Application: kalendar (23.04.0)

Qt Version: 5.15.9
Frameworks Version: 5.105.0
Operating System: Linux 6.2.12-arch1-1 x86_64
Windowing System: X11
Distribution: Arch Linux
DrKonqi: 5.27.4 [KCrashBackend]

-- Information about the crash:
Creating a new all-day event in Kalendar, saving it, reopening it, and saving it again causes Kalendar to crash.
I am using a calendar from my self-hosted Nextcloud instance.

The crash can be reproduced every time.

-- Backtrace:
Application: Kalendar (kalendar), signal: Segmentation fault
Content of s_kcrashErrorMessage: std::unique_ptr<char []> = {get() = <optimized out>}
[KCrash Handler]
#6  0x00007fdf9a1a1250 in std::__atomic_base<int>::operator--() (this=0x0, this=<optimized out>) at /usr/include/c++/12.2.1/bits/atomic_base.h:393
#7  QAtomicOps<int>::deref<int>(std::atomic<int>&) (_q_value=<error reading variable: Cannot access memory at address 0x0>, _q_value=<optimized out>) at ../../include/QtCore/../../src/corelib/thread/qatomic_cxx11.h:289
#8  QBasicAtomicInteger<int>::deref() (this=0x0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:119
#9  QDateTime::Data::operator=(QDateTime::Data const&) (other=..., this=0x55b870345228) at time/qdatetime.cpp:3411
#10 QDateTime::operator=(QDateTime const&) (this=this@entry=0x55b870345228, other=...) at time/qdatetime.cpp:3791
#11 0x000055b867c4886e in IncidenceOccurrenceModel::Occurrence::operator=(IncidenceOccurrenceModel::Occurrence const&) (this=0x55b870345228) at /usr/src/debug/kalendar/kalendar-23.04.0/src/models/incidenceoccurrencemodel.h:89
#12 QVector<IncidenceOccurrenceModel::Occurrence>::replace(int, IncidenceOccurrenceModel::Occurrence const&) (t=..., i=<optimized out>, this=0x55b869868660) at /usr/include/qt/QtCore/qvector.h:491
#13 IncidenceOccurrenceModel::slotSourceDataChanged(QModelIndex const&, QModelIndex const&) (this=0x55b8698685f0, upperLeft=..., bottomRight=<optimized out>) at /usr/src/debug/kalendar/kalendar-23.04.0/src/models/incidenceoccurrencemodel.cpp:227
#14 0x00007fdf9a2beb41 in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7fff209f6350, r=<optimized out>, this=0x55b86986c6d0, this=<optimized out>, r=<optimized out>, a=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#15 doActivate<false>(QObject*, int, void**) (sender=0x55b868395500, signal_index=3, argv=0x7fff209f6350) at kernel/qobject.cpp:3923
#16 0x00007fdf9a246c41 in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) (this=<optimized out>, _t1=<optimized out>, _t2=<optimized out>, _t3=<optimized out>) at .moc/moc_qabstractitemmodel.cpp:557
#17 0x00007fdf9a26d316 in QSortFilterProxyModelPrivate::_q_sourceDataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) (this=0x55b8683696a0, source_top_left=<optimized out>, source_bottom_right=<optimized out>, roles=...) at itemmodels/qsortfilterproxymodel.cpp:1539
#18 0x00007fdf9a2becf0 in doActivate<false>(QObject*, int, void**) (sender=0x55b868388a60, signal_index=3, argv=0x7fff209f6640) at kernel/qobject.cpp:3935
#19 0x00007fdf9a246c41 in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) (this=<optimized out>, _t1=<optimized out>, _t2=<optimized out>, _t3=<optimized out>) at .moc/moc_qabstractitemmodel.cpp:557
#20 0x00007fdf9a26d316 in QSortFilterProxyModelPrivate::_q_sourceDataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) (this=0x55b86838a7a0, source_top_left=<optimized out>, source_bottom_right=<optimized out>, roles=...) at itemmodels/qsortfilterproxymodel.cpp:1539
#21 0x00007fdf9a2becf0 in doActivate<false>(QObject*, int, void**) (sender=0x55b868388f60, signal_index=3, argv=0x7fff209f6930) at kernel/qobject.cpp:3935
