Bug 191412 - taskbar crash after starting an application
Summary: taskbar crash after starting an application
Status: RESOLVED FIXED
Alias: None
Product: plasma4
Classification: Plasma
Component: widget-taskbar (show other bugs)
Version: unspecified
Platform: Unlisted Binaries Linux
: NOR crash
Target Milestone: ---
Assignee: Plasma Bugs List
URL:
Keywords:
: 191448 191456 191571 191701 191911 191983 192043 192089 192194 192345 192411 192482 192578 192713 192806 192848 192868 192913 192933 192987 193091 193159 193180 193186 193253 193262 193295 193361 193397 193412 193457 193494 193526 193576 193601 193620 193646 193691 193727 193728 193729 193794 193799 193852 193862 193875 193936 193975 193980 194039 194081 194140 194208 194247 194280 194372 194400 194414 194423 194465 194514 194520 194625 194658 194771 194779 194795 194842 194882 194909 195089 195160 195352 195370 195384 195437 195451 195591 (view as bug list)
Depends on:
Blocks:
 
Reported: 2009-05-03 04:18 UTC by Shaun Reich
Modified: 2011-01-10 23:54 UTC (History)
58 users (show)

See Also:
Latest Commit:
Version Fixed In:

Attachments
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault (4.49 KB, text/plain)
2011-01-10 15:09 UTC, tony 		Details
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Description Shaun Reich 2009-05-03 04:18:15 UTC 
Title: Plasma crashed after starting an application (happened with kdevelop and konqueror on separate occasions)

What I was doing when the application crashed:
I feel that this is reproducable, it has occurred quite a few times to me, but I have no idea what is doing it. This is recent svn (today's), and has been going on for some time now.

It usually tends to occur when you do certain tasks. For me, it has occurred when I follow a link via IRC using konqueror (the client runs konqueror itself). It has also occurred when I have started an application via the icon on the desktop (when in Desktop containment mode), i.e. KDevelop4.

Everything is built from trunk...

 -- Application and System information:
Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.71 (KDE 4.2.71 (KDE 4.3 >= 20090428))
Qt Version: 4.5.0
Operating System: Linux 2.6.29-ARCH i686

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Aborted
[Current thread is 0 (LWP 2842)]

