Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-14-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
Nothing specific, general activity with several windows open

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fc60c6e77a0 (LWP 2059))]

Thread 8 (Thread 0x7fc5e9a97700 (LWP 2061)):
#0  0x00007fc60bfc8773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fc600552f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc600553429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc6091b9f3e in QEventDispatcherGlib::processEvents (this=0x2a44d40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fc60918dcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fc60918def7 in QEventLoop::exec (this=0x7fc5e9a96db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fc6090a527f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007fc609170cbf in QInotifyFileSystemWatcherEngine::run (this=0x2a40c10) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fc6090a7d05 in QThreadPrivate::start (arg=0x2a40c10) at thread/qthread_unix.cpp:331
#9  0x00007fc60105fefc in start_thread (arg=0x7fc5e9a97700) at pthread_create.c:304
#10 0x00007fc60bfd489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7fc5e2fbf700 (LWP 2062)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007fc5e2fbead0 in ?? ()
#2  0x00007fff6d7ff7e7 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 6 (Thread 0x7fc5dd233700 (LWP 2070)):
#0  0x00007fc60bfc8773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fc600552f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc600553792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc5ddd11516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fc6005782b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fc60105fefc in start_thread (arg=0x7fc5dd233700) at pthread_create.c:304
#6  0x00007fc60bfd489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fc5dfa63700 (LWP 2768)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fc6090a81ab in wait (time=18446744073709551615, this=0x2ac5300) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2abf0f0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fc604ea2864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ab0e40, th=0x31bc590) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fc604ea4e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ab4450, th=0x31bc590) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fc604ea4e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ab4450, th=0x31bc590) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007fc604ea4e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ab4450, th=0x31bc590) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007fc604ea3ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fc5dfa62e00, parent=0x2ab0e40, th=0x31bc590) at ../../../threadweaver/Weaver/Thread.cpp:87
#8  0x00007fc604ea3d5b in ThreadWeaver::Thread::run (this=0x31bc590) at ../../../threadweaver/Weaver/Thread.cpp:142
#9  0x00007fc6090a7d05 in QThreadPrivate::start (arg=0x31bc590) at thread/qthread_unix.cpp:331
#10 0x00007fc60105fefc in start_thread (arg=0x7fc5dfa63700) at pthread_create.c:304
#11 0x00007fc60bfd489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fc5dda34700 (LWP 2769)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fc6090a81ab in wait (time=18446744073709551615, this=0x2ac5300) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2abf0f0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fc604ea2864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ab0e40, th=0x30c4c60) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fc604ea4e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ab4450, th=0x30c4c60) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fc604ea3ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fc5dda33e00, parent=0x2ab0e40, th=0x30c4c60) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fc604ea3d5b in ThreadWeaver::Thread::run (this=0x30c4c60) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fc6090a7d05 in QThreadPrivate::start (arg=0x30c4c60) at thread/qthread_unix.cpp:331
#8  0x00007fc60105fefc in start_thread (arg=0x7fc5dda34700) at pthread_create.c:304
#9  0x00007fc60bfd489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fc5d5c39700 (LWP 2770)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fc6090a81ab in wait (time=18446744073709551615, this=0x2ac5300) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2abf0f0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fc604ea2864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ab0e40, th=0x3a08af0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fc604ea4e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ab4450, th=0x3a08af0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fc604ea3ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fc5d5c38e00, parent=0x2ab0e40, th=0x3a08af0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fc604ea3d5b in ThreadWeaver::Thread::run (this=0x3a08af0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fc6090a7d05 in QThreadPrivate::start (arg=0x3a08af0) at thread/qthread_unix.cpp:331
#8  0x00007fc60105fefc in start_thread (arg=0x7fc5d5c39700) at pthread_create.c:304
#9  0x00007fc60bfd489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fc5d5438700 (LWP 2771)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fc6090a81ab in wait (time=18446744073709551615, this=0x2ac5300) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2abf0f0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fc604ea2864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x2ab0e40, th=0x7fc5e4030e70) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fc604ea4e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x2ab4450, th=0x7fc5e4030e70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fc604ea3ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7fc5d5437e00, parent=0x2ab0e40, th=0x7fc5e4030e70) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fc604ea3d5b in ThreadWeaver::Thread::run (this=0x7fc5e4030e70) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fc6090a7d05 in QThreadPrivate::start (arg=0x7fc5e4030e70) at thread/qthread_unix.cpp:331
#8  0x00007fc60105fefc in start_thread (arg=0x7fc5d5438700) at pthread_create.c:304
#9  0x00007fc60bfd489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fc60c6e77a0 (LWP 2059)):
[KCrash Handler]
#6  isNull (this=0x3300310000) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x3300310000) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x235d130) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007fc5f2d57112 in WindowTaskItem::publishIconGeometry (this=0x5021be0) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007fc5f2d65b7c in AbstractTaskItem::timerEvent (this=0x5021be0, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007fc6091a5789 in QObject::event (this=0x5021be0, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007fc608b5d89b in QGraphicsWidget::event (this=0x5021be0, event=0x7fff6d768a70) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007fc60853f424 in notify_helper (e=0x7fff6d768a70, receiver=0x5021be0, this=0x21de1f0) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0x21de1f0, receiver=0x5021be0, e=0x7fff6d768a70) at kernel/qapplication.cpp:4458
#15 0x00007fc608544291 in QApplication::notify (this=0x21beba0, receiver=0x5021be0, e=0x7fff6d768a70) at kernel/qapplication.cpp:4365
#16 0x00007fc609e3d126 in KApplication::notify (this=0x21beba0, receiver=0x5021be0, event=0x7fff6d768a70) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007fc60918eafc in QCoreApplication::notifyInternal (this=0x21beba0, receiver=0x5021be0, event=0x7fff6d768a70) at kernel/qcoreapplication.cpp:787
#18 0x00007fc6091bbd62 in sendEvent (event=0x7fff6d768a70, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x21db4f0) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007fc6091b9538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007fc600552a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fc600553258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fc600553429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fc6091b9ed6 in QEventDispatcherGlib::processEvents (this=0x2162f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007fc6085e707e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007fc60918dcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007fc60918def7 in QEventLoop::exec (this=0x7fff6d768d00, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007fc609192789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007fc60c2d31a3 in kdemain (argc=1, argv=0x7fff6d7690e8) at ../../../../plasma/desktop/shell/main.cpp:120
#31 0x00007fc60bf1430d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff6d7690e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff6d7690d8) at libc-start.c:226
#32 0x0000000000400671 in _start ()

Possible duplicates by query: bug 291257, bug 291255, bug 291241, bug 291225, bug 291218.

Reported using DrKonqi