Application: plasmashell (5.17.4)

Qt Version: 5.13.2
Frameworks Version: 5.65.0
Operating System: Linux 5.0.0-37-generic x86_64
Distribution: KDE neon User Edition 5.17

-- Information about the crash:
- What I was doing when the application crashed: I was watching a video in YouTube in the current google-chrome-stable build.

- Unusual behavior I noticed: The Plasma panel randomly disappeared and reappeared.

The crash does not seem to be reproducible.

-- 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 0x7f5bfc4dee40 (LWP 1304))]

Thread 25 (Thread 0x7f5b02ffd700 (LWP 4872)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d180951dd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d180951d80, cond=0x55d180951da8) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d180951da8, mutex=0x55d180951d80) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bbb77b845 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f5bbb77f6f8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f5bbb77ab0d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f5bbb77d5bb in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5bf322e6db in start_thread (arg=0x7f5b02ffd700) at pthread_create.c:463
#11 0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7f5b037fe700 (LWP 4871)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d180951dd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d180951d80, cond=0x55d180951da8) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d180951da8, mutex=0x55d180951d80) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bbb77b845 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f5bbb77f6f8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f5bbb77ab0d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f5bbb77d5bb in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5bf322e6db in start_thread (arg=0x7f5b037fe700) at pthread_create.c:463
#11 0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f5b03fff700 (LWP 4870)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d180951dd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d180951d80, cond=0x55d180951da8) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d180951da8, mutex=0x55d180951d80) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bbb77b845 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f5bbb77f6f8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f5bbb77ab0d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f5bbb77d5bb in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5bf322e6db in start_thread (arg=0x7f5b03fff700) at pthread_create.c:463
#11 0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f5b08811700 (LWP 4869)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d180951dd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d180951d80, cond=0x55d180951da8) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d180951da8, mutex=0x55d180951d80) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bbb77b845 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f5bbb77f6f8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f5bbb77ab0d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f5bbb77d5bb in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5bf322e6db in start_thread (arg=0x7f5b08811700) at pthread_create.c:463
#11 0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f5b09012700 (LWP 4868)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d180951dd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d180951d80, cond=0x55d180951da8) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d180951da8, mutex=0x55d180951d80) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bbb77b845 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f5bbb77f6f8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f5bbb77ab0d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f5bbb77d5bb in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5bf322e6db in start_thread (arg=0x7f5b09012700) at pthread_create.c:463
#11 0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f5b57fff700 (LWP 4867)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d180951dd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d180951d80, cond=0x55d180951da8) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d180951da8, mutex=0x55d180951d80) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bbb77b845 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f5bbb77f6f8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f5bbb77ab0d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f5bbb77d5bb in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5bf322e6db in start_thread (arg=0x7f5b57fff700) at pthread_create.c:463
#11 0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f5b0ffff700 (LWP 4866)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d180951dd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d180951d80, cond=0x55d180951da8) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d180951da8, mutex=0x55d180951d80) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bbb77b845 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f5bbb77f6f8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f5bbb77ab0d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f5bbb77d5bb in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5bf322e6db in start_thread (arg=0x7f5b0ffff700) at pthread_create.c:463
#11 0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f5b0f7fe700 (LWP 4865)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d180951dd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d180951d80, cond=0x55d180951da8) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d180951da8, mutex=0x55d180951d80) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bbb77b845 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#6  0x00007f5bbb77f6f8 in  () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#7  0x00007f5bbb77ab0d in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#8  0x00007f5bbb77d5bb in ThreadWeaver::Thread::run() () at /usr/lib/x86_64-linux-gnu/libKF5ThreadWeaver.so.5
#9  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5bf322e6db in start_thread (arg=0x7f5b0f7fe700) at pthread_create.c:463
#11 0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f5b66170700 (LWP 3337)):
