Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-22-lowlatency x86_64
Distribution: Ubuntu 16.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I have 100Mb of 16Gb free and about a gig in swap (was stitching google maps in krita on a 24000x15000 canvas). Chromium spans two monitors on the second activity, and krita is on the first. I was grabbing screenshots and dumping them into krita. Plasmashell crashes every three to four activity switches or so.  Under regular memory conditions, this does not happen.
fwiw, I switch using the switch activity shortcut (meta+tab).

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7fd6fe3068c0 (LWP 11200))]

Thread 19 (Thread 0x7fd6ea38b700 (LWP 11202)):
#0  0x00007fd6f89b6e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fd6fcac5c62 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fd6fcac78d7 in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fd6ecb45629 in QXcbEventReader::run() (this=0xddcae0) at qxcbconnection.cpp:1253
#4  0x00007fd6f90b984e in QThreadPrivate::start(void*) (arg=0xddcae0) at thread/qthread_unix.cpp:331
#5  0x00007fd6f818b6fa in start_thread (arg=0x7fd6ea38b700) at pthread_create.c:333
#6  0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7fd6e35eb700 (LWP 11205)):
#0  0x00007fd6f89b29cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fd6f57296c0 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fd6e35eaae0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007fd6f57296c0 in g_wakeup_acknowledge (wakeup=0x7fd6e40015b0) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gwakeup.c:210
#3  0x00007fd6f56e5e04 in g_main_context_check (context=context@entry=0x7fd6dc000990, max_priority=2147483647, fds=fds@entry=0x7fd6dc003070, n_fds=n_fds@entry=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3632
#4  0x00007fd6f56e62c0 in g_main_context_iterate (context=context@entry=0x7fd6dc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3837
#5  0x00007fd6f56e642c in g_main_context_iteration (context=0x7fd6dc000990, may_block=may_block@entry=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#6  0x00007fd6f92f0a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fd6dc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0x00007fd6f9297dea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fd6e35eace0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007fd6f90b48a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#9  0x00007fd6fb97d3c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007fd6f90b984e in QThreadPrivate::start(void*) (arg=0xed0590) at thread/qthread_unix.cpp:331
#11 0x00007fd6f818b6fa in start_thread (arg=0x7fd6e35eb700) at pthread_create.c:333
#12 0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7fd6da36b700 (LWP 11206)):
#0  0x00007fd6f8191749 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fd6e08bcd04 in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#2  0x00007fd6db0b2ef6 in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#3  0x00007fd6e08bc31c in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#4  0x00007fd6f818b6fa in start_thread (arg=0x7fd6da36b700) at pthread_create.c:333
#5  0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7fd6d1f63700 (LWP 11208)):
#0  0x00007fd6f89b6e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fd6f56e631c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fd6cc002e70, timeout=<optimized out>, context=0x7fd6cc000990) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:4135
#2  0x00007fd6f56e631c in g_main_context_iterate (context=context@entry=0x7fd6cc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3835
#3  0x00007fd6f56e642c in g_main_context_iteration (context=0x7fd6cc000990, may_block=may_block@entry=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007fd6f92f0a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fd6cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fd6f9297dea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fd6d1f62ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd6f90b48a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fd6fb97d3c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fd6f90b984e in QThreadPrivate::start(void*) (arg=0x10b3e30) at thread/qthread_unix.cpp:331
#9  0x00007fd6f818b6fa in start_thread (arg=0x7fd6d1f63700) at pthread_create.c:333
#10 0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fd6cbfff700 (LWP 11209)):
#0  0x00007fd6f89b6e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fd6f56e631c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fd6c4003070, timeout=<optimized out>, context=0x7fd6c4000990) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:4135
#2  0x00007fd6f56e631c in g_main_context_iterate (context=context@entry=0x7fd6c4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3835
