Bug 288129

Version:           unspecified (using KDE 4.7.2) 
OS:                Linux

Plasma crashes on log off 

Reproducible: Didn't try

Steps to Reproduce:
Log out from KDE

Actual Results:  
Black Screen with window :Application: Plasma Desktop Shell (kdeinit4), signal: Segmentation fault


Expected Results:  
Go to KDM login screen

Application: Plasma Desktop Shell (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f492787a760 (LWP 2840))]

Thread 10 (Thread 0x7f4902f3d700 (LWP 2888)):
#0  0x00007f492616611f in __pthread_mutex_unlock_usercnt (mutex=0x7f48fc0009d8, decr=0) at pthread_mutex_unlock.c:52
#1  0x00007f4921ce7a8c in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f4921ce7f59 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f4926504576 in QEventDispatcherGlib::processEvents (this=0x7f48fc0008e0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f49264d8a22 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f49264d8c1f in QEventLoop::exec (this=0x7f4902f3cd30, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f49263f05df in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f49264bbaef in QInotifyFileSystemWatcherEngine::run (this=0x117b7c0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f49263f3025 in QThreadPrivate::start (arg=0x117b7c0) at thread/qthread_unix.cpp:331
#9  0x00007f49175212da in ?? () from /usr/X11R6/lib64/libGL.so.1
#10 0x00007f4926162f05 in start_thread (arg=0x7f4902f3d700) at pthread_create.c:301
#11 0x00007f4924efb53d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 9 (Thread 0x7f48f3fff700 (LWP 9634)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f49263f34bb in wait (time=18446744073709551615, this=0x11bb540) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x120fd50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f491a21d104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x12688d0, th=0x289c440) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f491a21f6ab in ThreadWeaver::WorkingHardState::applyForWork (this=0x11a4b60, th=0x289c440) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f491a21f6c4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x11a4b60, th=0x289c440) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f491a21e56f in ThreadWeaver::ThreadRunHelper::run (this=0x7f48f3ffed80, parent=0x12688d0, th=0x289c440) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#7  0x00007f491a21e5fb in ThreadWeaver::Thread::run (this=0x289c440) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#8  0x00007f49263f3025 in QThreadPrivate::start (arg=0x289c440) at thread/qthread_unix.cpp:331
#9  0x00007f49175212da in ?? () from /usr/X11R6/lib64/libGL.so.1
#10 0x00007f4926162f05 in start_thread (arg=0x7f48f3fff700) at pthread_create.c:301
#11 0x00007f4924efb53d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 8 (Thread 0x7f4901a66700 (LWP 9635)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f49263f34bb in wait (time=18446744073709551615, this=0x11bb540) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x120fd50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f491a21d104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x12688d0, th=0x2897c50) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f491a21f6ab in ThreadWeaver::WorkingHardState::applyForWork (this=0x11a4b60, th=0x2897c50) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f491a21e56f in ThreadWeaver::ThreadRunHelper::run (this=0x7f4901a65d80, parent=0x12688d0, th=0x2897c50) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f491a21e5fb in ThreadWeaver::Thread::run (this=0x2897c50) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f49263f3025 in QThreadPrivate::start (arg=0x2897c50) at thread/qthread_unix.cpp:331
#8  0x00007f49175212da in ?? () from /usr/X11R6/lib64/libGL.so.1
#9  0x00007f4926162f05 in start_thread (arg=0x7f4901a66700) at pthread_create.c:301
