Application: plasmashell (5.5.4)

Qt Version: 5.5.1
Operating System: Linux 4.4.1-gentoo x86_64
Distribution: "Gentoo Base System release 2.2"

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

Very rarely, when opening the application menu (fullscreen launcher), the plasma shell crashes. I can see the application launcher flashing (background will fade dark and blurs) but then the shell crashes and instantly reloads.

I'm using NVIDIA prop drivers with Gentoo provided packages (kde overlay).

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7fb11e6d7840 (LWP 16477))]

Thread 14 (Thread 0x7fb11d98e700 (LWP 16479)):
#0  0x00000039944dfc7d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x000000399700aac2 in poll (__timeout=-1, __nfds=1, __fds=0x7fb11d98dc80) at /usr/include/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x24ed650, cond=cond@entry=0x24ed690, vector=vector@entry=0x0, count=count@entry=0x0) at /var/tmp/portage/x11-libs/libxcb-1.11.1/work/libxcb-1.11.1/src/xcb_conn.c:459
#3  0x000000399700c72f in xcb_wait_for_event (c=0x24ed650) at /var/tmp/portage/x11-libs/libxcb-1.11.1/work/libxcb-1.11.1/src/xcb_in.c:693
#4  0x00007fb11e220c89 in QXcbEventReader::run (this=0x24fb800) at qxcbconnection.cpp:1229
#5  0x00000039a5ca04a2 in QThreadPrivate::start (arg=0x24fb800) at thread/qthread_unix.cpp:331
#6  0x0000003994c07324 in start_thread (arg=0x7fb11d98e700) at pthread_create.c:333
#7  0x00000039944e8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fb1175ef700 (LWP 16491)):
#0  0x000000399648e239 in g_mutex_lock (mutex=mutex@entry=0x7fb110000990) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gthread-posix.c:1336
#1  0x0000003996449c68 in g_main_context_iteration (context=0x7fb110000990, may_block=1) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gmain.c:3868
#2  0x00000039a5e9aebc in QEventDispatcherGlib::processEvents (this=0x7fb1100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#3  0x00000039a5e4c17a in QEventLoop::exec (this=this@entry=0x7fb1175eed60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00000039a5c9ba34 in QThread::exec (this=this@entry=0x25e5df0) at thread/qthread.cpp:503
#5  0x0000003bd42ee535 in QQmlThreadPrivate::run (this=0x25e5df0) at qml/ftw/qqmlthread.cpp:141
#6  0x00000039a5ca04a2 in QThreadPrivate::start (arg=0x25e5df0) at thread/qthread_unix.cpp:331
#7  0x0000003994c07324 in start_thread (arg=0x7fb1175ef700) at pthread_create.c:333
#8  0x00000039944e8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fb10c19b700 (LWP 16492)):
#0  0x00000039944dbccd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x000000399648cd90 in read (__nbytes=16, __buf=0x7fb10c19ab60, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7fb1100025a0) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gwakeup.c:210
#3  0x000000399644961c in g_main_context_check (context=context@entry=0x7fb104000990, max_priority=2147483647, fds=fds@entry=0x7fb104002e70, n_fds=n_fds@entry=1) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gmain.c:3600
#4  0x0000003996449b10 in g_main_context_iterate (context=context@entry=0x7fb104000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gmain.c:3805
#5  0x0000003996449c7c in g_main_context_iteration (context=0x7fb104000990, may_block=1) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gmain.c:3869
#6  0x00000039a5e9aebc in QEventDispatcherGlib::processEvents (this=0x7fb1040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00000039a5e4c17a in QEventLoop::exec (this=this@entry=0x7fb10c19ad60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00000039a5c9ba34 in QThread::exec (this=this@entry=0x299c200) at thread/qthread.cpp:503
#9  0x0000003bd42ee535 in QQmlThreadPrivate::run (this=0x299c200) at qml/ftw/qqmlthread.cpp:141
#10 0x00000039a5ca04a2 in QThreadPrivate::start (arg=0x299c200) at thread/qthread_unix.cpp:331
#11 0x0000003994c07324 in start_thread (arg=0x7fb10c19b700) at pthread_create.c:333
#12 0x00000039944e8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fb10a760700 (LWP 16493)):
