Bug 502388

Summary:	Crash in KConfigGroup::writeEntry() while trying to write the "thickness" key
Product:	[Plasma] plasmashell	Reporter:	Tasbih <ctasbihas>
Component:	Panel	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	REPORTED ---
Severity:	crash	CC:	kdedev, nate, niccolo.venerandi
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	6.3.4
Target Milestone:	1.0
Platform:	Compiled Sources
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	New crash information added by DrKonqi

Description Tasbih 2025-04-04 03:23:32 UTC

Application: plasmashell (6.3.4)
 (Compiled from sources)
ApplicationNotResponding [ANR]: false
Qt Version: 6.8.3
Frameworks Version: 6.12.0
Operating System: Linux 6.13.8-arch1-1 x86_64
Windowing System: X11
Distribution: Arch Linux
DrKonqi: 6.3.4 [CoredumpBackend]

-- Information about the crash:
Plasma Shell crashed unexpectedly while running on Arch Linux. The crash log shows multiple warnings related to missing or deleted cache files, including:

QML cache files missing (plasmashell/qmlcache/*.qmlc (deleted))

Plasma theme cache missing (plasma_theme_Otto.kcache (deleted))

Memory-mapped files deleted (/memfd:xshmfence, /memfd:JITCode:QtQml, /memfd:pulseaudio)

Intel GPU-related issue (anon_inode:i915.gem)

The issue seems to occur during Plasma's UI reload process, possibly due to a recent update or cache corruption.

The crash can be reproduced every time.

-- Backtrace (Reduced):
#5  0x00007be29f1fec98 in KConfigGroup::config (this=this@entry=0x7fff17593e70) at /usr/include/qt6/QtCore/qshareddata.h:136
#6  0x00007be29f200435 in KConfigGroup::writeEntry (this=this@entry=0x7fff17593e70, key=key@entry=0x5820c7860655 "thickness", value=..., flags=..., flags@entry=...) at /usr/src/debug/kconfig/kconfig-6.12.0/src/core/kconfiggroup.cpp:831
#7  0x00007be29f200de2 in KConfigGroup::writeEntry (this=this@entry=0x7fff17593e70, key=key@entry=0x5820c7860655 "thickness", value=..., flags=flags@entry=...) at /usr/src/debug/kconfig/kconfig-6.12.0/src/core/kconfiggroup.cpp:1011
#8  0x00005820c77e7a26 in KConfigGroup::writeEntry<int> (this=0x7fff17593e70, key=0x5820c7860655 "thickness", value=@0x7fff17593e6c: 60, pFlags=...) at /usr/include/KF6/KConfigCore/kconfiggroup.h:794
#9  PanelView::setThickness (this=0x5820fc6f0160, value=<optimized out>) at /usr/src/debug/plasma-workspace/plasma-workspace-6.3.4/shell/panelview.cpp:326


Reported using DrKonqi

Comment 1 Tasbih 2025-04-04 03:24:39 UTC

Created attachment 179987 [details]
New crash information added by DrKonqi

DrKonqi auto-attaching complete backtrace.

Comment 2 Nate Graham 2025-04-04 14:38:40 UTC

It's failing to write the "thickness" key. Seems like your system is in a somewhat inconsistent state. Still, we shouldn't crash here.