Thread 2 (Thread 0xa7de8b90 (LWP 2847)):
#0  0xb80dc424 in __kernel_vsyscall ()
#1  0xb65fcc55 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb6666ed0 in QWaitConditionPrivate::wait (this=0x8e850c0, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#3  0xb66669cf in QWaitCondition::wait (this=0x8e49020, mutex=0x8e4901c, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#4  0xb7a3e2f3 in QHostInfoAgent::run (this=0x8e49010) at kernel/qhostinfo.cpp:260
#5  0xb66665ab in QThreadPrivate::start (arg=0x8e49010) at thread/qthread_unix.cpp:189
#6  0xb65f9155 in start_thread () from /lib/libpthread.so.0
#7  0xb6457a5e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb3f87950 (LWP 2842)):
[KCrash Handler]
#6  0xb80dc424 in __kernel_vsyscall ()
#7  0xb63b1790 in raise () from /lib/libc.so.6
#8  0xb63b30c8 in abort () from /lib/libc.so.6
#9  0xb665c4df in qt_message_output (msgType=QtFatalMsg, buf=0x96e7348 "ASSERT: \"d\" in file /home/shaun/kde/include/ksharedptr.h, line 126") at global/qglobal.cpp:2006
#10 0xb665c556 in qFatal (msg=0xb67b0514 "ASSERT: \"%s\" in file %s, line %d") at global/qglobal.cpp:2201
#11 0xb665c995 in qt_assert (assertion=0xa8b819c5 "d", file=0xa8b819a0 "/home/shaun/kde/include/ksharedptr.h", line=126) at global/qglobal.cpp:1777
#12 0xa8b6ab71 in KSharedPtr<TaskManager::Task>::operator-> (this=0xbf9f6c24) at /home/shaun/kde/include/ksharedptr.h:126
#13 0xa8b777c0 in AbstractTaskItem::timerEvent (this=0x96200e8, event=0xbf9f71f4) at /home/shaun/kde/src/kdebase/workspace/plasma/applets/tasks/abstracttaskitem.cpp:399
#14 0xb676f346 in QObject::event (this=0x96200e8, e=0xbf9f71f4) at kernel/qobject.cpp:1082
#15 0xb7089361 in QGraphicsWidget::event (this=0x96200e8, event=0xbf9f71f4) at graphicsview/qgraphicswidget.cpp:1317
#16 0xb69db72b in QApplicationPrivate::notify_helper (this=0x885fa40, receiver=0x96200e8, e=0xbf9f71f4) at kernel/qapplication.cpp:4084
#17 0xb69dbadf in QApplication::notify (this=0x8858930, receiver=0x96200e8, e=0xbf9f71f4) at kernel/qapplication.cpp:3631
#18 0xb77c3561 in KApplication::notify (this=0x8858930, receiver=0x96200e8, event=0xbf9f71f4) at /home/shaun/kde/src/kdelibs/kdeui/kernel/kapplication.cpp:307
#19 0xb675b117 in QCoreApplication::notifyInternal (this=0x8858930, receiver=0x96200e8, event=0xbf9f71f4) at kernel/qcoreapplication.cpp:598
#20 0xb69d816d in QCoreApplication::sendEvent (receiver=0x96200e8, event=0xbf9f71f4) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#21 0xb678d1a9 in QTimerInfoList::activateTimers (this=0x8861cfc) at kernel/qeventdispatcher_unix.cpp:572
#22 0xb678aaf4 in timerSourceDispatch (source=0x8861cc8) at kernel/qeventdispatcher_glib.cpp:164
#23 0xb5246718 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#24 0xb5249c7b in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#25 0xb5249df8 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#26 0xb6789e26 in QEventDispatcherGlib::processEvents (this=0x885f050, flags={i = -1080069256}) at kernel/qeventdispatcher_glib.cpp:323
#27 0xb6a88a68 in QGuiEventDispatcherGlib::processEvents (this=0x885f050, flags={i = -1080069208}) at kernel/qguieventdispatcher_glib.cpp:202
#28 0xb67580fc in QEventLoop::processEvents (this=0xbf9f7430, flags={i = -1080069136}) at kernel/qeventloop.cpp:149
#29 0xb6758356 in QEventLoop::exec (this=0xbf9f7430, flags={i = -1080069064}) at kernel/qeventloop.cpp:196
#30 0xb675b8ef in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#31 0xb69db444 in QApplication::exec () at kernel/qapplication.cpp:3553
#32 0xb809398a in kdemain (argc=1, argv=0xbf9f75c4) at /home/shaun/kde/src/kdebase/workspace/plasma/shells/desktop/main.cpp:50
#33 0x08048756 in main (argc=) at /home/shaun/kde/build/kdebase/workspace/plasma/shells/desktop/plasma-desktop_dummy.cpp:3
Comment 1 Dario Andres 2009-05-03 14:03:34 UTC 
This could be related to bug 191448
Comment 2 Pino Toscano 2009-05-03 14:11:42 UTC 
*** Bug 191448 has been marked as a duplicate of this bug. ***
Comment 3 Pino Toscano 2009-05-04 11:37:26 UTC 
*** Bug 191571 has been marked as a duplicate of this bug. ***
Comment 4 Pino Toscano 2009-05-05 17:46:27 UTC 
*** Bug 191701 has been marked as a duplicate of this bug. ***
Comment 5 Dario Andres 2009-05-06 02:25:00 UTC 
The steps should be similar to the ones in bug 191141 comment 1.
I'm now getting something similar to bug 191448 (which is marked as duplicate of this bug, but I don't know if they are exactly the same, mine has no assert)
Comment 6 Pino Toscano 2009-05-07 16:58:01 UTC 
*** Bug 191911 has been marked as a duplicate of this bug. ***
Comment 7 stanislav 2009-05-07 17:37:12 UTC 
Plasma crashed when starting Firefox
Firefox 3.0.10
Crashing at first start after logging in kde

 -- Application and System information:
Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.71 (KDE 4.2.71 (KDE 4.3 >= 20090428))
Qt Version: 4.5.0
Operating System: Linux 2.6.29-ARCH x86_64

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 0 (LWP 15473)]

