Bug 292070

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3) (Compiled from sources)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-14-generic i686
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
Logining into system when I entered my user name and then by mistake just hit enter it allows me into the system without entering my password.
- Unusual behavior I noticed:
Allowed to enter system without entering password.

- Custom settings of the application:
FBI Theme from market.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb777cb20 (LWP 1706))]

Thread 8 (Thread 0xb17b6b70 (LWP 1723)):
#0  0x017cfd10 in __GI_clock_gettime (clock_id=1, tp=0xb17b6018) at ../sysdeps/unix/clock_gettime.c:116
#1  0x03e3f7d5 in do_gettime (frac=0xb17b6010, sec=0xb17b6008) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x03f124b6 in QTimerInfoList::updateCurrentTime (this=0xa785b7c) at kernel/qeventdispatcher_unix.cpp:339
#4  0x03f1280a in QTimerInfoList::timerWait (this=0xa785b7c, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x03f11053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xb17b611c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x03f110ed in timerSourcePrepare (source=0xa785b48, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x01b5588c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0x01b56637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0x01b56c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0x03f11b37 in QEventDispatcherGlib::processEvents (this=0xa784ed8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x03ee21dd in QEventLoop::processEvents (this=0xb17b62a0, flags=...) at kernel/qeventloop.cpp:149
#12 0x03ee2421 in QEventLoop::exec (this=0xb17b62a0, flags=...) at kernel/qeventloop.cpp:201
#13 0x03de590b in QThread::exec (this=0xa7820e0) at thread/qthread.cpp:498
#14 0x03ec2e2d in QInotifyFileSystemWatcherEngine::run (this=0xa7820e0) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x03de87b3 in QThreadPrivate::start (arg=0xa7820e0) at thread/qthread_unix.cpp:331
#16 0x018c4d31 in start_thread (arg=0xb17b6b70) at pthread_create.c:304
#17 0x0091b0ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 7 (Thread 0xaf690b70 (LWP 1726)):
#0  0x01b56877 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0x01b56c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0x03f11b37 in QEventDispatcherGlib::processEvents (this=0xab8bbe0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#3  0x03ee21dd in QEventLoop::processEvents (this=0xaf6902a0, flags=...) at kernel/qeventloop.cpp:149
#4  0x03ee2421 in QEventLoop::exec (this=0xaf6902a0, flags=...) at kernel/qeventloop.cpp:201
#5  0x03de590b in QThread::exec (this=0xab8a368) at thread/qthread.cpp:498
#6  0x03ec2e2d in QInotifyFileSystemWatcherEngine::run (this=0xab8a368) at io/qfilesystemwatcher_inotify.cpp:248
#7  0x03de87b3 in QThreadPrivate::start (arg=0xab8a368) at thread/qthread_unix.cpp:331
#8  0x018c4d31 in start_thread (arg=0xaf690b70) at pthread_create.c:304
#9  0x0091b0ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 6 (Thread 0xade8db70 (LWP 1735)):
#0  0x018c7d44 in __pthread_mutex_unlock_usercnt (mutex=0xad27e54, decr=1) at pthread_mutex_unlock.c:52
#1  0x00928f54 in pthread_mutex_unlock (mutex=0xad27e54) at forward.c:184
#2  0x01b54f16 in g_main_context_acquire () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x01b5656d in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x01b56f9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x06848cea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0x01b7d5f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0x018c4d31 in start_thread (arg=0xade8db70) at pthread_create.c:304
#8  0x0091b0ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 5 (Thread 0xace8bb70 (LWP 2169)):
