Application: plasma-desktop (0.3)
KDE Platform Version: 4.5.3 (KDE 4.5.3)
Qt Version: 4.7.0
Operating System: Linux 2.6.32-34-generic x86_64
Distribution: Ubuntu 10.04.3 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Just after login I tried adding an object

- Unusual behavior I noticed:
Plasma crashed and recovered without adding anything to the desktop. I tried again but tihs time plasma crashed with a blank screen so I had to restart kdm process from console

The crash can be reproduced every time.

-- Backtrace:
Application: Spazio di lavoro di Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f8984760780 (LWP 23608))]

Thread 4 (Thread 0x7f8963f4d700 (LWP 23609)):
#0  0x00007f8984070ff3 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f898169b3ed in QProcessManager::run (this=0x7f89819eff40) at io/qprocess_unix.cpp:245
#2  0x00007f89815cc2ee in QThreadPrivate::start (arg=0x7f89819eff40) at thread/qthread_unix.cpp:266
#3  0x00007f898133a9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#4  0x00007f898407870d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f8961883700 (LWP 23613)):
#0  0x00007f898406bf93 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f8978c714a9 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f8978c718fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f89816eb1d6 in QEventDispatcherGlib::processEvents (this=0x1bbcc70, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:417
#4  0x00007f89816bddd2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007f89816be1bc in QEventLoop::exec (this=0x7f8961882d90, flags=) at kernel/qeventloop.cpp:201
#6  0x00007f89815c936d in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#7  0x00007f898169db48 in QInotifyFileSystemWatcherEngine::run (this=0x1bbc100) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f89815cc2ee in QThreadPrivate::start (arg=0x1bbc100) at thread/qthread_unix.cpp:266
#9  0x00007f898133a9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#10 0x00007f898407870d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f895572f700 (LWP 23853)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f897e9f57e4 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f897ed00160) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f897e9f5819 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f897ed0e234) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f898133a9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#4  0x00007f898407870d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f8984760780 (LWP 23608)):
[KCrash Handler]
#6  Kephal::Screen::geom (this=0x0) at ../../../../libs/kephal/kephal/screens.cpp:89
#7  0x00007f898436981a in PlasmaApp::showController (this=0xee99f0, screen=-1, containment=0x16dbaa0, widgetExplorerMode=true) at ../../../../plasma/desktop/shell/plasmaapp.cpp:527
#8  0x00007f898434d994 in DesktopView::qt_metacall (this=0x13fa010, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffccd17420) at ./desktopview.moc:104
#9  0x00007f89816d6da7 in QMetaObject::activate (sender=0x16dbaa0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xfdea40) at kernel/qobject.cpp:3280
#10 0x00007f8983b92565 in Plasma::Containment::showAddWidgetsInterface (this=0x0, _t1=<value optimized out>) at ./containment.moc:215
#11 0x00007f8983b9258a in Plasma::ContainmentPrivate::triggerShowAddWidgets (this=<value optimized out>) at ../../plasma/containment.cpp:2238
#12 0x00007f8983ba28eb in Plasma::Containment::qt_metacall (this=0x16dbaa0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffccd175b0) at ./containment.moc:152
#13 0x00007f8968ee1550 in DefaultDesktop::qt_metacall (this=0x0, _c=QMetaObject::InvokeMetaMethod, _id=-48, _a=0xfdea40) at ./desktop.moc:78
#14 0x00007f89816d6da7 in QMetaObject::activate (sender=0x15841b0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xfdea40) at kernel/qobject.cpp:3280