Thread 3 (Thread 0x7fa12b37c950 (LWP 15474)):
#0  0x00007fa145ab4d69 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib/libpthread.so.0
#1  0x00007fa145d25d19 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#2  0x00007fa1494fbe1c in ?? () from /usr/lib/libQtNetwork.so.4
#3  0x00007fa145d24d22 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007fa145ab0fc7 in start_thread () from /lib/libpthread.so.0
#5  0x00007fa14507f5dd in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fa129294950 (LWP 15475)):
#0  0xffffffffff6001a7 in ?? ()
#1  0x00007fff52dfe5fb in ?? ()
#2  0x00007fa141b30f6f in clock_gettime () from /lib/librt.so.1
#3  0x00007fa145e382ed in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007fa145e384e1 in ?? () from /usr/lib/libQtCore.so.4
#5  0x00007fa145e3a3f3 in ?? () from /usr/lib/libQtCore.so.4
#6  0x00007fa145e369ac in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007fa1418a5fe2 in g_main_context_prepare () from
/usr/lib/libglib-2.0.so.0
#8  0x00007fa1418a63ff in g_main_context_iterate () from
/usr/lib/libglib-2.0.so.0
#9  0x00007fa1418a687c in g_main_context_iteration () from
/usr/lib/libglib-2.0.so.0
#10 0x00007fa145e367fe in QEventDispatcherGlib::processEvents () from
/usr/lib/libQtCore.so.4
#11 0x00007fa145e0ba32 in QEventLoop::processEvents () from
/usr/lib/libQtCore.so.4
#12 0x00007fa145e0bdfd in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#13 0x00007fa149923dfc in KIO::NetAccess::enter_loop () from
/usr/lib/libkio.so.5
#14 0x00007fa149924436 in KIO::NetAccess::synchronousRunInternal () from
/usr/lib/libkio.so.5
#15 0x00007fa149924a6e in KIO::NetAccess::synchronousRun () from
/usr/lib/libkio.so.5
#16 0x00007fa12bbd24a4 in Update_Thread::downloadFile () from
/usr/lib/kde4/plasma_applet_cwp.so
#17 0x00007fa12bbdd6b8 in Update_Thread::collectAndParseData () from
/usr/lib/kde4/plasma_applet_cwp.so
#18 0x00007fa12bbde4dc in Update_Thread::run () from
/usr/lib/kde4/plasma_applet_cwp.so
#19 0x00007fa145d24d22 in ?? () from /usr/lib/libQtCore.so.4
#20 0x00007fa145ab0fc7 in start_thread () from /lib/libpthread.so.0
#21 0x00007fa14507f5dd in clone () from /lib/libc.so.6
#22 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fa14ab3c790 (LWP 15473)):
[KCrash Handler]
#5  0x00007fa12d2ec850 in TaskManager::Task::window () from
/usr/lib/libtaskmanager.so.4
#6  0x00007fa12cd24b43 in AbstractTaskItem::timerEvent () from
/usr/lib/kde4/plasma_applet_tasks.so
#7  0x00007fa145e1ce43 in QObject::event () from /usr/lib/libQtCore.so.4
#8  0x00007fa146b280fb in QGraphicsWidget::event () from /usr/lib/libQtGui.so.4
#9  0x00007fa14651570d in QApplicationPrivate::notify_helper () from
/usr/lib/libQtGui.so.4
#10 0x00007fa14651d8fa in QApplication::notify () from /usr/lib/libQtGui.so.4
#11 0x00007fa148e38cfb in KApplication::notify () from /usr/lib/libkdeui.so.5
#12 0x00007fa145e0d18c in QCoreApplication::notifyInternal () from
/usr/lib/libQtCore.so.4
#13 0x00007fa145e3a356 in ?? () from /usr/lib/libQtCore.so.4
#14 0x00007fa145e3687d in ?? () from /usr/lib/libQtCore.so.4
#15 0x00007fa1418a301a in g_main_context_dispatch () from
/usr/lib/libglib-2.0.so.0
#16 0x00007fa1418a66e0 in g_main_context_iterate () from
/usr/lib/libglib-2.0.so.0
#17 0x00007fa1418a687c in g_main_context_iteration () from
/usr/lib/libglib-2.0.so.0
#18 0x00007fa145e367df in QEventDispatcherGlib::processEvents () from
/usr/lib/libQtCore.so.4
#19 0x00007fa1465ac74f in ?? () from /usr/lib/libQtGui.so.4
#20 0x00007fa145e0ba32 in QEventLoop::processEvents () from
/usr/lib/libQtCore.so.4
#21 0x00007fa145e0bdfd in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#22 0x00007fa145e0e0c4 in QCoreApplication::exec () from
/usr/lib/libQtCore.so.4
#23 0x00007fa14a81b8bb in kdemain () from
/usr/lib/libkdeinit4_plasma-desktop.so
#24 0x00007fa144fce546 in __libc_start_main () from /lib/libc.so.6
#25 0x0000000000400809 in _start ()
Comment 8 Andrew Coles 2009-05-08 14:33:13 UTC 
Valgrind trace of plasmoidviewer tasks:

