Application: plasma-desktop (0.4)
KDE Platform Version: 4.8.5 (4.8.5)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-38-generic-pae i686
Distribution: Ubuntu 12.04.2 LTS

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

I added second panel and added widgets to it. After this I tried to remove same widgets from the default panel, and desktop crashed.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xafd44a40 (LWP 2317))]

Thread 5 (Thread 0xa7713b40 (LWP 2318)):
#0  0xb775f424 in __kernel_vsyscall ()
#1  0xb75f55f0 in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2b87a7b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2b7a0ae in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2b7a201 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb641d8e7 in QEventDispatcherGlib::processEvents (this=0xa6e00488, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0xb63e950d in QEventLoop::processEvents (this=0xa7713190, flags=...) at kernel/qeventloop.cpp:149
#7  0xb63e97a9 in QEventLoop::exec (this=0xa7713190, flags=...) at kernel/qeventloop.cpp:204
#8  0xb62d294c in QThread::exec (this=0x90f3910) at thread/qthread.cpp:501
#9  0xb63c6b5d in QInotifyFileSystemWatcherEngine::run (this=0x90f3910) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb62d5de0 in QThreadPrivate::start (arg=0x90f3910) at thread/qthread_unix.cpp:298
#11 0xb22bd101 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#12 0x5c8b0824 in ?? ()
#13 0xbab80424 in ?? ()
#14 0x65000000 in ?? ()
#15 0x001015ff in ?? ()
#16 0xd3890000 in ?? ()
#17 0xfff0013d in ?? ()
#18 0xc30173ff in ?? ()
#19 0x0fc3a2e8 in ?? ()
#20 0xafc18100 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 4 (Thread 0xa6dffb40 (LWP 2319)):
#0  0xb775f424 in __kernel_vsyscall ()
#1  0xb2c8e96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb761164c in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb3c4b029 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb3c4b06f in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb22bd101 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#6  0x5c8b0824 in ?? ()
#7  0xbab80424 in ?? ()
#8  0x65000000 in ?? ()
#9  0x001015ff in ?? ()
#10 0xd3890000 in ?? ()
#11 0xfff0013d in ?? ()
#12 0xc30173ff in ?? ()
#13 0x0fc3a2e8 in ?? ()
#14 0xafc18100 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 3 (Thread 0xa55ffb40 (LWP 2321)):
#0  0xa5f52d60 in g_cancellable_is_cancelled () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#1  0xa5f91ccd in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#2  0xb2b79872 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2b79faf in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2b7a56b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xa5ff91ba in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0xb2b9d6b3 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb22bd101 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#8  0x5c8b0824 in ?? ()
#9  0xbab80424 in ?? ()
#10 0x65000000 in ?? ()
#11 0x001015ff in ?? ()
#12 0xd3890000 in ?? ()
#13 0xfff0013d in ?? ()
#14 0xc30173ff in ?? ()
#15 0x0fc3a2e8 in ?? ()
#16 0xafc18100 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 2 (Thread 0xa3b2cb40 (LWP 2327)):
#0  0xb2c8cdc8 in pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
#1  0xb7611864 in pthread_mutex_lock () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2bb93d0 in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2b7987c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2b79faf in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb2b7a201 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb641d8e7 in QEventDispatcherGlib::processEvents (this=0xa3200488, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0xb63e950d in QEventLoop::processEvents (this=0xa3b2c190, flags=...) at kernel/qeventloop.cpp:149
#8  0xb63e97a9 in QEventLoop::exec (this=0xa3b2c190, flags=...) at kernel/qeventloop.cpp:204
#9  0xb62d294c in QThread::exec (this=0x951ab10) at thread/qthread.cpp:501
