Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3) "release 10"
Qt Version: 4.7.4
Operating System: Linux 3.1.0-1.2-desktop x86_64
Distribution: "openSUSE 12.1 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
merging a tab into Firefox window.

This crash is happening on random window manipulation situations- resizing, switching, closing, etc...

-- Backtrace:
Application: Plasma Desktop Shell (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fb097772760 (LWP 2192))]

Thread 2 (Thread 0x7fb07acc8700 (LWP 2216)):
#0  0x00007fb094deb423 in poll () from /lib64/libc.so.6
#1  0x00007fb091be0a98 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fb091be0f59 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fb0963fd576 in QEventDispatcherGlib::processEvents (this=0x7fb06c0008c0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fb0963d1a22 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fb0963d1c1f in QEventLoop::exec (this=0x7fb07acc7df0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fb0962e95df in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007fb0963b4aef in QInotifyFileSystemWatcherEngine::run (this=0xe27b30) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fb0962ec025 in QThreadPrivate::start (arg=0xe27b30) at thread/qthread_unix.cpp:331
#9  0x00007fb09605bf05 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fb094df453d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fb097772760 (LWP 2192)):
[KCrash Handler]
#6  isNull (this=0x5f2820) at /usr/include/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x5f2820) at /usr/include/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x144f890) at /usr/src/debug/kde-workspace-4.7.3/libs/taskmanager/taskitem.cpp:113
#9  0x00007fb07cc1d2e2 in WindowTaskItem::publishIconGeometry (this=0x1ab2180) at /usr/src/debug/kde-workspace-4.7.3/plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007fb07cc2bcac in AbstractTaskItem::timerEvent (this=0x1ab2180, event=<optimized out>) at /usr/src/debug/kde-workspace-4.7.3/plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007fb0963e8e79 in QObject::event (this=0x1ab2180, e=<optimized out>) at kernel/qobject.cpp:1190
#12 0x00007fb095b9e27b in QGraphicsWidget::event (this=0x1ab2180, event=0x7fff18da0880) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007fb095584be4 in notify_helper (e=0x7fff18da0880, receiver=0x1ab2180, this=0x6e2130) at kernel/qapplication.cpp:4481
#14 QApplicationPrivate::notify_helper (this=0x6e2130, receiver=0x1ab2180, e=0x7fff18da0880) at kernel/qapplication.cpp:4453
#15 0x00007fb095589a71 in QApplication::notify (this=0x6db8e0, receiver=0x1ab2180, e=0x7fff18da0880) at kernel/qapplication.cpp:4360
#16 0x00007fb097164e36 in KApplication::notify (this=0x6db8e0, receiver=0x1ab2180, event=0x7fff18da0880) at /usr/src/debug/kdelibs-4.7.3/kdeui/kernel/kapplication.cpp:311
#17 0x00007fb0963d281c in QCoreApplication::notifyInternal (this=0x6db8e0, receiver=0x1ab2180, event=0x7fff18da0880) at kernel/qcoreapplication.cpp:787
#18 0x00007fb0963ff398 in sendEvent (event=0x7fff18da0880, receiver=<optimized out>) at kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x6e9b00) at kernel/qeventdispatcher_unix.cpp:618
#20 0x00007fb0963fcba8 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007fb091be058d in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#23 0x00007fb091be0d88 in ?? () from /usr/lib64/libglib-2.0.so.0
#24 0x00007fb091be0f59 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#25 0x00007fb0963fd50f in QEventDispatcherGlib::processEvents (this=0x6553a0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007fb095627f2e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007fb0963d1a22 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007fb0963d1c1f in QEventLoop::exec (this=0x7fff18da0b80, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007fb0963d5de7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007fb084e60773 in kdemain (argc=1, argv=0x658440) at /usr/src/debug/kde-workspace-4.7.3/plasma/desktop/shell/main.cpp:120
#31 0x0000000000408897 in _start ()

Possible duplicates by query: bug 288468, bug 288438, bug 288430, bug 288383, bug 288343.

Reported using DrKonqi