Application: plasmashell (5.18.4)

Qt Version: 5.14.2
Frameworks Version: 5.70.0
Operating System: Linux 5.6.7-050607-generic x86_64
Windowing system: X11
Distribution: KDE neon Testing Edition

-- Information about the crash:
After last updates Desktop chrash on login after reboot.

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 0x7f59ebf1ec80 (LWP 3422))]

Thread 19 (Thread 0x7f59554b8700 (LWP 4070)):
#0  0x00007f59e262f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55fbf3744614) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f59e262f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55fbf37445c0, cond=0x55fbf37445e8) at pthread_cond_wait.c:502
#2  0x00007f59e262f9f3 in __pthread_cond_wait (cond=0x55fbf37445e8, mutex=0x55fbf37445c0) at pthread_cond_wait.c:655
#3  0x00007f59e59f7e5b in QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=..., this=0x55fbf37445c0) at thread/qwaitcondition_unix.cpp:146
#4  0x00007f59e59f7e5b in QWaitCondition::wait(QMutex*, QDeadlineTimer) (this=<optimized out>, mutex=0x55fbf39b5f60, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007f59e59f7fd9 in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x55fbf39b5f68, mutex=mutex@entry=0x55fbf39b5f60, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#6  0x00007f59e9af6233 in QSGRenderThreadEventQueue::takeEvent(bool) (wait=true, this=0x55fbf39b5f58) at scenegraph/qsgthreadedrenderloop.cpp:255
#7  0x00007f59e9af6233 in QSGRenderThread::processEventsAndWaitForMore() (this=this@entry=0x55fbf39b5ec0) at scenegraph/qsgthreadedrenderloop.cpp:905
#8  0x00007f59e9af6691 in QSGRenderThread::run() (this=0x55fbf39b5ec0) at scenegraph/qsgthreadedrenderloop.cpp:1000
#9  0x00007f59e59f18ac in QThreadPrivate::start(void*) (arg=0x55fbf39b5ec0) at thread/qthread_unix.cpp:342
#10 0x00007f59e26296db in start_thread (arg=0x7f59554b8700) at pthread_create.c:463
#11 0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f5955cb9700 (LWP 4069)):
#0  0x00007f59e262f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55fbf3aa2618) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f59e262f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55fbf3aa25c8, cond=0x55fbf3aa25f0) at pthread_cond_wait.c:502
#2  0x00007f59e262f9f3 in __pthread_cond_wait (cond=0x55fbf3aa25f0, mutex=0x55fbf3aa25c8) at pthread_cond_wait.c:655
#3  0x00007f59c5116a0b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f59c5116607 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f59e26296db in start_thread (arg=0x7f5955cb9700) at pthread_create.c:463
#6  0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f5977016700 (LWP 4066)):
#0  0x00007f59df3dd644 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f59df396b18 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f59df3974fb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f59df3976dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f59e5c4044b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f5968007fa0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f59e5bdf9aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f5977015d60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007f59e59f03d7 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:536
#7  0x00007f5958839467 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f59e59f18ac in QThreadPrivate::start(void*) (arg=0x55fbf37671d0) at thread/qthread_unix.cpp:342
#9  0x00007f59e26296db in start_thread (arg=0x7f5977016700) at pthread_create.c:463
#10 0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f5977fff700 (LWP 3706)):
#0  0x00007f59df3dd629 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f59df396b33 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f59df3974fb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f59df3976dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f59e5c4044b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f5970000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f59e5bdf9aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f5977ffed30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007f59e59f03d7 in QThread::exec() (this=this@entry=0x55fbf227b2a0) at thread/qthread.cpp:536
#7  0x00007f59e9a38b06 in QQuickPixmapReader::run() (this=0x55fbf227b2a0) at util/qquickpixmapcache.cpp:987
#8  0x00007f59e59f18ac in QThreadPrivate::start(void*) (arg=0x55fbf227b2a0) at thread/qthread_unix.cpp:342
#9  0x00007f59e26296db in start_thread (arg=0x7f5977fff700) at pthread_create.c:463
#10 0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f598673f700 (LWP 3686)):
#0  0x00007f59e262f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55fbf1f0b964) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f59e262f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55fbf1f0b910, cond=0x55fbf1f0b938) at pthread_cond_wait.c:502
#2  0x00007f59e262f9f3 in __pthread_cond_wait (cond=0x55fbf1f0b938, mutex=0x55fbf1f0b910) at pthread_cond_wait.c:655
