Bug 258458

Summary: crashed on program launch after search
Product: [Unmaintained] plasma4 Reporter: Scott <bugs.kde.org.vtj1a>
Component: plasma-netbookAssignee: Marco Martin <notmart>
Status: RESOLVED DUPLICATE    
Severity: crash CC: dosapph, kde
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: New crash information added by DrKonqi

Description Scott 2010-12-01 03:04:52 UTC 
Application: plasma-netbook (0.1)
KDE Platform Version: 4.5.1 (KDE 4.5.1)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-23-generic i686
Distribution: Ubuntu 10.10

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

just installed opera
in the netbook interface I used search to located the program and launch it.
Plasma then crashed, and did not launch program.
Next attempt was successful.

-- Backtrace:
Application: Plasma Netbook (plasma-netbook), signal: Segmentation fault
[Current thread is 1 (Thread 0xb788cad0 (LWP 1784))]

Thread 7 (Thread 0xaf5f9b70 (LWP 1811)):
#0  0x065063e8 in ?? () from /lib/libglib-2.0.so.0
#1  0x06506848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#2  0x06fe259f in QEventDispatcherGlib::processEvents (this=0x928b370, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#3  0x06fb2609 in QEventLoop::processEvents (this=0xaf5f9280, flags=) at kernel/qeventloop.cpp:149
#4  0x06fb2a8a in QEventLoop::exec (this=0xaf5f9280, flags=...) at kernel/qeventloop.cpp:201
#5  0x06eaeb7e in QThread::exec (this=0x9267d88) at thread/qthread.cpp:490
#6  0x06f9135b in QInotifyFileSystemWatcherEngine::run (this=0x9267d88) at io/qfilesystemwatcher_inotify.cpp:248
#7  0x06eb1df9 in QThreadPrivate::start (arg=0x9267d88) at thread/qthread_unix.cpp:266
#8  0x003a9cc9 in start_thread () from /lib/libpthread.so.0
#9  0x0069c6be in clone () from /lib/libc.so.6

Thread 6 (Thread 0xae5efb70 (LWP 1818)):
#0  0x0039f416 in __kernel_vsyscall ()
#1  0x003ae4dc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x006a9dbd in pthread_cond_wait () from /lib/libc.so.6
#3  0x0390f3a5 in ?? () from /usr/lib/libQtWebKit.so.4
#4  0x0390f481 in ?? () from /usr/lib/libQtWebKit.so.4
#5  0x003a9cc9 in start_thread () from /lib/libpthread.so.0
#6  0x0069c6be in clone () from /lib/libc.so.6

Thread 5 (Thread 0xaceffb70 (LWP 2988)):
#0  0x0039f416 in __kernel_vsyscall ()
#1  0x003ae4dc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x006a9dbd in pthread_cond_wait () from /lib/libc.so.6
#3  0x06eb29c7 in wait (this=0x92b79f8, mutex=0x92b7ec0, time=4294967295) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x92b79f8, mutex=0x92b7ec0, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x00387030 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x92b79e0, th=0x9c47580) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x0038a7dc in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x9338b18, th=0x9c47580) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x0038655b in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x92b79e0, th=0x9c47580) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x0038a8d2 in ThreadWeaver::WorkingHardState::applyForWork (this=0x9338b18, th=0x9c47580) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x00387533 in ThreadWeaver::WeaverImpl::applyForWork (this=0x92b79e0, th=0x9c47580, previous=0x94376e8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x0038895e in ThreadWeaver::ThreadRunHelper::run (this=0xaceff2e4, parent=0x92b79e0, th=0x9c47580) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x0038907b in ThreadWeaver::Thread::run (this=0x9c47580) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x06eb1df9 in QThreadPrivate::start (arg=0x9c47580) at thread/qthread_unix.cpp:266
#13 0x003a9cc9 in start_thread () from /lib/libpthread.so.0
#14 0x0069c6be in clone () from /lib/libc.so.6