==3923== Invalid read of size 4
==3923==    at 0x144F72E7: TaskManager::Task::window() const (task.cpp:355)
==3923==    by 0x4A1B15E: QObject::event(QEvent*) (qobject.cpp:1082)
==3923==    by 0x52FC066: QGraphicsWidget::event(QEvent*) (qgraphicswidget.cpp:1317)
==3923==    by 0x4C78F2B: QApplicationPrivate::notify_helper(QObject*, QEvent*) (qapplication.cpp:4084)
==3923==    by 0x4C8122D: QApplication::notify(QObject*, QEvent*) (qapplication.cpp:3631)
==3923==    by 0x41FCF4C: KApplication::notify(QObject*, QEvent*) (kapplication.cpp:307)
==3923==    by 0x4A0AA3A: QCoreApplication::notifyInternal(QObject*, QEvent*) (qcoreapplication.cpp:602)
==3923==    by 0x4A39D70: QTimerInfoList::activateTimers() (qcoreapplication.h:213)
==3923==    by 0x4A364DF: timerSourceDispatch(_GSource*, int (*)(void*), void*) (qeventdispatcher_glib.cpp:164)
==3923==    by 0x6EB2B87: g_main_context_dispatch (gmain.c:1814)
==3923==    by 0x6EB60EA: g_main_context_iterate (gmain.c:2448)
==3923==    by 0x6EB6267: g_main_context_iteration (gmain.c:2511)
==3923==  Address 0xc is not stack'd, malloc'd or (recently) free'd

Will carry on looking, but I'm no expert in this part of the code.
Comment 9 Pino Toscano 2009-05-08 15:58:50 UTC 
*** Bug 192043 has been marked as a duplicate of this bug. ***
Comment 10 Pino Toscano 2009-05-09 00:29:49 UTC 
*** Bug 192089 has been marked as a duplicate of this bug. ***
Comment 11 Pino Toscano 2009-05-11 17:30:58 UTC 
*** Bug 192345 has been marked as a duplicate of this bug. ***
Comment 12 Pino Toscano 2009-05-12 11:06:49 UTC 
*** Bug 192411 has been marked as a duplicate of this bug. ***
Comment 13 Pino Toscano 2009-05-12 11:22:34 UTC 
SVN commit 966907 by aseigo:

make sure that the items we hover have tasks before we access them; also reduce
the default allocation of the QVarLengthArray down to 32 items since it'll be
rare to have more than that number of windows in a group (and 1024 is just
silly :)
BUG:192411


