Application: plasmashell (5.9.0)

Qt Version: 5.8.0
Frameworks Version: 5.30.0
Operating System: Linux 4.9.6-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:
Changing desktop using the "Pager" Widget

I cant reproduce this bug more that one time, i had Terminix open on the desktop i was changing to

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 0x7ff07b39e800 (LWP 6824))]

Thread 17 (Thread 0x7fef737fe700 (LWP 16650)):
#0  0x00007ff07402b10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff07515b58b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fefbf4ff1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fefbf503988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fefbf5011f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7fef73fff700 (LWP 16649)):
#0  0x00007ff07402b10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff07515b58b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fefbf4ff1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fefbf503988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#17 0x00007fefbf5011f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#18 0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#19 0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#20 0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7fef84e76700 (LWP 16648)):
#0  0x00007ff07402b10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff07515b58b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fefbf4ff1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fefbf503988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fefbf5011f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7fef85677700 (LWP 16647)):
#0  0x00007ff07402b10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff07515b58b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fefbf4ff1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fefbf503988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fefbf5011f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#13 0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#14 0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7fef85e78700 (LWP 16646)):
#0  0x00007ff07402b10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff07515b58b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fefbf4ff1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fefbf503988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#17 0x00007fefbf5011f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#18 0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#19 0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#20 0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7fef86679700 (LWP 16645)):
#0  0x00007ff07402b10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff07515b58b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fefbf4ff1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fefbf503988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fefbf5011f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7fef86e7a700 (LWP 16644)):
#0  0x00007ff07402b10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff07515b58b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fefbf4ff1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fefbf503988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#17 0x00007fefbf5011f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#18 0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#19 0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#20 0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7fefa54b7700 (LWP 16643)):
#0  0x00007ff07402b10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff07515b58b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fefbf4ff1c0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007fefbf503988 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007fefbf5039e2 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007fefbf4fe263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007fefbf5011f9 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7fefa710d700 (LWP 16396)):
#0  0x00007ff074a624ed in read () at /usr/lib/libc.so.6
#1  0x00007ff067a31f51 in pa_read () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#2  0x00007ff0680c230e in pa_mainloop_prepare () at /usr/lib/libpulse.so.0
#3  0x00007ff0680c2d80 in pa_mainloop_iterate () at /usr/lib/libpulse.so.0
#4  0x00007ff0680c2e40 in pa_mainloop_run () at /usr/lib/libpulse.so.0
#5  0x00007ff0680d0e29 in  () at /usr/lib/libpulse.so.0
#6  0x00007ff067a60fe8 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#7  0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7fefa68c9700 (LWP 7170)):
#0  0x00007ff074a6648d in poll () at /usr/lib/libc.so.6
#1  0x00007ff06f885786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff06f88589c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff07538a46b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007ff075333c9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff075155a73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007ff078291025 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7fefc5fcc700 (LWP 7052)):
#0  0x00007ff06f8cadd4 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007ff06f88531a in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff06f8857f0 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff06f88589c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007ff07538a46b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff075333c9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007ff075155a73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007ff078e45fd6 in  () at /usr/lib/libQt5Quick.so.5
#8  0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7ff050daa700 (LWP 6996)):
#0  0x00007ff07402b10f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff07ab3b234 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007ff07ab3b279 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7ff052d89700 (LWP 6989)):
#0  0x00007ff074a624ed in read () at /usr/lib/libc.so.6
#1  0x00007ff06f8c9a10 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff06f885235 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff06f885724 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007ff06f88589c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007ff07538a46b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007ff075333c9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007ff075155a73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007ff078291025 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7ff060f56700 (LWP 6936)):
#0  0x00007ff074a6648d in poll () at /usr/lib/libc.so.6
#1  0x00007ff06f885786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff06f88589c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff07538a46b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007ff075333c9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff075155a73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007ff078291025 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7ff06299e700 (LWP 6857)):
#0  0x00007ff06f8cadb9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007ff06f884c95 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff06f8856ab in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff06f88589c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007ff07538a46b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff075333c9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007ff075155a73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007ff075eda125 in  () at /usr/lib/libQt5DBus.so.5
#8  0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7ff0645f7700 (LWP 6833)):
#0  0x00007ff074a6648d in poll () at /usr/lib/libc.so.6
#1  0x00007ff079a618e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007ff079a63679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007ff066536239 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007ff07515a6d8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007ff074025454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007ff074a6f7df in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7ff07b39e800 (LWP 6824)):
[KCrash Handler]
#6  0x00007ff0752fb520 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007ff0752fb7f9 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff075303909 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007ff075361149 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#10 0x00007ff0753d8884 in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#11 0x00007ff0752dcd6b in QAbstractItemModel::endRemoveRows() () at /usr/lib/libQt5Core.so.5
#12 0x00007fefbd53950b in  () at /usr/lib/libtaskmanager.so.6
#13 0x00007fefbd53c759 in  () at /usr/lib/libtaskmanager.so.6
#14 0x00007ff075361149 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#15 0x00007ff0753d8814 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#16 0x00007ff0752dc613 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/libQt5Core.so.5
#17 0x00007ff075301055 in  () at /usr/lib/libQt5Core.so.5
#18 0x00007ff0753024f4 in  () at /usr/lib/libQt5Core.so.5
#19 0x00007ff075302e91 in QSortFilterProxyModel::invalidateFilter() () at /usr/lib/libQt5Core.so.5
#20 0x00007fefbd5334c5 in TaskManager::TaskFilterProxyModel::setVirtualDesktop(unsigned int) () at /usr/lib/libtaskmanager.so.6
#21 0x00007fefbd55f077 in  () at /usr/lib/libtaskmanager.so.6
#22 0x00007ff07827b455 in  () at /usr/lib/libQt5Qml.so.5
#23 0x00007ff07827b8b0 in  () at /usr/lib/libQt5Qml.so.5
#24 0x00007ff078278ae9 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#25 0x00007ff078278cde in QQmlBinding::refresh() () at /usr/lib/libQt5Qml.so.5
#26 0x00007ff07824e444 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/libQt5Qml.so.5
#27 0x00007ff0781f25ec in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/libQt5Qml.so.5
#28 0x00007ff075361864 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#29 0x00007ff0753614be in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#30 0x00007ff077da364e in KWindowSystem::currentDesktopChanged(int) () at /usr/lib/libKF5WindowSystem.so.5
#31 0x00007ff061376757 in  () at /usr/lib/qt/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#32 0x00007ff07533295f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib/libQt5Core.so.5
#33 0x00007ff066537974 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib/libQt5XcbQpa.so.5
#34 0x00007ff066538655 in QXcbConnection::processXcbEvents() () at /usr/lib/libQt5XcbQpa.so.5
#35 0x00007ff075361fa9 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#36 0x00007ff0762a334c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#37 0x00007ff0762aab61 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#38 0x00007ff075335840 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#39 0x00007ff075337fcd in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#40 0x00007ff07538a043 in  () at /usr/lib/libQt5Core.so.5
#41 0x00007ff06f885587 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#42 0x00007ff06f8857f0 in  () at /usr/lib/libglib-2.0.so.0
#43 0x00007ff06f88589c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#44 0x00007ff07538a44f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#45 0x00007ff075333c9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#46 0x00007ff07533c1e4 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#47 0x000000000041c952 in  ()
#48 0x00007ff0749a7291 in __libc_start_main () at /usr/lib/libc.so.6
#49 0x000000000041ccda in _start ()

Reported using DrKonqi