Thread 4 (Thread 0xac1d1b70 (LWP 2989)):
#0  0x0039f416 in __kernel_vsyscall ()
#1  0x003ae4dc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x006a9dbd in pthread_cond_wait () from /lib/libc.so.6
#3  0x06eb29c7 in wait (this=0x92b79f8, mutex=0x92b7ec0, time=4294967295) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x92b79f8, mutex=0x92b7ec0, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x00387030 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x92b79e0, th=0x9b789e8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x0038a7dc in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x9338b18, th=0x9b789e8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x0038655b in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x92b79e0, th=0x9b789e8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x0038a8d2 in ThreadWeaver::WorkingHardState::applyForWork (this=0x9338b18, th=0x9b789e8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x00387533 in ThreadWeaver::WeaverImpl::applyForWork (this=0x92b79e0, th=0x9b789e8, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x0038a8f1 in ThreadWeaver::WorkingHardState::applyForWork (this=0x9338b18, th=0x9b789e8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#11 0x00387533 in ThreadWeaver::WeaverImpl::applyForWork (this=0x92b79e0, th=0x9b789e8, previous=0x9e28768) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#12 0x0038895e in ThreadWeaver::ThreadRunHelper::run (this=0xac1d12e4, parent=0x92b79e0, th=0x9b789e8) at ../../../threadweaver/Weaver/Thread.cpp:87
#13 0x0038907b in ThreadWeaver::Thread::run (this=0x9b789e8) at ../../../threadweaver/Weaver/Thread.cpp:142
#14 0x06eb1df9 in QThreadPrivate::start (arg=0x9b789e8) at thread/qthread_unix.cpp:266
#15 0x003a9cc9 in start_thread () from /lib/libpthread.so.0
#16 0x0069c6be in clone () from /lib/libc.so.6

Thread 3 (Thread 0xad83fb70 (LWP 2990)):
#0  0x0039f416 in __kernel_vsyscall ()
#1  0x003ae4dc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x006a9dbd in pthread_cond_wait () from /lib/libc.so.6
#3  0x06eb29c7 in wait (this=0x92b79f8, mutex=0x92b7ec0, time=4294967295) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x92b79f8, mutex=0x92b7ec0, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x00387030 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x92b79e0, th=0x9c400c8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x0038a7dc in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x9338b18, th=0x9c400c8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x0038655b in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x92b79e0, th=0x9c400c8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x0038a8d2 in ThreadWeaver::WorkingHardState::applyForWork (this=0x9338b18, th=0x9c400c8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x00387533 in ThreadWeaver::WeaverImpl::applyForWork (this=0x92b79e0, th=0x9c400c8, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x0038a8f1 in ThreadWeaver::WorkingHardState::applyForWork (this=0x9338b18, th=0x9c400c8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#11 0x00387533 in ThreadWeaver::WeaverImpl::applyForWork (this=0x92b79e0, th=0x9c400c8, previous=0x92b7cd0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#12 0x0038895e in ThreadWeaver::ThreadRunHelper::run (this=0xad83f2e4, parent=0x92b79e0, th=0x9c400c8) at ../../../threadweaver/Weaver/Thread.cpp:87
#13 0x0038907b in ThreadWeaver::Thread::run (this=0x9c400c8) at ../../../threadweaver/Weaver/Thread.cpp:142
#14 0x06eb1df9 in QThreadPrivate::start (arg=0x9c400c8) at thread/qthread_unix.cpp:266
#15 0x003a9cc9 in start_thread () from /lib/libpthread.so.0
#16 0x0069c6be in clone () from /lib/libc.so.6