#3  0x00007f59e59f7e5b in QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=..., this=0x55fbf1f0b910) at thread/qwaitcondition_unix.cpp:146
#4  0x00007f59e59f7e5b in QWaitCondition::wait(QMutex*, QDeadlineTimer) (this=<optimized out>, mutex=0x55fbf1c8da40, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007f59e59f7fd9 in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x55fbf1c8da48, mutex=mutex@entry=0x55fbf1c8da40, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#6  0x00007f59e9af6233 in QSGRenderThreadEventQueue::takeEvent(bool) (wait=true, this=0x55fbf1c8da38) at scenegraph/qsgthreadedrenderloop.cpp:255
#7  0x00007f59e9af6233 in QSGRenderThread::processEventsAndWaitForMore() (this=this@entry=0x55fbf1c8d9a0) at scenegraph/qsgthreadedrenderloop.cpp:905
#8  0x00007f59e9af6691 in QSGRenderThread::run() (this=0x55fbf1c8d9a0) at scenegraph/qsgthreadedrenderloop.cpp:1000
#9  0x00007f59e59f18ac in QThreadPrivate::start(void*) (arg=0x55fbf1c8d9a0) at thread/qthread_unix.cpp:342
#10 0x00007f59e26296db in start_thread (arg=0x7f598673f700) at pthread_create.c:463
#11 0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f5985f3e700 (LWP 3684)):
#0  0x00007f59e262f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55fbf21f8a28) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f59e262f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55fbf21f89d8, cond=0x55fbf21f8a00) at pthread_cond_wait.c:502
#2  0x00007f59e262f9f3 in __pthread_cond_wait (cond=0x55fbf21f8a00, mutex=0x55fbf21f89d8) at pthread_cond_wait.c:655
#3  0x00007f59c5116a0b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f59c5116607 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f59e26296db in start_thread (arg=0x7f5985f3e700) at pthread_create.c:463
#6  0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f598cd85700 (LWP 3595)):
#0  0x00007f59e528ebf9 in __GI___poll (fds=0x7f5988002de0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f59df3975c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f59df3976dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f59e5c4044b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f5988000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f59e5bdf9aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f598cd84d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#5  0x00007f59e59f03d7 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:536
#6  0x00007f59de87556f in  () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#7  0x00007f59e59f18ac in QThreadPrivate::start(void*) (arg=0x7f59deb04260) at thread/qthread_unix.cpp:342
#8  0x00007f59e26296db in start_thread (arg=0x7f598cd85700) at pthread_create.c:463
#9  0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f59aaffd700 (LWP 3593)):
#0  0x00007f59e59f0a62 in QThreadData::current(bool) (createIfNecessary=createIfNecessary@entry=true) at thread/qthread_unix.cpp:219
#1  0x00007f59e5c40aa1 in postEventSourcePrepare (timeout=0x0, s=0x7f5998004b90) at kernel/qeventdispatcher_glib.cpp:253
#2  0x00007f59e5c40aa1 in postEventSourceCheck(GSource*) (source=0x7f5998004b90) at kernel/qeventdispatcher_glib.cpp:270
#3  0x00007f59df396fe1 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f59df397570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f59df3976dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f59e5c4044b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f5998000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#7  0x00007f59e5bdf9aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f59aaffcda0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#8  0x00007f59e59f03d7 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:536
#9  0x00007f59e59f18ac in QThreadPrivate::start(void*) (arg=0x55fbf1eb0fc0) at thread/qthread_unix.cpp:342
#10 0x00007f59e26296db in start_thread (arg=0x7f59aaffd700) at pthread_create.c:463
#11 0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f59ab7fe700 (LWP 3541)):
#0  0x00007f59e262f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55fbf1a417b0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f59e262f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55fbf1a41760, cond=0x55fbf1a41788) at pthread_cond_wait.c:502
#2  0x00007f59e262f9f3 in __pthread_cond_wait (cond=0x55fbf1a41788, mutex=0x55fbf1a41760) at pthread_cond_wait.c:655
#3  0x00007f59c5116a0b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f59c5116607 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f59e26296db in start_thread (arg=0x7f59ab7fe700) at pthread_create.c:463
#6  0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f59abfff700 (LWP 3540)):
#0  0x00007f59e262f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55fbf1a417b0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f59e262f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55fbf1a41760, cond=0x55fbf1a41788) at pthread_cond_wait.c:502
#2  0x00007f59e262f9f3 in __pthread_cond_wait (cond=0x55fbf1a41788, mutex=0x55fbf1a41760) at pthread_cond_wait.c:655
