Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7eff867e0e00 (LWP 2935))]

Thread 13 (Thread 0x7efebf7fe700 (LWP 2967)):
#0  0x00007fff0a288b62 in clock_gettime ()
#1  0x00007eff81430ea6 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7efebf7fd9d0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007eff81d576b1 in qt_clock_gettime (ts=0x7efebf7fd9d0, clock=<optimized out>) at kernel/qelapsedtimer_unix.cpp:111
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#4  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#5  0x00007eff81d55ee9 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7efeac004090) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007eff81d564c5 in QTimerInfoList::timerWait (this=0x7efeac004090, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007eff81d57b0e in timerSourcePrepareHelper (timeout=0x7efebf7fda94, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:132
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7efebf7fda94) at kernel/qeventdispatcher_glib.cpp:165
#9  0x00007eff7b8c9b28 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007eff7b8ca4fb in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007eff7b8ca6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007eff81d57dcb in QEventDispatcherGlib::processEvents (this=0x7efeac000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#13 0x00007eff81cf903a in QEventLoop::exec (this=this@entry=0x7efebf7fdc60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#14 0x00007eff81b204ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#15 0x00007eff81b21c72 in QThreadPrivate::start (arg=0x55f563398990) at thread/qthread_unix.cpp:361
#16 0x00007eff7e1ac6db in start_thread (arg=0x7efebf7fe700) at pthread_create.c:463
#17 0x00007eff8142188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7efebffff700 (LWP 2966)):
#0  0x00007eff814100b4 in __GI___libc_read (fd=69, buf=0x7efebfffea50, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007eff7b90f2d0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff7b8ca0b7 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff7b8ca570 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007eff7b8ca6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007eff81d57dcb in QEventDispatcherGlib::processEvents (this=0x7efeb4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007eff81cf903a in QEventLoop::exec (this=this@entry=0x7efebfffec60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#7  0x00007eff81b204ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#8  0x00007eff81b21c72 in QThreadPrivate::start (arg=0x55f563373d50) at thread/qthread_unix.cpp:361
#9  0x00007eff7e1ac6db in start_thread (arg=0x7efebffff700) at pthread_create.c:463
#10 0x00007eff8142188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7efef0fdf700 (LWP 2956)):
#0  0x00007eff7e1b29f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7efed4074244) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55f55f616268, cond=0x7efed4074218) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7efed4074218, mutex=0x55f55f616268) at pthread_cond_wait.c:655
#3  0x00007eff7afff952 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007eff7b00145a in xcb_wait_for_special_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#5  0x00007eff5b7b032b in glPrimitiveBoundingBox () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#6  0x00007eff5b7b0620 in glPrimitiveBoundingBox () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#7  0x00007eff5b7b0dfe in glPrimitiveBoundingBox () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#8  0x00007eff5b7b1d59 in glPrimitiveBoundingBox () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#9  0x00007eff59907846 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#10 0x00007eff59907c35 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#11 0x00007eff5990305d in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#12 0x00007eff8517d848 in QSGBatchRenderer::Renderer::renderBatches (this=this@entry=0x7efed4007180) at scenegraph/coreapi/qsgbatchrenderer.cpp:2517
#13 0x00007eff85183056 in QSGBatchRenderer::Renderer::render (this=<optimized out>) at scenegraph/coreapi/qsgbatchrenderer.cpp:2735
#14 0x00007eff85173810 in QSGRenderer::renderScene (this=0x7efed4007180, bindable=...) at scenegraph/coreapi/qsgrenderer.cpp:244
#15 0x00007eff85173cbb in QSGRenderer::renderScene (this=<optimized out>, fboId=<optimized out>) at scenegraph/coreapi/qsgrenderer.cpp:197
#16 0x00007eff851b0830 in QSGDefaultRenderContext::renderNextFrame (this=0x55f55fba4a40, renderer=0x7efed4007180, fboId=<optimized out>) at scenegraph/qsgdefaultrendercontext.cpp:182
#17 0x00007eff85212a18 in QQuickWindowPrivate::renderSceneGraph (this=this@entry=0x55f55f8e56e0, size=...) at items/qquickwindow.cpp:486
