Bug 415609

Summary:	System settings intermittently crashes when opening "Window Decorations" menu
Product:	[Applications] systemsettings	Reporter:	Emilio Cobos Álvarez (:emilio) <emilio>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED DUPLICATE
Severity:	crash	CC:	isma.af, jaakko.lipponen
Priority:	NOR	Keywords:	drkonqi
Version:	5.17.4
Target Milestone:	---
Platform:	Fedora RPMs
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	New crash information added by DrKonqi

Description Emilio Cobos Álvarez (:emilio) 2019-12-27 14:58:43 UTC

Application: systemsettings5 (5.17.4)

Qt Version: 5.12.5
Frameworks Version: 5.64.0
Operating System: Linux 5.4.5-300.fc31.x86_64 x86_64
Distribution: "Fedora release 31 (Thirty One)"

-- Information about the crash:
- What I was doing when the application crashed: Just exploring the KDE settings, I clicked on "Application Style" > "Window Decorations", and it crashed two times in a row.

Note that it opened the third time though (while I was filing this very text).

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fafdb739800 (LWP 3864))]

Thread 8 (Thread 0x7fafa7fff700 (LWP 3919)):
#0  0x00007fafdf95aa6f in poll () at /lib64/libc.so.6
#1  0x00007fafddb9c80e in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fafddb9c943 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fafdfee0da3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fafdfe8acfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fafdfce33a5 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fafdefc4119 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fafdfce44f6 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fafde4ed4e2 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fafdf965693 in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7fafafd5b700 (LWP 3917)):
#0  0x00007fafddb9a98d in g_source_iter_next () at /lib64/libglib-2.0.so.0
#1  0x00007fafddb9bcc3 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007fafddb9c73b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007fafddb9c943 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007fafdfee0da3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fafdfe8acfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fafdfce33a5 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007fafdefc4119 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007fafdfce44f6 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007fafde4ed4e2 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fafdf965693 in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7fafbb487700 (LWP 3870)):
#0  0x00007fafdf95aa6f in poll () at /lib64/libc.so.6
#1  0x00007fafddb9c80e in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fafddb9c943 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fafdfee0da3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fafdfe8acfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fafdfce33a5 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fafdefc4119 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fafdfce44f6 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fafde4ed4e2 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fafdf965693 in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fafc5510700 (LWP 3869)):
#0  0x00007fafddb9beb4 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#1  0x00007fafddb9c73b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007fafddb9c943 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007fafdfee0da3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007fafdfe8acfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007fafdfce33a5 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007fafdefc4119 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007fafdfce44f6 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007fafde4ed4e2 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fafdf965693 in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fafc67e7700 (LWP 3867)):
#0  0x00007fafde4f3d45 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fafc768119b in util_queue_thread_func () at /usr/lib64/dri/i965_dri.so
#2  0x00007fafc7680dab in impl_thrd_routine () at /usr/lib64/dri/i965_dri.so
#3  0x00007fafde4ed4e2 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fafdf965693 in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fafcd460700 (LWP 3866)):
#0  0x00007fafdf95644c in read () at /lib64/libc.so.6
#1  0x00007fafddbe453f in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007fafddb9c357 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007fafddb9c7b2 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007fafddb9c943 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007fafdfee0da3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007fafdfe8acfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007fafdfce33a5 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007fafe015cf4a in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#9  0x00007fafdfce44f6 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#10 0x00007fafde4ed4e2 in start_thread () at /lib64/libpthread.so.0
#11 0x00007fafdf965693 in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fafce409700 (LWP 3865)):
#0  0x00007fafdf95aa6f in poll () at /lib64/libc.so.6
#1  0x00007fafde4ac38a in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007fafde4adfea in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007fafce605ac8 in QXcbEventQueue::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007fafdfce44f6 in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007fafde4ed4e2 in start_thread () at /lib64/libpthread.so.0
