Application: kontact (5.2.3)

Qt Version: 5.6.1
Frameworks Version: 5.26.0
Operating System: Linux 4.7.0-1-amd64 x86_64
Distribution: Debian GNU/Linux testing (stretch)

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

Step 1: create toplevel task
Step 2: create sublevel 1 task under the toplevel task
Step 3+4: create 2 sublevel 2 tasks (2a, 2b) under sublevel 1 task
Step 5: delete sublevel 1 task and confirm "Delete only this" --> result is only toplevel task shown
Step 6: Undo and Redo a few times --> crash (sometimes after first redo, sometimes after a circle of a few undos and redos)

Also works with deleting toplevel task in the same way and following Step 6.

- Unusual behavior I noticed:
1) Step 5: deletes sublevel 1 AND all sublevel 2 although "Delete only this" was selected
2) Bug 371242

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 0x7f79d542af00 (LWP 2683))]

Thread 33 (Thread 0x7f78e0dd9700 (LWP 2809)):
#0  g_mutex_unlock (mutex=0x7f78fc00c2f0) at ././glib/gthread-posix.c:1348
#1  0x00007f79e552492e in g_main_context_acquire (context=0x7f78fc00c2f0) at ././glib/gmain.c:3283
#2  0x00007f79e5525885 in g_main_context_iterate (context=context@entry=0x7f78fc00c2f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3879
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f78fc00c2f0, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f78e0dd9700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 32 (Thread 0x7f78e2194700 (LWP 2801)):
#0  0x00007f79e556b029 in g_mutex_lock (mutex=mutex@entry=0x7f78e8002300) at ././glib/gthread-posix.c:1336
#1  0x00007f79e5524ee5 in g_main_context_prepare (context=context@entry=0x7f78e8002300, priority=priority@entry=0x7f78e2193b80) at ././glib/gmain.c:3504
#2  0x00007f79e55258fb in g_main_context_iterate (context=context@entry=0x7f78e8002300, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f78e8002300, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f78e2194700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 31 (Thread 0x7f7902a67700 (LWP 2771)):
#0  0x00007f79e556b025 in g_mutex_lock (mutex=mutex@entry=0x7f78f8000990) at ././glib/gthread-posix.c:1336
#1  0x00007f79e5525556 in g_main_context_dispatch (context=context@entry=0x7f78f8000990) at ././glib/gmain.c:3850
#2  0x00007f79e5525a40 in g_main_context_iterate (context=context@entry=0x7f78f8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3929
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f78f8000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f7902a67700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 30 (Thread 0x7f791c9aa700 (LWP 2752)):
#0  0x00007f79ec924a0e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f79e5524ed9 in g_main_context_prepare (context=context@entry=0x7f78fc000990, priority=priority@entry=0x7f791c9a9b80) at ././glib/gmain.c:3501
#2  0x00007f79e55258fb in g_main_context_iterate (context=context@entry=0x7f78fc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f78fc000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f791c9aa700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 29 (Thread 0x7f791d1ab700 (LWP 2750)):
#0  0x00007f79ebdf350d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f79e55259d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f7908002e20, timeout=<optimized out>, context=0x7f7908000990) at ././glib/gmain.c:4228
#2  g_main_context_iterate (context=context@entry=0x7f7908000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7908000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f791d1ab700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 28 (Thread 0x7f791d9ac700 (LWP 2748)):
#0  g_mutex_unlock (mutex=0x7f7904000990) at ././glib/gthread-posix.c:1348
#1  0x00007f79e552598a in g_main_context_iterate (context=context@entry=0x7f7904000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3931
#2  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7904000990, may_block=1) at ././glib/gmain.c:3990
#3  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79e5d4d464 in start_thread (arg=0x7f791d9ac700) at pthread_create.c:333
#8  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 27 (Thread 0x7f791effd700 (LWP 2726)):
#0  0x00007f79e556b029 in g_mutex_lock (mutex=mutex@entry=0x7f7910000990) at ././glib/gthread-posix.c:1336