 M  +28 -5     abstracttaskitem.cpp  


WebSVN link: http://websvn.kde.org/?view=rev&revision=966907
Comment 14 Pino Toscano 2009-05-12 11:22:47 UTC 
*** Bug 192411 has been marked as a duplicate of this bug. ***
Comment 15 Pino Toscano 2009-05-12 22:22:49 UTC 
*** Bug 192482 has been marked as a duplicate of this bug. ***
Comment 16 miki 2009-05-12 22:26:45 UTC 
still crash with r 967171
Comment 17 Dario Andres 2009-05-12 22:29:55 UTC 
@miki: if it is still crashing at that revision, is it the same backtrace as this? May be the issue was unrelated.
Comment 18 miki 2009-05-12 22:35:28 UTC 
sry but no backtrance ....just crash and plasma reboot :(
Comment 19 Dario Andres 2009-05-12 22:40:19 UTC 
@miki, if you get a new backtrace, post it in a new report, as it may be unrelated. Thanks!
Comment 20 miki 2009-05-12 22:41:48 UTC 
oket , tnx
Comment 21 Pino Toscano 2009-05-13 17:50:33 UTC 
*** Bug 192578 has been marked as a duplicate of this bug. ***
Comment 22 Pino Toscano 2009-05-14 23:19:15 UTC 
*** Bug 192713 has been marked as a duplicate of this bug. ***
Comment 23 Pino Toscano 2009-05-14 23:30:39 UTC 
*** Bug 192194 has been marked as a duplicate of this bug. ***
Comment 24 Pino Toscano 2009-05-15 19:20:32 UTC 
*** Bug 192806 has been marked as a duplicate of this bug. ***
Comment 25 Pino Toscano 2009-05-16 10:45:57 UTC 
*** Bug 192848 has been marked as a duplicate of this bug. ***
Comment 26 Pino Toscano 2009-05-16 13:08:23 UTC 
*** Bug 192868 has been marked as a duplicate of this bug. ***
Comment 27 Dario Andres 2009-05-16 19:10:49 UTC 
*** Bug 192913 has been marked as a duplicate of this bug. ***
Comment 28 Pino Toscano 2009-05-16 22:11:56 UTC 
*** Bug 192933 has been marked as a duplicate of this bug. ***
Comment 29 Pino Toscano 2009-05-17 12:58:50 UTC 
*** Bug 192987 has been marked as a duplicate of this bug. ***
Comment 30 Pino Toscano 2009-05-18 11:01:32 UTC 
*** Bug 193091 has been marked as a duplicate of this bug. ***
Comment 31 Pino Toscano 2009-05-18 22:55:10 UTC 
*** Bug 193159 has been marked as a duplicate of this bug. ***
Comment 32 Dario Andres 2009-05-19 03:59:58 UTC 
*** Bug 193180 has been marked as a duplicate of this bug. ***
Comment 33 Pino Toscano 2009-05-19 11:05:09 UTC 
*** Bug 193186 has been marked as a duplicate of this bug. ***
Comment 34 Dario Andres 2009-05-19 17:42:08 UTC 
*** Bug 193253 has been marked as a duplicate of this bug. ***
Comment 35 Dario Andres 2009-05-19 19:38:16 UTC 
*** Bug 193262 has been marked as a duplicate of this bug. ***
Comment 36 Pino Toscano 2009-05-19 23:45:36 UTC 
*** Bug 193295 has been marked as a duplicate of this bug. ***
Comment 37 Dario Andres 2009-05-20 14:48:14 UTC 
*** Bug 193361 has been marked as a duplicate of this bug. ***
Comment 38 Dario Andres 2009-05-20 20:31:50 UTC 
*** Bug 193397 has been marked as a duplicate of this bug. ***
Comment 39 Dario Andres 2009-05-20 22:02:19 UTC 
*** Bug 193412 has been marked as a duplicate of this bug. ***
Comment 40 Pino Toscano 2009-05-21 11:43:00 UTC 
*** Bug 193457 has been marked as a duplicate of this bug. ***
Comment 41 Pino Toscano 2009-05-21 14:13:19 UTC 
