Bug 478916

Summary:	kcmshell6 crash when applying a different widget theme
Product:	[Plasma] kde-cli-tools	Reporter:	Enrico <enricobe>
Component:	general	Assignee:	Aleix Pol <aleixpol>
Status:	RESOLVED UPSTREAM
Severity:	crash	CC:	nate
Priority:	NOR	Keywords:	drkonqi, qt6
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Enrico 2023-12-23 06:55:47 UTC

Application: kcmshell6 (5.246.0)

Qt Version: 6.6.1
Frameworks Version: 5.246.0
Operating System: Linux 6.5.11-1 x86_64
Windowing System: Wayland
Distribution: KaOS (2023)
DrKonqi: 5.90.0 [KCrashBackend]

-- Information about the crash:
Hello,
I've installed the last KaOS Plasma 6 ISO. The welcome screen let me chose a different widget stile. The default one is kvantum, but if I click on "Breeze" and then apply the kcmshell6 crashes.

The reporter is unsure if this crash is reproducible.

-- Backtrace:
Application: kcmshell6 (kcmshell6), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f5588049299 in ??? () at /usr/lib/libKF6KCMUtils.so.6
#5  0x00007f558804b379 in KCMultiDialog::slotOkClicked() () at /usr/lib/libKF6KCMUtils.so.6
#6  0x00007f55863b2cc2 in ??? () at /usr/lib/libQt6Core.so.6
#7  0x00007f5587693272 in QAbstractButton::clicked(bool) () at /usr/lib/libQt6Widgets.so.6
#8  0x00007f558769349a in ??? () at /usr/lib/libQt6Widgets.so.6
#9  0x00007f55876949b8 in ??? () at /usr/lib/libQt6Widgets.so.6
#10 0x00007f5587694bc6 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt6Widgets.so.6
#11 0x00007f55875cd818 in QWidget::event(QEvent*) () at /usr/lib/libQt6Widgets.so.6
#12 0x00007f558757ac31 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt6Widgets.so.6
#13 0x00007f5587583bbd in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt6Widgets.so.6
#14 0x00007f5586357738 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt6Core.so.6
#15 0x00007f5587582574 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () at /usr/lib/libQt6Widgets.so.6
#16 0x00007f55875df3aa in ??? () at /usr/lib/libQt6Widgets.so.6
#17 0x00007f55875e1e30 in ??? () at /usr/lib/libQt6Widgets.so.6
#18 0x00007f558757ac31 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt6Widgets.so.6
#19 0x00007f5586357738 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt6Core.so.6
#20 0x00007f5586bbaab3 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/libQt6Gui.so.6
#21 0x00007f5586c1178c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt6Gui.so.6
#22 0x00007f55870938c0 in ??? () at /usr/lib/libQt6Gui.so.6
#23 0x00007f5584dd6817 in ??? () at /usr/lib/libglib-2.0.so.0
#24 0x00007f5584dd9547 in ??? () at /usr/lib/libglib-2.0.so.0
#25 0x00007f5584dd9b1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#26 0x00007f55865f206c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt6Core.so.6
#27 0x00007f5586362e33 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt6Core.so.6
#28 0x00007f558635f814 in QCoreApplication::exec() () at /usr/lib/libQt6Core.so.6
#29 0x0000000000407689 in ??? ()
#30 0x00007f558684d677 in __libc_start_call_main () at /lib/libc.so.6
#31 0x00007f558684d735 in __libc_start_main_impl () at /lib/libc.so.6
#32 0x00000000004085a1 in ??? ()
[Inferior 1 (process 2781) detached]

Reported using DrKonqi

Comment 1 Nate Graham 2024-01-11 17:38:36 UTC

Thank you for the bug report! Unfortunately I can't reproduce the crash myself on current git master, and the backtrace is incomplete and missing debug symbols for the following lines that we need to figure out exactly what's going wrong:

> #4  0x00007f5588049299 in ??? () at /usr/lib/libKF6KCMUtils.so.6

Could you please install debug symbols for the kcmutils library and attach a new symbolicated backtrace generated by using coredumpctl gdb in a terminal window? See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl for details about how to do this.

Thanks again!

Comment 2 Enrico 2024-01-11 18:52:11 UTC

I'm sorry but KaOS doesn't provide debug symbols for that package. More important: I can't reproduce it anymore. So it has been fixed in some other way :-)