#0  0x000000399648e239 in g_mutex_lock (mutex=mutex@entry=0x7fb0fc000990) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gthread-posix.c:1336
#1  0x0000003996449b2e in g_main_context_iterate (context=context@entry=0x7fb0fc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gmain.c:3812
#2  0x0000003996449c7c in g_main_context_iteration (context=0x7fb0fc000990, may_block=1) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gmain.c:3869
#3  0x00000039a5e9aebc in QEventDispatcherGlib::processEvents (this=0x7fb0fc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00000039a5e4c17a in QEventLoop::exec (this=this@entry=0x7fb10a75fd60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00000039a5c9ba34 in QThread::exec (this=this@entry=0x2b48180) at thread/qthread.cpp:503
#6  0x0000003bd42ee535 in QQmlThreadPrivate::run (this=0x2b48180) at qml/ftw/qqmlthread.cpp:141
#7  0x00000039a5ca04a2 in QThreadPrivate::start (arg=0x2b48180) at thread/qthread_unix.cpp:331
#8  0x0000003994c07324 in start_thread (arg=0x7fb10a760700) at pthread_create.c:333
#9  0x00000039944e8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fb108dbe700 (LWP 16494)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000039b0f7c864 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x39b106d1c0 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00000039b0f7c8a9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x0000003994c07324 in start_thread (arg=0x7fb108dbe700) at pthread_create.c:333
#4  0x00000039944e8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fb10296c700 (LWP 16495)):
#0  0x000000399648e239 in g_mutex_lock (mutex=mutex@entry=0x7fb078000990) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gthread-posix.c:1336
#1  0x0000003996449b2e in g_main_context_iterate (context=context@entry=0x7fb078000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gmain.c:3812
#2  0x0000003996449c7c in g_main_context_iteration (context=0x7fb078000990, may_block=1) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gmain.c:3869
#3  0x00000039a5e9aebc in QEventDispatcherGlib::processEvents (this=0x7fb0780008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00000039a5e4c17a in QEventLoop::exec (this=this@entry=0x7fb10296bd10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00000039a5c9ba34 in QThread::exec (this=this@entry=0x2db35c0) at thread/qthread.cpp:503
#6  0x0000003eb26ffac6 in QQuickPixmapReader::run (this=0x2db35c0) at util/qquickpixmapcache.cpp:760
#7  0x00000039a5ca04a2 in QThreadPrivate::start (arg=0x2db35c0) at thread/qthread_unix.cpp:331
#8  0x0000003994c07324 in start_thread (arg=0x7fb10296c700) at pthread_create.c:333
#9  0x00000039944e8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fb101278700 (LWP 16496)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000039a5ca0b2a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x2c9a7e0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=this@entry=0x25a6778, mutex=mutex@entry=0x25a6770, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x0000003eb2772cd3 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x25a6768) at scenegraph/qsgthreadedrenderloop.cpp:224
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x25a66f0) at scenegraph/qsgthreadedrenderloop.cpp:657
#5  0x0000003eb27730d0 in QSGRenderThread::run (this=0x25a66f0) at scenegraph/qsgthreadedrenderloop.cpp:686
#6  0x00000039a5ca04a2 in QThreadPrivate::start (arg=0x25a66f0) at thread/qthread_unix.cpp:331
#7  0x0000003994c07324 in start_thread (arg=0x7fb101278700) at pthread_create.c:333
#8  0x00000039944e8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fb075ffe700 (LWP 16506)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000039a5ca0b2a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x2e2b020) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=this@entry=0x2714218, mutex=mutex@entry=0x2714210, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x0000003eb2772cd3 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x2714208) at scenegraph/qsgthreadedrenderloop.cpp:224
