Bug 291854

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:
I was working on gvim and had just closed the app as the defect happened.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f56264fc7a0 (LWP 1576))]

Thread 4 (Thread 0x7f56061bf700 (LWP 1612)):
#0  0x00007f561ae6c034 in __pthread_mutex_lock (mutex=0x1ff4438) at pthread_mutex_lock.c:61
#1  0x00007f561a35c023 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f561a35cdfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f561a35d429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5622fc3f3e in QEventDispatcherGlib::processEvents (this=0x1ff3940, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f5622f97cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f5622f97ef7 in QEventLoop::exec (this=0x7f56061bedb0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f5622eaf27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007f5622f7acbf in QInotifyFileSystemWatcherEngine::run (this=0x1ff21e0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f5622eb1d05 in QThreadPrivate::start (arg=0x1ff21e0) at thread/qthread_unix.cpp:331
#10 0x00007f561ae69efc in start_thread (arg=0x7f56061bf700) at pthread_create.c:304
#11 0x00007f5625dde89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f55f920f700 (LWP 1665)):
#0  0x00007f561ae6d1fd in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x28da6b8) at pthread_mutex_unlock.c:290
#2  0x00007f561a35bf3f in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f561a35cdfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f561a35d792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f55f9ced516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007f561a3822b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f561ae69efc in start_thread (arg=0x7f55f920f700) at pthread_create.c:304
#8  0x00007f5625dde89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f55f6df7700 (LWP 1666)):
#0  0x00007f5625dd2773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f561a35cf68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f561a35d429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5622fc3f3e in QEventDispatcherGlib::processEvents (this=0x297acf0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f5622f97cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f5622f97ef7 in QEventLoop::exec (this=0x7f55f6df6db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f5622eaf27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f5622f7acbf in QInotifyFileSystemWatcherEngine::run (this=0x2981f00) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f5622eb1d05 in QThreadPrivate::start (arg=0x2981f00) at thread/qthread_unix.cpp:331
#9  0x00007f561ae69efc in start_thread (arg=0x7f55f6df7700) at pthread_create.c:304
#10 0x00007f5625dde89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f56264fc7a0 (LWP 1576)):
[KCrash Handler]
#6  isNull (this=0x4d0000) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x4d0000) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x3a876c0) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007f560c997112 in WindowTaskItem::publishIconGeometry (this=0x42852b0) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007f560c9a5b7c in AbstractTaskItem::timerEvent (this=0x42852b0, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007f5622faf789 in QObject::event (this=0x42852b0, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007f562296789b in QGraphicsWidget::event (this=0x42852b0, event=0x7ffff1989f40) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007f5622349424 in notify_helper (e=0x7ffff1989f40, receiver=0x42852b0, this=0x16cc340) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0x16cc340, receiver=0x42852b0, e=0x7ffff1989f40) at kernel/qapplication.cpp:4458
#15 0x00007f562234e291 in QApplication::notify (this=0x16bc480, receiver=0x42852b0, e=0x7ffff1989f40) at kernel/qapplication.cpp:4365
#16 0x00007f5623c47126 in KApplication::notify (this=0x16bc480, receiver=0x42852b0, event=0x7ffff1989f40) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007f5622f98afc in QCoreApplication::notifyInternal (this=0x16bc480, receiver=0x42852b0, event=0x7ffff1989f40) at kernel/qcoreapplication.cpp:787
#18 0x00007f5622fc5d62 in sendEvent (event=0x7ffff1989f40, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x16cb840) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007f5622fc3538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007f561a35ca5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f561a35d258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f561a35d429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f5622fc3ed6 in QEventDispatcherGlib::processEvents (this=0x165cf40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007f56223f107e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007f5622f97cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f5622f97ef7 in QEventLoop::exec (this=0x7ffff198a1d0, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007f5622f9c789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007f56260dd1a3 in kdemain (argc=1, argv=0x7ffff198a5b8) at ../../../../plasma/desktop/shell/main.cpp:120
#31 0x00007f5625d1e30d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7ffff198a5b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffff198a5a8) at libc-start.c:226
#32 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 287014.

Possible duplicates by query: bug 291848, bug 291787, bug 291785, bug 291780, bug 291755.

Reported using DrKonqi