#3  0x00007f59c5116a0b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f59c5116607 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f59e26296db in start_thread (arg=0x7f59abfff700) at pthread_create.c:463
#6  0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f59b8eea700 (LWP 3539)):
#0  0x00007f59e262f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55fbf1a410b0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f59e262f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55fbf1a41060, cond=0x55fbf1a41088) at pthread_cond_wait.c:502
#2  0x00007f59e262f9f3 in __pthread_cond_wait (cond=0x55fbf1a41088, mutex=0x55fbf1a41060) at pthread_cond_wait.c:655
#3  0x00007f59c5116a0b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f59c5116607 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f59e26296db in start_thread (arg=0x7f59b8eea700) at pthread_create.c:463
#6  0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f59b96eb700 (LWP 3538)):
#0  0x00007f59e262f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55fbf1a410b0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f59e262f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55fbf1a41060, cond=0x55fbf1a41088) at pthread_cond_wait.c:502
#2  0x00007f59e262f9f3 in __pthread_cond_wait (cond=0x55fbf1a41088, mutex=0x55fbf1a41060) at pthread_cond_wait.c:655
#3  0x00007f59c5116a0b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f59c5116607 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f59e26296db in start_thread (arg=0x7f59b96eb700) at pthread_create.c:463
#6  0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f59b9eec700 (LWP 3537)):
#0  0x00007f59e262f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55fbf1a410b0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f59e262f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55fbf1a41060, cond=0x55fbf1a41088) at pthread_cond_wait.c:502
#2  0x00007f59e262f9f3 in __pthread_cond_wait (cond=0x55fbf1a41088, mutex=0x55fbf1a41060) at pthread_cond_wait.c:655
#3  0x00007f59c5116a0b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f59c5116607 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f59e26296db in start_thread (arg=0x7f59b9eec700) at pthread_create.c:463
#6  0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f59ba6ed700 (LWP 3536)):
#0  0x00007f59e262f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55fbf195a6b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f59e262f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55fbf195a668, cond=0x55fbf195a690) at pthread_cond_wait.c:502
#2  0x00007f59e262f9f3 in __pthread_cond_wait (cond=0x55fbf195a690, mutex=0x55fbf195a668) at pthread_cond_wait.c:655
#3  0x00007f59c5116a0b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f59c5116607 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f59e26296db in start_thread (arg=0x7f59ba6ed700) at pthread_create.c:463
#6  0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f59bb730700 (LWP 3535)):
#0  0x00007f59e262f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55fbf1a3cdec) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f59e262f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55fbf1a3cd98, cond=0x55fbf1a3cdc0) at pthread_cond_wait.c:502
#2  0x00007f59e262f9f3 in __pthread_cond_wait (cond=0x55fbf1a3cdc0, mutex=0x55fbf1a3cd98) at pthread_cond_wait.c:655
#3  0x00007f59c5116a0b in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f59c5116607 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f59e26296db in start_thread (arg=0x7f59bb730700) at pthread_create.c:463
#6  0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f59ce17e700 (LWP 3529)):
#0  0x00007f59e528a0b4 in __GI___libc_read (fd=10, buf=0x7f59ce17db70, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f59df3dc2b0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f59df3970b7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f59df397570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f59df3976dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f59e5c4044b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f59c0000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f59e5bdf9aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f59ce17dd80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#7  0x00007f59e59f03d7 in QThread::exec() (this=this@entry=0x55fbf16acf60) at thread/qthread.cpp:536
#8  0x00007f59e95a2fc5 in QQmlThreadPrivate::run() (this=0x55fbf16acf60) at qml/ftw/qqmlthread.cpp:155
#9  0x00007f59e59f18ac in QThreadPrivate::start(void*) (arg=0x55fbf16acf60) at thread/qthread_unix.cpp:342
#10 0x00007f59e26296db in start_thread (arg=0x7f59ce17e700) at pthread_create.c:463
#11 0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f59cffff700 (LWP 3458)):
#0  0x00007f59e52aa762 in __libc_disable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:96
