Application: kontact (5.2.3)

Qt Version: 5.6.1
Frameworks Version: 5.24.0
Operating System: Linux 4.7.0-2-default x86_64
Distribution: "openSUSE Tumbleweed (20160813) (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:

I've being moving a folder of emails (containing a non-empty subfolder) by using the popup menu "move folder". I've tried two more times and it crashes each time.

- Unusual behavior I noticed:

Kmail/Kontact crashes immediately.

- Custom settings of the application:

My mail folders and email collection is rather large and came from various previous installs and exports/imports. Some of these exports/imports might not have been completed properly, i.e. the Akonadi representation of the data might not be fully correct. Nevertheless, I wouldn't expect a crash.

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f22b56f4900 (LWP 5503))]

Thread 28 (Thread 0x7f21d9db7700 (LWP 5573)):
#0  0x00007f22b2ba0409 in QMutex::unlock() () at /usr/lib64/libQt5Core.so.5
#1  0x00007f22b2dd5191 in  () at /usr/lib64/libQt5Core.so.5
#2  0x00007f22aac1e5a9 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22aac1ef7b in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 27 (Thread 0x7f21da5b8700 (LWP 5567)):
#0  0x00007f22b2293a1d in poll () at /lib64/libc.so.6
#1  0x00007f22aac1f056 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 26 (Thread 0x7f21dbfff700 (LWP 5551)):
#0  0x00007f22b22939f0 in poll () at /lib64/libc.so.6
#1  0x00007f22aac1f056 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 25 (Thread 0x7f21e8f89700 (LWP 5549)):
#0  0x00007f22b2293a1d in poll () at /lib64/libc.so.6
#1  0x00007f22aac1f056 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 24 (Thread 0x7f21e978a700 (LWP 5547)):
#0  0x00007f22b2293a1d in poll () at /lib64/libc.so.6
#1  0x00007f22aac1f056 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 23 (Thread 0x7f21eadda700 (LWP 5537)):
#0  0x00007f22b2293a1d in poll () at /lib64/libc.so.6
#1  0x00007f22aac1f056 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 22 (Thread 0x7f21eb5db700 (LWP 5535)):
#0  0x00007f22b2293a1d in poll () at /lib64/libc.so.6
#1  0x00007f22aac1f056 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 21 (Thread 0x7f2204ed9700 (LWP 5532)):
#0  0x00007f22b2293a1d in poll () at /lib64/libc.so.6
#1  0x00007f22aac1f056 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 20 (Thread 0x7f22056da700 (LWP 5530)):
#0  0x00007f22b2293a1d in poll () at /lib64/libc.so.6
#1  0x00007f22aac1f056 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7f2205edb700 (LWP 5528)):
#0  0x00007f22b2c53d96 in  () at /usr/lib64/libQt5Core.so.5
#1  0x00007f22b2dd3699 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#2  0x00007f22b2dd3c45 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f22b2dd4fde in  () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22aac1e5a9 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f22aac1ef7b in  () at /usr/lib64/libglib-2.0.so.0
#6  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#7  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#10 0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#11 0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#12 0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7f22077fe700 (LWP 5526)):
#0  0x00007f22b2293a1d in poll () at /lib64/libc.so.6
#1  0x00007f22aac1f056 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7f2207fff700 (LWP 5524)):
#0  0x00007f22b2293a1d in poll () at /lib64/libc.so.6
#1  0x00007f22aac1f056 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7f2214ea2700 (LWP 5521)):
#0  0x00007f22b2293a1d in poll () at /lib64/libc.so.6
#1  0x00007f22aac1f056 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7f22158c1700 (LWP 5519)):
#0  0x00007f22aac630c4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f22aac1ef6e in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7f22160c2700 (LWP 5517)):
#0  0x00007f22b5558a08 in __tls_get_addr () at /lib64/ld-linux-x86-64.so.2
#1  0x00007f22b2ba7176 in  () at /usr/lib64/libQt5Core.so.5
#2  0x00007f22b2dd515a in  () at /usr/lib64/libQt5Core.so.5
#3  0x00007f22aac1e5a9 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f22aac1ef7b in  () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#6  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#9  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f22168c3700 (LWP 5515)):
#0  0x00007f22b228fa7d in read () at /lib64/libc.so.6
#1  0x00007f22aac61d00 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1eb26 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22aac1eff4 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f222b7fe700 (LWP 5514)):
#0  0x00007f22ab44809f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f22af893163 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f22afbc9781 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f222bfff700 (LWP 5513)):
#0  0x00007f22ab44809f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f22af893163 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f22afbc9781 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f223ce13700 (LWP 5512)):
#0  0x00007f22ab44809f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f22af893163 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f22afbc9781 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f223d614700 (LWP 5511)):
#0  0x00007f22ab44809f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f22af893163 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f22afbc9781 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f223de15700 (LWP 5510)):
#0  0x00007f22ab44809f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f22af893163 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f22afbc9781 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f223e616700 (LWP 5509)):
#0  0x00007f22ab44809f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f22af893163 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f22afbc9781 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f223ee17700 (LWP 5508)):
#0  0x00007f22ab44809f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f22af892011 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f22afbc9781 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f2245a96700 (LWP 5507)):
