Application: kontact (5.2.3)

Qt Version: 5.7.1
Frameworks Version: 5.31.0
Operating System: Linux 4.10.0-35-generic x86_64
Distribution: Ubuntu 17.04

-- Information about the crash:
- What I was doing when the application crashed:
This happens the first time I compose e-mail after logging in or a reboot and attempt to choose a recipient from my contacts.  Kontact crashes when I click the "Select..." button in the e-mail composition dialog.

When I restart Kontact and compose a new e-mail message, it doesn't crash when I select the recipient from my contacts.

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa74b2ea100 (LWP 2824))]

Thread 33 (Thread 0x7fa64d85a700 (LWP 17117)):
#0  0x00007ffefc08da01 in clock_gettime ()
#1  0x00007fa747fd7506 in __GI___clock_gettime (clock_id=1, tp=0x7fa64d8599e0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fa748977c41 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fa748af3d39 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa748af42e5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa748af568e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa73f3f6a6d in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fa73f3f749b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fa7411c56da in start_thread (arg=0x7fa64d85a700) at pthread_create.c:456
#14 0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 32 (Thread 0x7fa64c858700 (LWP 17115)):
#0  0x00007fa747fbcd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa73f3f7576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7411c56da in start_thread (arg=0x7fa64c858700) at pthread_create.c:456
#8  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 31 (Thread 0x7fa64f7fe700 (LWP 23015)):
#0  0x00007fa747fbcd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa73f3f7576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7411c56da in start_thread (arg=0x7fa64f7fe700) at pthread_create.c:456
#8  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 30 (Thread 0x7fa64ffff700 (LWP 23013)):
#0  0x00007fa73f43cef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa73f3f64be in g_main_context_acquire () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f7425 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7411c56da in start_thread (arg=0x7fa64ffff700) at pthread_create.c:456
#9  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 29 (Thread 0x7fa660e79700 (LWP 23011)):
#0  0x00007fa73f43cef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa73f3f710a in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f75e0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7411c56da in start_thread (arg=0x7fa660e79700) at pthread_create.c:456
#9  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 28 (Thread 0x7fa6637fe700 (LWP 2991)):
#0  0x00007fa73f43ced9 in g_mutex_lock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa73f3f6a79 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f749b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7411c56da in start_thread (arg=0x7fa6637fe700) at pthread_create.c:456
#9  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 27 (Thread 0x7fa663fff700 (LWP 2882)):
#0  0x00007fa73f43bb00 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa73f3f7042 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f7514 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7411c56da in start_thread (arg=0x7fa663fff700) at pthread_create.c:456
#9  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 26 (Thread 0x7fa678dea700 (LWP 2880)):
#0  0x00007fa747fbcd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa73f3f7576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7411c56da in start_thread (arg=0x7fa678dea700) at pthread_create.c:456
#8  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 25 (Thread 0x7fa679ffb700 (LWP 2877)):
#0  0x00007fa747fd6d70 in __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:59
#1  0x00007fa747fbcd82 in poll () at ../sysdeps/unix/syscall-template.S:84
#2  0x00007fa73f3f7576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7411c56da in start_thread (arg=0x7fa679ffb700) at pthread_create.c:456
#9  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 24 (Thread 0x7fa67a7fc700 (LWP 2875)):
#0  0x00007fa73f43ced0 in g_mutex_lock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa73f3f6ce1 in g_main_context_query () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f74e8 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7411c56da in start_thread (arg=0x7fa67a7fc700) at pthread_create.c:456
#9  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 23 (Thread 0x7fa67affd700 (LWP 2873)):
#0  0x00007fa73f43ced9 in g_mutex_lock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa73f3f70f6 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f75e0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7411c56da in start_thread (arg=0x7fa67affd700) at pthread_create.c:456
#9  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 22 (Thread 0x7fa67b7fe700 (LWP 2871)):
#0  0x00007fa747fbcd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa73f3f7576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7411c56da in start_thread (arg=0x7fa67b7fe700) at pthread_create.c:456
#8  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 21 (Thread 0x7fa67bfff700 (LWP 2869)):
#0  0x00007fa748af42e0 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fa748af568e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fa73f3f6a6d in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa73f3f749b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa7411c56da in start_thread (arg=0x7fa67bfff700) at pthread_create.c:456
#10 0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 20 (Thread 0x7fa694fb5700 (LWP 2867)):
#0  0x00007fa747fbcd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa73f3f7576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7411c56da in start_thread (arg=0x7fa694fb5700) at pthread_create.c:456
#8  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 19 (Thread 0x7fa6957b6700 (LWP 2865)):
#0  0x00007fa7488d1b8b in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fa748af580a in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fa73f3f6a6d in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa73f3f749b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa7411c56da in start_thread (arg=0x7fa6957b6700) at pthread_create.c:456
#10 0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 18 (Thread 0x7fa696ffd700 (LWP 2863)):
#0  0x00007fa73f43cef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa73f3f6a60 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f749b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7411c56da in start_thread (arg=0x7fa696ffd700) at pthread_create.c:456
#9  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 17 (Thread 0x7fa6977fe700 (LWP 2861)):
#0  0x00007fa747fd6d8f in __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:67
#1  0x00007fa747fb88a2 in read () at ../sysdeps/unix/syscall-template.S:84
#2  0x00007fa73f43bb30 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa73f3f7042 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa73f3f7514 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fa7411c56da in start_thread (arg=0x7fa6977fe700) at pthread_create.c:456
#11 0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 16 (Thread 0x7fa697fff700 (LWP 2859)):
#0  0x00007fa73f3f6a3c in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa73f3f749b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7411c56da in start_thread (arg=0x7fa697fff700) at pthread_create.c:456