#18 0x00007eff851bbe92 in QSGRenderThread::syncAndRender (this=this@entry=0x55f561c665e0) at scenegraph/qsgthreadedrenderloop.cpp:646
#19 0x00007eff851bfae8 in QSGRenderThread::run (this=0x55f561c665e0) at scenegraph/qsgthreadedrenderloop.cpp:730
#20 0x00007eff81b21c72 in QThreadPrivate::start (arg=0x55f561c665e0) at thread/qthread_unix.cpp:361
#21 0x00007eff7e1ac6db in start_thread (arg=0x7efef0fdf700) at pthread_create.c:463
#22 0x00007eff8142188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7efef1fe1700 (LWP 2954)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007eff81b21f75 in QtLinuxFutex::_q_futex (val3=0, addr2=0x0, val2=0, val=3, op=0, addr=<optimized out>) at thread/qfutex_p.h:92
#2  QtLinuxFutex::futexWait<QBasicAtomicPointer<QMutexData> > (expectedValue=<optimized out>, futex=...) at thread/qfutex_p.h:107
#3  lockInternal_helper<false> (timeout=-1, elapsedTimer=0x0, d_ptr=...) at thread/qmutex_linux.cpp:142
#4  QBasicMutex::lockInternal (this=0x7eff827f24e0) at thread/qmutex_linux.cpp:159
#5  0x00007eff825851f0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#6  0x00007eff825859d5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007eff8255f304 in QSslSocket::startClientEncryption() () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007eff8255fdc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#9  0x00007eff82567389 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007eff81d2a875 in QMetaObject::activate (sender=0x7efee0005330, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3795
#11 0x00007eff82530309 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007eff825331a8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#13 0x00007eff825432dd in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#14 0x00007eff846b965c in QApplicationPrivate::notify_helper (this=this@entry=0x55f55f5e3680, receiver=receiver@entry=0x7efedc03e7f0, e=e@entry=0x7efef1fe0a40) at kernel/qapplication.cpp:3736
#15 0x00007eff846c0b90 in QApplication::notify (this=0x7fff0a257e50, receiver=0x7efedc03e7f0, e=0x7efef1fe0a40) at kernel/qapplication.cpp:3483
#16 0x00007eff81cfad18 in QCoreApplication::notifyInternal2 (receiver=0x7efedc03e7f0, event=0x7efef1fe0a40) at kernel/qcoreapplication.cpp:1060
#17 0x00007eff81cfaeee in QCoreApplication::sendEvent (receiver=<optimized out>, event=event@entry=0x7efef1fe0a40) at kernel/qcoreapplication.cpp:1450
#18 0x00007eff81d58a18 in socketNotifierSourceDispatch (source=0x7efedc004820) at kernel/qeventdispatcher_glib.cpp:106
#19 0x00007eff7b8ca417 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007eff7b8ca650 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007eff7b8ca6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007eff81d57dcb in QEventDispatcherGlib::processEvents (this=0x7efedc000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#23 0x00007eff81cf903a in QEventLoop::exec (this=this@entry=0x7efef1fe0c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#24 0x00007eff81b204ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#25 0x00007eff81b21c72 in QThreadPrivate::start (arg=0x55f55fcd08c0) at thread/qthread_unix.cpp:361
#26 0x00007eff7e1ac6db in start_thread (arg=0x7efef1fe1700) at pthread_create.c:463
#27 0x00007eff8142188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7efef3fff700 (LWP 2949)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007eff81b24354 in QtLinuxFutex::_q_futex (val3=0, addr2=0x0, val2=0, val=<optimized out>, op=0, addr=<optimized out>) at thread/qfutex_p.h:92
#2  QtLinuxFutex::futexWait<QBasicAtomicInteger<unsigned int> > (expectedValue=<optimized out>, futex=...) at thread/qfutex_p.h:107
#3  futexSemaphoreTryAcquire_loop<false> (timeout=-1, nn=8589934593, curValue=<optimized out>, u=...) at thread/qsemaphore.cpp:219
#4  futexSemaphoreTryAcquire<false> (timeout=-1, n=n@entry=1, u=...) at thread/qsemaphore.cpp:262
#5  QSemaphore::acquire (this=this@entry=0x7efef3ffdc50, n=n@entry=1) at thread/qsemaphore.cpp:326
#6  0x00007eff81d2ab10 in QMetaObject::activate (sender=0x55f561382f90, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3760
#7  0x00007eff82596ca2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007eff82597bfc in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#9  0x00007eff81d2a875 in QMetaObject::activate (sender=0x7efeec009bb0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3795
#10 0x00007eff82595d62 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007eff824e702f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007eff824e884c in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#13 0x00007eff81d2a875 in QMetaObject::activate (sender=0x7efee0005470, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3795
