Bug 424022

Summary: Plasma crashed in QSGBatchRenderer::Renderer::renderBatches() after moving one taskbar panel beside another panel in the bottom of the screen
Product: [Plasma] plasmashell Reporter: Emanuele Spirito <emaster987>
Component: generic-crashAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: crash CC: emaster987, gregoryarapis, kde, luis.quintero, michal.harlacz.2k7, nate, plasma-bugs-null, ste.pigozzi, travneff
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.18.5   
Target Milestone: 1.0   
Platform: Fedora RPMs   
OS: Linux   
See Also: https://bugs.kde.org/show_bug.cgi?id=434533
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: New crash information added by DrKonqi

Description Emanuele Spirito 2020-07-09 10:20:44 UTC 
Application: plasmashell (5.18.5)

Qt Version: 5.14.2
Frameworks Version: 5.70.0
Operating System: Linux 5.7.6-201.fc32.x86_64 x86_64
Windowing system: X11
Distribution: Fedora 32 (KDE Plasma)

-- Information about the crash:
- What I was doing when the application crashed:
I had one taskbar panel in the bottom-center of the screen (with the setting to appear only when the cursor passes over that space) while I was adding a new taskbar panel and moving it in the left-bottom corner of the screen.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f848a7113c0 (LWP 1107))]

