Bug 291246

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3) (Compiled from sources)
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:  I removed the konquer web browser from the main panel at the bottom. 

- Unusual behavior I noticed: I then went to the top configure the search and Launch Bar where I have the Firefox web browser that I normally use and attempted to add to the default panel and the system did a bug crash report.  I attempted to redo it again just now and the screen went blank  but came back without crashing again.  	

- Custom settings of the application: Unkown.  but the Firefox web Browser will not locate or duplicate to the main bottom panel.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb76e3b20 (LWP 1966))]

Thread 5 (Thread 0xb171eb70 (LWP 1967)):
#0  0x0034140e in __GI___poll (fds=0xb0e01310, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x0128934b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0x0127a896 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x0127ac2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x016d9b37 in QEventDispatcherGlib::processEvents (this=0xa66a6a8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x016aa1dd in QEventLoop::processEvents (this=0xb171e2a0, flags=...) at kernel/qeventloop.cpp:149
#6  0x016aa421 in QEventLoop::exec (this=0xb171e2a0, flags=...) at kernel/qeventloop.cpp:201
#7  0x015ad90b in QThread::exec (this=0xa668df0) at thread/qthread.cpp:498
#8  0x0168ae2d in QInotifyFileSystemWatcherEngine::run (this=0xa668df0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x015b07b3 in QThreadPrivate::start (arg=0xa668df0) at thread/qthread_unix.cpp:331
#10 0x01222d31 in start_thread (arg=0xb171eb70) at pthread_create.c:304
#11 0x003500ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 4 (Thread 0xaf63eb70 (LWP 1970)):
#0  0x01225d50 in __pthread_mutex_unlock_usercnt (mutex=0xb0e0176c, decr=1) at pthread_mutex_unlock.c:77
#1  0x0035df54 in pthread_mutex_unlock (mutex=0xb0e0176c) at forward.c:184
#2  0x0127a877 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x0127ac2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x016d9b37 in QEventDispatcherGlib::processEvents (this=0xaa8a550, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x016aa1dd in QEventLoop::processEvents (this=0xaf63e2a0, flags=...) at kernel/qeventloop.cpp:149
#6  0x016aa421 in QEventLoop::exec (this=0xaf63e2a0, flags=...) at kernel/qeventloop.cpp:201
#7  0x015ad90b in QThread::exec (this=0xa2fb060) at thread/qthread.cpp:498
#8  0x0168ae2d in QInotifyFileSystemWatcherEngine::run (this=0xa2fb060) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x015b07b3 in QThreadPrivate::start (arg=0xa2fb060) at thread/qthread_unix.cpp:331
#10 0x01222d31 in start_thread (arg=0xaf63eb70) at pthread_create.c:304
#11 0x003500ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xade3bb70 (LWP 1979)):
#0  0x012799bb in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0x0127a637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0x0127af9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x0479dcea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#4  0x012a15f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x01222d31 in start_thread (arg=0xade3bb70) at pthread_create.c:304
#6  0x003500ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xad0a3b70 (LWP 2619)):
#0  0x00568416 in __kernel_vsyscall ()
#1  0x01226a5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x0035dcfc in __pthread_cond_wait (cond=0x7553a50, mutex=0x7553a38) at forward.c:139
#3  0x0744e9a9 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0x0744e9ef in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0x01222d31 in start_thread (arg=0xad0a3b70) at pthread_create.c:304
#6  0x003500ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb76e3b20 (LWP 1966)):
[KCrash Handler]
#7  0x08e1c154 in QGraphicsLayoutItem::graphicsItem (this=0x3c) at graphicsview/qgraphicslayoutitem.cpp:920
#8  0x08e1c225 in QGraphicsLayoutItemPrivate::hasHeightForWidth (this=0xb96c510) at graphicsview/qgraphicslayoutitem.cpp:286
#9  0x08e68458 in QGridLayoutItem::hasDynamicConstraint (this=0xb8e3fb0) at graphicsview/qgridlayoutengine.cpp:576
#10 0x08e6944e in ensureDynamicConstraint (this=0xb9108b0) at graphicsview/qgridlayoutengine.cpp:1657
#11 QGridLayoutEngine::ensureDynamicConstraint (this=0xb9108b0) at graphicsview/qgridlayoutengine.cpp:1652
#12 0x08e694f0 in QGridLayoutEngine::hasDynamicConstraint (this=0xb9108b0) at graphicsview/qgridlayoutengine.cpp:1677
#13 0x08e6d942 in QGridLayoutEngine::sizeHint (this=0xb9108b0, styleInfo=..., which=Qt::MaximumSize, constraint=...) at graphicsview/qgridlayoutengine.cpp:1134
#14 0x08dee42f in QGraphicsGridLayout::sizeHint (this=0xb90d4e0, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicsgridlayout.cpp:656
#15 0x08e1b365 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0xb9107c0, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#16 0x08e1bd54 in effectiveSizeHint (constraint=..., which=Qt::MinimumSize, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#17 QGraphicsLayoutItem::effectiveSizeHint (this=0xb90d4e0, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:810
#18 0x08e5e39c in QGraphicsWidget::sizeHint (this=0xb8ddd98, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicswidget.cpp:743
