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:
I was logging out from system. This happens everytime when I use any of commands: switch, logging out, shutdow, reboot. of desktops.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f2959bcb7a0 (LWP 17017))]

Thread 8 (Thread 0x7f2936b4a700 (LWP 17019)):
#0  0x00007fffe41ff811 in ?? ()
#1  0x00007f294dceb07b in __GI_clock_gettime (clock_id=1, tp=0x7f2936b49b20) at ../sysdeps/unix/clock_gettime.c:100
#2  0x00007f29565db074 in do_gettime (frac=0x7f2936b49b38, sec=0x7f2936b49b30) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0x00007f295669d6ed in QTimerInfoList::updateCurrentTime (this=0x24b1ad0) at kernel/qeventdispatcher_unix.cpp:339
#5  0x00007f295669da33 in QTimerInfoList::timerWait (this=0x24b1ad0, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#6  0x00007f295669c44c in timerSourcePrepareHelper (src=<optimized out>, timeout=0x7f2936b49c1c) at kernel/qeventdispatcher_glib.cpp:136
#7  0x00007f295669c4f5 in timerSourcePrepare (source=<optimized out>, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#8  0x00007f294da34ff2 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f294da35dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f294da36429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f295669cf3e in QEventDispatcherGlib::processEvents (this=0x24a0ac0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#12 0x00007f2956670cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#13 0x00007f2956670ef7 in QEventLoop::exec (this=0x7f2936b49db0, flags=...) at kernel/qeventloop.cpp:201
#14 0x00007f295658827f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#15 0x00007f2956653cbf in QInotifyFileSystemWatcherEngine::run (this=0x24aea90) at io/qfilesystemwatcher_inotify.cpp:248
#16 0x00007f295658ad05 in QThreadPrivate::start (arg=0x24aea90) at thread/qthread_unix.cpp:331
#17 0x00007f294e542efc in start_thread (arg=0x7f2936b4a700) at pthread_create.c:304
#18 0x00007f29594b689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#19 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f292ffff700 (LWP 17020)):
#0  0x00007f294e5461fd in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x265b7a8) at pthread_mutex_unlock.c:290
#2  0x00007f294da35900 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f294da36258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f294da36429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f295669cf3e in QEventDispatcherGlib::processEvents (this=0x2303ff0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f2956670cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f2956670ef7 in QEventLoop::exec (this=0x7f292fffedb0, flags=...) at kernel/qeventloop.cpp:201
#8  0x00007f295658827f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#9  0x00007f2956653cbf in QInotifyFileSystemWatcherEngine::run (this=0x1fc46a0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f295658ad05 in QThreadPrivate::start (arg=0x1fc46a0) at thread/qthread_unix.cpp:331
#11 0x00007f294e542efc in start_thread (arg=0x7f292ffff700) at pthread_create.c:304
#12 0x00007f29594b689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f292cdb0700 (LWP 17026)):
#0  0x00007f294e545034 in __pthread_mutex_lock (mutex=0x2866ef8) at pthread_mutex_lock.c:61
#1  0x00007f294da358c2 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f294da36258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f294da36792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f292d88e516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007f294da5b2b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f294e542efc in start_thread (arg=0x7f292cdb0700) at pthread_create.c:304
#7  0x00007f29594b689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f292f1ba700 (LWP 17412)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f295658b1ab in wait (time=18446744073709551615, this=0x2505a60) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x24fac80, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f2952385864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x258a8f0, th=0x2466920) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f2952387e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x24d9650, th=0x2466920) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f2952387e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x24d9650, th=0x2466920) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f2952387e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x24d9650, th=0x2466920) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007f2952386ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f292f1b9e00, parent=0x258a8f0, th=0x2466920) at ../../../threadweaver/Weaver/Thread.cpp:87
#8  0x00007f2952386d5b in ThreadWeaver::Thread::run (this=0x2466920) at ../../../threadweaver/Weaver/Thread.cpp:142
#9  0x00007f295658ad05 in QThreadPrivate::start (arg=0x2466920) at thread/qthread_unix.cpp:331
#10 0x00007f294e542efc in start_thread (arg=0x7f292f1ba700) at pthread_create.c:304
