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 i686
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed: 
Plasma crashes now and then, when ever I try to quit multiple windows, drag and frop folders, even sometimes when try to minimize or maximize windows. This time I was dragging and droping a folder to amarock. I dragged the folder to the panel and before I can drop the folder to amarock, plasma crashed.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7816b20 (LWP 16268))]

Thread 8 (Thread 0xb18eeb70 (LWP 16270)):
#0  0x01ad8d10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x01ba57d5 in do_gettime (frac=0xb18ee010, sec=0xb18ee008) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x01c784b6 in QTimerInfoList::updateCurrentTime (this=0x8466cbc) at kernel/qeventdispatcher_unix.cpp:339
#4  0x01c7880a in QTimerInfoList::timerWait (this=0x8466cbc, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x01c77053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xb18ee11c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x01c770ed in timerSourcePrepare (source=0x8466c88, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x04ada88c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0x04adb637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0x04adbc2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0x01c77b37 in QEventDispatcherGlib::processEvents (this=0x898df48, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x01c481dd in QEventLoop::processEvents (this=0xb18ee2a0, flags=...) at kernel/qeventloop.cpp:149
#12 0x01c48421 in QEventLoop::exec (this=0xb18ee2a0, flags=...) at kernel/qeventloop.cpp:201
#13 0x01b4b90b in QThread::exec (this=0x897e790) at thread/qthread.cpp:498
#14 0x01c28e2d in QInotifyFileSystemWatcherEngine::run (this=0x897e790) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x01b4e7b3 in QThreadPrivate::start (arg=0x897e790) at thread/qthread_unix.cpp:331
#16 0x01e42d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0x009ae0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 7 (Thread 0xaffedb70 (LWP 16271)):
#0  0x01ad8d10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x01ba57d5 in do_gettime (frac=0xaffed010, sec=0xaffed008) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x01c784b6 in QTimerInfoList::updateCurrentTime (this=0x8aeb434) at kernel/qeventdispatcher_unix.cpp:339
#4  0x01c7880a in QTimerInfoList::timerWait (this=0x8aeb434, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x01c77053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xaffed11c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x01c770ed in timerSourcePrepare (source=0x8aeb400, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x04ada88c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0x04adb637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0x04adbc2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0x01c77b37 in QEventDispatcherGlib::processEvents (this=0x8acfd70, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x01c481dd in QEventLoop::processEvents (this=0xaffed2a0, flags=...) at kernel/qeventloop.cpp:149
#12 0x01c48421 in QEventLoop::exec (this=0xaffed2a0, flags=...) at kernel/qeventloop.cpp:201
#13 0x01b4b90b in QThread::exec (this=0x8acaa08) at thread/qthread.cpp:498
#14 0x01c28e2d in QInotifyFileSystemWatcherEngine::run (this=0x8acaa08) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x01b4e7b3 in QThreadPrivate::start (arg=0x8acaa08) at thread/qthread_unix.cpp:331
#16 0x01e42d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0x009ae0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 6 (Thread 0xadbfeb70 (LWP 16276)):
#0  0x009bc130 in ?? () from /lib/i386-linux-gnu/libc.so.6
#1  0x0099f420 in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0x04aea34b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x04adb896 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x04adbf9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x07f6ecea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0x04b025f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0x01e42d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8  0x009ae0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 5 (Thread 0xae3ffb70 (LWP 16441)):
#0  0x002d3416 in __kernel_vsyscall ()
#1  0x01e46a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x009bbcfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x01b4ecc0 in wait (time=4294967295, this=0x89c8d60) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x89e5100, mutex=0x89c5b80, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x00af1406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x89e50e8, th=0x8be8a00) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x00af3ecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x89bb0e8, th=0x8be8a00) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x00af103a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x89e50e8, th=0x8be8a00) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x00af3fcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x89bb0e8, th=0x8be8a00) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x00af0f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x89e50e8, th=0x8be8a00, previous=0x93361b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x00af2b14 in ThreadWeaver::ThreadRunHelper::run (this=0xae3ff304, parent=0x89e50e8, th=0x8be8a00) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x00af2bca in ThreadWeaver::Thread::run (this=0x8be8a00) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x01b4e7b3 in QThreadPrivate::start (arg=0x8be8a00) at thread/qthread_unix.cpp:331
#13 0x01e42d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#14 0x009ae0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 4 (Thread 0xad015b70 (LWP 16442)):
#0  0x002d3416 in __kernel_vsyscall ()
#1  0x01e46a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x009bbcfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x01b4ecc0 in wait (time=4294967295, this=0x89c8d60) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x89e5100, mutex=0x89c5b80, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x00af1406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x89e50e8, th=0x8b50a68) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x00af3ecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x89bb0e8, th=0x8b50a68) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x00af103a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x89e50e8, th=0x8b50a68) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x00af3fcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x89bb0e8, th=0x8b50a68) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x00af0f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x89e50e8, th=0x8b50a68, previous=0x921ec80) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x00af2b14 in ThreadWeaver::ThreadRunHelper::run (this=0xad015304, parent=0x89e50e8, th=0x8b50a68) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x00af2bca in ThreadWeaver::Thread::run (this=0x8b50a68) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x01b4e7b3 in QThreadPrivate::start (arg=0x8b50a68) at thread/qthread_unix.cpp:331
