Bug 381032

Summary: Crashes when Wayland shows a transient window [wl_shell_surface_set_transient, wl_proxy_marshal_array_constructor]
Product: [Plasma] plasmashell Reporter: Patrick Silva <bugseforuns>
Component: generic-waylandAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED UPSTREAM    
Severity: crash CC: aramgrigoryan, bholmes, bhush94, bugseforuns, david.adler, fabian, jodr666, joergister, kde-bugs.9ek5t, kde, notmart, notuxius, plasma-bugs, simonandric5, soloturn
Priority: NOR Keywords: drkonqi
Version: master   
Target Milestone: 1.0   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Patrick Silva 2017-06-09 21:08:09 UTC 
Application: plasmashell (5.10.90)

Qt Version: 5.9.0
Frameworks Version: 5.35.0
Operating System: Linux 4.8.0-51-generic x86_64
Distribution: KDE neon Developer Edition

-- Information about the crash:
- What I was doing when the application crashed:
open system settings or konsole from your favorite apps list in apps menu
plasma crashes
I can repdouce this crash on Arch running plasma 5.10.1, qt 5.9 too

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2a156ae8c0 (LWP 1211))]

Thread 11 (Thread 0x7f2945af9700 (LWP 1465)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2a105f746b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x52d48f0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x52c76b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f2a136de03d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f2a136de935 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f2a105f6509 in QThreadPrivate::start (arg=0x52c7630) at thread/qthread_unix.cpp:368
#6  0x00007f2a0f49d6ba in start_thread (arg=0x7f2945af9700) at pthread_create.c:333
#7  0x00007f2a0ff0482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f2946863700 (LWP 1464)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2a105f746b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x3d35fe0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3d35e20, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f2a136de03d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f2a136de935 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f2a105f6509 in QThreadPrivate::start (arg=0x3d35da0) at thread/qthread_unix.cpp:368
#6  0x00007f2a0f49d6ba in start_thread (arg=0x7f2946863700) at pthread_create.c:333
#7  0x00007f2a0ff0482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f2947cf9700 (LWP 1301)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2a105f746b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x2627dc0) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2807f00, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f2a136de03d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f2a136de935 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f2a105f6509 in QThreadPrivate::start (arg=0x2807e80) at thread/qthread_unix.cpp:368
#6  0x00007f2a0f49d6ba in start_thread (arg=0x7f2947cf9700) at pthread_create.c:333
#7  0x00007f2a0ff0482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f294e036700 (LWP 1300)):
#0  0x00007f2a0fef8b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2a0b6bf38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2a0b6bf49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2a10818adb in QEventDispatcherGlib::processEvents (this=0x7f29480008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f2a107c230a in QEventLoop::exec (this=this@entry=0x7f294e035d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f2a105f1af4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007f2a105f6509 in QThreadPrivate::start (arg=0x2464cf0) at thread/qthread_unix.cpp:368
#7  0x00007f2a0f49d6ba in start_thread (arg=0x7f294e036700) at pthread_create.c:333
#8  0x00007f2a0ff0482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f295ffff700 (LWP 1287)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2a105f746b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x15e4280) at thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x15e0a10, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#3  0x00007f2a136de03d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f2a136de935 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f2a105f6509 in QThreadPrivate::start (arg=0x15e0990) at thread/qthread_unix.cpp:368
