Application: kontact (5.1.3)

Qt Version: 5.5.1
Frameworks Version: 5.23.0
Operating System: Linux 4.4.0-53-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
1. new email edit window is open
2. klick on select email adress icon, in order to show addressbook list.
3. Kontact crashes while or after selecting an email address from the addressbook

- Unusual behavior I noticed:
heavy CPU load due to baloo re-indexing

The crash can be reproduced sometimes.

-- 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 0x7f2f01566940 (LWP 2857))]

Thread 23 (Thread 0x7f2e33ffc700 (LWP 16297)):
#0  0x00007f2f14030433 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2f140328cb in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f140332cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e20010be0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e33ffbc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x3ac31d0) at thread/qthread_unix.cpp:331
#8  0x00007f2f1485d6ba in start_thread (arg=0x7f2e33ffc700) at pthread_create.c:333
#9  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7f2e315ea700 (LWP 16296)):
#0  0x00007f2f1a822b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2f1403339c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e080010f0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e315e9c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x5f8cd40) at thread/qthread_unix.cpp:331
#7  0x00007f2f1485d6ba in start_thread (arg=0x7f2e315ea700) at pthread_create.c:333
#8  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7f2e5d1e1700 (LWP 5562)):
#0  0x00007f2f140332b4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e4c003800, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#3  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e5d1e0c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x5ef1100) at thread/qthread_unix.cpp:331
#6  0x00007f2f1485d6ba in start_thread (arg=0x7f2e5d1e1700) at pthread_create.c:333
#7  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7f2e6b7fe700 (LWP 5540)):
#0  0x00007f2f14077ae4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2f14032f3a in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f14033400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e58003be0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e6b7fdc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x24d5cf0) at thread/qthread_unix.cpp:331
#8  0x00007f2f1485d6ba in start_thread (arg=0x7f2e6b7fe700) at pthread_create.c:333
#9  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7f2e6bfff700 (LWP 5537)):
#0  0x00007f2f1a81e69d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2f14076740 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f14032e84 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f14033340 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e60004310, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e6bffec80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x61b6990) at thread/qthread_unix.cpp:331
#9  0x00007f2f1485d6ba in start_thread (arg=0x7f2e6bfff700) at pthread_create.c:333
#10 0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7f2e79906700 (LWP 5535)):
#0  socketNotifierSourcePrepare (timeout=0x7f2e79905ac4) at kernel/qeventdispatcher_glib.cpp:67
#1  0x00007f2f1403292d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f140332cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e64004200, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e79905c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x6141dc0) at thread/qthread_unix.cpp:331
#8  0x00007f2f1485d6ba in start_thread (arg=0x7f2e79906700) at pthread_create.c:333
#9  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7f2e7a107700 (LWP 5528)):
#0  0x00007f2f1a822b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2f1403339c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e74004000, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e7a106c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x518a850) at thread/qthread_unix.cpp:331
#7  0x00007f2f1485d6ba in start_thread (arg=0x7f2e7a107700) at pthread_create.c:333
#8  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f2e7a908700 (LWP 5524)):
#0  0x00007f2f1a822b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2f1403339c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e6c004000, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e7a907c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x5e8b400) at thread/qthread_unix.cpp:331
#7  0x00007f2f1485d6ba in start_thread (arg=0x7f2e7a908700) at pthread_create.c:333
#8  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f2e7bfff700 (LWP 5516)):
#0  0x00007f2f14077ac9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2f140332a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e70003000, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e7bffec80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x65ed6d0) at thread/qthread_unix.cpp:331
#7  0x00007f2f1485d6ba in start_thread (arg=0x7f2e7bfff700) at pthread_create.c:333
#8  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f2e90afc700 (LWP 5507)):
