Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-15-server x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
I shutdown the machine, and return this error.


- Unusual behavior I noticed:
I have one usb disk Samsung 2TB usb attached

The crash can be reproduced some of the time.

-- Backtrace:
Application: Shell da área de trabalho do Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f1a534937a0 (LWP 2128))]

Thread 4 (Thread 0x7f1a30b1b700 (LWP 2129)):
#0  0x00007f1a52d70773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f1a472faf68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1a472fb429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1a4ff61f3e in QEventDispatcherGlib::processEvents (this=0x24700e0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f1a4ff35cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f1a4ff35ef7 in QEventLoop::exec (this=0x7f1a30b1adb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f1a4fe4d27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f1a4ff18cbf in QInotifyFileSystemWatcherEngine::run (this=0x246d480) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f1a4fe4fd05 in QThreadPrivate::start (arg=0x246d480) at thread/qthread_unix.cpp:331
#9  0x00007f1a47e07efc in start_thread (arg=0x7f1a30b1b700) at pthread_create.c:304
#10 0x00007f1a52d7c89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f1a2a0a7700 (LWP 2130)):
#0  0x00007f1a47e0b1fd in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x2619098) at pthread_mutex_unlock.c:290
#2  0x00007f1a472f9f3f in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1a472fadfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1a472fb429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1a4ff61f3e in QEventDispatcherGlib::processEvents (this=0x2619070, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f1a4ff35cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f1a4ff35ef7 in QEventLoop::exec (this=0x7f1a2a0a6db0, flags=...) at kernel/qeventloop.cpp:201
#8  0x00007f1a4fe4d27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#9  0x00007f1a4ff18cbf in QInotifyFileSystemWatcherEngine::run (this=0x2615940) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f1a4fe4fd05 in QThreadPrivate::start (arg=0x2615940) at thread/qthread_unix.cpp:331
#11 0x00007f1a47e07efc in start_thread (arg=0x7f1a2a0a7700) at pthread_create.c:304
#12 0x00007f1a52d7c89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f1a26c18700 (LWP 2136)):
#0  0x00007f1a472f9683 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1a472fad81 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1a472fb792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1a276f6516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f1a473202b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1a47e07efc in start_thread (arg=0x7f1a26c18700) at pthread_create.c:304
#6  0x00007f1a52d7c89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f1a534937a0 (LWP 2128)):
[KCrash Handler]
#6  0x0000000001d12c18 in ?? ()
#7  0x00007f1a39d20b96 in TaskGroupItem::~TaskGroupItem (this=0x2fc8ad0, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:82
#8  0x00007f1a39d20c59 in TaskGroupItem::~TaskGroupItem (this=0x2fc8ad0, __in_chrg=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:84
#9  0x00007f1a4ff4da88 in QObject::event (this=0x2fc8ad0, e=<optimized out>) at kernel/qobject.cpp:1200
#10 0x00007f1a4f90589b in QGraphicsWidget::event (this=0x2fc8ad0, event=0x30b7ae0) at graphicsview/qgraphicswidget.cpp:1455
#11 0x00007f1a4f2e7424 in notify_helper (e=0x30b7ae0, receiver=0x2fc8ad0, this=0x1b6e1a0) at kernel/qapplication.cpp:4486
#12 QApplicationPrivate::notify_helper (this=0x1b6e1a0, receiver=0x2fc8ad0, e=0x30b7ae0) at kernel/qapplication.cpp:4458
#13 0x00007f1a4f2ec291 in QApplication::notify (this=0x1b61f60, receiver=0x2fc8ad0, e=0x30b7ae0) at kernel/qapplication.cpp:4365
#14 0x00007f1a50be5126 in KApplication::notify (this=0x1b61f60, receiver=0x2fc8ad0, event=0x30b7ae0) at ../../kdeui/kernel/kapplication.cpp:311
#15 0x00007f1a4ff36afc in QCoreApplication::notifyInternal (this=0x1b61f60, receiver=0x2fc8ad0, event=0x30b7ae0) at kernel/qcoreapplication.cpp:787
#16 0x00007f1a4ff3a51f in sendEvent (event=0x30b7ae0, receiver=0x2fc8ad0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#17 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0x1af0430) at kernel/qcoreapplication.cpp:1428
#18 0x00007f1a4ff3a7c4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1071
#19 0x00007f1a5307b1a3 in kdemain (argc=1, argv=0x7fffb196d0d8) at ../../../../plasma/desktop/shell/main.cpp:120
#20 0x00007f1a52cbc30d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffb196d0d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffb196d0c8) at libc-start.c:226
#21 0x0000000000400671 in _start ()

Possible duplicates by query: bug 288964, bug 288927, bug 288822, bug 288765, bug 288715.

Reported using DrKonqi