Bug 208337

Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I added the plasma widget Adustable clock to my desktop, and clicked to open the settings dialog, and plasma crash.  This is reproducable, and I think I've seen it with other widgets, but I don't recall which.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 5493)]

Thread 2 (Thread 0x7ff4b0f88950 (LWP 5499)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007ff4d62afd19 in QWaitCondition::wait (this=0x2c3b650, mutex=0x2c3b648, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007ff4d513581c in QHostInfoAgent::run (this=0x2c3b630) at kernel/qhostinfo.cpp:260
#3  0x00007ff4d62aed35 in QThreadPrivate::start (arg=0x2c3b630) at thread/qthread_unix.cpp:188
#4  0x00007ff4d21a33ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007ff4d2d87fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ff4d6869750 (LWP 5493)):
[KCrash Handler]
#5  0x000000000060b580 in QString::shared_null ()
#6  0x00007ff4d63aa0c5 in QObject::connect (sender=0x55c6cc0, signal=0x7ff4b6bd4938 "applyClicked()", receiver=0x550eac0, method=0x7ff4b6bd4926 "configAccepted()", type=Qt::AutoConnection)
    at kernel/qobject.cpp:2490
#7  0x00007ff4b6bc9965 in ClockApplet::createConfigurationInterface (this=0x550eac0, parent=0x55c6cc0) at /build/buildd/kdebase-workspace-4.3.1/libs/plasmaclock/clockapplet.cpp:403
#8  0x00007ff48443333d in ?? () from /usr/lib/kde4/plasma_applet_adjustableclock.so
#9  0x00007ff4cdcbad85 in Plasma::Applet::showConfigurationInterface (this=0x550eac0) at /build/buildd/kde4libs-4.3.1/plasma/applet.cpp:1602
#10 0x00007ff4cdcbdbfa in Plasma::Applet::qt_metacall (this=0x550eac0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffde8a45c0)
    at /build/buildd/kde4libs-4.3.1/obj-x86_64-linux-gnu/plasma/applet.moc:147
#11 0x00007ff4cdd02cc5 in Plasma::PopupApplet::qt_metacall (this=0x550eac0, _c=3569130631, _id=0, _a=0x24) at /build/buildd/kde4libs-4.3.1/obj-x86_64-linux-gnu/plasma/popupapplet.moc:77
#12 0x00007ff4b6bcab22 in ClockApplet::qt_metacall (this=0x550eac0, _c=3569130631, _id=0, _a=0x24) at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/libs/plasmaclock/clockapplet.moc:79
#13 0x00007ff484432235 in ?? () from /usr/lib/kde4/plasma_applet_adjustableclock.so
#14 0x00007ff4d63adea2 in QMetaObject::activate (sender=0x573b410, from_signal_index=<value optimized out>, to_signal_index=6, argv=0x24) at kernel/qobject.cpp:3113
#15 0x00007ff4d3958f37 in QAction::triggered (this=0x550eac0, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#16 0x00007ff4d395a3b0 in QAction::activate (this=0x573b410, event=<value optimized out>) at kernel/qaction.cpp:1160
#17 0x00007ff4d3d6152d in QMenuPrivate::activateCausedStack (this=0x48d4800, causedStack=@0x7fffde8a46e0, action=0x573b410, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:967
#18 0x00007ff4d3d6753e in QMenuPrivate::activateAction (this=0x48d4800, action=0x573b410, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:1060
#19 0x00007ff4d4b45591 in KMenu::mouseReleaseEvent (this=0x7fffde8a6f90, e=0x7fffde8a5080) at /build/buildd/kde4libs-4.3.1/kdeui/widgets/kmenu.cpp:456
#20 0x00007ff4d39b00bf in QWidget::event (this=0x7fffde8a6f90, event=0x7fffde8a5080) at kernel/qwidget.cpp:7549
#21 0x00007ff4d3d69d8b in QMenu::event (this=0x7fffde8a6f90, e=0x7fffde8a5080) at widgets/qmenu.cpp:2353