#1  0x00007f79e55253d4 in g_main_context_check (context=context@entry=0x7f7910000990, max_priority=2147483647, fds=fds@entry=0x7f7910003220, n_fds=n_fds@entry=1) at ././glib/gmain.c:3766
#2  0x00007f79e5525974 in g_main_context_iterate (context=context@entry=0x7f7910000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7910000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f791effd700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 26 (Thread 0x7f791f7fe700 (LWP 2724)):
#0  0x00007f79e5524fd3 in g_main_context_prepare (context=<optimized out>, context@entry=0x7f790c000990, priority=priority@entry=0x7f791f7fdb80) at ././glib/gmain.c:3575
#1  0x00007f79e55258fb in g_main_context_iterate (context=context@entry=0x7f790c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#2  0x00007f79e5525aec in g_main_context_iteration (context=0x7f790c000990, may_block=1) at ././glib/gmain.c:3990
#3  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79e5d4d464 in start_thread (arg=0x7f791f7fe700) at pthread_create.c:333
#8  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 25 (Thread 0x7f791ffff700 (LWP 2722)):
#0  g_mutex_unlock (mutex=0x7f7914000990) at ././glib/gthread-posix.c:1348
#1  0x00007f79e5524ecc in g_main_context_prepare (context=context@entry=0x7f7914000990, priority=priority@entry=0x7f791fffeb80) at ././glib/gmain.c:3499
#2  0x00007f79e55258fb in g_main_context_iterate (context=context@entry=0x7f7914000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7914000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f791ffff700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 24 (Thread 0x7f7938e69700 (LWP 2720)):
#0  0x00007f79ebdf350d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f79e55259d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f7918003220, timeout=<optimized out>, context=0x7f7918000990) at ././glib/gmain.c:4228
#2  g_main_context_iterate (context=context@entry=0x7f7918000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7918000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f7938e69700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 23 (Thread 0x7f793966a700 (LWP 2718)):
#0  0x00007f79ec9249ad in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f79e5524ed9 in g_main_context_prepare (context=context@entry=0x7f7924000990, priority=priority@entry=0x7f7939669b80) at ././glib/gmain.c:3501
#2  0x00007f79e55258fb in g_main_context_iterate (context=context@entry=0x7f7924000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7924000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f793966a700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 22 (Thread 0x7f7939e6b700 (LWP 2716)):
#0  0x00007f79e556b029 in g_mutex_lock (mutex=mutex@entry=0x7f7920000990) at ././glib/gthread-posix.c:1336
#1  0x00007f79e55248c0 in g_main_context_acquire (context=0x7f7920000990) at ././glib/gmain.c:3264
#2  0x00007f79e5525885 in g_main_context_iterate (context=context@entry=0x7f7920000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3879
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7920000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f7939e6b700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 21 (Thread 0x7f793a66c700 (LWP 2714)):
#0  0x00007f79ebdef57d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f79e5569c80 in read (__nbytes=16, __buf=0x7f793a66baa0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7f79280027b0) at ././glib/gwakeup.c:210
#3  0x00007f79e5525485 in g_main_context_check (context=context@entry=0x7f792c000990, max_priority=2147483647, fds=fds@entry=0x7f792c003220, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#4  0x00007f79e5525974 in g_main_context_iterate (context=context@entry=0x7f792c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#5  0x00007f79e5525aec in g_main_context_iteration (context=0x7f792c000990, may_block=1) at ././glib/gmain.c:3990
#6  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f79e5d4d464 in start_thread (arg=0x7f793a66c700) at pthread_create.c:333
#11 0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 20 (Thread 0x7f793b7fe700 (LWP 2712)):
#0  0x00007f79ec7a3832 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f79ec9230c9 in QTimerInfoList::updateCurrentTime() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f79ec923675 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f79ec924a0e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f79e5524ed9 in g_main_context_prepare (context=context@entry=0x7f7928000990, priority=priority@entry=0x7f793b7fdb80) at ././glib/gmain.c:3501
