Application: kontact (5.1.3)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-22-generic x86_64
Distribution: Ubuntu 16.04 LTS

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

Enable / disable calendar
when pressed radio button, the crash happens

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 0x7fa543615940 (LWP 7453))]

Thread 27 (Thread 0x7fa51e5e2700 (LWP 7455)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa53ec3488b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa53ec348c9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa53a9f76fa in start_thread (arg=0x7fa51e5e2700) at pthread_create.c:333
#4  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7fa4db043700 (LWP 7456)):
#0  0x00007fa53a1cce8c in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa53a1cd380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa4db042c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa5412bd84e in QThreadPrivate::start (arg=0xf74e60) at thread/qthread_unix.cpp:331
#7  0x00007fa53a9f76fa in start_thread (arg=0x7fa4db043700) at pthread_create.c:333
#8  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7fa4d8bb5700 (LWP 7457)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa53e942a74 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa53ec64541 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa53a9f76fa in start_thread (arg=0x7fa4d8bb5700) at pthread_create.c:333
#4  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7fa4d3fff700 (LWP 7458)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa53e943aa3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa53ec64541 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa53a9f76fa in start_thread (arg=0x7fa4d3fff700) at pthread_create.c:333
#4  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7fa4d37fe700 (LWP 7459)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa53e943aa3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa53ec64541 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa53a9f76fa in start_thread (arg=0x7fa4d37fe700) at pthread_create.c:333
#4  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7fa4d2ffd700 (LWP 7460)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa53e943aa3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007fa53ec64541 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007fa53a9f76fa in start_thread (arg=0x7fa4d2ffd700) at pthread_create.c:333
#4  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7fa4b93a5700 (LWP 7461)):
#0  0x00007fa5409b1e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa53a1cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4b40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa4b93a4c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x130cd30) at thread/qthread_unix.cpp:331
#7  0x00007fa53a9f76fa in start_thread (arg=0x7fa4b93a5700) at pthread_create.c:333
#8  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7fa4b8ba4700 (LWP 7462)):
#0  0x00007fa53a211a49 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa53a1ccd5c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cd2c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4ac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa4b8ba3c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x1317420) at thread/qthread_unix.cpp:331
#8  0x00007fa53a9f76fa in start_thread (arg=0x7fa4b8ba4700) at pthread_create.c:333
#9  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7fa4b3fff700 (LWP 7465)):
#0  0x00007fa5412b59aa in QBasicAtomicOps<8>::testAndSetRelaxed<QMutexData*> (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x13738f8: 0x1) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86.h:259
#1  QGenericAtomicOps<QBasicAtomicOps<8> >::testAndSetAcquire<QMutexData*, QMutexData*> (currentValue=<synthetic pointer>, newValue=<optimized out>, expectedValue=0x0, _q_value=@0x13738f8: 0x1) at ../../include/QtCore/../../src/corelib/thread/qgenericatomic.h:166
#2  QBasicAtomicPointer<QMutexData>::testAndSetAcquire (currentValue=<synthetic pointer>, newValue=<optimized out>, expectedValue=0x0, this=0x13738f8, this@entry=0x29) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:276
#3  QBasicMutex::fastTryLock (current=<synthetic pointer>, this=0x13738f8, this@entry=0x29) at thread/qmutex.h:82
