Bug 439670

Application: systemsettings5 (5.22.2)

Qt Version: 5.15.2
Frameworks Version: 5.83.0
Operating System: Linux 5.12.13-300.fc34.x86_64 x86_64
Windowing System: Wayland
Drkonqi Version: 5.22.2
Distribution: Fedora 34 (Workstation Edition)

-- Information about the crash:
- What I was doing when the application crashed:
in KDE, I changed the Task Switcher to "Black Icons" under System Settings --> Window Management --> Task Switcher.
The Black Icons was a custom task switcher which I had installed in Fedora 33 via Disovery. Now I have upgraded to Fedora 34 and tried changing the Task Switcher.
After changing the task switcher, when I pressed "Alt+Tab" to switch focus this component crashed.

The reporter is unsure if this crash is reproducible.

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

[KCrash Handler]
#4  0x00007fdd1fa06f34 in QWaylandClientExtensionPrivate::handleRegistryGlobal(void*, wl_registry*, unsigned int, QString const&, unsigned int) () from /lib64/libQt5WaylandClient.so.5
#5  0x00007fdd1f9f3419 in QtWaylandClient::QWaylandDisplay::registry_global(unsigned int, QString const&, unsigned int) () from /lib64/libQt5WaylandClient.so.5
#6  0x00007fdd1fa0f7c3 in QtWayland::wl_registry::handle_global(void*, wl_registry*, unsigned int, char const*, unsigned int) () from /lib64/libQt5WaylandClient.so.5
#7  0x00007fdd1d371c04 in ffi_call_unix64 () from /lib64/libffi.so.6
#8  0x00007fdd1d371107 in ffi_call () from /lib64/libffi.so.6
#9  0x00007fdd1f960d10 in wl_closure_invoke.constprop () from /lib64/libwayland-client.so.0
#10 0x00007fdd1f96142b in dispatch_event.isra () from /lib64/libwayland-client.so.0
#11 0x00007fdd1f96161c in wl_display_dispatch_queue_pending () from /lib64/libwayland-client.so.0
#12 0x00007fdd1f9eb7a3 in QtWaylandClient::QWaylandDisplay::flushRequests() () from /lib64/libQt5WaylandClient.so.5
#13 0x00007fdd22000ce0 in void doActivate<false>(QObject*, int, void**) () from /lib64/libQt5Core.so.5
#14 0x00007fdd2200343a in QSocketNotifier::activated(QSocketDescriptor, QSocketNotifier::Type, QSocketNotifier::QPrivateSignal) () from /lib64/libQt5Core.so.5
#15 0x00007fdd22003c53 in QSocketNotifier::event(QEvent*) () from /lib64/libQt5Core.so.5
#16 0x00007fdd22b99423 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#17 0x00007fdd21fcd098 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#18 0x00007fdd2201f11f in socketNotifierSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#19 0x00007fdd1fd564cf in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#20 0x00007fdd1fdaa4e8 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#21 0x00007fdd1fd53c03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#22 0x00007fdd2201e698 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#23 0x00007fdd21fcbab2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#24 0x00007fdd21fd3fe4 in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#25 0x000055e4179af58c in main ()
[Inferior 1 (process 10992) detached]

Reported using DrKonqi