#0  0x00007f5bf5bedbf9 in __GI___poll (fds=0x7f5b6005c880, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f5bb8452481 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f5bb8443e40 in pa_mainloop_poll () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f5bb84444d0 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f5bb8444560 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f5bb84523c9 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f5bb3ba5318 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#7  0x00007f5bf322e6db in start_thread (arg=0x7f5b66170700) at pthread_create.c:463
#8  0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f5b9d1d7700 (LWP 3336)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d190587624) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d1905875d0, cond=0x55d1905875f8) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d1905875f8, mutex=0x55d1905875d0) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bfa325ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f5bfa3262fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5bf322e6db in start_thread (arg=0x7f5b9d1d7700) at pthread_create.c:463
#9  0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f5b65543700 (LWP 3240)):
#0  0x00007f5bf5be90b4 in __GI___libc_read (fd=25, buf=0x7f5b65542b90, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f5befdac2d0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5befd670b7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5befd67570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5befd676dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5bf6540b9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5bf64e106a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5bf62fc3aa in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f5bf322e6db in start_thread (arg=0x7f5b65543700) at pthread_create.c:463
#10 0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f5b67fff700 (LWP 1917)):
#0  0x00007f5bf5bedbf9 in __GI___poll (fds=0x55d18aa66410, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f5befd675c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5befd67962 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5bbaff70e6 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f5befd8f195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5bf322e6db in start_thread (arg=0x7f5b67fff700) at pthread_create.c:463
#6  0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f5b5615b700 (LWP 1916)):
#0  0x00007f5befdad649 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f5befd66d11 in g_main_context_query () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5befd67547 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5befd676dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5befd67721 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5befd8f195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f5bf322e6db in start_thread (arg=0x7f5b5615b700) at pthread_create.c:463
#7  0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f5b572cd700 (LWP 1915)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d19342e664) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d19342e610, cond=0x55d19342e638) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d19342e638, mutex=0x55d19342e610) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bfa325ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f5bfa3262fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5bf322e6db in start_thread (arg=0x7f5b572cd700) at pthread_create.c:463
#9  0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f5b9ffff700 (LWP 1914)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d183e13af0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d183e13aa0, cond=0x55d183e13ac8) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d183e13ac8, mutex=0x55d183e13aa0) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bfa325ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f5bfa3262fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5bf322e6db in start_thread (arg=0x7f5b9ffff700) at pthread_create.c:463
#9  0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f5b54e66700 (LWP 1899)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d17e304f10) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d17e304ec0, cond=0x55d17e304ee8) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d17e304ee8, mutex=0x55d17e304ec0) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bfa325ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f5bfa3262fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5bf322e6db in start_thread (arg=0x7f5b54e66700) at pthread_create.c:463
#9  0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f5b9d9dd700 (LWP 1659)):
#0  0x00007f5bb3b7d896 in pa_fdsem_after_poll () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#1  0x00007f5bb3b9535d in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#2  0x00007f5bb8444108 in pa_mainloop_dispatch () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f5bb84444de in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f5bb8444560 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f5bb84523c9 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f5bb3ba5318 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#7  0x00007f5bf322e6db in start_thread (arg=0x7f5b9d9dd700) at pthread_create.c:463
#8  0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f5b9e556700 (LWP 1601)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d180907204) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d1809071b0, cond=0x55d1809071d8) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d1809071d8, mutex=0x55d1809071b0) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bfa325ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f5bfa3262fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5bf322e6db in start_thread (arg=0x7f5b9e556700) at pthread_create.c:463
#9  0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f5ba7558700 (LWP 1483)):
#0  0x00007f5befdad664 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f5befd674ee in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5befd676dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5bf6540b9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf64e106a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bf62fc3aa in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5ba9eb6407 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5bf322e6db in start_thread (arg=0x7f5ba7558700) at pthread_create.c:463