#4  QMutex::lock (this=this@entry=0x13738f8) at thread/qmutex.cpp:212
#5  0x00007fa5414f42f9 in QMutexLocker::QMutexLocker (m=0x13738f8, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:128
#6  QThreadData::canWaitLocked (this=0x13738d0) at ../../include/QtCore/5.5.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:240
#7  postEventSourcePrepare (timeout=<synthetic pointer>, s=0x7fa4a80012d0) at kernel/qeventdispatcher_glib.cpp:254
#8  postEventSourceCheck (source=0x7fa4a80012d0) at kernel/qeventdispatcher_glib.cpp:264
#9  0x00007fa53a1ccd51 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fa53a1cd2c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4a80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa4b3ffec80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007fa5412bd84e in QThreadPrivate::start (arg=0x135f110) at thread/qthread_unix.cpp:331
#16 0x00007fa53a9f76fa in start_thread (arg=0x7fa4b3fff700) at pthread_create.c:333
#17 0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7fa4b37fe700 (LWP 7467)):
#0  QTimerInfoList::updateCurrentTime (this=this@entry=0x7fa4a0002cd0) at kernel/qtimerinfo_unix.cpp:84
#1  0x00007fa5414f2a95 in QTimerInfoList::timerWait (this=0x7fa4a0002cd0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#2  0x00007fa5414f3e7e in timerSourcePrepareHelper (timeout=0x7fa4b37fdac4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#3  timerSourcePrepare (source=<optimized out>, timeout=0x7fa4b37fdac4) at kernel/qeventdispatcher_glib.cpp:160
#4  0x00007fa53a1cc8ad in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa53a1cd24b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4a00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#8  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa4b37fdc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#9  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#10 0x00007fa5412bd84e in QThreadPrivate::start (arg=0x138cab0) at thread/qthread_unix.cpp:331
#11 0x00007fa53a9f76fa in start_thread (arg=0x7fa4b37fe700) at pthread_create.c:333
#12 0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7fa4b2ffd700 (LWP 7469)):
#0  0x00007fa53a1cd2b3 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4a40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#3  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa4b2ffcc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x140ef50) at thread/qthread_unix.cpp:331
#6  0x00007fa53a9f76fa in start_thread (arg=0x7fa4b2ffd700) at pthread_create.c:333
#7  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7fa4b27fc700 (LWP 7471)):
#0  0x00007fa53a211a64 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa53a1cd23e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa4b27fbc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x144c9b0) at thread/qthread_unix.cpp:331
#7  0x00007fa53a9f76fa in start_thread (arg=0x7fa4b27fc700) at pthread_create.c:333
#8  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fa4b0ef4700 (LWP 7473)):
#0  0x00007fa5412bc783 in QThreadData::current (createIfNecessary=createIfNecessary@entry=true) at thread/qthread_unix.cpp:211
#1  0x00007fa5414f42e1 in postEventSourcePrepare (timeout=0x0, s=0x7fa49c0012d0) at kernel/qeventdispatcher_glib.cpp:247
#2  postEventSourceCheck (source=0x7fa49c0012d0) at kernel/qeventdispatcher_glib.cpp:264
#3  0x00007fa53a1ccd51 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa53a1cd2c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa49c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa4b0ef3c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#9  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x1536050) at thread/qthread_unix.cpp:331
#10 0x00007fa53a9f76fa in start_thread (arg=0x7fa4b0ef4700) at pthread_create.c:333
#11 0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7fa497fff700 (LWP 7475)):
#0  0x00007fa5409b1e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa53a1cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4900008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa497ffec80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x1543d60) at thread/qthread_unix.cpp:331
#7  0x00007fa53a9f76fa in start_thread (arg=0x7fa497fff700) at pthread_create.c:333
