Bug 440460

Application: systemsettings5 (5.22.4)

Qt Version: 5.15.2
Frameworks Version: 5.83.0
Operating System: Linux 5.13.5-200.fc34.x86_64 x86_64
Windowing System: Wayland
Drkonqi Version: 5.22.4
Distribution: Fedora 34 (Thirty Four)

-- Information about the crash:
- What I was doing when the application crashed:
I was using Plasma 5.22.4 on Wayland with KF 5.83.0, Qt 5.15.2, Mesa 21.1.5 in Fedora 34. I launched System Settings. I selected Display and Monitor > Compositor. I then set the latency preference to balance of latency and smoothness. I cliked on apply. System Settings crashed with segmentation fault.

The crash can be reproduced every time.

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

[KCrash Handler]
#4  0x00007f95370e3f34 in QWaylandClientExtensionPrivate::handleRegistryGlobal (data=0x55fced3c2a70, registry=0x55fce9ded480, id=48, interface=..., version=1) at global/qwaylandclientextension.cpp:67
#5  0x00007f95370d0419 in QtWaylandClient::QWaylandDisplay::registry_global (this=<optimized out>, id=<optimized out>, interface=..., version=<optimized out>) at /usr/src/debug/qt5-qtwayland-5.15.2-7.fc34.x86_64/src/client/qwaylanddisplay.cpp:397
#6  0x00007f95370ec7c3 in QtWayland::wl_registry::handle_global (data=0x55fce9de94d0, object=<optimized out>, name=48, interface=0x55fcee1cf170 "org_kde_kwin_blur_manager", version=1) at /usr/src/debug/qt5-qtwayland-5.15.2-7.fc34.x86_64/src/client/qwayland-wayland.cpp:94
#7  0x00007f9534a4dc04 in ffi_call_unix64 () at ../src/x86/unix64.S:76
#8  0x00007f9534a4d107 in ffi_call (cif=cif@entry=0x7ffd8c0ee940, fn=<optimized out>, rvalue=<optimized out>, rvalue@entry=0x0, avalue=avalue@entry=0x7ffd8c0eea10) at ../src/x86/ffi64.c:525
#9  0x00007f953703dd10 in wl_closure_invoke (closure=closure@entry=0x55fcee1cf090, target=<optimized out>, target@entry=0x55fce9ded480, opcode=opcode@entry=0, data=<optimized out>, flags=<optimized out>) at ../src/connection.c:1018
#10 0x00007f953703e42b in dispatch_event (display=0x55fce9ded330, queue=<optimized out>, queue=<optimized out>) at ../src/wayland-client.c:1452
#11 0x00007f953703e61c in dispatch_queue (queue=0x55fce9ded400, display=0x55fce9ded330) at ../src/wayland-client.c:1598
#12 wl_display_dispatch_queue_pending (display=0x55fce9ded330, queue=0x55fce9ded400) at ../src/wayland-client.c:1840
#13 0x00007f95370c85df in QtWaylandClient::QWaylandDisplay::flushRequests (this=0x55fce9de94c0) at /usr/src/debug/qt5-qtwayland-5.15.2-7.fc34.x86_64/src/client/qwaylanddisplay.cpp:222
#14 0x00007f95396ddce0 in doActivate<false> (sender=0x55fce9e7bdf0, signal_index=4, argv=0x7ffd8c0eec80) at kernel/qobject.cpp:3898
#15 0x00007f95396d8c27 in QMetaObject::activate (sender=sender@entry=0x55fce9e7bdf0, m=m@entry=0x7f953997cac0 <QAbstractEventDispatcher::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x0) at kernel/qobject.cpp:3946
#16 0x00007f95396a6b87 in QAbstractEventDispatcher::awake (this=this@entry=0x55fce9e7bdf0) at .moc/moc_qabstracteventdispatcher.cpp:149
#17 0x00007f95396fb72b in QEventDispatcherGlib::processEvents (this=0x55fce9e7bdf0, flags=...) at kernel/qeventdispatcher_glib.cpp:430
#18 0x00007f95396a8ab2 in QEventLoop::exec (this=this@entry=0x7ffd8c0eeda0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#19 0x00007f95396b0fe4 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#20 0x000055fce9bb158c in main (argc=<optimized out>, argv=0x7ffd8c0eeec0) at /usr/src/debug/plasma-systemsettings-5.22.4-1.fc34.x86_64/app/main.cpp:208
[Inferior 1 (process 5769) detached]

Possible duplicates by query: bug 440438, bug 439808, bug 439672, bug 439670, bug 439660.

Reported using DrKonqi