#5  0x00007f79e55258fb in g_main_context_iterate (context=context@entry=0x7f7928000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#6  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7928000990, may_block=1) at ././glib/gmain.c:3990
#7  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f79e5d4d464 in start_thread (arg=0x7f793b7fe700) at pthread_create.c:333
#12 0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 19 (Thread 0x7f793bfff700 (LWP 2710)):
#0  0x00007f79e556b029 in g_mutex_lock (mutex=mutex@entry=0x7f7930000990) at ././glib/gthread-posix.c:1336
#1  0x00007f79e5525ad8 in g_main_context_iteration (context=0x7f7930000990, may_block=1) at ././glib/gmain.c:3989
#2  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79e5d4d464 in start_thread (arg=0x7f793bfff700) at pthread_create.c:333
#7  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 18 (Thread 0x7f79498e2700 (LWP 2708)):
#0  0x00007f79e5525104 in g_main_context_query (context=context@entry=0x7f7934000990, max_priority=2147483647, timeout=timeout@entry=0x7f79498e1b84, fds=fds@entry=0x7f7934003e50, n_fds=n_fds@entry=2) at ././glib/gmain.c:3601
#1  0x00007f79e5525948 in g_main_context_iterate (context=context@entry=0x7f7934000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3911
#2  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7934000990, may_block=1) at ././glib/gmain.c:3990
#3  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79e5d4d464 in start_thread (arg=0x7f79498e2700) at pthread_create.c:333
#8  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 17 (Thread 0x7f794a0e3700 (LWP 2706)):
#0  0x00007f79e556b029 in g_mutex_lock (mutex=mutex@entry=0x7f7940000990) at ././glib/gthread-posix.c:1336
#1  0x00007f79e55258d0 in g_main_context_iterate (context=context@entry=0x7f7940000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3896
#2  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7940000990, may_block=1) at ././glib/gmain.c:3990
#3  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79e5d4d464 in start_thread (arg=0x7f794a0e3700) at pthread_create.c:333
#8  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 16 (Thread 0x7f794a8e4700 (LWP 2704)):
#0  0x00007f79ebdf350d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f79e55259d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f793c003220, timeout=<optimized out>, context=0x7f793c000990) at ././glib/gmain.c:4228
#2  g_main_context_iterate (context=context@entry=0x7f793c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f793c000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f794a8e4700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 15 (Thread 0x7f794bfff700 (LWP 2702)):
#0  0x00007f79e556b029 in g_mutex_lock (mutex=mutex@entry=0x7f7944000990) at ././glib/gthread-posix.c:1336
#1  0x00007f79e5524ee5 in g_main_context_prepare (context=context@entry=0x7f7944000990, priority=priority@entry=0x7f794bffeb80) at ././glib/gmain.c:3504
#2  0x00007f79e55258fb in g_main_context_iterate (context=context@entry=0x7f7944000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7944000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f794bfff700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 14 (Thread 0x7f7960cf2700 (LWP 2700)):
#0  0x00007f79e5525937 in g_main_context_iterate (context=context@entry=0x7f7950000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3911
#1  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7950000990, may_block=1) at ././glib/gmain.c:3990
#2  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79e5d4d464 in start_thread (arg=0x7f7960cf2700) at pthread_create.c:333
#7  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 13 (Thread 0x7f7961933700 (LWP 2698)):
#0  g_mutex_unlock (mutex=0x7f794c000990) at ././glib/gthread-posix.c:1348
#1  0x00007f79e55253c1 in g_main_context_check (context=context@entry=0x7f794c000990, max_priority=2147483647, fds=fds@entry=0x7f794c003220, n_fds=n_fds@entry=1) at ././glib/gmain.c:3760
#2  0x00007f79e5525974 in g_main_context_iterate (context=context@entry=0x7f794c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f794c000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f7961933700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 12 (Thread 0x7f7962352700 (LWP 2696)):
