Application: kontact (5.2.3)

Qt Version: 5.6.1
Frameworks Version: 5.28.0
Operating System: Linux 4.8.0-37-generic x86_64
Distribution: Ubuntu 16.10

-- Information about the crash:
- What I was doing when the application crashed: Clicked on File --> Exit
Kontact usually crashes whenI close it.
Version 5.2.3
Kubuntu 16.10

-- 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 0x7fa866ff9900 (LWP 25269))]

Thread 24 (Thread 0x7fa7d8af0700 (LWP 1571)):
#0  0x00007fa87d1c70bd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa8769319d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fa7bc0022e0, timeout=<optimized out>, context=0x7fa7bc0020d0) at ././glib/gmain.c:4228
#2  0x00007fa8769319d6 in g_main_context_iterate (context=context@entry=0x7fa7bc0020d0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007fa876931aec in g_main_context_iteration (context=0x7fa7bc0020d0, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa87dd0c4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa87dad9d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa87715e6ca in start_thread (arg=0x7fa7d8af0700) at pthread_create.c:333
#9  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 23 (Thread 0x7fa7d92f1700 (LWP 1569)):
#0  0x00007fa87d1c70bd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa8769319d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fa7c8002e70, timeout=<optimized out>, context=0x7fa7c8003ca0) at ././glib/gmain.c:4228
#2  0x00007fa8769319d6 in g_main_context_iterate (context=context@entry=0x7fa7c8003ca0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007fa876931aec in g_main_context_iteration (context=0x7fa7c8003ca0, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa87dd0c4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa87dad9d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa87715e6ca in start_thread (arg=0x7fa7d92f1700) at pthread_create.c:333
#9  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 22 (Thread 0x7fa7db735700 (LWP 1567)):
#0  0x00007fa87d1c70bd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa8769319d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fa7d4005a80, timeout=<optimized out>, context=0x7fa7d4058550) at ././glib/gmain.c:4228
#2  0x00007fa8769319d6 in g_main_context_iterate (context=context@entry=0x7fa7d4058550, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007fa876931aec in g_main_context_iteration (context=0x7fa7d4058550, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa87dd0c4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa87dad9d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa87715e6ca in start_thread (arg=0x7fa7db735700) at pthread_create.c:333
#9  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 21 (Thread 0x7fa7da733700 (LWP 1565)):
#0  0x00007fa876977029 in g_mutex_lock (mutex=mutex@entry=0x7fa7d0003ca0) at ././glib/gthread-posix.c:1336
#1  0x00007fa876931ad8 in g_main_context_iteration (context=0x7fa7d0003ca0, may_block=1) at ././glib/gmain.c:3989
#2  0x00007fa87dd0c4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa87dad9d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa87715e6ca in start_thread (arg=0x7fa7da733700) at pthread_create.c:333
#7  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 20 (Thread 0x7fa7c30be700 (LWP 1563)):
#0  0x00007fa876977029 in g_mutex_lock (mutex=mutex@entry=0x7fa7b80040a0) at ././glib/gthread-posix.c:1336
#1  0x00007fa876930db7 in g_main_context_prepare (context=context@entry=0x7fa7b80040a0, priority=priority@entry=0x7fa7c30bdb80) at ././glib/gmain.c:3439
#2  0x00007fa8769318fb in g_main_context_iterate (context=context@entry=0x7fa7b80040a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#3  0x00007fa876931aec in g_main_context_iteration (context=0x7fa7b80040a0, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa87dd0c4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa87dad9d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa87715e6ca in start_thread (arg=0x7fa7c30be700) at pthread_create.c:333
#9  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 19 (Thread 0x7fa7ae9d5700 (LWP 25472)):
#0  0x00007fa87d1c70bd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa8769319d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fa7a4003220, timeout=<optimized out>, context=0x7fa7a4000990) at ././glib/gmain.c:4228
#2  0x00007fa8769319d6 in g_main_context_iterate (context=context@entry=0x7fa7a4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007fa876931aec in g_main_context_iteration (context=0x7fa7a4000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa87dd0c4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa87dad9d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa87715e6ca in start_thread (arg=0x7fa7ae9d5700) at pthread_create.c:333
#9  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 18 (Thread 0x7fa7c16ac700 (LWP 25392)):
#0  0x00007fa87d1c70bd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa8769319d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fa7a8002a20, timeout=<optimized out>, context=0x7fa7a8000990) at ././glib/gmain.c:4228
#2  0x00007fa8769319d6 in g_main_context_iterate (context=context@entry=0x7fa7a8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007fa876931aec in g_main_context_iteration (context=0x7fa7a8000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa87dd0c4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa87dad9d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa87715e6ca in start_thread (arg=0x7fa7c16ac700) at pthread_create.c:333