#22 0x00007ff4d395ef4d in QApplicationPrivate::notify_helper (this=0x1d756f0, receiver=0x7fffde8a6f90, e=0x7fffde8a5080) at kernel/qapplication.cpp:4056
#23 0x00007ff4d39678ea in QApplication::notify (this=<value optimized out>, receiver=0x7fffde8a6f90, e=0x7fffde8a5080) at kernel/qapplication.cpp:3758
#24 0x00007ff4d4a71deb in KApplication::notify (this=0x1d36880, receiver=0x7fffde8a6f90, event=0x7fffde8a5080) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#25 0x00007ff4d63986ac in QCoreApplication::notifyInternal (this=0x1d36880, receiver=0x7fffde8a6f90, event=0x7fffde8a5080) at kernel/qcoreapplication.cpp:610
#26 0x00007ff4d3966b38 in QApplicationPrivate::sendMouseEvent (receiver=0x7fffde8a6f90, event=0x7fffde8a5080, alienWidget=0x0, nativeWidget=0x7fffde8a6f90, buttonDown=<value optimized out>, 
    lastMouseReceiver=@0x7ff4d4396010) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#27 0x00007ff4d39d0cd4 in QETWidget::translateMouseEvent (this=0x7fffde8a6f90, event=<value optimized out>) at kernel/qapplication_x11.cpp:4343
#28 0x00007ff4d39cfb53 in QApplication::x11ProcessEvent (this=0x1d36880, event=0x7fffde8a6c00) at kernel/qapplication_x11.cpp:3550
#29 0x00007ff4d39f8454 in x11EventSourceDispatch (s=0x1d78e00, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#30 0x00007ff4d23f220a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#31 0x00007ff4d23f58e0 in ?? () from /usr/lib/libglib-2.0.so.0
#32 0x00007ff4d23f5a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#33 0x00007ff4d63c1a8f in QEventDispatcherGlib::processEvents (this=0x1d75200, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#34 0x00007ff4d39f7bdf in QGuiEventDispatcherGlib::processEvents (this=0x550eac0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#35 0x00007ff4d6396f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -561352976}) at kernel/qeventloop.cpp:149
#36 0x00007ff4d6397314 in QEventLoop::exec (this=0x7fffde8a6f30, flags={i = -561352880}) at kernel/qeventloop.cpp:201
#37 0x00007ff4d3d69be5 in QMenu::exec (this=<value optimized out>, p=@0x7fffde8a7010, action=0x0) at widgets/qmenu.cpp:1993
#38 0x00007ff4cdccf140 in Plasma::ContainmentPrivate::showContextMenu (this=0x2164700, point=<value optimized out>, screenPos=@0x7fffde8a7010, includeApplet=true)
    at /build/buildd/kde4libs-4.3.1/plasma/containment.cpp:655
#39 0x00007ff4cdccf24e in Plasma::Containment::contextMenuEvent (this=0x207b960, event=0x7fffde8a76f0) at /build/buildd/kde4libs-4.3.1/plasma/containment.cpp:526
#40 0x00007ff4d3f03b3d in QGraphicsItem::sceneEvent (this=0x207b970, event=0x7ff4d4bc9c87) at graphicsview/qgraphicsitem.cpp:5000
#41 0x00007ff4d3f358d6 in QGraphicsScene::contextMenuEvent (this=<value optimized out>, contextMenuEvent=0x7fffde8a76f0) at graphicsview/qgraphicsscene.cpp:3956
#42 0x00007ff4d3f367f5 in QGraphicsScene::event (this=0x1e44e30, event=0x7fffde8a76f0) at graphicsview/qgraphicsscene.cpp:3766
#43 0x00007ff4d395ef4d in QApplicationPrivate::notify_helper (this=0x1d756f0, receiver=0x1e44e30, e=0x7fffde8a76f0) at kernel/qapplication.cpp:4056
#44 0x00007ff4d396718a in QApplication::notify (this=0x1d36880, receiver=0x1e44e30, e=0x7fffde8a76f0) at kernel/qapplication.cpp:4021
