Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-13-generic x86_64
Distribution: Ubuntu 11.10

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

Just shuting down. Nepomuk indexing was running in backward

The crash can be reproduced some of the time.

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f028b7fe7a0 (LWP 1840))]

Thread 3 (Thread 0x7f026d503700 (LWP 1843)):
#0  __libc_enable_asynccancel () at ../nptl/sysdeps/unix/sysv/linux/x86_64/cancellation.S:66
#1  0x00007f028b0d5758 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:85
#2  0x00007f027f660f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f027f661429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f02882c7f3e in QEventDispatcherGlib::processEvents (this=0x7f0268000980, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f028829bcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f028829bef7 in QEventLoop::exec (this=0x7f026d502db0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f02881b327f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007f028827ecbf in QInotifyFileSystemWatcherEngine::run (this=0x1bf0530) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f02881b5d05 in QThreadPrivate::start (arg=0x1bf0530) at thread/qthread_unix.cpp:331
#10 0x00007f028016defc in start_thread (arg=0x7f026d503700) at pthread_create.c:304
#11 0x00007f028b0e189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f026199f700 (LWP 1844)):
#0  0x00007f028b0d5773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f027f660f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f027f661429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f02882c7f3e in QEventDispatcherGlib::processEvents (this=0x1d00ec0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f028829bcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f028829bef7 in QEventLoop::exec (this=0x7f026199edb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f02881b327f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f028827ecbf in QInotifyFileSystemWatcherEngine::run (this=0x1d00400) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f02881b5d05 in QThreadPrivate::start (arg=0x1d00400) at thread/qthread_unix.cpp:331
#9  0x00007f028016defc in start_thread (arg=0x7f026199f700) at pthread_create.c:304
#10 0x00007f028b0e189d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f028b7fe7a0 (LWP 1840)):
[KCrash Handler]
#6  0x00000000050049a8 in ?? ()
#7  0x00007f02706c9b96 in TaskGroupItem::~TaskGroupItem (this=0x2128ad0, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#8  0x00007f02706c9c49 in TaskGroupItem::~TaskGroupItem (this=0x2128ad0, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:83
#9  0x00007f02882b3a88 in QObject::event (this=0x2128ad0, e=<optimized out>) at kernel/qobject.cpp:1200
#10 0x00007f0287c6b89b in QGraphicsWidget::event (this=0x2128ad0, event=0x286c060) at graphicsview/qgraphicswidget.cpp:1455
#11 0x00007f028764d424 in notify_helper (e=0x286c060, receiver=0x2128ad0, this=0xe275e0) at kernel/qapplication.cpp:4486
#12 QApplicationPrivate::notify_helper (this=0xe275e0, receiver=0x2128ad0, e=0x286c060) at kernel/qapplication.cpp:4458
#13 0x00007f0287652291 in QApplication::notify (this=0xe14fc0, receiver=0x2128ad0, e=0x286c060) at kernel/qapplication.cpp:4365
#14 0x00007f0288f4b126 in KApplication::notify (this=0xe14fc0, receiver=0x2128ad0, event=0x286c060) at ../../kdeui/kernel/kapplication.cpp:311
#15 0x00007f028829cafc in QCoreApplication::notifyInternal (this=0xe14fc0, receiver=0x2128ad0, event=0x286c060) at kernel/qcoreapplication.cpp:787
#16 0x00007f02882a051f in sendEvent (event=0x286c060, receiver=0x2128ad0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#17 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0xda1430) at kernel/qcoreapplication.cpp:1428
#18 0x00007f02882a07c4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1071
#19 0x00007f028b3e01a3 in kdemain (argc=1, argv=0x7fff9ca85938) at ../../../../plasma/desktop/shell/main.cpp:120
#20 0x00007f028b02130d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff9ca85938, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff9ca85928) at libc-start.c:226
#21 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 286027.

Possible duplicates by query: bug 286027, bug 285724, bug 285717, bug 285715, bug 285707.

Reported using DrKonqi