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-pae i686
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:

I tried to copy file from Krusader when plasma suddenly crashed.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb02b8720 (LWP 1853))]

Thread 7 (Thread 0xa6ef0b70 (LWP 1882)):
#0  __pthread_mutex_unlock (mutex=0x9792244) at pthread_mutex_unlock.c:290
#1  0xb7677f54 in pthread_mutex_unlock (mutex=0x9792244) at forward.c:184
#2  0xb2f3c87f in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2f3d637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2f3dc2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb64b5b37 in QEventDispatcherGlib::processEvents (this=0x97a4d18, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0xb64861dd in QEventLoop::processEvents (this=0xa6ef01f0, flags=...) at kernel/qeventloop.cpp:149
#7  0xb6486421 in QEventLoop::exec (this=0xa6ef01f0, flags=...) at kernel/qeventloop.cpp:201
#8  0xb638990b in QThread::exec (this=0x9795b60) at thread/qthread.cpp:498
#9  0xb6466e2d in QInotifyFileSystemWatcherEngine::run (this=0x9795b60) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb638c7b3 in QThreadPrivate::start (arg=0x9795b60) at thread/qthread_unix.cpp:331
#11 0xb26a6a9c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#12 0x00000000 in ?? ()

Thread 6 (Thread 0xa521eb70 (LWP 1883)):
#0  0xb2ff7d10 in __GI_clock_gettime (clock_id=1, tp=0xa521df68) at ../sysdeps/unix/clock_gettime.c:116
#1  0xb63e37d5 in do_gettime (frac=0xa521df60, sec=0xa521df58) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0xb64b64b6 in QTimerInfoList::updateCurrentTime (this=0x9939c04) at kernel/qeventdispatcher_unix.cpp:339
#4  0xb64b680a in QTimerInfoList::timerWait (this=0x9939c04, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0xb64b5053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa521e06c) at kernel/qeventdispatcher_glib.cpp:136
#6  0xb64b50ed in timerSourcePrepare (source=0x9939bd0, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0xb2f3c88c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb2f3d637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb2f3dc2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb64b5b37 in QEventDispatcherGlib::processEvents (this=0x993a3b0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0xb64861dd in QEventLoop::processEvents (this=0xa521e1f0, flags=...) at kernel/qeventloop.cpp:149
#12 0xb6486421 in QEventLoop::exec (this=0xa521e1f0, flags=...) at kernel/qeventloop.cpp:201
#13 0xb638990b in QThread::exec (this=0x9934d98) at thread/qthread.cpp:498
#14 0xb6466e2d in QInotifyFileSystemWatcherEngine::run (this=0x9934d98) at io/qfilesystemwatcher_inotify.cpp:248
#15 0xb638c7b3 in QThreadPrivate::start (arg=0x9934d98) at thread/qthread_unix.cpp:331
#16 0xb26a6a9c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#17 0x00000000 in ?? ()

Thread 5 (Thread 0xa169fb70 (LWP 4737)):
#0  0xb77b9424 in __kernel_vsyscall ()
#1  0xb305ba5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0xb7677cfc in __pthread_cond_wait (cond=0x97e1ce8, mutex=0x97e1cd0) at forward.c:139
#3  0xb638ccc0 in wait (time=4294967295, this=0x97e1cd0) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x97e2860, mutex=0x97b6100, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0xb382b406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x97e2848, th=0xa13a720) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0xb382decb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x97b6318, th=0xa13a720) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0xb382b03a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x97e2848, th=0xa13a720) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0xb382dfcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x97b6318, th=0xa13a720) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0xb382af93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x97e2848, th=0xa13a720, previous=0xa579e90) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0xb382cb14 in ThreadWeaver::ThreadRunHelper::run (this=0xa169f254, parent=0x97e2848, th=0xa13a720) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0xb382cbca in ThreadWeaver::Thread::run (this=0xa13a720) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0xb638c7b3 in QThreadPrivate::start (arg=0xa13a720) at thread/qthread_unix.cpp:331
#13 0xb26a6a9c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#14 0x00000000 in ?? ()

Thread 4 (Thread 0xa465ab70 (LWP 4738)):
#0  0xb77b9424 in __kernel_vsyscall ()
#1  0xb305ba5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0xb7677cfc in __pthread_cond_wait (cond=0x97e1ce8, mutex=0x97e1cd0) at forward.c:139
#3  0xb638ccc0 in wait (time=4294967295, this=0x97e1cd0) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x97e2860, mutex=0x97b6100, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0xb382b406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x97e2848, th=0xac821a8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0xb382decb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x97b6318, th=0xac821a8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0xb382b03a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x97e2848, th=0xac821a8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0xb382dfcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x97b6318, th=0xac821a8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0xb382af93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x97e2848, th=0xac821a8, previous=0xac6e948) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0xb382cb14 in ThreadWeaver::ThreadRunHelper::run (this=0xa465a254, parent=0x97e2848, th=0xac821a8) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0xb382cbca in ThreadWeaver::Thread::run (this=0xac821a8) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0xb638c7b3 in QThreadPrivate::start (arg=0xac821a8) at thread/qthread_unix.cpp:331
#13 0xb26a6a9c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#14 0x00000000 in ?? ()