#0  0x00007f79ebdf350d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f79e55259d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f7958002e20, timeout=<optimized out>, context=0x7f7958000990) at ././glib/gmain.c:4228
#2  g_main_context_iterate (context=context@entry=0x7f7958000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7958000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79e5d4d464 in start_thread (arg=0x7f7962352700) at pthread_create.c:333
#9  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7f7962b53700 (LWP 2694)):
#0  0x00007f79ebdef581 in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f79e5569c80 in read (__nbytes=16, __buf=0x7f7962b52aa0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7f795c002780) at ././glib/gwakeup.c:210
#3  0x00007f79e5525485 in g_main_context_check (context=context@entry=0x7f7954000990, max_priority=2147483647, fds=fds@entry=0x7f7954003020, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#4  0x00007f79e5525974 in g_main_context_iterate (context=context@entry=0x7f7954000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#5  0x00007f79e5525aec in g_main_context_iteration (context=0x7f7954000990, may_block=1) at ././glib/gmain.c:3990
#6  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f79e5d4d464 in start_thread (arg=0x7f7962b53700) at pthread_create.c:333
#11 0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7f7963354700 (LWP 2692)):
#0  0x00007f79ebdef57d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f79e5569c80 in read (__nbytes=16, __buf=0x7f7963353aa0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x7f797c002390) at ././glib/gwakeup.c:210
#3  0x00007f79e5525485 in g_main_context_check (context=context@entry=0x7f795c000990, max_priority=2147483647, fds=fds@entry=0x7f795c003020, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#4  0x00007f79e5525974 in g_main_context_iterate (context=context@entry=0x7f795c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#5  0x00007f79e5525aec in g_main_context_iteration (context=0x7f795c000990, may_block=1) at ././glib/gmain.c:3990
#6  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f79e5d4d464 in start_thread (arg=0x7f7963354700) at pthread_create.c:333
#11 0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7f7980e59700 (LWP 2691)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f79e9ace933 in JSC::GCThread::gcThreadMain (this=0x1ad1840) at heap/GCThread.cpp:81
#2  0x00007f79e9df6941 in WTF::wtfThreadEntryPoint(void*) () at wtf/ThreadingPthreads.cpp:195
#3  0x00007f79e5d4d464 in start_thread (arg=0x7f7980e59700) at pthread_create.c:333
#4  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f798165a700 (LWP 2690)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f79e9ace933 in JSC::GCThread::gcThreadMain (this=0x1ad10d0) at heap/GCThread.cpp:81
#2  0x00007f79e9df6941 in WTF::wtfThreadEntryPoint(void*) () at wtf/ThreadingPthreads.cpp:195
#3  0x00007f79e5d4d464 in start_thread (arg=0x7f798165a700) at pthread_create.c:333
#4  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f7981e5b700 (LWP 2689)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f79e9ace933 in JSC::GCThread::gcThreadMain (this=0x1ad28e0) at heap/GCThread.cpp:81
#2  0x00007f79e9df6941 in WTF::wtfThreadEntryPoint(void*) () at wtf/ThreadingPthreads.cpp:195
#3  0x00007f79e5d4d464 in start_thread (arg=0x7f7981e5b700) at pthread_create.c:333
#4  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f798265c700 (LWP 2688)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f79e9acd811 in JSC::BlockAllocator::blockFreeingThreadMain (this=0x7f79c976a058) at heap/BlockAllocator.cpp:139
#2  0x00007f79e9df6941 in WTF::wtfThreadEntryPoint(void*) () at wtf/ThreadingPthreads.cpp:195
#3  0x00007f79e5d4d464 in start_thread (arg=0x7f798265c700) at pthread_create.c:333
#4  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f79c8cae700 (LWP 2687)):
#0  0x00007f79ec7a3832 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f79ec9230c9 in QTimerInfoList::updateCurrentTime() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f79ec923675 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f79ec924a0e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f79e5524ed9 in g_main_context_prepare (context=context@entry=0x7f797c000990, priority=priority@entry=0x7f79c8cadb80) at ././glib/gmain.c:3501
