Bug 293350

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2) "release 5" (Compiled from sources)
Qt Version: 4.7.4
Operating System: Linux 3.1.9-1.4-desktop x86_64
Distribution: "openSUSE 12.1 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
Everytime I shut down from KDE the system crashes.

Only happens during shut down, never during logout.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f68a3d3f760 (LWP 5624))]

Thread 6 (Thread 0x7f688509d700 (LWP 5625)):
#0  0x00007f68a13ab523 in poll () from /lib64/libc.so.6
#1  0x00007f689e1a0a98 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f689e1a0f59 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f68a29bd586 in QEventDispatcherGlib::processEvents (this=0x7f68800008c0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f68a2991a32 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f68a2991c2f in QEventLoop::exec (this=0x7f688509cdf0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f68a28a95df in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f68a2974aff in QInotifyFileSystemWatcherEngine::run (this=0xc404e0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f68a28ac025 in QThreadPrivate::start (arg=0xc404e0) at thread/qthread_unix.cpp:331
#9  0x00007f68a261bf05 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f68a13b463d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f687d177700 (LWP 10529)):
#0  0x00007f68a261fe6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f68a28ac4bb in wait (time=18446744073709551615, this=0xc7ebb0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0xc69740, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f68966d6104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0xcc46f0, th=0x137a840) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f68966d86ab in ThreadWeaver::WorkingHardState::applyForWork (this=0xc40e00, th=0x137a840) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f68966d756f in ThreadWeaver::ThreadRunHelper::run (this=0x7f687d176e40, parent=0xcc46f0, th=0x137a840) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f68966d75fb in ThreadWeaver::Thread::run (this=0x137a840) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f68a28ac025 in QThreadPrivate::start (arg=0x137a840) at thread/qthread_unix.cpp:331
#8  0x00007f68a261bf05 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f68a13b463d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f687d978700 (LWP 10530)):
#0  0x00007f68a261fe6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f68a28ac4bb in wait (time=18446744073709551615, this=0xc7ebb0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0xc69740, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f68966d6104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0xcc46f0, th=0x71dde0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f68966d86ab in ThreadWeaver::WorkingHardState::applyForWork (this=0xc40e00, th=0x71dde0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f68966d756f in ThreadWeaver::ThreadRunHelper::run (this=0x7f687d977e40, parent=0xcc46f0, th=0x71dde0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f68966d75fb in ThreadWeaver::Thread::run (this=0x71dde0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f68a28ac025 in QThreadPrivate::start (arg=0x71dde0) at thread/qthread_unix.cpp:331
#8  0x00007f68a261bf05 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f68a13b463d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f686e67a700 (LWP 10531)):
#0  0x00007f68a261fe6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f68a28ac4bb in wait (time=18446744073709551615, this=0xc7ebb0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0xc69740, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f68966d6104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0xcc46f0, th=0x1a21ef0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f68966d86ab in ThreadWeaver::WorkingHardState::applyForWork (this=0xc40e00, th=0x1a21ef0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f68966d756f in ThreadWeaver::ThreadRunHelper::run (this=0x7f686e679e40, parent=0xcc46f0, th=0x1a21ef0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f68966d75fb in ThreadWeaver::Thread::run (this=0x1a21ef0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f68a28ac025 in QThreadPrivate::start (arg=0x1a21ef0) at thread/qthread_unix.cpp:331
#8  0x00007f68a261bf05 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f68a13b463d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f685f9ec700 (LWP 10532)):
#0  0x00007f68a261fe6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f68a28ac4bb in wait (time=18446744073709551615, this=0xc7ebb0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0xc69740, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f68966d6104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0xcc46f0, th=0x1c0fb20) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f68966d86ab in ThreadWeaver::WorkingHardState::applyForWork (this=0xc40e00, th=0x1c0fb20) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f68966d756f in ThreadWeaver::ThreadRunHelper::run (this=0x7f685f9ebe40, parent=0xcc46f0, th=0x1c0fb20) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f68966d75fb in ThreadWeaver::Thread::run (this=0x1c0fb20) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f68a28ac025 in QThreadPrivate::start (arg=0x1c0fb20) at thread/qthread_unix.cpp:331
#8  0x00007f68a261bf05 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f68a13b463d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f68a3d3f760 (LWP 5624)):
[KCrash Handler]
#6  0x0000000002057d4a in ?? ()
#7  0x00007f687ea93cc6 in TaskGroupItem::~TaskGroupItem (this=0x1a09690, __in_chrg=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#8  0x00007f687ea93d79 in TaskGroupItem::~TaskGroupItem (this=0x1a09690, __in_chrg=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/applets/tasks/taskgroupitem.cpp:83
#9  0x00007f68a29a9188 in QObject::event (this=0x1a09690, e=<optimized out>) at kernel/qobject.cpp:1209
#10 0x00007f68a215e31b in QGraphicsWidget::event (this=0x1a09690, event=0x1d8f320) at graphicsview/qgraphicswidget.cpp:1455
#11 0x00007f68a1b44c34 in notify_helper (e=0x1d8f320, receiver=0x1a09690, this=0x6dcbb0) at kernel/qapplication.cpp:4481
#12 QApplicationPrivate::notify_helper (this=0x6dcbb0, receiver=0x1a09690, e=0x1d8f320) at kernel/qapplication.cpp:4453
#13 0x00007f68a1b49ac1 in QApplication::notify (this=0x6cfc60, receiver=0x1a09690, e=0x1d8f320) at kernel/qapplication.cpp:4360
#14 0x00007f68a3724e36 in KApplication::notify (this=0x6cfc60, receiver=0x1a09690, event=0x1d8f320) at /usr/src/debug/kdelibs-4.7.2/kdeui/kernel/kapplication.cpp:311
#15 0x00007f68a299282c in QCoreApplication::notifyInternal (this=0x6cfc60, receiver=0x1a09690, event=0x1d8f320) at kernel/qcoreapplication.cpp:787
#16 0x00007f68a2995c08 in sendEvent (event=0x1d8f320, receiver=0x1a09690) at kernel/qcoreapplication.h:215
#17 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0x615800) at kernel/qcoreapplication.cpp:1428
#18 0x00007f68a2995e2e in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1071
#19 0x00007f68914eb773 in kdemain (argc=1, argv=0x615430) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/shell/main.cpp:120
#20 0x0000000000408897 in _start ()

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

Possible duplicates by query: bug 292722, bug 292424, bug 291807, bug 291784, bug 291661.

Reported using DrKonqi