Application: plasmashell (5.21.90)

Qt Version: 5.15.2
Frameworks Version: 5.82.0
Operating System: Linux 5.11.0-18-lowlatency x86_64
Windowing System: Wayland
Drkonqi Version: 5.21.90
Distribution: Ubuntu 21.04

-- Information about the crash:
- What I was doing when the application crashed:
I had this widget already on my Desktop: https://store.kde.org/p/1308861/
I tried to drag and drop it from the Desktop to the taskbar and then the screen became black and Plasma crashed.

The reporter is unsure if this crash is reproducible.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault

[KCrash Handler]
#4  0x00007fd2d72911cc in QSGBatchRenderer::Renderer::renderMergedBatch (batch=0x55cadf8149e0, this=0x7fd26c000ee0) at scenegraph/coreapi/qsgbatchrenderer.cpp:3067
#5  QSGBatchRenderer::Renderer::renderMergedBatch (this=0x7fd26c000ee0, batch=0x55cadf8149e0) at scenegraph/coreapi/qsgbatchrenderer.cpp:3026
#6  0x00007fd2d7296095 in QSGBatchRenderer::Renderer::renderBatches (this=this@entry=0x7fd26c000ee0) at scenegraph/coreapi/qsgbatchrenderer.cpp:4066
#7  0x00007fd2d72967a2 in QSGBatchRenderer::Renderer::render (this=<optimized out>) at scenegraph/coreapi/qsgbatchrenderer.cpp:4363
#8  0x00007fd2d727ec84 in QSGRenderer::renderScene (bindable=..., this=0x7fd26c000ee0) at scenegraph/coreapi/qsgrenderer.cpp:264
#9  QSGRenderer::renderScene (this=0x7fd26c000ee0, bindable=...) at scenegraph/coreapi/qsgrenderer.cpp:220
#10 0x00007fd2d727f153 in QSGRenderer::renderScene (this=<optimized out>, fboId=<optimized out>) at scenegraph/coreapi/qsgrenderer.cpp:212
#11 0x00007fd2d72df8d7 in QSGDefaultRenderContext::renderNextFrame (this=0x55cadbef53a0, renderer=0x7fd26c000ee0, fboId=<optimized out>) at scenegraph/qsgdefaultrendercontext.cpp:228
#12 0x00007fd2d734b139 in QQuickWindowPrivate::renderSceneGraph (this=0x55cadbda3200, size=..., surfaceSize=...) at items/qquickwindow.cpp:617
#13 0x00007fd2d72edaed in QSGRenderThread::syncAndRender (this=0x7fd2c80793d0, grabImage=0x0) at scenegraph/qsgthreadedrenderloop.cpp:837
#14 0x00007fd2d72ee457 in QSGRenderThread::run (this=0x7fd2c80793d0) at scenegraph/qsgthreadedrenderloop.cpp:1043
#15 0x00007fd2d578cb51 in QThreadPrivate::start (arg=0x7fd2c80793d0) at thread/qthread_unix.cpp:329
#16 0x00007fd2d46f1450 in start_thread (arg=0x7fd294af0640) at pthread_create.c:473
#17 0x00007fd2d53cfd53 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (LWP 135704 "QSGRenderThread"):
#1  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55cadca7f804, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ../sysdeps/nptl/futex-internal.c:123
#2  0x00007fd2d46f7540 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cadca7f7b0, cond=0x55cadca7f7d8) at pthread_cond_wait.c:504
#3  __pthread_cond_wait (cond=0x55cadca7f7d8, mutex=0x55cadca7f7b0) at pthread_cond_wait.c:628
#4  0x00007fd2d5792d1b in QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x55cadca7f7b0) at thread/qwaitcondition_unix.cpp:146
#5  QWaitCondition::wait (this=this@entry=0x55cadca7f638, mutex=mutex@entry=0x55cadca7f630, deadline=...) at thread/qwaitcondition_unix.cpp:225
#6  0x00007fd2d72ebf9f in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x55cadca7f628) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qdeadlinetimer.h:68
#7  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x55cadca7f590) at scenegraph/qsgthreadedrenderloop.cpp:936
#8  0x00007fd2d72ee499 in QSGRenderThread::run (this=0x55cadca7f590) at scenegraph/qsgthreadedrenderloop.cpp:1053
#9  0x00007fd2d578cb51 in QThreadPrivate::start (arg=0x55cadca7f590) at thread/qthread_unix.cpp:329
#10 0x00007fd2d46f1450 in start_thread (arg=0x7fd25f8ec640) at pthread_create.c:473
#11 0x00007fd2d53cfd53 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (LWP 135703 "KCupsConnection"):
#1  __GI___libc_read (fd=44, buf=0x7fd28c83fa50, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007fd2d3d45d1c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd2d3d98c6d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd2d3d43023 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd2d59cf5ab in QEventDispatcherGlib::processEvents (this=0x7fd264000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007fd2d5974b8b in QEventLoop::exec (this=this@entry=0x7fd28c83fc00, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#7  0x00007fd2d578b992 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#8  0x00007fd28c91fa5c in KCupsConnection::run() () from /lib/x86_64-linux-gnu/libkcupslib.so
