Application: kontact ()

Qt Version: 5.4.2
Operating System: Linux 4.2.0-17-generic i686
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed:
Kontact crashs every time when activating "tasks" (Aufgaben).

The crash can be reproduced every time.

-- Backtrace:
Application: kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xad8917c0 (LWP 20701))]

Thread 5 (Thread 0xabee3b40 (LWP 20703)):
#0  0xb7729be8 in __kernel_vsyscall ()
#1  0xb299b25c in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb5fefcf6 in __pthread_cond_wait (cond=0xb5d85d34, mutex=0xb5d85d1c) at forward.c:149
#3  0xb50e911a in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#4  0xb50e916c in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#5  0xb29961aa in start_thread (arg=0xabee3b40) at pthread_create.c:333
#6  0xb5fe2fde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 4 (Thread 0xaaebdb40 (LWP 20704)):
#0  0xb7729be8 in __kernel_vsyscall ()
#1  0xb5fd83db in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0xb26e5980 in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb26d6f1c in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb26d7054 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb65027e4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb64a52b3 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#7  0xb64a5702 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#8  0xb62ce23d in QThread::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#9  0xb62ce318 in QThread::run() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#10 0xb62d365b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#11 0xb29961aa in start_thread (arg=0xaaebdb40) at pthread_create.c:333
#12 0xb5fe2fde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 3 (Thread 0xa9cc7b40 (LWP 20705)):
#0  0xb7729be8 in __kernel_vsyscall ()
#1  0xb299b25c in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb5fefcf6 in __pthread_cond_wait (cond=0xab61c138, mutex=0xab61c120) at forward.c:149
#3  0xb5117cec in WTF::ThreadCondition::wait(WTF::Mutex&) () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#4  0xb4dd64c6 in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#5  0xb51002e2 in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#6  0xb51176f1 in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#7  0xb29961aa in start_thread (arg=0xa9cc7b40) at pthread_create.c:333
#8  0xb5fe2fde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 2 (Thread 0xa94a7b40 (LWP 20706)):
#0  0xb7729be8 in __kernel_vsyscall ()
#1  0xb299b25c in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb5fefcf6 in __pthread_cond_wait (cond=0xab620734, mutex=0xab62071c) at forward.c:149
#3  0xb5117cec in WTF::ThreadCondition::wait(WTF::Mutex&) () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#4  0xb4dd75f5 in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#5  0xb51002e2 in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#6  0xb51176f1 in ?? () from /usr/lib/i386-linux-gnu/libQt5WebKit.so.5
#7  0xb29961aa in start_thread (arg=0xa94a7b40) at pthread_create.c:333
#8  0xb5fe2fde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 1 (Thread 0xad8917c0 (LWP 20701)):
[KCrash Handler]
#7  0xb2ead29a in Akonadi::Tag::operator= (this=0xbfb60234, other=...) at ../../../../akonadi/src/core/tag.cpp:80
#8  0xb2ead3ff in Akonadi::Tag::Tag (this=0xbfb60234, other=...) at ../../../../akonadi/src/core/tag.cpp:72
#9  0xb2f4c537 in Akonadi::TagModelPrivate::tagForIndex (this=0x88b7900, index=...) at ../../../../akonadi/src/core/models/tagmodel_p.cpp:105
#10 0xb2f4b32c in Akonadi::TagModel::data (this=0x90509c8, index=..., role=2) at ../../../../akonadi/src/core/models/tagmodel.cpp:91
#11 0xb64568b7 in QAbstractProxyModel::data(QModelIndex const&, int) const () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#12 0xb1ad8d8d in KCheckableProxyModel::data (this=0x88be120, index=..., role=2) at ../../src/kcheckableproxymodel.cpp:89
#13 0xb6e8006d in ?? () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#14 0xb6e82d64 in ?? () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#15 0xb6e830ee in QComboBox::setCurrentIndex(int) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#16 0xb6e8492c in ?? () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#17 0xb64db0e1 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#18 0xb64db5dd in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#19 0xb65552b1 in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#20 0xb6450a6e in QAbstractItemModel::endInsertRows() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#21 0xb646a9b6 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#22 0xb64db0e1 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#23 0xb64db5dd in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#24 0xb65552b1 in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#25 0xb6450a6e in QAbstractItemModel::endInsertRows() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#26 0xb2f4cb59 in Akonadi::TagModelPrivate::monitoredTagAdded (this=0x88b7900, tag=...) at ../../../../akonadi/src/core/models/tagmodel_p.cpp:126
#27 0xb2f4cf8a in Akonadi::TagModelPrivate::tagsFetched (this=0x88b7900, tags=...) at ../../../../akonadi/src/core/models/tagmodel_p.cpp:223
#28 0xb2f4ab2e in Akonadi::TagModel::qt_static_metacall (_o=0x90509c8, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbfb60a84) at ./moc_tagmodel.cpp:102
#29 0xb64db0e1 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#30 0xb64db5dd in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#31 0xb2ef9f31 in Akonadi::TagFetchJob::tagsReceived (this=0x832eae8, _t1=...) at ./moc_tagfetchjob.cpp:145
#32 0xb2efb4fd in Akonadi::TagFetchJobPrivate::timeout (this=0x9095608) at ../../../../akonadi/src/core/jobs/tagfetchjob.cpp:58
#33 Akonadi::TagFetchJobPrivate::aboutToFinish (this=0x9095608) at ../../../../akonadi/src/core/jobs/tagfetchjob.cpp:49
#34 0xb2ee2956 in Akonadi::JobPrivate::delayedEmitResult (this=<optimized out>) at ../../../../akonadi/src/core/jobs/job.cpp:152
#35 Akonadi::Job::qt_static_metacall (_o=0x832eae8, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0x88dfa18) at ./moc_job.cpp:107
#36 0xb64d7f50 in QMetaCallEvent::placeMetaCall(QObject*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#37 0xb64dbd13 in QObject::event(QEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#38 0xb6d62daa in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#39 0xb6d6867f in QApplication::notify(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#40 0xb64a80ff in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#41 0xb64aa51d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#42 0xb64aaa57 in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#43 0xb65023d3 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#44 0xb26d6ce9 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#45 0xb26d6f89 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#46 0xb26d7054 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#47 0xb65027c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#48 0xad4debc1 in ?? () from /usr/lib/i386-linux-gnu/qt5/plugins/platforms/libqxcb.so
#49 0xb64a52b3 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#50 0xb64a5702 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#51 0xb64ad7e5 in QCoreApplication::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#52 0xb67b3cf1 in QGuiApplication::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Gui.so.5
#53 0xb6d5ecb4 in QApplication::exec() () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#54 0x0804bd22 in main (argc=1, argv=0xbfb61274) at ../../../kontact/src/main.cpp:220

Possible duplicates by query: bug 354728, bug 353797, bug 353482, bug 353326.

Reported using DrKonqi