#8  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fa4977fe700 (LWP 7477)):
#0  0x00007fa5409ad9cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa53a2106c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cce04 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa53a1cd2c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa4977fdc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x15bfc30) at thread/qthread_unix.cpp:331
#9  0x00007fa53a9f76fa in start_thread (arg=0x7fa4977fe700) at pthread_create.c:333
#10 0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fa4965d2700 (LWP 7479)):
#0  0x00007ffcd130dcaf in clock_gettime ()
#1  0x00007fa5409cbfb6 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7fa4965d19f0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fa54136dc16 in qt_clock_gettime (ts=0x7fa4965d19f0, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007fa5414f2529 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fa48c0013a0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007fa5414f2a95 in QTimerInfoList::timerWait (this=0x7fa48c0013a0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007fa5414f3e7e in timerSourcePrepareHelper (timeout=0x7fa4965d1ac4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fa4965d1ac4) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007fa53a1cc8ad in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fa53a1cd24b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa48c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa4965d1c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007fa5412bd84e in QThreadPrivate::start (arg=0x16e0770) at thread/qthread_unix.cpp:331
#16 0x00007fa53a9f76fa in start_thread (arg=0x7fa4965d2700) at pthread_create.c:333
#17 0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fa495dd1700 (LWP 7481)):
#0  0x00007fa5409b1e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa53a1cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4800008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa495dd0c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x1722c70) at thread/qthread_unix.cpp:331
#7  0x00007fa53a9f76fa in start_thread (arg=0x7fa495dd1700) at pthread_create.c:333
#8  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fa494c43700 (LWP 7483)):
#0  0x00007ffcd130db10 in clock_gettime ()
#1  0x00007fa5409cbfb6 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7fa494c429f0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fa54136dc16 in qt_clock_gettime (ts=0x7fa494c429f0, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007fa5414f2529 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fa4840030d0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007fa5414f2a95 in QTimerInfoList::timerWait (this=0x7fa4840030d0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007fa5414f3e7e in timerSourcePrepareHelper (timeout=0x7fa494c42ac4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fa494c42ac4) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007fa53a1cc8ad in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fa53a1cd24b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#13 0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa494c42c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007fa5412bd84e in QThreadPrivate::start (arg=0x17d54e0) at thread/qthread_unix.cpp:331
#16 0x00007fa53a9f76fa in start_thread (arg=0x7fa494c43700) at pthread_create.c:333
#17 0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fa47ffff700 (LWP 7485)):
#0  0x00007fa53a211a49 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa53a1ccd5c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cd2c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4780008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa47fffec80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x180ced0) at thread/qthread_unix.cpp:331
#8  0x00007fa53a9f76fa in start_thread (arg=0x7fa47ffff700) at pthread_create.c:333
#9  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fa47f7fe700 (LWP 7487)):
#0  idleTimerSourcePrepare (source=0x7fa470002b20, timeout=0x7fa47f7fdac4) at kernel/qeventdispatcher_glib.cpp:199
