Application: akonadi_kabc_resource (4.13)
KDE Platform Version: 4.13.0
Qt Version: 4.8.5
Operating System: Linux 3.12.13-gentoo-gnu x86_64
Distribution: "NAME=Gentoo"

-- Information about the crash:
- What I was doing when the application crashed:
Turned on the computer with auto login active. I left the room before the boot loader showed up and when I came back, KDE had finished starting up and drkonqi told me that something crashed. Then I tried akonadictl restart from command line and the same crash happened again. The backtrace is now from this second crash.

This crash never happened before. I did not change any program or library during or since the previous KDE session. When thinking of what I did in the last KDE session that might be related to the crash is
- set up desktop search to not search in /home
- delete about 500 obsolete emails (from roughly 11.000), move some emails into subfolders

The last lines of console output before the crash were these: 

akonadi_kabc_resource_0(3721)/kresources KRES::Factory::self:
akonadi_kabc_resource_0(3721)/kdecore (KSycoca) KSycocaPrivate::openDatabase: Trying to open ksycoca from "/var/tmp/kdecache-neoHgE65K/ksycoca4"
akonadi_kabc_resource_0(3721)/kresources KRES::ManagerImpl::ManagerImpl:
akonadi_kabc_resource_0(3721) KABCResource::doSetOnline: online true resource 0x0
akonadi_kabc_resource_0(3721)/kresources KRES::ManagerImpl::readConfig:
akonadi_kabc_resource_0(3721)/kresources KRES::Factory::self:
akonadi_kabc_resource_0(3721)/libakonadi Akonadi::SessionPrivate::dataReceived: Server protocol version is: 37
akonadi_archivemail_agent(3715)/kdecore (KSycoca) KSycocaPrivate::openDatabase: Trying to open ksycoca from "/var/tmp/kdecache-neoHgE65K/ksycoca4"
AkonadiAgentServer(3723)/akonadiresource (kalarm) KAlarmResource::readFromFile: "/home/neo/.kde4/share/apps/kalarm/expired.ics"
AkonadiAgentServer(3723)/kdepimlibs (kcalcore) KCalCore::ICalFormat::load: "/home/neo/.kde4/share/apps/kalarm/expired.ics"
AkonadiAgentServer(3723)/kdepimlibs (kalarmcal) KAlarmCal::Private::readKAlarmVersion: File= "/home/neo/.kde4/share/apps/kalarm/expired.ics" , version= "2.7.0"
AkonadiAgentServer(3723)/kio (KDirWatch) KDirWatchPrivate::addEntry: Added File "/home/neo/.kde4/share/apps/kalarm/expired.ics" for "" ["KDirWatch-1"]
Database "akonadi" opened using driver "QMYSQL" 
AkonadiAgentServer(3723)/libakonadi Akonadi::SessionPrivate::dataReceived: Server protocol version is: 37
akonadi_archivemail_agent(3715)/libakonadi Akonadi::SessionPrivate::init: "Archive Mail Kernel ETM"
akonadi_archivemail_agent(3715)/libakonadi Akonadi::SessionPrivate::reconnect: connectToServer "/tmp/akonadi-neo.j3Vexm/akonadiserver.socket"
QDBusObjectPath Akonadi::Server::NotificationManager::subscribeV2(const QString&, bool) Akonadi::Server::NotificationManager(0x1612010) "akonadi_archivemail_agent_3715_OQYUvH" true 
QDBusObjectPath Akonadi::Server::NotificationManager::subscribeV2(const QString&, bool) Akonadi::Server::NotificationManager(0x1612010) "akonadi_archivemail_agent_3715_tE9TbE" true 
akonadi_archivemail_agent(3715)/libakonadi Akonadi::EntityTreeModelPrivate::startFirstListJob: GEN true false false
akonadi_archivemail_agent(3715)/libakonadi Akonadi::SessionPrivate::dataReceived: Server protocol version is: 37
akonadi_archivemail_agent(3715)/libakonadi Akonadi::SessionPrivate::dataReceived: Server protocol version is: 37
Database "akonadi" opened using driver "QMYSQL" 
AkonadiAgentServer(3724)/kio (KDirWatch) KDirWatchPrivate::KDirWatchPrivate: INotify available:  true
AkonadiAgentServer(3724)/akonadiresource (kalarm) KAlarmResource::KAlarmResource: "akonadi_kalarm_resource_2"
Agent instance created in separate process. 
AkonadiAgentServer(3722)/kio (KDirWatch) KDirWatchPrivate::KDirWatchPrivate: INotify available:  true
AkonadiAgentServer(3722)/akonadiresource (kalarm) KAlarmResource::KAlarmResource: "akonadi_kalarm_resource_0"
Agent instance created in separate process. 
KCrash: Application 'akonadi_kabc_resource' crashing...
KCrash: Attempting to start /usr/lib64/kde4/libexec/drkonqi from kdeinit

The crash can be reproduced sometimes.

