Application: plasmashell (5.4.2)

Qt Version: 5.5.0
Operating System: Linux 4.1.12-1-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
After user switch plasma was crashed

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 0x7f3d6e9db800 (LWP 10936))]

Thread 8 (Thread 0x7f3d569e7700 (LWP 10938)):
#0  0x00007f3d67ee4c1d in poll () at /lib64/libc.so.6
#1  0x00007f3d6ce4b422 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f3d6ce4d00f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f3d5919fc29 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f3d685e255f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f3d676e00a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f3d67eed04d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f3d4f5ef700 (LWP 10944)):
#0  0x00007f3d645b5cf9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f3d64573e16 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f3d64573f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f3d68813a5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f3d687baa63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f3d685dd84a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f3d6b8e85f8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f3d685e255f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f3d676e00a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f3d67eed04d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f3d43aa7700 (LWP 10951)):
#0  0x00007f3d67ee4c1d in poll () at /lib64/libc.so.6
#1  0x00007f3d64573e64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f3d64573f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f3d68813a5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f3d687baa63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f3d685dd84a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f3d6b8e85f8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f3d685e255f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f3d676e00a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f3d67eed04d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f3d42057700 (LWP 10954)):
#0  0x00007f3d645734b4 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f3d64573d80 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f3d64573f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f3d68813a5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f3d687baa63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f3d685dd84a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f3d6b8e85f8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f3d685e255f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f3d676e00a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f3d67eed04d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f3d3bfff700 (LWP 10957)):
#0  0x00007f3d676e405f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f3d6e0bb7eb in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f3d6e0bb819 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f3d676e00a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f3d67eed04d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f3d3997f700 (LWP 10959)):
#0  0x00007f3d645b5d14 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f3d64573d73 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f3d64573f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f3d68813a5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f3d687baa63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f3d685dd84a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f3d6c482f82 in  () at /usr/lib64/libQt5Quick.so.5
#7  0x00007f3d685e255f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f3d676e00a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f3d67eed04d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f3d38a0b700 (LWP 10962)):
[KCrash Handler]
#6  0x00007f3d67e8bc61 in __strstr_sse2 () at /lib64/libc.so.6
#7  0x00007f3d6c4d859a in QSGRenderContext::initialize(QOpenGLContext*) () at /usr/lib64/libQt5Quick.so.5
#8  0x00007f3d6c4f60a1 in  () at /usr/lib64/libQt5Quick.so.5
#9  0x00007f3d685e255f in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f3d676e00a4 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f3d67eed04d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f3d6e9db800 (LWP 10936)):
#0  0x00007f3d676e405f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f3d685e357b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f3d6c4f727e in  () at /usr/lib64/libQt5Quick.so.5
#3  0x00007f3d6c4f9272 in  () at /usr/lib64/libQt5Quick.so.5
#4  0x00007f3d6c4f98db in  () at /usr/lib64/libQt5Quick.so.5
#5  0x00007f3d68d1c5b9 in QWindow::event(QEvent*) () at /usr/lib64/libQt5Gui.so.5
#6  0x00007f3d6c52a8b1 in QQuickWindow::event(QEvent*) () at /usr/lib64/libQt5Quick.so.5
#7  0x00000000004408b6 in DesktopView::event(QEvent*) ()
#8  0x00007f3d69b4be8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#9  0x00007f3d69b50cd8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#10 0x00007f3d687bcba5 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f3d68d15024 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib64/libQt5Gui.so.5
#12 0x00007f3d68d15c3d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib64/libQt5Gui.so.5
#13 0x00007f3d68cfad68 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Gui.so.5
#14 0x00007f3d591caf20 in  () at /usr/lib64/libQt5XcbQpa.so.5
#15 0x00007f3d64573c84 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#16 0x00007f3d64573ed8 in  () at /usr/lib64/libglib-2.0.so.0
#17 0x00007f3d64573f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#18 0x00007f3d68813a3c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#19 0x00007f3d687baa63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#20 0x00007f3d687c25d6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#21 0x000000000043467b in main ()

Reported using DrKonqi