#0  0x00007f2f14077ac9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2f14033498 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e80004400, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#3  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e90afbc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x5eb5e00) at thread/qthread_unix.cpp:331
#6  0x00007f2f1485d6ba in start_thread (arg=0x7f2e90afc700) at pthread_create.c:333
#7  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f2e912fd700 (LWP 5505)):
#0  0x00007f2f14033288 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e7c003fe0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#3  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e912fcc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x51d9100) at thread/qthread_unix.cpp:331
#6  0x00007f2f1485d6ba in start_thread (arg=0x7f2e912fd700) at pthread_create.c:333
#7  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f2e91d1c700 (LWP 5497)):
#0  0x00007f2f14077ac9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2f1403335e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e88004200, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e91d1bc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x5279100) at thread/qthread_unix.cpp:331
#7  0x00007f2f1485d6ba in start_thread (arg=0x7f2e91d1c700) at pthread_create.c:333
#8  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f2e5f88f700 (LWP 5171)):
#0  0x00007f2f140303c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2f14032cfa in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f14033340 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e54003480, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e5f88ec80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x52edbc0) at thread/qthread_unix.cpp:331
#8  0x00007f2f1485d6ba in start_thread (arg=0x7f2e5f88f700) at pthread_create.c:333
#9  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f2e5c9e0700 (LWP 2927)):
#0  0x00007f2f1a822b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2f1403339c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e5c9dfc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x4f0c7a0) at thread/qthread_unix.cpp:331
#7  0x00007f2f1485d6ba in start_thread (arg=0x7f2e5c9e0700) at pthread_create.c:333
#8  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f2e9251d700 (LWP 2867)):
#0  0x00007f2f14077ae4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2f14032920 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f140332cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e9251cc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x208b410) at thread/qthread_unix.cpp:331
#8  0x00007f2f1485d6ba in start_thread (arg=0x7f2e9251d700) at pthread_create.c:333
#9  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f2e92d1e700 (LWP 2865)):
#0  0x00007f2f14077ac9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2f14032939 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f140332cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2e8c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2e92d1dc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x20c5b30) at thread/qthread_unix.cpp:331
#8  0x00007f2f1485d6ba in start_thread (arg=0x7f2e92d1e700) at pthread_create.c:333
#9  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f2eb0b4c700 (LWP 2864)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2f187adaa3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f2f18ace541 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f2f1485d6ba in start_thread (arg=0x7f2eb0b4c700) at pthread_create.c:333
#4  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f2eb134d700 (LWP 2863)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2f187adaa3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f2f18ace541 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f2f1485d6ba in start_thread (arg=0x7f2eb134d700) at pthread_create.c:333
#4  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f2eb1b4e700 (LWP 2862)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2f187adaa3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f2f18ace541 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f2f1485d6ba in start_thread (arg=0x7f2eb1b4e700) at pthread_create.c:333
#4  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f2eb236e700 (LWP 2861)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2f187aca74 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f2f18ace541 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f2f1485d6ba in start_thread (arg=0x7f2eb236e700) at pthread_create.c:333
#4  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f2eb47e9700 (LWP 2860)):
#0  0x00007f2f1a822b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2f1403339c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2f1b3657eb in QEventDispatcherGlib::processEvents (this=0x7f2eac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7f2eb47e8c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f2f1b129834 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f2f1b12e7be in QThreadPrivate::start (arg=0x1c79a80) at thread/qthread_unix.cpp:331
