Application: kontact (4.9.2)
KDE Platform Version: 4.9.2 (Compiled from sources)
Qt Version: 4.8.3
Operating System: Linux 3.6.2-gentoo x86_64
Distribution: "Gentoo Base System release 2.1"

-- Information about the crash:
- What I was doing when the application crashed:
→ Rightclicked on the toplevel element of an IMAP account
→ Selected "Manage Local Subscriptions" from the context menu
→ De-selected some directories
→ Clicked OK to confirm
→ KMail crashed

After restarting KMail, the changed subscription settings were actually applied and trying to reproduce this issue didn't work.

The crash does not seem to be reproducible.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fc4067b6780 (LWP 958))]

Thread 3 (Thread 0x7fc401a41700 (LWP 959)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fc4196cfe54 in WTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib64/qt4/libQtWebKit.so.4
#2  0x00007fc414af4d96 in start_thread (arg=0x7fc401a41700) at pthread_create.c:305
#3  0x00007fc41a86546d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 2 (Thread 0x7fc401140700 (LWP 960)):
#0  0x00007fc41a857a6d in read () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007fc413d0a550 in read (__nbytes=16, __buf=0x7fc40113fc50, __fd=<optimized out>) at /usr/include/bits/unistd.h:45
#2  g_wakeup_acknowledge (wakeup=0x64aec0) at gwakeup.c:212
#3  0x00007fc413ccd2e4 in g_main_context_check (context=0x7fc3fc0009a0, max_priority=2147483647, fds=0x7fc3fc0029c0, n_fds=1) at gmain.c:2980
#4  0x00007fc413ccd72c in g_main_context_iterate (context=0x7fc3fc0009a0, block=1, dispatch=1, self=<optimized out>) at gmain.c:3143
#5  0x00007fc413ccd8a4 in g_main_context_iteration (context=0x7fc3fc0009a0, may_block=1) at gmain.c:3207
#6  0x00007fc41bca28e6 in QEventDispatcherGlib::processEvents (this=0x7fc3fc0008c0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007fc41bc724f2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007fc41bc727a5 in QEventLoop::exec (this=0x7fc40113fde0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007fc41bb6cd38 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#10 0x00007fc41bb6f3f6 in QThreadPrivate::start (arg=0x85b510) at thread/qthread_unix.cpp:338
#11 0x00007fc414af4d96 in start_thread (arg=0x7fc401140700) at pthread_create.c:305
#12 0x00007fc41a86546d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7fc4067b6780 (LWP 958)):
[KCrash Handler]
#6  QSortFilterProxyModelPrivate::updateChildrenMapping (this=0x7ea7c40, source_parent=..., parent_mapping=0x7eb7150, orient=132807936, start=21118432, end=12, delta_item_count=1, remove=true) at itemviews/qsortfilterproxymodel.cpp:948
#7  0x00007fc41b59a06e in QSortFilterProxyModelPrivate::source_items_removed (this=0x7ea7c40, source_parent=..., start=12, end=12, orient=Qt::Vertical) at itemviews/qsortfilterproxymodel.cpp:890
#8  0x00007fc41bc7cb7a in QMetaMethod::invoke (this=0x7ffffa81ef10, object=0x7ea7400, connectionType=Qt::DirectConnection, returnValue=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1664
#9  0x00007fc41bc7d8f7 in QMetaObject::invokeMethod (obj=0x7ea7400, member=<optimized out>, type=Qt::DirectConnection, ret=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1179
#10 0x00007fc41c6e5b9e in invokeMethod (val9=..., val8=..., val7=..., val6=..., val5=..., val4=..., val3=..., val2=..., val1=..., val0=..., type=Qt::DirectConnection, member=0x7fc41c893994 "_q_sourceRowsRemoved", obj=<optimized out>) at /usr/include/qt4/QtCore/qobjectdefs.h:418
#11 invokeRowsRemoved (end=12, start=12, source_parent=..., this=<optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.9.2/work/kdelibs-4.9.2/kdeui/itemviews/krecursivefilterproxymodel.cpp:88