*** Bug 193494 has been marked as a duplicate of this bug. ***
Comment 42 Pino Toscano 2009-05-21 18:14:08 UTC 
*** Bug 193526 has been marked as a duplicate of this bug. ***
Comment 43 Dario Andres 2009-05-22 00:10:41 UTC 
*** Bug 193576 has been marked as a duplicate of this bug. ***
Comment 44 Dario Andres 2009-05-22 04:56:46 UTC 
*** Bug 193601 has been marked as a duplicate of this bug. ***
Comment 45 Pino Toscano 2009-05-22 11:58:25 UTC 
*** Bug 193620 has been marked as a duplicate of this bug. ***
Comment 46 Dario Andres 2009-05-22 16:24:23 UTC 
*** Bug 193646 has been marked as a duplicate of this bug. ***
Comment 47 Pino Toscano 2009-05-22 22:33:00 UTC 
*** Bug 193691 has been marked as a duplicate of this bug. ***
Comment 48 Pino Toscano 2009-05-23 11:29:45 UTC 
*** Bug 193727 has been marked as a duplicate of this bug. ***
Comment 49 Pino Toscano 2009-05-23 11:41:17 UTC 
*** Bug 193728 has been marked as a duplicate of this bug. ***
Comment 50 Pino Toscano 2009-05-23 11:42:42 UTC 
*** Bug 193729 has been marked as a duplicate of this bug. ***
Comment 51 Pino Toscano 2009-05-23 20:02:54 UTC 
*** Bug 193794 has been marked as a duplicate of this bug. ***
Comment 52 Pino Toscano 2009-05-23 20:11:45 UTC 
*** Bug 193799 has been marked as a duplicate of this bug. ***
Comment 53 Pino Toscano 2009-05-24 11:57:48 UTC 
*** Bug 193852 has been marked as a duplicate of this bug. ***
Comment 54 Pino Toscano 2009-05-24 12:25:56 UTC 
*** Bug 193862 has been marked as a duplicate of this bug. ***
Comment 55 Pino Toscano 2009-05-24 13:21:52 UTC 
*** Bug 193875 has been marked as a duplicate of this bug. ***
Comment 56 Dario Andres 2009-05-24 20:08:51 UTC 
*** Bug 193936 has been marked as a duplicate of this bug. ***
Comment 57 Pino Toscano 2009-05-25 11:18:46 UTC 
*** Bug 193975 has been marked as a duplicate of this bug. ***
Comment 58 Pino Toscano 2009-05-25 11:19:15 UTC 
*** Bug 193980 has been marked as a duplicate of this bug. ***
Comment 59 Pino Toscano 2009-05-25 16:15:10 UTC 
*** Bug 194039 has been marked as a duplicate of this bug. ***
Comment 60 Pino Toscano 2009-05-25 21:36:10 UTC 
*** Bug 194081 has been marked as a duplicate of this bug. ***
Comment 61 Pino Toscano 2009-05-26 11:47:41 UTC 
*** Bug 194140 has been marked as a duplicate of this bug. ***
Comment 62 Pino Toscano 2009-05-26 21:25:45 UTC 
*** Bug 194208 has been marked as a duplicate of this bug. ***
Comment 63 Jonathan Thomas 2009-05-27 02:26:54 UTC 
*** Bug 194247 has been marked as a duplicate of this bug. ***
Comment 64 Pino Toscano 2009-05-27 10:52:15 UTC 
*** Bug 194280 has been marked as a duplicate of this bug. ***
Comment 65 Pino Toscano 2009-05-28 08:36:40 UTC 
*** Bug 194372 has been marked as a duplicate of this bug. ***
Comment 66 Pino Toscano 2009-05-28 12:32:33 UTC 
*** Bug 194400 has been marked as a duplicate of this bug. ***
Comment 67 Pino Toscano 2009-05-28 12:34:08 UTC 
*** Bug 194414 has been marked as a duplicate of this bug. ***
Comment 68 Dario Andres 2009-05-28 13:44:09 UTC 
*** Bug 194423 has been marked as a duplicate of this bug. ***
Comment 69 Sjors Gielen 2009-05-28 17:29:06 UTC 
My back trace says:

