Application: plasmashell (5.8.2)

Qt Version: 5.7.0
Frameworks Version: 5.27.0
Operating System: Linux 4.8.2-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:
I switched to an empty workspace by clicking on it in the worksapce switcher in the panel.

The crash does not seem to be reproducible.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fbd8458a800 (LWP 898))]

Thread 18 (Thread 0x7fbc867fc700 (LWP 3193)):
#0  0x00007fbd7d4a210f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbd7e38dc2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbcc640f1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fbcc6413988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fbcc64111f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 17 (Thread 0x7fbc86ffd700 (LWP 3192)):
#0  0x00007fbd7d4a210f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbd7e38dc2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbcc640f1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fbcc6413988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007fbcc64111f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#17 0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#18 0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7fbc877fe700 (LWP 3191)):
#0  0x00007fbd7d4a210f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbd7e38dc2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbcc640f1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fbcc6413988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fbcc64111f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#15 0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#16 0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7fbc87fff700 (LWP 3190)):
#0  0x00007fbd7d4a210f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbd7e38dc2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbcc640f1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fbcc6413988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fbcc64111f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#15 0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#16 0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7fbc9cfd1700 (LWP 3189)):
#0  0x00007fbd7d4a210f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbd7e38dc2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbcc640f1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fbcc6413988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fbcc64111f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7fbc9d7d2700 (LWP 3188)):
#0  0x00007fbd7d4a210f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbd7e38dc2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbcc640f1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fbcc6413988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fbcc64111f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#15 0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#16 0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7fbc9dfd3700 (LWP 3187)):
#0  0x00007fbd7d4a210f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbd7e38dc2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbcc640f1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fbcc6413988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fbcc64111f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7fbc9e7d4700 (LWP 3186)):
#0  0x00007fbd7d4a210f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbd7e38dc2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbcc640f1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fbcc6413988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fbcc64139e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fbcc640e263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fbcc64111f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#13 0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#14 0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7fbcc7fff700 (LWP 2391)):
#0  0x00007fbd7dc954ed in read () at /usr/lib/libc.so.6
#1  0x00007fbd70f7cf81 in pa_read () at /usr/lib/pulseaudio/libpulsecommon-9.0.so
#2  0x00007fbd7160c50e in pa_mainloop_prepare () at /usr/lib/libpulse.so.0
#3  0x00007fbd7160cf80 in pa_mainloop_iterate () at /usr/lib/libpulse.so.0
#4  0x00007fbd7160d040 in pa_mainloop_run () at /usr/lib/libpulse.so.0
#5  0x00007fbd7161b069 in  () at /usr/lib/libpulse.so.0
#6  0x00007fbd70fabed8 in  () at /usr/lib/pulseaudio/libpulsecommon-9.0.so
#7  0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7fbcb18f5700 (LWP 2330)):
#0  0x00007fbd78fa6db0 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007fbd78f61184 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#2  0x00007fbd78f61724 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007fbd78f6189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007fbd7e5bb72b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fbd7e56523a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fbd7e3880f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007fbd816eb2d5 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7fbccce5e700 (LWP 1048)):
#0  0x00007fbd7dc9948d in poll () at /usr/lib/libc.so.6
#1  0x00007fbd78f61786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fbd78f6189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fbd7e5bb72b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fbd7e56523a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fbd7e3880f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fbd8228a856 in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7fbcd21ca700 (LWP 981)):
#0  0x00007fbd7d4a210f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbcd5c8b4d3 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007fbcd5c8ac17 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7fbd56fac700 (LWP 980)):
