Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 2.6.40.6-0.fc15.x86_64 x86_64
Distribution (Platform): Fedora RPMs

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

An application with 6-8 windows open froze, and became totally unresponsive.  I killed the application, and immediately following this, the desktop crashed.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[KCrash Handler]
#6  operator== (value=0, this=0x281065000000c) at /usr/include/QtCore/qbasicatomic.h:70
#7  isNull (this=0x2800005) at /usr/include/QtCore/qsharedpointer_impl.h:568
#8  operator! (this=0x2800005) at /usr/include/QtCore/qsharedpointer_impl.h:574
#9  TaskManager::TaskItem::task (this=0x25e6dd0) at /usr/src/debug/kde-workspace-4.7.3/libs/taskmanager/taskitem.cpp:113
#10 0x00007f447239b192 in WindowTaskItem::publishIconGeometry (this=0x25e86a0) at /usr/src/debug/kde-workspace-4.7.3/plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#11 0x00007f44723a9afc in AbstractTaskItem::timerEvent (this=0x25e86a0, event=<optimized out>) at /usr/src/debug/kde-workspace-4.7.3/plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#12 0x00000036d6b708d9 in QObject::event (this=0x25e86a0, e=<optimized out>) at kernel/qobject.cpp:1181
#13 0x00000036d9dccd3b in QGraphicsWidget::event (this=0x25e86a0, event=0x7fff9f8c46e0) at graphicsview/qgraphicswidget.cpp:1455
#14 0x00000036d97b9324 in notify_helper (e=0x7fff9f8c46e0, receiver=0x25e86a0, this=0xdc2bc0) at kernel/qapplication.cpp:4481
#15 QApplicationPrivate::notify_helper (this=0xdc2bc0, receiver=0x25e86a0, e=0x7fff9f8c46e0) at kernel/qapplication.cpp:4453
#16 0x00000036d97be1b1 in QApplication::notify (this=0xda1b70, receiver=0x25e86a0, e=0x7fff9f8c46e0) at kernel/qapplication.cpp:4360
#17 0x0000003636e4d976 in KApplication::notify (this=0xda1b70, receiver=0x25e86a0, event=0x7fff9f8c46e0) at /usr/src/debug/kdelibs-4.7.3/kdeui/kernel/kapplication.cpp:311
#18 0x00000036d6b5a20c in QCoreApplication::notifyInternal (this=0xda1b70, receiver=0x25e86a0, event=0x7fff9f8c46e0) at kernel/qcoreapplication.cpp:787
#19 0x00000036d6b86c02 in sendEvent (event=0x7fff9f8c46e0, receiver=<optimized out>) at kernel/qcoreapplication.h:215
#20 QTimerInfoList::activateTimers (this=0xdc9130) at kernel/qeventdispatcher_unix.cpp:603
#21 0x00000036d6b84468 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#22 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#23 0x00000033d1a427ed in g_main_dispatch (context=0xdc8080) at gmain.c:2441
#24 g_main_context_dispatch (context=0xdc8080) at gmain.c:3014
#25 0x00000033d1a42fc8 in g_main_context_iterate (context=0xdc8080, block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3092
#26 0x00000033d1a4325c in g_main_context_iteration (context=0xdc8080, may_block=1) at gmain.c:3155
#27 0x00000036d6b84dcf in QEventDispatcherGlib::processEvents (this=0xd4a1d0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#28 0x00000036d985c12e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:207
#29 0x00000036d6b59722 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#30 0x00000036d6b5991f in QEventLoop::exec (this=0x7fff9f8c4970, flags=...) at kernel/qeventloop.cpp:201
#31 0x00000036d6b5da67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#32 0x000000363be41153 in kdemain (argc=1, argv=0x7fff9f8c4d58) at /usr/src/debug/kde-workspace-4.7.3/plasma/desktop/shell/main.cpp:120
#33 0x00000033cfe2139d in __libc_start_main (main=0x400850 <main(int, char**)>, argc=1, ubp_av=0x7fff9f8c4d58, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff9f8c4d48) at libc-start.c:226
#34 0x0000000000400881 in _start ()

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

Possible duplicates by query: bug 285913, bug 267077.

Reported using DrKonqi