#45 0x00007ff4d4a71deb in KApplication::notify (this=0x1d36880, receiver=0x1e44e30, event=0x7fffde8a76f0) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#46 0x00007ff4d63986ac in QCoreApplication::notifyInternal (this=0x1d36880, receiver=0x1e44e30, event=0x7fffde8a76f0) at kernel/qcoreapplication.cpp:610
#47 0x00007ff4d3f42473 in QGraphicsView::contextMenuEvent (this=0x35ea2c0, event=0x7fffde8a7e50) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#48 0x00007ff4d39b0594 in QWidget::event (this=0x35ea2c0, event=0x7fffde8a7e50) at kernel/qwidget.cpp:7708
#49 0x00007ff4d3d22f0b in QFrame::event (this=0x35ea2c0, e=0x7fffde8a7e50) at widgets/qframe.cpp:559
#50 0x00007ff4d3f4730b in QGraphicsView::viewportEvent (this=0x35ea2c0, event=0x7fffde8a7e50) at graphicsview/qgraphicsview.cpp:2919
#51 0x00007ff4d63979b8 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x35fd100, event=0x7fffde8a7e50) at kernel/qcoreapplication.cpp:726
#52 0x00007ff4d395ef1c in QApplicationPrivate::notify_helper (this=0x1d756f0, receiver=0x35fd100, e=0x7fffde8a7e50) at kernel/qapplication.cpp:4052
#53 0x00007ff4d396762a in QApplication::notify (this=<value optimized out>, receiver=0x35fd100, e=0x7fffde8a7e50) at kernel/qapplication.cpp:3845
#54 0x00007ff4d4a71deb in KApplication::notify (this=0x1d36880, receiver=0x35fd100, event=0x7fffde8a7e50) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#55 0x00007ff4d63986ac in QCoreApplication::notifyInternal (this=0x1d36880, receiver=0x35fd100, event=0x7fffde8a7e50) at kernel/qcoreapplication.cpp:610
#56 0x00007ff4d39d115a in QETWidget::translateMouseEvent (this=0x35ea2c0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4415
#57 0x00007ff4d39cfb53 in QApplication::x11ProcessEvent (this=0x1d36880, event=0x7fffde8a9a00) at kernel/qapplication_x11.cpp:3550
#58 0x00007ff4d39f8454 in x11EventSourceDispatch (s=0x1d78e00, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#59 0x00007ff4d23f220a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#60 0x00007ff4d23f58e0 in ?? () from /usr/lib/libglib-2.0.so.0
#61 0x00007ff4d23f5a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#62 0x00007ff4d63c1a8f in QEventDispatcherGlib::processEvents (this=0x1d75200, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#63 0x00007ff4d39f7bdf in QGuiEventDispatcherGlib::processEvents (this=0x550eac0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#64 0x00007ff4d6396f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -561341200}) at kernel/qeventloop.cpp:149
#65 0x00007ff4d6397314 in QEventLoop::exec (this=0x7fffde8a9d30, flags={i = -561341120}) at kernel/qeventloop.cpp:201
#66 0x00007ff4d63995e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#67 0x00007ff4ca2d83eb in kdemain (argc=1, argv=0x1d1b000) at /build/buildd/kdebase-workspace-4.3.1/plasma/shells/desktop/main.cpp:50
#68 0x0000000000407215 in launch (argc=1, _name=0x1d29d98 "/usr/bin/plasma-desktop", args=<value optimized out>, cwd=0x0, envc=0, envs=0x1d29db8 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a3a1 "0") at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:677
#69 0x0000000000407a38 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1169
#70 0x0000000000407fe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1362
#71 0x0000000000408b26 in main (argc=2, argv=0x7fffde8aabd8, envp=0x7fffde8aabf0) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1793

Reported using DrKonqi