/src/gallium/auxiliary/os/os_thread.h:248
#3  radeon_drm_cs_emit_ioctl (param=param@entry=0x7f0d20) at /var/tmp/portage/media-libs/mesa-10.5.6/work/mesa-10.5.6/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c:594
#4  0x00007ff5f462206f in impl_thrd_routine (p=<optimized out>) at /var/tmp/portage/media-libs/mesa-10.5.6/work/mesa-10.5.6/include/c11/threads_posix.h:87
#5  0x000000319ac072f6 in start_thread () from /lib64/libpthread.so.0
#6  0x000000319a4eabdd in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7ff5f13c9700 (LWP 28699)):
#0  0x000000319a4e1c8d in poll () from /lib64/libc.so.6
#1  0x0000003160e0aa0a in ?? () from /usr/lib64/libxcb.so.1
#2  0x0000003160e0c5b7 in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007ff5f51f5979 in QXcbEventReader::run (this=0x8162a0) at qxcbconnection.cpp:1099
#4  0x0000003babca5182 in QThreadPrivate::start (arg=0x8162a0) at thread/qthread_unix.cpp:337
#5  0x000000319ac072f6 in start_thread () from /lib64/libpthread.so.0
#6  0x000000319a4eabdd in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7ff5f5766780 (LWP 28697)):
[KCrash Handler]
#5  data (this=0xb9) at /usr/include/qt5/QtCore/qscopedpointer.h:135
#6  qGetPtrHelper<QScopedPointer<QObjectData> > (p=...) at /usr/include/qt5/QtCore/qglobal.h:961
#7  d_func (this=0xb1) at items/qquickwindow.h:66
#8  QQuickWindow::maybeUpdate (this=0xb1) at items/qquickwindow.cpp:2890
#9  0x0000003bb3b9d039 in QQuickWindowPrivate::dirtyItem (this=<optimized out>) at items/qquickwindow.cpp:928
#10 0x0000003bb3b889bd in QQuickItemPrivate::addToDirtyList (this=<optimized out>) at items/qquickitem.cpp:5637
#11 0x0000003bb3b88a40 in QQuickItemPrivate::dirty (this=0xf27c60, type=<optimized out>) at items/qquickitem.cpp:5618
#12 0x0000003bb3b892de in QQuickItem::update (this=<optimized out>) at items/qquickitem.cpp:4097
#13 0x0000003bb3b92ee5 in QQuickItem::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qquickitem.cpp:595
#14 0x0000003babec93ee in QObject::event (this=this@entry=0xf27be0, e=e@entry=0x7ff5d8048c80) at kernel/qobject.cpp:1245
#15 0x0000003bb3b91b3b in QQuickItem::event (this=0xf27be0, ev=0x7ff5d8048c80) at items/qquickitem.cpp:7305
#16 0x0000003ba9b5bb0c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#17 0x0000003ba9b60f88 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#18 0x0000003babe9829b in QCoreApplication::notifyInternal (this=0x7ffe91c54650, receiver=0xf27be0, event=event@entry=0x7ff5d8048c80) at kernel/qcoreapplication.cpp:935
#19 0x0000003babe9a34a in sendEvent (event=0x7ff5d8048c80, receiver=<optimized out>) at kernel/qcoreapplication.h:228
#20 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x7c2d60) at kernel/qcoreapplication.cpp:1552
#21 0x0000003babe9a9aa in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#22 0x0000003babef02a3 in postEventSourceDispatch (s=0x84e800) at kernel/qeventdispatcher_glib.cpp:271
#23 0x0000003dbcc4ab14 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#24 0x0000003dbcc4adf5 in ?? () from /usr/lib64/libglib-2.0.so.0
#25 0x0000003dbcc4aeb4 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#26 0x0000003babef06b4 in QEventDispatcherGlib::processEvents (this=0x8423d0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#27 0x0000003babe95b02 in QEventLoop::exec (this=this@entry=0x7ffe91c54510, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#28 0x0000003babe9d714 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#29 0x000000000040f4d2 in main ()

Reported using DrKonqi