Application: kmail (5.0.3)

Qt Version: 5.5.1
Operating System: Linux 4.1.4-1-CHAKRA x86_64
Distribution: "Chakra"

-- Information about the crash:
- What I was doing when the application crashed: I was reorganizing the folders in an IMAP account (using the drag and drop/move here) and sometimes, Kmail crashed.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f16cfc47840 (LWP 1373))]

Thread 8 (Thread 0x7f16ce894700 (LWP 1374)):
#0  0x00007f16f08dc18d in poll () at /usr/lib/libc.so.6
#1  0x00007f16e49fe9f2 in  () at /usr/lib/libxcb.so.1
#2  0x00007f16e4a0056f in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f16cf988329 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f16f11ddb7e in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f16e7431464 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f16f08e512d in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f16c668f700 (LWP 1384)):
#0  0x00007f16e5947fc4 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f16e5903c99 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f16e5903dbc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f16f14155ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f16f13bc5ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f16f11d8bd4 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f16f11ddb7e in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f16e7431464 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f16f08e512d in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f16c5e37700 (LWP 1385)):
#0  0x00007f16e743703f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f16e2e94deb in  () at /usr/lib/libQt5WebKit.so.5
#2  0x00007f16e2e94e29 in  () at /usr/lib/libQt5WebKit.so.5
#3  0x00007f16e7431464 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f16f08e512d in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f167fffd700 (LWP 1392)):
#0  0x00007f16e743703f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f16e2ba1bb4 in  () at /usr/lib/libQt5WebKit.so.5
#2  0x00007f16e2ec4c61 in  () at /usr/lib/libQt5WebKit.so.5
#3  0x00007f16e7431464 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f16f08e512d in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f167f7fc700 (LWP 1393)):
#0  0x00007f16e743703f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f16e2ba2be3 in  () at /usr/lib/libQt5WebKit.so.5
#2  0x00007f16e2ec4c61 in  () at /usr/lib/libQt5WebKit.so.5
#3  0x00007f16e7431464 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f16f08e512d in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f167effb700 (LWP 1394)):
#0  0x00007f16e743703f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f16e2ba2be3 in  () at /usr/lib/libQt5WebKit.so.5
#2  0x00007f16e2ec4c61 in  () at /usr/lib/libQt5WebKit.so.5
#3  0x00007f16e7431464 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f16f08e512d in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f167e7fa700 (LWP 1395)):
#0  0x00007f16e743703f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f16e2ba2be3 in  () at /usr/lib/libQt5WebKit.so.5
#2  0x00007f16e2ec4c61 in  () at /usr/lib/libQt5WebKit.so.5
#3  0x00007f16e7431464 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f16f08e512d in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f16cfc47840 (LWP 1373)):
[KCrash Handler]
#6  0x00007f16f13895e8 in QSortFilterProxyModel::parent(QModelIndex const&) const () at /usr/lib/libQt5Core.so.5
#7  0x00007f16f137fbb2 in QIdentityProxyModel::parent(QModelIndex const&) const () at /usr/lib/libQt5Core.so.5
#8  0x00007f16f137fbb2 in QIdentityProxyModel::parent(QModelIndex const&) const () at /usr/lib/libQt5Core.so.5
#9  0x00007f16ef60795e in Akonadi::StatisticsProxyModel::parent(QModelIndex const&) const () at /usr/lib/libKF5AkonadiCore.so.5
#10 0x00007f16f138a79b in  () at /usr/lib/libQt5Core.so.5
#11 0x00007f16f138ab2e in  () at /usr/lib/libQt5Core.so.5
#12 0x00007f16f138ff7b in  () at /usr/lib/libQt5Core.so.5