#1  0x00007fa53a1cc8ad in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cd24b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4700008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa47f7fdc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x18146f0) at thread/qthread_unix.cpp:331
#8  0x00007fa53a9f76fa in start_thread (arg=0x7fa47f7fe700) at pthread_create.c:333
#9  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fa47effd700 (LWP 7489)):
#0  0x00007fa5409ad9cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa53a2106c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cce04 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa53a1cd2c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4740008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa47effcc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x18ac150) at thread/qthread_unix.cpp:331
#9  0x00007fa53a9f76fa in start_thread (arg=0x7fa47effd700) at pthread_create.c:333
#10 0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fa47e7fc700 (LWP 7491)):
#0  0x00007fa53a9fe347 in __GI___pthread_getspecific (key=<optimized out>) at pthread_getspecific.c:60
#1  0x00007fa53a1f3ff0 in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cd41d in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4680008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa47e7fbc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x1922640) at thread/qthread_unix.cpp:331
#7  0x00007fa53a9f76fa in start_thread (arg=0x7fa47e7fc700) at pthread_create.c:333
#8  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fa47dffb700 (LWP 7493)):
#0  0x00007fa5409ad9cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa53a2106c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cce04 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa53a1cd2c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa46c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa47dffac80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x19c7ab0) at thread/qthread_unix.cpp:331
#9  0x00007fa53a9f76fa in start_thread (arg=0x7fa47dffb700) at pthread_create.c:333
#10 0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fa47d7fa700 (LWP 7495)):
#0  0x00007fa5409ad9cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa53a2106c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cce04 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa53a1cd2c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa47d7f9c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x1a72420) at thread/qthread_unix.cpp:331
#9  0x00007fa53a9f76fa in start_thread (arg=0x7fa47d7fa700) at pthread_create.c:333
#10 0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fa47cff9700 (LWP 7497)):
#0  0x00007fa53a211a49 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa53a1ccd5c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cd2c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4640008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa47cff8c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x1a94010) at thread/qthread_unix.cpp:331
#8  0x00007fa53a9f76fa in start_thread (arg=0x7fa47cff9700) at pthread_create.c:333
#9  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fa45cdbc700 (LWP 7516)):
#0  0x00007fa5409b1e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa53a1cd31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa5414f4a9b in QEventDispatcherGlib::processEvents (this=0x7fa4580008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7fa45cdbbc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa5412b88a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fa5412bd84e in QThreadPrivate::start (arg=0x11a84a0) at thread/qthread_unix.cpp:331
#7  0x00007fa53a9f76fa in start_thread (arg=0x7fa45cdbc700) at pthread_create.c:333
#8  0x00007fa5409bdb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fa543615940 (LWP 7453)):
[KCrash Handler]
#6  0x00007fa4d11e9c90 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5CalendarCore.so.5
#7  0x00007fa4d11e5894 in KCalCore::Calendar::setupRelations(QSharedPointer<KCalCore::Incidence> const&) () from /usr/lib/x86_64-linux-gnu/libKF5CalendarCore.so.5
#8  0x00007fa4d1223bac in KCalCore::MemoryCalendar::addIncidence(QSharedPointer<KCalCore::Incidence> const&) () from /usr/lib/x86_64-linux-gnu/libKF5CalendarCore.so.5
#9  0x00007fa4bdc32e9e in ?? () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCalendar.so.5
