Bug 327789

Application: kcmshell4 (4.10.5)
KDE Platform Version: 4.10.5
Qt Version: 4.8.4
Operating System: Linux 3.8.0-26-generic i686
Distribution: Linux Mint 15 Olivia

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

I was trying to set the screen saver in the screen locker section and when I clicked on screen saver it crashed

The crash can be reproduced every time.

-- Backtrace:
Application: KDE Control Module (kcmshell4), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb55f1740 (LWP 2346))]

Thread 2 (Thread 0xa8ba2b40 (LWP 2349)):
#0  0xb59e6de3 in pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
#1  0xb7636b94 in pthread_mutex_lock () from /lib/i386-linux-gnu/libc.so.6
#2  0xb5913d30 in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb58d028e in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb58d0750 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb58d0831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb6c43c3f in QEventDispatcherGlib::processEvents (this=0xa8200468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0xb6c103ec in QEventLoop::processEvents (this=this@entry=0xa8ba2228, flags=...) at kernel/qeventloop.cpp:149
#8  0xb6c106e1 in QEventLoop::exec (this=this@entry=0xa8ba2228, flags=...) at kernel/qeventloop.cpp:204
#9  0xb6afbfec in QThread::exec (this=this@entry=0x99dbc18) at thread/qthread.cpp:542
#10 0xb6beff2d in QInotifyFileSystemWatcherEngine::run (this=0x99dbc18) at io/qfilesystemwatcher_inotify.cpp:256
#11 0xb6afeb18 in QThreadPrivate::start (arg=0x99dbc18) at thread/qthread_unix.cpp:338
#12 0xb59e4d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#13 0xb7628fee in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb55f1740 (LWP 2346)):
[KCrash Handler]
#7  QX11PixmapData::fromImage (this=0x9a70250, img=..., flags=...) at image/qpixmap_x11.cpp:1105
#8  0xb632c78f in QRasterWindowSurface::flush (this=0x9862d38, widget=0x98a7560, rgn=..., offset=...) at painting/qwindowsurface_raster.cpp:265
#9  0xb6347907 in qt_flush (tlwOffset=..., tlw=<optimized out>, windowSurface=<optimized out>, region=..., widget=<optimized out>) at painting/qbackingstore.cpp:117
#10 QWidgetBackingStore::flush (this=0x9862e58, widget=0x983e0c0, surface=0x9862d38) at painting/qbackingstore.cpp:1445
#11 0xb6349127 in QWidgetBackingStore::sync (this=0x9862e58) at painting/qbackingstore.cpp:1376
#12 0xb614854b in QWidgetPrivate::syncBackingStore (this=0x9861228) at kernel/qwidget.cpp:1896
#13 0xb615698a in QWidget::event (this=0x983e0c0, event=0xbfc7a974) at kernel/qwidget.cpp:8679
#14 0xb60ffc7c in QApplicationPrivate::notify_helper (this=0x971a410, receiver=0x983e0c0, e=0xbfc7a974) at kernel/qapplication.cpp:4567
#15 0xb6102bfa in QApplication::notify (this=0x971a410, receiver=0x983e0c0, e=0xbfc7a974) at kernel/qapplication.cpp:4532
#16 0xb72ab491 in KApplication::notify (this=0xbfc7b970, receiver=0x983e0c0, event=0xbfc7a974) at ../../kdeui/kernel/kapplication.cpp:311
#17 0xb6c1190e in QCoreApplication::notifyInternal (this=0xbfc7b970, receiver=receiver@entry=0x983e0c0, event=event@entry=0xbfc7a974) at kernel/qcoreapplication.cpp:946
#18 0xb6349c39 in sendEvent (event=0xbfc7a970, receiver=0x983e0c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#19 sendUpdateRequest (updateImmediately=true, widget=0x983e0c0) at painting/qbackingstore.cpp:534