#5  0x00007f79e55258fb in g_main_context_iterate (context=context@entry=0x7f797c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#6  0x00007f79e5525aec in g_main_context_iteration (context=0x7f797c000990, may_block=1) at ././glib/gmain.c:3990
#7  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f79e5d4d464 in start_thread (arg=0x7f79c8cae700) at pthread_create.c:333
#12 0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f79ca007700 (LWP 2686)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f79e9dc5c2b in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7f79ea662bbc <WTF::pageheap_memory+57564>) at wtf/FastMalloc.cpp:2825
#2  0x00007f79e9dc5c69 in WTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f79ea662bbc <WTF::pageheap_memory+57564>) at wtf/FastMalloc.cpp:1993
#3  0x00007f79e5d4d464 in start_thread (arg=0x7f79ca007700) at pthread_create.c:333
#4  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f79cb218700 (LWP 2685)):
#0  0x00007f79ebdf350d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f79e55259d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f79c4013ab0, timeout=<optimized out>, context=0x7f79c4000990) at ././glib/gmain.c:4228
#2  g_main_context_iterate (context=context@entry=0x7f79c4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007f79e5525aec in g_main_context_iteration (context=0x7f79c4000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007f79ec92551b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f79ec6f2e53 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f79eec0e525 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f79e5d4d464 in start_thread (arg=0x7f79cb218700) at pthread_create.c:333
#10 0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f79d3675700 (LWP 2684)):
#0  0x00007f79ebdf350d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f79e637b150 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f79e637cee9 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f79d51a4a79 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f79ec6f7d78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79e5d4d464 in start_thread (arg=0x7f79d3675700) at pthread_create.c:333
#6  0x00007f79ebdfc97f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f79d542af00 (LWP 2683)):
[KCrash Handler]
#6  QVector<QSharedPointer<KCalCore::Incidence> >::reserve (this=<optimized out>, asize=asize@entry=0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvector.h:395
#7  0x00007f797264e267 in KCalCore::Calendar::setupRelations (this=0x21dd4f0, forincidence=...) at /build/kcalcore-ES9vGw/kcalcore-16.04.2/src/calendar.cpp:1024
#8  0x00007f797268f8bc in KCalCore::MemoryCalendar::addIncidence (this=0x21dd4f0, incidence=...) at /build/kcalcore-ES9vGw/kcalcore-16.04.2/src/memorycalendar.cpp:311
#9  0x00007f7972b7e68a in Akonadi::CalendarBasePrivate::internalInsert (this=this@entry=0x21dd570, item=...) at /build/akonadi-calendar-CjpiBg/akonadi-calendar-16.04.2/src/calendarbase.cpp:158
#10 0x00007f7972b8b8d8 in Akonadi::ETMCalendarPrivate::itemsAdded (this=this@entry=0x21dd570, items=...) at /build/akonadi-calendar-CjpiBg/akonadi-calendar-16.04.2/src/etmcalendar.cpp:295
#11 0x00007f7972b8d382 in Akonadi::ETMCalendarPrivate::onRowsInsertedInFilteredModel (this=0x21dd570, index=..., start=<optimized out>, end=<optimized out>) at /build/akonadi-calendar-CjpiBg/akonadi-calendar-16.04.2/src/etmcalendar.cpp:450
#12 0x00007f79ec8fcc7c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f79ec9765e4 in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f79ec875eab in QAbstractItemModel::endInsertRows() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f79ec897516 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f79ec899fc5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f79ec89da59 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f79ec8fcbd9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f79ec9765e4 in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f79ec875eab in QAbstractItemModel::endInsertRows() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f79ec897516 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f79ec899fc5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f79ec89da59 