#10 0x00007fa4bdc406f8 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCalendar.so.5
#11 0x00007fa4bdc41a22 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCalendar.so.5
#12 0x00007fa5414cce4f in QtPrivate::QSlotObjectBase::call (a=0x7ffcd12a46a0, r=0x1840d60, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#13 QMetaObject::activate (sender=sender@entry=0x1813cc0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffcd12a46a0) at kernel/qobject.cpp:3698
#14 0x00007fa5414cd7d7 in QMetaObject::activate (sender=sender@entry=0x1813cc0, m=m@entry=0x7fa5416e6ec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffcd12a46a0) at kernel/qobject.cpp:3578
#15 0x00007fa541549324 in QAbstractItemModel::rowsInserted (this=this@entry=0x1813cc0, _t1=..., _t2=0, _t3=145) at .moc/moc_qabstractitemmodel.cpp:583
#16 0x00007fa541446776 in QAbstractItemModel::endInsertRows (this=this@entry=0x1813cc0) at itemmodels/qabstractitemmodel.cpp:2619
#17 0x00007fa5414696eb in QSortFilterProxyModelPrivate::insert_source_items (this=this@entry=0x184f0d0, source_to_proxy=..., proxy_to_source=..., source_items=..., source_parent=..., emit_signal=emit_signal@entry=true, orient=Qt::Vertical) at itemmodels/qsortfilterproxymodel.cpp:714
#18 0x00007fa54146bf44 in QSortFilterProxyModelPrivate::source_items_inserted (orient=Qt::Vertical, end=<optimized out>, start=<optimized out>, source_parent=..., this=0x184f0d0) at itemmodels/qsortfilterproxymodel.cpp:825
#19 QSortFilterProxyModelPrivate::_q_sourceRowsInserted (this=0x184f0d0, source_parent=..., start=<optimized out>, end=<optimized out>) at itemmodels/qsortfilterproxymodel.cpp:1381
#20 0x00007fa54146f929 in QSortFilterProxyModel::qt_static_metacall (_o=_o@entry=0x1813cc0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=12, _a=_a@entry=0x7ffcd12a4a20) at .moc/moc_qsortfilterproxymodel.cpp:209
#21 0x00007fa5414ccfca in QMetaObject::activate (sender=sender@entry=0x1394340, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffcd12a4a20) at kernel/qobject.cpp:3713
#22 0x00007fa5414cd7d7 in QMetaObject::activate (sender=sender@entry=0x1394340, m=m@entry=0x7fa5416e6ec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffcd12a4a20) at kernel/qobject.cpp:3578
#23 0x00007fa541549324 in QAbstractItemModel::rowsInserted (this=this@entry=0x1394340, _t1=..., _t2=0, _t3=145) at .moc/moc_qabstractitemmodel.cpp:583
#24 0x00007fa541446776 in QAbstractItemModel::endInsertRows (this=this@entry=0x1394340) at itemmodels/qabstractitemmodel.cpp:2619
#25 0x00007fa5414696eb in QSortFilterProxyModelPrivate::insert_source_items (this=this@entry=0x1844860, source_to_proxy=..., proxy_to_source=..., source_items=..., source_parent=..., emit_signal=emit_signal@entry=true, orient=Qt::Vertical) at itemmodels/qsortfilterproxymodel.cpp:714
#26 0x00007fa54146bf44 in QSortFilterProxyModelPrivate::source_items_inserted (orient=Qt::Vertical, end=<optimized out>, start=<optimized out>, source_parent=..., this=0x1844860) at itemmodels/qsortfilterproxymodel.cpp:825
#27 QSortFilterProxyModelPrivate::_q_sourceRowsInserted (this=0x1844860, source_parent=..., start=<optimized out>, end=<optimized out>) at itemmodels/qsortfilterproxymodel.cpp:1381
#28 0x00007fa54146f929 in QSortFilterProxyModel::qt_static_metacall (_o=_o@entry=0x1394340, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=12, _a=_a@entry=0x7ffcd12a4da0) at .moc/moc_qsortfilterproxymodel.cpp:209
#29 0x00007fa5414ccfca in QMetaObject::activate (sender=sender@entry=0x12fdbc0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffcd12a4da0) at kernel/qobject.cpp:3713
#30 0x00007fa5414cd7d7 in QMetaObject::activate (sender=sender@entry=0x12fdbc0, m=m@entry=0x7fa5416e6ec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffcd12a4da0) at kernel/qobject.cpp:3578
#31 0x00007fa541549324 in QAbstractItemModel::rowsInserted (this=this@entry=0x12fdbc0, _t1=..., _t2=0, _t3=145) at .moc/moc_qabstractitemmodel.cpp:583
#32 0x00007fa541446776 in QAbstractItemModel::endInsertRows (this=this@entry=0x12fdbc0) at itemmodels/qabstractitemmodel.cpp:2619
#33 0x00007fa5414696eb in QSortFilterProxyModelPrivate::insert_source_items (this=this@entry=0x18445f0, source_to_proxy=..., proxy_to_source=..., source_items=..., source_parent=..., emit_signal=emit_signal@entry=true, orient=Qt::Vertical) at itemmodels/qsortfilterproxymodel.cpp:714
