Bug 291619

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-14-generic x86_64
Distribution: Ubuntu 11.10

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

Right-click on the Skype icon in the tray and closed Skype.  Immediately, as Skype closed, Plasma crashed.  It may be that Skype crashed and took Plasma down with it, but I have no way of telling as I was already closing Skype.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f89f666d7a0 (LWP 2390))]

Thread 4 (Thread 0x7f89da3dc700 (LWP 2391)):
#0  0x00007f89f5f4f773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f89ea4d9f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f89ea4da429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f89f3140f3e in QEventDispatcherGlib::processEvents (this=0x2a6dcd0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f89f3114cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f89f3114ef7 in QEventLoop::exec (this=0x7f89da3dbdb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f89f302c27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f89f30f7cbf in QInotifyFileSystemWatcherEngine::run (this=0x2a6ba00) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f89f302ed05 in QThreadPrivate::start (arg=0x2a6ba00) at thread/qthread_unix.cpp:331
#9  0x00007f89eafe6efc in start_thread (arg=0x7f89da3dc700) at pthread_create.c:304
#10 0x00007f89f5f5b89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f89cc2b3700 (LWP 2394)):
#0  0x00007f89eafea1fd in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x2f51568) at pthread_mutex_unlock.c:290
#2  0x00007f89ea4d8fe4 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f89ea4d9dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f89ea4da429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f89f3140f3e in QEventDispatcherGlib::processEvents (this=0x2f2d270, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f89f3114cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f89f3114ef7 in QEventLoop::exec (this=0x7f89cc2b2db0, flags=...) at kernel/qeventloop.cpp:201
#8  0x00007f89f302c27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#9  0x00007f89f30f7cbf in QInotifyFileSystemWatcherEngine::run (this=0x2f2c1a0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f89f302ed05 in QThreadPrivate::start (arg=0x2f2c1a0) at thread/qthread_unix.cpp:331
#11 0x00007f89eafe6efc in start_thread (arg=0x7f89cc2b3700) at pthread_create.c:304
#12 0x00007f89f5f5b89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f89c9064700 (LWP 2400)):
#0  0x00007f89f5f4f773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f89ea4d9f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f89ea4da792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f89c9b42516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f89ea4ff2b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f89eafe6efc in start_thread (arg=0x7f89c9064700) at pthread_create.c:304
#6  0x00007f89f5f5b89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f89f666d7a0 (LWP 2390)):
[KCrash Handler]
#6  operator== (value=0, this=0x2020202020200a71) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#7  isNull (this=0x300000f) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#8  operator! (this=0x300000f) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#9  TaskManager::TaskItem::task (this=<optimized out>) at ../../../libs/taskmanager/taskitem.cpp:113
#10 0x00007f89dca04112 in WindowTaskItem::publishIconGeometry (this=0x44484f0) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#11 0x00007f89dca12b7c in AbstractTaskItem::timerEvent (this=0x44484f0, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#12 0x00007f89f312c789 in QObject::event (this=0x44484f0, e=<optimized out>) at kernel/qobject.cpp:1181
#13 0x00007f89f2ae489b in QGraphicsWidget::event (this=0x44484f0, event=0x7fffe5bacd20) at graphicsview/qgraphicswidget.cpp:1455
#14 0x00007f89f24c6424 in notify_helper (e=0x7fffe5bacd20, receiver=0x44484f0, this=0x2117ee0) at kernel/qapplication.cpp:4486
#15 QApplicationPrivate::notify_helper (this=0x2117ee0, receiver=0x44484f0, e=0x7fffe5bacd20) at kernel/qapplication.cpp:4458
#16 0x00007f89f24cb291 in QApplication::notify (this=0x210ada0, receiver=0x44484f0, e=0x7fffe5bacd20) at kernel/qapplication.cpp:4365
#17 0x00007f89f3dc4126 in KApplication::notify (this=0x210ada0, receiver=0x44484f0, event=0x7fffe5bacd20) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007f89f3115afc in QCoreApplication::notifyInternal (this=0x210ada0, receiver=0x44484f0, event=0x7fffe5bacd20) at kernel/qcoreapplication.cpp:787
#19 0x00007f89f3142d62 in sendEvent (event=0x7fffe5bacd20, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QTimerInfoList::activateTimers (this=0x2113380) at kernel/qeventdispatcher_unix.cpp:603
#21 0x00007f89f3140538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#22 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#23 0x00007f89ea4d9a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f89ea4da258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f89ea4da429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f89f3140f3e in QEventDispatcherGlib::processEvents (this=0x209ff40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#27 0x00007f89f256e07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#28 0x00007f89f3114cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#29 0x00007f89f3114ef7 in QEventLoop::exec (this=0x7fffe5bacfb0, flags=...) at kernel/qeventloop.cpp:201
#30 0x00007f89f3119789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#31 0x00007f89f625a1a3 in kdemain (argc=1, argv=0x7fffe5bad398) at ../../../../plasma/desktop/shell/main.cpp:120
#32 0x00007f89f5e9b30d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffe5bad398, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe5bad388) at libc-start.c:226
#33 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 288759.

Possible duplicates by query: bug 291569, bug 291530, bug 291439, bug 291392, bug 291377.

Reported using DrKonqi