Bug 463649

Summary:	System setttings crashed upon changing scaling
Product:	[Applications] systemsettings	Reporter:	Quinten Kock <quinten>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	crash	CC:	luca.bacci, nate, nicolas.fella
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	5.26.4
Target Milestone:	---
Platform:	Fedora RPMs
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	New crash information added by DrKonqi

Description Quinten Kock 2022-12-31 01:08:22 UTC

Application: systemsettings (5.26.4)

Qt Version: 5.15.7
Frameworks Version: 5.101.0
Operating System: Linux 6.0.15-300.fc37.x86_64 x86_64
Windowing System: Wayland
Distribution: Fedora Linux 37 (KDE Plasma)
DrKonqi: 5.26.4 [KCrashBackend]

-- Information about the crash:
I changed my scaling setting from 150% to 100%, hit apply, and then System Settings crashed. (It did however succesfully apply the setting).

The reporter is unsure if this crash is reproducible.

-- Backtrace:
Application: System Settings (systemsettings), signal: Aborted

[KCrash Handler]
#4  0x00007f2a268afe7c in __pthread_kill_implementation () from /lib64/libc.so.6
#5  0x00007f2a2685faa6 in raise () from /lib64/libc.so.6
#6  0x00007f2a268497fc in abort () from /lib64/libc.so.6
#7  0x00007f2a1109b349 in _iris_batch_flush.cold () from /usr/lib64/dri/iris_dri.so
#8  0x00007f2a11d42387 in iris_fence_flush () from /usr/lib64/dri/iris_dri.so
#9  0x00007f2a11160a64 in st_glFlush () from /usr/lib64/dri/iris_dri.so
#10 0x00007f2a21eeda1d in QtWaylandClient::QWaylandGLContext::swapBuffers(QPlatformSurface*) () from /usr/lib64/qt5/plugins/wayland-graphics-integration-client/libqt-plugin-wayland-egl.so
#11 0x00007f2a2780d23a in QPlatformBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, bool) () from /lib64/libQt5Gui.so.5
#12 0x00007f2a27dbc716 in QWidgetRepaintManager::flush(QWidget*, QRegion const&, QPlatformTextureList*) () from /lib64/libQt5Widgets.so.5
#13 0x00007f2a27dc0a1a in QWidgetRepaintManager::sync(QWidget*, QRegion const&) () from /lib64/libQt5Widgets.so.5
#14 0x00007f2a27e0e22c in QWidgetWindow::event(QEvent*) () from /lib64/libQt5Widgets.so.5
#15 0x00007f2a27daed12 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#16 0x00007f2a270a8278 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#17 0x00007f2a2756c1a5 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () from /lib64/libQt5Gui.so.5
#18 0x00007f2a2754a02c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Gui.so.5
#19 0x00007f2a2754a3b0 in QWindowSystemInterface::flushWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Gui.so.5
#20 0x00007f2a270d2ec4 in QObject::event(QEvent*) () from /lib64/libQt5Core.so.5
#21 0x00007f2a27daed12 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#22 0x00007f2a270a8278 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#23 0x00007f2a270ab5e4 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib64/libQt5Core.so.5
#24 0x00007f2a270f9897 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#25 0x00007f2a25919cbf in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#26 0x00007f2a2596f598 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#27 0x00007f2a25916f40 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#28 0x00007f2a270f938a in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#29 0x00007f2a270a6cca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#30 0x00007f29f41f9902 in KScreen::ConfigOperation::exec() () from /lib64/libKF5Screen.so.7
#31 0x00007f29f4250e2f in KCMKScreen::doSave(bool) () from /usr/lib64/qt5/plugins/plasma/kcms/systemsettings/kcm_kscreen.so
#32 0x00007f2a28391736 in KCModuleQml::save() () from /lib64/libKF5KCMUtils.so.5
#33 0x00007f2a28399827 in KCModuleProxy::save() () from /lib64/libKF5KCMUtils.so.5
#34 0x00007f2a28966065 in ModuleView::moduleSave(KCModuleProxy*) () from /lib64/libsystemsettingsview.so.3
#35 0x00007f2a2896883e in ModuleView::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /lib64/libsystemsettingsview.so.3
#36 0x00007f2a270dbdaf in void doActivate<false>(QObject*, int, void**) () from /lib64/libQt5Core.so.5
#37 0x00007f2a27ea31d6 in QAbstractButton::clicked(bool) () from /lib64/libQt5Widgets.so.5
#38 0x00007f2a27ea344e in QAbstractButtonPrivate::emitClicked() () from /lib64/libQt5Widgets.so.5
#39 0x00007f2a27ea508c in QAbstractButtonPrivate::click() () from /lib64/libQt5Widgets.so.5
#40 0x00007f2a27ea52ab in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /lib64/libQt5Widgets.so.5
#41 0x00007f2a27df1818 in QWidget::event(QEvent*) () from /lib64/libQt5Widgets.so.5
#42 0x00007f2a27daed12 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#43 0x00007f2a27db7382 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#44 0x00007f2a270a8278 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#45 0x00007f2a27db5482 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () from /lib64/libQt5Widgets.so.5
#46 0x00007f2a27e0ab7c in QWidgetWindow::handleMouseEvent(QMouseEvent*) () from /lib64/libQt5Widgets.so.5
#47 0x00007f2a27e0df40 in QWidgetWindow::event(QEvent*) () from /lib64/libQt5Widgets.so.5
#48 0x00007f2a27daed12 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#49 0x00007f2a270a8278 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#50 0x00007f2a2756ae7d in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /lib64/libQt5Gui.so.5
#51 0x00007f2a2754a02c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Gui.so.5
#52 0x00007f2a2455f3f4 in userEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5WaylandClient.so.5
#53 0x00007f2a25919cbf in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#54 0x00007f2a2596f598 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#55 0x00007f2a25916f40 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#56 0x00007f2a270f938a in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#57 0x00007f2a270a6cca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#58 0x00007f2a270aed92 in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#59 0x000055fd3adbe409 in main ()
[Inferior 1 (process 44328) detached]