#0  0x00de6416 in __kernel_vsyscall ()
#1  0x018c8a5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x00928cfc in __pthread_cond_wait (cond=0xa7f50e0, mutex=0xa7f50c8) at forward.c:139
#3  0x03de8cc0 in wait (time=4294967295, this=0xa7f50c8) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0xa8026a0, mutex=0xa7de208, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x006f3406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0xa802688, th=0xb0b53d0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x006f5ecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0xa7dd0d8, th=0xb0b53d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x006f303a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0xa802688, th=0xb0b53d0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x006f5fcc in ThreadWeaver::WorkingHardState::applyForWork (this=0xa7dd0d8, th=0xb0b53d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x006f2f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0xa802688, th=0xb0b53d0, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x006f5fe8 in ThreadWeaver::WorkingHardState::applyForWork (this=0xa7dd0d8, th=0xb0b53d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#11 0x006f2f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0xa802688, th=0xb0b53d0, previous=0xb2deef0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#12 0x006f4b14 in ThreadWeaver::ThreadRunHelper::run (this=0xace8b304, parent=0xa802688, th=0xb0b53d0) at ../../../threadweaver/Weaver/Thread.cpp:87
#13 0x006f4bca in ThreadWeaver::Thread::run (this=0xb0b53d0) at ../../../threadweaver/Weaver/Thread.cpp:142
#14 0x03de87b3 in QThreadPrivate::start (arg=0xb0b53d0) at thread/qthread_unix.cpp:331
#15 0x018c4d31 in start_thread (arg=0xace8bb70) at pthread_create.c:304
#16 0x0091b0ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 4 (Thread 0xad68cb70 (LWP 2170)):
#0  0x00de6416 in __kernel_vsyscall ()
#1  0x018c8a5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x00928cfc in __pthread_cond_wait (cond=0xa7f50e0, mutex=0xa7f50c8) at forward.c:139
#3  0x03de8cc0 in wait (time=4294967295, this=0xa7f50c8) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0xa8026a0, mutex=0xa7de208, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x006f3406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0xa802688, th=0xb53e490) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x006f5ecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0xa7dd0d8, th=0xb53e490) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x006f303a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0xa802688, th=0xb53e490) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x006f5fcc in ThreadWeaver::WorkingHardState::applyForWork (this=0xa7dd0d8, th=0xb53e490) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x006f2f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0xa802688, th=0xb53e490, previous=0xb1ad348) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x006f4b14 in ThreadWeaver::ThreadRunHelper::run (this=0xad68c304, parent=0xa802688, th=0xb53e490) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x006f4bca in ThreadWeaver::Thread::run (this=0xb53e490) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x03de87b3 in QThreadPrivate::start (arg=0xb53e490) at thread/qthread_unix.cpp:331
#13 0x018c4d31 in start_thread (arg=0xad68cb70) at pthread_create.c:304
#14 0x0091b0ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xaee8fb70 (LWP 2171)):
#0  0x00de6416 in __kernel_vsyscall ()
#1  0x018c8a5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x00928cfc in __pthread_cond_wait (cond=0xa7f50e0, mutex=0xa7f50c8) at forward.c:139
