Application: kontact (4.12)
KDE Platform Version: 4.12.0
Qt Version: 4.8.4
Operating System: Linux 3.11.0-15-generic x86_64
Distribution: Ubuntu 13.10

-- Information about the crash:
To reproduce this bug, just open Kontact and close it again. Kontact will always crash upon closing (and will, sadly, not remember calendar colours set in between).
This problem appeared a few days ago already with 4.11.3.
After upgrading to 4.12 the problem persists :-(

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 0x7f6e9dc277c0 (LWP 2347))]

Thread 5 (Thread 0x7f6e7eee3700 (LWP 2348)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6e989fe1cd in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f6e989fe209 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f6e95123f6e in start_thread (arg=0x7f6e7eee3700) at pthread_create.c:311
#4  0x00007f6e9b1999cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7f6e3e5d0700 (LWP 2349)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6e9873ebbd in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f6e98a2da76 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f6e95123f6e in start_thread (arg=0x7f6e3e5d0700) at pthread_create.c:311
#4  0x00007f6e9b1999cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7f6e2d4fa700 (LWP 2354)):
#0  0x00007f6e94c8b0ed in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f6e94c8b399 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6e94c4a7f0 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6e94c4b565 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f6e94c4b7ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f6e9b912a76 in QEventDispatcherGlib::processEvents (this=0x7f6e200008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f6e9b8e45ef in QEventLoop::processEvents (this=this@entry=0x7f6e2d4f9db0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f6e9b8e48e5 in QEventLoop::exec (this=this@entry=0x7f6e2d4f9db0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f6e9b7e388f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#9  0x00007f6e9b7e5f2f in QThreadPrivate::start (arg=0x1b2daf0) at thread/qthread_unix.cpp:338
#10 0x00007f6e95123f6e in start_thread (arg=0x7f6e2d4fa700) at pthread_create.c:311
#11 0x00007f6e9b1999cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f6e27781700 (LWP 2355)):
#0  0x00007f6e9b18cf7d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f6e94c4b6a4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6e94c4b7ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6e9b912a76 in QEventDispatcherGlib::processEvents (this=0x7f6e1c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f6e9b8e45ef in QEventLoop::processEvents (this=this@entry=0x7f6e27780d70, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f6e9b8e48e5 in QEventLoop::exec (this=this@entry=0x7f6e27780d70, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f6e9b7e388f in QThread::exec (this=this@entry=0x600b110) at thread/qthread.cpp:542
#7  0x00007f6e9b8c5d13 in QInotifyFileSystemWatcherEngine::run (this=0x600b110) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007f6e9b7e5f2f in QThreadPrivate::start (arg=0x600b110) at thread/qthread_unix.cpp:338
#9  0x00007f6e95123f6e in start_thread (arg=0x7f6e27781700) at pthread_create.c:311
#10 0x00007f6e9b1999cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f6e9dc277c0 (LWP 2347)):
[KCrash Handler]
#6  0x00007f6e9c742f64 in QAbstractScrollArea::horizontalScrollBar (this=0x2593510) at widgets/qabstractscrollarea.cpp:693
#7  0x00007f6e9cfb12a7 in restoreScrollBarState (this=0x2619f80) at ../../kdeui/itemviews/kviewstatesaver.cpp:64
#8  KViewStateSaver::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=<optimized out>, _c=<optimized out>) at ./kviewstatesaver.moc:53
#9  0x00007f6e9b8fddce in QObject::event (this=0x26192c0, e=<optimized out>) at kernel/qobject.cpp:1194
#10 0x00007f6e9c2d6dfc in QApplicationPrivate::notify_helper (this=this@entry=0x18b0c80, receiver=receiver@entry=0x26192c0, e=e@entry=0x23622d0) at kernel/qapplication.cpp:4567
#11 0x00007f6e9c2dd470 in QApplication::notify (this=this@entry=0x7fffa4fabac0, receiver=receiver@entry=0x26192c0, e=e@entry=0x23622d0) at kernel/qapplication.cpp:4353
#12 0x00007f6e9cfe0c6a in KApplication::notify (this=0x7fffa4fabac0, receiver=0x26192c0, event=0x23622d0) at ../../kdeui/kernel/kapplication.cpp:311
#13 0x00007f6e9b8e58bd in QCoreApplication::notifyInternal (this=0x7fffa4fabac0, receiver=receiver@entry=0x26192c0, event=event@entry=0x23622d0) at kernel/qcoreapplication.cpp:946
#14 0x00007f6e9b8e8e1f in sendEvent (event=0x23622d0, receiver=0x26192c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#15 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x18701d0) at kernel/qcoreapplication.cpp:1570
#16 0x00007f6e9b8e92c3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#17 0x00007f6e9b913073 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#18 postEventSourceDispatch (s=0x189e390) at kernel/qeventdispatcher_glib.cpp:279
#19 0x00007f6e94c4b3b6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f6e94c4b708 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f6e94c4b7ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f6e9b912a55 in QEventDispatcherGlib::processEvents (this=0x189e210, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#23 0x00007f6e9c3789d6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007f6e9b8e45ef in QEventLoop::processEvents (this=this@entry=0x7fffa4fab9c0, flags=...) at kernel/qeventloop.cpp:149
#25 0x00007f6e9b8e48e5 in QEventLoop::exec (this=this@entry=0x7fffa4fab9c0, flags=...) at kernel/qeventloop.cpp:204
#26 0x00007f6e9b8e9e5b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#27 0x00007f6e9c2d534c in QApplication::exec () at kernel/qapplication.cpp:3828
#28 0x0000000000403660 in main (argc=1, argv=0x7fffa4fabc08) at ../../../kontact/src/main.cpp:219

The reporter indicates this bug may be a duplicate of or related to bug 328755.

Possible duplicates by query: bug 329304, bug 328755.

Reported using DrKonqi