#11 0x00007f29594b689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f292d5b1700 (LWP 17413)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f295658b1ab in wait (time=18446744073709551615, this=0x2505a60) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x24fac80, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f2952385864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x258a8f0, th=0x2b4c8f0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f2952387e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x24d9650, th=0x2b4c8f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f2952386ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f292d5b0e00, parent=0x258a8f0, th=0x2b4c8f0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f2952386d5b in ThreadWeaver::Thread::run (this=0x2b4c8f0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f295658ad05 in QThreadPrivate::start (arg=0x2b4c8f0) at thread/qthread_unix.cpp:331
#8  0x00007f294e542efc in start_thread (arg=0x7f292d5b1700) at pthread_create.c:304
#9  0x00007f29594b689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f292b289700 (LWP 17414)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f295658b1ab in wait (time=18446744073709551615, this=0x2505a60) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x24fac80, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f2952385864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x258a8f0, th=0x346bbb0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f2952387e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x24d9650, th=0x346bbb0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f2952387e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x24d9650, th=0x346bbb0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f2952386ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f292b288e00, parent=0x258a8f0, th=0x346bbb0) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f2952386d5b in ThreadWeaver::Thread::run (this=0x346bbb0) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f295658ad05 in QThreadPrivate::start (arg=0x346bbb0) at thread/qthread_unix.cpp:331
#9  0x00007f294e542efc in start_thread (arg=0x7f292b289700) at pthread_create.c:304
#10 0x00007f29594b689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f2929551700 (LWP 17415)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f295658b1ab in wait (time=18446744073709551615, this=0x2505a60) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x24fac80, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f2952385864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x258a8f0, th=0x24ed680) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f2952387e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x24d9650, th=0x24ed680) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f2952386ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f2929550e00, parent=0x258a8f0, th=0x24ed680) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f2952386d5b in ThreadWeaver::Thread::run (this=0x24ed680) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f295658ad05 in QThreadPrivate::start (arg=0x24ed680) at thread/qthread_unix.cpp:331
#8  0x00007f294e542efc in start_thread (arg=0x7f2929551700) at pthread_create.c:304
#9  0x00007f29594b689d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2959bcb7a0 (LWP 17017)):
[KCrash Handler]
#6  0x00007f293fd3bb93 in TaskGroupItem::~TaskGroupItem (this=0x3da9f40, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#7  0x00007f293fd3bc49 in TaskGroupItem::~TaskGroupItem (this=0x3da9f40, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:83
#8  0x00007f2956688a88 in QObject::event (this=0x3da9f40, e=<optimized out>) at kernel/qobject.cpp:1200
#9  0x00007f295604089b in QGraphicsWidget::event (this=0x3da9f40, event=0x3741900) at graphicsview/qgraphicswidget.cpp:1455
#10 0x00007f2955a22424 in notify_helper (e=0x3741900, receiver=0x3da9f40, this=0x1a31230) at kernel/qapplication.cpp:4486
#11 QApplicationPrivate::notify_helper (this=0x1a31230, receiver=0x3da9f40, e=0x3741900) at kernel/qapplication.cpp:4458
#12 0x00007f2955a27291 in QApplication::notify (this=0x1a25c20, receiver=0x3da9f40, e=0x3741900) at kernel/qapplication.cpp:4365
#13 0x00007f2957320126 in KApplication::notify (this=0x1a25c20, receiver=0x3da9f40, event=0x3741900) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007f2956671afc in QCoreApplication::notifyInternal (this=0x1a25c20, receiver=0x3da9f40, event=0x3741900) at kernel/qcoreapplication.cpp:787
#15 0x00007f295667551f in sendEvent (event=0x3741900, receiver=0x3da9f40) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#16 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0x19c5430) at kernel/qcoreapplication.cpp:1428
#17 0x00007f29566757c4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1071
#18 0x00007f29597b51a3 in kdemain (argc=1, argv=0x7fffe41a49e8) at ../../../../plasma/desktop/shell/main.cpp:120
#19 0x00007f29593f630d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffe41a49e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe41a49d8) at libc-start.c:226
#20 0x0000000000400671 in _start ()

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

Possible duplicates by query: bug 286335, bug 286031, bug 286027, bug 285724, bug 285717.

Reported using DrKonqi