#3  0x03de8cc0 in wait (time=4294967295, this=0xa7f50c8) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0xa8026a0, mutex=0xa7de208, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x006f3406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0xa802688, th=0xb543d50) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x006f5ecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0xa7dd0d8, th=0xb543d50) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x006f303a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0xa802688, th=0xb543d50) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x006f5fcc in ThreadWeaver::WorkingHardState::applyForWork (this=0xa7dd0d8, th=0xb543d50) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x006f2f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0xa802688, th=0xb543d50, previous=0xa1f5888) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x006f4b14 in ThreadWeaver::ThreadRunHelper::run (this=0xaee8f304, parent=0xa802688, th=0xb543d50) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x006f4bca in ThreadWeaver::Thread::run (this=0xb543d50) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x03de87b3 in QThreadPrivate::start (arg=0xb543d50) at thread/qthread_unix.cpp:331
#13 0x018c4d31 in start_thread (arg=0xaee8fb70) at pthread_create.c:304
#14 0x0091b0ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xae68eb70 (LWP 2172)):
#0  0x00de6416 in __kernel_vsyscall ()
#1  0x018c8a5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x00928cfc in __pthread_cond_wait (cond=0xa7f50e0, mutex=0xa7f50c8) at forward.c:139
#3  0x03de8cc0 in wait (time=4294967295, this=0xa7f50c8) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0xa8026a0, mutex=0xa7de208, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x006f3406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0xa802688, th=0xa759650) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x006f5ecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0xa7dd0d8, th=0xa759650) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x006f303a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0xa802688, th=0xa759650) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x006f5fcc in ThreadWeaver::WorkingHardState::applyForWork (this=0xa7dd0d8, th=0xa759650) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x006f2f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0xa802688, th=0xa759650, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x006f5fe8 in ThreadWeaver::WorkingHardState::applyForWork (this=0xa7dd0d8, th=0xa759650) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#11 0x006f2f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0xa802688, th=0xa759650, previous=0xae83218) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#12 0x006f4b14 in ThreadWeaver::ThreadRunHelper::run (this=0xae68e304, parent=0xa802688, th=0xa759650) at ../../../threadweaver/Weaver/Thread.cpp:87
#13 0x006f4bca in ThreadWeaver::Thread::run (this=0xa759650) at ../../../threadweaver/Weaver/Thread.cpp:142
#14 0x03de87b3 in QThreadPrivate::start (arg=0xa759650) at thread/qthread_unix.cpp:331
#15 0x018c4d31 in start_thread (arg=0xae68eb70) at pthread_create.c:304
#16 0x0091b0ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb777cb20 (LWP 1706)):
[KCrash Handler]
#7  operator== (value=0, this=0x1b) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#8  isNull (this=0xb0ea6120) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#9  operator QWeakPointer<Plasma::AbstractRunner>::RestrictedBool (this=0xb0ea6120) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:570
#10 Plasma::QueryMatch::isEnabled (this=0xbf807fbc) at ../../plasma/querymatch.cpp:220
#11 0x003a329e in Plasma::RunnerManager::run (this=0xa52ba98, match=...) at ../../plasma/runnermanager.cpp:570
#12 0x003a355b in Plasma::RunnerManager::run (this=0xa52ba98, id=...) at ../../plasma/runnermanager.cpp:565
#13 0x094a9d03 in KRunnerItemHandler::openUrl (url=...) at ../../../../../plasma/netbook/containments/sal/models/krunnermodel.cpp:78
