Application: plasmashell (5.8.6)

Qt Version: 5.6.1
Frameworks Version: 5.26.0
Operating System: Linux 4.4.74-18.20-default x86_64
Distribution: "openSUSE Leap 42.2"

-- Information about the crash:
- What I was doing when the application crashed:
I was simply closing several windows
- Unusual behavior I noticed:
nothing I noticed
- Custom settings of the application:
altered color-scheme, nothing more. Design is breeze-dark.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc5feba7900 (LWP 2212))]

Thread 18 (Thread 0x7fc5008ac700 (LWP 29237)):
#0  0x00007fc5f78ca0bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fc5f87b765b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fc53eeb142f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fc53eeb4dea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fc53eeb2a46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7fc5010ad700 (LWP 29236)):
#0  0x00007fc5f78ca0bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fc5f87b765b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fc53eeb142f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fc53eeb4dea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fc53eeb2a46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7fc5018ae700 (LWP 29235)):
#0  0x00007fc5f78ca0bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fc5f87b765b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fc53eeb142f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fc53eeb4dea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fc53eeb2a46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7fc5020af700 (LWP 29234)):
#0  0x00007fc5f78ca0bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fc5f87b765b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fc53eeb142f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fc53eeb4dea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fc53eeb2a46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7fc4fbffe700 (LWP 29233)):
#0  0x00007fc5f78ca0bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fc5f87b765b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fc53eeb142f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fc53eeb4dea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fc53eeb2a46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7fc4fb3b9700 (LWP 29232)):
#0  0x00007fc5f78ca0bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fc5f87b765b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fc53eeb142f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fc53eeb4dea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#11 0x00007fc53eeb2a46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#12 0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#13 0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#14 0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7fc4f89a7700 (LWP 29231)):
#0  0x00007fc5f78ca0bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fc5f87b765b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fc53eeb142f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fc53eeb4dea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#11 0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#12 0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#13 0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#14 0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#15 0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#16 0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#17 0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#18 0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#19 0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#20 0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#21 0x00007fc53eeb2a46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#22 0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#23 0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#24 0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7fc4efffe700 (LWP 29230)):
#0  0x00007fc5f78ca0bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fc5f87b765b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fc53eeb142f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fc53eeb4dea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007fc53eeb4e32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007fc53eeaf45b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#11 0x00007fc53eeb2a46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#12 0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#13 0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#14 0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7fc51efc2700 (LWP 18038)):
#0  0x00007fc5f4783ba8 in g_main_context_query () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fc5f478427f in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fc5f478442c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fc5f89c933b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fc5f8976feb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fc5f87b1f1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#8  0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7fc51ffff700 (LWP 4422)):
#0  0x00007fc5ed6c898e in pa_srbchannel_read () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#1  0x00007fc5ed6c4ee8 in  () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#2  0x00007fc5ed6c7bfb in  () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#3  0x00007fc5ed6c7fad in  () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#4  0x00007fc5ed6c884a in  () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#5  0x00007fc5edd32a14 in pa_mainloop_dispatch () at /usr/lib64/libpulse.so.0
#6  0x00007fc5edd32dea in pa_mainloop_iterate () at /usr/lib64/libpulse.so.0
#7  0x00007fc5edd32e90 in pa_mainloop_run () at /usr/lib64/libpulse.so.0
#8  0x00007fc5edd41006 in  () at /usr/lib64/libpulse.so.0
#9  0x00007fc5ed6d8408 in  () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#10 0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7fc529fb4700 (LWP 4418)):
#0  0x00007fc5f80b828d in read () at /lib64/libc.so.6
#1  0x00007fc5f47c4670 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fc5f4783e49 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fc5f47842a8 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fc5f478442c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007fc5f89c933b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fc5f8976feb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007fc5f87b1f1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007fc5fbabf9d8 in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7fc53b38e700 (LWP 2695)):
#0  0x00007fc5f80bc20d in poll () at /lib64/libc.so.6
#1  0x00007fc5f4784314 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fc5f478442c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fc5f89c933b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fc5f8976feb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fc5f87b1f1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fc53c7b78f7 in KCupsConnection::run() () at /usr/lib64/libkcupslib.so
