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:
- Unusual behavior I noticed: after a crash of Kmail2, a second crash occured : plasma without peticular actions from me ...

The crash can be reproduced every time.

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb061d720 (LWP 1875))]

Thread 8 (Thread 0xa9720b70 (LWP 1876)):
#0  0xb3053d10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0xb643f7d5 in do_gettime (frac=0xa971ff60, sec=0xa971ff58) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0xb65124b6 in QTimerInfoList::updateCurrentTime (this=0x9582e7c) at kernel/qeventdispatcher_unix.cpp:339
#4  0xb651280a in QTimerInfoList::timerWait (this=0x9582e7c, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0xb6511053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa972006c) at kernel/qeventdispatcher_glib.cpp:136
#6  0xb65110ed in timerSourcePrepare (source=0x9582e48, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0xb2f9888c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb2f99637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb2f99c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb6511b37 in QEventDispatcherGlib::processEvents (this=0x95820f0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0xb64e21dd in QEventLoop::processEvents (this=0xa97201f0, flags=...) at kernel/qeventloop.cpp:149
#12 0xb64e2421 in QEventLoop::exec (this=0xa97201f0, flags=...) at kernel/qeventloop.cpp:201
#13 0xb63e590b in QThread::exec (this=0x9580900) at thread/qthread.cpp:498
#14 0xb64c2e2d in QInotifyFileSystemWatcherEngine::run (this=0x9580900) at io/qfilesystemwatcher_inotify.cpp:248
#15 0xb63e87b3 in QThreadPrivate::start (arg=0x9580900) at thread/qthread_unix.cpp:331
#16 0xb27039cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#17 0xb76c60ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 7 (Thread 0xa7c4ab70 (LWP 1877)):
#0  0xb76d3ee0 in pthread_mutex_lock () from /lib/i386-linux-gnu/libc.so.6
#1  0xb2f99839 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb2f99c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb6511b37 in QEventDispatcherGlib::processEvents (this=0x96b7ae8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0xb64e21dd in QEventLoop::processEvents (this=0xa7c4a1f0, flags=...) at kernel/qeventloop.cpp:149
#5  0xb64e2421 in QEventLoop::exec (this=0xa7c4a1f0, flags=...) at kernel/qeventloop.cpp:201
#6  0xb63e590b in QThread::exec (this=0x91a2260) at thread/qthread.cpp:498
#7  0xb64c2e2d in QInotifyFileSystemWatcherEngine::run (this=0x91a2260) at io/qfilesystemwatcher_inotify.cpp:248
#8  0xb63e87b3 in QThreadPrivate::start (arg=0x91a2260) at thread/qthread_unix.cpp:331
#9  0xb27039cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0xb76c60ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 6 (Thread 0xa5601b70 (LWP 1885)):
#0  0xb2fc16ac in g_thread_self () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb2f97ea7 in g_main_context_acquire () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb2f9956d in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2f99f9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xa5ee1cea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#5  0xb2fc05f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb27039cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#7  0xb76c60ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 5 (Thread 0xa4644b70 (LWP 2337)):
#0  0xb780b424 in __kernel_vsyscall ()
#1  0xb30b7a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb76d3cfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb63e8cc0 in wait (time=4294967295, this=0x95e72e0) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x95e70f8, mutex=0x95a8e18, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0xb3887406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x95e70e0, th=0x958f6f0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0xb3889ecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x95a95a8, th=0x958f6f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0xb388703a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x95e70e0, th=0x958f6f0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0xb3889fcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x95a95a8, th=0x958f6f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0xb3886f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x95e70e0, th=0x958f6f0, previous=0xa8e088f0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0xb3888b14 in ThreadWeaver::ThreadRunHelper::run (this=0xa4644254, parent=0x95e70e0, th=0x958f6f0) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0xb3888bca in ThreadWeaver::Thread::run (this=0x958f6f0) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0xb63e87b3 in QThreadPrivate::start (arg=0x958f6f0) at thread/qthread_unix.cpp:331
#13 0xb27039cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#14 0xb76c60ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 4 (Thread 0xa67a9b70 (LWP 2338)):
#0  0xb780b424 in __kernel_vsyscall ()
#1  0xb30b7a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb76d3cfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb63e8cc0 in wait (time=4294967295, this=0x95e72e0) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x95e70f8, mutex=0x95a8e18, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0xb3887406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x95e70e0, th=0xa8e00b00) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0xb3889ecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x95a95a8, th=0xa8e00b00) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0xb388703a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x95e70e0, th=0xa8e00b00) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0xb3889fcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x95a95a8, th=0xa8e00b00) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0xb3886f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x95e70e0, th=0xa8e00b00, previous=0x9565b30) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0xb3888b14 in ThreadWeaver::ThreadRunHelper::run (this=0xa67a9254, parent=0x95e70e0, th=0xa8e00b00) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0xb3888bca in ThreadWeaver::Thread::run (this=0xa8e00b00) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0xb63e87b3 in QThreadPrivate::start (arg=0xa8e00b00) at thread/qthread_unix.cpp:331