#14 0x09498d58 in SearchLaunch::launch (this=0xa64cce8, index=...) at ../../../../../plasma/netbook/containments/sal/sal.cpp:352
#15 0x0949c9fa in SearchLaunch::qt_metacall (this=0xa64cce8, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbf8081b8) at ./sal.moc:121
#16 0x03ee9b7d in metacall (argv=0xbf8081b8, idx=111, cl=QMetaObject::InvokeMetaMethod, object=0xa64cce8) at kernel/qmetaobject.cpp:237
#17 QMetaObject::metacall (object=0xa64cce8, cl=QMetaObject::InvokeMetaMethod, idx=111, argv=0xbf8081b8) at kernel/qmetaobject.cpp:232
#18 0x03ef8a6a in QMetaObject::activate (sender=0xa52caa0, m=0x94bb528, local_signal_index=1, argv=0xbf8081b8) at kernel/qobject.cpp:3278
#19 0x094a3f35 in ItemView::itemActivated (this=0xa52caa0, _t1=...) at ./itemview.moc:119
#20 0x094a451b in ItemView::qt_metacall (this=0xa52caa0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbf8082e8) at ./itemview.moc:93
#21 0x03ee9b7d in metacall (argv=0xbf8082e8, idx=37, cl=QMetaObject::InvokeMetaMethod, object=0xa52caa0) at kernel/qmetaobject.cpp:237
#22 QMetaObject::metacall (object=0xa52caa0, cl=QMetaObject::InvokeMetaMethod, idx=37, argv=0xbf8082e8) at kernel/qmetaobject.cpp:232
#23 0x03ef8a6a in QMetaObject::activate (sender=0xa656cc0, m=0x94bb374, local_signal_index=1, argv=0xbf8082e8) at kernel/qobject.cpp:3278
#24 0x0949e025 in ItemContainer::itemActivated (this=0xa656cc0, _t1=...) at ./itemcontainer.moc:132
#25 0x0949e0f7 in ItemContainer::itemClicked (this=0xa656cc0) at ../../../../../plasma/netbook/containments/sal/itemcontainer.cpp:694
#26 0x094a2134 in ItemContainer::qt_metacall (this=0xa656cc0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbf808434) at ./itemcontainer.moc:111
#27 0x03ee9b7d in metacall (argv=0xbf808434, idx=33, cl=QMetaObject::InvokeMetaMethod, object=0xa656cc0) at kernel/qmetaobject.cpp:237
#28 QMetaObject::metacall (object=0xa656cc0, cl=QMetaObject::InvokeMetaMethod, idx=33, argv=0xbf808434) at kernel/qmetaobject.cpp:232
#29 0x03ef8a6a in QMetaObject::activate (sender=0xa7f2af0, m=0x51b8e8, local_signal_index=1, argv=0x0) at kernel/qobject.cpp:3278
#30 0x003e09d5 in Plasma::IconWidget::clicked (this=0xa7f2af0) at ./iconwidget.moc:209
#31 0x003e1c48 in mouseReleaseEvent (event=0xbf808b28, this=0xa7f2af0) at ../../plasma/widgets/iconwidget.cpp:1426
#32 Plasma::IconWidget::mouseReleaseEvent (this=0xa7f2af0, event=0xbf808b28) at ../../plasma/widgets/iconwidget.cpp:1404
#33 0x094a7cd3 in ResultWidget::mouseReleaseEvent (this=0xa7f2af0, event=0xbf808b28) at ../../../../../plasma/netbook/containments/sal/resultwidget.cpp:76
#34 0x04b3280f in QGraphicsItem::sceneEvent (this=0xa7f2af8, event=0xbf808b28) at graphicsview/qgraphicsitem.cpp:6730
#35 0x04b8f806 in QGraphicsWidget::sceneEvent (this=0xa7f2af0, event=0xbf808b28) at graphicsview/qgraphicswidget.cpp:1223
#36 0x04b5bc7e in sendEvent (event=0xbf808b28, item=0xa7f2af8, this=<optimized out>) at graphicsview/qgraphicsscene.cpp:1217
#37 QGraphicsScenePrivate::sendEvent (this=0xa1313e8, item=0xa7f2af8, event=0xbf808b28) at graphicsview/qgraphicsscene.cpp:1193
#38 0x04b5c8ab in QGraphicsScenePrivate::sendMouseEvent (this=0xa1313e8, mouseEvent=0xbf808b28) at graphicsview/qgraphicsscene.cpp:1291
#39 0x04b5d2c7 in QGraphicsScene::mouseReleaseEvent (this=0xa1ca5e8, mouseEvent=0xbf808b28) at graphicsview/qgraphicsscene.cpp:4121
#40 0x04b6baec in QGraphicsScene::event (this=0xa1ca5e8, event=0xbf808b28) at graphicsview/qgraphicsscene.cpp:3453
#41 0x044d0d54 in notify_helper (e=0xbf808b28, receiver=0xa1ca5e8, this=0xa051cb8) at kernel/qapplication.cpp:4486
#42 QApplicationPrivate::notify_helper (this=0xa051cb8, receiver=0xa1ca5e8, e=0xbf808b28) at kernel/qapplication.cpp:4458
#43 0x044d6103 in QApplication::notify (this=0xbf808b28, receiver=0xa1ca5e8, e=0xbf808b28) at kernel/qapplication.cpp:3886