#20 QWidgetBackingStore::markDirty (this=0x9862e58, rect=..., widget=widget@entry=0x98b1008, updateImmediately=updateImmediately@entry=true, invalidateBuffer=invalidateBuffer@entry=false) at painting/qbackingstore.cpp:722
#21 0xb614926a in repaint (rect=..., this=0x98b1008) at kernel/qwidget.cpp:10481
#22 QWidget::repaint (this=0x98b1008, rect=...) at kernel/qwidget.cpp:10459
#23 0xb6149381 in QWidget::repaint (this=this@entry=0x98b1008) at kernel/qwidget.cpp:10431
#24 0xb6520176 in QAbstractButtonPrivate::click (this=this@entry=0x988b980) at widgets/qabstractbutton.cpp:536
#25 0xb6520456 in QAbstractButton::mouseReleaseEvent (this=0x98b1008, e=0xbfc7b124) at widgets/qabstractbutton.cpp:1123
#26 0xb6156710 in QWidget::event (this=0x98b1008, event=0xbfc7b124) at kernel/qwidget.cpp:8375
#27 0xb65212f2 in QAbstractButton::event (this=this@entry=0x98b1008, e=e@entry=0xbfc7b124) at widgets/qabstractbutton.cpp:1082
#28 0xb65c1c78 in QRadioButton::event (this=0x98b1008, e=0xbfc7b124) at widgets/qradiobutton.cpp:266
#29 0xb60ffc7c in QApplicationPrivate::notify_helper (this=0x971a410, receiver=0x98b1008, e=0xbfc7b124) at kernel/qapplication.cpp:4567
#30 0xb6103587 in QApplication::notify (this=0x971a410, receiver=0x98b1008, e=0xbfc7b124) at kernel/qapplication.cpp:4110
#31 0xb72ab491 in KApplication::notify (this=0xbfc7b970, receiver=0x98b1008, event=0xbfc7b124) at ../../kdeui/kernel/kapplication.cpp:311
#32 0xb6c1190e in QCoreApplication::notifyInternal (this=0xbfc7b970, receiver=receiver@entry=0x98b1008, event=event@entry=0xbfc7b124) at kernel/qcoreapplication.cpp:946
#33 0xb6106823 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#34 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x98b1008, event=event@entry=0xbfc7b124, alienWidget=alienWidget@entry=0x0, nativeWidget=nativeWidget@entry=0x98b1008, buttonDown=buttonDown@entry=0xb6a92d14 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#35 0xb6188735 in QETWidget::translateMouseEvent (this=0x98b1008, event=0xbfc7b54c) at kernel/qapplication_x11.cpp:4631
#36 0xb6187525 in QApplication::x11ProcessEvent (this=0xbfc7b970, event=0xbfc7b54c) at kernel/qapplication_x11.cpp:3746
#37 0xb61b6904 in x11EventSourceDispatch (s=0x9716188, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#38 0xb58d03b3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#39 0xb58d0750 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#40 0xb58d0831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#41 0xb6c43c21 in QEventDispatcherGlib::processEvents (this=this@entry=0x96f6b08, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#42 0xb61b6a0a in QGuiEventDispatcherGlib::processEvents (this=0x96f6b08, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#43 0xb6c103ec in QEventLoop::processEvents (this=this@entry=0xbfc7b848, flags=...) at kernel/qeventloop.cpp:149
#44 0xb6c106e1 in QEventLoop::exec (this=this@entry=0xbfc7b848, flags=...) at kernel/qeventloop.cpp:204
#45 0xb6640bbd in QDialog::exec (this=this@entry=0x983e0c0) at dialogs/qdialog.cpp:554
#46 0xb7709a85 in kdemain (_argc=2, _argv=0xbfc7ba54) at ../../kcmshell/main.cpp:297
#47 0x0804855b in main (argc=2, argv=0xbfc7ba54) at kcmshell4_dummy.cpp:3

Possible duplicates by query: bug 323682, bug 320940.

Reported using DrKonqi