Application: plasmashell (5.13.5)

Qt Version: 5.11.1
Frameworks Version: 5.49.0
Operating System: Linux 4.18.0-2-amd64 x86_64
Distribution: Debian GNU/Linux testing (buster)

-- Information about the crash:
- What I was doing when the application crashed:
Opened classic app menu, moved to submenu Internet or something simular, then plasmashell crashed

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".
[Current thread is 1 (Thread 0x7f9b45a29080 (LWP 13652))]

Thread 20 (Thread 0x7f9a5af5e700 (LWP 13797)):
#0  0x00007f9b4f175e6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x557c2a1a4984) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9b4f175e6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x557c2a1a4930, cond=0x557c2a1a4958) at pthread_cond_wait.c:502
#2  0x00007f9b4f175e6c in __pthread_cond_wait (cond=0x557c2a1a4958, mutex=0x557c2a1a4930) at pthread_cond_wait.c:655
#3  0x00007f9b4f5d64fb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b511db279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f9b511db4da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f16ff2a in start_thread (arg=0x7f9a5af5e700) at pthread_create.c:463
#8  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f9a62c85700 (LWP 19008)):
#0  0x00007f9b4f175e6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x557c2b5b5d40) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9b4f175e6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x557c2b5b5cf0, cond=0x557c2b5b5d18) at pthread_cond_wait.c:502
#2  0x00007f9b4f175e6c in __pthread_cond_wait (cond=0x557c2b5b5d18, mutex=0x557c2b5b5cf0) at pthread_cond_wait.c:655
#3  0x00007f9b4f5d64fb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b511db279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f9b511db4da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f16ff2a in start_thread (arg=0x7f9a62c85700) at pthread_create.c:463
#8  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f9a5bfff700 (LWP 21450)):
#0  0x00007f9b4f175e6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x557c2a159a14) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9b4f175e6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x557c2a1599c0, cond=0x557c2a1599e8) at pthread_cond_wait.c:502
#2  0x00007f9b4f175e6c in __pthread_cond_wait (cond=0x557c2a1599e8, mutex=0x557c2a1599c0) at pthread_cond_wait.c:655
#3  0x00007f9b4f5d64fb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b511db279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f9b511db4da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f16ff2a in start_thread (arg=0x7f9a5bfff700) at pthread_create.c:463
#8  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f9a6397c700 (LWP 12004)):
#0  0x00007f9b4f175e6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f9a8c2d5214) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9b4f175e6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f9a8c2d51c0, cond=0x7f9a8c2d51e8) at pthread_cond_wait.c:502
#2  0x00007f9b4f175e6c in __pthread_cond_wait (cond=0x7f9a8c2d51e8, mutex=0x7f9a8c2d51c0) at pthread_cond_wait.c:655
#3  0x00007f9b4f5d64fb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b511db279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f9b511db4da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f16ff2a in start_thread (arg=0x7f9a6397c700) at pthread_create.c:463
#8  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f9a89069700 (LWP 22883)):
#0  0x00007f9b4f175e6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x557c2ab68e74) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9b4f175e6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x557c2ab68e20, cond=0x557c2ab68e48) at pthread_cond_wait.c:502
#2  0x00007f9b4f175e6c in __pthread_cond_wait (cond=0x557c2ab68e48, mutex=0x557c2ab68e20) at pthread_cond_wait.c:655
#3  0x00007f9b4f5d64fb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b511db279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f9b511db4da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f16ff2a in start_thread (arg=0x7f9a89069700) at pthread_create.c:463
#8  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f9a88824700 (LWP 14489)):
#0  0x00007f9b4f175e6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x557c2a3b2280) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9b4f175e6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x557c2a3b2230, cond=0x557c2a3b2258) at pthread_cond_wait.c:502
#2  0x00007f9b4f175e6c in __pthread_cond_wait (cond=0x557c2a3b2258, mutex=0x557c2a3b2230) at pthread_cond_wait.c:655
#3  0x00007f9b4f5d64fb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b511db279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f9b511db4da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f16ff2a in start_thread (arg=0x7f9a88824700) at pthread_create.c:463
#8  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f9a89e6a700 (LWP 28703)):
#0  0x00007f9b4f175e6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x557c2a4535b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9b4f175e6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x557c2a453560, cond=0x557c2a453588) at pthread_cond_wait.c:502
#2  0x00007f9b4f175e6c in __pthread_cond_wait (cond=0x557c2a453588, mutex=0x557c2a453560) at pthread_cond_wait.c:655