Thread 27 (Thread 0x7f83dfbff700 (LWP 2862)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f848e6a1dab in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib64/libQt5Core.so.5
#2  0x00007f84901b8bc2 in QSGRenderThread::processEventsAndWaitForMore() () from /lib64/libQt5Quick.so.5
#3  0x00007f84901bb109 in QSGRenderThread::run() () from /lib64/libQt5Quick.so.5
#4  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 26 (Thread 0x7f83bb7ff700 (LWP 2861)):
#0  0x00007f848cf421e8 in g_mutex_unlock () from /lib64/libglib-2.0.so.0
#1  0x00007f848cef3ac3 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#2  0x00007f848cef3c03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f848e87cb8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f848e82f91b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f848e69b427 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f848fe5c1e9 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 25 (Thread 0x7f83de0a9700 (LWP 2849)):
[KCrash Handler]
#4  0x00007f849015e418 in QSGBatchRenderer::Renderer::renderMergedBatch(QSGBatchRenderer::Batch const*) () from /lib64/libQt5Quick.so.5
#5  0x00007f84901633b5 in QSGBatchRenderer::Renderer::renderBatches() () from /lib64/libQt5Quick.so.5
#6  0x00007f8490163ac2 in QSGBatchRenderer::Renderer::render() () from /lib64/libQt5Quick.so.5
#7  0x00007f849014c2a4 in QSGRenderer::renderScene(QSGBindable const&) () from /lib64/libQt5Quick.so.5
#8  0x00007f849014c773 in QSGRenderer::renderScene(unsigned int) () from /lib64/libQt5Quick.so.5
#9  0x00007f84901ac985 in QSGDefaultRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () from /lib64/libQt5Quick.so.5
#10 0x00007f8490215109 in QQuickWindowPrivate::renderSceneGraph(QSize const&, QSize const&) () from /lib64/libQt5Quick.so.5
#11 0x00007f84901ba22b in QSGRenderThread::syncAndRender(QImage*) () from /lib64/libQt5Quick.so.5
#12 0x00007f84901bb0c7 in QSGRenderThread::run() () from /lib64/libQt5Quick.so.5
#13 0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#14 0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#15 0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 24 (Thread 0x7f83de93e700 (LWP 2819)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f848e6a1dab in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib64/libQt5Core.so.5
#2  0x00007f84901b8bc2 in QSGRenderThread::processEventsAndWaitForMore() () from /lib64/libQt5Quick.so.5
#3  0x00007f84901bb109 in QSGRenderThread::run() () from /lib64/libQt5Quick.so.5
#4  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 23 (Thread 0x7f83dd33e700 (LWP 2458)):
#0  0x00007f848e30c57c in read () from /lib64/libc.so.6
#1  0x00007f84547f3335 in pa_read () from /usr/lib64/pulseaudio/libpulsecommon-13.99.so
#2  0x00007f845487c566 in pa_mainloop_prepare () from /lib64/libpulse.so.0
#3  0x00007f845487d004 in pa_mainloop_iterate () from /lib64/libpulse.so.0
#4  0x00007f845487d0c0 in pa_mainloop_run () from /lib64/libpulse.so.0
#5  0x00007f845488b31d in thread () from /lib64/libpulse.so.0
#6  0x00007f84548215cc in internal_thread_func () from /usr/lib64/pulseaudio/libpulsecommon-13.99.so
#7  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 22 (Thread 0x7f84188f1700 (LWP 2073)):
#0  0x00007f848e310b6f in poll () from /lib64/libc.so.6
#1  0x00007f845488b246 in poll_func () from /lib64/libpulse.so.0
#2  0x00007f845487c991 in pa_mainloop_poll () from /lib64/libpulse.so.0
#3  0x00007f845487d013 in pa_mainloop_iterate () from /lib64/libpulse.so.0
#4  0x00007f845487d0c0 in pa_mainloop_run () from /lib64/libpulse.so.0
#5  0x00007f845488b31d in thread () from /lib64/libpulse.so.0
#6  0x00007f84548215cc in internal_thread_func () from /usr/lib64/pulseaudio/libpulsecommon-13.99.so
#7  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 21 (Thread 0x7f8419204700 (LWP 1931)):
#0  0x00007f848e30c57c in read () from /lib64/libc.so.6
#1  0x00007f848cf3d53f in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f848cef360e in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f848cef3a75 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#4  0x00007f848cef3e53 in g_main_loop_run () from /lib64/libglib-2.0.so.0
#5  0x00007f84553e06aa in gdbus_shared_thread_func () from /lib64/libgio-2.0.so.0
#6  0x00007f848cf1d812 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#7  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 20 (Thread 0x7f8419a05700 (LWP 1930)):
#0  0x00007f848e30c57c in read () from /lib64/libc.so.6
#1  0x00007f848cf3d53f in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f848cef360e in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f848cef3a75 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#4  0x00007f848cef3c03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f848cef3c51 in glib_worker_main () from /lib64/libglib-2.0.so.0
#6  0x00007f848cf1d812 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#7  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 19 (Thread 0x7f841a406700 (LWP 1912)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f848e6a1dab in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib64/libQt5Core.so.5
#2  0x00007f84901b8bc2 in QSGRenderThread::processEventsAndWaitForMore() () from /lib64/libQt5Quick.so.5
#3  0x00007f84901bb109 in QSGRenderThread::run() () from /lib64/libQt5Quick.so.5
#4  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 18 (Thread 0x7f841bfff700 (LWP 1860)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f848e6a1dab in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib64/libQt5Core.so.5
#2  0x00007f84901b8bc2 in QSGRenderThread::processEventsAndWaitForMore() () from /lib64/libQt5Quick.so.5
#3  0x00007f84901bb109 in QSGRenderThread::run() () from /lib64/libQt5Quick.so.5
#4  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7f8429020700 (LWP 1726)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f848e6a1dab in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib64/libQt5Core.so.5
#2  0x00007f84901b8bc2 in QSGRenderThread::processEventsAndWaitForMore() () from /lib64/libQt5Quick.so.5
#3  0x00007f84901bb109 in QSGRenderThread::run() () from /lib64/libQt5Quick.so.5
#4  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7f842a1ed700 (LWP 1685)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f848e6a1dab in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib64/libQt5Core.so.5
#2  0x00007f84901b8bc2 in QSGRenderThread::processEventsAndWaitForMore() () from /lib64/libQt5Quick.so.5
#3  0x00007f84901bb109 in QSGRenderThread::run() () from /lib64/libQt5Quick.so.5
#4  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7f842bfff700 (LWP 1655)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f848e6a1dab in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib64/libQt5Core.so.5
#2  0x00007f84901b8bc2 in QSGRenderThread::processEventsAndWaitForMore() () from /lib64/libQt5Quick.so.5
#3  0x00007f84901bb109 in QSGRenderThread::run() () from /lib64/libQt5Quick.so.5
#4  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7f842b7fe700 (LWP 1599)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f848e6a1dab in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib64/libQt5Core.so.5
#2  0x00007f84901b8bc2 in QSGRenderThread::processEventsAndWaitForMore() () from /lib64/libQt5Quick.so.5
#3  0x00007f84901bb109 in QSGRenderThread::run() () from /lib64/libQt5Quick.so.5
