Bug 349434

Application: kded4 (4.14.9)
KDE Platform Version: 4.14.9
Qt Version: 4.8.6
Operating System: Linux 4.0.4-202.fc21.x86_64 x86_64
Distribution: "Fedora release 21 (Twenty One)"

-- Information about the crash:
- What I was doing when the application crashed:
Google Chrome open, doing nothing complicated (no WebGL etc).  (I mention this because I sometimes see graphical artifacts when I'm not running other softwares)
This time, I was running an old application compiled against QT4 in a QT5 environment, which may or may not be related.
I'm running KDE5 in the OpenGL 2.0 context, on Fedora 21 (repo at https://copr.fedoraproject.org/coprs/dvratil/plasma-5/) .   Fedora Rawhide is not an option for me, due to backwards compatibility issues (yes, the old software is That Old).

- Unusual behavior I noticed:
Temporary graphical artifacts within both the panel and within the old application's window, seemingly triggering redraws.  This proved to be distracting, but not non-functional.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KDE Daemon (kded4), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[KCrash Handler]
#6  0x00007f6c826c18d7 in raise () at /lib64/libc.so.6
#7  0x00007f6c826c353a in abort () at /lib64/libc.so.6
#8  0x00007f6c8444ba24 in qt_message_output(QtMsgType, char const*) () at /lib64/libQtCore.so.4
#9  0x00007f6c8444bbb9 in qt_message(QtMsgType, char const*, __va_list_tag*) () at /lib64/libQtCore.so.4
#10 0x00007f6c8444c4a1 in qFatal(char const*, ...) () at /lib64/libQtCore.so.4
#11 0x00007f6c6aaa9b78 in Tp::ContactManager::Roster::onContactListContactsUpgraded(Tp::PendingOperation*) () at /lib64/libtelepathy-qt4.so.2
#12 0x00007f6c84574d9c in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () at /lib64/libQtCore.so.4
#13 0x00007f6c6ab6419f in Tp::PendingOperation::finished(Tp::PendingOperation*) () at /lib64/libtelepathy-qt4.so.2
#14 0x00007f6c6ab64291 in Tp::PendingOperation::emitFinished() () at /lib64/libtelepathy-qt4.so.2
#15 0x00007f6c84579491 in QObject::event(QEvent*) () at /lib64/libQtCore.so.4
#16 0x00007f6c83697efc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQtGui.so.4
#17 0x00007f6c8369e958 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQtGui.so.4
#18 0x00007f6c855c6e0a in KApplication::notify(QObject*, QEvent*) () at /lib64/libkdeui.so.5
#19 0x00007f6c8456022d in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQtCore.so.4
#20 0x00007f6c845634f1 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQtCore.so.4
#21 0x00007f6c8458f3ee in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQtCore.so.4
#22 0x00007f6c7ee697fb in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#23 0x00007f6c7ee69b98 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#24 0x00007f6c7ee69c4c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#25 0x00007f6c8458f55e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#26 0x00007f6c8373b176 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtGui.so.4
#27 0x00007f6c8455ed81 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#28 0x00007f6c8455f0e5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQtCore.so.4
#29 0x00007f6c845647c9 in QCoreApplication::exec() () at /lib64/libQtCore.so.4
#30 0x00007f6c732695d9 in kdemain () at /usr/lib64/libkdeinit4_kded4.so
#31 0x000000000040825d in launch(int, char const*, char const*, char const*, int, char const*, bool, char const*, bool, char const*) ()
#32 0x0000000000405a64 in main ()

Reported using DrKonqi