#7  0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7fc54666b700 (LWP 2470)):
#0  0x00007fc5f80bc20d in poll () at /lib64/libc.so.6
#1  0x00007fc5f4784314 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fc5f478442c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fc5f89c933b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fc5f8976feb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fc5f87b1f1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fc5fc642632 in  () at /usr/lib64/libQt5Quick.so.5
#7  0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fc5d527f700 (LWP 2416)):
#0  0x00007fc5f78ca0bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fc5fe28993b in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007fc5fe289969 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fc5d6fb4700 (LWP 2358)):
#0  0x00007fc5f80bc20d in poll () at /lib64/libc.so.6
#1  0x00007fc5f4784314 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fc5f478442c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fc5f89c933b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fc5f8976feb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fc5f87b1f1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fc5fbabf9d8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fc5e4a61700 (LWP 2323)):
#0  0x00007fc5f478393b in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#1  0x00007fc5f4784230 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fc5f478442c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fc5f89c933b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fc5f8976feb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fc5f87b1f1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fc5fbabf9d8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fc5ebd44700 (LWP 2229)):
#0  0x00007fc5f80b828d in read () at /lib64/libc.so.6
#1  0x00007fc5f47c4670 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fc5f4783e49 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fc5f47842a8 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fc5f478442c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007fc5f89c931c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fc5f8976feb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007fc5f87b1f1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007fc5f9532295 in  () at /usr/lib64/libQt5DBus.so.5
#9  0x00007fc5f87b69e9 in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007fc5f78c5744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007fc5f80c4aad in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fc5feba7900 (LWP 2212)):
[KCrash Handler]
#6  0x00007fc5f89441c0 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007fc5f894449f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fc5f894b339 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fc5f89a2bc1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#10 0x00007fc5f8a19284 in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#11 0x00007fc5f8927b31 in QAbstractItemModel::endRemoveRows() () at /usr/lib64/libQt5Core.so.5
#12 0x00007fc54522955f in TaskManager::TaskGroupingProxyModel::Private::sourceRowsAboutToBeRemoved(QModelIndex const&, int, int) () at /usr/lib64/libtaskmanager.so.6
#13 0x00007fc54522c0e9 in  () at /usr/lib64/libtaskmanager.so.6
#14 0x00007fc5f89a2bc1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#15 0x00007fc5f8a19234 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#16 0x00007fc5f89272b4 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib64/libQt5Core.so.5
#17 0x00007fc5f8945e1d in  () at /usr/lib64/libQt5Core.so.5
#18 0x00007fc5f8945fcd in  () at /usr/lib64/libQt5Core.so.5
#19 0x00007fc5f894b318 in  () at /usr/lib64/libQt5Core.so.5
#20 0x00007fc5f89a2bc1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#21 0x00007fc5f8a19234 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#22 0x00007fc5f89272b4 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib64/libQt5Core.so.5
#23 0x00007fc544fc3ed5 in  () at /usr/lib64/libKF5ItemModels.so.5
#24 0x00007fc544fc4bb9 in  () at /usr/lib64/libKF5ItemModels.so.5
#25 0x00007fc5f89a2bc1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#26 0x00007fc5f8a19234 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#27 0x00007fc5f89272b4 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib64/libQt5Core.so.5
#28 0x00007fc5f893f2bf in  () at /usr/lib64/libQt5Core.so.5
#29 0x00007fc5f89a2bc1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#30 0x00007fc5f8a19234 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#31 0x00007fc5f89272b4 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib64/libQt5Core.so.5
#32 0x00007fc545243235 in TaskManager::XWindowTasksModel::Private::removeWindow(unsigned long long) () at /usr/lib64/libtaskmanager.so.6
#33 0x00007fc5f89a31d3 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#34 0x00007fc5fb5dc302 in KWindowSystem::windowRemoved(unsigned long long) () at /usr/lib64/libKF5WindowSystem.so.5
#35 0x00007fc5e4e82935 in  () at /usr/lib64/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#36 0x00007fc5fb5d4ca1 in NETRootInfo::update(QFlags<NET::Property>, QFlags<NET::Property2>) () at /usr/lib64/libKF5WindowSystem.so.5
#37 0x00007fc5fb5d5b72 in NETRootInfo::event(xcb_generic_event_t*, QFlags<NET::Property>*, QFlags<NET::Property2>*) () at /usr/lib64/libKF5WindowSystem.so.5
#38 0x00007fc5fb5d5da2 in NETRootInfo::event(xcb_generic_event_t*, unsigned long*, int) () at /usr/lib64/libKF5WindowSystem.so.5
#39 0x00007fc5e4e82306 in  () at /usr/lib64/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#40 0x00007fc5f8976280 in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#41 0x00007fc5e99f3be4 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#42 0x00007fc5e99f5c3b in QXcbConnection::processXcbEvents() () at /usr/lib64/libQt5XcbQpa.so.5
#43 0x00007fc5f89a4176 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#44 0x00007fc5f9901e3c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#45 0x00007fc5f990649a in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#46 0x00007fc5f8978fd5 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#47 0x00007fc5f897adba in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#48 0x00007fc5f89c9c93 in  () at /usr/lib64/libQt5Core.so.5
#49 0x00007fc5f4784134 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#50 0x00007fc5f4784388 in  () at /usr/lib64/libglib-2.0.so.0
#51 0x00007fc5f478442c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#52 0x00007fc5f89c931c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#53 0x00007fc5f8976feb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#54 0x00007fc5f897eed6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#55 0x000000000041ee0f in  ()
#56 0x00007fc5f7ffb6e5 in __libc_start_main () at /lib64/libc.so.6
#57 0x000000000041f079 in _start ()

Reported using DrKonqi