Application: plasmashell (5.3.0)

Qt Version: 5.4.1
Operating System: Linux 3.16.7-21-desktop x86_64
Distribution: "openSUSE 13.2 (Harlequin) (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed: I had just finished rebooting the computer and logging in 

- Unusual behavior I noticed: The background on the login screen appears to flicker with white boxes. I think they are the crash dialogs

- Custom settings of the application: KDE logs me in on startup, then locks the session

Bug 348464 may be related as both crashes happened at the same time, as far as I can tell

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f36a46227c0 (LWP 1857))]

Thread 4 (Thread 0x7f368ee61700 (LWP 1859)):
#0  0x00007f369e137c5d in poll () at /lib64/libc.so.6
#1  0x00007f36a11c1322 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f36a11c2def in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f36911dfbd9 in  () at /usr/lib64/qt5/plugins/platforms/libqxcb.so
#4  0x00007f369e7b17cf in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f369d7f40a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f369e14008d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f368c951700 (LWP 1861)):
#0  0x00007f369e137c5d in poll () at /lib64/libc.so.6
#1  0x00007f369a5fabe4 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f369a5facec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f369e9e314b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f369e989d5b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f369e7acbaa in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f36a0a3d3f8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f369e7b17cf in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f369d7f40a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f369e14008d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f367b8c9700 (LWP 1863)):
#0  0x00007f369e137c5d in poll () at /lib64/libc.so.6
#1  0x00007f369a5fabe4 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f369a5facec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f369e9e314b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f369e989d5b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f369e7acbaa in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f36a0a3d3f8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f369e7b17cf in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f369d7f40a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f369e14008d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f36a46227c0 (LWP 1857)):
[KCrash Handler]
#5  0x00007f36a2307807 in  () at /usr/lib64/libKF5Activities.so.5
#6  0x00007f369e9bc456 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f369e7a9732 in QFutureWatcherBase::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f369f64bb5c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#9  0x00007f369f650a26 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#10 0x00007f369e98bdf5 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f369e98dc8f in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#12 0x00007f369e9e3cb3 in  () at /usr/lib64/libQt5Core.so.5
#13 0x00007f369a5faa04 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#14 0x00007f369a5fac48 in  () at /usr/lib64/libglib-2.0.so.0
#15 0x00007f369a5facec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#16 0x00007f369e9e312c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#17 0x00007f369e989d5b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#18 0x00007f369e9913c6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#19 0x0000000000432878 in main ()

Reported using DrKonqi