#15 0x00007f8980806002 in QAction::triggered (this=0x0, _t1=false) at .moc/release-shared/moc_qaction.cpp:263
#16 0x00007f89808076fb in QAction::activate (this=0x15841b0, event=<value optimized out>) at kernel/qaction.cpp:1256
#17 0x00007f8980c69131 in QMenuPrivate::activateCausedStack (this=<value optimized out>, causedStack=..., action=0x15841b0, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:993
#18 0x00007f8980c6eada in QMenuPrivate::activateAction (this=0x1f32940, action=0x15841b0, action_e=QAction::Trigger, self=<value optimized out>) at widgets/qmenu.cpp:1085
#19 0x00007f898245843e in KMenu::mouseReleaseEvent (this=0x7fffccd18eb0, e=0x0) at ../../kdeui/widgets/kmenu.cpp:471
#20 0x00007f898086348e in QWidget::event (this=0x7fffccd18eb0, event=0x7fffccd18200) at kernel/qwidget.cpp:8187
#21 0x00007f8980c70c5b in QMenu::event (this=0x7fffccd18eb0, e=0x7fffccd18200) at widgets/qmenu.cpp:2410
#22 0x00007f898080d6ec in QApplicationPrivate::notify_helper (this=0xf00710, receiver=0x7fffccd18eb0, e=0x7fffccd18200) at kernel/qapplication.cpp:4396
#23 0x00007f89808139fe in QApplication::notify (this=0xee99f0, receiver=0x7fffccd18eb0, e=0x7fffccd18200) at kernel/qapplication.cpp:3959
#24 0x00007f8982377926 in KApplication::notify (this=0xee99f0, receiver=0x7fffccd18eb0, event=0x7fffccd18200) at ../../kdeui/kernel/kapplication.cpp:310
#25 0x00007f89816bf0ac in QCoreApplication::notifyInternal (this=0xee99f0, receiver=0x7fffccd18eb0, event=0x7fffccd18200) at kernel/qcoreapplication.cpp:732
#26 0x00007f89808124ae in QCoreApplication::sendEvent (receiver=0x7fffccd18eb0, event=0x7fffccd18200, alienWidget=0x0, nativeWidget=0x7fffccd18eb0, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>, spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#27 QApplicationPrivate::sendMouseEvent (receiver=0x7fffccd18eb0, event=0x7fffccd18200, alienWidget=0x0, nativeWidget=0x7fffccd18eb0, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>, spontaneous=true) at kernel/qapplication.cpp:3058
#28 0x00007f898089591d in QETWidget::translateMouseEvent (this=0x7fffccd18eb0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4337
#29 0x00007f8980893ddc in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffccd18b20) at kernel/qapplication_x11.cpp:3536
#30 0x00007f89808c0012 in x11EventSourceDispatch (s=0xf03df0, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#31 0x00007f8978c6d8c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#32 0x00007f8978c71748 in ?? () from /lib/libglib-2.0.so.0
#33 0x00007f8978c718fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#34 0x00007f89816eb183 in QEventDispatcherGlib::processEvents (this=0xece860, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:415
#35 0x00007f89808bf97e in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#36 0x00007f89816bddd2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#37 0x00007f89816be1bc in QEventLoop::exec (this=0x7fffccd18e50, flags=) at kernel/qeventloop.cpp:201
#38 0x00007f8980c6c235 in QMenu::exec (this=0x7fffccd18eb0, p=<value optimized out>, action=0x0) at widgets/qmenu.cpp:2054
#39 0x00007f89686a099e in ContextMenu::contextEvent (this=0x16e93e0, event=<value optimized out>) at ../../../../../plasma/generic/containmentactions/contextmenu/menu.cpp:139
#40 0x00007f8983b9897b in Plasma::Containment::mousePressEvent (this=<value optimized out>, event=0x7fffccd19a00) at ../../plasma/containment.cpp:587
#41 0x00007f8980e3150b in QGraphicsItem::sceneEvent (this=0x16dbab0, event=0x0) at graphicsview/qgraphicsitem.cpp:6666
#42 0x00007f8980e49118 in QGraphicsScenePrivate::sendMouseEvent (this=0xffc8c0, mouseEvent=0x7fffccd19a00) at graphicsview/qgraphicsscene.cpp:1285
#43 0x00007f8980e5e011 in QGraphicsScenePrivate::mousePressEventHandler (this=0xffc8c0, mouseEvent=0x7fffccd19a00) at graphicsview/qgraphicsscene.cpp:1410