#13 0x00007f16f13ed36a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#14 0x00007f16f1469f56 in QAbstractItemModel::layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () at /usr/lib/libQt5Core.so.5
#15 0x00007f16f1382761 in  () at /usr/lib/libQt5Core.so.5
#16 0x00007f16f1382d23 in  () at /usr/lib/libQt5Core.so.5
#17 0x00007f16f13ed36a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#18 0x00007f16f1469f56 in QAbstractItemModel::layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () at /usr/lib/libQt5Core.so.5
#19 0x00007f16f1382761 in  () at /usr/lib/libQt5Core.so.5
#20 0x00007f16f1382d23 in  () at /usr/lib/libQt5Core.so.5
#21 0x00007f16f13ed36a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#22 0x00007f16f1469f56 in QAbstractItemModel::layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () at /usr/lib/libQt5Core.so.5
#23 0x00007f16f138af10 in  () at /usr/lib/libQt5Core.so.5
#24 0x00007f16f138feb4 in  () at /usr/lib/libQt5Core.so.5
#25 0x00007f16f13ed36a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#26 0x00007f16f146a492 in QAbstractItemModel::rowsMoved(QModelIndex const&, int, int, QModelIndex const&, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#27 0x00007f16f1367582 in QAbstractItemModel::endMoveRows() () at /usr/lib/libQt5Core.so.5
#28 0x00007f16ef5f596f in Akonadi::EntityTreeModelPrivate::monitoredCollectionMoved(Akonadi::Collection const&, Akonadi::Collection const&, Akonadi::Collection const&) () at /usr/lib/libKF5AkonadiCore.so.5
#29 0x00007f16f13ed36a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#30 0x00007f16ef537edf in Akonadi::Monitor::collectionMoved(Akonadi::Collection const&, Akonadi::Collection const&, Akonadi::Collection const&) () at /usr/lib/libKF5AkonadiCore.so.5
#31 0x00007f16ef53e182 in Akonadi::MonitorPrivate::emitCollectionNotification(Akonadi::Protocol::ChangeNotification const&, Akonadi::Collection const&, Akonadi::Collection const&, Akonadi::Collection const&) () at /usr/lib/libKF5AkonadiCore.so.5
#32 0x00007f16ef546060 in Akonadi::MonitorPrivate::emitNotification(Akonadi::Protocol::ChangeNotification const&) () at /usr/lib/libKF5AkonadiCore.so.5
#33 0x00007f16ef50096e in Akonadi::ChangeRecorderPrivate::emitNotification(Akonadi::Protocol::ChangeNotification const&) () at /usr/lib/libKF5AkonadiCore.so.5
#34 0x00007f16ef54417c in Akonadi::MonitorPrivate::flushPipeline() () at /usr/lib/libKF5AkonadiCore.so.5
#35 0x00007f16ef544419 in Akonadi::MonitorPrivate::dataAvailable() () at /usr/lib/libKF5AkonadiCore.so.5
#36 0x00007f16f13ed36a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#37 0x00007f16ef4f80ef in  () at /usr/lib/libKF5AkonadiCore.so.5
#38 0x00007f16ef51c3d4 in  () at /usr/lib/libKF5AkonadiCore.so.5
#39 0x00007f16f13ed36a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#40 0x00007f16f242a3f2 in KJob::result(KJob*, KJob::QPrivateSignal) () at /usr/lib/libKF5CoreAddons.so.5
#41 0x00007f16f242afb1 in KJob::finishJob(bool) () at /usr/lib/libKF5CoreAddons.so.5
#42 0x00007f16ef5aa213 in  () at /usr/lib/libKF5AkonadiCore.so.5
#43 0x00007f16f13ee231 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#44 0x00007f16f1caf98c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#45 0x00007f16f1cb4e66 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#46 0x00007f16f13bebeb in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#47 0x00007f16f13c0fe6 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#48 0x00007f16f1415183 in  () at /usr/lib/libQt5Core.so.5
#49 0x00007f16e5903a1d in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#50 0x00007f16e5903d08 in  () at /usr/lib/libglib-2.0.so.0
#51 0x00007f16e5903dbc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#52 0x00007f16f141558f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#53 0x00007f16f13bc5ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#54 0x00007f16f13c457c in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#55 0x00000000004040f0 in main ()

Reported using DrKonqi