#6  0x00007fafdf965693 in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fafdb739800 (LWP 3864)):
[KCrash Handler]
#6  0x00007fafdfd596ba in QtSharedPointer::ExternalRefCountData::getAndRef(QObject const*) () at /lib64/libQt5Core.so.5
#7  0x00007fafdef8ccf8 in QQmlListReferencePrivate::init(QQmlListProperty<QObject> const&, int, QQmlEngine*) () at /lib64/libQt5Qml.so.5
#8  0x00007fafdef9b065 in QV4::QmlListWrapper::toVariant() const () at /lib64/libQt5Qml.so.5
#9  0x00007fafdeedd604 in toVariant(QV4::ExecutionEngine*, QV4::Value const&, int, bool, QSet<QV4::Heap::Object*>*) () at /lib64/libQt5Qml.so.5
#10 0x00007fafdeedda69 in QV4::ExecutionEngine::toVariant(QV4::Value const&, int, bool) () at /lib64/libQt5Qml.so.5
#11 0x00007fafdef95b25 in QQmlBinding::slowWrite(QQmlPropertyData const&, QQmlPropertyData const&, QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>) () at /lib64/libQt5Qml.so.5
#12 0x00007fafdef978f3 in GenericBinding<2>::write(QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>) () at /lib64/libQt5Qml.so.5
#13 0x00007fafdef98540 in QQmlNonbindingBinding::doUpdate(QQmlJavaScriptExpression::DeleteWatcher const&, QFlags<QQmlPropertyData::WriteFlag>, QV4::Scope&) () at /lib64/libQt5Qml.so.5
#14 0x00007fafdef94c94 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /lib64/libQt5Qml.so.5
#15 0x00007fafdefa3826 in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#16 0x00007fafdef22f81 in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () at /lib64/libQt5Qml.so.5
#17 0x00007fafdef23092 in QQmlComponentPrivate::completeCreate() () at /lib64/libQt5Qml.so.5
#18 0x00007fafdef22e98 in QQmlComponent::create(QQmlContext*) () at /lib64/libQt5Qml.so.5
#19 0x00007fafae71ba8b in Aurorae::Decoration::init() () at /usr/lib64/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#20 0x00007fafaee0cf8d in KDecoration2::Preview::PreviewItem::componentComplete() () at /usr/lib64/qt5/qml/org/kde/kwin/private/kdecoration/libkdecorationprivatedeclarative.so
#21 0x00007fafdefa3a0c in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#22 0x00007fafdef281ba in QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#23 0x00007fafdef28723 in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /lib64/libQt5Qml.so.5
#24 0x00007fafdf0111df in QQmlDelegateModelPrivate::object(QQmlListCompositor::Group, int, QQmlIncubator::IncubationMode) () at /lib64/libQt5Qml.so.5
#25 0x00007fafdf011388 in QQmlDelegateModel::object(int, QQmlIncubator::IncubationMode) () at /lib64/libQt5Qml.so.5
#26 0x00007fafdf472e46 in QQuickItemViewPrivate::createItem(int, QQmlIncubator::IncubationMode) () at /lib64/libQt5Quick.so.5
#27 0x00007fafdf46680d in QQuickGridViewPrivate::addVisibleItems(double, double, double, double, bool) () at /lib64/libQt5Quick.so.5
#28 0x00007fafdf473d64 in QQuickItemViewPrivate::refill(double, double) () at /lib64/libQt5Quick.so.5
#29 0x00007fafdf476992 in QQuickItemViewPrivate::regenerate(bool) () at /lib64/libQt5Quick.so.5
#30 0x00007fafdf476b6c in QQuickItemView::modelUpdated(QQmlChangeSet const&, bool) () at /lib64/libQt5Quick.so.5
#31 0x00007fafdf477fda in QQuickItemView::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libQt5Quick.so.5
#32 0x00007fafdfeb5ecb in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#33 0x00007fafdefea09a in QQmlInstanceModel::modelUpdated(QQmlChangeSet const&, bool) () at /lib64/libQt5Qml.so.5
#34 0x00007fafdf0067fc in QQmlDelegateModelPrivate::emitModelUpdated(QQmlChangeSet const&, bool) () at /lib64/libQt5Qml.so.5
#35 0x00007fafdf00deb2 in QQmlDelegateModelGroupPrivate::emitModelUpdated(bool) () at /lib64/libQt5Qml.so.5
#36 0x00007fafdf00e028 in QQmlDelegateModelPrivate::emitChanges() () at /lib64/libQt5Qml.so.5
#37 0x00007fafdf0176fa in QQmlDelegateModel::_q_modelReset() () at /lib64/libQt5Qml.so.5
#38 0x00007fafdf017c80 in QQmlDelegateModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libQt5Qml.so.5
#39 0x00007fafdf018013 in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /lib64/libQt5Qml.so.5
#40 0x00007fafdfeb5f8c in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#41 0x00007fafdfe42f3e in QAbstractItemModel::modelReset(QAbstractItemModel::QPrivateSignal) () at /lib64/libQt5Core.so.5
#42 0x00007fafdfe6a557 in QSortFilterProxyModelPrivate::_q_sourceReset() () at /lib64/libQt5Core.so.5
#43 0x00007fafdfe6ea50 in QSortFilterProxyModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libQt5Core.so.5
#44 0x00007fafdfeb5ecb in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#45 0x00007fafdfe42f3e in QAbstractItemModel::modelReset(QAbstractItemModel::QPrivateSignal) () at /lib64/libQt5Core.so.5
#46 0x00007fafb9dfd748 in KDecoration2::Configuration::DecorationsModel::init() () at /usr/lib64/qt5/plugins/kcms/kcm_kwindecoration.so
#47 0x00007fafdfeb6d4a in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#48 0x00007fafe088ead6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#49 0x00007fafe0898150 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#50 0x00007fafdfe8bdf8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#51 0x00007fafdfe8ed9b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#52 0x00007fafdfee0ff7 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#53 0x00007fafddb9c510 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#54 0x00007fafddb9c8a0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#55 0x00007fafddb9c943 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#56 0x00007fafdfee0d85 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#57 0x00007fafdfe8acfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#58 0x00007fafdfe92a26 in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#59 0x0000560abd9b486e in main ()
[Inferior 1 (process 3864) detached]