#19 0x08e1b417 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0xb9106c8, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#20 0x08e1bd54 in effectiveSizeHint (constraint=..., which=Qt::PreferredSize, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#21 QGraphicsLayoutItem::effectiveSizeHint (this=0xb8ddda8, which=Qt::PreferredSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:810
#22 0x03942331 in SystemTray::TaskArea::adjustHiddentTasksWidget (this=0xb8de408) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:452
#23 0x03944339 in SystemTray::TaskArea::addWidgetForTask (this=0xb8de408, task=0xaca7138) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:320
#24 0x039446df in SystemTray::TaskArea::addTask (this=0xb8de408, task=0xaca7138) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#25 0x03944d8d in SystemTray::TaskArea::qt_metacall (this=0xb8de408, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbfd43228) at ./taskarea.moc:89
#26 0x016b1b7d in metacall (argv=0xbfd43228, idx=23, cl=QMetaObject::InvokeMetaMethod, object=0xb8de408) at kernel/qmetaobject.cpp:237
#27 QMetaObject::metacall (object=0xb8de408, cl=QMetaObject::InvokeMetaMethod, idx=23, argv=0xbfd43228) at kernel/qmetaobject.cpp:232
#28 0x016c0a6a in QMetaObject::activate (sender=0xa12bd98, m=0x3951038, local_signal_index=0, argv=0xbfd43228) at kernel/qobject.cpp:3278
#29 0x03923e85 in SystemTray::Manager::taskAdded (this=0xa12bd98, _t1=0xaca7138) at ./manager.moc:99
#30 0x03924128 in SystemTray::Manager::addTask (this=0xa12bd98, task=0xaca7138) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:87
#31 0x039242cd in SystemTray::Manager::qt_metacall (this=0xa12bd98, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbfd433a8) at ./manager.moc:86
#32 0x016b1b7d in metacall (argv=0xbfd433a8, idx=7, cl=QMetaObject::InvokeMetaMethod, object=0xa12bd98) at kernel/qmetaobject.cpp:237
#33 QMetaObject::metacall (object=0xa12bd98, cl=QMetaObject::InvokeMetaMethod, idx=7, argv=0xbfd433a8) at kernel/qmetaobject.cpp:232
#34 0x016c0a6a in QMetaObject::activate (sender=0xa14d500, m=0x395109c, local_signal_index=0, argv=0xbfd433a8) at kernel/qobject.cpp:3278
#35 0x03924875 in SystemTray::Protocol::taskCreated (this=0xa14d500, _t1=0xaca7138) at ./protocol.moc:91
#36 0x0392c816 in SystemTray::PlasmoidProtocol::addApplet (this=0xa14d500, appletName=..., id=0, parent=0xb908ac8) at ../../../../../plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtaskprotocol.cpp:112
#37 0x03923c29 in SystemTray::Manager::addApplet (this=0xa12bd98, appletName=..., parent=0xb908ac8) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:110
#38 0x039384fb in SystemTray::Applet::checkDefaultApplets (this=0xb908ac8) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:737
#39 0x039396ac in SystemTray::Applet::qt_metacall (this=0xb908ac8, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xb8b7780) at ./applet.moc:91
#40 0x016b1b7d in metacall (argv=0xb8b7780, idx=83, cl=QMetaObject::InvokeMetaMethod, object=0xb908ac8) at kernel/qmetaobject.cpp:237
#41 QMetaObject::metacall (object=0xb908ac8, cl=QMetaObject::InvokeMetaMethod, idx=83, argv=0xb8b7780) at kernel/qmetaobject.cpp:232
#42 0x016bc685 in QMetaCallEvent::placeMetaCall (this=0xb8b71d0, object=0xb908ac8) at kernel/qobject.cpp:535
#43 0x016c3b52 in QObject::event (this=0xb908ac8, e=0xb8b71d0) at kernel/qobject.cpp:1217
#44 0x08e5ebd4 in QGraphicsWidget::event (this=0xb908ac8, event=0xb8b71d0) at graphicsview/qgraphicswidget.cpp:1455
#45 0x0879fd54 in notify_helper (e=0xb8b71d0, receiver=0xb908ac8, this=0x9f131a0) at kernel/qapplication.cpp:4486
#46 QApplicationPrivate::notify_helper (this=0x9f131a0, receiver=0xb908ac8, e=0xb8b71d0) at kernel/qapplication.cpp:4458
#47 0x087a5103 in QApplication::notify (this=0xb8b71d0, receiver=0xb908ac8, e=0xb8b71d0) at kernel/qapplication.cpp:3886
#48 0x05bb4681 in KApplication::notify (this=0x9f0a600, receiver=0xb908ac8, event=0xb8b71d0) at ../../kdeui/kernel/kapplication.cpp:311
#49 0x016ab19e in QCoreApplication::notifyInternal (this=0x9f0a600, receiver=0xb908ac8, event=0xb8b71d0) at kernel/qcoreapplication.cpp:787
#50 0x016aef93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#51 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9ec32e0) at kernel/qcoreapplication.cpp:1428
#52 0x016af0ec in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1321
#53 0x016d96a4 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#54 postEventSourceDispatch (s=0x9f13718) at kernel/qeventdispatcher_glib.cpp:277
#55 0x0127a25f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#56 0x0127a990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#57 0x0127ac2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#58 0x016d9ada in QEventDispatcherGlib::processEvents (this=0x9ec4218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#59 0x08857e3a in QGuiEventDispatcherGlib::processEvents (this=0x9ec4218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#60 0x016aa1dd in QEventLoop::processEvents (this=0xbfd43c54, flags=...) at kernel/qeventloop.cpp:149
#61 0x016aa421 in QEventLoop::exec (this=0xbfd43c54, flags=...) at kernel/qeventloop.cpp:201
#62 0x016af19d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#63 0x0879d8f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#64 0x00ad018b in kdemain (argc=1, argv=0xbfd43e54) at ../../../../plasma/desktop/shell/main.cpp:120
#65 0x0804850b in main (argc=1, argv=0xbfd43e54) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 290919, bug 290092, bug 289670, bug 289155, bug 288137.

Reported using DrKonqi