-- Backtrace:
Application: Adressbuch vom Typ KDE-Adressbuch (herkömmlich) (akonadi_kabc_resource), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[KCrash Handler]
#6  0x000000000040efe3 in KABCResource::collectionChanged (this=0x12f7b00, collection=...) at /var/tmp/portage/kde-base/kdepim-runtime-4.13.0/work/kdepim-runtime-4.13.0/resources/kabc/kabcresource.cpp:523
#7  0x00007f6b37bcbf1e in Akonadi::ResourceBasePrivate::collectionChanged (this=0x1346830, collection=...) at /var/tmp/portage/kde-base/kdepimlibs-4.13.0/work/kdepimlibs-4.13.0/akonadi/resourcebase.cpp:340
#8  0x00007f6b37bc499d in Akonadi::ResourceBasePrivate::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.13.0/work/kdepimlibs-4.13.0_build/akonadi/resourcebase.moc:108
#9  0x00007f6b376f74ba in QMetaObject::activate (sender=0x12f1870, m=m@entry=0x7f6b37eeeec0 <Akonadi::Monitor::staticMetaObject>, local_signal_index=local_signal_index@entry=13, argv=argv@entry=0x7fff0d976fc0) at kernel/qobject.cpp:3547
#10 0x00007f6b37ba32b9 in Akonadi::Monitor::collectionChanged (this=<optimized out>, _t1=...) at /var/tmp/portage/kde-base/kdepimlibs-4.13.0/work/kdepimlibs-4.13.0_build/akonadi/moc_monitor.cpp:322
#11 0x00007f6b37baa7b8 in Akonadi::MonitorPrivate::emitCollectionNotification (this=this@entry=0x1349f10, msg=..., col=..., par=..., dest=...) at /var/tmp/portage/kde-base/kdepimlibs-4.13.0/work/kdepimlibs-4.13.0/akonadi/monitor_p.cpp:925
#12 0x00007f6b37bad038 in Akonadi::MonitorPrivate::emitNotification (this=0x1349f10, msg=...) at /var/tmp/portage/kde-base/kdepimlibs-4.13.0/work/kdepimlibs-4.13.0/akonadi/monitor_p.cpp:494
#13 0x00007f6b37ba98fe in Akonadi::MonitorPrivate::flushPipeline (this=this@entry=0x1349f10) at /var/tmp/portage/kde-base/kdepimlibs-4.13.0/work/kdepimlibs-4.13.0/akonadi/monitor_p.cpp:706
#14 0x00007f6b37ba99a1 in Akonadi::MonitorPrivate::dataAvailable (this=0x1349f10) at /var/tmp/portage/kde-base/kdepimlibs-4.13.0/work/kdepimlibs-4.13.0/akonadi/monitor_p.cpp:715
#15 0x00007f6b376f74ba in QMetaObject::activate (sender=sender@entry=0x12f2010, m=m@entry=0x7f6b37eecb60 <Akonadi::EntityCacheBase::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3547
#16 0x00007f6b37b4f8c5 in Akonadi::EntityCacheBase::dataAvailable (this=this@entry=0x12f2010) at /var/tmp/portage/kde-base/kdepimlibs-4.13.0/work/kdepimlibs-4.13.0_build/akonadi/moc_entitycache_p.cpp:101
#17 0x00007f6b37b102bc in Akonadi::EntityCache<Akonadi::Collection, Akonadi::CollectionFetchJob, Akonadi::CollectionFetchScope>::processResult (this=0x12f2010, job=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.13.0/work/kdepimlibs-4.13.0/akonadi/entitycache_p.h:203
#18 0x00007f6b376f74ba in QMetaObject::activate (sender=sender@entry=0x1394680, m=m@entry=0x7f6b3754f4c0 <KJob::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7fff0d977570) at kernel/qobject.cpp:3547
#19 0x00007f6b371bd401 in KJob::result (this=this@entry=0x1394680, _t1=_t1@entry=0x1394680) at /var/tmp/portage/kde-base/kdelibs-4.13.0/work/kdelibs-4.13.0_build/kdecore/kjob.moc:207
#20 0x00007f6b371bd448 in KJob::emitResult (this=this@entry=0x1394680) at /var/tmp/portage/kde-base/kdelibs-4.13.0/work/kdelibs-4.13.0/kdecore/jobs/kjob.cpp:318
#21 0x00007f6b37b9ef27 in Akonadi::JobPrivate::handleResponse (this=<optimized out>, tag=..., data=...) at /var/tmp/portage/kde-base/kdepimlibs-4.13.0/work/kdepimlibs-4.13.0/akonadi/job.cpp:64
#22 0x00007f6b37bea7de in Akonadi::SessionPrivate::dataReceived (this=0x1343570) at /var/tmp/portage/kde-base/kdepimlibs-4.13.0/work/kdepimlibs-4.13.0/akonadi/session.cpp:236
