Application: plasmashell (5.12.4)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-20-generic x86_64
Distribution: Ubuntu 18.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I was pressing the disconnect button of the Ethernet interface after changing ip4 settings. The ethernet port was connected to my Raspberry Pi. I've tried to replicate it and sometimes it happened again. It also happened when I unpluged the cable from the Raspberry Pi and clicked the button before it disappeared. 

PS: I'm not native English speaker, so please understand possible grammar errors

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 0x7f93e8c28f00 (LWP 1633))]

Thread 21 (Thread 0x7f92c103a700 (LWP 16687)):
#0  0x00007f93e1a8b9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558ec9659f54) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f93e1a8b9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x558ec9659f00, cond=0x558ec9659f28) at pthread_cond_wait.c:502
#2  0x00007f93e1a8b9f3 in __pthread_cond_wait (cond=0x558ec9659f28, mutex=0x558ec9659f00) at pthread_cond_wait.c:655
#3  0x00007f93e290a59b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f93e668f548 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f93e668f9aa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f93e1a856db in start_thread (arg=0x7f92c103a700) at pthread_create.c:463
#8  0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f92c3fff700 (LWP 14051)):
#0  0x00007f93e1a8b9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f93c8032fd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f93e1a8b9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f93c8032f80, cond=0x7f93c8032fa8) at pthread_cond_wait.c:502
#2  0x00007f93e1a8b9f3 in __pthread_cond_wait (cond=0x7f93c8032fa8, mutex=0x7f93c8032f80) at pthread_cond_wait.c:655
#3  0x00007f93e290a59b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f93e668f548 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f93e668f9aa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f93e1a856db in start_thread (arg=0x7f92c3fff700) at pthread_create.c:463
#8  0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f92cabfe700 (LWP 4187)):
#0  0x00007ffd7bb2bb62 in clock_gettime ()
#1  0x00007f93e220eea6 in __GI___clock_gettime (clock_id=1, tp=0x7f92cabfdab0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f93e2b40221 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f93e2b3ea59 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f93e2b3f035 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f93e2b4067e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f93dcc9b998 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f93dcc9c36b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f93dcc9c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f93e2b4090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f93e2ae59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f93e290422a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f93e5a766f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f93e1a856db in start_thread (arg=0x7f92cabfe700) at pthread_create.c:463
#15 0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f92cbfff700 (LWP 4186)):
#0  0x00007f93e21ee0b4 in __GI___libc_read (fd=72, buf=0x7f92cbffeb30, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f93da6a6f55 in  () at /usr/lib/x86_64-linux-gnu/tls/libnvidia-tls.so.340.106
#2  0x00007f93dcce0960 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f93dcc9bf27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f93dcc9c3e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f93dcc9c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f93e2b4090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f93e2ae59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f93e290422a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f93e5a766f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f93e1a856db in start_thread (arg=0x7f92cbfff700) at pthread_create.c:463
#12 0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f92dd3f5700 (LWP 4184)):
#0  0x00007f93e1a8b9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f93c8021c40) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f93e1a8b9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f93c8021bf0, cond=0x7f93c8021c18) at pthread_cond_wait.c:502
#2  0x00007f93e1a8b9f3 in __pthread_cond_wait (cond=0x7f93c8021c18, mutex=0x7f93c8021bf0) at pthread_cond_wait.c:655
#3  0x00007f93e290a59b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f93e668f548 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f93e668f9aa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f93e1a856db in start_thread (arg=0x7f92dd3f5700) at pthread_create.c:463
#8  0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f92ddbf6700 (LWP 3265)):
#0  0x00007f93e1a8b9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f92d800e704) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f93e1a8b9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f92d800e6b0, cond=0x7f92d800e6d8) at pthread_cond_wait.c:502
#2  0x00007f93e1a8b9f3 in __pthread_cond_wait (cond=0x7f92d800e6d8, mutex=0x7f92d800e6b0) at pthread_cond_wait.c:655
#3  0x00007f93e290a59b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f93e668f548 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f93e668f9aa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f93e1a856db in start_thread (arg=0x7f92ddbf6700) at pthread_create.c:463
#8  0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f92de3f7700 (LWP 3264)):
#0  0x00007f93d50d2d93 in pa_mainloop_poll () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#1  0x00007f93d50d34a0 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f93d50d3530 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f93d50e1399 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f93d453f2a8 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#5  0x00007f93e1a856db in start_thread (arg=0x7f92de3f7700) at pthread_create.c:463