Possible duplicates by query: bug 415595, bug 415589, bug 415511, bug 415449, bug 415435.

Reported using DrKonqi

Comment 1 Ismael Asensio 2019-12-27 20:09:45 UTC


*** This bug has been marked as a duplicate of bug 411166 ***

Comment 2 jaakko.lipponen 2020-01-11 19:42:37 UTC

Created attachment 125040 [details]
New crash information added by DrKonqi

systemsettings5 (5.17.4) using Qt 5.13.2

- What I was doing when the application crashed:

Opening the window decorations settings menu, then crashed, this happens every once in a while

-- Backtrace (Reduced):
#6  0x00007f1b711028ca in QtSharedPointer::ExternalRefCountData::getAndRef(QObject const*) () from /lib64/libQt5Core.so.5
#7  0x00007f1b70329c28 in QQmlListReferencePrivate::init(QQmlListProperty<QObject> const&, int, QQmlEngine*) () from /lib64/libQt5Qml.so.5
#8  0x00007f1b70337e25 in QV4::QmlListWrapper::toVariant() const () from /lib64/libQt5Qml.so.5
#9  0x00007f1b7027abe4 in toVariant(QV4::ExecutionEngine*, QV4::Value const&, int, bool, QSet<QV4::Heap::Object*>*) () from /lib64/libQt5Qml.so.5
#10 0x00007f1b7027b049 in QV4::ExecutionEngine::toVariant(QV4::Value const&, int, bool) () from /lib64/libQt5Qml.so.5

Comment 3 Ismael Asensio 2020-01-12 01:57:19 UTC

Hi! This bug is fixed on Plasma 5.17.5, which will be shipped with Fedora 32.
Please, try again when you get the next version.