Bug 304780

Application: systemsettings (1.0)
KDE Platform Version: 4.8.4 (4.8.4)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-29-generic i686
Distribution: Ubuntu 12.04.1 LTS

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

- Unusual behavior I noticed: It crashed

- Custom settings of the application: Well, I have xscreensaver installed but it wasn't running

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb77c2740 (LWP 6408))]

Thread 2 (Thread 0xb54dbb40 (LWP 6409)):
#0  0x00aaae13 in pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
#1  0x06cb05f4 in pthread_mutex_lock () from /lib/i386-linux-gnu/libc.so.6
#2  0x02e913d0 in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x02e5187c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x02e51faf in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x02e52201 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0x009568e7 in QEventDispatcherGlib::processEvents (this=0xb4b00468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x0092250d in QEventLoop::processEvents (this=0xb54db240, flags=...) at kernel/qeventloop.cpp:149
#8  0x009227a9 in QEventLoop::exec (this=0xb54db240, flags=...) at kernel/qeventloop.cpp:204
#9  0x0080b94c in QThread::exec (this=0x8700820) at thread/qthread.cpp:501
#10 0x008ffb5d in QInotifyFileSystemWatcherEngine::run (this=0x8700820) at io/qfilesystemwatcher_inotify.cpp:248
#11 0x0080ede0 in QThreadPrivate::start (arg=0x8700820) at thread/qthread_unix.cpp:298
#12 0x00aa8d4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#13 0x06ca2ace in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb77c2740 (LWP 6408)):
[KCrash Handler]
#7  0x0171325c in sibling (acolumn=0, arow=7209057, this=0x8bd2f30) at ../../include/QtCore/../../src/corelib/kernel/qabstractitemmodel.h:396
#8  QTreeViewPrivate::viewIndex (this=0x8bd7530, _index=...) at itemviews/qtreeview.cpp:3400
#9  0x022a1e57 in QAccessibleTree::indexOfChild (this=0x8c99158, iface=0x8bd2f28) at itemviews.cpp:535
#10 0x041500f8 in AtSpiAdaptor::pathForInterface(QAccessibleInterface*, int, bool) const () from /usr/lib/i386-linux-gnu/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#11 0x0415282e in AtSpiAdaptor::sendFocusChanged(QAccessibleInterface*, int) const () from /usr/lib/i386-linux-gnu/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#12 0x0415d13c in AtSpiAdaptor::notify(int, QAccessibleInterface*, int) () from /usr/lib/i386-linux-gnu/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#13 0x0413d686 in QSpiAccessibleBridge::notifyAccessibilityUpdate(int, QAccessibleInterface*, int) () from /usr/lib/i386-linux-gnu/qt4/plugins/accessiblebridge/libqspiaccessiblebridge.so
#14 0x016c7ef3 in QAccessible::updateAccessibility (o=0x8a5cac8, who=0, reason=QAccessible::Focus) at accessible/qaccessible_unix.cpp:118
#15 0x01713b48 in QTreeView::currentChanged (this=0x8a5cac8, current=..., previous=...) at itemviews/qtreeview.cpp:3770
#16 0x016cf2e0 in qt_static_metacall (_a=0xbff751d4, _id=20, _o=0x8a5cac8, _c=<optimized out>) at .moc/release-shared/moc_qabstractitemview.cpp:217
#17 QAbstractItemView::qt_static_metacall (_o=0x8a5cac8, _c=QMetaObject::InvokeMetaMethod, _id=20, _a=0xbff751d4) at .moc/release-shared/moc_qabstractitemview.cpp:191
#18 0x0093a6b1 in QMetaObject::activate (sender=0x8add4c0, m=0x1aa1868, local_signal_index=1, argv=0xbff751d4) at kernel/qobject.cpp:3547
#19 0x0172c63d in QItemSelectionModel::currentChanged (this=0x8add4c0, _t1=..., _t2=...) at .moc/release-shared/moc_qitemselectionmodel.cpp:173
#20 0x0172c7bc in QItemSelectionModel::setCurrentIndex (this=0x8add4c0, index=..., command=...) at itemviews/qitemselectionmodel.cpp:1175
#21 0x016ca3d7 in QAbstractItemView::setCurrentIndex (this=0x8a5cac8, index=...) at itemviews/qabstractitemview.cpp:1022
#22 0x017522e8 in QTreeWidget::setCurrentItem (this=0x8a5cac8, item=0x8a68898, column=3) at itemviews/qtreewidget.cpp:2815
#23 0x0278e309 in KScreenSaver::findSavers (this=0x8bcfc48) at ../../../kcontrol/screensaver/scrnsave.cpp:473
#24 0x0093a6b1 in QMetaObject::activate (sender=0x8c57868, m=0xa814d8, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3547
#25 0x0098d625 in QTimer::timeout (this=0x8c57868) at .moc/release-shared/moc_qtimer.cpp:148
#26 0x00943566 in QTimer::timerEvent (this=0x8c57868, e=0xbff759dc) at kernel/qtimer.cpp:280
#27 0x0093eac4 in QObject::event (this=0x8c57868, e=0xbff759dc) at kernel/qobject.cpp:1157
#28 0x0111bed4 in notify_helper (e=0xbff759dc, receiver=0x8c57868, this=0x847d730) at kernel/qapplication.cpp:4559
#29 QApplicationPrivate::notify_helper (this=0x847d730, receiver=0x8c57868, e=0xbff759dc) at kernel/qapplication.cpp:4531
#30 0x0112130d in QApplication::notify (this=0xbff759dc, receiver=0x8c57868, e=0xbff759dc) at kernel/qapplication.cpp:4288
#31 0x00550401 in KApplication::notify (this=0xbff75cec, receiver=0x8c57868, event=0xbff759dc) at ../../kdeui/kernel/kapplication.cpp:311
#32 0x0092397e in QCoreApplication::notifyInternal (this=0xbff75cec, receiver=0x8c57868, event=0xbff759dc) at kernel/qcoreapplication.cpp:876
#33 0x00958990 in sendEvent (event=0xbff759dc, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#34 QTimerInfoList::activateTimers (this=0x8487a74) at kernel/qeventdispatcher_unix.cpp:611
#35 0x009560f8 in timerSourceDispatch (source=0x8487a40) at kernel/qeventdispatcher_glib.cpp:186
#36 timerSourceDispatch (source=0x8487a40) at kernel/qeventdispatcher_glib.cpp:180
#37 0x02e51d86 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#38 0x02e52125 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#39 0x02e52201 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#40 0x00956887 in QEventDispatcherGlib::processEvents (this=0x8454798, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#41 0x011d4aaa in QGuiEventDispatcherGlib::processEvents (this=0x8454798, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#42 0x0092250d in QEventLoop::processEvents (this=0xbff75c44, flags=...) at kernel/qeventloop.cpp:149
#43 0x009227a9 in QEventLoop::exec (this=0xbff75c44, flags=...) at kernel/qeventloop.cpp:204
#44 0x00927eba in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#45 0x01119a74 in QApplication::exec () at kernel/qapplication.cpp:3820
#46 0x080502b8 in main (argc=<error reading variable: Cannot access memory at address 0x2>, argv=<error reading variable: Cannot access memory at address 0x6>) at ../../../systemsettings/app/main.cpp:49

Reported using DrKonqi