Bug 409105

Summary:	[wayland] crash when application launcher is present and clicked twice
Product:	[Plasma] lattedock	Reporter:	Marvin Hagemeister <hello>
Component:	application	Assignee:	Michail Vourlakos <mvourlakos>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	alois1
Priority:	NOR	Keywords:	wayland-only
Version:	git (master)
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Marvin Hagemeister 2019-06-24 05:10:30 UTC

SUMMARY

Lattedock crashes when the application launcher is present and the icon is clicked twice.

Output of `latte-dock -d`

```
[debug 6:57:12.994994] - syncGeometry() ended...
[warning 6:57:46.0505] - Non-toplevel surfaces can't request window states
[warning 6:57:46.088088] - Delivering update request through fallback timer, may not be in sync with display
[warning 6:57:46.205205] - Delivering update request through fallback timer, may not be in sync with display
[warning 6:57:46.421421] - Non-toplevel surfaces can't request window states
[warning 6:57:46.725725] - Non-toplevel surfaces can't request window states
[warning 6:57:47.484484] - Wayland does not support QWindow::requestActivate()
KCrash: Attempting to start /usr/bin/latte-dock directly
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = latte-dock path = /usr/bin pid = 7978
KCrash: Arguments: /usr/bin/latte-dock --replace -d 
KCrash: Attempting to start /usr/lib/drkonqi directly
[warning 6:57:48.916916] - QSocketNotifier: Invalid socket 6 and type 'Read', disabling...
[warning 6:57:48.916916] - QSocketNotifier: Invalid socket 23 and type 'Read', disabling...
```

STEPS TO REPRODUCE
1. Put default KDE Launcher in latte-dock
2. Click twice on the launcher icon
3. click anywhere outside like on the desktop
4. -> Crash

OBSERVED RESULT

latte-dock crashes and restarts


EXPECTED RESULT

latte-dock should not crash

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Arch Linux
(available in About System)
KDE Plasma Version: 5.16.1
KDE Frameworks Version: 5.59.0
Qt Version: 5.12.4

ADDITIONAL INFORMATION

Comment 1 Michail Vourlakos 2019-06-24 05:38:52 UTC

For wayland issues you must check out if this is valid in git version

Comment 2 Michail Vourlakos 2019-06-24 05:38:56 UTC

For wayland issues you must check out if this is valid in git version

Comment 3 Marvin Hagemeister 2019-06-24 07:28:20 UTC

That's good to now. Just checked against the git version and it crashes too.

Comment 4 Michail Vourlakos 2019-06-24 08:53:55 UTC

1. What is the crash report for Latte git version
2. Plasma panel does it crash with the same steps?

Comment 5 Michail Vourlakos 2019-06-24 14:37:53 UTC

for me it crashes but without triggering kcrash I dont know why...

I get:

wl_display@1: error 0: invalid object 2311
[critical 17:36:27.428428] - The Wayland connection experienced a fatal error (Μη έγκυρη παράμετρος)
qErrnoWarning
?libQt5WaylandClient.so.5?
QtWaylandClient::QWaylandDisplay::flushRequests
QMetaObject::activate
QEventDispatcherGlib::processEvents
QEventLoop::exec
QCoreApplication::exec
main

which is totally upstream...

Comment 6 Marvin Hagemeister 2019-06-24 15:47:04 UTC

Tried getting a stack trace by running latte via gdb. I hope this is correct, as I'm not at all familiar with native development. This is the trace:

Thread 15 "QSGRenderThread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffad3db700 (LWP 25621)]
0x00007ffff4c95e94 in wl_proxy_marshal_constructor ()
   from /usr/lib/libwayland-client.so.0
(gdb) bt
#0  0x00007ffff4c95e94 in wl_proxy_marshal_constructor ()
    at /usr/lib/libwayland-client.so.0
#1  0x00007ffff09b319b in QtWaylandClient::QWaylandWindow::handleUpdate() ()
    at /usr/lib/libQt5WaylandClient.so.5
#2  0x00007fffedf33d78 in  ()
    at /usr/lib/qt/plugins/wayland-graphics-integration-client/libqt-plugin-wayland-egl.so
#3  0x00007ffff6263142 in QOpenGLContext::swapBuffers(QSurface*) ()
    at /usr/lib/libQt5Gui.so.5
#4  0x00007ffff77fd82e in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007ffff78016f8 in  () at /usr/lib/libQt5Quick.so.5
#6  0x00007ffff5b2ebf0 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007ffff49b257f in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007ffff5660f13 in clone () at /usr/lib/libc.so.6

Comment 7 Michail Vourlakos 2019-06-24 16:07:49 UTC

totally Qt and wayland issue

Comment 8 Alois Wohlschlager 2019-06-25 08:44:19 UTC

I can confirm this bug with the default panel. There, the segfault hits plasmashell.

Comment 9 Alois Wohlschlager 2019-06-25 08:53:57 UTC

The same crash in Qt.

*** This bug has been marked as a duplicate of bug 409050 ***