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x2714190) at scenegraph/qsgthreadedrenderloop.cpp:657
#5  0x0000003eb27730d0 in QSGRenderThread::run (this=0x2714190) at scenegraph/qsgthreadedrenderloop.cpp:686
#6  0x00000039a5ca04a2 in QThreadPrivate::start (arg=0x2714190) at thread/qthread_unix.cpp:331
#7  0x0000003994c07324 in start_thread (arg=0x7fb075ffe700) at pthread_create.c:333
#8  0x00000039944e8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fb067300700 (LWP 16530)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000039a5ca0b2a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x3e3ad90) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=this@entry=0x3bd2148, mutex=mutex@entry=0x3bd2140, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x0000003eb2772cd3 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x3bd2138) at scenegraph/qsgthreadedrenderloop.cpp:224
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x3bd20c0) at scenegraph/qsgthreadedrenderloop.cpp:657
#5  0x0000003eb27730d0 in QSGRenderThread::run (this=0x3bd20c0) at scenegraph/qsgthreadedrenderloop.cpp:686
#6  0x00000039a5ca04a2 in QThreadPrivate::start (arg=0x3bd20c0) at thread/qthread_unix.cpp:331
#7  0x0000003994c07324 in start_thread (arg=0x7fb067300700) at pthread_create.c:333
#8  0x00000039944e8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fb064872700 (LWP 22809)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000039a5ca0b2a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x42dd150) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=this@entry=0x42bab38, mutex=mutex@entry=0x42bab30, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x0000003eb2772cd3 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x42bab28) at scenegraph/qsgthreadedrenderloop.cpp:224
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x42baab0) at scenegraph/qsgthreadedrenderloop.cpp:657
#5  0x0000003eb27730d0 in QSGRenderThread::run (this=0x42baab0) at scenegraph/qsgthreadedrenderloop.cpp:686
#6  0x00000039a5ca04a2 in QThreadPrivate::start (arg=0x42baab0) at thread/qthread_unix.cpp:331
#7  0x0000003994c07324 in start_thread (arg=0x7fb064872700) at pthread_create.c:333
#8  0x00000039944e8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fb059b5f700 (LWP 24209)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000039a5ca0b2a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x4471c10) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=this@entry=0x2943a88, mutex=mutex@entry=0x2943a80, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x0000003eb2772cd3 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x2943a78) at scenegraph/qsgthreadedrenderloop.cpp:224
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x2943a00) at scenegraph/qsgthreadedrenderloop.cpp:657
#5  0x0000003eb27730d0 in QSGRenderThread::run (this=0x2943a00) at scenegraph/qsgthreadedrenderloop.cpp:686
#6  0x00000039a5ca04a2 in QThreadPrivate::start (arg=0x2943a00) at thread/qthread_unix.cpp:331
#7  0x0000003994c07324 in start_thread (arg=0x7fb059b5f700) at pthread_create.c:333
#8  0x00000039944e8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fb05905d700 (LWP 24873)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000039a5ca0b2a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x2be75e0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=this@entry=0x44b1fc8, mutex=mutex@entry=0x44b1fc0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x0000003eb2772cd3 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x44b1fb8) at scenegraph/qsgthreadedrenderloop.cpp:224
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x44b1f40) at scenegraph/qsgthreadedrenderloop.cpp:657
#5  0x0000003eb27730d0 in QSGRenderThread::run (this=0x44b1f40) at scenegraph/qsgthreadedrenderloop.cpp:686
#6  0x00000039a5ca04a2 in QThreadPrivate::start (arg=0x44b1f40) at thread/qthread_unix.cpp:331
#7  0x0000003994c07324 in start_thread (arg=0x7fb05905d700) at pthread_create.c:333
#8  0x00000039944e8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fb0493bf700 (LWP 10860)):
[KCrash Handler]