#13 0xb27039cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#14 0xb76c60ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xa5e02b70 (LWP 2339)):
#0  0xb780b424 in __kernel_vsyscall ()
#1  0xb30b7a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb76d3cfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb63e8cc0 in wait (time=4294967295, this=0x95e72e0) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x95e70f8, mutex=0x95a8e18, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0xb3887406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x95e70e0, th=0x99773d0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0xb3889ecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x95a95a8, th=0x99773d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0xb388703a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x95e70e0, th=0x99773d0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0xb3889fcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x95a95a8, th=0x99773d0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0xb3886f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x95e70e0, th=0x99773d0, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0xb3888b14 in ThreadWeaver::ThreadRunHelper::run (this=0xa5e02254, parent=0x95e70e0, th=0x99773d0) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0xb3888bca in ThreadWeaver::Thread::run (this=0x99773d0) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0xb63e87b3 in QThreadPrivate::start (arg=0x99773d0) at thread/qthread_unix.cpp:331
#13 0xb27039cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#14 0xb76c60ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xa26aab70 (LWP 2340)):
#0  0xb780b424 in __kernel_vsyscall ()
#1  0xb30b7a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb76d3cfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb63e8cc0 in wait (time=4294967295, this=0x95e72e0) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x95e70f8, mutex=0x95a8e18, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0xb3887406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x95e70e0, th=0x998dde0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0xb3889ecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x95a95a8, th=0x998dde0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0xb388703a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x95e70e0, th=0x998dde0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0xb3889fcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x95a95a8, th=0x998dde0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0xb3886f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x95e70e0, th=0x998dde0, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0xb3889fe8 in ThreadWeaver::WorkingHardState::applyForWork (this=0x95a95a8, th=0x998dde0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#11 0xb3886f93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x95e70e0, th=0x998dde0, previous=0x9d74440) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#12 0xb3888b14 in ThreadWeaver::ThreadRunHelper::run (this=0xa26aa254, parent=0x95e70e0, th=0x998dde0) at ../../../threadweaver/Weaver/Thread.cpp:87
#13 0xb3888bca in ThreadWeaver::Thread::run (this=0x998dde0) at ../../../threadweaver/Weaver/Thread.cpp:142
#14 0xb63e87b3 in QThreadPrivate::start (arg=0x998dde0) at thread/qthread_unix.cpp:331
#15 0xb27039cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#16 0xb76c60ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb061d720 (LWP 1875)):
[KCrash Handler]
#7  operator== (value=0, this=0x9) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#8  isNull (this=0xa1212c0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#9  operator! (this=0xa1212c0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#10 TaskManager::TaskItem::task (this=0x97a36f0) at ../../../libs/taskmanager/taskitem.cpp:113
#11 0xaeefc662 in WindowTaskItem::publishIconGeometry (this=0x9d683b0) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#12 0xaef0d688 in AbstractTaskItem::timerEvent (this=0x9d683b0, event=0xbfc706ac) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#13 0xb64fb994 in QObject::event (this=0x9d683b0, e=0xbfc706ac) at kernel/qobject.cpp:1181
#14 0xb60cdbd4 in QGraphicsWidget::event (this=0x9d683b0, event=0xbfc706ac) at graphicsview/qgraphicswidget.cpp:1455
#15 0xb5a0ed54 in notify_helper (e=0xbfc706ac, receiver=0x9d683b0, this=0x8fc30b0) at kernel/qapplication.cpp:4486
#16 QApplicationPrivate::notify_helper (this=0x8fc30b0, receiver=0x9d683b0, e=0xbfc706ac) at kernel/qapplication.cpp:4458
#17 0xb5a14103 in QApplication::notify (this=0xbfc706ac, receiver=0x9d683b0, e=0xbfc706ac) at kernel/qapplication.cpp:3886
#18 0xb6b48681 in KApplication::notify (this=0x8fafe78, receiver=0x9d683b0, event=0xbfc706ac) at ../../kdeui/kernel/kapplication.cpp:311
#19 0xb64e319e in QCoreApplication::notifyInternal (this=0x8fafe78, receiver=0x9d683b0, event=0xbfc706ac) at kernel/qcoreapplication.cpp:787
#20 0xb6513c10 in sendEvent (event=0xbfc706ac, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#21 QTimerInfoList::activateTimers (this=0x8fc66c4) at kernel/qeventdispatcher_unix.cpp:603
#22 0xb6511155 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#23 idleTimerSourceDispatch (source=0x8fc66f8) at kernel/qeventdispatcher_glib.cpp:231
#24 0xb2f9925f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#25 0xb2f99990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#26 0xb2f99c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#27 0xb6511b37 in QEventDispatcherGlib::processEvents (this=0x8f2d230, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#28 0xb5ac6e3a in QGuiEventDispatcherGlib::processEvents (this=0x8f2d230, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#29 0xb64e21dd in QEventLoop::processEvents (this=0xbfc70924, flags=...) at kernel/qeventloop.cpp:149
#30 0xb64e2421 in QEventLoop::exec (this=0xbfc70924, flags=...) at kernel/qeventloop.cpp:201
#31 0xb64e719d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#32 0xb5a0c8f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#33 0xb77c018b in kdemain (argc=1, argv=0xbfc70b24) at ../../../../plasma/desktop/shell/main.cpp:120
#34 0x0804850b in main (argc=1, argv=0xbfc70b24) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 291257, bug 291187, bug 291127, bug 290995, bug 290813.

Reported using DrKonqi