#3  0x00007f9b4f5d64fb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b511db279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f9b511db4da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f16ff2a in start_thread (arg=0x7f9a89e6a700) at pthread_create.c:463
#8  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f9a8a6fe700 (LWP 28212)):
#0  0x00007f9b4f175e6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x557c2a4ea224) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9b4f175e6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x557c2a4ea1d0, cond=0x557c2a4ea1f8) at pthread_cond_wait.c:502
#2  0x00007f9b4f175e6c in __pthread_cond_wait (cond=0x557c2a4ea1f8, mutex=0x557c2a4ea1d0) at pthread_cond_wait.c:655
#3  0x00007f9b4f5d64fb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b511db279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f9b511db4da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f16ff2a in start_thread (arg=0x7f9a8a6fe700) at pthread_create.c:463
#8  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f9a8b3ff700 (LWP 26892)):
#0  0x00007f9b4f175e6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x557c2a094780) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9b4f175e6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x557c2a094730, cond=0x557c2a094758) at pthread_cond_wait.c:502
#2  0x00007f9b4f175e6c in __pthread_cond_wait (cond=0x557c2a094758, mutex=0x557c2a094730) at pthread_cond_wait.c:655
#3  0x00007f9b4f5d64fb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b511db279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f9b511db4da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f16ff2a in start_thread (arg=0x7f9a8b3ff700) at pthread_create.c:463
#8  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f9a92745700 (LWP 14129)):
#0  0x00007f9b4f175e6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x557c298660a4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9b4f175e6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x557c29866050, cond=0x557c29866078) at pthread_cond_wait.c:502
#2  0x00007f9b4f175e6c in __pthread_cond_wait (cond=0x557c29866078, mutex=0x557c29866050) at pthread_cond_wait.c:655
#3  0x00007f9b4f5d64fb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b511db279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f9b511db4da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f16ff2a in start_thread (arg=0x7f9a92745700) at pthread_create.c:463
#8  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f9a937ff700 (LWP 14128)):
#0  0x00007f9b4f175e6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x557c295c3084) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9b4f175e6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x557c295c3030, cond=0x557c295c3058) at pthread_cond_wait.c:502
#2  0x00007f9b4f175e6c in __pthread_cond_wait (cond=0x557c295c3058, mutex=0x557c295c3030) at pthread_cond_wait.c:655
#3  0x00007f9b4f5d64fb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b511db279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f9b511db4da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f16ff2a in start_thread (arg=0x7f9a937ff700) at pthread_create.c:463
#8  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f9aa7fff700 (LWP 13864)):
#0  0x00007ffc8f31baf2 in clock_gettime ()
#1  0x00007f9b4f2d88b6 in __GI___clock_gettime (clock_id=1, tp=0x7f9aa7ffea20) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f9b4f7cfb71 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f9b4f7ce3a9 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b4f7ce9a5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f9b4f7cffce in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f9b4c5aa379 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f9b4c5aad7b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f9b4c5aaf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f9b4f7d024b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f9b4f77d25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f9b4f5cc176 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f9b5115c396 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f9b4f16ff2a in start_thread (arg=0x7f9aa7fff700) at pthread_create.c:463
#15 0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f9aa77fe700 (LWP 13799)):
#0  0x00007f9b4f175e6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x557c2842f614) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9b4f175e6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x557c2842f5c0, cond=0x557c2842f5e8) at pthread_cond_wait.c:502
#2  0x00007f9b4f175e6c in __pthread_cond_wait (cond=0x557c2842f5e8, mutex=0x557c2842f5c0) at pthread_cond_wait.c:655
#3  0x00007f9b4f5d64fb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b511db279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f9b511db4da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f16ff2a in start_thread (arg=0x7f9aa77fe700) at pthread_create.c:463
#8  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f9b31489700 (LWP 13756)):
