Application: plasmashell (5.16.1)

Qt Version: 5.12.4
Frameworks Version: 5.59.0
Operating System: Linux 5.1.12-arch1-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

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

I opened spotify (Plasma Wayland Session) and then procceeded to play around with opening widgets and the menu, while the disk was very active. I cannot reliably reproduce the bug, since it only sometimes happens when I open an I/O heavy application for the first time (cold cache) and then play around (or not) with the taskbar. This time plasma recovered by itself. 

Maybe unrelated to this specific bug but plasmashell crashes frequently on my system using wayland on seemingly random occasions (but usually with heavy background I/O I think), while not recovering by itself (I have to open krunner manually and run plasmashell from there). This rarely (if ever) happens using the X session and i haven't found a way to reproduce the crashes.

If you need any more information please tell me.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f62baab7880 (LWP 3484))]

Thread 36 (Thread 0x7f621156e700 (LWP 3928)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62bf8f4cf0 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f62bf8f4de2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f62c16ca4cd in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f62c16ca73c in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f62bf8eebf0 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 35 (Thread 0x7f6211d6f700 (LWP 3927)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 34 (Thread 0x7f62127fc700 (LWP 3926)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62bf8f4cf0 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f62bf8f4de2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f62c16ca4cd in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f62c16ca73c in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f62bf8eebf0 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 33 (Thread 0x7f6212ffd700 (LWP 3925)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 32 (Thread 0x7f62137fe700 (LWP 3897)):
#0  0x00007f62bf58212c in recv () at /usr/lib/libc.so.6
#1  0x00007f62bee129c7 in  () at /usr/lib/libQt5Network.so.5
#2  0x00007f62bee02d54 in  () at /usr/lib/libQt5Network.so.5
#3  0x00007f62bee03593 in QNetworkInterface::allInterfaces() () at /usr/lib/libQt5Network.so.5
#4  0x00007f62435514ff in  () at /usr/lib/qt/plugins/bearer/libqgenericbearer.so
#5  0x00007f62bfac1d73 in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const () at /usr/lib/libQt5Core.so.5
#6  0x00007f62bfac3974 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () at /usr/lib/libQt5Core.so.5
#7  0x00007f62beded2cf in QNetworkConfigurationManagerPrivate::pollEngines() () at /usr/lib/libQt5Network.so.5
#8  0x00007f62bee84d7a in  () at /usr/lib/libQt5Network.so.5
#9  0x00007f62bfadf2f9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#10 0x00007f62bfaec3f8 in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#11 0x00007f62bfadfcd5 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#12 0x00007f62bfab37a6 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#13 0x00007f62bfb0a60d in QTimerInfoList::activateTimers() () at /usr/lib/libQt5Core.so.5
#14 0x00007f62bfb0aea2 in  () at /usr/lib/libQt5Core.so.5
#15 0x00007f62bdc5f90f in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#16 0x00007f62bdc61869 in  () at /usr/lib/libglib-2.0.so.0
#17 0x00007f62bdc618ae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#18 0x00007f62bfb0b263 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#19 0x00007f62bfab23ac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#20 0x00007f62bf8ed9c5 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#21 0x00007f62bf8eebf0 in  () at /usr/lib/libQt5Core.so.5
#22 0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#23 0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 31 (Thread 0x7f6235f99700 (LWP 3801)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62bf8f4cf0 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f62bf8f4de2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f62c16ca4cd in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f62c16ca73c in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f62bf8eebf0 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 30 (Thread 0x7f623679a700 (LWP 3800)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 29 (Thread 0x7f6235698700 (LWP 3718)):
[KCrash Handler]
#6  0x00007f62bf3cae94 in wl_proxy_marshal_constructor () at /usr/lib/libwayland-client.so.0
#7  0x00007f62ba6f519b in QtWaylandClient::QWaylandWindow::handleUpdate() () at /usr/lib/libQt5WaylandClient.so.5
#8  0x00007f62b399bd78 in  () at /usr/lib/qt/plugins/wayland-graphics-integration-client/libqt-plugin-wayland-egl.so
#9  0x00007f62bfed1142 in QOpenGLContext::swapBuffers(QSurface*) () at /usr/lib/libQt5Gui.so.5
#10 0x00007f62c16c682e in  () at /usr/lib/libQt5Quick.so.5
#11 0x00007f62c16ca6f8 in  () at /usr/lib/libQt5Quick.so.5
#12 0x00007f62bf8eebf0 in  () at /usr/lib/libQt5Core.so.5
#13 0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#14 0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 28 (Thread 0x7f6236f9b700 (LWP 3717)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 27 (Thread 0x7f6237bf6700 (LWP 3673)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62bf8f4cf0 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f62bf8f4de2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f62c16ca4cd in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f62c16ca73c in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f62bf8eebf0 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 26 (Thread 0x7f623d169700 (LWP 3672)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 25 (Thread 0x7f6278b07700 (LWP 3660)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62bf8f4cf0 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f62bf8f4de2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f62c16ca4cd in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f62c16ca73c in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f62bf8eebf0 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 24 (Thread 0x7f6279308700 (LWP 3658)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 23 (Thread 0x7f6279b09700 (LWP 3656)):
