QtWaylandClient::QWaylandDisplay::exitWithError() (this=this@entry=0x555555f294b0) at qwaylanddisplay.cpp:200

I am opening this bugreport after being told by David Edmundson of KDE, in the bugreport https://bugs.kde.org/show_bug.cgi?id=378708

Konversation 1.6.2 crashes on Wayland.
Video driver: amdgpu

$ gdb konversation
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Reading symbols from konversation...Reading symbols from /usr/lib/debug/usr/bin/konversation.debug...done.
done.
(gdb) run
Starting program: /usr/bin/konversation
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
QObject::connect: invalid null parameter
[New Thread 0x7fffdaabc700 (LWP 23080)]
[New Thread 0x7fffd96a5700 (LWP 23081)]
[New Thread 0x7fffd1216700 (LWP 23083)]
[New Thread 0x7fffd0810700 (LWP 23084)]
[New Thread 0x7fffc947c700 (LWP 23085)]
[New Thread 0x7fffc8c7b700 (LWP 23086)]
[New Thread 0x7fffc847a700 (LWP 23087)]
[New Thread 0x7fffc45a9700 (LWP 23088)]
[New Thread 0x7fffc3b59700 (LWP 23089)]
[New Thread 0x7fffc3356700 (LWP 23090)]
[New Thread 0x7fffc2b55700 (LWP 23091)]
[New Thread 0x7fffc2354700 (LWP 23092)]

[Thread 0x7fffc3356700 (LWP 23090) exited]
[Thread 0x7fffc2354700 (LWP 23092) exited]
[Thread 0x7fffc3b59700 (LWP 23089) exited]
[Thread 0x7fffc45a9700 (LWP 23088) exited]
[Thread 0x7fffc2b55700 (LWP 23091) exited]
sonnet.core: No language dictionaries for the language: "it"
The Wayland connection broke. Did the Wayland compositor die?

Thread 2 "QDBusConnection" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffdaabc700 (LWP 23080)]
0x00007ffff1b79f8d in QObject::disconnect (sender=0x7fffcc004ed0, signal=signal@entry=0x0, receiver=receiver@entry=0x7fffd4011cc0, method=method@entry=0x0) at kernel/qobject.cpp:2956
2956 const QMetaObject *smeta = sender->metaObject();
(gdb) thread apply all backtrace

