Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
Tried after a system update (update of some packages) to run the requested system restart while a few windows where still open (shortly before I closed a virtual box session). System was running since yesterday and was in the meantime sleeping on HD.

-- Backtrace:
Application: Plasma-Desktop-Umgebung (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f30204b57a0 (LWP 2082))]

Thread 8 (Thread 0x7f2ff3465700 (LWP 2086)):
#0  __pthread_mutex_unlock (mutex=0x7f301cf8c490) at pthread_mutex_unlock.c:289
#1  0x00007f3014324fe4 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3014325dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3014326429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f301cf8cf3e in QEventDispatcherGlib::processEvents (this=0x7f2fec0008b0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f301cf60cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f301cf60ef7 in QEventLoop::exec (this=0x7f2ff3464db0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f301ce7827f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007f301cf43cbf in QInotifyFileSystemWatcherEngine::run (this=0x1e4a550) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f301ce7ad05 in QThreadPrivate::start (arg=0x1e4a550) at thread/qthread_unix.cpp:331
#10 0x00007f3014e32efc in start_thread (arg=0x7f2ff3465700) at pthread_create.c:304
#11 0x00007f301fda689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f2ff0984700 (LWP 2087)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007f2ff0983ad0 in ?? ()
#2  0x00007fff161b87e7 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 6 (Thread 0x7f2fe918b700 (LWP 2096)):
#0  0x00007f3014e3503e in __pthread_mutex_lock (mutex=0x250d2d8) at pthread_mutex_lock.c:62
#1  0x00007f3014325023 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3014325dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3014326792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2fe9c69516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007f301434b2b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f3014e32efc in start_thread (arg=0x7f2fe918b700) at pthread_create.c:304
#7  0x00007f301fda689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f2feb9bb700 (LWP 15330)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f301ce7b1ab in wait (time=18446744073709551615, this=0x1eaf470) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1eaa240, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f3018c75864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1f1e9f0, th=0x31f0550) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f3018c77e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1eaa200, th=0x31f0550) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f3018c76ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f2feb9bae00, parent=0x1f1e9f0, th=0x31f0550) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f3018c76d5b in ThreadWeaver::Thread::run (this=0x31f0550) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f301ce7ad05 in QThreadPrivate::start (arg=0x31f0550) at thread/qthread_unix.cpp:331
#8  0x00007f3014e32efc in start_thread (arg=0x7f2feb9bb700) at pthread_create.c:304
#9  0x00007f301fda689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f2fe998c700 (LWP 15331)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f301ce7b1ab in wait (time=18446744073709551615, this=0x1eaf470) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1eaa240, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f3018c75864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1f1e9f0, th=0x34215b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f3018c77e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1eaa200, th=0x34215b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f3018c76ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f2fe998be00, parent=0x1f1e9f0, th=0x34215b0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f3018c76d5b in ThreadWeaver::Thread::run (this=0x34215b0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f301ce7ad05 in QThreadPrivate::start (arg=0x34215b0) at thread/qthread_unix.cpp:331
#8  0x00007f3014e32efc in start_thread (arg=0x7f2fe998c700) at pthread_create.c:304
#9  0x00007f301fda689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f2fe2762700 (LWP 15332)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f301ce7b1ab in wait (time=18446744073709551615, this=0x1eaf470) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1eaa240, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f3018c75864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1f1e9f0, th=0x7f2fec020e50) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f3018c77e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1eaa200, th=0x7f2fec020e50) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f3018c76ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f2fe2761e00, parent=0x1f1e9f0, th=0x7f2fec020e50) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f3018c76d5b in ThreadWeaver::Thread::run (this=0x7f2fec020e50) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f301ce7ad05 in QThreadPrivate::start (arg=0x7f2fec020e50) at thread/qthread_unix.cpp:331
#8  0x00007f3014e32efc in start_thread (arg=0x7f2fe2762700) at pthread_create.c:304
#9  0x00007f301fda689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f2fe1f61700 (LWP 15333)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f301ce7b1ab in wait (time=18446744073709551615, this=0x1eaf470) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1eaa240, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f3018c75864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1f1e9f0, th=0x32df270) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f3018c77e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1eaa200, th=0x32df270) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f3018c77e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1eaa200, th=0x32df270) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f3018c76ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f2fe1f60e00, parent=0x1f1e9f0, th=0x32df270) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f3018c76d5b in ThreadWeaver::Thread::run (this=0x32df270) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f301ce7ad05 in QThreadPrivate::start (arg=0x32df270) at thread/qthread_unix.cpp:331
#9  0x00007f3014e32efc in start_thread (arg=0x7f2fe1f61700) at pthread_create.c:304
#10 0x00007f301fda689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f30204b57a0 (LWP 2082)):
[KCrash Handler]
#6  0x00007f301cdcc790 in vtable for QGraphicsLayoutItem () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#7  0x00007f30000d8b96 in TaskGroupItem::~TaskGroupItem (this=0x2e4c790, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#8  0x00007f30000d8c49 in TaskGroupItem::~TaskGroupItem (this=0x2e4c790, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:83
#9  0x00007f301cf78a88 in QObject::event (this=0x2e4c790, e=<optimized out>) at kernel/qobject.cpp:1200
#10 0x00007f301c93089b in QGraphicsWidget::event (this=0x2e4c790, event=0x31d8180) at graphicsview/qgraphicswidget.cpp:1455
#11 0x00007f301c312424 in notify_helper (e=0x31d8180, receiver=0x2e4c790, this=0xe59140) at kernel/qapplication.cpp:4486
#12 QApplicationPrivate::notify_helper (this=0xe59140, receiver=0x2e4c790, e=0x31d8180) at kernel/qapplication.cpp:4458
#13 0x00007f301c317291 in QApplication::notify (this=0xe455b0, receiver=0x2e4c790, e=0x31d8180) at kernel/qapplication.cpp:4365
#14 0x00007f301dc10126 in KApplication::notify (this=0xe455b0, receiver=0x2e4c790, event=0x31d8180) at ../../kdeui/kernel/kapplication.cpp:311
#15 0x00007f301cf61afc in QCoreApplication::notifyInternal (this=0xe455b0, receiver=0x2e4c790, event=0x31d8180) at kernel/qcoreapplication.cpp:787
#16 0x00007f301cf6551f in sendEvent (event=0x31d8180, receiver=0x2e4c790) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#17 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0xddd430) at kernel/qcoreapplication.cpp:1428
#18 0x00007f301cf657c4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1071
#19 0x00007f30200a51a3 in kdemain (argc=1, argv=0x7fff160f0138) at ../../../../plasma/desktop/shell/main.cpp:120
#20 0x00007f301fce630d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff160f0138, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff160f0128) at libc-start.c:226
#21 0x0000000000400671 in _start ()

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

Possible duplicates by query: bug 285045, bug 284034, bug 283472, bug 279613, bug 279335.

Reported using DrKonqi