#6  __strstr_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strstr-sse2-unaligned.S:40
#7  0x0000003eb27538da in strstr (__needle=0x3eb28f9d46 "nouveau", __haystack=0x0) at /usr/include/string.h:336
#8  QSGRenderContext::initialize (this=0x3645070, context=<optimized out>) at scenegraph/qsgcontext.cpp:659
#9  0x0000003eb2773189 in QSGRenderThread::run (this=0x4b65640) at scenegraph/qsgthreadedrenderloop.cpp:676
#10 0x00000039a5ca04a2 in QThreadPrivate::start (arg=0x4b65640) at thread/qthread_unix.cpp:331
#11 0x0000003994c07324 in start_thread (arg=0x7fb0493bf700) at pthread_create.c:333
#12 0x00000039944e8a9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fb11e6d7840 (LWP 16477)):
#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00000039a5ca0b2a in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x4b0f960) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x4b65680, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x0000003eb277489a in QSGThreadedRenderLoop::polishAndSync (this=this@entry=0x27381d0, w=<optimized out>, w@entry=0x38ec080, inExpose=inExpose@entry=true) at scenegraph/qsgthreadedrenderloop.cpp:1150
#4  0x0000003eb2776e7f in QSGThreadedRenderLoop::handleExposure (this=this@entry=0x27381d0, window=window@entry=0x3644cc0) at scenegraph/qsgthreadedrenderloop.cpp:946
#5  0x0000003eb277773a in QSGThreadedRenderLoop::exposureChanged (this=0x27381d0, window=0x3644cc0) at scenegraph/qsgthreadedrenderloop.cpp:857
#6  0x0000003eab2f8d65 in QWindow::event (this=this@entry=0x3644cc0, ev=ev@entry=0x7ffd200c1920) at kernel/qwindow.cpp:2054
#7  0x0000003eb27aaedb in QQuickWindow::event (this=0x3644cc0, e=0x7ffd200c1920) at items/qquickwindow.cpp:1413
#8  0x0000003eab95d6bc in QApplicationPrivate::notify_helper (this=this@entry=0x24e20c0, receiver=receiver@entry=0x3644cc0, e=e@entry=0x7ffd200c1920) at kernel/qapplication.cpp:3716
#9  0x0000003eab962b20 in QApplication::notify (this=0x7ffd200c1d60, receiver=0x3644cc0, e=0x7ffd200c1920) at kernel/qapplication.cpp:3499
#10 0x00000039a5e4d55d in QCoreApplication::notifyInternal (this=0x7ffd200c1d60, receiver=receiver@entry=0x3644cc0, event=event@entry=0x7ffd200c1920) at kernel/qcoreapplication.cpp:965
#11 0x0000003eab2f17b8 in QCoreApplication::sendSpontaneousEvent (event=0x7ffd200c1920, receiver=0x3644cc0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#12 QGuiApplicationPrivate::processExposeEvent (e=0x4afbf20) at kernel/qguiapplication.cpp:2648
#13 0x0000003eab2f250d in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x4afbf20) at kernel/qguiapplication.cpp:1643
#14 0x0000003eab2d7234 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:625
#15 0x00007fb11e24d240 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#16 0x00000039964498ed in g_main_dispatch (context=0x7fb1180016f0) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gmain.c:3122
#17 g_main_context_dispatch (context=context@entry=0x7fb1180016f0) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gmain.c:3737
#18 0x0000003996449bd0 in g_main_context_iterate (context=context@entry=0x7fb1180016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gmain.c:3808
#19 0x0000003996449c7c in g_main_context_iteration (context=0x7fb1180016f0, may_block=1) at /var/tmp/portage/dev-libs/glib-2.44.1-r1/work/glib-2.44.1/glib/gmain.c:3869
#20 0x00000039a5e9aea7 in QEventDispatcherGlib::processEvents (this=0x252d1e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#21 0x00000039a5e4c17a in QEventLoop::exec (this=this@entry=0x7ffd200c1c00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#22 0x00000039a5e5354c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#23 0x0000003eab2e74fc in QGuiApplication::exec () at kernel/qguiapplication.cpp:1527
#24 0x0000003eab9592f5 in QApplication::exec () at kernel/qapplication.cpp:2976
#25 0x0000000000432be3 in main (argc=4, argv=<optimized out>) at /var/tmp/portage/kde-plasma/plasma-workspace-5.5.4/work/plasma-workspace-5.5.4/shell/main.cpp:181

Possible duplicates by query: bug 358883, bug 358297, bug 357719, bug 357182, bug 356907.

Reported using DrKonqi