#3  0x00007fd6f56e642c in g_main_context_iteration (context=0x7fd6c4000990, may_block=may_block@entry=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007fd6f92f0a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fd6c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fd6f9297dea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fd6cbffece0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd6f90b48a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fd6fb97d3c5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fd6f90b984e in QThreadPrivate::start(void*) (arg=0x11802d0) at thread/qthread_unix.cpp:331
#9  0x00007fd6f818b6fa in start_thread (arg=0x7fd6cbfff700) at pthread_create.c:333
#10 0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7fd6ca7b3700 (LWP 11210)):
#0  0x00007fd6f81913a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd6fdd58bd4 in QTWTF::TCMalloc_PageHeap::scavengerThread() (this=0x7fd6fde40ee0 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007fd6fdd58c19 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007fd6f818b6fa in start_thread (arg=0x7fd6ca7b3700) at pthread_create.c:333
#4  0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fd643fff700 (LWP 11211)):
#0  0x00007fd6f89878dd in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fd6f89b94d4 in usleep (useconds=<optimized out>) at ../sysdeps/posix/usleep.c:32
#2  0x00007fd6e08bbb5b in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#3  0x00007fd6db0b0d8b in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#4  0x00007fd6c8d5dee7 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kquickcontrolsaddons/libkquickcontrolsaddonsplugin.so
#5  0x00007fd6f92c8e4f in QMetaObject::activate(QObject*, int, int, void**) (a=0x7fd643ffeb00, r=0x2ca2de0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#6  0x00007fd6f92c8e4f in QMetaObject::activate(QObject*, int, int, void**) (sender=0x119df30, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3698
#7  0x00007fd6fc3b1ece in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fd6fc3859c8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fd6fc38b08c in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007fd6f90b984e in QThreadPrivate::start(void*) (arg=0x189c760) at thread/qthread_unix.cpp:331
#11 0x00007fd6f818b6fa in start_thread (arg=0x7fd643fff700) at pthread_create.c:333
#12 0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fd6437fe700 (LWP 11212)):
#0  0x00007fd6f81942ad in __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007fd6f818de82 in __GI___pthread_mutex_lock (mutex=0x7fd6e0b40780) at ../nptl/pthread_mutex_lock.c:115
#2  0x00007fd6e08bf04c in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#3  0x00007fd6db30f53e in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#4  0x00007fd6db0ede4b in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#5  0x00007fd6db0edf73 in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#6  0x00007fd6db200a0c in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#7  0x00007fd6db473334 in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#8  0x00007fd6daf8fbf2 in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#9  0x00007fd6daef783c in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#10 0x00007fd6db0b2bed in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#11 0x00007fd6e08bc31c in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#12 0x00007fd6f818b6fa in start_thread (arg=0x7fd6437fe700) at pthread_create.c:333
#13 0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fd640feb700 (LWP 11213)):
#0  0x00007fd6f81913a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd6f90baaeb in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x1084360) at thread/qwaitcondition_unix.cpp:136
#2  0x00007fd6f90baaeb in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x111d240, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fd6fc38a92e in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007fd6fc38b1b3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fd6f90b984e in QThreadPrivate::start(void*) (arg=0x111d1c0) at thread/qthread_unix.cpp:331
#6  0x00007fd6f818b6fa in start_thread (arg=0x7fd640feb700) at pthread_create.c:333
#7  0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fd633fff700 (LWP 11214)):
#0  0x00007fd6f8191749 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fd6e08bcd04 in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#2  0x00007fd6db0b2ef6 in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#3  0x00007fd6e08bc31c in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#4  0x00007fd6f818b6fa in start_thread (arg=0x7fd633fff700) at pthread_create.c:333
#5  0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fd626383700 (LWP 11215)):
