Application: korgac (5.1.3)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-21-generic x86_64
Distribution: Ubuntu 16.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I've changed Dictionary (Autocorrection language is the same) to another language;
in the "Edit Identity" setting in Kontact.

The crash can be reproduced every time.

-- Backtrace:
Application: KOrganizer-Erinnerungsmodul (korgac), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f1356189940 (LWP 3971))]

Thread 4 (Thread 0x7f1351fcc700 (LWP 3983)):
#0  0x00007f13648cda49 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f13648888b9 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f136488924b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f136488942c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f136bf89a9b in QEventDispatcherGlib::processEvents (this=0x7f13440008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f136bf30dea in QEventLoop::exec (this=this@entry=0x7f1351fcbc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f136bd4d8a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f136bd5284e in QThreadPrivate::start (arg=0x187a1a0) at thread/qthread_unix.cpp:331
#8  0x00007f1364daa6fa in start_thread (arg=0x7f1351fcc700) at pthread_create.c:333
#9  0x00007f136b452b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f13517cb700 (LWP 3984)):
#0  QThreadData::current (createIfNecessary=createIfNecessary@entry=true) at thread/qthread_unix.cpp:213
#1  0x00007f136bf88ffa in postEventSourcePrepare (s=0x7f13480012d0, timeout=0x7f13517caac4) at kernel/qeventdispatcher_glib.cpp:247
#2  0x00007f13648888ad in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f136488924b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f136488942c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f136bf89a9b in QEventDispatcherGlib::processEvents (this=0x7f13480008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f136bf30dea in QEventLoop::exec (this=this@entry=0x7f13517cac80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f136bd4d8a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007f136bd5284e in QThreadPrivate::start (arg=0x18759c0) at thread/qthread_unix.cpp:331
#9  0x00007f1364daa6fa in start_thread (arg=0x7f13517cb700) at pthread_create.c:333
#10 0x00007f136b452b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f1350fca700 (LWP 3987)):
#0  0x00007f136b446e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f136488931c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f136488942c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f136bf89a9b in QEventDispatcherGlib::processEvents (this=0x7f133c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f136bf30dea in QEventLoop::exec (this=this@entry=0x7f1350fc9c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f136bd4d8a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f136bd5284e in QThreadPrivate::start (arg=0x1870710) at thread/qthread_unix.cpp:331
#7  0x00007f1364daa6fa in start_thread (arg=0x7f1350fca700) at pthread_create.c:333
#8  0x00007f136b452b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f1356189940 (LWP 3971)):
[KCrash Handler]
#6  0x00007f136fadcc90 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5CalendarCore.so.5
#7  0x00007f136fad8894 in KCalCore::Calendar::setupRelations(QSharedPointer<KCalCore::Incidence> const&) () from /usr/lib/x86_64-linux-gnu/libKF5CalendarCore.so.5
#8  0x00007f136fb16bac in KCalCore::MemoryCalendar::addIncidence(QSharedPointer<KCalCore::Incidence> const&) () from /usr/lib/x86_64-linux-gnu/libKF5CalendarCore.so.5
#9  0x00007f13704b0e9e in ?? () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCalendar.so.5
#10 0x00007f13704be6f8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCalendar.so.5
#11 0x00007f13704bf959 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCalendar.so.5
#12 0x00007f136bf61e4f in QtPrivate::QSlotObjectBase::call (a=0x7ffcde598e70, r=0x1826b00, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#13 QMetaObject::activate (sender=sender@entry=0x1889de0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffcde598e70) at kernel/qobject.cpp:3698
#14 0x00007f136bf627d7 in QMetaObject::activate (sender=sender@entry=0x1889de0, m=m@entry=0x7f136c17bec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffcde598e70) at kernel/qobject.cpp:3578
#15 0x00007f136bfde1e6 in QAbstractItemModel::layoutChanged (this=this@entry=0x1889de0, _t1=..., _t2=_t2@entry=QAbstractItemModel::NoLayoutChangeHint) at .moc/moc_qabstractitemmodel.cpp:562
#16 0x00007f136beff466 in QSortFilterProxyModelPrivate::_q_sourceLayoutChanged (this=<optimized out>, sourceParents=..., hint=QAbstractItemModel::NoLayoutChangeHint) at itemmodels/qsortfilterproxymodel.cpp:1364
#17 0x00007f136bf0479b in QSortFilterProxyModel::qt_static_metacall (_o=_o@entry=0x1889de0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=10, _a=_a@entry=0x7ffcde5990b0) at .moc/moc_qsortfilterproxymodel.cpp:207
#18 0x00007f136bf61fca in QMetaObject::activate (sender=sender@entry=0x1881c20, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffcde5990b0) at kernel/qobject.cpp:3713
#19 0x00007f136bf627d7 in QMetaObject::activate (sender=sender@entry=0x1881c20, m=m@entry=0x7f136c17bec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffcde5990b0) at kernel/qobject.cpp:3578
#20 0x00007f136bfde1e6 in QAbstractItemModel::layoutChanged (this=this@entry=0x1881c20, _t1=..., _t2=_t2@entry=QAbstractItemModel::NoLayoutChangeHint) at .moc/moc_qabstractitemmodel.cpp:562
#21 0x00007f136beff16a in QSortFilterProxyModel::invalidate (this=0x1881c20) at itemmodels/qsortfilterproxymodel.cpp:2548
#22 0x00007f136bf61e4f in QtPrivate::QSlotObjectBase::call (a=0x7ffcde5991d0, r=0x1881c20, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#23 QMetaObject::activate (sender=0x1869880, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3698
#24 0x00007f136f1d2ae1 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5IdentityManagement.so.5
#25 0x00007f136f1d4885 in KIdentityManagement::IdentityManager::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/libKF5IdentityManagement.so.5
#26 0x00007f1370ecc913 in QDBusConnectionPrivate::deliverCall (this=0x1797980, object=0x1869880, msg=..., metaTypes=..., slotIdx=12) at qdbusintegrator.cpp:978
#27 0x00007f136bf62ea1 in QObject::event (this=0x1869880, e=<optimized out>) at kernel/qobject.cpp:1239
#28 0x00007f136c82605c in QApplicationPrivate::notify_helper (this=this@entry=0x174f3b0, receiver=receiver@entry=0x1869880, e=e@entry=0x18c8a80) at kernel/qapplication.cpp:3716
#29 0x00007f136c82b516 in QApplication::notify (this=0x7ffcde599b70, receiver=0x1869880, e=0x18c8a80) at kernel/qapplication.cpp:3499
#30 0x00007f136bf3362b in QCoreApplication::notifyInternal (this=0x7ffcde599b70, receiver=0x1869880, event=event@entry=0x18c8a80) at kernel/qcoreapplication.cpp:965
#31 0x00007f136bf35a26 in QCoreApplication::sendEvent (event=0x18c8a80, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#32 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x172d7f0) at kernel/qcoreapplication.cpp:1593
#33 0x00007f136bf35f08 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#34 0x00007f136bf89673 in postEventSourceDispatch (s=0x17854a0) at kernel/qeventdispatcher_glib.cpp:271
#35 0x00007f1364889127 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f1364889380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f136488942c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007f136bf89a7f in QEventDispatcherGlib::processEvents (this=0x1780b40, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#39 0x00007f136bf30dea in QEventLoop::exec (this=this@entry=0x7ffcde5999f0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#40 0x00007f136bf38e8c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#41 0x00000000004177d5 in main ()

Reported using DrKonqi