Thread 2 (Thread 0xa9c2fb70 (LWP 2991)):
#0  0x0039f416 in __kernel_vsyscall ()
#1  0x003ae4dc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x006a9dbd in pthread_cond_wait () from /lib/libc.so.6
#3  0x06eb29c7 in wait (this=0x92b79f8, mutex=0x92b7ec0, time=4294967295) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x92b79f8, mutex=0x92b7ec0, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x00387030 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x92b79e0, th=0x9d65ad0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x0038a7dc in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x9338b18, th=0x9d65ad0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x0038655b in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x92b79e0, th=0x9d65ad0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x0038a8d2 in ThreadWeaver::WorkingHardState::applyForWork (this=0x9338b18, th=0x9d65ad0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x00387533 in ThreadWeaver::WeaverImpl::applyForWork (this=0x92b79e0, th=0x9d65ad0, previous=0x95ddea8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x0038895e in ThreadWeaver::ThreadRunHelper::run (this=0xa9c2f2e4, parent=0x92b79e0, th=0x9d65ad0) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x0038907b in ThreadWeaver::Thread::run (this=0x9d65ad0) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x06eb1df9 in QThreadPrivate::start (arg=0x9d65ad0) at thread/qthread_unix.cpp:266
#13 0x003a9cc9 in start_thread () from /lib/libpthread.so.0
#14 0x0069c6be in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb788cad0 (LWP 1784)):
[KCrash Handler]
#7  operator== (this=0xbfa22cec) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#8  isNull (this=0xbfa22cec) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:547
#9  operator Plasma::AbstractRunner* QWeakPointer<Plasma::AbstractRunner>::* (this=0xbfa22cec) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:549
#10 Plasma::QueryMatch::isEnabled (this=0xbfa22cec) at ../../plasma/querymatch.cpp:185
#11 0x00a69d1f in Plasma::RunnerManager::run (this=0x926cf28, match=...) at ../../plasma/runnermanager.cpp:533
#12 0x00a69fb8 in Plasma::RunnerManager::run (this=0x926cf28, id=...) at ../../plasma/runnermanager.cpp:528
#13 0x0401fcd4 in KRunnerItemHandler::openUrl (url=...) at ../../../../../plasma/netbook/containments/sal/models/krunnermodel.cpp:80
#14 0x0400d4e0 in SearchLaunch::launch (this=0x92b2828, index=...) at ../../../../../plasma/netbook/containments/sal/sal.cpp:351
#15 0x0400d967 in SearchLaunch::qt_metacall (this=0x92b2828, _c=QMetaObject::InvokeMetaMethod, _id=108, _a=0xbfa22f08) at ./sal.moc:119
#16 0x06fb98ca in QMetaObject::metacall (object=0x92b2828, cl=QMetaObject::ReadProperty, idx=108, argv=0xbfa22f08) at kernel/qmetaobject.cpp:237
#17 0x06fcc6ad in QMetaObject::activate (sender=0x92b0050, m=0x402f220, local_signal_index=1, argv=0x8eaec50) at kernel/qobject.cpp:3280
#18 0x04015553 in ItemView::itemActivated (this=0x92b0050, _t1=...) at ./itemview.moc:119
#19 0x0401634d in ItemView::qt_metacall (this=0x92b0050, _c=QMetaObject::InvokeMetaMethod, _id=36, _a=0xbfa23048) at ./itemview.moc:93
#20 0x06fb98ca in QMetaObject::metacall (object=0x92b0050, cl=QMetaObject::ReadProperty, idx=36, argv=0xbfa23048) at kernel/qmetaobject.cpp:237
#21 0x06fcc6ad in QMetaObject::activate (sender=0x928ff28, m=0x402f080, local_signal_index=1, argv=0x8eaec50) at kernel/qobject.cpp:3280