#9  0x00007fd2d578cb51 in QThreadPrivate::start (arg=0x55cadc9ebd50) at thread/qthread_unix.cpp:329
#10 0x00007fd2d46f1450 in start_thread (arg=0x7fd28c840640) at pthread_create.c:473
#11 0x00007fd2d53cfd53 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (LWP 135700 "plasmashell"):
#1  0x00007fd2d3974f4a in ?? () from /lib/x86_64-linux-gnu/libusbmuxd-2.0.so.6
#2  0x00007fd2d3976348 in ?? () from /lib/x86_64-linux-gnu/libusbmuxd-2.0.so.6
#3  0x00007fd2d46f1450 in start_thread (arg=0x7fd28d30a640) at pthread_create.c:473
#4  0x00007fd2d53cfd53 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (LWP 135665 "Qt bearer threa"):
#1  0x00007fd2d5390425 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7fd2965f1a00) at ../sysdeps/unix/sysv/linux/clock_gettime.c:41
#2  0x00007fd2d59cee65 in qt_clock_gettime (ts=0x7fd2965f1a00, clock=1) 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  0x00007fd2d59cd6dd in QTimerInfoList::updateCurrentTime (this=0x7fd268004d50) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007fd2d59cfa85 in timerSourceCheckHelper (src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:147
#7  timerSourceCheck (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:174
#8  0x00007fd2d3d45c01 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fd2d3d98c6d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fd2d3d43023 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fd2d59cf5ab in QEventDispatcherGlib::processEvents (this=0x7fd268000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#12 0x00007fd2d5974b8b in QEventLoop::exec (this=this@entry=0x7fd2965f1c40, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#13 0x00007fd2d578b992 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#14 0x00007fd2d578cb51 in QThreadPrivate::start (arg=0x55cadc434090) at thread/qthread_unix.cpp:329
#15 0x00007fd2d46f1450 in start_thread (arg=0x7fd2965f2640) at pthread_create.c:473
#16 0x00007fd2d53cfd53 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (LWP 135638 "QQuickXmlQueryE"):
#1  0x00007fd2d3d98cc6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd2d3d43023 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd2d59cf5ab in QEventDispatcherGlib::processEvents (this=0x7fd274000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fd2d5974b8b in QEventLoop::exec (this=this@entry=0x7fd296df2c20, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#5  0x00007fd2d578b992 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007fd2971d9ac9 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#7  0x00007fd2d578cb51 in QThreadPrivate::start (arg=0x55cadc301fa0) at thread/qthread_unix.cpp:329
#8  0x00007fd2d46f1450 in start_thread (arg=0x7fd296df3640) at pthread_create.c:473
#9  0x00007fd2d53cfd53 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (LWP 135579 "QQuickPixmapRea"):
#1  __GI___libc_read (fd=19, buf=0x7fd2abffea50, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007fd2d3d45d1c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd2d3d98c6d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd2d3d43023 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd2d59cf5ab in QEventDispatcherGlib::processEvents (this=0x7fd2a0010190, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007fd2d5974b8b in QEventLoop::exec (this=this@entry=0x7fd2abffec00, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#7  0x00007fd2d578b992 in QThread::exec (this=this@entry=0x55cadbea3840) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#8  0x00007fd2d723ceca in QQuickPixmapReader::run (this=0x55cadbea3840) at util/qquickpixmapcache.cpp:1024
#9  0x00007fd2d578cb51 in QThreadPrivate::start (arg=0x55cadbea3840) at thread/qthread_unix.cpp:329
#10 0x00007fd2d46f1450 in start_thread (arg=0x7fd2abfff640) at pthread_create.c:473
#11 0x00007fd2d53cfd53 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (LWP 135565 "QQmlThread"):
#1  0x00007fd2d59cf47e in postEventSourcePrepare (s=0x7fd2a4004bb0, timeout=0x7fd2c0abea54) at kernel/qeventdispatcher_glib.cpp:253