#12 KRecursiveFilterProxyModelPrivate::sourceRowsRemoved (this=0x7ea74d0, source_parent=..., start=<optimized out>, end=<optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.9.2/work/kdelibs-4.9.2/kdeui/itemviews/krecursivefilterproxymodel.cpp:250
#13 0x00007fc41bc88fcb in QMetaObject::activate (sender=0x7ea6fd0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffffa81f240) at kernel/qobject.cpp:3547
#14 0x00007fc41bcd3fd4 in QAbstractItemModel::rowsRemoved (this=<optimized out>, _t1=<optimized out>, _t2=12, _t3=12) at .moc/release-shared/moc_qabstractitemmodel.cpp:211
#15 0x00007fc41bc6d9bb in QAbstractItemModel::endRemoveRows (this=0x7ea6fd0) at kernel/qabstractitemmodel.cpp:2487
#16 0x00007fc41bc88fcb in QMetaObject::activate (sender=0x7ea6540, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffffa81f410) at kernel/qobject.cpp:3547
#17 0x00007fc41bcd3fd4 in QAbstractItemModel::rowsRemoved (this=<optimized out>, _t1=<optimized out>, _t2=12, _t3=12) at .moc/release-shared/moc_qabstractitemmodel.cpp:211
#18 0x00007fc41bc6d9bb in QAbstractItemModel::endRemoveRows (this=0x7ea6540) at kernel/qabstractitemmodel.cpp:2487
#19 0x00007fc41bc88fcb in QMetaObject::activate (sender=0xbfb470, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffffa81f5e0) at kernel/qobject.cpp:3547
#20 0x00007fc41bcd3fd4 in QAbstractItemModel::rowsRemoved (this=<optimized out>, _t1=<optimized out>, _t2=12, _t3=12) at .moc/release-shared/moc_qabstractitemmodel.cpp:211
#21 0x00007fc41bc6d9bb in QAbstractItemModel::endRemoveRows (this=0xbfb470) at kernel/qabstractitemmodel.cpp:2487
#22 0x00007fc41b59d320 in QSortFilterProxyModelPrivate::remove_source_items (this=0x96d3a0, source_to_proxy=..., proxy_to_source=..., source_items=<optimized out>, source_parent=<optimized out>, orient=Qt::Vertical, emit_signal=true) at itemviews/qsortfilterproxymodel.cpp:539
#23 0x00007fc41b59ecc1 in QSortFilterProxyModelPrivate::source_items_about_to_be_removed (this=0x96d3a0, source_parent=..., start=12, end=12, orient=Qt::Vertical) at itemviews/qsortfilterproxymodel.cpp:840
#24 0x00007fc41bc88fcb in QMetaObject::activate (sender=0xb59070, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffffa81f8e0) at kernel/qobject.cpp:3547
#25 0x00007fc41bcd3f84 in QAbstractItemModel::rowsAboutToBeRemoved (this=<optimized out>, _t1=<optimized out>, _t2=12, _t3=12) at .moc/release-shared/moc_qabstractitemmodel.cpp:204
#26 0x00007fc41bc6a788 in QAbstractItemModel::beginRemoveRows (this=<optimized out>, parent=..., first=12, last=12) at kernel/qabstractitemmodel.cpp:2470
#27 0x00007fc416fa61e5 in Akonadi::EntityTreeModelPrivate::monitoredCollectionRemoved (this=0xd5b860, collection=...) at /var/tmp/portage/kde-base/kdepimlibs-4.9.2/work/kdepimlibs-4.9.2/akonadi/entitytreemodel_p.cpp:805
#28 0x00007fc41bc88fcb in QMetaObject::activate (sender=0xc89790, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffffa81fbc0) at kernel/qobject.cpp:3547
#29 0x00007fc416fdc115 in Akonadi::Monitor::collectionUnsubscribed (this=<optimized out>, _t1=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.9.2/work/kdepimlibs-4.9.2_build/akonadi/monitor.moc:273
#30 0x00007fc416fde6a0 in Akonadi::MonitorPrivate::emitCollectionNotification (this=0xce3340, msg=..., col=..., par=<optimized out>, dest=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.9.2/work/kdepimlibs-4.9.2/akonadi/monitor_p.cpp:630
#31 0x00007fc416fe1621 in Akonadi::MonitorPrivate::emitNotification (this=0xce3340, msg=...) at /var/tmp/portage/kde-base/kdepimlibs-4.9.2/work/kdepimlibs-4.9.2/akonadi/monitor_p.cpp:286
#32 0x00007fc416f42701 in Akonadi::ChangeRecorderPrivate::emitNotification (this=0xce3340, msg=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.9.2/work/kdepimlibs-4.9.2/akonadi/changerecorder_p.cpp:51