#0  0x00007fbd7d4a210f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbd83d1aac4 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007fbd83d1ab09 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fbd64d60700 (LWP 979)):
#0  0x00007fbd78fa6db9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007fbd78f60c95 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007fbd78f616ab in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007fbd78f6189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007fbd7e5bb72b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fbd7e56523a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fbd7e3880f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007fbd816eb2d5 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fbd667c0700 (LWP 971)):
#0  0x00007fbd7dc9948d in poll () at /usr/lib/libc.so.6
#1  0x00007fbd78f61786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fbd78f6189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fbd7e5bb72b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fbd7e56523a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fbd7e3880f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fbd816eb2d5 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fbd67fff700 (LWP 922)):
#0  0x00007fbd7e383f49 in QMutex::lock() () at /usr/lib/libQt5Core.so.5
#1  0x00007fbd7e5bae9f in  () at /usr/lib/libQt5Core.so.5
#2  0x00007fbd78f60c89 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#3  0x00007fbd78f616ab in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fbd78f6189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fbd7e5bb72b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fbd7e56523a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fbd7e3880f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fbd7f108e55 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fbd6db89700 (LWP 917)):
#0  0x00007fbd7dc9948d in poll () at /usr/lib/libc.so.6
#1  0x00007fbd82c5a8e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007fbd82c5c679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007fbd6f8c6449 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007fbd7e38cd78 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007fbd7d49c454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007fbd7dca27df in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fbd8458a800 (LWP 898)):
[KCrash Handler]
#6  0x00007fbd7e52ddf0 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fbd7e52e0d9 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fbd7e536099 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fbd7e592659 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#10 0x00007fbd7e60a154 in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#11 0x00007fbd7e50f24b in QAbstractItemModel::endRemoveRows() () at /usr/lib/libQt5Core.so.5
#12 0x00007fbcc4d78ed6 in  () at /usr/lib/libtaskmanager.so.6
#13 0x00007fbcc4d7b0b9 in  () at /usr/lib/libtaskmanager.so.6
#14 0x00007fbd7e592659 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#15 0x00007fbd7e60a0e4 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#16 0x00007fbd7e50eaf3 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/libQt5Core.so.5
#17 0x00007fbd7e5337e5 in  () at /usr/lib/libQt5Core.so.5
#18 0x00007fbd7e534c84 in  () at /usr/lib/libQt5Core.so.5
#19 0x00007fbd7e535621 in QSortFilterProxyModel::invalidateFilter() () at /usr/lib/libQt5Core.so.5
#20 0x00007fbcc4d71d75 in TaskManager::TaskFilterProxyModel::setVirtualDesktop(unsigned int) () at /usr/lib/libtaskmanager.so.6
#21 0x00007fbcc4d9d9c1 in  () at /usr/lib/libtaskmanager.so.6
#22 0x00007fbcc4d9e7fb in TaskManager::TasksModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/libtaskmanager.so.6
#23 0x00007fbd81652860 in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () at /usr/lib/libQt5Qml.so.5
#24 0x00007fbd816d6905 in QQmlBinding::write(QQmlPropertyData const&, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#25 0x00007fbd816d7775 in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#26 0x00007fbd816d80be in QQmlBinding::refresh() () at /usr/lib/libQt5Qml.so.5
#27 0x00007fbd816aced4 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/libQt5Qml.so.5
#28 0x00007fbd8165702c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/libQt5Qml.so.5
#29 0x00007fbd7e592d7c in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#30 0x00007fbd7e5929ce in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#31 0x00007fbd8120d98e in KWindowSystem::currentDesktopChanged(int) () at /usr/lib/libKF5WindowSystem.so.5
#32 0x00007fbd66be0f47 in  () at /usr/lib/qt/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#33 0x00007fbd7e56437f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib/libQt5Core.so.5
#34 0x00007fbd6f8c7c14 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib/libQt5XcbQpa.so.5
#35 0x00007fbd6f8c88a5 in QXcbConnection::processXcbEvents() () at /usr/lib/libQt5XcbQpa.so.5
#36 0x00007fbd7e5934b9 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#37 0x00007fbd7f4d1e0c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#38 0x00007fbd7f4d9581 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#39 0x00007fbd7e566de0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#40 0x00007fbd7e56956d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#41 0x00007fbd7e5bb303 in  () at /usr/lib/libQt5Core.so.5
#42 0x00007fbd78f61587 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#43 0x00007fbd78f617f0 in  () at /usr/lib/libglib-2.0.so.0
#44 0x00007fbd78f6189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#45 0x00007fbd7e5bb70f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#46 0x00007fbd7e56523a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#47 0x00007fbd7e56d73c in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#48 0x000000000041c8b2 in  ()
#49 0x00007fbd7dbda291 in __libc_start_main () at /usr/lib/libc.so.6
#50 0x000000000041cc3a in _start ()

Reported using DrKonqi