#6  0x00007f2a0f49d6ba in start_thread (arg=0x7f295ffff700) at pthread_create.c:333
#7  0x00007f2a0ff0482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f29664f3700 (LWP 1286)):
#0  0x00007f2a0fef469d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2a0b7026f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2a0b6bee74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2a0b6bf330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2a0b6bf49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2a10818adb in QEventDispatcherGlib::processEvents (this=0x7f29600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f2a107c230a in QEventLoop::exec (this=this@entry=0x7f29664f2c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#7  0x00007f2a105f1af4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#8  0x00007f2a1365e1c6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f2a105f6509 in QThreadPrivate::start (arg=0x15d9ce0) at thread/qthread_unix.cpp:368
#10 0x00007f2a0f49d6ba in start_thread (arg=0x7f29664f3700) at pthread_create.c:333
#11 0x00007f2a0ff0482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f29f35ba700 (LWP 1285)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2a15103784 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f2a151037c9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f2a0f49d6ba in start_thread (arg=0x7f29f35ba700) at pthread_create.c:333
#4  0x00007f2a0ff0482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f29f9f99700 (LWP 1284)):
#0  0x00007f2a0b6be9a0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2a0b6bf2bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2a0b6bf49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2a10818adb in QEventDispatcherGlib::processEvents (this=0x7f29ec0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f2a107c230a in QEventLoop::exec (this=this@entry=0x7f29f9f98ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f2a105f1af4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007f2a12cbb075 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f2a105f6509 in QThreadPrivate::start (arg=0xf54bf0) at thread/qthread_unix.cpp:368
#8  0x00007f2a0f49d6ba in start_thread (arg=0x7f29f9f99700) at pthread_create.c:333
#9  0x00007f2a0ff0482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f29fb9e3700 (LWP 1283)):
#0  0x00007f2a0fef8b61 in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2a0b6bf38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2a0b6bf49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2a10818adb in QEventDispatcherGlib::processEvents (this=0x7f29f40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f2a107c230a in QEventLoop::exec (this=this@entry=0x7f29fb9e2ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f2a105f1af4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007f2a12cbb075 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f2a105f6509 in QThreadPrivate::start (arg=0xf12f50) at thread/qthread_unix.cpp:368
#8  0x00007f2a0f49d6ba in start_thread (arg=0x7f29fb9e3700) at pthread_create.c:333
#9  0x00007f2a0ff0482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f2a014eb700 (LWP 1228)):
#0  0x00007f2a0fef8b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2a0b6bf38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2a0b6bf49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2a10818adb in QEventDispatcherGlib::processEvents (this=0x7f29fc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f2a107c230a in QEventLoop::exec (this=this@entry=0x7f2a014eacd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f2a105f1af4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007f2a157edb75 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f2a105f6509 in QThreadPrivate::start (arg=0x7f2a15863da0) at thread/qthread_unix.cpp:368
#8  0x00007f2a0f49d6ba in start_thread (arg=0x7f2a014eb700) at pthread_create.c:333
#9  0x00007f2a0ff0482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f2a156ae8c0 (LWP 1211)):
[KCrash Handler]
#6  0x00007f2a0fe33428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#7  0x00007f2a0fe3502a in __GI_abort () at abort.c:89