Reported using DrKonqi

Comment 1 Nicolas Fella 2022-12-31 01:25:45 UTC

Looks same as https://bugs.kde.org/show_bug.cgi?id=450489

Comment 2 Quinten Kock 2023-01-01 02:00:38 UTC

(In reply to Nicolas Fella from comment #1)
> Looks same as https://bugs.kde.org/show_bug.cgi?id=450489

Not sure, because this was a systemsettings crash. Plasma itself continued to run as usual.

Comment 3 Nate Graham 2023-01-06 21:49:09 UTC

> #7  0x00007f2a1109b349 in _iris_batch_flush.cold () from /usr/lib64/dri/iris_dri.so
> #8  0x00007f2a11d42387 in iris_fence_flush () from /usr/lib64/dri/iris_dri.so
> #9  0x00007f2a11160a64 in st_glFlush () from /usr/lib64/dri/iris_dri.so
Crashing in the Intel graphics drivers. Please file a bug for the developers; see https://docs.mesa3d.org/bugs.html. Thanks!

Comment 4 Luca Bacci 2023-03-01 09:50:12 UTC

Created attachment 156861 [details]
New crash information added by DrKonqi

systemsettings (5.27.2) using Qt 5.15.8

I changed the scale of one of my two monitors and lcosed the window. A dialog showed asking me if I wanted to apply the changes and clicked "Yes", then it crashed

-- Backtrace (Reduced):
#4  0x00007fda9bf563a7 in KScreen::Config::clone() const () from /usr/lib/libKF5Screen.so.8
[...]
#8  0x00007fdac9d20818 in KCModuleProxy::save() () from /usr/lib/libKF5KCMUtils.so.5
#9  0x00007fdaca4eb9b6 in ModuleView::moduleSave(KCModuleProxy*) () from /usr/lib/libsystemsettingsview.so.3
[...]
#12 0x00007fdac985c727 in QAbstractButton::clicked(bool) () from /usr/lib/libQt5Widgets.so.5
[...]
#15 0x00007fdac9860670 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQt5Widgets.so.5

Comment 5 Nate Graham 2023-03-01 15:02:02 UTC

That's different Luca. Looks like Bug 461581.

Comment 6 Luca Bacci 2023-03-01 17:11:31 UTC

Ouch, yes!! I should have posted in BUG 461581 

I'll see if I can reproduce with a debug build of libkscreen and post there a new stacktrace

Thank you!
Luca