#2  0x00007fd2d3d4547f in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd2d3d98bf3 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd2d3d43023 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd2d59cf5ab in QEventDispatcherGlib::processEvents (this=0x7fd2a4000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007fd2d5974b8b in QEventLoop::exec (this=this@entry=0x7fd2c0abec20, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#7  0x00007fd2d578b992 in QThread::exec (this=this@entry=0x55cadb604720) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#8  0x00007fd2d6eef7a9 in QQmlThreadPrivate::run (this=0x55cadb604720) at qml/ftw/qqmlthread.cpp:155
#9  0x00007fd2d578cb51 in QThreadPrivate::start (arg=0x55cadb604720) at thread/qthread_unix.cpp:329
#10 0x00007fd2d46f1450 in start_thread (arg=0x7fd2c0abf640) at pthread_create.c:473
#11 0x00007fd2d53cfd53 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (LWP 135295 "plasmas:disk$3"):
#1  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55cadb4fea28, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ../sysdeps/nptl/futex-internal.c:123
#2  0x00007fd2d46f7540 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cadb4fe9d8, cond=0x55cadb4fea00) at pthread_cond_wait.c:504
#3  __pthread_cond_wait (cond=0x55cadb4fea00, mutex=0x55cadb4fe9d8) at pthread_cond_wait.c:628
#4  0x00007fd2cc2e734b in cnd_wait (mtx=0x55cadb4fe9d8, cond=0x55cadb4fea00) at ../include/c11/threads_posix.h:155
#5  util_queue_thread_func (input=input@entry=0x55cadb3d0ed0) at ../src/util/u_queue.c:294
#6  0x00007fd2cc2e0edb in impl_thrd_routine (p=<optimized out>) at ../include/c11/threads_posix.h:87
#7  0x00007fd2d46f1450 in start_thread (arg=0x7fd2b96cf640) at pthread_create.c:473
#8  0x00007fd2d53cfd53 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (LWP 135294 "plasmas:disk$2"):
#1  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55cadb4fea28, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ../sysdeps/nptl/futex-internal.c:123
#2  0x00007fd2d46f7540 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cadb4fe9d8, cond=0x55cadb4fea00) at pthread_cond_wait.c:504
#3  __pthread_cond_wait (cond=0x55cadb4fea00, mutex=0x55cadb4fe9d8) at pthread_cond_wait.c:628
#4  0x00007fd2cc2e734b in cnd_wait (mtx=0x55cadb4fe9d8, cond=0x55cadb4fea00) at ../include/c11/threads_posix.h:155
#5  util_queue_thread_func (input=input@entry=0x55cadb3d0cf0) at ../src/util/u_queue.c:294
#6  0x00007fd2cc2e0edb in impl_thrd_routine (p=<optimized out>) at ../include/c11/threads_posix.h:87
#7  0x00007fd2d46f1450 in start_thread (arg=0x7fd2c1ed0640) at pthread_create.c:473
#8  0x00007fd2d53cfd53 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (LWP 135293 "plasmas:disk$1"):
#1  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55cadb4fea28, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ../sysdeps/nptl/futex-internal.c:123
#2  0x00007fd2d46f7540 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cadb4fe9d8, cond=0x55cadb4fea00) at pthread_cond_wait.c:504
#3  __pthread_cond_wait (cond=0x55cadb4fea00, mutex=0x55cadb4fe9d8) at pthread_cond_wait.c:628
#4  0x00007fd2cc2e734b in cnd_wait (mtx=0x55cadb4fe9d8, cond=0x55cadb4fea00) at ../include/c11/threads_posix.h:155
#5  util_queue_thread_func (input=input@entry=0x55cadb3d0d30) at ../src/util/u_queue.c:294
#6  0x00007fd2cc2e0edb in impl_thrd_routine (p=<optimized out>) at ../include/c11/threads_posix.h:87
#7  0x00007fd2d46f1450 in start_thread (arg=0x7fd2c26d1640) at pthread_create.c:473
#8  0x00007fd2d53cfd53 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (LWP 135292 "plasmas:disk$0"):
#1  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55cadb4fea28, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ../sysdeps/nptl/futex-internal.c:123
#2  0x00007fd2d46f7540 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55cadb4fe9d8, cond=0x55cadb4fea00) at pthread_cond_wait.c:504
#3  __pthread_cond_wait (cond=0x55cadb4fea00, mutex=0x55cadb4fe9d8) at pthread_cond_wait.c:628
#4  0x00007fd2cc2e734b in cnd_wait (mtx=0x55cadb4fe9d8, cond=0x55cadb4fea00) at ../include/c11/threads_posix.h:155
#5  util_queue_thread_func (input=input@entry=0x55cadb3d0d70) at ../src/util/u_queue.c:294
#6  0x00007fd2cc2e0edb in impl_thrd_routine (p=<optimized out>) at ../include/c11/threads_posix.h:87
#7  0x00007fd2d46f1450 in start_thread (arg=0x7fd2c2ed2640) at pthread_create.c:473
#8  0x00007fd2d53cfd53 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (LWP 135280 "QDBusConnection"):