#7  0x00007f2f1485d6ba in start_thread (arg=0x7f2eb47e9700) at pthread_create.c:333
#8  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f2ef7fff700 (LWP 2859)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2f18a9e88b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f2f18a9e8c9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f2f1485d6ba in start_thread (arg=0x7f2ef7fff700) at pthread_create.c:333
#4  0x00007f2f1a82e82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f2f01566940 (LWP 2857)):
[KCrash Handler]
#6  QSortFilterProxyModelPrivate::index_to_iterator (this=0x58d2710, proxy_index=...) at itemmodels/qsortfilterproxymodel.cpp:185
#7  QSortFilterProxyModelPrivate::proxy_to_source (proxy_index=..., this=0x58d2710) at itemmodels/qsortfilterproxymodel.cpp:376
#8  QSortFilterProxyModel::mapToSource (proxyIndex=..., this=0x3763820) at itemmodels/qsortfilterproxymodel.cpp:2721
#9  QSortFilterProxyModelPrivate::store_persistent_indexes (this=this@entry=0x58d2710) at itemmodels/qsortfilterproxymodel.cpp:1016
#10 0x00007f2f1b2deabb in QSortFilterProxyModelPrivate::_q_sourceDataChanged (this=<optimized out>, source_top_left=..., source_bottom_right=..., roles=...) at itemmodels/qsortfilterproxymodel.cpp:1200
#11 0x00007f2f1b2e05f8 in QSortFilterProxyModel::qt_static_metacall (_o=_o@entry=0x3763820, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=5, _a=_a@entry=0x7ffe0e1387e0) at .moc/moc_qsortfilterproxymodel.cpp:202
#12 0x00007f2f1b33dd2a in QMetaObject::activate (sender=sender@entry=0x58d2240, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe0e1387e0) at kernel/qobject.cpp:3713
#13 0x00007f2f1b33e537 in QMetaObject::activate (sender=sender@entry=0x58d2240, m=m@entry=0x7f2f1b557ec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe0e1387e0) at kernel/qobject.cpp:3578
#14 0x00007f2f1b3b9e2c in QAbstractItemModel::dataChanged (this=this@entry=0x58d2240, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:548
#15 0x00007f2f1b2dea0d in QSortFilterProxyModelPrivate::_q_sourceDataChanged (this=<optimized out>, source_top_left=..., source_bottom_right=..., roles=...) at itemmodels/qsortfilterproxymodel.cpp:1233
#16 0x00007f2f1b2e05f8 in QSortFilterProxyModel::qt_static_metacall (_o=_o@entry=0x58d2240, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=5, _a=_a@entry=0x7ffe0e138af0) at .moc/moc_qsortfilterproxymodel.cpp:202
#17 0x00007f2f1b33dd2a in QMetaObject::activate (sender=0x571ae20, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe0e138af0) at kernel/qobject.cpp:3713
#18 0x00007f2f1b33e537 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f2f1b557ec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe0e138af0) at kernel/qobject.cpp:3578
#19 0x00007f2f1b3b9e2c in QAbstractItemModel::dataChanged (this=<optimized out>, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:548
#20 0x00007f2f19e5386f in Akonadi::EntityTreeModelPrivate::dataChanged(QModelIndex const&, QModelIndex const&) () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5
#21 0x00007f2f19e56d50 in Akonadi::EntityTreeModelPrivate::itemFetchJobDone(KJob*) () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5
#22 0x00007f2f1b33dd2a in QMetaObject::activate (sender=0x3d516f0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3713
#23 0x00007f2f1c3c21b2 in KJob::result(KJob*, KJob::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#24 0x00007f2f1c3c2d81 in KJob::finishJob(bool) () from /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#25 0x00007f2f19e154e3 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5
#26 0x00007f2f1b33ec01 in QObject::event (this=0x3d516f0, e=<optimized out>) at kernel/qobject.cpp:1239
#27 0x00007f2f1be5505c in QApplicationPrivate::notify_helper (this=this@entry=0x1b6bd20, receiver=receiver@entry=0x3d516f0, e=e@entry=0x3522e80) at kernel/qapplication.cpp:3716
#28 0x00007f2f1be5a516 in QApplication::notify (this=0x7ffe0e139610, receiver=0x3d516f0, e=0x3522e80) at kernel/qapplication.cpp:3499
#29 0x00007f2f1b30f38b in QCoreApplication::notifyInternal (this=0x7ffe0e139610, receiver=0x3d516f0, event=event@entry=0x3522e80) at kernel/qcoreapplication.cpp:965
#30 0x00007f2f1b311786 in QCoreApplication::sendEvent (event=0x3522e80, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#31 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1b69740) at kernel/qcoreapplication.cpp:1593
#32 0x00007f2f1b311c68 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#33 0x00007f2f1b3653c3 in postEventSourceDispatch (s=0x1ba7810) at kernel/qeventdispatcher_glib.cpp:271
#34 0x00007f2f140331a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f2f14033400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f2f140334ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f2f1b3657cf in QEventDispatcherGlib::processEvents (this=0x1bb0380, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#38 0x00007f2f1b30cb4a in QEventLoop::exec (this=this@entry=0x7ffe0e139370, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#39 0x00007f2f1b314bec in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#40 0x0000000000404ae9 in main ()

Possible duplicates by query: bug 371759, bug 362817.

Reported using DrKonqi