#0  0x00007fd6f89b6e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fd6f56e631c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fd620004cc0, timeout=<optimized out>, context=0x7fd620000990) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:4135
#2  0x00007fd6f56e631c in g_main_context_iterate (context=context@entry=0x7fd620000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3835
#3  0x00007fd6f56e642c in g_main_context_iteration (context=0x7fd620000990, may_block=may_block@entry=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007fd6f92f0a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fd6200008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fd6f9297dea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fd626382cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd6f90b48a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fd6288a37d7 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007fd6f90b984e in QThreadPrivate::start(void*) (arg=0x1e94c60) at thread/qthread_unix.cpp:331
#9  0x00007fd6f818b6fa in start_thread (arg=0x7fd626383700) at pthread_create.c:333
#10 0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fd625463700 (LWP 11218)):
#0  0x00007fd6f81913a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd6f90baaeb in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x29f5260) at thread/qwaitcondition_unix.cpp:136
#2  0x00007fd6f90baaeb in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x29f2fb0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fd6fc38a92e in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007fd6fc38b1b3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fd6f90b984e in QThreadPrivate::start(void*) (arg=0x29f2f30) at thread/qthread_unix.cpp:331
#6  0x00007fd6f818b6fa in start_thread (arg=0x7fd625463700) at pthread_create.c:333
#7  0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fd624c62700 (LWP 11224)):
[KCrash Handler]
#6  0x00007fd6db0cce42 in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#7  0x00007fd6daef1ca7 in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#8  0x00007fd6db0b2bed in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#9  0x00007fd6e08bc31c in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#10 0x00007fd6f818b6fa in start_thread (arg=0x7fd624c62700) at pthread_create.c:333
#11 0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fd6138ab700 (LWP 11236)):
#0  0x00007fd6f81913a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd6f90baaeb in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2a4b220) at thread/qwaitcondition_unix.cpp:136
#2  0x00007fd6f90baaeb in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x1e191b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fd6fc38a92e in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007fd6fc38b1b3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fd6f90b984e in QThreadPrivate::start(void*) (arg=0x1e19130) at thread/qthread_unix.cpp:331
#6  0x00007fd6f818b6fa in start_thread (arg=0x7fd6138ab700) at pthread_create.c:333
#7  0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fd612a5b700 (LWP 11237)):
#0  0x00007fd6f8191749 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fd6e08bcd04 in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#2  0x00007fd6db0b2ef6 in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#3  0x00007fd6e08bc31c in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#4  0x00007fd6f818b6fa in start_thread (arg=0x7fd612a5b700) at pthread_create.c:333
#5  0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fd611a54700 (LWP 11238)):
#0  0x00007fd6f81942ad in __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007fd6f818de82 in __GI___pthread_mutex_lock (mutex=0x7fd6e0b40780) at ../nptl/pthread_mutex_lock.c:115
#2  0x00007fd6e08bf04c in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#3  0x00007fd6e08903ae in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#4  0x00007fd6e089400b in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#5  0x00007fd6f151c023 in  () at /usr/lib/nvidia-361/libGLX.so.0
#6  0x00007fd6f151c5c1 in  () at /usr/lib/nvidia-361/libGLX.so.0
#7  0x00007fd6fe4d50d7 in QGLXContext::doneCurrent() (this=0x300f1f0) at qglxintegration.cpp:518
#8  0x00007fd6f96154a7 in QOpenGLContext::doneCurrent() (this=0x23fb970) at kernel/qopenglcontext.cpp:974
#9  0x00007fd6fc38c48b in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007fd6fc38accc in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007fd6fc38b094 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007fd6f90b984e in QThreadPrivate::start(void*) (arg=0x2a279b0) at thread/qthread_unix.cpp:331
#13 0x00007fd6f818b6fa in start_thread (arg=0x7fd611a54700) at pthread_create.c:333
#14 0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fd611253700 (LWP 11239)):