#1  0x00007f59e528ec0d in __GI___poll (fds=0x7f59c8002de0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#2  0x00007f59df3975c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f59df3976dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f59e5c4044b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f59c8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f59e5bdf9aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f59cfffed70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007f59e59f03d7 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:536
#7  0x00007f59e78ed555 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f59e59f18ac in QThreadPrivate::start(void*) (arg=0x7f59e7b65da0) at thread/qthread_unix.cpp:342
#9  0x00007f59e26296db in start_thread (arg=0x7f59cffff700) at pthread_create.c:463
#10 0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f59d6872700 (LWP 3444)):
#0  0x00007f59e528ebf9 in __GI___poll (fds=0x7f59d6871ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f59ea708747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f59ea70a36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f59d9033fd0 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f59e59f18ac in QThreadPrivate::start(void*) (arg=0x55fbf151f4d0) at thread/qthread_unix.cpp:342
#5  0x00007f59e26296db in start_thread (arg=0x7f59d6872700) at pthread_create.c:463
#6  0x00007f59e529b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f59ebf1ec80 (LWP 3422)):
[KCrash Handler]
#4  0x00007f59e93399dc in QArrayData::data() (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:61
#5  0x00007f59e93399dc in QTypedArrayData<QV4::Value*>::data() (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:208
#6  0x00007f59e93399dc in QTypedArrayData<QV4::Value*>::begin(QV4::Value**) (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:211
#7  0x00007f59e93399dc in QVector<QV4::Value*>::realloc(int, QFlags<QArrayData::AllocationOption>) (this=0x55fbf1726c98, aalloc=<optimized out>, options=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvector.h:720
#8  0x00007f59e93b26f8 in QVector<QV4::Value*>::append(QV4::Value* const&) (t=@0x55fbf3219ab0: 0x7f59770eced0, this=0x55fbf1726c98) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvector.h:794
#9  0x00007f59e93b26f8 in QVector<QV4::Value*>::push_back(QV4::Value* const&) (t=@0x55fbf3219ab0: 0x7f59770eced0, this=0x55fbf1726c98) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvector.h:272
#10 0x00007f59e93b26f8 in QV4::WeakValue::free() (this=this@entry=0x55fbf3219ab0) at jsruntime/qv4persistent.cpp:428
#11 0x00007f59e94efc1e in QV4::WeakValue::clear() (this=0x55fbf3219ab0) at ../../include/QtQml/5.14.2/QtQml/private/../../../../../src/qml/jsruntime/qv4persistent_p.h:204
#12 0x00007f59e94efc1e in QQmlData::destroyed(QObject*) (this=0x55fbf3219a40, object=0x55fbf321fff0) at qml/qqmlengine.cpp:1964
#13 0x00007f59e5c19c23 in QObject::~QObject() (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1026
#14 0x00007f59e9b3e22d in QQuickItem::~QQuickItem() (this=0x55fbf321fff0, __in_chrg=<optimized out>) at items/qquickitem.cpp:2383
#15 0x00007f59e9c6eb39 in QQuickShaderEffectSource::~QQuickShaderEffectSource() (this=0x55fbf321fff0, __in_chrg=<optimized out>) at items/qquickshadereffectsource.cpp:218
#16 0x00007f598695067b in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtGraphicalEffects/private/libqtgraphicaleffectsprivate.so
#17 0x00007f598694b575 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtGraphicalEffects/private/libqtgraphicaleffectsprivate.so
#18 0x00007f59e5c1096b in QObjectPrivate::deleteChildren() (this=0x55fbf2e15ce0) at kernel/qobject.cpp:2123
#19 0x00007f59e5c19f4e in QObject::~QObject() (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#20 0x00007f59e9b3e22d in QQuickItem::~QQuickItem() (this=0x55fbf2e15c20, __in_chrg=<optimized out>) at items/qquickitem.cpp:2383
#21 0x00007f59e9b5ebb5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55fbf2e15c20, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#22 0x00007f59e9b5ebb5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55fbf2e15c20, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#23 0x00007f59e5c1096b in QObjectPrivate::deleteChildren() (this=0x55fbf2e15890) at kernel/qobject.cpp:2123
#24 0x00007f59e5c19f4e in QObject::~QObject() (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#25 0x00007f59e9b3e22d in QQuickItem::~QQuickItem() (this=0x55fbf2e157d0, __in_chrg=<optimized out>) at items/qquickitem.cpp:2383
#26 0x00007f59e9b5ebb5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55fbf2e157d0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#27 0x00007f59e9b5ebb5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55fbf2e157d0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#28 0x00007f59e5c1096b in QObjectPrivate::deleteChildren() (this=0x55fbf2e15530) at kernel/qobject.cpp:2123