#10 0xb63c6b5d in QInotifyFileSystemWatcherEngine::run (this=0x951ab10) at io/qfilesystemwatcher_inotify.cpp:248
#11 0xb62d5de0 in QThreadPrivate::start (arg=0x951ab10) at thread/qthread_unix.cpp:298
#12 0xb22bd101 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#13 0x5c8b0824 in ?? ()
#14 0xbab80424 in ?? ()
#15 0x65000000 in ?? ()
#16 0x001015ff in ?? ()
#17 0xd3890000 in ?? ()
#18 0xfff0013d in ?? ()
#19 0xc30173ff in ?? ()
#20 0x0fc3a2e8 in ?? ()
#21 0xafc18100 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0xafd44a40 (LWP 2317)):
[KCrash Handler]
#7  0x00000000 in ?? ()
#8  0xb6402fb0 in QObject::connect (sender=0x936c268, signal=0xad444fa9 "2destroyed()", receiver=0x9519368, method=0xad444f98 "1widgetDeleted()", type=Qt::AutoConnection) at kernel/qobject.cpp:2551
#9  0xad422dab in SystemTray::Task::widget (this=0x9519368, host=0x8d02508, createIfNecessary=true) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:83
#10 0xad441709 in SystemTray::TaskArea::addWidgetForTask (this=0xacb65d0, task=0x9519368) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:265
#11 0xad441e9f in SystemTray::TaskArea::addTask (this=0xacb65d0, task=0x9519368) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#12 0xb64016b1 in QMetaObject::activate (sender=0x8cb9c80, m=0xad44eff8, local_signal_index=1, argv=0xbfc6e3e8) at kernel/qobject.cpp:3547
#13 0xad421e85 in SystemTray::Manager::taskChanged (this=0x8cb9c80, _t1=0x9519368) at ./manager.moc:120
#14 0xb64016b1 in QMetaObject::activate (sender=0x9519368, m=0xad44f0d0, local_signal_index=0, argv=0xbfc6e4c8) at kernel/qobject.cpp:3547
#15 0xad423465 in SystemTray::Task::changed (this=0x9519368, _t1=0x9519368) at ./task.moc:128
#16 0xad4234b3 in SystemTray::Task::emitChanged (this=0x9519368) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:144
#17 0xb63fcc01 in QMetaCallEvent::placeMetaCall (this=0x992fcf8, object=0x9519368) at kernel/qobject.cpp:525
#18 0xb6405c7b in QObject::event (this=0x9519368, e=0x992fcf8) at kernel/qobject.cpp:1195
#19 0xb58d5ed4 in notify_helper (e=0x992fcf8, receiver=0x9519368, this=0x8a62400) at kernel/qapplication.cpp:4559
#20 QApplicationPrivate::notify_helper (this=0x8a62400, receiver=0x9519368, e=0x992fcf8) at kernel/qapplication.cpp:4531
#21 0xb58db30d in QApplication::notify (this=0x992fcf8, receiver=0x9519368, e=0x992fcf8) at kernel/qapplication.cpp:4288
#22 0xb6a88e01 in KApplication::notify (this=0x8a33b50, receiver=0x9519368, event=0x992fcf8) at ../../kdeui/kernel/kapplication.cpp:311
#23 0xb63ea97e in QCoreApplication::notifyInternal (this=0x8a33b50, receiver=0x9519368, event=0x992fcf8) at kernel/qcoreapplication.cpp:876
#24 0xb63eead8 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#25 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x89ad130) at kernel/qcoreapplication.cpp:1500
#26 0xb63eee0c in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1393
#27 0xb641d494 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#28 postEventSourceDispatch (s=0x8a63780) at kernel/qeventdispatcher_glib.cpp:279
#29 0xb2b79d86 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#30 0xb2b7a125 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#31 0xb2b7a201 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#32 0xb641d887 in QEventDispatcherGlib::processEvents (this=0x89adea0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#33 0xb598eaaa in QGuiEventDispatcherGlib::processEvents (this=0x89adea0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#34 0xb63e950d in QEventLoop::processEvents (this=0xbfc6ec44, flags=...) at kernel/qeventloop.cpp:149
#35 0xb63e97a9 in QEventLoop::exec (this=0xbfc6ec44, flags=...) at kernel/qeventloop.cpp:204
#36 0xb63eeeba in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#37 0xb58d3a74 in QApplication::exec () at kernel/qapplication.cpp:3820
#38 0xb7713a7b in kdemain (argc=1, argv=0xbfc6ee44) at ../../../../plasma/desktop/shell/main.cpp:120
#39 0x0804850b in main (argc=1, argv=0xbfc6ee44) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 313952, bug 313400, bug 313045, bug 311163, bug 310838.

Reported using DrKonqi