#10 0x00007f4924efb53d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 7 (Thread 0x7f48e11ba700 (LWP 9636)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f49263f34bb in wait (time=18446744073709551615, this=0x11bb540) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x120fd50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f491a21d104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x12688d0, th=0x28969a0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f491a21f6ab in ThreadWeaver::WorkingHardState::applyForWork (this=0x11a4b60, th=0x28969a0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f491a21e56f in ThreadWeaver::ThreadRunHelper::run (this=0x7f48e11b9d80, parent=0x12688d0, th=0x28969a0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f491a21e5fb in ThreadWeaver::Thread::run (this=0x28969a0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f49263f3025 in QThreadPrivate::start (arg=0x28969a0) at thread/qthread_unix.cpp:331
#8  0x00007f49175212da in ?? () from /usr/X11R6/lib64/libGL.so.1
#9  0x00007f4926162f05 in start_thread (arg=0x7f48e11ba700) at pthread_create.c:301
#10 0x00007f4924efb53d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 6 (Thread 0x7f48e09b9700 (LWP 9637)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f49263f34bb in wait (time=18446744073709551615, this=0x11bb540) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x120fd50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f491a21d104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x12688d0, th=0x23dd9a0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f491a21f6ab in ThreadWeaver::WorkingHardState::applyForWork (this=0x11a4b60, th=0x23dd9a0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f491a21e56f in ThreadWeaver::ThreadRunHelper::run (this=0x7f48e09b8d80, parent=0x12688d0, th=0x23dd9a0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f491a21e5fb in ThreadWeaver::Thread::run (this=0x23dd9a0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f49263f3025 in QThreadPrivate::start (arg=0x23dd9a0) at thread/qthread_unix.cpp:331
#8  0x00007f49175212da in ?? () from /usr/X11R6/lib64/libGL.so.1
#9  0x00007f4926162f05 in start_thread (arg=0x7f48e09b9700) at pthread_create.c:301
#10 0x00007f4924efb53d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 5 (Thread 0x7f48dbfff700 (LWP 9638)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f49263f34bb in wait (time=18446744073709551615, this=0x11bb540) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x120fd50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f491a21d104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x12688d0, th=0x291c900) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f491a21f6ab in ThreadWeaver::WorkingHardState::applyForWork (this=0x11a4b60, th=0x291c900) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f491a21e56f in ThreadWeaver::ThreadRunHelper::run (this=0x7f48dbffed80, parent=0x12688d0, th=0x291c900) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f491a21e5fb in ThreadWeaver::Thread::run (this=0x291c900) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f49263f3025 in QThreadPrivate::start (arg=0x291c900) at thread/qthread_unix.cpp:331
#8  0x00007f49175212da in ?? () from /usr/X11R6/lib64/libGL.so.1
#9  0x00007f4926162f05 in start_thread (arg=0x7f48dbfff700) at pthread_create.c:301
#10 0x00007f4924efb53d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 4 (Thread 0x7f48db54d700 (LWP 9641)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f49263f34bb in wait (time=18446744073709551615, this=0x11bb540) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x120fd50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f491a21d104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x12688d0, th=0x2941dd0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f491a21f6ab in ThreadWeaver::WorkingHardState::applyForWork (this=0x11a4b60, th=0x2941dd0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f491a21e56f in ThreadWeaver::ThreadRunHelper::run (this=0x7f48db54cd80, parent=0x12688d0, th=0x2941dd0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f491a21e5fb in ThreadWeaver::Thread::run (this=0x2941dd0) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f49263f3025 in QThreadPrivate::start (arg=0x2941dd0) at thread/qthread_unix.cpp:331
#8  0x00007f49175212da in ?? () from /usr/X11R6/lib64/libGL.so.1
#9  0x00007f4926162f05 in start_thread (arg=0x7f48db54d700) at pthread_create.c:301
