Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2) "release 5"
Qt Version: 4.7.4
Operating System: Linux 3.1.0-1.2-desktop x86_64
Distribution: "openSUSE 12.1 (x86_64)"

-- Information about the crash:
working with several open windows (libreoffice, scilab, yast). When I try to "poweroff" or "reboot" there is this bug message coming always.

The crash can be reproduced every time.

-- Backtrace:
Application: Shell de escritorio Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f668002a760 (LWP 1734))]

Thread 6 (Thread 0x7f665bb98700 (LWP 1737)):
#0  0x00007f667a497ac0 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f667a49892d in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f667a498f59 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f667ecb5576 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#4  0x00007f667ec89a22 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#5  0x00007f667ec89c1f in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#6  0x00007f667eba15df in QThread::exec() () from /usr/lib64/libQtCore.so.4
#7  0x00007f667ec6caef in ?? () from /usr/lib64/libQtCore.so.4
#8  0x00007f667eba4025 in ?? () from /usr/lib64/libQtCore.so.4
#9  0x00007f667e913f05 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f667d6ac53d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f6657e47700 (LWP 4370)):
#0  0x00007f667e917e6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f667eba44bb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007f66729ce104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1616990, th=0x159f5e0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#3  0x00007f66729d06ab in ThreadWeaver::WorkingHardState::applyForWork (this=0x15958c0, th=0x159f5e0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#4  0x00007f66729cf56f in ThreadWeaver::ThreadRunHelper::run (this=0x7f6657e46e40, parent=0x1616990, th=0x159f5e0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#5  0x00007f66729cf5fb in ThreadWeaver::Thread::run (this=0x159f5e0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#6  0x00007f667eba4025 in ?? () from /usr/lib64/libQtCore.so.4
#7  0x00007f667e913f05 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f667d6ac53d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f6658c74700 (LWP 4371)):
#0  0x00007f667e917e6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f667eba44bb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007f66729ce104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1616990, th=0x130f9e0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#3  0x00007f66729d06ab in ThreadWeaver::WorkingHardState::applyForWork (this=0x15958c0, th=0x130f9e0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#4  0x00007f66729cf56f in ThreadWeaver::ThreadRunHelper::run (this=0x7f6658c73e40, parent=0x1616990, th=0x130f9e0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#5  0x00007f66729cf5fb in ThreadWeaver::Thread::run (this=0x130f9e0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#6  0x00007f667eba4025 in ?? () from /usr/lib64/libQtCore.so.4
#7  0x00007f667e913f05 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f667d6ac53d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f6657646700 (LWP 4372)):
#0  0x00007f667e917e6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f667eba44bb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007f66729ce104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1616990, th=0x1cf60b0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#3  0x00007f66729d06ab in ThreadWeaver::WorkingHardState::applyForWork (this=0x15958c0, th=0x1cf60b0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#4  0x00007f66729cf56f in ThreadWeaver::ThreadRunHelper::run (this=0x7f6657645e40, parent=0x1616990, th=0x1cf60b0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#5  0x00007f66729cf5fb in ThreadWeaver::Thread::run (this=0x1cf60b0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#6  0x00007f667eba4025 in ?? () from /usr/lib64/libQtCore.so.4
#7  0x00007f667e913f05 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f667d6ac53d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f665552f700 (LWP 4373)):
#0  0x00007f667e917e6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f667eba44bb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007f66729ce104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1616990, th=0x8e9290) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#3  0x00007f66729d06ab in ThreadWeaver::WorkingHardState::applyForWork (this=0x15958c0, th=0x8e9290) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#4  0x00007f66729cf56f in ThreadWeaver::ThreadRunHelper::run (this=0x7f665552ee40, parent=0x1616990, th=0x8e9290) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#5  0x00007f66729cf5fb in ThreadWeaver::Thread::run (this=0x8e9290) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#6  0x00007f667eba4025 in ?? () from /usr/lib64/libQtCore.so.4
#7  0x00007f667e913f05 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f667d6ac53d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f668002a760 (LWP 1734)):
[KCrash Handler]
#6  0x00007f6662b70cc3 in TaskGroupItem::~TaskGroupItem (this=0x223fc40, __in_chrg=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#7  0x00007f6662b70d79 in TaskGroupItem::~TaskGroupItem (this=0x223fc40, __in_chrg=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/applets/tasks/taskgroupitem.cpp:83
#8  0x00007f667eca1178 in QObject::event(QEvent*) () from /usr/lib64/libQtCore.so.4
#9  0x00007f667e45627b in QGraphicsWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#10 0x00007f667de3cbe4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#11 0x00007f667de41a71 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#12 0x00007f667fa1ce36 in KApplication::notify (this=0x6e48f0, receiver=0x223fc40, event=0x224a340) at /usr/src/debug/kdelibs-4.7.2/kdeui/kernel/kapplication.cpp:311
#13 0x00007f667ec8a81c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#14 0x00007f667ec8dbf8 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQtCore.so.4
#15 0x00007f667ec8de1e in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#16 0x00007f666d481773 in kdemain (argc=1, argv=0x615b10) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/shell/main.cpp:120
#17 0x0000000000408897 in _start ()

This bug may be a duplicate of or related to bug 275286.

Possible duplicates by query: bug 303164, bug 302695, bug 301865, bug 300123, bug 299882.

Reported using DrKonqi