Bug 290597

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.2.0-3-generic x86_64
Distribution: Linux Mint 12 Lisa

-- Information about the crash:
- What I was doing when the application crashed:
After beeing logged in for more than 4 hours with many open applications, I closed 3 sqlitebrowser instances in a row.
The desktop crashed after the third instance had been closed.

-- Backtrace:
Application: Plasma-Desktop-Umgebung (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7ff9267787a0 (LWP 1958))]

Thread 3 (Thread 0x7ff900c20700 (LWP 1959)):
#0  0x00007ff926060773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ff91a5eaf68 in g_main_context_poll (n_fds=1, fds=0x1477600, timeout=-1, context=0x103fa20, priority=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3402
#2  g_main_context_iterate (context=0x103fa20, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3084
#3  0x00007ff91a5eb429 in g_main_context_iteration (context=0x103fa20, may_block=1) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3152
#4  0x00007ff923251f3e in QEventDispatcherGlib::processEvents (this=0x14ac1a0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007ff923225cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007ff923225ef7 in QEventLoop::exec (this=0x7ff900c1fdb0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007ff92313d27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007ff923208cbf in QInotifyFileSystemWatcherEngine::run (this=0x13fe4d0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007ff92313fd05 in QThreadPrivate::start (arg=0x13fe4d0) at thread/qthread_unix.cpp:331
#10 0x00007ff91b0f7efc in start_thread (arg=0x7ff900c20700) at pthread_create.c:304
#11 0x00007ff92606c89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7ff8fbdf5700 (LWP 1960)):
#0  0x00007ff926060773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ff91a5eaf68 in g_main_context_poll (n_fds=1, fds=0x7ff8fc001970, timeout=-1, context=0x14a3620, priority=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3402
#2  g_main_context_iterate (context=0x14a3620, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3084
#3  0x00007ff91a5eb429 in g_main_context_iteration (context=0x14a3620, may_block=1) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3152
#4  0x00007ff923251f3e in QEventDispatcherGlib::processEvents (this=0x1405730, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007ff923225cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007ff923225ef7 in QEventLoop::exec (this=0x7ff8fbdf4db0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007ff92313d27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007ff923208cbf in QInotifyFileSystemWatcherEngine::run (this=0x160f7c0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007ff92313fd05 in QThreadPrivate::start (arg=0x160f7c0) at thread/qthread_unix.cpp:331
#10 0x00007ff91b0f7efc in start_thread (arg=0x7ff8fbdf5700) at pthread_create.c:304
#11 0x00007ff92606c89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ff9267787a0 (LWP 1958)):
[KCrash Handler]
#6  operator== (value=0, this=0xd) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#7  isNull (this=0x210b030) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#8  operator! (this=0x210b030) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#9  TaskManager::TaskItem::task (this=<optimized out>) at ../../../libs/taskmanager/taskitem.cpp:113
#10 0x00007ff90c8a9112 in WindowTaskItem::publishIconGeometry (this=0x219eee0) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#11 0x00007ff90c8b7b7c in AbstractTaskItem::timerEvent (this=0x219eee0, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#12 0x00007ff92323d789 in QObject::event (this=0x219eee0, e=<optimized out>) at kernel/qobject.cpp:1181
#13 0x00007ff922bf589b in QGraphicsWidget::event (this=0x219eee0, event=0x7fff31cd8ab0) at graphicsview/qgraphicswidget.cpp:1455
#14 0x00007ff9225d7424 in notify_helper (e=0x7fff31cd8ab0, receiver=0x219eee0, this=0xd64260) at kernel/qapplication.cpp:4486
#15 QApplicationPrivate::notify_helper (this=0xd64260, receiver=0x219eee0, e=0x7fff31cd8ab0) at kernel/qapplication.cpp:4458
#16 0x00007ff9225dc291 in QApplication::notify (this=0xd61ac0, receiver=0x219eee0, e=0x7fff31cd8ab0) at kernel/qapplication.cpp:4365
#17 0x00007ff923ed5126 in KApplication::notify (this=0xd61ac0, receiver=0x219eee0, event=0x7fff31cd8ab0) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007ff923226afc in QCoreApplication::notifyInternal (this=0xd61ac0, receiver=0x219eee0, event=0x7fff31cd8ab0) at kernel/qcoreapplication.cpp:787
#19 0x00007ff923253d62 in sendEvent (event=0x7fff31cd8ab0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QTimerInfoList::activateTimers (this=0xd6a8f0) at kernel/qeventdispatcher_unix.cpp:603
#21 0x00007ff923251538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#22 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#23 0x00007ff91a5eaa5d in g_main_dispatch (context=0xd6a400) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:2441
#24 g_main_context_dispatch (context=0xd6a400) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3011
#25 0x00007ff91a5eb258 in g_main_context_iterate (context=0xd6a400, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3089
#26 0x00007ff91a5eb429 in g_main_context_iteration (context=0xd6a400, may_block=1) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3152
#27 0x00007ff923251ed6 in QEventDispatcherGlib::processEvents (this=0xcd8f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#28 0x00007ff92267f07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x00007ff923225cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#30 0x00007ff923225ef7 in QEventLoop::exec (this=0x7fff31cd8d40, flags=...) at kernel/qeventloop.cpp:201
#31 0x00007ff92322a789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#32 0x00007ff92636b1a3 in kdemain (argc=1, argv=0x7fff31cd9128) at ../../../../plasma/desktop/shell/main.cpp:120
#33 0x00007ff925fac30d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff31cd9128, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff31cd9118) at libc-start.c:226
#34 0x0000000000400671 in _start ()

Possible duplicates by query: bug 290581, bug 290505, bug 290449, bug 290427, bug 290300.

Reported using DrKonqi