Bug 491081

Summary:	Plasmashell crashes after tooltip gets stuck and reopening plasma-nm
Product:	[Plasma] plasmashell	Reporter:	duha.bugs
Component:	generic-crash	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED FIXED
Severity:	crash	CC:	nate
Priority:	NOR	Keywords:	drkonqi
Version:	master
Target Milestone:	1.0
Platform:	Compiled Sources
OS:	Linux
See Also:	https://bugs.kde.org/show_bug.cgi?id=475646
Latest Commit:		Version Fixed In:	6.2.0
Sentry Crash Report:
Attachments:	New crash information added by DrKonqi

Description duha.bugs 2024-07-31 19:52:31 UTC

Application: plasmashell (6.1.80)
 (Compiled from sources)
ApplicationNotResponding [ANR]: false
Qt Version: 6.9.0
Frameworks Version: 6.5.0
Operating System: Linux 6.10.2-arch1-1 x86_64
Windowing System: Wayland
Distribution: "Arch Linux"
DrKonqi: 6.1.80 [CoredumpBackend]

-- Information about the crash:
Steps to reproduce:

1. Make the enable wifi (or enable airplane mode)  tooltip stuck like described here: https://bugs.kde.org/show_bug.cgi?id=488912
2. Once the tooltip is stuck/persistent open the plasma-nm tray icon again.
3. Plasma shell is crashing

Note:
Can reproduce the stuck/persistend tooltip on plasma 6.1.3  compiled against qt6 6.7.2.1 BUT NOT the crash.

The crash can be reproduced every time.

-- Backtrace (Reduced):
#5  0x0000724fc803819f in QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::get (this=<optimized out>) at /home/duha/kde/src/qtbase/src/corelib/tools/qscopedpointer.h:112
[...]
#8  QWindow::mapToGlobal (this=0x0, pos=...) at /home/duha/kde/src/qtbase/src/gui/kernel/qwindow.cpp:2917
#9  0x0000724fc9605f5d in QQuickItem::mapToItem (this=this@entry=0x637f4c9a9c20, item=0x637f4abd94d0, point=...) at /home/duha/kde/src/qtdeclarative/src/quick/items/qquickitem.cpp:8778
#10 0x0000724fc1937a69 in QQuickPopupPositioner::reposition (this=0x637f4cafb7a0) at /home/duha/kde/src/qtdeclarative/src/quicktemplates/qquickpopuppositioner.cpp:153
#11 0x0000724fc960dca5 in operator() (listener=..., __closure=<optimized out>) at /home/duha/kde/src/qtdeclarative/src/quick/items/qquickitem.cpp:3906


Reported using DrKonqi

Comment 1 duha.bugs 2024-07-31 19:52:32 UTC

Created attachment 172156 [details]
New crash information added by DrKonqi

DrKonqi auto-attaching complete backtrace.

Comment 2 Nate Graham 2024-07-31 23:51:27 UTC

I don't see KDE code in the backtrace, and I notice you're using a compiled-from-source unreleased Qt version. It would appear that the issue described in Bug 475646 now causes a crash due to changes in Qt.

In a general sense, this crash should be reported to Qt. However in this specific case we know our code is at fault for causing Bug 475646, so maybe we should just fix that.

Comment 3 Nate Graham 2024-09-18 13:52:04 UTC

Bug 475646 has been fixed now, and with the fix applied, I can't reproduce the crash described here in the steps to reproduce.