#9  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 17 (Thread 0x7fa7c1ead700 (LWP 25389)):
#0  0x00007fa87d1c70bd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa8769319d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fa7b4003eb0, timeout=<optimized out>, context=0x7fa7b4000990) at ././glib/gmain.c:4228
#2  0x00007fa8769319d6 in g_main_context_iterate (context=context@entry=0x7fa7b4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007fa876931aec in g_main_context_iteration (context=0x7fa7b4000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa87dd0c4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa87dad9d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa87715e6ca in start_thread (arg=0x7fa7c1ead700) at pthread_create.c:333
#9  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 16 (Thread 0x7fa7c28bd700 (LWP 25365)):
#0  0x00007ffc7399d939 in  ()
#1  0x00007ffc7399dbc9 in clock_gettime ()
#2  0x00007fa87d1e1846 in __GI___clock_gettime (clock_id=1, tp=0x7fa7c28bca20) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007fa87db8a726 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa87dd0a039 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87dd0a5e5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa87dd0b99e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa876930ed9 in g_main_context_prepare (context=context@entry=0x7fa7b0000990, priority=priority@entry=0x7fa7c28bcb80) at ././glib/gmain.c:3501
#8  0x00007fa8769318fb in g_main_context_iterate (context=context@entry=0x7fa7b0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#9  0x00007fa876931aec in g_main_context_iteration (context=0x7fa7b0000990, may_block=1) at ././glib/gmain.c:3990
#10 0x00007fa87dd0c4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fa87dad9d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fa87715e6ca in start_thread (arg=0x7fa7c28bd700) at pthread_create.c:333
#15 0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 15 (Thread 0x7fa7d9f32700 (LWP 25357)):
#0  0x00007fa876977040 in g_mutex_unlock (mutex=0x7fa7c4000990) at ././glib/gthread-posix.c:1345
#1  0x00007fa8769313c1 in g_main_context_check (context=context@entry=0x7fa7c4000990, max_priority=2147483647, fds=fds@entry=0x7fa7c4003220, n_fds=n_fds@entry=1) at ././glib/gmain.c:3760
#2  0x00007fa876931974 in g_main_context_iterate (context=context@entry=0x7fa7c4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#3  0x00007fa876931aec in g_main_context_iteration (context=0x7fa7c4000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa87dd0c4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa87dad9d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa87715e6ca in start_thread (arg=0x7fa7d9f32700) at pthread_create.c:333
#9  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 14 (Thread 0x7fa7daf34700 (LWP 25353)):
#0  0x00007fa876977029 in g_mutex_lock (mutex=mutex@entry=0x7fa7cc000990) at ././glib/gthread-posix.c:1336
#1  0x00007fa8769308c0 in g_main_context_acquire (context=0x7fa7cc000990) at ././glib/gmain.c:3264
#2  0x00007fa876931885 in g_main_context_iterate (context=context@entry=0x7fa7cc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3879
#3  0x00007fa876931aec in g_main_context_iteration (context=0x7fa7cc000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa87dd0c4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa87dad9d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa87715e6ca in start_thread (arg=0x7fa7daf34700) at pthread_create.c:333
#9  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 13 (Thread 0x7fa7f7fff700 (LWP 25282)):
#0  0x00007fa8771644d0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa87ae9eda3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa87b1bf591 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa87715e6ca in start_thread (arg=0x7fa7f7fff700) at pthread_create.c:333
#4  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 12 (Thread 0x7fa808d73700 (LWP 25281)):
#0  0x00007fa8771644d0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa87ae9eda3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa87b1bf591 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa87715e6ca in start_thread (arg=0x7fa808d73700) at pthread_create.c:333
#4  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7fa809574700 (LWP 25280)):
#0  0x00007fa8771644d0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa87ae9eda3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa87b1bf591 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa87715e6ca in start_thread (arg=0x7fa809574700) at pthread_create.c:333
#4  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7fa809d75700 (LWP 25279)):
#0  0x00007fa8771644d0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa87ae9eda3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa87b1bf591 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa87715e6ca in start_thread (arg=0x7fa809d75700) at pthread_create.c:333
#4  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7fa80a576700 (LWP 25278)):
#0  0x00007fa8771644d0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa87ae9eda3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa87b1bf591 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa87715e6ca in start_thread (arg=0x7fa80a576700) at pthread_create.c:333
#4  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7fa80ad77700 (LWP 25277)):