#44 0x00007f8980e5e584 in QGraphicsScene::mousePressEvent (this=<value optimized out>, mouseEvent=0x7fffccd19a00) at graphicsview/qgraphicsscene.cpp:4057
#45 0x00007f8980e5d56f in QGraphicsScene::event (this=0xff7b00, event=0x7fffccd19a00) at graphicsview/qgraphicsscene.cpp:3441
#46 0x00007f898080d6ec in QApplicationPrivate::notify_helper (this=0xf00710, receiver=0xff7b00, e=0x7fffccd19a00) at kernel/qapplication.cpp:4396
#47 0x00007f89808131dd in QApplication::notify (this=0xee99f0, receiver=0xff7b00, e=0x7fffccd19a00) at kernel/qapplication.cpp:4277
#48 0x00007f8982377926 in KApplication::notify (this=0xee99f0, receiver=0xff7b00, event=0x7fffccd19a00) at ../../kdeui/kernel/kapplication.cpp:310
#49 0x00007f89816bf0ac in QCoreApplication::notifyInternal (this=0xee99f0, receiver=0xff7b00, event=0x7fffccd19a00) at kernel/qcoreapplication.cpp:732
#50 0x00007f8980e7ca4f in QGraphicsView::mousePressEvent (this=0x13fa010, event=0x7fffccd1a420) at graphicsview/qgraphicsview.cpp:3160
#51 0x00007f8980863475 in QWidget::event (this=0x13fa010, event=0x7fffccd1a420) at kernel/qwidget.cpp:8183
#52 0x00007f8980c29e76 in QFrame::event (this=0x13fa010, e=0x7fffccd1a420) at widgets/qframe.cpp:557
#53 0x00007f8980e79afb in QGraphicsView::viewportEvent (this=0x13fa010, event=0x7fffccd1a420) at graphicsview/qgraphicsview.cpp:2862
#54 0x00007f89816be8d7 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x17e4580, event=0x7fffccd1a420) at kernel/qcoreapplication.cpp:847
#55 0x00007f898080d6bc in QApplicationPrivate::notify_helper (this=0xf00710, receiver=0x17e4580, e=0x7fffccd1a420) at kernel/qapplication.cpp:4392
#56 0x00007f89808139fe in QApplication::notify (this=0xee99f0, receiver=0x17e4580, e=0x7fffccd1a420) at kernel/qapplication.cpp:3959
#57 0x00007f8982377926 in KApplication::notify (this=0xee99f0, receiver=0x17e4580, event=0x7fffccd1a420) at ../../kdeui/kernel/kapplication.cpp:310
#58 0x00007f89816bf0ac in QCoreApplication::notifyInternal (this=0xee99f0, receiver=0x17e4580, event=0x7fffccd1a420) at kernel/qcoreapplication.cpp:732
#59 0x00007f89808124ae in QCoreApplication::sendEvent (receiver=0x17e4580, event=0x7fffccd1a420, alienWidget=0x17e4580, nativeWidget=0x13fa010, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>, spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#60 QApplicationPrivate::sendMouseEvent (receiver=0x17e4580, event=0x7fffccd1a420, alienWidget=0x17e4580, nativeWidget=0x13fa010, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>, spontaneous=true) at kernel/qapplication.cpp:3058
#61 0x00007f89808954a5 in QETWidget::translateMouseEvent (this=0x13fa010, event=<value optimized out>) at kernel/qapplication_x11.cpp:4403
#62 0x00007f8980893ddc in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffccd1ad40) at kernel/qapplication_x11.cpp:3536
#63 0x00007f89808c0012 in x11EventSourceDispatch (s=0xf03df0, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#64 0x00007f8978c6d8c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#65 0x00007f8978c71748 in ?? () from /lib/libglib-2.0.so.0
#66 0x00007f8978c718fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#67 0x00007f89816eb183 in QEventDispatcherGlib::processEvents (this=0xece860, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:415
#68 0x00007f89808bf97e in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#69 0x00007f89816bddd2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#70 0x00007f89816be1bc in QEventLoop::exec (this=0x7fffccd1b070, flags=) at kernel/qeventloop.cpp:201
#71 0x00007f89816c226b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#72 0x00007f8984352083 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/desktop/shell/main.cpp:118
#73 0x00007f8983fb0c4d in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=0x7fffccd1b448) at libc-start.c:226
#74 0x00000000004006c9 in _start ()

This bug may be a duplicate of or related to bug 255173.

Possible duplicates by query: bug 262514, bug 255173.

Reported using DrKonqi