Comment 3 TraceyC 2025-09-23 16:19:58 UTC

Searchable trace

[KCrash Handler]
#5  0x00007be29f1fec98 in KConfigGroup::config (this=this@entry=0x7fff17593e70) at /usr/include/qt6/QtCore/qshareddata.h:136
#6  0x00007be29f200435 in KConfigGroup::writeEntry (this=this@entry=0x7fff17593e70, key=key@entry=0x5820c7860655 "thickness", value=..., flags=..., flags@entry=...) at /usr/src/debug/kconfig/kconfig-6.12.0/src/core/kconfiggroup.cpp:831
#7  0x00007be29f200de2 in KConfigGroup::writeEntry (this=this@entry=0x7fff17593e70, key=key@entry=0x5820c7860655 "thickness", value=..., flags=flags@entry=...) at /usr/src/debug/kconfig/kconfig-6.12.0/src/core/kconfiggroup.cpp:1011
#8  0x00005820c77e7a26 in KConfigGroup::writeEntry<int> (this=0x7fff17593e70, key=0x5820c7860655 "thickness", value=@0x7fff17593e6c: 60, pFlags=...) at /usr/include/KF6/KConfigCore/kconfiggroup.h:794
#9  PanelView::setThickness (this=0x5820fc6f0160, value=<optimized out>) at /usr/src/debug/plasma-workspace/plasma-workspace-6.3.4/shell/panelview.cpp:326
#10 0x00005820c77ee1b9 in PanelView::qt_metacall (this=0x5820fc6f0160, _c=QMetaObject::WriteProperty, _id=2, _a=0x7fff175940c0) at /usr/src/debug/plasma-workspace/build/shell/plasmashell_autogen/include/moc_panelview.cpp:751
#11 0x00007be29e5dab1f in QV4::QObjectWrapper::setProperty (engine=engine@entry=0x5820faea2a30, object=object@entry=0x5820fc6f0160, property=0x5820fb66e100, value=...) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/qml/qqmlpropertydata_p.h:256
#12 0x00007be29e5dc01e in QV4::QObjectWrapper::setQmlProperty (engine=engine@entry=0x5820faea2a30, qmlContext=..., object=0x5820fc6f0160, name=name@entry=0x7be28c1bd580, flags=..., flags@entry=..., value=...) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4qobjectwrapper.cpp:555
#13 0x00007be29e5dc1ab in QV4::QObjectWrapper::virtualPut (m=0x7be28c1bd538, id=..., value=..., receiver=0x7be28c1bd538) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4qobjectwrapper.cpp:953
#14 0x00007be29e5bf851 in QV4::Object::put (this=<optimized out>, id=..., v=..., receiver=<optimized out>, this=<optimized out>, id=..., v=..., receiver=<optimized out>) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4object_p.h:41
#15 QV4::Object::virtualResolveLookupSetter (object=0x7be28c1bd538, engine=0x5820faea2a30, lookup=0x5820fcc56060, value=...) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4object.cpp:825
#16 0x00007be29e64dda4 in QV4::Moth::VME::interpret (frame=0x7fff17594790, engine=0x5820faea2a30, code=0x7be253b1528c "\032\b\006\324\026\006\002") at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4vme_moth.cpp:321
#17 0x00007be29e656943 in QV4::Moth::VME::exec (frame=<optimized out>, engine=<optimized out>) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4vme_moth.cpp:487
#18 0x00007be29e58fda4 in QV4::doCall (self=<optimized out>, thisObject=<optimized out>, argv=<optimized out>, argc=<optimized out>, context=<optimized out>) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4function.cpp:52
#19 0x00007be29e595428 in QV4::Function::call (this=this@entry=0x5820fd685990, thisObject=<optimized out>, argv=argv@entry=0x7be28c1bd4f8, argc=argc@entry=0, context=context@entry=0x7be264641308) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4function.cpp:77
#20 0x00007be29e595719 in operator() (__closure=<synthetic pointer>, thisObject=<optimized out>, argv=0x7be28c1bd4f8, argc=0) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4function.cpp:28
#21 QV4::convertAndCall<QV4::Function::call(QObject*, void**, const QMetaType*, int, QV4::ExecutionContext*)::<lambda(const QV4::Value*, const QV4::Value*, int)> > (engine=<optimized out>, thisObject=0x5820fadda070, a=0x7fff17594a70, types=0x7fff17594a60, argc=0, call=...) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4jscall_p.h:199
#22 QV4::Function::call (this=0x5820fd685990, thisObject=0x5820fadda070, a=0x7fff17594a70, types=0x7fff17594a60, argc=0, context=0x7be264641308) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4function.cpp:25
#23 0x00007be29e6e6ea4 in QQmlJavaScriptExpression::evaluate (this=<optimized out>, a=<optimized out>, types=<optimized out>, argc=<optimized out>) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/qml/qqmljavascriptexpression_p.h:248
#24 0x00007be29e687e63 in QQmlBoundSignalExpression::evaluate (this=0x5820faf78420, a=a@entry=0x0) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/qml/qqmlboundsignal.cpp:200
#25 0x00007be29e68d6ef in QQmlBoundSignal_callback (e=0x5820faedae10, a=0x0) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/qml/ftw/qqmlrefcount_p.h:73
#26 QQmlBoundSignal_callback (e=0x5820faedae10, a=0x0) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/qml/qqmlboundsignal.cpp:294
#27 0x00007be29e70a55c in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=0x0) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/qml/qqmlnotifier.cpp:70
#28 0x00007be29d3b3cb2 in doActivate<false> (sender=0x5820fadda070, signal_index=71, argv=0x0) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:4013