#0  0x00007f22aac630c4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f22aac1e8a9 in g_main_context_query () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1efc8 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f228edee700 (LWP 5506)):
#0  0x00007f22ab44809f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f22afb98a6b in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f22afb98aa9 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f228ffff700 (LWP 5505)):
#0  0x00007f22b2293a1d in poll () at /lib64/libc.so.6
#1  0x00007f22aac1f056 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f22b2dd5aeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22b2ba33b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f22b14b39b5 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f22982cb700 (LWP 5504)):
#0  0x00007f22b2293a1d in poll () at /lib64/libc.so.6
#1  0x00007f22ab868410 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f22ab86a1a9 in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f229a6317b9 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f22b2ba82d8 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f22ab442474 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f22b229c3ed in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f22b56f4900 (LWP 5503)):
[KCrash Handler]
#6  0x00007f22b2d46de8 in QSortFilterProxyModel::parent(QModelIndex const&) const () at /usr/lib64/libQt5Core.so.5
#7  0x00007f22b2d3da32 in QIdentityProxyModel::parent(QModelIndex const&) const () at /usr/lib64/libQt5Core.so.5
#8  0x00007f22b2d3da32 in QIdentityProxyModel::parent(QModelIndex const&) const () at /usr/lib64/libQt5Core.so.5
#9  0x00007f22b18d2ece in Akonadi::StatisticsProxyModel::parent(QModelIndex const&) const () at /usr/lib64/libKF5AkonadiCore.so.5
#10 0x00007f22b2d4835b in  () at /usr/lib64/libQt5Core.so.5
#11 0x00007f22b2d487c5 in  () at /usr/lib64/libQt5Core.so.5
#12 0x00007f22b2d4debb in  () at /usr/lib64/libQt5Core.so.5
#13 0x00007f22b2dad1a9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#14 0x00007f22b2e26d66 in QAbstractItemModel::layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () at /usr/lib64/libQt5Core.so.5
#15 0x00007f22b2d404a5 in  () at /usr/lib64/libQt5Core.so.5
#16 0x00007f22b2d40bb3 in  () at /usr/lib64/libQt5Core.so.5
#17 0x00007f22b2dad1a9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#18 0x00007f22b2e26d66 in QAbstractItemModel::layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () at /usr/lib64/libQt5Core.so.5
#19 0x00007f22b2d404a5 in  () at /usr/lib64/libQt5Core.so.5
#20 0x00007f22b2d40bb3 in  () at /usr/lib64/libQt5Core.so.5
#21 0x00007f22b2dad1a9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#22 0x00007f22b2e26d66 in QAbstractItemModel::layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () at /usr/lib64/libQt5Core.so.5
#23 0x00007f22b2d48c04 in  () at /usr/lib64/libQt5Core.so.5
#24 0x00007f22b2d4ddf4 in  () at /usr/lib64/libQt5Core.so.5
#25 0x00007f22b2dad1a9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#26 0x00007f22b2e272a2 in QAbstractItemModel::rowsMoved(QModelIndex const&, int, int, QModelIndex const&, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#27 0x00007f22b2d26640 in QAbstractItemModel::endMoveRows() () at /usr/lib64/libQt5Core.so.5
#28 0x00007f22b18bfca9 in Akonadi::EntityTreeModelPrivate::monitoredCollectionMoved(Akonadi::Collection const&, Akonadi::Collection const&, Akonadi::Collection const&) () at /usr/lib64/libKF5AkonadiCore.so.5
#29 0x00007f22b2dad1a9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#30 0x00007f22b17fb8cf in Akonadi::Monitor::collectionMoved(Akonadi::Collection const&, Akonadi::Collection const&, Akonadi::Collection const&) () at /usr/lib64/libKF5AkonadiCore.so.5
#31 0x00007f22b1801fdf in Akonadi::MonitorPrivate::emitCollectionNotification(Akonadi::Protocol::ChangeNotification const&, Akonadi::Collection const&, Akonadi::Collection const&, Akonadi::Collection const&) () at /usr/lib64/libKF5AkonadiCore.so.5
#32 0x00007f22b18085f7 in Akonadi::MonitorPrivate::emitNotification(Akonadi::Protocol::ChangeNotification const&) () at /usr/lib64/libKF5AkonadiCore.so.5
#33 0x00007f22b17b525e in Akonadi::ChangeRecorderPrivate::emitNotification(Akonadi::Protocol::ChangeNotification const&) () at /usr/lib64/libKF5AkonadiCore.so.5
#34 0x00007f22b180530a in Akonadi::MonitorPrivate::flushPipeline() () at /usr/lib64/libKF5AkonadiCore.so.5
#35 0x00007f22b1805589 in Akonadi::MonitorPrivate::dataAvailable() () at /usr/lib64/libKF5AkonadiCore.so.5
#36 0x00007f22b2dad1a9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#37 0x00007f22b17aca7d in  () at /usr/lib64/libKF5AkonadiCore.so.5
#38 0x00007f22b17de404 in  () at /usr/lib64/libKF5AkonadiCore.so.5
#39 0x00007f22b2dad1a9 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#40 0x00007f22b447e072 in KJob::result(KJob*, KJob::QPrivateSignal) () at /usr/lib64/libKF5CoreAddons.so.5
#41 0x00007f22b447f9b1 in KJob::finishJob(bool) () at /usr/lib64/libKF5CoreAddons.so.5
#42 0x00007f22b1874239 in  () at /usr/lib64/libKF5AkonadiCore.so.5
#43 0x00007f22b2dadcf9 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#44 0x00007f22b3d16aec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#45 0x00007f22b3d1bf8f in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#46 0x00007f22b2d7fa20 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#47 0x00007f22b2d8199c in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#48 0x00007f22b2dd56c3 in  () at /usr/lib64/libQt5Core.so.5
#49 0x00007f22aac1ee57 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#50 0x00007f22aac1f0c0 in  () at /usr/lib64/libglib-2.0.so.0
#51 0x00007f22aac1f16c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#52 0x00007f22b2dd5acf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#53 0x00007f22b2d7d76a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#54 0x00007f22b2d85f6c in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#55 0x000000000040474f in  ()
#56 0x00007f22b21d4741 in __libc_start_main () at /lib64/libc.so.6
#57 0x0000000000404c59 in _start ()

Reported using DrKonqi