#8  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 15 (Thread 0x7fa6a1248700 (LWP 2857)):
#0  0x00007fa73f43cef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa73f3f756a in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7411c56da in start_thread (arg=0x7fa6a1248700) at pthread_create.c:456
#8  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 14 (Thread 0x7fa6a1a49700 (LWP 2855)):
#0  0x00007fa747fbcd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa73f3f7576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7411c56da in start_thread (arg=0x7fa6a1a49700) at pthread_create.c:456
#8  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 13 (Thread 0x7fa6b100f700 (LWP 2843)):
#0  0x00007fa747fbcd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa73f3f7576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7411c56da in start_thread (arg=0x7fa6b100f700) at pthread_create.c:456
#8  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 12 (Thread 0x7fa6b2ffd700 (LWP 2841)):
#0  0x00007fa747fbcd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa73f3f7576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7411c56da in start_thread (arg=0x7fa6b2ffd700) at pthread_create.c:456
#8  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7fa6b37fe700 (LWP 2839)):
#0  0x00007fa74b1e3fc5 in __GI___tls_get_addr (ti=0x7fa748eea660) at dl-tls.c:834
#1  0x00007fa7488d1ac6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fa748af580a in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fa73f3f6a6d in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa73f3f749b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fa7411c56da in start_thread (arg=0x7fa6b37fe700) at pthread_create.c:456
#11 0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7fa6b3fff700 (LWP 2837)):
#0  0x00007fa73f3f6a60 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa73f3f749b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7411c56da in start_thread (arg=0x7fa6b3fff700) at pthread_create.c:456
#8  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7fa6b8c10700 (LWP 2835)):
#0  0x00007fa73f43cef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa73f3f6f81 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f7514 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7411c56da in start_thread (arg=0x7fa6b8c10700) at pthread_create.c:456
#9  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7fa6d25f4700 (LWP 2833)):
#0  0x00007fa7411cb510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa7455c48d3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa7458ec641 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa7411c56da in start_thread (arg=0x7fa6d25f4700) at pthread_create.c:456
#4  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7fa6d2df5700 (LWP 2832)):
#0  0x00007fa7411cb510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa7455c48d3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa7458ec641 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa7411c56da in start_thread (arg=0x7fa6d2df5700) at pthread_create.c:456
#4  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7fa6d35f6700 (LWP 2831)):
#0  0x00007fa7411cb510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa7455c48d3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa7458ec641 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa7411c56da in start_thread (arg=0x7fa6d35f6700) at pthread_create.c:456
#4  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7fa6d3df7700 (LWP 2830)):
#0  0x00007fa7411cb510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa7455c37b1 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa7458ec641 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa7411c56da in start_thread (arg=0x7fa6d3df7700) at pthread_create.c:456
#4  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7fa6daa6b700 (LWP 2829)):
#0  0x00007fa747fb88ad in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa73f43bb30 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f7042 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa73f3f7514 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa7411c56da in start_thread (arg=0x7fa6daa6b700) at pthread_create.c:456
#10 0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7fa722957700 (LWP 2828)):
#0  0x00007fa7411cb510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa7458bb94b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa7458bb989 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa7411c56da in start_thread (arg=0x7fa722957700) at pthread_create.c:456
#4  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7fa723b68700 (LWP 2826)):
#0  0x00007fa73f3f6a74 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa73f3f749b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa748af60bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa7488cdf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa7471c35d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fa7488d2c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa7411c56da in start_thread (arg=0x7fa723b68700) at pthread_create.c:456
#9  0x00007fa747fc8d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7fa74b2ea100 (LWP 2824)):
[KCrash Handler]
#6  0x00007fa748a688e8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa748a6e8e0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa748a704a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa748acd789 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fa748b4447c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fa748a6e832 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fa748a704a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fa748acd789 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fa748b4447c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fa7475be57f in Akonadi::EntityTreeModelPrivate::dataChanged(QModelIndex const&, QModelIndex const&) () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5
#16 0x00007fa7475c1ac8 in Akonadi::EntityTreeModelPrivate::itemFetchJobDone(KJob*) () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5
#17 0x00007fa748acd789 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fa74a10b3d2 in KJob::result(KJob*, KJob::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#19 0x00007fa74a10cd11 in KJob::finishJob(bool) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#20 0x00007fa74757cbc9 in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5
#21 0x00007fa748ace639 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fa7499c835c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007fa7499cfb21 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007fa748aa1c00 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fa748aa439d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fa748af5c93 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007fa73f3f7377 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007fa73f3f75e0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007fa73f3f768c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007fa748af609f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007fa748a9fbea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007fa748aa833c in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x0000560e35fd42bf in  ()
#34 0x00007fa747ee03f1 in __libc_start_main (main=0x560e35fd3320, argc=1, argv=0x7ffefc0164b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffefc0164a8) at ../csu/libc-start.c:291
#35 0x0000560e35fd47ca in _start ()

Reported using DrKonqi