#4  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7f8442c34700 (LWP 1395)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f848e6a1dab in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib64/libQt5Core.so.5
#2  0x00007f84901b8bc2 in QSGRenderThread::processEventsAndWaitForMore() () from /lib64/libQt5Quick.so.5
#3  0x00007f84901bb109 in QSGRenderThread::run() () from /lib64/libQt5Quick.so.5
#4  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7f8443a2b700 (LWP 1372)):
#0  0x00007f848e310b6f in poll () from /lib64/libc.so.6
#1  0x00007f848cef3ace in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#2  0x00007f848cef3c03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f848e87cb8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f848e82f91b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f848e69b427 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f8443f5266c in KCupsConnection::run() () from /lib64/libkcupslib.so
#7  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f8456734700 (LWP 1362)):
#0  0x00007f848e310b6f in poll () from /lib64/libc.so.6
#1  0x00007f848cef3ace in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#2  0x00007f848cef3c03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f848e87cb8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f848e82f91b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f848e69b427 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f8490109fda in QQuickPixmapReader::run() () from /lib64/libQt5Quick.so.5
#7  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f845781c700 (LWP 1341)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f848e6a1dab in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib64/libQt5Core.so.5
#2  0x00007f84901b8bc2 in QSGRenderThread::processEventsAndWaitForMore() () from /lib64/libQt5Quick.so.5
#3  0x00007f84901bb109 in QSGRenderThread::run() () from /lib64/libQt5Quick.so.5
#4  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f8469ff7700 (LWP 1335)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8474a4dabb in util_queue_thread_func () from /usr/lib64/dri/i965_dri.so
#2  0x00007f8474a4d58b in impl_thrd_routine () from /usr/lib64/dri/i965_dri.so
#3  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f846a7f8700 (LWP 1334)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8474a4dabb in util_queue_thread_func () from /usr/lib64/dri/i965_dri.so
#2  0x00007f8474a4d58b in impl_thrd_routine () from /usr/lib64/dri/i965_dri.so
#3  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f846aff9700 (LWP 1333)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8474a4dabb in util_queue_thread_func () from /usr/lib64/dri/i965_dri.so
#2  0x00007f8474a4d58b in impl_thrd_routine () from /usr/lib64/dri/i965_dri.so
#3  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f846b7fa700 (LWP 1332)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8474a4dabb in util_queue_thread_func () from /usr/lib64/dri/i965_dri.so
#2  0x00007f8474a4d58b in impl_thrd_routine () from /usr/lib64/dri/i965_dri.so
#3  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f8475e65700 (LWP 1315)):
#0  0x00007f848cf421e8 in g_mutex_unlock () from /lib64/libglib-2.0.so.0
#1  0x00007f848cef2fd5 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#2  0x00007f848cef39fb in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#3  0x00007f848cef3c03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f848e87cb8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f848e82f91b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f848e69b427 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f8477593700 (LWP 1310)):
#0  0x00007f848e310b6f in poll () from /lib64/libc.so.6
#1  0x00007f848cef3ace in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#2  0x00007f848cef3c03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f848e87cb8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f848e82f91b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f848e69b427 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f848fe5c1e9 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f847c82a700 (LWP 1128)):
#0  0x00007f8490a0c815 in _dl_update_slotinfo () from /lib64/ld-linux-x86-64.so.2
#1  0x00007f8490a0c87c in update_get_addr () from /lib64/ld-linux-x86-64.so.2
#2  0x00007f8490a11f3c in __tls_get_addr () from /lib64/ld-linux-x86-64.so.2
#3  0x00007f848e69bd5a in QThreadData::current(bool) () from /lib64/libQt5Core.so.5
#4  0x00007f848e87ca2e in postEventSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#5  0x00007f848cef2fe2 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#6  0x00007f848cef39fb in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#7  0x00007f848cef3c03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#8  0x00007f848e87cb8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#9  0x00007f848e82f91b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#10 0x00007f848e69b427 in QThread::exec() () from /lib64/libQt5Core.so.5
#11 0x00007f848f80a51b in QDBusConnectionManager::run() () from /lib64/libQt5DBus.so.5
#12 0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#13 0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#14 0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f847d451700 (LWP 1116)):
#0  0x00007f848e310b6f in poll () from /lib64/libc.so.6
#1  0x00007f84905d338a in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007f84905d571a in xcb_wait_for_event () from /lib64/libxcb.so.1
#3  0x00007f847d62dc78 in QXcbEventQueue::run() () from /lib64/libQt5XcbQpa.so.5
#4  0x00007f848e69c690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f848db46432 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f848e31b9d3 in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f848a7113c0 (LWP 1107)):
#0  0x00007f848db4ce92 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f848e6a1dab in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib64/libQt5Core.so.5
#2  0x00007f84901bcd0d in QSGThreadedRenderLoop::polishAndSync(QSGThreadedRenderLoop::Window*, bool) () from /lib64/libQt5Quick.so.5
#3  0x00007f8490222687 in QQuickWindow::event(QEvent*) () from /lib64/libQt5Quick.so.5
#4  0x00007f848f222063 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#5  0x00007f848e830fc0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#6  0x00007f848ec063f4 in QPlatformWindow::windowEvent(QEvent*) () from /lib64/libQt5Gui.so.5
#7  0x00007f848f22737b in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#8  0x00007f848e830fc0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#9  0x00007f848e87be83 in QTimerInfoList::activateTimers() () from /lib64/libQt5Core.so.5
#10 0x00007f848e87c7c4 in idleTimerSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#11 0x00007f848cef37af in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#12 0x00007f848cef3b38 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#13 0x00007f848cef3c03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#14 0x00007f848e87cb73 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#15 0x00007f848e82f91b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#16 0x00007f848e8375a6 in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#17 0x000055bce9d36b81 in main ()
[Inferior 1 (process 1107) detached]