#6  0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f9305f1e700 (LWP 3263)):
#0  0x00007f93dcc9b327 in g_main_context_acquire () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f93dcc9c2f5 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f93dcc9c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f93e2b4090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f93e2ae59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f93e290422a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f93e5a766f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f93e1a856db in start_thread (arg=0x7f9305f1e700) at pthread_create.c:463
#9  0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f9304a9c700 (LWP 2536)):
#0  0x00007f93e1a8b9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558eca0a38d4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f93e1a8b9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x558eca0a3880, cond=0x558eca0a38a8) at pthread_cond_wait.c:502
#2  0x00007f93e1a8b9f3 in __pthread_cond_wait (cond=0x558eca0a38a8, mutex=0x558eca0a3880) at pthread_cond_wait.c:655
#3  0x00007f93e290a59b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f93e668f548 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f93e668f9aa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f93e1a856db in start_thread (arg=0x7f9304a9c700) at pthread_create.c:463
#8  0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f930571d700 (LWP 2500)):
[KCrash Handler]
#6  0x00007f93e665d640 in QSGSimpleTextureNode::texture() const () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f932bb11963 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kquickcontrolsaddons/libkquickcontrolsaddonsplugin.so
#8  0x00007f93e2b166cf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f93e66df8d0 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f93e668aa5c in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f93e668f968 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f93e1a856db in start_thread (arg=0x7f930571d700) at pthread_create.c:463
#14 0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f9306b1f700 (LWP 2411)):
#0  0x00007f93e1a8b9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558ec8ba16a4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f93e1a8b9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x558ec8ba1650, cond=0x558ec8ba1678) at pthread_cond_wait.c:502
#2  0x00007f93e1a8b9f3 in __pthread_cond_wait (cond=0x558ec8ba1678, mutex=0x558ec8ba1650) at pthread_cond_wait.c:655
#3  0x00007f93e290a59b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f93e668f548 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f93e668f9aa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f93e1a856db in start_thread (arg=0x7f9306b1f700) at pthread_create.c:463
#8  0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f9307fff700 (LWP 1844)):
#0  0x00007f93e1a8b9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558ec81c4414) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f93e1a8b9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x558ec81c43c0, cond=0x558ec81c43e8) at pthread_cond_wait.c:502
#2  0x00007f93e1a8b9f3 in __pthread_cond_wait (cond=0x558ec81c43e8, mutex=0x558ec81c43c0) at pthread_cond_wait.c:655
#3  0x00007f93e290a59b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f93e668f548 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f93e668f9aa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f93e1a856db in start_thread (arg=0x7f9307fff700) at pthread_create.c:463
#8  0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f930eb93700 (LWP 1837)):
#0  0x00007f93e2900a00 in QMutex::unlock() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f93e2b40d27 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f93dcc9be51 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f93dcc9c3e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f93dcc9c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f93e2b4090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f93e2ae59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f93e290422a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f93114ef747 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#9  0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f93e1a856db in start_thread (arg=0x7f930eb93700) at pthread_create.c:463
#11 0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f9328e53700 (LWP 1831)):
#0  0x00007f93e1a8b9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558ec7d980e4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f93e1a8b9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x558ec7d98090, cond=0x558ec7d980b8) at pthread_cond_wait.c:502
#2  0x00007f93e1a8b9f3 in __pthread_cond_wait (cond=0x558ec7d980b8, mutex=0x558ec7d98090) at pthread_cond_wait.c:655
#3  0x00007f93e290a59b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f93e668f548 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f93e668f9aa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f93e1a856db in start_thread (arg=0x7f9328e53700) at pthread_create.c:463
#8  0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f932a056700 (LWP 1827)):
#0  0x00007f93dcce1cd9 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f93dcc9bc8f in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f93dcc9c3e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f93dcc9c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f93e2b4090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f93e2ae59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f93e290422a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f93e66102a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f93e1a856db in start_thread (arg=0x7f932a056700) at pthread_create.c:463
#10 0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f93bb9c4700 (LWP 1739)):
#0  0x00007f93e1a8b9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f93e85e6fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f93e1a8b9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f93e85e6f68, cond=0x7f93e85e6f90) at pthread_cond_wait.c:502