Thread 3 (Thread 0x9e1bab70 (LWP 4739)):
#0  0xb77b9424 in __kernel_vsyscall ()
#1  0xb305ba5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0xb7677cfc in __pthread_cond_wait (cond=0x97e1ce8, mutex=0x97e1cd0) at forward.c:139
#3  0xb638ccc0 in wait (time=4294967295, this=0x97e1cd0) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x97e2860, mutex=0x97b6100, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0xb382b406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x97e2848, th=0x9dcb208) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0xb382decb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x97b6318, th=0x9dcb208) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0xb382b03a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x97e2848, th=0x9dcb208) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0xb382dfcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x97b6318, th=0x9dcb208) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0xb382af93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x97e2848, th=0x9dcb208, previous=0xa745a18) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0xb382cb14 in ThreadWeaver::ThreadRunHelper::run (this=0x9e1ba254, parent=0x97e2848, th=0x9dcb208) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0xb382cbca in ThreadWeaver::Thread::run (this=0x9dcb208) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0xb638c7b3 in QThreadPrivate::start (arg=0x9dcb208) at thread/qthread_unix.cpp:331
#13 0xb26a6a9c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#14 0x00000000 in ?? ()

Thread 2 (Thread 0x9d9b9b70 (LWP 4740)):
#0  0xb77b9424 in __kernel_vsyscall ()
#1  0xb305ba5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0xb7677cfc in __pthread_cond_wait (cond=0x97e1ce8, mutex=0x97e1cd0) at forward.c:139
#3  0xb638ccc0 in wait (time=4294967295, this=0x97e1cd0) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x97e2860, mutex=0x97b6100, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0xb382b406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x97e2848, th=0x99e2ba8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0xb382decb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x97b6318, th=0x99e2ba8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0xb382b03a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x97e2848, th=0x99e2ba8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0xb382dfcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x97b6318, th=0x99e2ba8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0xb382af93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x97e2848, th=0x99e2ba8, previous=0xada9fd8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0xb382cb14 in ThreadWeaver::ThreadRunHelper::run (this=0x9d9b9254, parent=0x97e2848, th=0x99e2ba8) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0xb382cbca in ThreadWeaver::Thread::run (this=0x99e2ba8) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0xb638c7b3 in QThreadPrivate::start (arg=0x99e2ba8) at thread/qthread_unix.cpp:331
#13 0xb26a6a9c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#14 0x00000000 in ?? ()

Thread 1 (Thread 0xb02b8720 (LWP 1853)):
[KCrash Handler]
#7  isNull (this=0x4) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#8  operator! (this=0x4) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#9  TaskManager::TaskItem::task (this=0xacd8d68) at ../../../libs/taskmanager/taskitem.cpp:113
#10 0xaee80590 in WindowTaskItem::publishIconGeometry (this=0xacf50d8, rect=...) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:130
#11 0xaee92b24 in TaskGroupItem::publishIconGeometry (this=0xb446728, rect=...) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1438
#12 0xaee92801 in publishIconGeometry (this=0xb446728) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1424
#13 TaskGroupItem::publishIconGeometry (this=0xb446728) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1416
#14 0xaee91688 in AbstractTaskItem::timerEvent (this=0xb446728, event=0xbf8bd68c) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#15 0xb649f994 in QObject::event (this=0xb446728, e=0xbf8bd68c) at kernel/qobject.cpp:1181
#16 0xb6071bd4 in QGraphicsWidget::event (this=0xb446728, event=0xbf8bd68c) at graphicsview/qgraphicswidget.cpp:1455
#17 0xb59b2d54 in notify_helper (e=0xbf8bd68c, receiver=0xb446728, this=0x8c19c38) at kernel/qapplication.cpp:4486
#18 QApplicationPrivate::notify_helper (this=0x8c19c38, receiver=0xb446728, e=0xbf8bd68c) at kernel/qapplication.cpp:4458
#19 0xb59b8103 in QApplication::notify (this=0xbf8bd68c, receiver=0xb446728, e=0xbf8bd68c) at kernel/qapplication.cpp:3886
#20 0xb6aec681 in KApplication::notify (this=0x8c01900, receiver=0xb446728, event=0xbf8bd68c) at ../../kdeui/kernel/kapplication.cpp:311
#21 0xb648719e in QCoreApplication::notifyInternal (this=0x8c01900, receiver=0xb446728, event=0xbf8bd68c) at kernel/qcoreapplication.cpp:787
#22 0xb64b7c10 in sendEvent (event=0xbf8bd68c, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#23 QTimerInfoList::activateTimers (this=0x8c19234) at kernel/qeventdispatcher_unix.cpp:603
#24 0xb64b5122 in timerSourceDispatch (source=0x8c19200) at kernel/qeventdispatcher_glib.cpp:184
#25 0xb2f3d25f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#26 0xb2f3d990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#27 0xb2f3dc2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#28 0xb64b5ada in QEventDispatcherGlib::processEvents (this=0x8b80218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#29 0xb5a6ae3a in QGuiEventDispatcherGlib::processEvents (this=0x8b80218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#30 0xb64861dd in QEventLoop::processEvents (this=0xbf8bd904, flags=...) at kernel/qeventloop.cpp:149
#31 0xb6486421 in QEventLoop::exec (this=0xbf8bd904, flags=...) at kernel/qeventloop.cpp:201
#32 0xb648b19d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#33 0xb59b08f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#34 0xb776e18b in kdemain (argc=1, argv=0xbf8bdb04) at ../../../../plasma/desktop/shell/main.cpp:120
#35 0x0804850b in main (argc=1, argv=0xbf8bdb04) at plasma-desktop_dummy.cpp:3

This bug may be a duplicate of or related to bug 288818.

Possible duplicates by query: bug 289432, bug 289392, bug 289221, bug 289215, bug 289169.

Reported using DrKonqi