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f79ec8fcbd9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f79ec9765e4 in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f79ec875eab in QAbstractItemModel::endInsertRows() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f79ec897516 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f79ec899fc5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f79ec89da59 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f79ec8fcbd9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f79ec9765e4 in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f79ec875eab in QAbstractItemModel::endInsertRows() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f79e24a4834 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ItemModels.so.5
#34 0x00007f79ec8fcbd9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f79ec9765e4 in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f79ec875eab in QAbstractItemModel::endInsertRows() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f79eb41bd71 in Akonadi::EntityTreeModelPrivate::monitoredItemAdded (this=0x21e2e20, item=..., collection=...) at ./src/core/models/entitytreemodel_p.cpp:1099
#38 0x00007f79ec8fcbd9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f79eb3565da in Akonadi::Monitor::itemAdded (this=<optimized out>, _t1=..., _t2=...) at ./obj-x86_64-linux-gnu/src/core/moc_monitor.cpp:870
#40 0x00007f79eb362d64 in Akonadi::MonitorPrivate::emitItemsNotification (this=this@entry=0x21dfca0, msg_=..., items=..., collection=..., collectionDest=...) at ./src/core/monitor_p.cpp:949
#41 0x00007f79eb363513 in Akonadi::MonitorPrivate::emitNotification (this=this@entry=0x21dfca0, msg=...) at ./src/core/monitor_p.cpp:587
#42 0x00007f79eb3102ce in Akonadi::ChangeRecorderPrivate::emitNotification (this=0x21dfca0, msg=...) at ./src/core/changerecorder_p.cpp:499
#43 0x00007f79eb3603aa in Akonadi::MonitorPrivate::flushPipeline (this=this@entry=0x21dfca0) at ./src/core/monitor_p.cpp:809
#44 0x00007f79eb360629 in Akonadi::MonitorPrivate::dataAvailable (this=0x21dfca0) at ./src/core/monitor_p.cpp:818
#45 0x00007f79ec8fcbd9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#46 0x00007f79eb30931c in Akonadi::EntityListCache<Akonadi::Item, Akonadi::ItemFetchJob, Akonadi::ItemFetchScope>::processResult (this=<optimized out>, job=<optimized out>) at ./src/core/entitycache_p.h:499
#47 0x00007f79eb339474 in Akonadi::EntityCacheBase::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./obj-x86_64-linux-gnu/src/core/moc_entitycache_p.cpp:80
#48 0x00007f79ec8fcbd9 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007f79ed9c5b82 in KJob::result(KJob*, KJob::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#50 0x00007f79ed9c74c1 in KJob::finishJob(bool) () from /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#51 0x00007f79eb3cf269 in Akonadi::Job::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./obj-x86_64-linux-gnu/src/core/moc_job.cpp:108
#52 0x00007f79ec8fd729 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#53 0x00007f79ed45cbec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#54 0x00007f79ed46208f in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#55 0x00007f79ec8cf450 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#56 0x00007f79ec8d13cc in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#57 0x00007f79ec9250f3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#58 0x00007f79e55257d7 in g_main_dispatch (context=0x7f79cc0016f0) at ././glib/gmain.c:3203
#59 g_main_context_dispatch (context=context@entry=0x7f79cc0016f0) at ././glib/gmain.c:3856
#60 0x00007f79e5525a40 in g_main_context_iterate (context=context@entry=0x7f79cc0016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3929
#61 0x00007f79e5525aec in g_main_context_iteration (context=0x7f79cc0016f0, may_block=1) at ././glib/gmain.c:3990
#62 0x00007f79ec9254ff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#63 0x00007f79ec8cd19a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#64 0x00007f79ec8d599c in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#65 0x000000000040439f in main (argc=1, argv=0x7ffc62cd7688) at /build/kdepim-9MD_FP/kdepim-16.04.3/kontact/src/main.cpp:223

Possible duplicates by query: bug 371242, bug 366800, bug 362183, bug 356193, bug 355736.

Reported using DrKonqi