Application: kalendar (22.12.3)

Qt Version: 5.15.8
Frameworks Version: 5.103.0
Operating System: Linux 6.1.0-10-amd64 x86_64
Windowing System: X11
Distribution: Debian GNU/Linux 12 (bookworm)
DrKonqi: 5.27.5 [KCrashBackend]

-- Information about the crash:
The kalendar closed when changing the percentage of a task synchronized to nextcloud. 
The task was from last month not completed.

The crash can be reproduced every time.

-- Backtrace:
Application: Kalendar (kalendar), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f8626d96bd0 in QDateTime::operator=(QDateTime const&) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00005646b0ca7b56 in ?? ()
#6  0x00007f8626ee8f4f in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f8626e4bb1c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8626e867c5 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f8626ee8f7c in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f8626e4bb1c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f8626e867c5 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f8626ee8f7c in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f8626e4bb1c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f8626e867c5 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f8626ee8f7c in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f8626e4bb1c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f86291ed703 in ?? () from /lib/x86_64-linux-gnu/libKF5ItemModels.so.5
#18 0x00007f86291eef76 in ?? () from /lib/x86_64-linux-gnu/libKF5ItemModels.so.5
#19 0x00007f8626ee8f4f in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f8626e4bb1c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f862958714d in Akonadi::EntityTreeModelPrivate::dataChanged(QModelIndex const&, QModelIndex const&) () from /lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#22 0x00007f862958fa19 in Akonadi::EntityTreeModelPrivate::monitoredItemChanged(Akonadi::Item const&, QSet<QByteArray> const&) () from /lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#23 0x00007f8626ee8f7c in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f86294de497 in Akonadi::Monitor::itemChanged(Akonadi::Item const&, QSet<QByteArray> const&) () from /lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#25 0x00007f86294ef457 in Akonadi::MonitorPrivate::emitItemsNotification(Akonadi::Protocol::ItemChangeNotification const&, QVector<Akonadi::Item> const&, Akonadi::Collection const&, Akonadi::Collection const&) () from /lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#26 0x00007f86294f03dc in Akonadi::MonitorPrivate::emitNotification(QSharedPointer<Akonadi::Protocol::ChangeNotification> const&) () from /lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#27 0x00007f86294edb19 in Akonadi::MonitorPrivate::flushPipeline() () from /lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#28 0x00007f86294edf29 in Akonadi::MonitorPrivate::dataAvailable() () from /lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#29 0x00007f8626ee8f4f in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f8626ee8f7c in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f86287a1775 in KJob::result(KJob*, KJob::QPrivateSignal) () from /lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#32 0x00007f86287a2c5b in KJob::finishJob(bool) () from /lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#33 0x00007f8626edd6f0 in QObject::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f8627b62fae in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007f8626eb16f8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f8626eb4681 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f8626f0a153 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f8624b1e7a9 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007f8624b1ea38 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007f8624b1eacc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007f8626f09836 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007f8626eb017b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x00007f8626eb82d6 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#44 0x00005646b0c78341 in ?? ()
#45 0x00007f8626a4618a in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#46 0x00007f8626a46245 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#47 0x00005646b0c790c1 in ?? ()
[Inferior 1 (process 22691) detached]

Reported using DrKonqi