#22 0x00007fdf9a246c41 in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) (this=<optimized out>, _t1=<optimized out>, _t2=<optimized out>, _t3=<optimized out>) at .moc/moc_qabstractitemmodel.cpp:557
#23 0x00007fdf9a26d316 in QSortFilterProxyModelPrivate::_q_sourceDataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) (this=0x55b868389920, source_top_left=<optimized out>, source_bottom_right=<optimized out>, roles=...) at itemmodels/qsortfilterproxymodel.cpp:1539
#24 0x00007fdf9a2becf0 in doActivate<false>(QObject*, int, void**) (sender=0x55b8683855e0, signal_index=3, argv=0x7fff209f6c20) at kernel/qobject.cpp:3935
#25 0x00007fdf9a246c41 in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) (this=<optimized out>, _t1=<optimized out>, _t2=<optimized out>, _t3=<optimized out>) at .moc/moc_qabstractitemmodel.cpp:557
#26 0x00007fdf9c58969b in KSelectionProxyModelPrivate::sourceDataChanged(QModelIndex const&, QModelIndex const&) (this=0x55b8683888b0, topLeft=..., bottomRight=...) at /usr/src/debug/kitemmodels/kitemmodels-5.105.0/src/core/kselectionproxymodel.cpp:734
#27 0x00007fdf9a2beb41 in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7fff209f6e80, r=<optimized out>, this=0x55b8683893b0, this=<optimized out>, r=<optimized out>, a=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#28 doActivate<false>(QObject*, int, void**) (sender=0x55b8683f4e60, signal_index=3, argv=0x7fff209f6e80) at kernel/qobject.cpp:3923
#29 0x00007fdf9a246c41 in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) (this=this@entry=0x55b8683f4e60, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:557
#30 0x00007fdf9c745abc in Akonadi::EntityTreeModelPrivate::dataChanged(QModelIndex const&, QModelIndex const&) [clone .isra.0] (top=..., bottom=<optimized out>, this=<optimized out>) at /usr/src/debug/akonadi/akonadi-23.04.0/src/core/models/entitytreemodel_p.cpp:1618
#31 0x00007fdf9c72752b in Akonadi::EntityTreeModelPrivate::monitoredItemChanged(Akonadi::Item const&, QSet<QByteArray> const&) (item=..., this=0x55b8683b6ac0) at /usr/src/debug/akonadi/akonadi-23.04.0/src/core/models/entitytreemodel_p.cpp:1117
#32 Akonadi::EntityTreeModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /usr/src/debug/akonadi/build/src/core/KPim5AkonadiCore_autogen/include/moc_entitytreemodel.cpp:227
#33 0x00007fdf9a2becf0 in doActivate<false>(QObject*, int, void**) (sender=0x55b8683b2790, signal_index=3, argv=0x7fff209f7120) at kernel/qobject.cpp:3935
#34 0x00007fdf9c6a735c in Akonadi::Monitor::itemChanged(Akonadi::Item const&, QSet<QByteArray> const&) (this=<optimized out>, _t1=<optimized out>, _t2=<optimized out>) at /usr/src/debug/akonadi/build/src/core/KPim5AkonadiCore_autogen/include/moc_monitor.cpp:864
#35 0x00007fdf9c6bbc21 in Akonadi::MonitorPrivate::emitToListeners<void (Akonadi::Monitor::*)(Akonadi::Item const&, QSet<QByteArray> const&), Akonadi::Item, QSet<QByteArray> >(void (Akonadi::Monitor::*)(Akonadi::Item const&, QSet<QByteArray> const&), Akonadi::Item, QSet<QByteArray>) (signal=<optimized out>, this=0x55b8683b2810) at /usr/src/debug/akonadi/akonadi-23.04.0/src/core/monitor_p.h:395
#36 Akonadi::MonitorPrivate::emitItemsNotification(Akonadi::Protocol::ItemChangeNotification const&, QVector<Akonadi::Item> const&, Akonadi::Collection const&, Akonadi::Collection const&) (this=0x55b8683b2810, msg=<optimized out>, items=..., collection=<optimized out>, collectionDest=<optimized out>) at /usr/src/debug/akonadi/akonadi-23.04.0/src/core/monitor_p.cpp:1056