#2  0x00007f93e1a8b9f3 in __pthread_cond_wait (cond=0x7f93e85e6f90, mutex=0x7f93e85e6f68) at pthread_cond_wait.c:655
#3  0x00007f93e82f05f4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f93e82f0639 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f93e1a856db in start_thread (arg=0x7f93bb9c4700) at pthread_create.c:463
#6  0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f93c5d8f700 (LWP 1728)):
#0  0x00007f93e1a8d064 in __GI___pthread_getspecific (key=<optimized out>) at pthread_getspecific.c:60
#1  0x00007f93dccc42f0 in g_thread_self () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f93dcc9b2cc in g_main_context_acquire () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f93dcc9c2f5 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f93dcc9c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f93e2b4090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f93e2ae59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f93e290422a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f93e5a766f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f93e1a856db in start_thread (arg=0x7f93c5d8f700) at pthread_create.c:463
#11 0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f93c7dfa700 (LWP 1716)):
#0  0x00007f93e21ee0b4 in __GI___libc_read (fd=10, buf=0x7f93c7df9b30, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f93da6a6f55 in  () at /usr/lib/x86_64-linux-gnu/tls/libnvidia-tls.so.340.106
#2  0x00007f93dcce0960 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f93dcc9bf27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f93dcc9c3e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f93dcc9c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f93e2b4090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f93e2ae59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f93e290422a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f93e5a766f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f93e1a856db in start_thread (arg=0x7f93c7dfa700) at pthread_create.c:463
#12 0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f93cd8d7700 (LWP 1682)):
#0  0x00007ffd7bb2ba9a in clock_gettime ()
#1  0x00007f93e220eea6 in __GI___clock_gettime (clock_id=1, tp=0x7f93cd8d6aa0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f93e2b40221 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f93e2b3ea59 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f93e2b3f035 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f93e2b4067e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f93dcc9b998 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f93dcc9c36b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f93dcc9c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f93e2b4090b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f93e2ae59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f93e290422a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f93e2fbdd45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#13 0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f93e1a856db in start_thread (arg=0x7f93cd8d7700) at pthread_create.c:463
#15 0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f93cfe64700 (LWP 1652)):
#0  0x00007f93e21f2bf9 in __GI___poll (fds=0x7f93cfe63c68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f93e721c747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f93e721e36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f93d25eb2a9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f93e290916d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f93e1a856db in start_thread (arg=0x7f93cfe64700) at pthread_create.c:463
#6  0x00007f93e21ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f93e8c28f00 (LWP 1633)):
#0  0x00007f93e1a8b9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558ec9c873c4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f93e1a8b9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x558ec9c87370, cond=0x558ec9c87398) at pthread_cond_wait.c:502
#2  0x00007f93e1a8b9f3 in __pthread_cond_wait (cond=0x558ec9c87398, mutex=0x558ec9c87370) at pthread_cond_wait.c:655
#3  0x00007f93e290a59b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f93e668bd1d in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f93e668caf2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f93e66e95c6 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f93e8624323 in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#8  0x00007f93e3aef82c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f93e3af70f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f93e2ae79a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f93e333f141 in QWindowPrivate::deliverUpdateRequest() () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#12 0x00007f93e333f659 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f93e66e9565 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f93e8624323 in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#15 0x00007f93e3aef82c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f93e3af70f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f93e2ae79a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f93e2b3fd8e in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f93e2b40551 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f93dcc9c287 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f93dcc9c4c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f93dcc9c54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f93e2b408ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f93e2ae59ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f93e2aeea84 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x0000558ec4fc5cfa in  ()
#27 0x00007f93e20ffb97 in __libc_start_main (main=0x558ec4fc5320, argc=1, argv=0x7ffd7ba85f28, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd7ba85f18) at ../csu/libc-start.c:310
#28 0x0000558ec4fc609a in _start ()

Reported using DrKonqi