#14 0x00007eff8255e382 in QSslSocket::preSharedKeyAuthenticationRequired(QSslPreSharedKeyAuthenticator*) () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#15 0x00007eff82584efc in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#16 0x00007eff48470156 in ?? () from /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#17 0x00007eff4846e2eb in ?? () from /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#18 0x00007eff4847824e in ?? () from /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#19 0x00007eff48477147 in ?? () from /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#20 0x00007eff484634c4 in SSL_do_handshake () from /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#21 0x00007eff82585405 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#22 0x00007eff825859d5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#23 0x00007eff8255f304 in QSslSocket::startClientEncryption() () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#24 0x00007eff8255fdc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#25 0x00007eff82567389 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#26 0x00007eff81d2a875 in QMetaObject::activate (sender=0x7efee00053b0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3795
#27 0x00007eff82530309 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#28 0x00007eff825331a8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#29 0x00007eff825432dd in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#30 0x00007eff846b965c in QApplicationPrivate::notify_helper (this=this@entry=0x55f55f5e3680, receiver=receiver@entry=0x7efeec0257f0, e=e@entry=0x7efef3ffea40) at kernel/qapplication.cpp:3736
#31 0x00007eff846c0b90 in QApplication::notify (this=0x7fff0a257e50, receiver=0x7efeec0257f0, e=0x7efef3ffea40) at kernel/qapplication.cpp:3483
#32 0x00007eff81cfad18 in QCoreApplication::notifyInternal2 (receiver=0x7efeec0257f0, event=0x7efef3ffea40) at kernel/qcoreapplication.cpp:1060
#33 0x00007eff81cfaeee in QCoreApplication::sendEvent (receiver=<optimized out>, event=event@entry=0x7efef3ffea40) at kernel/qcoreapplication.cpp:1450
#34 0x00007eff81d58a18 in socketNotifierSourceDispatch (source=0x7efeec005050) at kernel/qeventdispatcher_glib.cpp:106
#35 0x00007eff7b8ca417 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007eff7b8ca650 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007eff7b8ca6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007eff81d57dcb in QEventDispatcherGlib::processEvents (this=0x7efeec000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#39 0x00007eff81cf903a in QEventLoop::exec (this=this@entry=0x7efef3ffec60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#40 0x00007eff81b204ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#41 0x00007eff81b21c72 in QThreadPrivate::start (arg=0x55f5617aaa10) at thread/qthread_unix.cpp:361
#42 0x00007eff7e1ac6db in start_thread (arg=0x7efef3fff700) at pthread_create.c:463
#43 0x00007eff8142188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7eff49a21700 (LWP 2948)):
#0  0x00007eff81414bf9 in __GI___poll (fds=0x7efef8004490, nfds=1, timeout=8697) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007eff7b8ca5c9 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff7b8ca6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff81d57dcb in QEventDispatcherGlib::processEvents (this=0x7efef8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007eff81cf903a in QEventLoop::exec (this=this@entry=0x7eff49a20c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#5  0x00007eff81b204ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#6  0x00007eff81b21c72 in QThreadPrivate::start (arg=0x55f56024fb60) at thread/qthread_unix.cpp:361
#7  0x00007eff7e1ac6db in start_thread (arg=0x7eff49a21700) at pthread_create.c:463
#8  0x00007eff8142188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7eff4b781700 (LWP 2944)):
#0  0x00007eff7b910649 in g_mutex_lock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007eff7b8c95e4 in g_main_context_release () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff7b8ca586 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff7b8ca962 in g_main_loop_run () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007eff7a1ee0e6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007eff7b8f2195 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007eff7e1ac6db in start_thread (arg=0x7eff4b781700) at pthread_create.c:463
#7  0x00007eff8142188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7eff4bf82700 (LWP 2943)):
