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:

Right click on 3 or 4 stacked chromium windows, and click close to close all of the windows. This causes plasma to crash. On ubuntu 11.10.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7faf2d9867a0 (LWP 1533))]

Thread 4 (Thread 0x7faf0b0ca700 (LWP 1534)):
#0  0x00007faf2d259773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007faf217e3f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faf217e4429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faf2a44af3e in QEventDispatcherGlib::processEvents (this=0x2022c40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007faf2a41ecf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007faf2a41eef7 in QEventLoop::exec (this=0x7faf0b0c9db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007faf2a33627f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007faf2a401cbf in QInotifyFileSystemWatcherEngine::run (this=0x201ff70) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007faf2a338d05 in QThreadPrivate::start (arg=0x201ff70) at thread/qthread_unix.cpp:331
#9  0x00007faf222f0efc in start_thread (arg=0x7faf0b0ca700) at pthread_create.c:304
#10 0x00007faf2d26589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7faf03fff700 (LWP 1535)):
#0  0x00007faf2d259773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007faf217e3f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faf217e4429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faf2a44af3e in QEventDispatcherGlib::processEvents (this=0x16bad30, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007faf2a41ecf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007faf2a41eef7 in QEventLoop::exec (this=0x7faf03ffedb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007faf2a33627f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007faf2a401cbf in QInotifyFileSystemWatcherEngine::run (this=0x21b5e70) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007faf2a338d05 in QThreadPrivate::start (arg=0x21b5e70) at thread/qthread_unix.cpp:331
#9  0x00007faf222f0efc in start_thread (arg=0x7faf03fff700) at pthread_create.c:304
#10 0x00007faf2d26589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7faf013f4700 (LWP 1541)):
#0  0x00007faf2d259773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007faf217e3f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faf217e4792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faf01ed2516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007faf218092b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007faf222f0efc in start_thread (arg=0x7faf013f4700) at pthread_create.c:304
#6  0x00007faf2d26589d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7faf2d9867a0 (LWP 1533)):
[KCrash Handler]
#6  isNull (this=0x320000) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x320000) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x35a2260) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007faf13c2b112 in WindowTaskItem::publishIconGeometry (this=0x2de5a60) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007faf13c39b7c in AbstractTaskItem::timerEvent (this=0x2de5a60, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007faf2a436789 in QObject::event (this=0x2de5a60, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007faf29dee89b in QGraphicsWidget::event (this=0x2de5a60, event=0x7fff9ec7f630) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007faf297d0424 in notify_helper (e=0x7fff9ec7f630, receiver=0x2de5a60, this=0x1677100) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0x1677100, receiver=0x2de5a60, e=0x7fff9ec7f630) at kernel/qapplication.cpp:4458
#15 0x00007faf297d5291 in QApplication::notify (this=0x16686a0, receiver=0x2de5a60, e=0x7fff9ec7f630) at kernel/qapplication.cpp:4365
#16 0x00007faf2b0ce126 in KApplication::notify (this=0x16686a0, receiver=0x2de5a60, event=0x7fff9ec7f630) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007faf2a41fafc in QCoreApplication::notifyInternal (this=0x16686a0, receiver=0x2de5a60, event=0x7fff9ec7f630) at kernel/qcoreapplication.cpp:787
#18 0x00007faf2a44cd62 in sendEvent (event=0x7fff9ec7f630, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x167af00) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007faf2a44a514 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 0x00007faf217e3a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007faf217e4258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007faf217e4429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007faf2a44aed6 in QEventDispatcherGlib::processEvents (this=0x160cf40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#25 0x00007faf2987807e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#26 0x00007faf2a41ecf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#27 0x00007faf2a41eef7 in QEventLoop::exec (this=0x7fff9ec7f8c0, flags=...) at kernel/qeventloop.cpp:201
#28 0x00007faf2a423789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#29 0x00007faf2d5641a3 in kdemain (argc=1, argv=0x7fff9ec7fca8) at ../../../../plasma/desktop/shell/main.cpp:120
#30 0x00007faf2d1a530d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff9ec7fca8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff9ec7fc98) at libc-start.c:226
#31 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 290597.

Possible duplicates by query: bug 290597, bug 290581, bug 290561, bug 290559, bug 290538.

Reported using DrKonqi