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:
- What I was doing when the application crashed:

I closed Krusader and then the plasma crashed compelely. It recovered itself again with a crash message.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma bureaublad-shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f199beb87c0 (LWP 22578))]

Thread 7 (Thread 0x7f19764e6700 (LWP 22579)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007f19764e59f0 in ?? ()
#2  0x00007fff51dff7e7 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 6 (Thread 0x7f1974cab700 (LWP 22580)):
#0  0x00007f199b798773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f198fd22f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f198fd23429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1998989f3e in QEventDispatcherGlib::processEvents (this=0x17be810, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f199895dcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f199895def7 in QEventLoop::exec (this=0x7f1974caacd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f199887527f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f1998940cbf in QInotifyFileSystemWatcherEngine::run (this=0x1dfec70) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f1998877d05 in QThreadPrivate::start (arg=0x1dfec70) at thread/qthread_unix.cpp:331
#9  0x00007f198d03c56c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f199082fefc in start_thread (arg=0x7f1974cab700) at pthread_create.c:304
#11 0x00007f199b7a489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f196afcb700 (LWP 23759)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f19988781ab in wait (time=18446744073709551615, this=0x1d9f1b0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1da52f0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f1994672864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e11330, th=0x2a6a550) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f1994674e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d8db90, th=0x2a6a550) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f1994674e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d8db90, th=0x2a6a550) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f1994674e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d8db90, th=0x2a6a550) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007f1994673ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f196afcad20, parent=0x1e11330, th=0x2a6a550) at ../../../threadweaver/Weaver/Thread.cpp:87
#8  0x00007f1994673d5b in ThreadWeaver::Thread::run (this=0x2a6a550) at ../../../threadweaver/Weaver/Thread.cpp:142
#9  0x00007f1998877d05 in QThreadPrivate::start (arg=0x2a6a550) at thread/qthread_unix.cpp:331
#10 0x00007f198d03c56c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#11 0x00007f199082fefc in start_thread (arg=0x7f196afcb700) at pthread_create.c:304
#12 0x00007f199b7a489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f196a296700 (LWP 23760)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f19988781ab in wait (time=18446744073709551615, this=0x1d9f1b0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1da52f0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f1994672864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e11330, th=0x7f1970657300) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f1994674e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d8db90, th=0x7f1970657300) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f1994674e24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d8db90, th=0x7f1970657300) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007f1994673ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f196a295d20, parent=0x1e11330, th=0x7f1970657300) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007f1994673d5b in ThreadWeaver::Thread::run (this=0x7f1970657300) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007f1998877d05 in QThreadPrivate::start (arg=0x7f1970657300) at thread/qthread_unix.cpp:331
#9  0x00007f198d03c56c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f199082fefc in start_thread (arg=0x7f196a296700) at pthread_create.c:304
#11 0x00007f199b7a489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f196eda7700 (LWP 23761)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f19988781ab in wait (time=18446744073709551615, this=0x1d9f1b0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1da52f0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f1994672864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e11330, th=0x17bf8f0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f1994674e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d8db90, th=0x17bf8f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f1994673ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f196eda6d20, parent=0x1e11330, th=0x17bf8f0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f1994673d5b in ThreadWeaver::Thread::run (this=0x17bf8f0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f1998877d05 in QThreadPrivate::start (arg=0x17bf8f0) at thread/qthread_unix.cpp:331
#8  0x00007f198d03c56c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f199082fefc in start_thread (arg=0x7f196eda7700) at pthread_create.c:304
#10 0x00007f199b7a489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f1966cc6700 (LWP 23762)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f19988781ab in wait (time=18446744073709551615, this=0x1d9f1b0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1da52f0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f1994672864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e11330, th=0x2d19730) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f1994674e0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1d8db90, th=0x2d19730) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f1994673ccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f1966cc5d20, parent=0x1e11330, th=0x2d19730) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f1994673d5b in ThreadWeaver::Thread::run (this=0x2d19730) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f1998877d05 in QThreadPrivate::start (arg=0x2d19730) at thread/qthread_unix.cpp:331
#8  0x00007f198d03c56c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f199082fefc in start_thread (arg=0x7f1966cc6700) at pthread_create.c:304
#10 0x00007f199b7a489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f199beb87c0 (LWP 22578)):
[KCrash Handler]
#6  isNull (this=0x4000400000020) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x4000400000020) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x242c500) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007f1980926112 in WindowTaskItem::publishIconGeometry (this=0x3bd3fb0) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007f1980934b7c in AbstractTaskItem::timerEvent (this=0x3bd3fb0, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007f1998975789 in QObject::event (this=0x3bd3fb0, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007f199832d89b in QGraphicsWidget::event (this=0x3bd3fb0, event=0x7fff51d91950) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007f1997d0f424 in notify_helper (e=0x7fff51d91950, receiver=0x3bd3fb0, this=0x1203960) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0x1203960, receiver=0x3bd3fb0, e=0x7fff51d91950) at kernel/qapplication.cpp:4458
#15 0x00007f1997d14291 in QApplication::notify (this=0x11e6160, receiver=0x3bd3fb0, e=0x7fff51d91950) at kernel/qapplication.cpp:4365
#16 0x00007f199960d126 in KApplication::notify (this=0x11e6160, receiver=0x3bd3fb0, event=0x7fff51d91950) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007f199895eafc in QCoreApplication::notifyInternal (this=0x11e6160, receiver=0x3bd3fb0, event=0x7fff51d91950) at kernel/qcoreapplication.cpp:787
#18 0x00007f199898bd62 in sendEvent (event=0x7fff51d91950, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x120b700) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007f1998989538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007f198fd22a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f198fd23258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f198fd23429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f1998989ed6 in QEventDispatcherGlib::processEvents (this=0x1143f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007f1997db707e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007f199895dcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f199895def7 in QEventLoop::exec (this=0x7fff51d91be0, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007f1998962789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007f199baa31a3 in kdemain (argc=1, argv=0x7fff51d91fc8) at ../../../../plasma/desktop/shell/main.cpp:120
#31 0x00007f199b6e430d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff51d91fc8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff51d91fb8) at libc-start.c:226
#32 0x0000000000400671 in _start ()

Possible duplicates by query: bug 290700, bug 290686, bug 290685, bug 290677, bug 290674.

Reported using DrKonqi