Thread 8 (Thread 0x7fffc847a700 (LWP 23087)):
#0 0x00007fffef984460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fffd26d4c5b in cnd_wait (mtx=0x55555607aa78, cond=0x55555607aaa0) at ../../../include/c11/threads_posix.h:159
#2 0x00007fffd26d4c5b in util_queue_thread_func (input=input@entry=0x555555f620b0) at util/u_queue.c:76
#3 0x00007fffd26d4ab7 in impl_thrd_routine (p=<optimized out>) at ../../../include/c11/threads_posix.h:87
#4 0x00007fffef97e6ca in start_thread (arg=0x7fffc847a700) at pthread_create.c:333
#5 0x00007ffff0da0f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7fffc8c7b700 (LWP 23086)):
#0 0x00007fffef984460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fffd26d4c5b in cnd_wait (mtx=0x55555607aa78, cond=0x55555607aaa0) at ../../../include/c11/threads_posix.h:159
#2 0x00007fffd26d4c5b in util_queue_thread_func (input=input@entry=0x555555f620b0) at util/u_queue.c:76
#3 0x00007fffd26d4ab7 in impl_thrd_routine (p=<optimized out>) at ../../../include/c11/threads_posix.h:87
#4 0x00007fffef97e6ca in start_thread (arg=0x7fffc8c7b700) at pthread_create.c:333
#5 0x00007ffff0da0f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7fffc947c700 (LWP 23085)):
#0 0x00007fffef984460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fffd26d4c5b in cnd_wait (mtx=0x55555607aa78, cond=0x55555607aaa0) at ../../../include/c11/threads_posix.h:159
#2 0x00007fffd26d4c5b in util_queue_thread_func (input=input@entry=0x555555f620b0) at util/u_queue.c:76
#3 0x00007fffd26d4ab7 in impl_thrd_routine (p=<optimized out>) at ../../../include/c11/threads_posix.h:87
#4 0x00007fffef97e6ca in start_thread (arg=0x7fffc947c700) at pthread_create.c:333
#5 0x00007ffff0da0f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7fffd0810700 (LWP 23084)):
#0 0x00007fffef984460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fffd26d4c5b in cnd_wait (mtx=0x55555607aa78, cond=0x55555607aaa0) at ../../../include/c11/threads_posix.h:159
--Type <return> to continue, or q <return> to quit--
#2 0x00007fffd26d4c5b in util_queue_thread_func (input=input@entry=0x555555f620b0) at util/u_queue.c:76
#3 0x00007fffd26d4ab7 in impl_thrd_routine (p=<optimized out>) at ../../../include/c11/threads_posix.h:87
#4 0x00007fffef97e6ca in start_thread (arg=0x7fffd0810700) at pthread_create.c:333
#5 0x00007ffff0da0f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7fffd1216700 (LWP 23083)):
#0 0x00007fffef984460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fffd26d4c5b in cnd_wait (mtx=0x5555560795d8, cond=0x555556079600) at ../../../include/c11/threads_posix.h:159
#2 0x00007fffd26d4c5b in util_queue_thread_func (input=input@entry=0x555555f4ddc0) at util/u_queue.c:76
#3 0x00007fffd26d4ab7 in impl_thrd_routine (p=<optimized out>) at ../../../include/c11/threads_posix.h:87
#4 0x00007fffef97e6ca in start_thread (arg=0x7fffd1216700) at pthread_create.c:333
#5 0x00007ffff0da0f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7fffd96a5700 (LWP 23081)):
#0 0x00007ffff0d9501d in poll () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007fffea3df166 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fffcc003070, timeout=<optimized out>, context=0x7fffcc000990) at gmain.c:4228
#2 0x00007fffea3df166 in g_main_context_iterate (context=context@entry=0x7fffcc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3924
#3 0x00007fffea3df27c in g_main_context_iteration (context=0x7fffcc000990, may_block=may_block@entry=1) at gmain.c:3990
#4 0x00007ffff1b9d6cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fffcc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#5 0x00007ffff1b4e68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fffd96a4c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6 0x00007ffff19ab5e3 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7 0x00007ffff19af9ca in QThreadPrivate::start(void*) (arg=0x555555fa05e0) at thread/qthread_unix.cpp:368
#8 0x00007fffef97e6ca in start_thread (arg=0x7fffd96a5700) at pthread_create.c:333
#9 0x00007ffff0da0f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7fffdaabc700 (LWP 23080)):
#0 0x00007ffff1b79f8d in QObject::disconnect(QObject const*, char const*, QObject const*, char const*) (sender=0x7fffcc004ed0, signal=signal@entry=0x0, receiver=receiver@entry=0x7fffd4011cc0, method=method@entry=0x0) at kernel/qobject.cpp:2956
--Type <return> to continue, or q <return> to quit--
#1 0x00007ffff1dbbfb0 in QObject::disconnect(QObject const*, char const*) const (member=0x0, receiver=0x7fffd4011cc0, this=<optimized out>) at ../../src/corelib/kernel/qobject.h:336
#2 0x00007ffff1dbbfb0 in QDBusConnectionPrivate::closeConnection() (this=this@entry=0x7fffd4011cc0) at qdbusintegrator.cpp:1145
#3 0x00007ffff1da8852 in QDBusConnectionManager::run() (this=0x7ffff1e1e060 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:188
#4 0x00007ffff19af9ca in QThreadPrivate::start(void*) (arg=0x7ffff1e1e060 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:368
#5 0x00007fffef97e6ca in start_thread (arg=0x7fffdaabc700) at pthread_create.c:333
#6 0x00007ffff0da0f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7fffe5127e00 (LWP 23076)):
#0 0x00007fffef984460 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007ffff19b004a in QWaitConditionPrivate::wait(unsigned long) (time=18446744073709551615, this=0x555555fa12b0) at thread/qwaitcondition_unix.cpp:143
#2 0x00007ffff19b004a in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x555555fa1290, mutex=mutex@entry=0x555555fa1270, time=time@entry=18446744073709551615)
at thread/qwaitcondition_unix.cpp:215
#3 0x00007ffff19af5ce in QThread::wait(unsigned long) (this=this@entry=0x7ffff1e1e060 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>, time=time@entry=18446744073709551615) at thread/qthread_unix.cpp:698
#4 0x00007ffff1da85a6 in QDBusConnectionManager::~QDBusConnectionManager() (this=0x7ffff1e1e060 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>, __in_chrg=<optimized out>) at qdbusconnection.cpp:157
#5 0x00007ffff1da8639 in (anonymous namespace)::Q_QGS__q_manager::Holder::~Holder() (this=<optimized out>, __in_chrg=<optimized out>) at qdbusconnection.cpp:76
#6 0x00007ffff0cd3410 in _run_exit_handlers (status=status@entry=1, listp=0x7ffff10595b8 <_exit_funcs>, run_list_atexit=run_list_atexit@entry=true, run_dtors=run_dtors@entry=true)
at exit.c:83
#7 0x00007ffff0cd346a in __GI_exit (status=status@entry=1) at exit.c:105
#8 0x00007fffde59194e in QtWaylandClient::QWaylandDisplay::exitWithError() (this=this@entry=0x555555f294b0) at qwaylanddisplay.cpp:200
#9 0x00007fffde5919a6 in QtWaylandClient::QWaylandDisplay::flushRequests() (this=0x555555f294b0) at qwaylanddisplay.cpp:183
#10 0x00007ffff1b76721 in QMetaObject::activate(QObject*, int, int, void**) (sender=sender@entry=0x555555fcb080, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x0) at kernel/qobject.cpp:3740
#11 0x00007ffff1b76fc7 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=sender@entry=0x555555fcb080, m=m@entry=0x7ffff1d8b9a0 <QAbstractEventDispatcher::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x0) at kernel/qobject.cpp:3602
#12 0x00007ffff1be5f33 in QAbstractEventDispatcher::awake() (this=this@entry=0x555555fcb080) at .moc/moc_qabstracteventdispatcher.cpp:143
#13 0x00007ffff1b9d70e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x555555fcb080, flags=...) at kernel/qeventdispatcher_glib.cpp:430
--Type <return> to continue, or q <return> to quit--
#14 0x00007ffff1b4e68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fffffffdb80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#15 0x00007ffff1b5618c in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1261
#16 0x000055555563b99e in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/konversation-1.6.2/src/main.cpp:163
(gdb)