#29 0x00007be29552b429 in QQuickSpinBox::valueModified (this=0x5820fadda070) at /usr/src/debug/qt6-declarative/build/src/quicktemplates/QuickTemplates2_autogen/include/moc_qquickspinbox_p.cpp:525
#30 QQuickSpinBoxPrivate::handleRelease (this=this@entry=0x5820fd7b78f0, point=..., timestamp=timestamp@entry=99806) at /usr/src/debug/qt6-declarative/qtdeclarative/src/quicktemplates/qquickspinbox.cpp:380
#31 0x00007be2954cfde0 in QQuickControl::mouseReleaseEvent (this=<optimized out>, event=0x7fff17597250) at /usr/src/debug/qt6-declarative/qtdeclarative/src/quicktemplates/qquickcontrol.cpp:2030
#32 0x00007be29eba4005 in QQuickItemPrivate::deliverPointerEvent (this=this@entry=0x5820fd7b78f0, event=event@entry=0x7fff17597250) at /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/items/qquickitem.cpp:5645
#33 0x00007be29eba425b in QQuickItem::event (this=0x5820fadda070, ev=0x7fff17597250) at /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/items/qquickitem.cpp:9092
#34 0x00007be29f4ff04a in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x5820fadda070, e=0x7fff17597250) at /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:3296
#35 0x00007be29d356c60 in QCoreApplication::notifyInternal2 (receiver=0x5820fadda070, event=0x7fff17597250) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1177
#36 0x00007be29d356cad in QCoreApplication::sendEvent (receiver=<optimized out>, event=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1617
#37 0x00007be29ed67aa0 in QQuickDeliveryAgentPrivate::deliverMatchingPointsToItem (this=this@entry=0x5820fd00b630, item=item@entry=0x5820fadda070, isGrabber=isGrabber@entry=true, pointerEvent=pointerEvent@entry=0x7fff17597250, handlersOnly=handlersOnly@entry=false) at /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:2408
#38 0x00007be29ed68152 in QQuickDeliveryAgentPrivate::deliverUpdatedPoints (this=this@entry=0x5820fd00b630, event=event@entry=0x7fff17597250) at /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:2186
#39 0x00007be29ed6a0f3 in QQuickDeliveryAgentPrivate::deliverPointerEvent (this=this@entry=0x5820fd00b630, event=event@entry=0x7fff17597250) at /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:2026
#40 0x00007be29ed6b1ed in QQuickDeliveryAgentPrivate::handleMouseEvent (this=this@entry=0x5820fd00b630, event=event@entry=0x7fff17597250) at /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:1783
#41 0x00007be29ed6b993 in QQuickDeliveryAgent::event (this=<optimized out>, ev=0x7fff17597250) at /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:823
#42 0x00007be29ec5ec28 in QQuickWindow::event (this=0x5820fc8ab940, event=<optimized out>) at /usr/src/debug/qt6-declarative/qtdeclarative/src/quick/items/qquickwindow.cpp:1552
#43 0x00007be29f4ff04a in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x5820fc8ab940, e=0x7fff17597250) at /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:3296
#44 0x00007be29d356c60 in QCoreApplication::notifyInternal2 (receiver=0x5820fc8ab940, event=0x7fff17597250) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1177
#45 0x00007be29d356cbd in QCoreApplication::sendSpontaneousEvent (receiver=<optimized out>, event=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1631
#46 0x00007be29db875cb in QGuiApplicationPrivate::processMouseEvent (e=0x7be25ca4e130) at /usr/src/debug/qt6-base/qtbase/src/gui/kernel/qguiapplication.cpp:2461
#47 0x00007be29dc018e4 in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...) at /usr/src/debug/qt6-base/qtbase/src/gui/kernel/qwindowsysteminterface.cpp:1113
#48 0x00007be2969afc87 in xcbSourceDispatch (source=source@entry=0x5820faa09660) at /usr/src/debug/qt6-base/qtbase/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:57
#49 0x00007be29be721e4 in g_main_dispatch (context=0x7be290000f00) at ../glib/glib/gmain.c:3398
#50 0x00007be29bed5e97 in g_main_context_dispatch_unlocked (context=0x7be290000f00) at ../glib/glib/gmain.c:4249
#51 g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x7be290000f00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4314
#52 0x00007be29be71615 in g_main_context_iteration (context=0x7be290000f00, may_block=1) at ../glib/glib/gmain.c:4379
#53 0x00007be29d5c531d in QEventDispatcherGlib::processEvents (this=0x5820fa9e4f10, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#54 0x00007be29d361826 in QEventLoop::processEvents (this=0x7fff175976d0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:103
#55 QEventLoop::exec (this=0x7fff175976d0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:185
#56 0x00007be29d35a356 in QCoreApplication::exec () at /usr/src/debug/qt6-base/qtbase/src/corelib/global/qflags.h:74
#57 0x00007be29f4faf1a in QApplication::exec () at /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:2564
#58 0x00005820c77d01cb in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/plasma-workspace/plasma-workspace-6.3.4/shell/main.cpp:191