Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 2.6.37.6-0.9-desktop x86_64
Distribution: "openSUSE 11.4 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
Many times when I close a window(usually with Google Chrome), Plasma just crashes and the taskbar disappears. This also happens when I close a tab within Chrome.

No unusual desktoop behavior happens before hand, so I am surprised that this happens.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f2427864760 (LWP 2305))]

Thread 6 (Thread 0x7f2403eb9700 (LWP 2329)):
#0  0xffffffffff600177 in ?? ()
#1  0x00007fffeb15c7a1 in ?? ()
#2  0x00007f2421fd82b3 in clock_gettime () from /lib64/librt.so.1
#3  0x00007f242642ccf2 in do_gettime () at tools/qelapsedtimer_unix.cpp:123
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#5  0x00007f24264efffd in QTimerInfoList::updateCurrentTime (this=0x7f23fc0014d0) at kernel/qeventdispatcher_unix.cpp:339
#6  0x00007f24264f0375 in QTimerInfoList::timerWait (this=0x7f23fc0014d0, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#7  0x00007f24264eee3c in timerSourcePrepareHelper (src=<value optimized out>, timeout=0x7f2403eb8c4c) at kernel/qeventdispatcher_glib.cpp:136
#8  0x00007f24264eeee5 in timerSourcePrepare (source=<value optimized out>, timeout=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#9  0x00007f2421d27087 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#10 0x00007f2421d27fa9 in ?? () from /lib64/libglib-2.0.so.0
#11 0x00007f2421d28650 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#12 0x00007f24264ef636 in QEventDispatcherGlib::processEvents (this=0xecdc80, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#13 0x00007f24264c3c22 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#14 0x00007f24264c3e35 in QEventLoop::exec (this=0x7f2403eb8de0, flags=...) at kernel/qeventloop.cpp:201
#15 0x00007f24263d8be4 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:498
#16 0x00007f24264a5358 in QInotifyFileSystemWatcherEngine::run (this=0xecc230) at io/qfilesystemwatcher_inotify.cpp:248
#17 0x00007f24263db4d5 in QThreadPrivate::start (arg=0xecc230) at thread/qthread_unix.cpp:331
#18 0x00007f242614aa3f in start_thread () from /lib64/libpthread.so.0
#19 0x00007f2424efa71d in clone () from /lib64/libc.so.6
#20 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f23f977a700 (LWP 2567)):
#0  0x00007f242614f38c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f24263dbbbb in wait (this=<value optimized out>, mutex=0xefb630, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0xefb630, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f241a459f44 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0xfa2ac0, th=0x5c586c0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f241a45c643 in ThreadWeaver::WorkingHardState::applyForWork (this=0xefb210, th=0x5c586c0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f241a45b41f in ThreadWeaver::ThreadRunHelper::run (this=0x7f23f9779e30, parent=0xfa2ac0, th=0x5c586c0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f241a45b4a8 in ThreadWeaver::Thread::run (this=0x5c586c0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f24263db4d5 in QThreadPrivate::start (arg=0x5c586c0) at thread/qthread_unix.cpp:331
#8  0x00007f242614aa3f in start_thread () from /lib64/libpthread.so.0
#9  0x00007f2424efa71d in clone () from /lib64/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f23f8f79700 (LWP 2568)):
#0  0x00007f242614f38c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f24263dbbbb in wait (this=<value optimized out>, mutex=0xefb630, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0xefb630, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f241a459f44 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0xfa2ac0, th=0x7f23fc0047d0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f241a45c643 in ThreadWeaver::WorkingHardState::applyForWork (this=0xefb210, th=0x7f23fc0047d0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f241a45b41f in ThreadWeaver::ThreadRunHelper::run (this=0x7f23f8f78e30, parent=0xfa2ac0, th=0x7f23fc0047d0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f241a45b4a8 in ThreadWeaver::Thread::run (this=0x7f23fc0047d0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f24263db4d5 in QThreadPrivate::start (arg=0x7f23fc0047d0) at thread/qthread_unix.cpp:331
#8  0x00007f242614aa3f in start_thread () from /lib64/libpthread.so.0
#9  0x00007f2424efa71d in clone () from /lib64/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f23f8778700 (LWP 2569)):