#0  0x00007f9b4f7d0057 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f9b4c5aa821 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9b4c5aadf0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9b4c5aaf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f9b4f7d024b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f9b4f77d25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f9b4f5cc176 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f9b4f16ff2a in start_thread (arg=0x7f9b31489700) at pthread_create.c:463
#9  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f9b31c8a700 (LWP 13755)):
#0  0x00007f9b4f2c0739 in __GI___poll (fds=0x7f9aa0004dd0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f9b4c5aae46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9b4c5aaf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9b4f7d024b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b4f77d25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f9b4f5cc176 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f9b320d09d5 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#7  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f9b4f16ff2a in start_thread (arg=0x7f9b31c8a700) at pthread_create.c:463
#9  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f9b40a43700 (LWP 13728)):
#0  0x00007f9b4f175e6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f9b51bb6fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9b4f175e6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f9b51bb6f68, cond=0x7f9b51bb6f90) at pthread_cond_wait.c:502
#2  0x00007f9b4f175e6c in __pthread_cond_wait (cond=0x7f9b51bb6f90, mutex=0x7f9b51bb6f68) at pthread_cond_wait.c:655
#3  0x00007f9b51abfe2a in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f9b51abfe49 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f9b4f16ff2a in start_thread (arg=0x7f9b40a43700) at pthread_create.c:463
#6  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f9b42094700 (LWP 13713)):
#0  0x00007f9b4f2c0739 in __GI___poll (fds=0x7f9b380025e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f9b4c5aae46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9b4c5aaf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9b4f7d024b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9b4f77d25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f9b4f5cc176 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f9b50ed7c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f9b4f16ff2a in start_thread (arg=0x7f9b42094700) at pthread_create.c:463
#9  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f9b432a5700 (LWP 13687)):
#0  0x00007f9b4f5c8f2a in QMutex::unlock() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f9b4f7d0171 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f9b4c5aa379 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9b4c5aad7b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f9b4c5aaf6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f9b4f7d024b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f9b4f77d25b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9b4f5cc176 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f9b508da545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f9b4f16ff2a in start_thread (arg=0x7f9b432a5700) at pthread_create.c:463
#11 0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f9b44904700 (LWP 13672)):
#0  0x00007f9b4f2c0739 in __GI___poll (fds=0x7f9b44903c38, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f9b515adcf7 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f9b515af91a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f9b454316d9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f9b4f5d5d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f9b4f16ff2a in start_thread (arg=0x7f9b44904700) at pthread_create.c:463
#6  0x00007f9b4f2caedf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f9b45a29080 (LWP 13652)):
[KCrash Handler]
#6  0x0000000000000090 in  ()
#7  0x00007f9b4f7a7e07 in QMetaObject::activate(QObject*, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f9b50cce7e0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f9b50f17a1e in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f9b50f1e6fc in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f9b50f1e9db in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f9b4f7a789c in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f9b4f73230d in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f9aa629ba4c in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#15 0x00007f9aa62b8673 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#16 0x00007f9aa62bb7db in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#17 0x00007f9b50e29bb6 in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#18 0x00007f9b50e40092 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#19 0x00007f9b50e3d32a in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#20 0x00007f9b50df3f7d in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#21 0x00007f9b50df493e in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#22 0x00007f9b50df4a34 in QV4::QObjectWrapper::put(QV4::Managed*, QV4::String*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#23 0x00007f9b50e079dc in QV4::Runtime::method_storeProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#24 0x00007f9b50e132b9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#25 0x00007f9aa536d48f in  ()
#26 0x00007f9b414554f8 in  ()
#27 0x00007f9b41455508 in  ()
#28 0x0000557c279ec660 in  ()
#29 0x0000000000000000 in  ()

Reported using DrKonqi