#9  0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f5bc1fd1700 (LWP 1462)):
#0  0x00007f5befdad649 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f5befd66995 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5befd674fb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5befd676dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5bf6540b9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bf64e106a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5bf62fc3aa in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5bfa29fac6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f5bf322e6db in start_thread (arg=0x7f5bc1fd1700) at pthread_create.c:463
#10 0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f5bc3042700 (LWP 1461)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d17be83720) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d17be836d0, cond=0x55d17be836f8) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d17be836f8, mutex=0x55d17be836d0) at pthread_cond_wait.c:655
#3  0x00007f5bf6304aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5bf6304df9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5bfa325ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f5bfa3262fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5bf322e6db in start_thread (arg=0x7f5bc3042700) at pthread_create.c:463
#9  0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f5bd18b4700 (LWP 1454)):
#0  0x00007f5bf32349f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d17b858bfc) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f5bf32349f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d17b858ba8, cond=0x55d17b858bd0) at pthread_cond_wait.c:502
#2  0x00007f5bf32349f3 in __pthread_cond_wait (cond=0x55d17b858bd0, mutex=0x55d17b858ba8) at pthread_cond_wait.c:655
#3  0x00007f5bd2b872cb in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f5bd2b86ff7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f5bf322e6db in start_thread (arg=0x7f5bd18b4700) at pthread_create.c:463
#6  0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f5bdf390700 (LWP 1453)):
#0  0x00007f5bf5be90b4 in __GI___libc_read (fd=19, buf=0x7f5bdf38fb70, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f5befdac2d0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5befd670b7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5befd67570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5befd676dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5bf6540b9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5bf64e106a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5bf62fc3aa in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5bf9dcd815 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5bf322e6db in start_thread (arg=0x7f5bdf390700) at pthread_create.c:463
#11 0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f5be5501700 (LWP 1323)):
#0  0x00007f5befdad229 in g_private_get () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f5befd8f680 in g_thread_self () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5befd6645c in g_main_context_acquire () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5befd67485 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5befd676dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5bf6540b9b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5bf64e106a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5bf62fc3aa in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5bf75f50e5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f5bf62fdb52 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5bf322e6db in start_thread (arg=0x7f5be5501700) at pthread_create.c:463
#11 0x00007f5bf5bfa88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f5bfc4dee40 (LWP 1304)):
[KCrash Handler]
#6  0x00007f5bf9c5518e in QV4::QObjectWrapper::wrap(QV4::ExecutionEngine*, QObject*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f5bf9cf304c in QV4::ExecutionEngine::fromVariant(QVariant const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f5bf9c77199 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f5bf9c94d4e in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f5bf9c99cc6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f5bf9c291ec in QV4::Function::call(QV4::Value const*, QV4::Value const*, int, QV4::ExecutionContext const*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f5bf9d9c447 in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007f5bf9d41fb9 in QQmlBoundSignalExpression::evaluate(void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007f5bf9d4333b in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007f5bf9d7cc42 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007f5bf9d23f99 in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#17 0x00007f5bf65130f7 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f5bc109b48f in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#19 0x00007f5bc10af119 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#20 0x00007f5bf65138d5 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f5bc056c122 in Plasma::RunnerManager::matchesChanged(QList<Plasma::QueryMatch> const&) () at /usr/lib/x86_64-linux-gnu/libKF5Runner.so.5
#22 0x00007f5bc0570323 in  () at /usr/lib/x86_64-linux-gnu/libKF5Runner.so.5
#23 0x00007f5bf6514432 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f5bf7e4eeac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f5bf7e564b0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007f5bf64e2f08 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f5bf64e5827 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f5bf6541563 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f5befd67417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f5befd67650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f5befd676dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f5bf6540b7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f5bf64e106a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f5bf64ea3e0 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x000055d17a991cef in  ()
#36 0x00007f5bf5afab97 in __libc_start_main (main=0x55d17a991040, argc=1, argv=0x7ffc2497fb68, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc2497fb58) at ../csu/libc-start.c:310
#37 0x000055d17a991faa in _start ()

Possible duplicates by query: bug 415200, bug 415195, bug 415177, bug 415144, bug 415122.

Reported using DrKonqi