#1  0x00007fd2d3d98cc6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd2d3d43023 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd2d59cf5ab in QEventDispatcherGlib::processEvents (this=0x7fd2c8000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fd2d5974b8b in QEventLoop::exec (this=this@entry=0x7fd2d067cbf0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#5  0x00007fd2d578b992 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007fd2d63084bb in QDBusConnectionManager::run (this=0x7fd2d6376d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:179
#7  0x00007fd2d578cb51 in QThreadPrivate::start (arg=0x7fd2d6376d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:329
#8  0x00007fd2d46f1450 in start_thread (arg=0x7fd2d067d640) at pthread_create.c:473
#9  0x00007fd2d53cfd53 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (LWP 135241 "plasmashell"):
#1  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7fd2c808aac4, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ../sysdeps/nptl/futex-internal.c:123
#2  0x00007fd2d46f7540 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7fd2c808aa70, cond=0x7fd2c808aa98) at pthread_cond_wait.c:504
#3  __pthread_cond_wait (cond=0x7fd2c808aa98, mutex=0x7fd2c808aa70) at pthread_cond_wait.c:628
#4  0x00007fd2d5792d1b in QWaitConditionPrivate::wait (deadline=..., deadline=..., this=0x7fd2c808aa70) at thread/qwaitcondition_unix.cpp:146
#5  QWaitCondition::wait (this=<optimized out>, mutex=0x7fd2c8079428, deadline=...) at thread/qwaitcondition_unix.cpp:225
#6  0x00007fd2d72efc6a in QSGThreadedRenderLoop::polishAndSync (this=0x55cadb873830, w=0x55cade7b42d0, inExpose=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qdeadlinetimer.h:68
#7  0x00007fd2d73590a7 in QQuickWindow::event (this=0x55cadbf190f0, e=0x7ffffc781b50) at items/qquickwindow.cpp:1858
#8  0x00007fd2d663a173 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x55cadbf190f0, e=0x7ffffc781b50) at kernel/qapplication.cpp:3632
#9  0x00007fd2d597622a in QCoreApplication::notifyInternal2 (receiver=0x55cadbf190f0, event=0x7ffffc781b50) at kernel/qcoreapplication.cpp:1063
#10 0x00007fd2d5d4861d in QPlatformWindow::deliverUpdateRequest (this=<optimized out>) at kernel/qplatformwindow.cpp:789
#11 0x00007fd2d35b1172 in operator() (__closure=0x55cae9308470) at qwaylandwindow.cpp:636
#12 QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, QtWaylandClient::QWaylandWindow::handleFrameCallback()::<lambda()> >::call (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:146
#13 QtPrivate::Functor<QtWaylandClient::QWaylandWindow::handleFrameCallback()::<lambda()>, 0>::call<QtPrivate::List<>, void> (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:256
#14 QtPrivate::QFunctorSlotObject<QtWaylandClient::QWaylandWindow::handleFrameCallback()::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=0x55cae9308460, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:443
#15 0x00007fd2d59a32a1 in QObject::event (this=0x55cadbe23b40, e=0x55cae263c530) at kernel/qobject.cpp:1314
#16 0x00007fd2d663a173 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x55cadbe23b40, e=0x55cae263c530) at kernel/qapplication.cpp:3632
#17 0x00007fd2d597622a in QCoreApplication::notifyInternal2 (receiver=0x55cadbe23b40, event=0x55cae263c530) at kernel/qcoreapplication.cpp:1063
#18 0x00007fd2d5978d01 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x55cadb2c4320) at kernel/qcoreapplication.cpp:1817
#19 0x00007fd2d59cff37 in postEventSourceDispatch (s=0x55cadb333080) at kernel/qeventdispatcher_glib.cpp:277
#20 0x00007fd2d3d458eb in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fd2d3d98d28 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fd2d3d43023 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fd2d59cf594 in QEventDispatcherGlib::processEvents (this=0x55cadb347910, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#24 0x00007fd2d5974b8b in QEventLoop::exec (this=this@entry=0x7ffffc781f70, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#25 0x00007fd2d597d024 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#26 0x00007fd2d5d4ccb0 in QGuiApplication::exec () at kernel/qguiapplication.cpp:1867
#27 0x00007fd2d663a0e9 in QApplication::exec () at kernel/qapplication.cpp:2824
#28 0x000055cadae19dfe in main (argc=<optimized out>, argv=0x7ffffc7820e0) at ./shell/main.cpp:251
[Inferior 1 (process 135241) detached]

Reported using DrKonqi