Application: plasmashell (5.9.5)

Qt Version: 5.8.0
Frameworks Version: 5.34.0
Operating System: Linux 4.11.1-1-MANJARO x86_64
Distribution: "Manjaro Linux"

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

Ran the command "exit" in Matlab to close the application and any open figures.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8acf130800 (LWP 939))]

Thread 18 (Thread 0x7f49bbfff700 (LWP 16448)):
#0  0x00007f8ac880a67d in poll () at /usr/lib/libc.so.6
#1  0x00007f8abd3e0ee1 in  () at /usr/lib/libpulse.so.0
#2  0x00007f8abd3d26f1 in pa_mainloop_poll () at /usr/lib/libpulse.so.0
#3  0x00007f8abd3d2d8e in pa_mainloop_iterate () at /usr/lib/libpulse.so.0
#4  0x00007f8abd3d2e40 in pa_mainloop_run () at /usr/lib/libpulse.so.0
#5  0x00007f8abd3e0e29 in  () at /usr/lib/libpulse.so.0
#6  0x00007f8abcd70fe8 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#7  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 17 (Thread 0x7f89d586e700 (LWP 16447)):
#0  0x00007f8ac36271e4 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f8ac35e0f9b in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f8ac35e18db in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f8ac35e1acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f8ac913109b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f8ac90da8ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f8ac8efca73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f8acc035025 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7f89d67fc700 (LWP 14617)):
#0  0x00007f8ac7dbc756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f8ac8f0258b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f8a0e0cb1d0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f8a0e0cf9d8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f8a0e0cfa32 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f8a0e0cd249 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7f89d6ffd700 (LWP 14616)):
#0  0x00007f8ac7dbc756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f8ac8f0258b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f8a0e0cb1d0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f8a0e0cf9d8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f8a0e0cfa32 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f8a0e0cd249 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7f89d77fe700 (LWP 14615)):
#0  0x00007f8ac7dbc756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f8ac8f0258b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f8a0e0cb1d0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f8a0e0cf9d8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f8a0e0cfa32 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f8a0e0cd249 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7f89d7fff700 (LWP 14614)):
#0  0x00007f8ac7dbc756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f8ac8f0258b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f8a0e0cb1d0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f8a0e0cf9d8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f8a0e0cfa32 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f8a0e0cfa32 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007f8a0e0cd249 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#11 0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7f89e8f5b700 (LWP 14613)):
#0  0x00007f8ac7dbc756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f8ac8f0258b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f8a0e0cb1d0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f8a0e0cf9d8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f8a0e0cfa32 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f8a0e0cd249 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7f89e975c700 (LWP 14612)):
#0  0x00007f8ac7dbc756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f8ac8f0258b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f8a0e0cb1d0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f8a0e0cf9d8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f8a0e0cfa32 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f8a0e0cfa32 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007f8a0e0cd249 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#11 0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7f89e9f5d700 (LWP 14611)):
#0  0x00007f8ac7dbc756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f8ac8f0258b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f8a0e0cb1d0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f8a0e0cf9d8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f8a0e0cfa32 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f8a0e0cd249 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7f89fd486700 (LWP 14610)):
#0  0x00007f8ac7dbc756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f8ac8f0258b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f8a0e0cb1d0 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007f8a0e0cf9d8 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007f8a0e0cfa32 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007f8a0e0cfa32 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007f8a0e0cfa32 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007f8a0e0cfa32 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007f8a0e0ca263 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007f8a0e0cd249 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#15 0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#16 0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f89ff89c700 (LWP 1303)):
#0  0x00007f8ac35de932 in  () at /usr/lib/libglib-2.0.so.0
#1  0x00007f8ac35e0e2b in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f8ac35e18db in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f8ac35e1acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f8ac913109b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f8ac90da8ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f8ac8efca73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f8a0223f0a7 in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#8  0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f8a1594e700 (LWP 1204)):