#33 0x00007fc416fdff6d in Akonadi::MonitorPrivate::dispatchNotifications (this=0xce3340) at /var/tmp/portage/kde-base/kdepimlibs-4.9.2/work/kdepimlibs-4.9.2/akonadi/monitor_p.cpp:448
#34 0x00007fc416fe1c0a in Akonadi::MonitorPrivate::slotNotify (this=0xce3340, msgs=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.9.2/work/kdepimlibs-4.9.2/akonadi/monitor_p.cpp:419
#35 0x00007fc416f43302 in Akonadi::ChangeRecorderPrivate::slotNotify (this=<optimized out>, msgs=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.9.2/work/kdepimlibs-4.9.2/akonadi/changerecorder_p.cpp:42
#36 0x00007fc41bc88fcb in QMetaObject::activate (sender=0xbc9f50, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffffa8201b0) at kernel/qobject.cpp:3547
#37 0x00007fc417069132 in OrgFreedesktopAkonadiNotificationSourceInterface::notify (this=<optimized out>, _t1=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.9.2/work/kdepimlibs-4.9.2_build/akonadi/notificationsourceinterface.moc:105
#38 0x00007fc417069174 in OrgFreedesktopAkonadiNotificationSourceInterface::qt_static_metacall (_o=0xbc9f50, _c=<optimized out>, _id=<optimized out>, _a=0x7ffffa8202e0) at /var/tmp/portage/kde-base/kdepimlibs-4.9.2/work/kdepimlibs-4.9.2_build/akonadi/notificationsourceinterface.moc:54
#39 0x00007fc41706932b in OrgFreedesktopAkonadiNotificationSourceInterface::qt_metacall (this=0xbc9f50, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7ffffa8202e0) at /var/tmp/portage/kde-base/kdepimlibs-4.9.2/work/kdepimlibs-4.9.2_build/akonadi/notificationsourceinterface.moc:95
#40 0x00007fc417321f0a in QDBusConnectionPrivate::deliverCall (this=0x628ae0, object=0xbc9f50, msg=..., metaTypes=..., slotIdx=5) at qdbusintegrator.cpp:947
#41 0x00007fc41bc88406 in QObject::event (this=0xbc9f50, e=<optimized out>) at kernel/qobject.cpp:1195
#42 0x00007fc41b008344 in QApplicationPrivate::notify_helper (this=0x63f800, receiver=0xbc9f50, e=0x650a040) at kernel/qapplication.cpp:4557
#43 0x00007fc41b00ce1f in QApplication::notify (this=<optimized out>, receiver=0xbc9f50, e=0x650a040) at kernel/qapplication.cpp:4418
#44 0x00007fc41c7250e6 in KApplication::notify (this=0x7ffffa820f10, receiver=0xbc9f50, event=0x650a040) at /var/tmp/portage/kde-base/kdelibs-4.9.2/work/kdelibs-4.9.2/kdeui/kernel/kapplication.cpp:311
#45 0x00007fc41bc7378b in QCoreApplication::notifyInternal (this=0x7ffffa820f10, receiver=0xbc9f50, event=0x650a040) at kernel/qcoreapplication.cpp:915
#46 0x00007fc41bc76d57 in sendEvent (event=0x650a040, receiver=0xbc9f50) at kernel/qcoreapplication.h:231
#47 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x6076a0) at kernel/qcoreapplication.cpp:1539
#48 0x00007fc41bca26f3 in sendPostedEvents () at kernel/qcoreapplication.h:236
#49 postEventSourceDispatch (s=0x63df50) at kernel/qeventdispatcher_glib.cpp:279
#50 0x00007fc413ccd4a2 in g_main_dispatch (context=0x64ab30) at gmain.c:2539
#51 g_main_context_dispatch (context=0x64ab30) at gmain.c:3075
#52 0x00007fc413ccd7e8 in g_main_context_iterate (context=0x64ab30, block=1, dispatch=1, self=<optimized out>) at gmain.c:3146
#53 0x00007fc413ccd8a4 in g_main_context_iteration (context=0x64ab30, may_block=1) at gmain.c:3207
#54 0x00007fc41bca288f in QEventDispatcherGlib::processEvents (this=0x608b60, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#55 0x00007fc41b0ad97e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#56 0x00007fc41bc724f2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#57 0x00007fc41bc727a5 in QEventLoop::exec (this=0x7ffffa820e60, flags=...) at kernel/qeventloop.cpp:204
#58 0x00007fc41bc771fb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#59 0x00000000004041df in main (argc=1, argv=0x7ffffa821538) at /var/tmp/portage/kde-base/kontact-4.9.2/work/kontact-4.9.2/kontact/src/main.cpp:219

Possible duplicates by query: bug 306051.

Reported using DrKonqi