#22 0x0400ee83 in ItemContainer::itemActivated (this=0x928ff28, _t1=...) at ./itemcontainer.moc:132
#23 0x04011cc7 in ItemContainer::itemClicked (this=0x928ff28) at ../../../../../plasma/netbook/containments/sal/itemcontainer.cpp:751
#24 0x040145d3 in ItemContainer::qt_metacall (this=0x928ff28, _c=QMetaObject::InvokeMetaMethod, _id=32, _a=0xbfa231ac) at ./itemcontainer.moc:111
#25 0x06fb98ca in QMetaObject::metacall (object=0x928ff28, cl=QMetaObject::ReadProperty, idx=32, argv=0xbfa231ac) at kernel/qmetaobject.cpp:237
#26 0x06fcc6ad in QMetaObject::activate (sender=0x92c6fb8, m=0xb96830, local_signal_index=1, argv=0x8eaec50) at kernel/qobject.cpp:3280
#27 0x00a9cc87 in Plasma::IconWidget::clicked (this=0x92c6fb8) at ./iconwidget.moc:206
#28 0x00a9f180 in Plasma::IconWidget::mouseReleaseEvent (this=0x92c6fb8, event=0xbfa23a4c) at ../../plasma/widgets/iconwidget.cpp:1399
#29 0x0401e0c4 in ResultWidget::mouseReleaseEvent (this=0x92c6fb8, event=0xbfa23a4c) at ../../../../../plasma/netbook/containments/sal/resultwidget.cpp:61
#30 0x01e481e4 in QGraphicsItem::sceneEvent (this=0x92c6fc0, event=0xbfa23a4c) at graphicsview/qgraphicsitem.cpp:6669
#31 0x01e9f4d7 in QGraphicsWidget::sceneEvent (this=0x92c6fb8, event=0xbfa23a4c) at graphicsview/qgraphicswidget.cpp:1173
#32 0x01e60569 in QGraphicsScenePrivate::sendEvent (this=0x8f624b8, item=0x92c6fc0, event=0xbfa23a4c) at graphicsview/qgraphicsscene.cpp:1211
#33 0x01e628b3 in QGraphicsScenePrivate::sendMouseEvent (this=0x8f624b8, mouseEvent=0xbfa23a4c) at graphicsview/qgraphicsscene.cpp:1285
#34 0x01e66c94 in QGraphicsScene::mouseReleaseEvent (this=0x8f620e8, mouseEvent=0xbfa23a4c) at graphicsview/qgraphicsscene.cpp:4111
#35 0x01e7b4fc in QGraphicsScene::event (this=0x8f620e8, event=0xbfa23a4c) at graphicsview/qgraphicsscene.cpp:3444
#36 0x01795fdc in QApplicationPrivate::notify_helper (this=0x8eaa988, receiver=0x8f620e8, e=0xbfa23a4c) at kernel/qapplication.cpp:4396
#37 0x0179c04e in QApplication::notify (this=0x8ea4300, receiver=0x8f620e8, e=0xbfa23a4c) at kernel/qapplication.cpp:3798
#38 0x0119a68a in KApplication::notify (this=0x8ea4300, receiver=0x8f620e8, event=0xbfa23a4c) at ../../kdeui/kernel/kapplication.cpp:310
#39 0x06fb3b3b in QCoreApplication::notifyInternal (this=0x8ea4300, receiver=0x8f620e8, event=0xbfa23a4c) at kernel/qcoreapplication.cpp:732
#40 0x01795b9e in sendSpontaneousEvent (receiver=0x8f620e8, event=0x4) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#41 qt_sendSpontaneousEvent (receiver=0x8f620e8, event=0x4) at kernel/qapplication.cpp:5388
#42 0x01e98965 in QGraphicsView::mouseReleaseEvent (this=0x8f50ad8, event=0xbfa241d0) at graphicsview/qgraphicsview.cpp:3334
#43 0x017f3e08 in QWidget::event (this=0x8f50ad8, event=0xbfa241d0) at kernel/qwidget.cpp:8187
#44 0x01c15763 in QFrame::event (this=0x8f50ad8, e=0xbfa241d0) at widgets/qframe.cpp:557
#45 0x01cb2a82 in QAbstractScrollArea::viewportEvent (this=0x1, e=0x4) at widgets/qabstractscrollarea.cpp:1043
#46 0x01e96ccb in QGraphicsView::viewportEvent (this=0x8f50ad8, event=0xbfa241d0) at graphicsview/qgraphicsview.cpp:2862
#47 0x01cb54d5 in viewportEvent (this=0x8f5b698, o=0x8f60cb8, e=0xbfa241d0) at widgets/qabstractscrollarea_p.h:100
#48 QAbstractScrollAreaFilter::eventFilter (this=0x8f5b698, o=0x8f60cb8, e=0xbfa241d0) at widgets/qabstractscrollarea_p.h:116
#49 0x06fb329a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x8eaa988, receiver=0x8f60cb8, event=0xbfa241d0) at kernel/qcoreapplication.cpp:847