#0  0x00007f62bf576497 in poll () at /usr/lib/libc.so.6
#1  0x00007f62bdc617c0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f62bdc618ae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f62bfb0b27c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f62bfab23ac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f62bf8ed9c5 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f62c1641feb in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007f62bf8eebf0 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 22 (Thread 0x7f627b7fe700 (LWP 3655)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 21 (Thread 0x7f627bfff700 (LWP 3654)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 20 (Thread 0x7f6280ff9700 (LWP 3653)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 19 (Thread 0x7f62817fa700 (LWP 3652)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 18 (Thread 0x7f6281ffb700 (LWP 3651)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 17 (Thread 0x7f62827fc700 (LWP 3650)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7f6282ffd700 (LWP 3649)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7f62837fe700 (LWP 3648)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7f6283fff700 (LWP 3647)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7f62a4b23700 (LWP 3646)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7f62a5324700 (LWP 3645)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7f62a5b25700 (LWP 3644)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7f62a6326700 (LWP 3643)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7f62a6b27700 (LWP 3642)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f62a7328700 (LWP 3641)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f62a7b29700 (LWP 3640)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f62b0fbb700 (LWP 3639)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f62b17bc700 (LWP 3638)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f62b2112700 (LWP 3637)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62b2bd76bc in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007f62b2bd72b8 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f62b8dd9700 (LWP 3596)):
#0  0x00007f62bf576497 in poll () at /usr/lib/libc.so.6
#1  0x00007f62bdc617c0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f62bdc618ae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f62bfb0b27c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f62bfab23ac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f62bf8ed9c5 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f62c1375969 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f62bf8eebf0 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f62ba018700 (LWP 3525)):
#0  0x00007f62bf571fbc in read () at /usr/lib/libc.so.6
#1  0x00007f62bdc0f961 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f62bdc5ff70 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007f62bdc61766 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f62bdc618ae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f62bfb0b27c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f62bfab23ac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f62bf8ed9c5 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007f62c03c5b37 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007f62bf8eebf0 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f62bebcc57f in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f62bf580f13 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f62baab7880 (LWP 3484)):
#0  0x00007f62bebd23c5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f62bf8f4cf0 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f62bf8f4de2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f62c16c89e3 in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f62c16c9aae in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f62c16ca11b in  () at /usr/lib/libQt5Quick.so.5
#6  0x00007f62bfe9f10d in QWindow::event(QEvent*) () at /usr/lib/libQt5Gui.so.5
#7  0x00007f62c172b9bc in QQuickWindow::event(QEvent*) () at /usr/lib/libQt5Quick.so.5
#8  0x00007f62c1e8552c in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/libKF5PlasmaQuick.so.5
#9  0x00007f62b0322206 in  () at /usr/lib/qt/qml/org/kde/plasma/core/libcorebindingsplugin.so
#10 0x00007f62c0630485 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#11 0x00007f62c06399b1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#12 0x00007f62bfab3782 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#13 0x00007f62bfe95815 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/libQt5Gui.so.5
#14 0x00007f62bfe95a48 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/libQt5Gui.so.5
#15 0x00007f62bfe6f68c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#16 0x00007f62ba72a6f1 in  () at /usr/lib/libQt5WaylandClient.so.5
#17 0x00007f62bdc5f90f in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#18 0x00007f62bdc61869 in  () at /usr/lib/libglib-2.0.so.0
#19 0x00007f62bdc618ae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#20 0x00007f62bfb0b263 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#21 0x00007f62bfab23ac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#22 0x00007f62bfaba056 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#23 0x00005655464d3db8 in  ()
#24 0x00007f62bf4abee3 in __libc_start_main () at /usr/lib/libc.so.6
#25 0x00005655464d426e in _start ()
[Inferior 1 (process 3484) detached]

Reported using DrKonqi