Possible duplicates by query: bug 422585, bug 420427, bug 418888, bug 418316, bug 418084.

Reported using DrKonqi
Comment 1 Nate Graham 2021-03-02 04:11:59 UTC 
*** Bug 424543 has been marked as a duplicate of this bug. ***
Comment 2 Nate Graham 2021-03-02 04:12:10 UTC 
*** Bug 424898 has been marked as a duplicate of this bug. ***
Comment 3 Michał Harłacz 2021-04-11 10:34:09 UTC 
Created attachment 137502 [details]
New crash information added by DrKonqi

plasmashell (5.21.4) using Qt 5.15.2

- What I was doing when the application crashed:
Moving widget from one panel to second panel (in this case - clock)
- Unusual behavior I noticed:
The clock font glitched out, instead of time, it was showing boxes.
- Custom settings of the application:
2 taskbars and clock with seconds

-- Backtrace (Reduced):
#4  0x00007fe8c4106d40 in QSGBatchRenderer::Renderer::renderMergedBatch(QSGBatchRenderer::Batch const*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fe8c410ca45 in QSGBatchRenderer::Renderer::renderBatches() () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fe8c410cf9a in QSGBatchRenderer::Renderer::render() () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fe8c40f0b54 in QSGRenderer::renderScene(QSGBindable const&) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fe8c40f1023 in QSGRenderer::renderScene(unsigned int) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
Comment 4 Nate Graham 2021-05-13 16:15:55 UTC 
*** Bug 436940 has been marked as a duplicate of this bug. ***
Comment 5 David Edmundson 2021-07-11 22:36:49 UTC 

*** This bug has been marked as a duplicate of bug 432999 ***