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-generic x86_64
Distribution: Ubuntu 11.10

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

it doesn't matter which programmes are open, plasma desktop crashes, but I think that every time it happens dolphin is open.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma-Desktop-Umgebung (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fbb030967a0 (LWP 1576))]

Thread 4 (Thread 0x7fbadd7fd700 (LWP 1577)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007fbadd7fcad0 in ?? ()
#2  0x00007fff12bff7e7 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 3 (Thread 0x7fbad6849700 (LWP 1580)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007fbad6848ad0 in ?? ()
#2  0x00007fff12bff7e7 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 2 (Thread 0x7fbad31d4700 (LWP 1583)):
#0  0x00007fbb02977773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fbaf6f01f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbaf6f02792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbad3cb2516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fbaf6f272b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fbaf7a0eefc in start_thread (arg=0x7fbad31d4700) at pthread_create.c:304
#6  0x00007fbb0298389d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fbb030967a0 (LWP 1576)):
[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=0x4896120) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007fbae81fb112 in WindowTaskItem::publishIconGeometry (this=0x3c14a50) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007fbae8209b7c in AbstractTaskItem::timerEvent (this=0x3c14a50, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007fbaffb54789 in QObject::event (this=0x3c14a50, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007fbaff50c89b in QGraphicsWidget::event (this=0x3c14a50, event=0x7fff12afa040) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007fbafeeee424 in notify_helper (e=0x7fff12afa040, receiver=0x3c14a50, this=0x2466f90) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0x2466f90, receiver=0x3c14a50, e=0x7fff12afa040) at kernel/qapplication.cpp:4458
#15 0x00007fbafeef3291 in QApplication::notify (this=0x2441270, receiver=0x3c14a50, e=0x7fff12afa040) at kernel/qapplication.cpp:4365
#16 0x00007fbb007ec126 in KApplication::notify (this=0x2441270, receiver=0x3c14a50, event=0x7fff12afa040) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007fbaffb3dafc in QCoreApplication::notifyInternal (this=0x2441270, receiver=0x3c14a50, event=0x7fff12afa040) at kernel/qcoreapplication.cpp:787
#18 0x00007fbaffb6ad62 in sendEvent (event=0x7fff12afa040, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x2460730) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007fbaffb68538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007fbaf6f01a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fbaf6f02258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fbaf6f02429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fbaffb68ed6 in QEventDispatcherGlib::processEvents (this=0x23daf40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007fbafef9607e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007fbaffb3ccf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007fbaffb3cef7 in QEventLoop::exec (this=0x7fff12afa2d0, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007fbaffb41789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007fbb02c821a3 in kdemain (argc=1, argv=0x7fff12afa6b8) at ../../../../plasma/desktop/shell/main.cpp:120
#31 0x00007fbb028c330d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff12afa6b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff12afa6a8) at libc-start.c:226
#32 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 290030.

Possible duplicates by query: bug 290559, bug 290538, bug 290507, bug 290506, bug 290505.

Reported using DrKonqi