#10 0x00007f4924efb53d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 3 (Thread 0x7f48dad4c700 (LWP 9642)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f49263f34bb in wait (time=18446744073709551615, this=0x11bb540) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x120fd50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f491a21d104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x12688d0, th=0x253df90) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f491a21f6ab in ThreadWeaver::WorkingHardState::applyForWork (this=0x11a4b60, th=0x253df90) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f491a21f6c4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x11a4b60, th=0x253df90) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f491a21e56f in ThreadWeaver::ThreadRunHelper::run (this=0x7f48dad4bd80, parent=0x12688d0, th=0x253df90) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#7  0x00007f491a21e5fb in ThreadWeaver::Thread::run (this=0x253df90) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#8  0x00007f49263f3025 in QThreadPrivate::start (arg=0x253df90) at thread/qthread_unix.cpp:331
#9  0x00007f49175212da in ?? () from /usr/X11R6/lib64/libGL.so.1
#10 0x00007f4926162f05 in start_thread (arg=0x7f48dad4c700) at pthread_create.c:301
#11 0x00007f4924efb53d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 2 (Thread 0x7f48da54b700 (LWP 9643)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f49263f34bb in wait (time=18446744073709551615, this=0x11bb540) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x120fd50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f491a21d104 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x12688d0, th=0x26e2570) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f491a21f6ab in ThreadWeaver::WorkingHardState::applyForWork (this=0x11a4b60, th=0x26e2570) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f491a21f6c4 in ThreadWeaver::WorkingHardState::applyForWork (this=0x11a4b60, th=0x26e2570) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f491a21e56f in ThreadWeaver::ThreadRunHelper::run (this=0x7f48da54ad80, parent=0x12688d0, th=0x26e2570) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:87
#7  0x00007f491a21e5fb in ThreadWeaver::Thread::run (this=0x26e2570) at /usr/src/debug/kdelibs-4.7.2/threadweaver/Weaver/Thread.cpp:142
#8  0x00007f49263f3025 in QThreadPrivate::start (arg=0x26e2570) at thread/qthread_unix.cpp:331
#9  0x00007f49175212da in ?? () from /usr/X11R6/lib64/libGL.so.1
#10 0x00007f4926162f05 in start_thread (arg=0x7f48da54b700) at pthread_create.c:301
#11 0x00007f4924efb53d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7f492787a760 (LWP 2840)):
[KCrash Handler]
#6  0x00007f492613e8d0 in vtable for QGraphicsLayoutItem () from /usr/lib64/libQtGui.so.4
#7  0x00007f490b428cc6 in TaskGroupItem::~TaskGroupItem (this=0x27b1e10, __in_chrg=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#8  0x00007f490b428d79 in TaskGroupItem::~TaskGroupItem (this=0x27b1e10, __in_chrg=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/applets/tasks/taskgroupitem.cpp:83
#9  0x00007f49264f0178 in QObject::event (this=0x27b1e10, e=<optimized out>) at kernel/qobject.cpp:1209
#10 0x00007f4925ca527b in QGraphicsWidget::event (this=0x27b1e10, event=0x22be380) at graphicsview/qgraphicswidget.cpp:1455
#11 0x00007f492568bbe4 in notify_helper (e=0x22be380, receiver=0x27b1e10, this=0x723940) at kernel/qapplication.cpp:4481
#12 QApplicationPrivate::notify_helper (this=0x723940, receiver=0x27b1e10, e=0x22be380) at kernel/qapplication.cpp:4453
#13 0x00007f4925690a71 in QApplication::notify (this=0x6fbe10, receiver=0x27b1e10, e=0x22be380) at kernel/qapplication.cpp:4360
#14 0x00007f492726be36 in KApplication::notify (this=0x6fbe10, receiver=0x27b1e10, event=0x22be380) at /usr/src/debug/kdelibs-4.7.2/kdeui/kernel/kapplication.cpp:311
#15 0x00007f49264d981c in QCoreApplication::notifyInternal (this=0x6fbe10, receiver=0x27b1e10, event=0x22be380) at kernel/qcoreapplication.cpp:787
#16 0x00007f49264dcbf8 in sendEvent (event=0x22be380, receiver=0x27b1e10) at kernel/qcoreapplication.h:215
#17 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0x615800) at kernel/qcoreapplication.cpp:1428
#18 0x00007f49264dce1e in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1071
#19 0x00007f49132dc773 in kdemain (argc=1, argv=0x74f1b0) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/shell/main.cpp:120
#20 0x0000000000408897 in _start ()