#13 0x01e42d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#14 0x009ae0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xab24eb70 (LWP 16443)):
#0  0x002d3416 in __kernel_vsyscall ()
#1  0x01e46a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x009bbcfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x01b4ecc0 in wait (time=4294967295, this=0x89c8d60) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x89e5100, mutex=0x89c5b80, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x00af1406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x89e50e8, th=0x91a2160) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x00af3ecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x89bb0e8, th=0x91a2160) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x00af103a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x89e50e8, th=0x91a2160) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x00af3fcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x89bb0e8, th=0x91a2160) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x00af0f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x89e50e8, th=0x91a2160, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x00af3fe8 in ThreadWeaver::WorkingHardState::applyForWork (this=0x89bb0e8, th=0x91a2160) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#11 0x00af0f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x89e50e8, th=0x91a2160, previous=0x9234a78) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#12 0x00af2b14 in ThreadWeaver::ThreadRunHelper::run (this=0xab24e304, parent=0x89e50e8, th=0x91a2160) at ../../../threadweaver/Weaver/Thread.cpp:87
#13 0x00af2bca in ThreadWeaver::Thread::run (this=0x91a2160) at ../../../threadweaver/Weaver/Thread.cpp:142
#14 0x01b4e7b3 in QThreadPrivate::start (arg=0x91a2160) at thread/qthread_unix.cpp:331
#15 0x01e42d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#16 0x009ae0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xaaa4db70 (LWP 16444)):
#0  0x002d3416 in __kernel_vsyscall ()
#1  0x01e46a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x009bbcfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x01b4ecc0 in wait (time=4294967295, this=0x89c8d60) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x89e5100, mutex=0x89c5b80, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x00af1406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x89e50e8, th=0x8fe4cf8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x00af3ecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x89bb0e8, th=0x8fe4cf8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x00af103a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x89e50e8, th=0x8fe4cf8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x00af3fcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x89bb0e8, th=0x8fe4cf8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x00af0f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x89e50e8, th=0x8fe4cf8, previous=0xae408500) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x00af2b14 in ThreadWeaver::ThreadRunHelper::run (this=0xaaa4d304, parent=0x89e50e8, th=0x8fe4cf8) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x00af2bca in ThreadWeaver::Thread::run (this=0x8fe4cf8) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x01b4e7b3 in QThreadPrivate::start (arg=0x8fe4cf8) at thread/qthread_unix.cpp:331
#13 0x01e42d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#14 0x009ae0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb7816b20 (LWP 16268)):
[KCrash Handler]
#7  isNull (this=0x4068b800) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#8  operator! (this=0x4068b800) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#9  TaskManager::TaskItem::task (this=0x937e3a0) at ../../../libs/taskmanager/taskitem.cpp:113
#10 0x078ce590 in WindowTaskItem::publishIconGeometry (this=0x897c6e8, rect=...) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:130
#11 0x078e0b24 in TaskGroupItem::publishIconGeometry (this=0x8b498d8, rect=...) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1438
#12 0x078e0801 in publishIconGeometry (this=0x8b498d8) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1424
#13 TaskGroupItem::publishIconGeometry (this=0x8b498d8) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1416
#14 0x078df688 in AbstractTaskItem::timerEvent (this=0x8b498d8, event=0xbfa1631c) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#15 0x01c61994 in QObject::event (this=0x8b498d8, e=0xbfa1631c) at kernel/qobject.cpp:1181
#16 0x03052bd4 in QGraphicsWidget::event (this=0x8b498d8, event=0xbfa1631c) at graphicsview/qgraphicswidget.cpp:1455
#17 0x02993d54 in notify_helper (e=0xbfa1631c, receiver=0x8b498d8, this=0x8383eb0) at kernel/qapplication.cpp:4486
#18 QApplicationPrivate::notify_helper (this=0x8383eb0, receiver=0x8b498d8, e=0xbfa1631c) at kernel/qapplication.cpp:4458
#19 0x02999103 in QApplication::notify (this=0xbfa1631c, receiver=0x8b498d8, e=0xbfa1631c) at kernel/qapplication.cpp:3886
#20 0x00ee0681 in KApplication::notify (this=0x8372fd8, receiver=0x8b498d8, event=0xbfa1631c) at ../../kdeui/kernel/kapplication.cpp:311
#21 0x01c4919e in QCoreApplication::notifyInternal (this=0x8372fd8, receiver=0x8b498d8, event=0xbfa1631c) at kernel/qcoreapplication.cpp:787
#22 0x01c79c10 in sendEvent (event=0xbfa1631c, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#23 QTimerInfoList::activateTimers (this=0x8387ec4) at kernel/qeventdispatcher_unix.cpp:603
#24 0x01c77155 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#25 idleTimerSourceDispatch (source=0x8388300) at kernel/qeventdispatcher_glib.cpp:231
#26 0x04adb25f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#27 0x04adb990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#28 0x04adbc2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#29 0x01c77ada in QEventDispatcherGlib::processEvents (this=0x833a218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#30 0x02a4be3a in QGuiEventDispatcherGlib::processEvents (this=0x833a218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#31 0x01c481dd in QEventLoop::processEvents (this=0xbfa16594, flags=...) at kernel/qeventloop.cpp:149
#32 0x01c48421 in QEventLoop::exec (this=0xbfa16594, flags=...) at kernel/qeventloop.cpp:201
#33 0x01c4d19d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#34 0x029918f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#35 0x00cb018b in kdemain (argc=1, argv=0xbfa16794) at ../../../../plasma/desktop/shell/main.cpp:120
#36 0x0804850b in main (argc=1, argv=0xbfa16794) at plasma-desktop_dummy.cpp:3

This bug may be a duplicate of or related to bug 272495.

Possible duplicates by query: bug 290641, bug 290635, bug 290597, bug 290581, bug 290561.

Reported using DrKonqi