#23 0x00007f6b376f74ba in QMetaObject::activate (sender=0x12fa3d0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#24 0x00007f6b376f74ba in QMetaObject::activate (sender=sender@entry=0x1348ad8, m=m@entry=0x7f6b37a41460 <QIODevice::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3547
#25 0x00007f6b377424d5 in QIODevice::readyRead (this=this@entry=0x1348ad8) at .moc/release-shared/moc_qiodevice.cpp:104
#26 0x00007f6b34d5428e in QAbstractSocketPrivate::canReadNotification (this=0x13496f0) at socket/qabstractsocket.cpp:654
#27 0x00007f6b34d5f12d in event (this=<optimized out>, e=<optimized out>) at socket/qnativesocketengine.cpp:1151
#28 QReadNotifier::event (this=<optimized out>, e=<optimized out>) at socket/qnativesocketengine.cpp:1148
#29 0x00007f6b35a75e7c in QApplicationPrivate::notify_helper (this=this@entry=0x1197bb0, receiver=receiver@entry=0x133cb80, e=e@entry=0x7fff0d977e00) at kernel/qapplication.cpp:4562
#30 0x00007f6b35a78952 in QApplication::notify (this=this@entry=0x7fff0d9780f0, receiver=receiver@entry=0x133cb80, e=e@entry=0x7fff0d977e00) at kernel/qapplication.cpp:3944
#31 0x00007f6b3679ae96 in KApplication::notify (this=0x7fff0d9780f0, receiver=0x133cb80, event=0x7fff0d977e00) at /var/tmp/portage/kde-base/kdelibs-4.13.0/work/kdelibs-4.13.0/kdeui/kernel/kapplication.cpp:311
#32 0x00007f6b376e2b9d in QCoreApplication::notifyInternal (this=0x7fff0d9780f0, receiver=0x133cb80, event=event@entry=0x7fff0d977e00) at kernel/qcoreapplication.cpp:949
#33 0x00007f6b37711c60 in sendEvent (event=0x7fff0d977e00, receiver=<optimized out>) at kernel/qcoreapplication.h:231
#34 socketNotifierSourceDispatch (source=source@entry=0x1197db0) at kernel/qeventdispatcher_glib.cpp:110
#35 0x00007f6b336ab340 in g_main_dispatch (context=0x1198650) at /var/tmp/portage/dev-libs/glib-2.38.2-r1/work/glib-2.38.2/glib/gmain.c:3066
#36 g_main_context_dispatch (context=context@entry=0x1198650) at /var/tmp/portage/dev-libs/glib-2.38.2-r1/work/glib-2.38.2/glib/gmain.c:3642
#37 0x00007f6b336ab6a8 in g_main_context_iterate (context=context@entry=0x1198650, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /var/tmp/portage/dev-libs/glib-2.38.2-r1/work/glib-2.38.2/glib/gmain.c:3713
#38 0x00007f6b336ab768 in g_main_context_iteration (context=0x1198650, may_block=1) at /var/tmp/portage/dev-libs/glib-2.38.2-r1/work/glib-2.38.2/glib/gmain.c:3774
#39 0x00007f6b3771166f in QEventDispatcherGlib::processEvents (this=0x1171960, flags=...) at kernel/qeventdispatcher_glib.cpp:427
#40 0x00007f6b35b18052 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#41 0x00007f6b376e1775 in QEventLoop::processEvents (this=this@entry=0x7fff0d978060, flags=...) at kernel/qeventloop.cpp:149
#42 0x00007f6b376e1a26 in QEventLoop::exec (this=this@entry=0x7fff0d978060, flags=...) at kernel/qeventloop.cpp:204
#43 0x00007f6b376e6e5a in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1221
#44 0x00007f6b35a74799 in QApplication::exec () at kernel/qapplication.cpp:3823
#45 0x00007f6b37bc4acf in Akonadi::ResourceBase::init (r=r@entry=0x12f7b00) at /var/tmp/portage/kde-base/kdepimlibs-4.13.0/work/kdepimlibs-4.13.0/akonadi/resourcebase.cpp:556
#46 0x0000000000415eb9 in Akonadi::ResourceBase::init<KABCResource> (argc=<optimized out>, argv=<optimized out>) at /usr/include/akonadi/resourcebase.h:192
#47 0x00007f6b34ff0e0f in __libc_start_main (main=0x40bfc0 <main(int, char**)>, argc=3, argv=0x7fff0d978218, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff0d978208) at libc-start.c:285
#48 0x000000000040bff5 in _start ()

Reported using DrKonqi