#34 0x00007fa54146bf44 in QSortFilterProxyModelPrivate::source_items_inserted (orient=Qt::Vertical, end=<optimized out>, start=<optimized out>, source_parent=..., this=0x18445f0) at itemmodels/qsortfilterproxymodel.cpp:825
#35 QSortFilterProxyModelPrivate::_q_sourceRowsInserted (this=0x18445f0, source_parent=..., start=<optimized out>, end=<optimized out>) at itemmodels/qsortfilterproxymodel.cpp:1381
#36 0x00007fa54146f929 in QSortFilterProxyModel::qt_static_metacall (_o=_o@entry=0x12fdbc0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=12, _a=_a@entry=0x7ffcd12a5120) at .moc/moc_qsortfilterproxymodel.cpp:209
#37 0x00007fa5414ccfca in QMetaObject::activate (sender=sender@entry=0x1366c50, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffcd12a5120) at kernel/qobject.cpp:3713
#38 0x00007fa5414cd7d7 in QMetaObject::activate (sender=sender@entry=0x1366c50, m=m@entry=0x7fa5416e6ec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffcd12a5120) at kernel/qobject.cpp:3578
#39 0x00007fa541549324 in QAbstractItemModel::rowsInserted (this=this@entry=0x1366c50, _t1=..., _t2=0, _t3=145) at .moc/moc_qabstractitemmodel.cpp:583
#40 0x00007fa541446776 in QAbstractItemModel::endInsertRows (this=this@entry=0x1366c50) at itemmodels/qabstractitemmodel.cpp:2619
#41 0x00007fa5371f0ddc in KSelectionProxyModelPrivate::insertSelectionIntoProxy (this=this@entry=0x184c8c0, selection=...) at ../../src/kselectionproxymodel.cpp:2084
#42 0x00007fa5371f12d4 in KSelectionProxyModelPrivate::selectionChanged (this=0x184c8c0, _selected=..., _deselected=...) at ../../src/kselectionproxymodel.cpp:1991
#43 0x00007fa5371f34d1 in KSelectionProxyModel::qt_static_metacall (_o=_o@entry=0x1366c50, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=17, _a=_a@entry=0x7ffcd12a5690) at ./moc_kselectionproxymodel.cpp:196
#44 0x00007fa5414ccfca in QMetaObject::activate (sender=sender@entry=0xed8530, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffcd12a5690) at kernel/qobject.cpp:3713
#45 0x00007fa5414cd7d7 in QMetaObject::activate (sender=sender@entry=0xed8530, m=m@entry=0x7fa5416e4160 <QItemSelectionModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffcd12a5690) at kernel/qobject.cpp:3578
#46 0x00007fa54144efc7 in QItemSelectionModel::selectionChanged (this=this@entry=0xed8530, _t1=..., _t2=...) at .moc/moc_qitemselectionmodel.cpp:473
#47 0x00007fa5414533bc in QItemSelectionModel::emitSelectionChanged (this=this@entry=0xed8530, newSelection=..., oldSelection=...) at itemmodels/qitemselectionmodel.cpp:1857
#48 0x00007fa5414558a4 in QItemSelectionModel::select (this=0xed8530, selection=..., command=...) at itemmodels/qitemselectionmodel.cpp:1288
#49 0x00007fa5371d66c2 in KCheckableProxyModel::select (this=this@entry=0x181ea90, selection=..., command=..., command@entry=...) at ../../src/kcheckableproxymodel.cpp:132
#50 0x00007fa5371d6d2f in KCheckableProxyModel::setData (this=0x181ea90, index=..., value=..., role=<optimized out>) at ../../src/kcheckableproxymodel.cpp:105
#51 0x00007fa5414653e7 in QSortFilterProxyModel::setData (this=<optimized out>, index=..., value=..., role=10) at itemmodels/qsortfilterproxymodel.cpp:1961
#52 0x00007fa4950e7785 in ?? () from /usr/lib/x86_64-linux-gnu/libkorganizerprivate.so.5
#53 0x00007fa5414653e7 in QSortFilterProxyModel::setData (this=<optimized out>, index=..., value=..., role=10) at itemmodels/qsortfilterproxymodel.cpp:1961
#54 0x00007fa5414653e7 in QSortFilterProxyModel::setData (this=<optimized out>, index=..., value=..., role=10) at itemmodels/qsortfilterproxymodel.cpp:1961
#55 0x00007fa4950dad6e in ?? () from /usr/lib/x86_64-linux-gnu/libkorganizerprivate.so.5
#56 0x00007fa5414653e7 in QSortFilterProxyModel::setData (this=<optimized out>, index=..., value=..., role=10) at itemmodels/qsortfilterproxymodel.cpp:1961
#57 0x00007fa5414653e7 in QSortFilterProxyModel::setData (this=this@entry=0x1945480, index=..., value=..., role=role@entry=10) at itemmodels/qsortfilterproxymodel.cpp:1961
#58 0x00007fa5422cd9bf in QStyledItemDelegate::editorEvent (this=0x195bdd0, event=0x7ffcd12a67c0, model=0x1945480, option=..., index=...) at itemviews/qstyleditemdelegate.cpp:667
#59 0x00007fa4950f7a1e in ?? () from /usr/lib/x86_64-linux-gnu/libkorganizerprivate.so.5
