SUMMARY

Sometimes when applying a look and feel in the KCM kwin_wayland crashes. Happend with Breeze and 'Sweet' from the store.

KDE stuff from master, Qt from 5.15

#0  0x00007ff5b5865f43 in  () at /usr/lib/libwayland-server.so.0
#1  0x00007ff5b58622dc in  () at /usr/lib/libwayland-server.so.0
#2  0x00007ff5b5863faa in wl_event_loop_dispatch () at /usr/lib/libwayland-server.so.0
#3  0x00007ff5b7fcd68f in KWaylandServer::Display::Private::dispatch() (this=0x55dd3ae2f1e0) at /home/nico/kde/src/kwayland-server/src/server/display.cpp:134
#4  0x00007ff5b7fcd2bf in operator()() const (__closure=0x55dd3ae149d0) at /home/nico/kde/src/kwayland-server/src/server/display.cpp:102
#5  0x00007ff5b7fd6214 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, KWaylandServer::Display::Private::installSocketNotifier()::<lambda()> >::call(struct {...} &, void **) (f=..., arg=0x7ffe4390f390)
    at /home/nico/kde/usr/include/QtCore/qobjectdefs_impl.h:146
#6  0x00007ff5b7fd5aa3 in QtPrivate::Functor<KWaylandServer::Display::Private::installSocketNotifier()::<lambda()>, 0>::call<QtPrivate::List<>, void>(struct {...} &, void *, void **) (f=..., arg=0x7ffe4390f390)
    at /home/nico/kde/usr/include/QtCore/qobjectdefs_impl.h:256
#7  0x00007ff5b7fd4016 in QtPrivate::QFunctorSlotObject<KWaylandServer::Display::Private::installSocketNotifier()::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *)
    (which=1, this_=0x55dd3ae149c0, r=0x55dd3ae2ee70, a=0x7ffe4390f390, ret=0x0) at /home/nico/kde/usr/include/QtCore/qobjectdefs_impl.h:443
#8  0x00007ff5b6bf9e46 in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7ffe4390f390, r=0x55dd3ae2ee70, this=0x55dd3ae149c0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#9  doActivate<false>(QObject*, int, void**) (sender=0x55dd3ae149a0, signal_index=3, argv=argv@entry=0x7ffe4390f390) at kernel/qobject.cpp:3886
#10 0x00007ff5b6bf31a0 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**)
    (sender=sender@entry=0x55dd3ae149a0, m=m@entry=0x7ff5b6e92a80 <QSocketNotifier::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe4390f390) at kernel/qobject.cpp:3946
#11 0x00007ff5b6bfd27f in QSocketNotifier::activated(QSocketDescriptor, QSocketNotifier::Type, QSocketNotifier::QPrivateSignal) (this=this@entry=0x55dd3ae149a0, _t1=..., _t2=<optimized out>, _t3=...) at .moc/moc_qsocketnotifier.cpp:178
#12 0x00007ff5b6bfda7b in QSocketNotifier::event(QEvent*) (this=0x55dd3ae149a0, e=0x7ffe4390f4a0) at kernel/qsocketnotifier.cpp:302
#13 0x00007ff5b76890ef in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0x55dd3ae149a0, e=0x7ffe4390f4a0) at kernel/qapplication.cpp:3671
#14 0x00007ff5b6bc39aa in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55dd3ae149a0, event=0x7ffe4390f4a0) at ../../include/QtCore/5.15.0/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#15 0x00007ff5b6c1812b in QEventDispatcherUNIXPrivate::activateSocketNotifiers() (this=0x55dd3add99d0) at kernel/qeventdispatcher_unix.cpp:304
#16 0x00007ff5b6c1858b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:511
#17 0x00007ff5b26d722d in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at qunixeventdispatcher.cpp:63
#18 0x00007ff5b6bc236b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffe4390f630, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#19 0x00007ff5b6bca5d0 in QCoreApplication::exec() () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#20 0x000055dd3a63dbbb in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /home/nico/kde/src/kwin/main_wayland.cpp:704