#37 0x00007fdf9c6b62f4 in Akonadi::MonitorPrivate::emitNotification(QSharedPointer<Akonadi::Protocol::ChangeNotification> const&) (this=0x55b8683b2810, msg=<optimized out>) at /usr/src/debug/akonadi/akonadi-23.04.0/src/core/monitor_p.cpp:544
#38 0x00007fdf9c6b5425 in Akonadi::MonitorPrivate::flushPipeline() (this=this@entry=0x55b8683b2810) at /usr/src/debug/akonadi/akonadi-23.04.0/src/core/monitor_p.cpp:969
#39 0x00007fdf9c6b5dde in Akonadi::MonitorPrivate::dataAvailable() (this=0x55b8683b2810) at /usr/src/debug/akonadi/akonadi-23.04.0/src/core/monitor_p.cpp:978
#40 0x00007fdf9a2beb41 in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7fff209f7410, r=<optimized out>, this=0x55b868395f60, this=<optimized out>, r=<optimized out>, a=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#41 doActivate<false>(QObject*, int, void**) (sender=0x7fdf8c00cd10, signal_index=3, argv=0x7fff209f7410) at kernel/qobject.cpp:3923
#42 0x00007fdf9a2becf0 in doActivate<false>(QObject*, int, void**) (sender=0x55b869a372e0, signal_index=6, argv=0x7fff209f7540) at kernel/qobject.cpp:3935
#43 0x00007fdf9b6e67da in KJob::result(KJob*, KJob::QPrivateSignal) (this=this@entry=0x55b869a372e0, _t1=<optimized out>, _t1@entry=0x55b869a372e0, _t2=...) at /usr/src/debug/kcoreaddons/build/src/lib/KF5CoreAddons_autogen/include/moc_kjob.cpp:633
#44 0x00007fdf9b6ec52c in KJob::finishJob(bool) (this=0x55b869a372e0, emitResult=<optimized out>) at /usr/src/debug/kcoreaddons/kcoreaddons-5.105.0/src/lib/jobs/kjob.cpp:98
#45 0x00007fdf9a2b1c80 in QObject::event(QEvent*) (this=0x55b869a372e0, e=0x55b8705668b0) at kernel/qobject.cpp:1347
#46 0x00007fdf9af78b5c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0x55b869a372e0, e=0x55b8705668b0) at kernel/qapplication.cpp:3640
#47 0x00007fdf9a28e028 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55b869a372e0, event=0x55b8705668b0) at kernel/qcoreapplication.cpp:1064
#48 0x00007fdf9a28e093 in QCoreApplication::sendEvent(QObject*, QEvent*) (receiver=<optimized out>, event=<optimized out>) at kernel/qcoreapplication.cpp:1462
#49 0x00007fdf9a28eb33 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=0x0, event_type=0, data=0x55b867f44820) at kernel/qcoreapplication.cpp:1821
#50 0x00007fdf9a2d4f58 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x55b86800e650) at kernel/qeventdispatcher_glib.cpp:277
#51 0x00007fdf97f0f53b in g_main_dispatch (context=0x7fdf8c000ee0) at ../glib/glib/gmain.c:3460
#52 g_main_context_dispatch (context=0x7fdf8c000ee0) at ../glib/glib/gmain.c:4200
#53 0x00007fdf97f6c219 in g_main_context_iterate.constprop.0 (context=0x7fdf8c000ee0, block=1, dispatch=1, self=<optimized out>) at ../glib/glib/gmain.c:4276
#54 0x00007fdf97f0e1a2 in g_main_context_iteration (context=0x7fdf8c000ee0, may_block=1) at ../glib/glib/gmain.c:4343
#55 0x00007fdf9a2d8d3c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x55b8680128a0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#56 0x00007fdf9a28668c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fff209f79c0, flags=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#57 0x00007fdf9a2912f9 in QCoreApplication::exec() () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#58 0x00007fdf9a73b052 in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1870
#59 0x00007fdf9af76f2a in QApplication::exec() () at kernel/qapplication.cpp:2832
#60 0x000055b867c1cfc4 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kalendar/kalendar-23.04.0/src/main.cpp:189
[Inferior 1 (process 20100) detached]

Reported using DrKonqi