#8  0x00007f2a0f2909ff in wl_abort (fmt=fmt@entry=0x7f2a0f290ac0 "Error marshalling request: %s\n") at ../src/wayland-util.c:418
#9  0x00007f2a0f28cc05 in wl_proxy_marshal_array_constructor_versioned (proxy=proxy@entry=0x1cd0850, opcode=opcode@entry=4, args=args@entry=0x7ffd4c15f240, interface=interface@entry=0x0, version=1) at ../src/wayland-client.c:653
#10 0x00007f2a0f28cc29 in wl_proxy_marshal_array_constructor (proxy=proxy@entry=0x1cd0850, opcode=opcode@entry=4, args=args@entry=0x7ffd4c15f240, interface=interface@entry=0x0) at ../src/wayland-client.c:599
#11 0x00007f2a0f28cd1c in wl_proxy_marshal (proxy=0x1cd0850, opcode=opcode@entry=4) at ../src/wayland-client.c:696
#12 0x00007f2a02dcd56b in wl_shell_surface_set_transient (flags=<optimized out>, y=y@entry=53, x=x@entry=49, parent=<optimized out>, wl_shell_surface=<optimized out>) at ../../include/QtWaylandClient/5.9.0/QtWaylandClient/private/wayland-wayland-client-protocol.h:2386
#13 QtWayland::wl_shell_surface::set_transient (this=this@entry=0x1ccf7c8, parent=<optimized out>, x=x@entry=49, y=y@entry=53, flags=<optimized out>) at qwayland-wayland.cpp:962
#14 0x00007f2a02dafcae in QtWaylandClient::QWaylandWlShellSurface::updateTransientParent (this=0x1ccf7b0, parent=0x1e3ba20) at qwaylandwlshellsurface.cpp:191
#15 0x00007f2a02dadeda in QtWaylandClient::QWaylandWindow::initWindow (this=this@entry=0x1d016b0) at qwaylandwindow.cpp:149
#16 0x00007f2a02dae4f5 in QtWaylandClient::QWaylandWindow::setVisible (this=0x1d016b0, visible=<optimized out>) at qwaylandwindow.cpp:338
#17 0x00007f29f2ab3434 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/wayland-graphics-integration-client/libwayland-egl.so
#18 0x00007f2a10bc4629 in QWindow::setVisible (this=0x1cdd1f0, visible=<optimized out>) at kernel/qwindow.cpp:587
#19 0x00007f29f0aa5f6c in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/core/libcorebindingsplugin.so
#20 0x00007f2a107f03f6 in QtPrivate::QSlotObjectBase::call (a=0x7ffd4c15f720, r=0x52bb1c0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:101
#21 QMetaObject::activate (sender=sender@entry=0x52c3360, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd4c15f720) at kernel/qobject.cpp:3749
#22 0x00007f2a107f09d7 in QMetaObject::activate (sender=sender@entry=0x52c3360, m=m@entry=0x7f2a10a81700 <QTimer::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd4c15f720) at kernel/qobject.cpp:3628
#23 0x00007f2a108697c7 in QTimer::timeout (this=this@entry=0x52c3360, _t1=...) at .moc/moc_qtimer.cpp:201
#24 0x00007f2a107fc8e8 in QTimer::timerEvent (this=0x52c3360, e=<optimized out>) at kernel/qtimer.cpp:255
#25 0x00007f2a107f10c3 in QObject::event (this=0x52c3360, e=<optimized out>) at kernel/qobject.cpp:1268
#26 0x00007f2a111303fc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x52c3360, e=0x7ffd4c15fa10) at kernel/qapplication.cpp:3717
#27 0x00007f2a11137e07 in QApplication::notify (this=0x7ffd4c15fdd0, receiver=0x52c3360, e=0x7ffd4c15fa10) at kernel/qapplication.cpp:3476
#28 0x00007f2a107c4128 in QCoreApplication::notifyInternal2 (receiver=0x52c3360, event=event@entry=0x7ffd4c15fa10) at kernel/qcoreapplication.cpp:1018
#29 0x00007f2a108176fe in QCoreApplication::sendEvent (event=0x7ffd4c15fa10, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#30 QTimerInfoList::activateTimers (this=0xe88fb0) at kernel/qtimerinfo_unix.cpp:643
#31 0x00007f2a10817f99 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:182
#32 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:229
#33 0x00007f2a0b6bf197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f2a0b6bf3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f2a0b6bf49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f2a10818abf in QEventDispatcherGlib::processEvents (this=0xea0420, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#37 0x00007f2a107c230a in QEventLoop::exec (this=this@entry=0x7ffd4c15fc60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#38 0x00007f2a107cadb4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1291
#39 0x00007f2a10bb22cc in QGuiApplication::exec () at kernel/qguiapplication.cpp:1666
#40 0x00007f2a11130355 in QApplication::exec () at kernel/qapplication.cpp:2905
#41 0x000000000041ce18 in main (argc=1, argv=<optimized out>) at /workspace/build/shell/main.cpp:166