#29 0x00007f59e5c19f4e in QObject::~QObject() (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#30 0x00007f59e9b3e22d in QQuickItem::~QQuickItem() (this=0x55fbf2e15470, __in_chrg=<optimized out>) at items/qquickitem.cpp:2383
#31 0x00007f59e9b5ebb5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55fbf2e15470, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#32 0x00007f59e9b5ebb5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55fbf2e15470, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#33 0x00007f59e5c1096b in QObjectPrivate::deleteChildren() (this=0x55fbf2df7e80) at kernel/qobject.cpp:2123
#34 0x00007f59e5c19f4e in QObject::~QObject() (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#35 0x00007f59e9b3e22d in QQuickItem::~QQuickItem() (this=0x55fbf2df7dc0, __in_chrg=<optimized out>) at items/qquickitem.cpp:2383
#36 0x00007f59e9b5edd5 in QQmlPrivate::QQmlElement<QQuickLoader>::~QQmlElement() (this=0x55fbf2df7dc0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#37 0x00007f59e9b5edd5 in QQmlPrivate::QQmlElement<QQuickLoader>::~QQmlElement() (this=0x55fbf2df7dc0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#38 0x00007f59e5c1096b in QObjectPrivate::deleteChildren() (this=0x55fbf2df62b0) at kernel/qobject.cpp:2123
#39 0x00007f59e5c19f4e in QObject::~QObject() (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#40 0x00007f59e9b3e22d in QQuickItem::~QQuickItem() (this=0x55fbf2df61f0, __in_chrg=<optimized out>) at items/qquickitem.cpp:2383
#41 0x00007f59e9b5ebb5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55fbf2df61f0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#42 0x00007f59e9b5ebb5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55fbf2df61f0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#43 0x00007f59e5c1096b in QObjectPrivate::deleteChildren() (this=0x55fbf2db8110) at kernel/qobject.cpp:2123
#44 0x00007f59e5c19f4e in QObject::~QObject() (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#45 0x00007f59e9b3e22d in QQuickItem::~QQuickItem() (this=0x55fbf2db8050, __in_chrg=<optimized out>) at items/qquickitem.cpp:2383
#46 0x00007f59e9b5edd5 in QQmlPrivate::QQmlElement<QQuickLoader>::~QQmlElement() (this=0x55fbf2db8050, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#47 0x00007f59e9b5edd5 in QQmlPrivate::QQmlElement<QQuickLoader>::~QQmlElement() (this=0x55fbf2db8050, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#48 0x00007f59e5c1096b in QObjectPrivate::deleteChildren() (this=0x55fbf2df3a50) at kernel/qobject.cpp:2123
#49 0x00007f59e5c19f4e in QObject::~QObject() (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#50 0x00007f59e9b3e22d in QQuickItem::~QQuickItem() (this=0x55fbf2df3990, __in_chrg=<optimized out>) at items/qquickitem.cpp:2383
#51 0x00007f59e9b5ebb5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55fbf2df3990, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#52 0x00007f59e9b5ebb5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55fbf2df3990, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#53 0x00007f59e5c14225 in QObject::event(QEvent*) (this=this@entry=0x55fbf2df3990, e=e@entry=0x55fbf2db75a0) at kernel/qobject.cpp:1326
#54 0x00007f59e9b3b4db in QQuickItem::event(QEvent*) (this=0x55fbf2df3990, ev=0x55fbf2db75a0) at items/qquickitem.cpp:8162
#55 0x00007f59e6f249ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#56 0x00007f59e6f2bbb0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#57 0x00007f59e5be1128 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55fbf2df3990, event=0x55fbf2db75a0) at kernel/qcoreapplication.cpp:1075
#58 0x00007f59e5be12fe in QCoreApplication::sendEvent(QObject*, QEvent*) (receiver=receiver@entry=0x55fbf2df3990, event=event@entry=0x55fbf2db75a0) at kernel/qcoreapplication.cpp:1470
#59 0x00007f59e5be3da1 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x55fbf150ff20) at kernel/qcoreapplication.cpp:1815
#60 0x00007f59e5be4338 in QCoreApplication::sendPostedEvents(QObject*, int) (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1674
#61 0x00007f59e5c40d83 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x55fbf157d2b0) at kernel/qeventdispatcher_glib.cpp:277
#62 0x00007f59df397417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#63 0x00007f59df397650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#64 0x00007f59df3976dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#65 0x00007f59e5c4042c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x55fbf158cc90, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#66 0x00007f59e5bdf9aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffe63fbff00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#67 0x00007f59e5be9120 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1383
#68 0x000055fbf097a894 in  ()
#69 0x00007f59e519bb97 in __libc_start_main (main=0x55fbf0979a70, argc=1, argv=0x7ffe63fc0208, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe63fc01f8) at ../csu/libc-start.c:310
#70 0x000055fbf097a9fa in _start ()
[Inferior 1 (process 3422) detached]

Reported using DrKonqi