SUMMARY
Sometimes my system generates coredump of kwalletd5 after logout from Wayland session.

STEPS TO REPRODUCE
1. start Wayland session
2. logout
3. 

EXPECTED RESULT
no coredump after logout


SOFTWARE/OS VERSIONS
Operating System: KDE neon Unstable Edition
KDE Plasma Version: 5.20.80
KDE Frameworks Version: 5.78.0
Qt Version: 5.15.2


Thread 2 (Thread 0x7f927ab08700 (LWP 11814)):
#0  0x00007f9280008aff in __GI___poll (fds=0x7f9274005240, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f927f00f1ae in g_main_context_poll (priority=<optimized out>, n_fds=2, fds=0x7f9274005240, timeout=<optimized out>, context=0x7f9274000c20) at ../../../glib/gmain.c:4346
#2  g_main_context_iterate (context=context@entry=0x7f9274000c20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4042
#3  0x00007f927f00f2e3 in g_main_context_iteration (context=0x7f9274000c20, may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#4  0x00007f92805f0fa2 in QEventDispatcherGlib::processEvents (this=0x7f9274000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#5  0x00007f92805951ab in QEventLoop::exec (this=this@entry=0x7f927ab07cf0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007f92803afa12 in QThread::exec (this=this@entry=0x7f92808d4d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007f9280850f4b in QDBusConnectionManager::run (this=0x7f92808d4d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:179
#8  0x00007f92803b0bac in QThreadPrivate::start (arg=0x7f92808d4d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:329
#9  0x00007f9281829609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007f9280015293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f927ce77880 (LWP 11686)):
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x00007f927ff18859 in __GI_abort () at abort.c:79
#2  0x00007f9280375be7 in qt_message_fatal (context=..., message=<synthetic pointer>...) at global/qlogging.cpp:1914
#3  QMessageLogger::fatal (this=this@entry=0x7ffd4db48030, msg=msg@entry=0x7f927ef3c0b8 "The Wayland connection broke. Did the Wayland compositor die?") at global/qlogging.cpp:893
#4  0x00007f927ee7fd65 in QtWaylandClient::QWaylandDisplay::checkError (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qlogging.h:90
#5  QtWaylandClient::QWaylandDisplay::checkError (this=<optimized out>) at qwaylanddisplay.cpp:204
#6  0x00007f927ee9116c in QtWaylandClient::QWaylandDisplay::flushRequests (this=0x5583f59baed0) at qwaylanddisplay.cpp:222
#7  0x00007f92805cd6f0 in doActivate<false> (sender=0x5583f59fb120, signal_index=4, argv=0x7ffd4db48140) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:395
#8  0x00007f92805c6a87 in QMetaObject::activate (sender=sender@entry=0x5583f59fb120, m=m@entry=0x7f92808301e0 <QAbstractEventDispatcher::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x0) at kernel/qobject.cpp:3946
#9  0x00007f9280593247 in QAbstractEventDispatcher::awake (this=this@entry=0x5583f59fb120) at .moc/moc_qabstracteventdispatcher.cpp:149
#10 0x00007f92805f0fdc in QEventDispatcherGlib::processEvents (this=0x5583f59fb120, flags=...) at kernel/qeventdispatcher_glib.cpp:430
#11 0x00007f92805951ab in QEventLoop::exec (this=this@entry=0x7ffd4db48260, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#12 0x00007f928059d354 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#13 0x00005583f51201f6 in ?? ()
#14 0x00007f927ff1a0b3 in __libc_start_main (main=0x5583f511fa10, argc=4, argv=0x7ffd4db48588, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd4db48578) at ../csu/libc-start.c:308
#15 0x00005583f512066e in ?? ()