Bug 440660

Application: systemsettings5 (5.22.4)

Qt Version: 5.15.2
Frameworks Version: 5.83.0
Operating System: Linux 5.13.6-200.fc34.x86_64 x86_64
Windowing System: Wayland
Drkonqi Version: 5.22.4
Distribution: Fedora 34 (KDE Plasma)

-- Information about the crash:
- What I was doing when the application crashed:

I changed the rendering backend from OpenGL 2.0 to OpenGL 3.0 and System Settings crashed immediately when I clicked "apply". When I opened the settings again the backend was set to OpenGL 3.0 and I could switch back and forth without crashing.
System Settings also crashed when I added a second workspace and for some other setting I don't remember. So it crashes quite often for different setting changes.

The crash can be reproduced sometimes.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f5cecef7f34 in QWaylandClientExtensionPrivate::handleRegistryGlobal(void*, wl_registry*, unsigned int, QString const&, unsigned int) () from /lib64/libQt5WaylandClient.so.5
#5  0x00007f5cecee4419 in QtWaylandClient::QWaylandDisplay::registry_global(unsigned int, QString const&, unsigned int) () from /lib64/libQt5WaylandClient.so.5
#6  0x00007f5cecf007c3 in QtWayland::wl_registry::handle_global(void*, wl_registry*, unsigned int, char const*, unsigned int) () from /lib64/libQt5WaylandClient.so.5
#7  0x00007f5cea861c04 in ffi_call_unix64 () from /lib64/libffi.so.6
#8  0x00007f5cea861107 in ffi_call () from /lib64/libffi.so.6
#9  0x00007f5cece51d10 in wl_closure_invoke.constprop () from /lib64/libwayland-client.so.0
#10 0x00007f5cece5242b in dispatch_event.isra () from /lib64/libwayland-client.so.0
#11 0x00007f5cece5261c in wl_display_dispatch_queue_pending () from /lib64/libwayland-client.so.0
#12 0x00007f5cecedc5df in QtWaylandClient::QWaylandDisplay::flushRequests() () from /lib64/libQt5WaylandClient.so.5
#13 0x00007f5cef4f2ce0 in void doActivate<false>(QObject*, int, void**) () from /lib64/libQt5Core.so.5
#14 0x00007f5cef51072b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#15 0x00007f5cef4bdab2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#16 0x00007f5cef4c5fe4 in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#17 0x0000559158b4c58c in main ()
[Inferior 1 (process 3365) detached]

The reporter indicates this bug may be a duplicate of or related to bug 439660.

Possible duplicates by query: bug 440643, bug 440616, bug 440460, bug 440438, bug 439808.

Reported using DrKonqi