#60 0x00007fa542240163 in QAbstractItemViewPrivate::sendDelegateEvent (this=this@entry=0x19483c0, index=..., event=event@entry=0x7ffcd12a67c0) at itemviews/qabstractitemview.cpp:4297
#61 0x00007fa542247d0b in QAbstractItemView::edit (this=this@entry=0x1944930, index=..., trigger=trigger@entry=QAbstractItemView::NoEditTriggers, event=event@entry=0x7ffcd12a67c0) at itemviews/qabstractitemview.cpp:2592
#62 0x00007fa5422405e3 in QAbstractItemView::mouseReleaseEvent (this=this@entry=0x1944930, event=event@entry=0x7ffcd12a67c0) at itemviews/qabstractitemview.cpp:1845
#63 0x00007fa54228aaa3 in QTreeView::mouseReleaseEvent (this=0x1944930, event=0x7ffcd12a67c0) at itemviews/qtreeview.cpp:1917
#64 0x00007fa542026f88 in QWidget::event (this=this@entry=0x1944930, event=event@entry=0x7ffcd12a67c0) at kernel/qwidget.cpp:9044
#65 0x00007fa542125b5e in QFrame::event (this=0x1944930, e=0x7ffcd12a67c0) at widgets/qframe.cpp:540
#66 0x00007fa54224b5db in QAbstractItemView::viewportEvent (this=this@entry=0x1944930, event=event@entry=0x7ffcd12a67c0) at itemviews/qabstractitemview.cpp:1685
#67 0x00007fa54228a10c in QTreeView::viewportEvent (this=0x1944930, event=0x7ffcd12a67c0) at itemviews/qtreeview.cpp:1309
#68 0x00007fa54149e412 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0xe6ed20, receiver=receiver@entry=0x19479d0, event=event@entry=0x7ffcd12a67c0) at kernel/qcoreapplication.cpp:1072
#69 0x00007fa541fe403c in QApplicationPrivate::notify_helper (this=this@entry=0xe6ed20, receiver=receiver@entry=0x19479d0, e=e@entry=0x7ffcd12a67c0) at kernel/qapplication.cpp:3712
#70 0x00007fa541fe9c19 in QApplication::notify (this=<optimized out>, receiver=0x19479d0, e=0x7ffcd12a67c0) at kernel/qapplication.cpp:3276
#71 0x00007fa54149e62b in QCoreApplication::notifyInternal (this=0x7ffcd12a71f0, receiver=receiver@entry=0x19479d0, event=event@entry=0x7ffcd12a67c0) at kernel/qcoreapplication.cpp:965
#72 0x00007fa541fe8b32 in QCoreApplication::sendSpontaneousEvent (event=0x7ffcd12a67c0, receiver=0x19479d0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#73 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x19479d0, event=event@entry=0x7ffcd12a67c0, alienWidget=alienWidget@entry=0x19479d0, nativeWidget=0xf495b0, buttonDown=buttonDown@entry=0x7fa542514b20 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2770
#74 0x00007fa54204157b in QWidgetWindow::handleMouseEvent (this=this@entry=0xf7bcf0, event=event@entry=0x7ffcd12a6bd0) at kernel/qwidgetwindow.cpp:555
#75 0x00007fa542043b3b in QWidgetWindow::event (this=0xf7bcf0, event=0x7ffcd12a6bd0) at kernel/qwidgetwindow.cpp:210
#76 0x00007fa541fe405c in QApplicationPrivate::notify_helper (this=this@entry=0xe6ed20, receiver=receiver@entry=0xf7bcf0, e=e@entry=0x7ffcd12a6bd0) at kernel/qapplication.cpp:3716
#77 0x00007fa541fe9516 in QApplication::notify (this=0x7ffcd12a71f0, receiver=0xf7bcf0, e=0x7ffcd12a6bd0) at kernel/qapplication.cpp:3499
#78 0x00007fa54149e62b in QCoreApplication::notifyInternal (this=0x7ffcd12a71f0, receiver=receiver@entry=0xf7bcf0, event=event@entry=0x7ffcd12a6bd0) at kernel/qcoreapplication.cpp:965
#79 0x00007fa5417e0521 in QCoreApplication::sendSpontaneousEvent (event=0x7ffcd12a6bd0, receiver=0xf7bcf0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#80 QGuiApplicationPrivate::processMouseEvent (e=0x1a08da0) at kernel/qguiapplication.cpp:1804
#81 0x00007fa5417e21e5 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x1a08da0) at kernel/qguiapplication.cpp:1596
#82 0x00007fa5417c5f38 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:625
#83 0x00007fa527121f10 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#84 0x00007fa53a1cd127 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#85 0x00007fa53a1cd380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#86 0x00007fa53a1cd42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#87 0x00007fa5414f4a7f in QEventDispatcherGlib::processEvents (this=0xeafaa0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#88 0x00007fa54149bdea in QEventLoop::exec (this=this@entry=0x7ffcd12a6f50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#89 0x00007fa5414a3e8c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#90 0x0000000000404ae9 in main ()

Reported using DrKonqi