#44 0x00fce681 in KApplication::notify (this=0xa03c678, receiver=0xa1ca5e8, event=0xbf808b28) at ../../kdeui/kernel/kapplication.cpp:311
#45 0x03ee319e in QCoreApplication::notifyInternal (this=0xa03c678, receiver=0xa1ca5e8, event=0xbf808b28) at kernel/qcoreapplication.cpp:787
#46 0x044ceb6d in sendSpontaneousEvent (event=0xbf808b28, receiver=0xa1ca5e8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#47 qt_sendSpontaneousEvent (receiver=0xa1ca5e8, event=0xbf808b28) at kernel/qapplication.cpp:5480
#48 0x04b8a978 in QGraphicsView::mouseReleaseEvent (this=0xa50b900, event=0xbf80911c) at graphicsview/qgraphicsview.cpp:3336
#49 0x0452af98 in QWidget::event (this=0xa50b900, event=0xbf80911c) at kernel/qwidget.cpp:8295
#50 0x04930235 in QFrame::event (this=0xa50b900, e=0xbf80911c) at widgets/qframe.cpp:557
#51 0x049c27d1 in QAbstractScrollArea::viewportEvent (this=0xa50b900, e=0xbf80911c) at widgets/qabstractscrollarea.cpp:1043
#52 0x04b8dcb4 in QGraphicsView::viewportEvent (this=0xa50b900, event=0xbf80911c) at graphicsview/qgraphicsview.cpp:2864
#53 0x049c4ee6 in viewportEvent (this=<optimized out>, event=0xbf80911c) at widgets/qabstractscrollarea_p.h:100
#54 eventFilter (e=0xbf80911c, this=<optimized out>, o=<optimized out>) at widgets/qabstractscrollarea_p.h:116
#55 QAbstractScrollAreaFilter::eventFilter (this=0xad4ff88, o=0xa8f0778, e=0xbf80911c) at widgets/qabstractscrollarea_p.h:115
#56 0x03ee3336 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0xa051cb8, receiver=0xa8f0778, event=0xbf80911c) at kernel/qcoreapplication.cpp:902
#57 0x044d0d22 in notify_helper (e=0xbf80911c, receiver=0xa8f0778, this=0xa051cb8) at kernel/qapplication.cpp:4482
#58 QApplicationPrivate::notify_helper (this=0xa051cb8, receiver=0xa8f0778, e=0xbf80911c) at kernel/qapplication.cpp:4458
#59 0x044d6dbb in QApplication::notify (this=0xa051cb8, receiver=0xa8f0778, e=0xbf80911c) at kernel/qapplication.cpp:4047
#60 0x00fce681 in KApplication::notify (this=0xa03c678, receiver=0xa8f0778, event=0xbf80911c) at ../../kdeui/kernel/kapplication.cpp:311
#61 0x03ee319e in QCoreApplication::notifyInternal (this=0xa03c678, receiver=0xa8f0778, event=0xbf80911c) at kernel/qcoreapplication.cpp:787
#62 0x044d1d15 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#63 QApplicationPrivate::sendMouseEvent (receiver=0xa8f0778, event=0xbf80911c, alienWidget=0xa8f0778, nativeWidget=0xa50b900, buttonDown=0x4e3beb4, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3146
#64 0x0455e2c4 in QETWidget::translateMouseEvent (this=0xa50b900, event=0xbf80959c) at kernel/qapplication_x11.cpp:4568
#65 0x0455ce4d in QApplication::x11ProcessEvent (this=0xa03c678, event=0xbf80959c) at kernel/qapplication_x11.cpp:3690
#66 0x0458924c in x11EventSourceDispatch (s=0xa058f00, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#67 0x01b5625f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#68 0x01b56990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#69 0x01b56c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#70 0x03f11ada in QEventDispatcherGlib::processEvents (this=0xa008218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#71 0x04588e3a in QGuiEventDispatcherGlib::processEvents (this=0xa008218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#72 0x03ee21dd in QEventLoop::processEvents (this=0xbf8098a4, flags=...) at kernel/qeventloop.cpp:149
#73 0x03ee2421 in QEventLoop::exec (this=0xbf8098a4, flags=...) at kernel/qeventloop.cpp:201
#74 0x03ee719d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#75 0x044ce8f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#76 0x0056a18b in kdemain (argc=1, argv=0xbf809aa4) at ../../../../plasma/desktop/shell/main.cpp:120
#77 0x0804850b in main (argc=1, argv=0xbf809aa4) at plasma-desktop_dummy.cpp:3

Reported using DrKonqi