SUMMARY
Opensuse Tumbleweed


Don't know how to reproduce but getting on boot. Here is the stack trace

Application: KOrganizer Reminder Daemon (korgac), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f70068e8940 (LWP 2671))]

Thread 5 (Thread 0x7f6ffe01d700 (LWP 2737)):
#0  0x00007f700a708ae9 in poll () from /lib64/libc.so.6
#1  0x00007f7008810e36 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f7008810f5c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f700ac54e7b in QEventDispatcherGlib::processEvents (this=0x7f6ff4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f700ac003cb in QEventLoop::exec (this=this@entry=0x7f6ffe01cc60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#5  0x00007f700aa4b016 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#6  0x00007f700aa4c362 in QThreadPrivate::start (arg=0x558c9c42c800) at thread/qthread_unix.cpp:361
#7  0x00007f700918cfab in start_thread () from /lib64/libpthread.so.0
#8  0x00007f700a7136af in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f6ffe81e700 (LWP 2734)):
#0  0x00007f70088102f0 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f7008810d6b in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f7008810f5c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f700ac54e7b in QEventDispatcherGlib::processEvents (this=0x7f6ff0000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f700ac003cb in QEventLoop::exec (this=this@entry=0x7f6ffe81dc60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#5  0x00007f700aa4b016 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#6  0x00007f700aa4c362 in QThreadPrivate::start (arg=0x558c9c38fe90) at thread/qthread_unix.cpp:361
#7  0x00007f700918cfab in start_thread () from /lib64/libpthread.so.0
#8  0x00007f700a7136af in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f6fffa3a700 (LWP 2718)):
#0  0x00007f700885bc99 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f700880ffb4 in g_main_context_release () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f7008810df6 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f7008810f5c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f700ac54e7b in QEventDispatcherGlib::processEvents (this=0x7f6ff8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f700ac003cb in QEventLoop::exec (this=this@entry=0x7f6fffa39c30, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007f700aa4b016 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007f700aece565 in ?? () from /usr/lib64/libQt5DBus.so.5
#8  0x00007f700aa4c362 in QThreadPrivate::start (arg=0x7f700af4ed80) at thread/qthread_unix.cpp:361
#9  0x00007f700918cfab in start_thread () from /lib64/libpthread.so.0
#10 0x00007f700a7136af in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f7004874700 (LWP 2705)):
#0  0x00007f700a708ae9 in poll () from /lib64/libc.so.6
#1  0x00007f70091b7cc7 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f70091b98fa in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f7004aa6788 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f700aa4c362 in QThreadPrivate::start (arg=0x558c9c2dec70) at thread/qthread_unix.cpp:361
#5  0x00007f700918cfab in start_thread () from /lib64/libpthread.so.0
#6  0x00007f700a7136af in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f70068e8940 (LWP 2671)):
[KCrash Handler]
#6  0x00007f700c6f78d9 in Akonadi::BlockAlarmsAttribute::isAlarmTypeBlocked (this=this@entry=0x558c9d6a2ca0, type=KCalCore::Alarm::Display) at /usr/src/debug/akonadi-calendar-18.12.3-1.2.x86_64/src/blockalarmsattribute.cpp:84
#7  0x00007f700c70a54c in Akonadi::ETMCalendar::alarms (this=<optimized out>, from=..., to=..., excludeBlockedAlarms=<optimized out>) at /usr/include/qt5/QtCore/qsharedpointer_impl.h:312
#8  0x0000558c9a8aab39 in KOAlarmClient::checkAlarms (this=0x7ffc91326920) at /usr/include/qt5/QtCore/qsharedpointer_impl.h:312
#9  0x0000558c9a8ab915 in KOAlarmClient::deferredInit (this=0x7ffc91326920) at /usr/src/debug/korganizer-18.12.3-1.2.x86_64/korgac/koalarmclient.cpp:169
#10 0x00007f700ac2b343 in QtPrivate::QSlotObjectBase::call (a=0x7ffc91326010, r=0x7ffc91326920, this=0x558c9c43d720) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:394
#11 QMetaObject::activate (sender=0x7f6ff8019ae0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3774
#12 0x00007f700c1c01e2 in Akonadi::EntityTreeModel::collectionPopulated (this=<optimized out>, _t1=<optimized out>) at /usr/src/debug/akonadi-server-18.12.3-2.1.x86_64/build/src/core/KF5AkonadiCore_autogen/include/moc_entitytreemodel.cpp:513
#13 0x00007f700c1cba4b in Akonadi::EntityTreeModelPrivate::itemFetchJobDone (this=0x558c9c41c990, job=<optimized out>) at /usr/src/debug/akonadi-server-18.12.3-2.1.x86_64/src/core/models/entitytreemodel_p.cpp:1384
#14 0x00007f700c1c13f0 in Akonadi::EntityTreeModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /usr/src/debug/akonadi-server-18.12.3-2.1.x86_64/src/core/models/entitytreemodel.h:681
#15 0x00007f700ac2b206 in QMetaObject::activate (sender=0x558c9c491ef0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3793
#16 0x00007f700bc3bd9c in KJob::result (this=this@entry=0x558c9c491ef0, _t1=<optimized out>, _t1@entry=0x558c9c491ef0, _t2=...) at /usr/src/debug/kcoreaddons-5.56.0-1.1.x86_64/build/src/lib/KF5CoreAddons_autogen/include/moc_kjob.cpp:573
#17 0x00007f700bc3c863 in KJob::finishJob (this=0x558c9c491ef0, emitResult=<optimized out>) at /usr/src/debug/kcoreaddons-5.56.0-1.1.x86_64/src/lib/jobs/kjob.cpp:109
#18 0x00007f700ac36f66 in QtPrivate::QSlotObjectBase::call (a=0x7ffc91326290, r=<optimized out>, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:394
#19 QSingleShotTimer::timerEvent (this=0x558c9d6646a0) at kernel/qtimer.cpp:318
#20 0x00007f700ac2ba3b in QObject::event (this=0x558c9d6646a0, e=<optimized out>) at kernel/qobject.cpp:1241
#21 0x00007f700b6f7551 in QApplicationPrivate::notify_helper (this=this@entry=0x558c9c2bc710, receiver=receiver@entry=0x558c9d6646a0, e=e@entry=0x7ffc913265b0) at kernel/qapplication.cpp:3737
#22 0x00007f700b6fe930 in QApplication::notify (this=0x7ffc913268f0, receiver=0x558c9d6646a0, e=0x7ffc913265b0) at kernel/qapplication.cpp:3484
#23 0x00007f700ac016f9 in QCoreApplication::notifyInternal2 (receiver=0x558c9d6646a0, event=0x7ffc913265b0) at ../../include/QtCore/5.12.2/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:322
#24 0x00007f700ac54273 in QTimerInfoList::activateTimers (this=0x558c9c386850) at kernel/qtimerinfo_unix.cpp:643
#25 0x00007f700ac54ac4 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:182
#26 0x00007f7008810c2e in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#27 0x00007f7008810ec8 in ?? () from /usr/lib64/libglib-2.0.so.0
#28 0x00007f7008810f5c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#29 0x00007f700ac54e63 in QEventDispatcherGlib::processEvents (this=0x558c9c3863a0, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#30 0x00007f700ac003cb in QEventLoop::exec (this=this@entry=0x7ffc91326810, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#31 0x00007f700ac08402 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#32 0x0000558c9a8a94af in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/korganizer-18.12.3-1.2.x86_64/korgac/korgacmain.cpp:68
[Inferior 1 (process 2671) detached]