#0  0x00007eff81414bf9 in __GI___poll (fds=0x55f55fee8460, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007eff7b8ca5c9 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff7b8ca6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff7b8ca721 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007eff7b8f2195 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007eff7e1ac6db in start_thread (arg=0x7eff4bf82700) at pthread_create.c:463
#6  0x00007eff8142188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7eff586d9700 (LWP 2942)):
#0  0x00007eff7e1b29f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f55f8533f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55f55f8533a8, cond=0x55f55f8533d0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55f55f8533d0, mutex=0x55f55f8533a8) at pthread_cond_wait.c:655
#3  0x00007eff599bd0aa in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007eff599bcdd7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007eff7e1ac6db in start_thread (arg=0x7eff586d9700) at pthread_create.c:463
#6  0x00007eff8142188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7eff63fff700 (LWP 2940)):
#0  0x00007fff0a288b62 in clock_gettime ()
#1  0x00007eff81430ea6 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7eff63ffe9b0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007eff81d576b1 in qt_clock_gettime (ts=0x7eff63ffe9b0, clock=<optimized out>) at kernel/qelapsedtimer_unix.cpp:111
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#4  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#5  0x00007eff81d55ee9 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7eff5c0048f0) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007eff81d564c5 in QTimerInfoList::timerWait (this=0x7eff5c0048f0, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007eff81d57b0e in timerSourcePrepareHelper (timeout=0x7eff63ffea74, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:132
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7eff63ffea74) at kernel/qeventdispatcher_glib.cpp:165
#9  0x00007eff7b8c9b28 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007eff7b8ca4fb in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007eff7b8ca6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007eff81d57dcb in QEventDispatcherGlib::processEvents (this=0x7eff5c000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#13 0x00007eff81cf903a in QEventLoop::exec (this=this@entry=0x7eff63ffec40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#14 0x00007eff81b204ca in QThread::exec (this=this@entry=0x55f55f799a20) at thread/qthread.cpp:531
#15 0x00007eff82b0b115 in QQmlThreadPrivate::run (this=0x55f55f799a20) at qml/ftw/qqmlthread.cpp:148
#16 0x00007eff81b21c72 in QThreadPrivate::start (arg=0x55f55f799a20) at thread/qthread_unix.cpp:361
#17 0x00007eff7e1ac6db in start_thread (arg=0x7eff63fff700) at pthread_create.c:463
#18 0x00007eff8142188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7eff693cf700 (LWP 2939)):
#0  0x00007eff81414bf9 in __GI___poll (fds=0x7eff64018910, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007eff7b8ca5c9 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff7b8ca6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff81d57dcb in QEventDispatcherGlib::processEvents (this=0x7eff64000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007eff81cf903a in QEventLoop::exec (this=this@entry=0x7eff693cec30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#5  0x00007eff81b204ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#6  0x00007eff82ea9015 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007eff81b21c72 in QThreadPrivate::start (arg=0x7eff83120d80) at thread/qthread_unix.cpp:361
#8  0x00007eff7e1ac6db in start_thread (arg=0x7eff693cf700) at pthread_create.c:463
#9  0x00007eff8142188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7eff7128a700 (LWP 2937)):
#0  0x00007eff81414bf9 in __GI___poll (fds=0x7eff71289b68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007eff7afff747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007eff7b00136a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007eff73e6a578 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007eff81b21c72 in QThreadPrivate::start (arg=0x55f55f607070) at thread/qthread_unix.cpp:361
#5  0x00007eff7e1ac6db in start_thread (arg=0x7eff7128a700) at pthread_create.c:463
#6  0x00007eff8142188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7eff867e0e00 (LWP 2935)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007eff82936215 in QV4::Object::get (receiver=0x7fff0a24fd38, hasProperty=0x0, name=0x7fff0a24fd40, this=0x7fff0a24fd38) at jsruntime/qv4object_p.h:308
#8  QV4::Lookup::getterProtoTwoClasses (l=<optimized out>, engine=<optimized out>, object=...) at jsruntime/qv4lookup.cpp:301
#9  0x00007eff680308ce in ?? ()
#10 0x0000000000000000 in ?? ()