Bug 291298

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 x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
Moved cursor to the top of the screen in order to show a 2nd toolbar I made which autohides

- Unusual behavior I noticed:
Plamsa toolbars would randomly become unresponsive.  I think due to search indexing hitting large files sometimes.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f489ff757a0 (LWP 2555))]

Thread 3 (Thread 0x7f486d9e8700 (LWP 2574)):
#0  0x00007f489f864773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f4893deef68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4893def429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f489ca55f3e in QEventDispatcherGlib::processEvents (this=0x320d5c0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f489ca29cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f489ca29ef7 in QEventLoop::exec (this=0x7f486d9e7db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f489c94127f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f489ca0ccbf in QInotifyFileSystemWatcherEngine::run (this=0x320caf0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f489c943d05 in QThreadPrivate::start (arg=0x320caf0) at thread/qthread_unix.cpp:331
#9  0x00007f48948fbefc in start_thread (arg=0x7f486d9e8700) at pthread_create.c:304
#10 0x00007f489f87089d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f4866cbd700 (LWP 2584)):
#0  0x00007f489f864773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f4893deef68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4893def429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f489ca55f3e in QEventDispatcherGlib::processEvents (this=0x3947aa0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f489ca29cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f489ca29ef7 in QEventLoop::exec (this=0x7f4866cbcdb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f489c94127f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f489ca0ccbf in QInotifyFileSystemWatcherEngine::run (this=0x3939280) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f489c943d05 in QThreadPrivate::start (arg=0x3939280) at thread/qthread_unix.cpp:331
#9  0x00007f48948fbefc in start_thread (arg=0x7f4866cbd700) at pthread_create.c:304
#10 0x00007f489f87089d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f489ff757a0 (LWP 2555)):
[KCrash Handler]
#6  isNull (this=0x0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x52b8d40) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007f4878464112 in WindowTaskItem::publishIconGeometry (this=0x33d9f50) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007f4878472b7c in AbstractTaskItem::timerEvent (this=0x33d9f50, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007f489ca41789 in QObject::event (this=0x33d9f50, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007f489c3f989b in QGraphicsWidget::event (this=0x33d9f50, event=0x7fff885349c0) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007f489bddb424 in notify_helper (e=0x7fff885349c0, receiver=0x33d9f50, this=0x22e3370) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0x22e3370, receiver=0x33d9f50, e=0x7fff885349c0) at kernel/qapplication.cpp:4458
#15 0x00007f489bde0291 in QApplication::notify (this=0x22d52c0, receiver=0x33d9f50, e=0x7fff885349c0) at kernel/qapplication.cpp:4365
#16 0x00007f489d6d9126 in KApplication::notify (this=0x22d52c0, receiver=0x33d9f50, event=0x7fff885349c0) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007f489ca2aafc in QCoreApplication::notifyInternal (this=0x22d52c0, receiver=0x33d9f50, event=0x7fff885349c0) at kernel/qcoreapplication.cpp:787
#18 0x00007f489ca57d62 in sendEvent (event=0x7fff885349c0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x22e5dd0) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007f489ca55538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007f4893deea5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f4893def258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f4893def429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f489ca55ed6 in QEventDispatcherGlib::processEvents (this=0x2274f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007f489be8307e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007f489ca29cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f489ca29ef7 in QEventLoop::exec (this=0x7fff88534c50, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007f489ca2e789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007f489fb6f1a3 in kdemain (argc=1, argv=0x7fff88535038) at ../../../../plasma/desktop/shell/main.cpp:120
#31 0x00007f489f7b030d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff88535038, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff88535028) at libc-start.c:226
#32 0x0000000000400671 in _start ()

Possible duplicates by query: bug 291295, bug 291285, bug 291257, bug 291255, bug 291241.

Reported using DrKonqi