Bug 438656

Application: systemsettings5 (5.21.5)

Qt Version: 5.15.2
Frameworks Version: 5.82.0
Operating System: Linux 5.12.9-300.fc34.x86_64 x86_64
Windowing System: Wayland
Drkonqi Version: 5.21.5
Distribution: Fedora 34 (KDE Plasma)

-- Information about the crash:
- What I was doing when the application crashed:
In System Settings application, I wanted to change the task switcher from Breeze to any other option, it crashed. It, however, did change the task switcher.
I tried it again multiple times with multiple options, it did crash all the time.

The crash can be reproduced every time.

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

[KCrash Handler]
#4  0x00007fd2b7a5ef34 in QWaylandClientExtensionPrivate::handleRegistryGlobal(void*, wl_registry*, unsigned int, QString const&, unsigned int) () from /lib64/libQt5WaylandClient.so.5
#5  0x00007fd2b7a4b419 in QtWaylandClient::QWaylandDisplay::registry_global(unsigned int, QString const&, unsigned int) () from /lib64/libQt5WaylandClient.so.5
#6  0x00007fd2b7a677c3 in QtWayland::wl_registry::handle_global(void*, wl_registry*, unsigned int, char const*, unsigned int) () from /lib64/libQt5WaylandClient.so.5
#7  0x00007fd2b53f8c04 in ffi_call_unix64 () from /lib64/libffi.so.6
#8  0x00007fd2b53f8107 in ffi_call () from /lib64/libffi.so.6
#9  0x00007fd2b79b8d10 in wl_closure_invoke.constprop () from /lib64/libwayland-client.so.0
#10 0x00007fd2b79b942b in dispatch_event.isra () from /lib64/libwayland-client.so.0
#11 0x00007fd2b79b961c in wl_display_dispatch_queue_pending () from /lib64/libwayland-client.so.0
#12 0x00007fd2b7a437a3 in QtWaylandClient::QWaylandDisplay::flushRequests() () from /lib64/libQt5WaylandClient.so.5
#13 0x00007fd2b9dd04fd in void doActivate<false>(QObject*, int, void**) () from /lib64/libQt5Core.so.5
#14 0x00007fd2b9dd2b3a in QSocketNotifier::activated(QSocketDescriptor, QSocketNotifier::Type, QSocketNotifier::QPrivateSignal) () from /lib64/libQt5Core.so.5
#15 0x00007fd2b9dd32d4 in QSocketNotifier::event(QEvent*) () from /lib64/libQt5Core.so.5
#16 0x00007fd2ba92ae73 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#17 0x00007fd2b9d9ff48 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#18 0x00007fd2b9ded17f in socketNotifierSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#19 0x00007fd2b7b5f4cf in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#20 0x00007fd2b7bb34e8 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#21 0x00007fd2b7b5cc03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#22 0x00007fd2b9dec6f8 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#23 0x00007fd2b9d9e9b2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#24 0x00007fd2b9da6544 in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#25 0x0000564abfae1d4c in main ()
[Inferior 1 (process 8792) detached]

Reported using DrKonqi