Application: plasma-desktop (4.11.17)
KDE Platform Version: 4.14.6
Qt Version: 4.8.6
Operating System: Linux 3.16.7-21-default x86_64
Distribution: "openSUSE 13.2 (Harlequin) (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed: changed login screen from Steampunk to somethinig dull, got rid of extra kernels (still logged in recovery mode)

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5f480f4780 (LWP 8372))]

Thread 3 (Thread 0x7f5f16e8b700 (LWP 8377)):
#0  0x00007f5f469e505f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f5f3925f8cb in  () at /usr/lib64/libQtScript.so.4
#2  0x00007f5f3925f909 in  () at /usr/lib64/libQtScript.so.4
#3  0x00007f5f469e10a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f5f4574c06d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f5e8a38a700 (LWP 8381)):
#0  0x00007f5f45743c3d in poll () at /lib64/libc.so.6
#1  0x00007f5f42853be4 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f5f42853cec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f5f46da60de in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f5e840008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#4  0x00007f5f46d77e6f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f5e8a389e20, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f5f46d78165 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f5e8a389e20, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f5f46c750bf in QThread::exec() (this=this@entry=0x730b00) at thread/qthread.cpp:538
#7  0x00007f5f46d59783 in QInotifyFileSystemWatcherEngine::run() (this=0x730b00) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007f5f46c7779f in QThreadPrivate::start(void*) (arg=0x730b00) at thread/qthread_unix.cpp:349
#9  0x00007f5f469e10a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f5f4574c06d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f5f480f4780 (LWP 8372)):
[KCrash Handler]
#5  0x00007f5f46d7f83e in QMetaObject::cast(QObject*) const (this=0x7f5f3bdbe880 <Plasma::Extender::staticMetaObject>, obj=0x600000) at kernel/qmetaobject.cpp:274
#6  0x00007f5f3ba13b35 in  () at /usr/lib64/libplasma.so.3
#7  0x00007f5f3ba15ae3 in  () at /usr/lib64/libplasma.so.3
#8  0x00007f5f3b9bcf27 in  () at /usr/lib64/libplasma.so.3
#9  0x00007f5f1d0da4d6 in SystemTray::PlasmoidTask::forwardConstraintsEvent(QFlags<Plasma::Constraint>) () at /usr/lib64/kde4/plasma_applet_systemtray.so
#10 0x00007f5f1d0d90e1 in SystemTray::PlasmoidProtocol::forwardConstraintsEvent(QFlags<Plasma::Constraint>, Plasma::Applet*) () at /usr/lib64/kde4/plasma_applet_systemtray.so
#11 0x00007f5f1d0d1919 in SystemTray::Manager::forwardConstraintsEvent(QFlags<Plasma::Constraint>, Plasma::Applet*) () at /usr/lib64/kde4/plasma_applet_systemtray.so
#12 0x00007f5f1d0dfac1 in SystemTray::Applet::constraintsEvent(QFlags<Plasma::Constraint>) () at /usr/lib64/kde4/plasma_applet_systemtray.so
#13 0x00007f5f3b9bcf3d in  () at /usr/lib64/libplasma.so.3
#14 0x00007f5f3b9d9aa8 in  () at /usr/lib64/libplasma.so.3
#15 0x00007f5f3b9e68dc in  () at /usr/lib64/libplasma.so.3
#16 0x00007f5f3b9e72da in Plasma::Corona::loadLayout(QString const&) () at /usr/lib64/libplasma.so.3
#17 0x00007f5f3b9e7394 in Plasma::Corona::initializeLayout(QString const&) () at /usr/lib64/libplasma.so.3
#18 0x00007f5f306698f5 in PlasmaApp::corona(bool) () at /usr/lib64/libkdeinit4_plasma-desktop.so
#19 0x00007f5f30669f05 in PlasmaApp::setupDesktop() () at /usr/lib64/libkdeinit4_plasma-desktop.so
#20 0x00007f5f3066e235 in PlasmaApp::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [clone .part.73] () at /usr/lib64/libkdeinit4_plasma-desktop.so
#21 0x00007f5f46d9159e in QObject::event(QEvent*) (this=0x7defb0, e=<optimized out>) at kernel/qobject.cpp:1231
#22 0x00007f5f45efa783 in QApplication::event(QEvent*) () at /usr/lib64/libQtGui.so.4
#23 0x00007f5f45ef57bc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQtGui.so.4
#24 0x00007f5f45efbcfd in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQtGui.so.4
#25 0x00007f5f47b1ccea in KApplication::notify(QObject*, QEvent*) () at /usr/lib64/libkdeui.so.5
#26 0x00007f5f46d792ad in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7defb0, receiver=receiver@entry=0x7defb0, event=event@entry=0xa37d40) at kernel/qcoreapplication.cpp:953
#27 0x00007f5f46d7c57d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (event=0xa37d40, receiver=0x7defb0) at kernel/qcoreapplication.h:231
#28 0x00007f5f46d7c57d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x644490) at kernel/qcoreapplication.cpp:1577
#29 0x00007f5f46d7ca23 in QCoreApplication::sendPostedEvents(QObject*, int) (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#30 0x00007f5f46da68fe in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) () at kernel/qcoreapplication.h:236
#31 0x00007f5f46da68fe in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x884070) at kernel/qeventdispatcher_glib.cpp:300
#32 0x00007f5f42853a04 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#33 0x00007f5f42853c48 in  () at /usr/lib64/libglib-2.0.so.0
#34 0x00007f5f42853cec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#35 0x00007f5f46da60be in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7e8a50, flags=...) at kernel/qeventdispatcher_glib.cpp:450
#36 0x00007f5f45f926c6 in  () at /usr/lib64/libQtGui.so.4
#37 0x00007f5f46d77e6f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffd87275300, flags=...) at kernel/qeventloop.cpp:149
#38 0x00007f5f46d78165 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffd87275300, flags=...) at kernel/qeventloop.cpp:204
#39 0x00007f5f46d7d5b9 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1225
#40 0x00007f5f30654b94 in kdemain () at /usr/lib64/libkdeinit4_plasma-desktop.so
#41 0x0000000000408815 in _start ()

Reported using DrKonqi