#50 0x01795fb9 in QApplicationPrivate::notify_helper (this=0x8eaa988, receiver=0x8f60cb8, e=0xbfa241d0) at kernel/qapplication.cpp:4392
#51 0x0179cc2e in QApplication::notify (this=0x8ea4300, receiver=0x8f60cb8, e=0xbfa241d0) at kernel/qapplication.cpp:3959
#52 0x0119a68a in KApplication::notify (this=0x8ea4300, receiver=0x8f60cb8, event=0xbfa241d0) at ../../kdeui/kernel/kapplication.cpp:310
#53 0x06fb3b3b in QCoreApplication::notifyInternal (this=0x8ea4300, receiver=0x8f60cb8, event=0xbfa241d0) at kernel/qcoreapplication.cpp:732
#54 0x0179b094 in sendEvent (receiver=0x8f60cb8, event=0xbfa241d0, alienWidget=0x8f60cb8, nativeWidget=0x8f50ad8, buttonDown=0x21303c0, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#55 QApplicationPrivate::sendMouseEvent (receiver=0x8f60cb8, event=0xbfa241d0, alienWidget=0x8f60cb8, nativeWidget=0x8f50ad8, buttonDown=0x21303c0, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3058
#56 0x01829d10 in QETWidget::translateMouseEvent (this=0x8f50ad8, event=0xbfa246ec) at kernel/qapplication_x11.cpp:4403
#57 0x01829151 in QApplication::x11ProcessEvent (this=0x8ea4300, event=0xbfa246ec) at kernel/qapplication_x11.cpp:3414
#58 0x0185836a in x11EventSourceDispatch (s=0x8ead4f8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#59 0x06502855 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#60 0x06506668 in ?? () from /lib/libglib-2.0.so.0
#61 0x06506848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#62 0x06fe2565 in QEventDispatcherGlib::processEvents (this=0x8e88ce8, flags=...) at kernel/qeventdispatcher_glib.cpp:415
#63 0x01857be5 in QGuiEventDispatcherGlib::processEvents (this=0x8e88ce8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#64 0x06fb2609 in QEventLoop::processEvents (this=0xbfa249e4, flags=) at kernel/qeventloop.cpp:149
#65 0x06fb2a8a in QEventLoop::exec (this=0xbfa249e4, flags=...) at kernel/qeventloop.cpp:201
#66 0x06fb700f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#67 0x01794e07 in QApplication::exec () at kernel/qapplication.cpp:3672
#68 0x008ef96d in kdemain (argc=1, argv=0xbfa24c04) at ../../../../plasma/netbook/shell/main.cpp:67
#69 0x080485bb in main (argc=1, argv=0xbfa24c04) at plasma-netbook_dummy.cpp:3

Possible duplicates by query: bug 256461, bug 231500.

Reported using DrKonqi
Comment 1 Nicolas L. 2010-12-05 23:56:46 UTC 

*** This bug has been marked as a duplicate of bug 231500 ***
Comment 2 Dosap 2011-03-29 13:09:50 UTC 
Created attachment 58433 [details]
New crash information added by DrKonqi

plasma-desktop (0.3) on KDE Platform 4.5.1 (KDE 4.5.1) using Qt 4.7.0

- What I was doing when the application crashed: I was trying to access the System controler to kill kmix program, cause it's was using all the CPU. Just Amarok was turn on, nothing else. It's not the first time, but this bug didn't happen all the time.

-- Backtrace (Reduced):
#7  operator== (this=0xbfed0e6c) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#8  isNull (this=0xbfed0e6c) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:547
#9  operator Plasma::AbstractRunner* QWeakPointer<Plasma::AbstractRunner>::* (this=0xbfed0e6c) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:549
#10 Plasma::QueryMatch::isEnabled (this=0xbfed0e6c) at ../../plasma/querymatch.cpp:185
#11 0x0027ad1f in Plasma::RunnerManager::run (this=0x8f6f9d8, match=...) at ../../plasma/runnermanager.cpp:533