#0  0x00007f242614f38c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f24263dbbbb in wait (this=<value optimized out>, mutex=0xefb630, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0xefb630, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f241a459f44 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0xfa2ac0, th=0x7f23fc001630) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f241a45c643 in ThreadWeaver::WorkingHardState::applyForWork (this=0xefb210, th=0x7f23fc001630) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f241a45b41f in ThreadWeaver::ThreadRunHelper::run (this=0x7f23f8777e30, parent=0xfa2ac0, th=0x7f23fc001630) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f241a45b4a8 in ThreadWeaver::Thread::run (this=0x7f23fc001630) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f24263db4d5 in QThreadPrivate::start (arg=0x7f23fc001630) at thread/qthread_unix.cpp:331
#8  0x00007f242614aa3f in start_thread () from /lib64/libpthread.so.0
#9  0x00007f2424efa71d in clone () from /lib64/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f23f7f77700 (LWP 2570)):
#0  0x00007f242614f38c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f24263dbbbb in wait (this=<value optimized out>, mutex=0xefb630, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0xefb630, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f241a459f44 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0xfa2ac0, th=0x5b7e4f0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f241a45c643 in ThreadWeaver::WorkingHardState::applyForWork (this=0xefb210, th=0x5b7e4f0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f241a45b41f in ThreadWeaver::ThreadRunHelper::run (this=0x7f23f7f76e30, parent=0xfa2ac0, th=0x5b7e4f0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f241a45b4a8 in ThreadWeaver::Thread::run (this=0x5b7e4f0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f24263db4d5 in QThreadPrivate::start (arg=0x5b7e4f0) at thread/qthread_unix.cpp:331
#8  0x00007f242614aa3f in start_thread () from /lib64/libpthread.so.0
#9  0x00007f2424efa71d in clone () from /lib64/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2427864760 (LWP 2305)):
[KCrash Handler]
#6  0x00007f240d17fb66 in data (this=0x5e80870) at /usr/include/QtCore/qsharedpointer_impl.h:575
#7  TaskManager::TaskItem::task (this=0x5e80870) at /usr/src/debug/kde-workspace-4.7.2/libs/taskmanager/taskitem.cpp:113
#8  0x00007f240cf26179 in WindowTaskItem::publishIconGeometry (this=0x63a7460) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#9  0x00007f240cf332dc in AbstractTaskItem::timerEvent (this=0x63a7460, event=<value optimized out>) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#10 0x00007f24264d84d9 in QObject::event (this=0x63a7460, e=<value optimized out>) at kernel/qobject.cpp:1190
#11 0x00007f2425c89bcb in QGraphicsWidget::event (this=0x63a7460, event=0x7fffeb0eb000) at graphicsview/qgraphicswidget.cpp:1455
#12 0x00007f242566a2c4 in QApplicationPrivate::notify_helper (this=0x6c8bb0, receiver=0x63a7460, e=0x7fffeb0eb000) at kernel/qapplication.cpp:4481
#13 0x00007f242567287a in QApplication::notify (this=<value optimized out>, receiver=0x63a7460, e=0x7fffeb0eb000) at kernel/qapplication.cpp:4360
#14 0x00007f242724fae6 in KApplication::notify (this=0x6b8b70, receiver=0x63a7460, event=0x7fffeb0eb000) at /usr/src/debug/kdelibs-4.7.2/kdeui/kernel/kapplication.cpp:311
#15 0x00007f24264c47cc in QCoreApplication::notifyInternal (this=0x6b8b70, receiver=0x63a7460, event=0x7fffeb0eb000) at kernel/qcoreapplication.cpp:787
#16 0x00007f24264f2198 in sendEvent (this=0x6c6f30) at kernel/qcoreapplication.h:215
#17 QTimerInfoList::activateTimers (this=0x6c6f30) at kernel/qeventdispatcher_unix.cpp:618
#18 0x00007f24264eef28 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#19 idleTimerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#20 0x00007f2421d27bd3 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#21 0x00007f2421d283b0 in ?? () from /lib64/libglib-2.0.so.0
#22 0x00007f2421d28650 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#23 0x00007f24264ef5df in QEventDispatcherGlib::processEvents (this=0x6bf280, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#24 0x00007f242571041e in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#25 0x00007f24264c3c22 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#26 0x00007f24264c3e35 in QEventLoop::exec (this=0x7fffeb0eb310, flags=...) at kernel/qeventloop.cpp:201
#27 0x00007f24264c827b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#28 0x00007f24155fb25d in kdemain (argc=1, argv=0x615280) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/shell/main.cpp:120
#29 0x0000000000407279 in _start ()

Possible duplicates by query: bug 290152, bug 290101, bug 289482, bug 289073, bug 289064.

Reported using DrKonqi