Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.1 (4.6.1)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-28-generic x86_64
Distribution: Ubuntu 10.10

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

I changed from desktop 1 to desktop 2. I noticed this behaviour several times - however it does not happen always.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f0019e4a780 (LWP 2135))]

Thread 3 (Thread 0x7efff7c4c700 (LWP 2164)):
#0  0x00007f001974b203 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f000e593009 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f000e59345c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f0016ac41e6 in QEventDispatcherGlib::processEvents (this=0x2c87790, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:417
#4  0x00007f0016a96a02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007f0016a96dec in QEventLoop::exec (this=0x7efff7c4bd90, flags=) at kernel/qeventloop.cpp:201
#6  0x00007f00169a12fd in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#7  0x00007f0016a765f8 in QInotifyFileSystemWatcherEngine::run (this=0x2c86c90) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f00169a427e in QThreadPrivate::start (arg=0x2c86c90) at thread/qthread_unix.cpp:266
#9  0x00007f000ec45971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#10 0x00007f001975792d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7efff5579700 (LWP 2167)):
#0  0x00007f001974b203 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f000e593009 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f000e59345c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f0016ac41e6 in QEventDispatcherGlib::processEvents (this=0x2d63000, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:417
#4  0x00007f0016a96a02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007f0016a96dec in QEventLoop::exec (this=0x7efff5578d90, flags=) at kernel/qeventloop.cpp:201
#6  0x00007f00169a12fd in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#7  0x00007f0016a765f8 in QInotifyFileSystemWatcherEngine::run (this=0x2d62610) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f00169a427e in QThreadPrivate::start (arg=0x2d62610) at thread/qthread_unix.cpp:266
#9  0x00007f000ec45971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#10 0x00007f001975792d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f0019e4a780 (LWP 2135)):
[KCrash Handler]
#6  0x00007effffe38837 in TaskItemLayout::layoutItems (this=0x2abe520) at ../../../../../plasma/desktop/applets/tasks/taskitemlayout.cpp:347
#7  0x00007effffe390fb in TaskItemLayout::insert (this=0x2abe520, index=<value optimized out>, item=0x355e980) at ../../../../../plasma/desktop/applets/tasks/taskitemlayout.cpp:149
#8  0x00007effffe392ca in TaskItemLayout::addTaskItem (this=0x2abe520, item=0x355e980) at ../../../../../plasma/desktop/applets/tasks/taskitemlayout.cpp:102
#9  0x00007effffe45ff8 in TaskGroupItem::itemAdded (this=0x29d7600, groupableItem=0x35b1bb0) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:509
#10 0x00007effffe454c8 in TaskGroupItem::reload (this=0x29d7600) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:330
#11 0x00007effffe45987 in TaskGroupItem::setGroup (this=0x29d7600, group=0x24ebd40) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:379
#12 0x00007effffe3356c in Tasks::qt_metacall (this=0x29b8f20, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffe1671e60) at ./tasks.moc:99
#13 0x00007f0016aafb27 in QMetaObject::activate (sender=0x29ce120, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3280
#14 0x00007f0000071a63 in TaskManager::GroupManagerPrivate::actuallyReloadTasks (this=0x29ccd00) at ../../../libs/taskmanager/groupmanager.cpp:191
#15 0x00007f0000073d45 in TaskManager::GroupManager::qt_metacall (this=0x29ce120, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffe1672050) at ./groupmanager.moc:117
#16 0x00007f0016aafb27 in QMetaObject::activate (sender=0x29ccd58, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3280
#17 0x00007f0016aa98f9 in QObject::event (this=0x29ccd58, e=0x0) at kernel/qobject.cpp:1183
#18 0x00007f0015dfefdc in QApplicationPrivate::notify_helper (this=0x2395800, receiver=0x29ccd58, e=0x7fffe16727a0) at kernel/qapplication.cpp:4396
#19 0x00007f0015e04aed in QApplication::notify (this=0x23858a0, receiver=0x29ccd58, e=0x7fffe16727a0) at kernel/qapplication.cpp:4277
#20 0x00007f001779e2c6 in KApplication::notify (this=0x23858a0, receiver=0x29ccd58, event=0x7fffe16727a0) at ../../kdeui/kernel/kapplication.cpp:311
#21 0x00007f0016a97cdc in QCoreApplication::notifyInternal (this=0x23858a0, receiver=0x29ccd58, event=0x7fffe16727a0) at kernel/qcoreapplication.cpp:732
#22 0x00007f0016ac76f2 in sendEvent (this=0x2398ff0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#23 QTimerInfoList::activateTimers (this=0x2398ff0) at kernel/qeventdispatcher_unix.cpp:602
#24 0x00007f0016ac44a4 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#25 0x00007f000e58f342 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#26 0x00007f000e5932a8 in ?? () from /lib/libglib-2.0.so.0
#27 0x00007f000e59345c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#28 0x00007f0016ac4193 in QEventDispatcherGlib::processEvents (this=0x2345c20, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:415
#29 0x00007f0015eb1a4e in QGuiEventDispatcherGlib::processEvents (this=0x3569cf0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#30 0x00007f0016a96a02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#31 0x00007f0016a96dec in QEventLoop::exec (this=0x7fffe1672a40, flags=) at kernel/qeventloop.cpp:201
#32 0x00007f0016a9aebb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#33 0x00007f0019a35cf3 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/desktop/shell/main.cpp:118
#34 0x00007f001968fd8e in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fffe1672e18) at libc-start.c:226
#35 0x0000000000400669 in _start ()

This bug may be a duplicate of or related to bug 267888.

Possible duplicates by query: bug 268295, bug 267888, bug 267548, bug 266400, bug 265697.

Reported using DrKonqi