#0  0x00007fa8771644d0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa87ae9eda3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa87b1bf591 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa87715e6ca in start_thread (arg=0x7fa80ad77700) at pthread_create.c:333
#4  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7fa80b578700 (LWP 25276)):
#0  0x00007fa8771644d0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa87ae9dd74 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa87b1bf591 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa87715e6ca in start_thread (arg=0x7fa80b578700) at pthread_create.c:333
#4  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7fa81097f700 (LWP 25275)):
#0  0x00007fa877164879 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fa812a2de44 in  () at /usr/lib/nvidia-378/libGLX_nvidia.so.0
#2  0x00007fa81174b394 in  () at /usr/lib/nvidia-378/libnvidia-glcore.so.378.13
#3  0x00007fa812a2d12c in  () at /usr/lib/nvidia-378/libGLX_nvidia.so.0
#4  0x00007fa87715e6ca in start_thread (arg=0x7fa81097f700) at pthread_create.c:333
#5  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7fa813575700 (LWP 25273)):
#0  0x00007fa87d1c70bd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa8769319d6 in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7fa80c002e70, timeout=<optimized out>, context=0x7fa80c000990) at ././glib/gmain.c:4228
#2  0x00007fa8769319d6 in g_main_context_iterate (context=context@entry=0x7fa80c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3924
#3  0x00007fa876931aec in g_main_context_iteration (context=0x7fa80c000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa87dd0c4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa87dad9d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa87715e6ca in start_thread (arg=0x7fa813575700) at pthread_create.c:333
#9  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7fa85abe4700 (LWP 25272)):
#0  0x00007fa8771644d0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa87b18f96b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa87b18f9a9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa87715e6ca in start_thread (arg=0x7fa85abe4700) at pthread_create.c:333
#4  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7fa85bdf5700 (LWP 25271)):
#0  0x00007fa87692ea70 in g_source_iter_clear (iter=iter@entry=0x7fa85bdf4ad0) at ././glib/gmain.c:995
#1  0x00007fa876930fa8 in g_main_context_prepare (context=context@entry=0x7fa854000990, priority=priority@entry=0x7fa85bdf4b50) at ././glib/gmain.c:3565
#2  0x00007fa8769318fb in g_main_context_iterate (context=context@entry=0x7fa854000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#3  0x00007fa876931aec in g_main_context_iteration (context=0x7fa854000990, may_block=1) at ././glib/gmain.c:3990
#4  0x00007fa87dd0c4ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa87dad9d43 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa87ffe8575 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa87715e6ca in start_thread (arg=0x7fa85bdf5700) at pthread_create.c:333
#10 0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7fa8642a5700 (LWP 25270)):
#0  0x00007fa87d1c70bd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa87778ac62 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fa87778c8d7 in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fa866c2a299 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fa87dadec68 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa87715e6ca in start_thread (arg=0x7fa8642a5700) at pthread_create.c:333
#6  0x00007fa87d1d30af in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7fa866ff9900 (LWP 25269)):
[KCrash Handler]
#6  0x00007fa87dcbecc7 in QMetaObject::cast(QObject*) const () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa7e5b0ede9 in Akregator::FrameManager::saveProperties(KConfigGroup&) () at /usr/lib/x86_64-linux-gnu/libakregatorprivate.so.5
#8  0x00007fa7e5ff8ac9 in Akregator::MainWidget::saveProperties(KConfigGroup&) () at /usr/lib/x86_64-linux-gnu/qt5/plugins/akregatorpart.so
#9  0x00007fa7e5ff114d in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/akregatorpart.so
#10 0x00007fa7e600d5e5 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/akregatorpart.so
#11 0x00007fa87dce4699 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fa87e8418ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007fa87e846d4f in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007fa87dcb63b0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fa87dcb833c in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007fa87dd0c083 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fa8769317d7 in g_main_dispatch (context=0x7fa85c0016f0) at ././glib/gmain.c:3203
#18 0x00007fa8769317d7 in g_main_context_dispatch (context=context@entry=0x7fa85c0016f0) at ././glib/gmain.c:3856
#19 0x00007fa876931a40 in g_main_context_iterate (context=context@entry=0x7fa85c0016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3929
#20 0x00007fa876931aec in g_main_context_iteration (context=0x7fa85c0016f0, may_block=1) at ././glib/gmain.c:3990
#21 0x00007fa87dd0c48f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fa87dcb40fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fa87dcbc90c in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x000056392969a2bf in  ()
#25 0x00007fa87d0eb3f1 in __libc_start_main (main=0x563929699320, argc=3, argv=0x7ffc738c85e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc738c85d8) at ../csu/libc-start.c:291
#26 0x000056392969a7ca in _start ()

Reported using DrKonqi