Thread 1 (Thread 0x7f074f4337a0 (LWP 32293)):
[KCrash Handler]
#5  TaskManager::Task::window (this=0x0) at
../../../libs/taskmanager/task.cpp:357
#6  0x00007f0730c33c4e in AbstractTaskItem::timerEvent (this=0x3dda0c0,
event=<value optimized out>) at
../../../../plasma/applets/tasks/abstracttaskitem.cpp:403
#7  0x00007f074c0d7b83 in QObject::event (this=0x3dda0c0, e=0x3488b00) at
kernel/qobject.cpp:1082
#8  0x00007f074cdd810b in QGraphicsWidget::event (this=0x3dda0c0,
event=0x7fff73c09110) at graphicsview/qgraphicswidget.cpp:1340

(see #194400 for the full backtrace)
TaskManager::Task::window (this=0x0) <-- This seems to be the clue; as far as I can see r966907 indeed fixed this specific bug. People still having crashes  are probably indeed suffering a different bug.
Comment 70 Pino Toscano 2009-05-28 18:43:16 UTC 
> People still having crashes are probably indeed suffering a different bug.

My guess is that you didn't handle all the duplicated of this bug.
All the bugs duplicated of this one have either
  KDE Version: 4.2.71 (KDE 4.2.71 (KDE 4.3 >= 20090428))
or 
  KDE Version: 4.2.85 (KDE 4.2.85 (KDE 4.3 Beta1))
as KDE version, not any other one. In fact, I've not seen a reported bug that would be like this one with KDE >= 4.2.86.
Comment 71 Pino Toscano 2009-05-28 21:54:16 UTC 
*** Bug 194465 has been marked as a duplicate of this bug. ***
Comment 72 Pino Toscano 2009-05-29 10:43:02 UTC 
*** Bug 194520 has been marked as a duplicate of this bug. ***
Comment 73 Pino Toscano 2009-05-29 10:43:08 UTC 
*** Bug 194514 has been marked as a duplicate of this bug. ***
Comment 74 Pino Toscano 2009-05-30 12:11:02 UTC 
*** Bug 194625 has been marked as a duplicate of this bug. ***
Comment 75 Pino Toscano 2009-05-30 15:27:07 UTC 
*** Bug 194658 has been marked as a duplicate of this bug. ***
Comment 76 Pino Toscano 2009-05-31 17:41:03 UTC 
*** Bug 194771 has been marked as a duplicate of this bug. ***
Comment 77 Pino Toscano 2009-05-31 19:26:02 UTC 
*** Bug 194779 has been marked as a duplicate of this bug. ***
Comment 78 Pino Toscano 2009-06-01 01:24:41 UTC 
*** Bug 194795 has been marked as a duplicate of this bug. ***
Comment 79 Pino Toscano 2009-06-01 11:11:42 UTC 
*** Bug 194842 has been marked as a duplicate of this bug. ***
Comment 80 Pino Toscano 2009-06-01 17:46:17 UTC 
*** Bug 194882 has been marked as a duplicate of this bug. ***
Comment 81 Pino Toscano 2009-06-01 21:45:58 UTC 
*** Bug 194909 has been marked as a duplicate of this bug. ***
Comment 82 Pino Toscano 2009-06-03 13:28:56 UTC 
*** Bug 195089 has been marked as a duplicate of this bug. ***
Comment 83 George Goldberg 2009-06-04 00:56:31 UTC 
*** Bug 195160 has been marked as a duplicate of this bug. ***
Comment 84 George Goldberg 2009-06-04 00:58:05 UTC 
*** Bug 191456 has been marked as a duplicate of this bug. ***
Comment 85 George Goldberg 2009-06-04 00:58:50 UTC 
*** Bug 191983 has been marked as a duplicate of this bug. ***
Comment 86 Dario Andres 2009-06-05 18:38:02 UTC 
*** Bug 195352 has been marked as a duplicate of this bug. ***
Comment 87 Pino Toscano 2009-06-06 10:42:28 UTC 
*** Bug 195370 has been marked as a duplicate of this bug. ***
Comment 88 Pino Toscano 2009-06-06 10:42:45 UTC 
*** Bug 195384 has been marked as a duplicate of this bug. ***
Comment 89 Pino Toscano 2009-06-06 12:31:02 UTC 
*** Bug 195437 has been marked as a duplicate of this bug. ***
Comment 90 Dario Andres 2009-06-06 14:11:00 UTC 
*** Bug 195451 has been marked as a duplicate of this bug. ***
Comment 91 Pino Toscano 2009-06-07 20:17:38 UTC 
*** Bug 195591 has been marked as a duplicate of this bug. ***
Comment 92 Bill Klobas 2009-10-27 00:00:06 UTC 
Created attachment 37875


test1
Comment 93 Bill Klobas 2009-10-27 00:02:53 UTC 
Created attachment 37876


test2
Comment 94 Bill Klobas 2009-10-27 00:04:21 UTC 
Created attachment 37877


test3
Comment 95 tony 2011-01-10 15:09:12 UTC 
Created attachment 55823 [details]
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault



-- 
LiZARD 
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb78a5720 (LWP 1628))]
Thread 2 (Thread 0xb05b7b70 (LWP 1629)):
#0  0x0069e416 in __kernel_vsyscall ()
#1  0x002c1884 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x00237df4 in pthread_cond_timedwait () from /lib/libc.so.6
#3  0x064cf94f in wait (this=0x8ca9244, mutex=0x8ca9240, time=30000) at thread/qwaitcondition_unix.cpp:86
#4  QWaitCondition::wait (this=0x8ca9244, mutex=0x8ca9240, time=30000) at thread/qwaitcondition_unix.cpp:160
#5  0x064c35b3 in QThreadPoolThread::run (this=0x8cc47c8) at concurrent/qthreadpool.cpp:140
#6  0x064cedf9 in QThreadPrivate::start (arg=0x8cc47c8) at thread/qthread_unix.cpp:266
#7  0x002bccc9 in start_thread () from /lib/libpthread.so.0
#8  0x0022a69e in clone () from /lib/libc.so.6
Thread 1 (Thread 0xb78a5720 (LWP 1628)):
[KCrash Handler]
#7  0x05189c9c in Notifications::~Notifications (this=0x8fffad8, __in_chrg=<value optimized out>) at ../../../../../plasma/generic/applets/notifications/ui/notifications.cpp:115
#8  0x00a04e21 in Plasma::ExtenderPrivate::loadExtenderItems (this=0x8fd30f0) at ../../plasma/extenders/extender.cpp:736
#9  0x00a05ac2 in Plasma::Extender::Extender (this=0x8fd3308, applet=0x8ac0520) at ../../plasma/extenders/extender.cpp:105
#10 0x009abe20 in Plasma::Applet::extender (this=0x8ac0520) at ../../plasma/applet.cpp:763
#11 0x080638e1 in createCalendarExtender (this=0x8ac0520) at ../../../libs/plasmaclock/clockapplet.cpp:121
#12 ClockApplet::init (this=0x8ac0520) at ../../../libs/plasmaclock/clockapplet.cpp:571
#13 0x02b8285f in Clock::init (this=0x8ac0520) at ../../../../../plasma/generic/applets/digital-clock/clock.cpp:72
#14 0x009cd76c in Plasma::ContainmentPrivate::initApplets (this=0x8820c30) at ../../plasma/containment.cpp:462
#15 0x009e303f in Plasma::CoronaPrivate::importLayout (this=0x85e4a10, conf=..., mergeConfig=false) at ../../plasma/corona.cpp:523
#16 0x009e3d5c in Plasma::Corona::loadLayout (this=0x85dda88, configName=...) at ../../plasma/corona.cpp:458
#17 0x009e495e in Plasma::Corona::initializeLayout (this=0x85dda88, configName=...) at ../../plasma/corona.cpp:361
#18 0x00834972 in PlasmaApp::corona (this=0x85306a0) at ../../../../plasma/desktop/shell/plasmaapp.cpp:800
#19 0x00834f5e in PlasmaApp::setupDesktop (this=0x85306a0) at ../../../../plasma/desktop/shell/plasmaapp.cpp:286
#20 0x0083804c in PlasmaApp::qt_metacall (this=0x85306a0, _c=QMetaObject::InvokeMetaMethod, _id=15, _a=0x85d4df0) at ./plasmaapp.moc:148
#21 0x065d68ca in QMetaObject::metacall (object=0x85306a0, cl=QMetaObject::ReadProperty, idx=42, argv=0x85d4df0) at kernel/qmetaobject.cpp:237
#22 0x065e1df6 in QMetaCallEvent::placeMetaCall (this=0x85d6060, object=0x85306a0) at kernel/qobject.cpp:534
#23 0x065e36a2 in QObject::event (this=0x85306a0, e=0x9068b28) at kernel/qobject.cpp:1219
#24 0x065d09db in QCoreApplication::event (this=0x85306a0, e=0x85d6060) at kernel/qcoreapplication.cpp:1561
#25 0x01a2d4d4 in QApplication::event (this=0x85306a0, e=0x85d6060) at kernel/qapplication.cpp:2439
#26 0x01a29fdc in QApplicationPrivate::notify_helper (this=0x853c290, receiver=0x85306a0, e=0x85d6060) at kernel/qapplication.cpp:4396
#27 0x01a3004e in QApplication::notify (this=0x85306a0, receiver=0x85306a0, e=0x85d6060) at kernel/qapplication.cpp:3798
#28 0x00dc568a in KApplication::notify (this=0x85306a0, receiver=0x85306a0, event=0x85d6060) at ../../kdeui/kernel/kapplication.cpp:310
#29 0x065d0b3b in QCoreApplication::notifyInternal (this=0x85306a0, receiver=0x85306a0, event=0x85d6060) at kernel/qcoreapplication.cpp:732
#30 0x065d3d8b in sendEvent (receiver=0x0, event_type=0, data=0x851a028) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#31 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x851a028) at kernel/qcoreapplication.cpp:1373
#32 0x065d3f4d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1266
#33 0x065ffa74 in sendPostedEvents (s=0x853e710) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#34 postEventSourceDispatch (s=0x853e710) at kernel/qeventdispatcher_glib.cpp:277
#35 0x01707855 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#36 0x0170b668 in ?? () from /lib/libglib-2.0.so.0
#37 0x0170b848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#38 0x065ff565 in QEventDispatcherGlib::processEvents (this=0x8519ce8, flags=...) at kernel/qeventdispatcher_glib.cpp:415
#39 0x01aebbe5 in QGuiEventDispatcherGlib::processEvents (this=0x8519ce8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#40 0x065cf609 in QEventLoop::processEvents (this=0xbfb70804, flags=) at kernel/qeventloop.cpp:149
#41 0x065cfa8a in QEventLoop::exec (this=0xbfb70804, flags=...) at kernel/qeventloop.cpp:201
#42 0x065d400f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#43 0x01a28e07 in QApplication::exec () at kernel/qapplication.cpp:3672
#44 0x0081986e in kdemain (argc=1, argv=0xbfb70a14) at ../../../../plasma/desktop/shell/main.cpp:118
#45 0x080485bb in main (argc=1, argv=0xbfb70a14) at plasma-desktop_dummy.cpp:3
Comment 96 Dario Andres 2011-01-10 23:54:07 UTC 
[Comment from a bug triager]
@tony: your crash is a different one: bug 228987
Regards