Reported using DrKonqi
Comment 1 Christoph Feck 2017-06-10 10:25:40 UTC 
This looks like a bug in wayland libraries.
Comment 2 Christoph Feck 2017-07-12 12:47:11 UTC 
*** Bug 375992 has been marked as a duplicate of this bug. ***
Comment 3 Christoph Feck 2017-07-12 12:47:47 UTC 
*** Bug 382120 has been marked as a duplicate of this bug. ***
Comment 4 Christoph Feck 2017-07-12 12:48:11 UTC 
*** Bug 381889 has been marked as a duplicate of this bug. ***
Comment 5 Christoph Feck 2017-07-12 12:48:52 UTC 
*** Bug 381764 has been marked as a duplicate of this bug. ***
Comment 6 Alexander Mentyu 2017-08-17 13:46:07 UTC 
This bug no longer appears for me in:

Distribution: KDE neon Developer Edition Unstable Branches 20170813
KDE Plasma Version: 5.10.90
KDE Frameworks Version: 5.37.0
Qt Version: 5.9.1
Kernel Version: 4.10.0-32-generic
OS Type: 64-bit

I launched various apps from favourites: Firefox, VLC, Konsole, Dolphin, Kate, System Settings from Application Launcher.
Comment 7 Patrick Silva 2017-08-17 14:15:44 UTC 
Just tested on neon dev unstable...
This crash is still happening and kicker menu is unusable under Wayland now because it crashes on mouseover too.
Comment 8 Alexander Mentyu 2017-08-18 08:50:07 UTC 
(In reply to Dr. Chapatin from comment #7)
> Just tested on neon dev unstable...
> This crash is still happening and kicker menu is unusable under Wayland now
> because it crashes on mouseover too.

Think i mixed Kickoff with Kicker. Choosing of favorites is working in Kickoff but Plasma almost always crashes after selecting favorites in Kicker. Possibly duplicate/related bug to this one - https://bugs.kde.org/show_bug.cgi?id=383659
Comment 9 Christoph Feck 2017-08-22 11:07:31 UTC 
*** Bug 383184 has been marked as a duplicate of this bug. ***
Comment 10 Christoph Feck 2017-08-23 14:15:41 UTC 
*** Bug 383879 has been marked as a duplicate of this bug. ***
Comment 11 Christoph Feck 2017-08-23 22:25:56 UTC 
*** Bug 383920 has been marked as a duplicate of this bug. ***
Comment 12 Christoph Feck 2017-09-13 21:26:12 UTC 
*** Bug 384193 has been marked as a duplicate of this bug. ***
Comment 13 David Edmundson 2017-09-28 10:18:26 UTC 

*** This bug has been marked as a duplicate of bug 385165 ***
Comment 14 David Edmundson 2017-09-28 10:32:00 UTC 
*** Bug 385165 has been marked as a duplicate of this bug. ***
Comment 15 Christoph Feck 2017-10-04 13:49:55 UTC 
*** Bug 382843 has been marked as a duplicate of this bug. ***
Comment 16 David Edmundson 2017-10-13 16:43:07 UTC 
*** Bug 385700 has been marked as a duplicate of this bug. ***
Comment 17 Fabian Vogt 2017-11-11 21:27:51 UTC 
This might be fixed in Qt 5.10.0-beta3: https://github.com/qt/qtwayland/commit/a5c4af696b4fa0747b278830d07f4360e73b1f63
Comment 18 David Edmundson 2017-11-11 23:23:11 UTC 
Lets assume so.

Also we're not using wl_shell_surface in the next release.

Lets reopen if we see it with Qt5.10 release and XDG shell.
Comment 19 David Edmundson 2017-11-15 13:26:33 UTC 
*** Bug 386305 has been marked as a duplicate of this bug. ***
Comment 20 David Edmundson 2017-11-15 13:26:41 UTC 
*** Bug 386836 has been marked as a duplicate of this bug. ***
Comment 21 David Edmundson 2017-11-15 13:26:56 UTC 
*** Bug 386930 has been marked as a duplicate of this bug. ***
Comment 22 Christoph Feck 2017-11-23 23:34:22 UTC 
*** Bug 386661 has been marked as a duplicate of this bug. ***
Comment 23 Christoph Feck 2018-03-30 16:12:56 UTC 
Recent reports say we are still getting wl_proxy_marshal_array_constructor crashes, even with Qt 5.10.

https://bugs.kde.org/buglist.cgi?bug_severity=crash&bug_severity=normal&bug_status=UNCONFIRMED&chfieldfrom=180d&longdesc=wl_proxy_marshal&longdesc_type=allwordssubstr&query_format=advanced

No idea if these are duplicates of Qt bugs, or could be caused by issues in KWayland or libwayland.