I test Fedora 21 rawhide and today I have a bug : when I want log my user I have a segmentation fault.

Here the crash-log :  


Application: plasma-desktop (4.11.8)
KDE Platform Version: 4.13.0
Qt Version: 4.8.6
Operating System: Linux 3.15.0-0.rc2.git0.1.fc21.x86_64 x86_64
Distribution: "Fedora release 21 (Rawhide)"

-- Information about the crash:
<Indiquez-nous en détails ce que vous faisiez lors du plantage de l'application.>

The crash can be reproduced every time.

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
gobject.pyc: gdb was not built with custom backtrace support, disabling.
[Current thread is 1 (Thread 0x7f797d809900 (LWP 914))]

Thread 2 (Thread 0x7f7963f35700 (LWP 919)):
#0  0x0000003e93a0be00 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f7981f5043a in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /lib64/libQtScript.so.4
#2  0x00007f7981f50469 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /lib64/libQtScript.so.4
#3  0x0000003e93a07555 in start_thread () from /lib64/libpthread.so.0
#4  0x0000003e92f04e2d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f797d809900 (LWP 914)):
[KCrash Handler]
#5  0x00007f7981eeaf18 in QTJSC::JSGlobalData::storeVPtrs() () from /lib64/libQtScript.so.4
#6  0x00007f7981ee0103 in QTJSC::initializeThreading() () from /lib64/libQtScript.so.4
#7  0x00007f7981f94a98 in QScriptEnginePrivate::QScriptEnginePrivate() () from /lib64/libQtScript.so.4
#8  0x00007f7981f9596e in QScriptEngine::QScriptEngine() () from /lib64/libQtScript.so.4
#9  0x00007f798151f44f in QDeclarativeScriptEngine::QDeclarativeScriptEngine(QDeclarativeEnginePrivate*) () from /lib64/libQtDeclarative.so.4
#10 0x00007f798152598b in QDeclarativeEnginePrivate::QDeclarativeEnginePrivate(QDeclarativeEngine*) () from /lib64/libQtDeclarative.so.4
#11 0x00007f7981525c52 in QDeclarativeEngine::QDeclarativeEngine(QObject*) () from /lib64/libQtDeclarative.so.4
#12 0x0000003eb55fa00c in Plasma::DeclarativeWidget::DeclarativeWidget(QGraphicsWidget*) () from /lib64/libplasma.so.3
#13 0x00007f79653013ac in DeclarativeAppletScript::init() () from /usr/lib64/kde4/plasma_appletscript_declarative.so
#14 0x0000003eb551ad95 in Plasma::Applet::init() () from /lib64/libplasma.so.3
#15 0x0000003eb552c175 in Plasma::ContainmentPrivate::initApplets() () from /lib64/libplasma.so.3
#16 0x0000003eb553cc5c in Plasma::CoronaPrivate::importLayout(KConfigBase const&, bool) () from /lib64/libplasma.so.3
#17 0x0000003eb553dc8a in Plasma::Corona::loadLayout(QString const&) () from /lib64/libplasma.so.3
#18 0x0000003eb553dd74 in Plasma::Corona::initializeLayout(QString const&) () from /lib64/libplasma.so.3
#19 0x00007f79822d32f7 in PlasmaApp::corona(bool) () from /lib64/libkdeinit4_plasma-desktop.so
#20 0x00007f79822d3794 in PlasmaApp::setupDesktop() () from /lib64/libkdeinit4_plasma-desktop.so
#21 0x00007f79822d8d85 in PlasmaApp::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [clone .part.83] () from /lib64/libkdeinit4_plasma-desktop.so
#22 0x00007f79803aa481 in QObject::event(QEvent*) () from /lib64/libQtCore.so.4
#23 0x00007f797f6e73a3 in QApplication::event(QEvent*) () from /lib64/libQtGui.so.4
#24 0x00007f797f6e203c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQtGui.so.4
#25 0x00007f797f6e8ae8 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQtGui.so.4
#26 0x0000003ea204ec7a in KApplication::notify(QObject*, QEvent*) () from /lib64/libkdeui.so.5
#27 0x00007f7980390f9d in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib64/libQtCore.so.4
#28 0x00007f7980394289 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib64/libQtCore.so.4
#29 0x00007f79803c0663 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQtCore.so.4
#30 0x0000003e95e499aa in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#31 0x0000003e95e49cf8 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#32 0x0000003e95e49dac in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#33 0x00007f79803c07ad in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#34 0x00007f797f785856 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtGui.so.4
#35 0x00007f798038fac1 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#36 0x00007f798038fe25 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#37 0x00007f7980395577 in QCoreApplication::exec() () from /lib64/libQtCore.so.4
#38 0x00007f79822b9612 in kdemain () from /lib64/libkdeinit4_plasma-desktop.so
#39 0x0000003e92e200c0 in __libc_start_main () from /lib64/libc.so.6
#40 0x000000000040096e in _start ()