#0  0x00007fd6f8191749 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fd6e08bcd04 in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#2  0x00007fd6db0b2ef6 in  () at /usr/lib/nvidia-361/libnvidia-glcore.so.361.42
#3  0x00007fd6e08bc31c in  () at /usr/lib/nvidia-361/libGLX_nvidia.so.0
#4  0x00007fd6f818b6fa in start_thread (arg=0x7fd611253700) at pthread_create.c:333
#5  0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fd603703700 (LWP 11241)):
#0  0x00007fd6f89b6e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fd6f56e631c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fd5f8003320, timeout=<optimized out>, context=0x7fd5f8000990) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:4135
#2  0x00007fd6f56e631c in g_main_context_iterate (context=context@entry=0x7fd5f8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3835
#3  0x00007fd6f56e642c in g_main_context_iteration (context=0x7fd5f8000990, may_block=may_block@entry=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#4  0x00007fd6f92f0a9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fd5f80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fd6f9297dea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fd603702c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd6f90b48a4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fd6fc314ed6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fd6f90b984e in QThreadPrivate::start(void*) (arg=0x2f09c30) at thread/qthread_unix.cpp:331
#9  0x00007fd6f818b6fa in start_thread (arg=0x7fd603703700) at pthread_create.c:333
#10 0x00007fd6f89c2b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fd6fe3068c0 (LWP 11200)):
#0  0x00007fd6f81913a0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd6f90baaeb in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2aceb70) at thread/qwaitcondition_unix.cpp:136
#2  0x00007fd6f90baaeb in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x2a279f0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007fd6fc38883c in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007fd6fc38a720 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fd6f95e72e5 in QWindow::event(QEvent*) (this=0x184fbc0, ev=<optimized out>) at kernel/qwindow.cpp:2060
#6  0x00007fd6fc3bd871 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fd6fde892eb in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#8  0x00007fd6f9d9f05c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0xdc0c80, receiver=receiver@entry=0x184fbc0, e=e@entry=0x7ffefaa7d970) at kernel/qapplication.cpp:3716
#9  0x00007fd6f9da4516 in QApplication::notify(QObject*, QEvent*) (this=0x7ffefaa7dd90, receiver=0x184fbc0, e=0x7ffefaa7d970) at kernel/qapplication.cpp:3499
#10 0x00007fd6f929a62b in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffefaa7dd90, receiver=receiver@entry=0x184fbc0, event=event@entry=0x7ffefaa7d970) at kernel/qcoreapplication.cpp:965
#11 0x00007fd6f95df4ec in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (event=0x7ffefaa7d970, receiver=0x184fbc0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#12 0x00007fd6f95df4ec in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (e=0x3711940) at kernel/qguiapplication.cpp:2663
#13 0x00007fd6f95e025d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) (e=e@entry=0x3711940) at kernel/qguiapplication.cpp:1658
#14 0x00007fd6f95c3f38 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) (flags=...) at kernel/qwindowsysteminterface.cpp:625
#15 0x00007fd6ecb76f10 in userEventSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#16 0x00007fd6f56e6127 in g_main_context_dispatch (context=0x7fd6e40016f0) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3154
#17 0x00007fd6f56e6127 in g_main_context_dispatch (context=context@entry=0x7fd6e40016f0) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3769
#18 0x00007fd6f56e6380 in g_main_context_iterate (context=context@entry=0x7fd6e40016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3840
#19 0x00007fd6f56e642c in g_main_context_iteration (context=0x7fd6e40016f0, may_block=may_block@entry=1) at /build/glib2.0-t9oPgV/glib2.0-2.48.0/./glib/gmain.c:3901
#20 0x00007fd6f92f0a7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0xe1d720, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#21 0x00007fd6f9297dea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffefaa7dc30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#22 0x00007fd6f929fe8c in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1229
#23 0x00007fd6f95d5c3c in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1542
#24 0x00007fd6f9d9b495 in QApplication::exec() () at kernel/qapplication.cpp:2976
#25 0x0000000000432d4a in main(int, char**) (argc=3, argv=<optimized out>) at /build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/main.cpp:181

Reported using DrKonqi