#0  0x00007f8ac36271e4 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f8ac35e185d in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f8ac35e1acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f8ac913109b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f8ac90da8ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f8ac8efca73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f8accbe8fd6 in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f8aa9f4f700 (LWP 1167)):
#0  0x00007f8ac7dbc756 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f8ace8dc234 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f8ace8dc279 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f8aabbb3700 (LWP 1041)):
#0  0x00007f8ac880a67d in poll () at /usr/lib/libc.so.6
#1  0x00007f8ac35e19b6 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f8ac35e1acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f8ac913109b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f8ac90da8ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f8ac8efca73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f8acc035025 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f8ab1783700 (LWP 997)):
#0  0x00007f8ac36271c9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f8ac35e09b4 in g_main_context_release () at /usr/lib/libglib-2.0.so.0
#2  0x00007f8ac35e196a in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f8ac35e1acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f8ac913109b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f8ac90da8ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f8ac8efca73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f8acc035025 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f8ab31cb700 (LWP 961)):
#0  0x00007f8ac36271c9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f8ac35e0e99 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f8ac35e18db in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f8ac35e1acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f8ac913109b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f8ac90da8ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f8ac8efca73 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f8ac9c81125 in  () at /usr/lib/libQt5DBus.so.5
#8  0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f8ab9369700 (LWP 951)):
#0  0x00007f8ac880a67d in poll () at /usr/lib/libc.so.6
#1  0x00007f8acd8028e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f8acd804679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f8abb8db239 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f8ac8f016d8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f8ac7db62e7 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f8ac881454f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f8acf130800 (LWP 939)):
[KCrash Handler]
#6  0x00007f8ac90a2540 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f8ac90a2819 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f8ac90aa3f9 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f8ac9107d79 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#10 0x00007f8ac917f4b4 in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#11 0x00007f8ac9083d9b in QAbstractItemModel::endRemoveRows() () at /usr/lib/libQt5Core.so.5
#12 0x00007f8a0c1b44ab in  () at /usr/lib/libtaskmanager.so.6
#13 0x00007f8a0c1b76f9 in  () at /usr/lib/libtaskmanager.so.6
#14 0x00007f8ac9107d79 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#15 0x00007f8ac917f444 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#16 0x00007f8ac9083643 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/libQt5Core.so.5
#17 0x00007f8ac90a7b45 in  () at /usr/lib/libQt5Core.so.5
#18 0x00007f8ac90a8926 in  () at /usr/lib/libQt5Core.so.5
#19 0x00007f8ac90aa478 in  () at /usr/lib/libQt5Core.so.5
#20 0x00007f8ac9107d79 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#21 0x00007f8ac917f1ac in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /usr/lib/libQt5Core.so.5
#22 0x00007f8a0fb90ae6 in  () at /usr/lib/libKF5ItemModels.so.5
#23 0x00007f8ac9107d79 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#24 0x00007f8ac917f1ac in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /usr/lib/libQt5Core.so.5
#25 0x00007f8ac909bfc2 in  () at /usr/lib/libQt5Core.so.5
#26 0x00007f8ac909dc18 in  () at /usr/lib/libQt5Core.so.5
#27 0x00007f8ac9107d79 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#28 0x00007f8ac917f1ac in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /usr/lib/libQt5Core.so.5
#29 0x00007f8a0c1ce4ba in TaskManager::XWindowTasksModel::Private::dataChanged(unsigned long long, QVector<int> const&) () at /usr/lib/libtaskmanager.so.6
#30 0x00007f8a0c1d0f80 in TaskManager::XWindowTasksModel::Private::windowChanged(unsigned long long, QFlags<NET::Property>, QFlags<NET::Property2>) () at /usr/lib/libtaskmanager.so.6
#31 0x00007f8a0c1d0fec in  () at /usr/lib/libtaskmanager.so.6
#32 0x00007f8ac91080ee in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#33 0x00007f8acbb478f8 in KWindowSystem::windowChanged(unsigned long long, QFlags<NET::Property>, QFlags<NET::Property2>) () at /usr/lib/libKF5WindowSystem.so.5
#34 0x00007f8ab1ba35cf in  () at /usr/lib/qt/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#35 0x00007f8ac90d958f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib/libQt5Core.so.5
#36 0x00007f8abb8dc974 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib/libQt5XcbQpa.so.5
#37 0x00007f8abb8dd655 in QXcbConnection::processXcbEvents() () at /usr/lib/libQt5XcbQpa.so.5
#38 0x00007f8ac9108bd9 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#39 0x00007f8aca04a34c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#40 0x00007f8aca051b61 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#41 0x00007f8ac90dc470 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#42 0x00007f8ac90debfd in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#43 0x00007f8ac9130c73 in  () at /usr/lib/libQt5Core.so.5
#44 0x00007f8ac35e17b7 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#45 0x00007f8ac35e1a20 in  () at /usr/lib/libglib-2.0.so.0
#46 0x00007f8ac35e1acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#47 0x00007f8ac913107f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#48 0x00007f8ac90da8ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#49 0x00007f8ac90e2e14 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#50 0x000000000041ca42 in  ()
#51 0x00007f8ac8748511 in __libc_start_main () at /usr/lib/libc.so.6
#52 0x000000000041cdca in _start ()

Reported using DrKonqi