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:

Closing Inkscape - but also happens randomly when closing Gimp, Firefox and other applications.  Only started a few weeks ago.  Not sure if related to installing pppoeconf - I also did that at a similar time.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7ff6a30ec7a0 (LWP 3650))]

Thread 8 (Thread 0x7ff67dfc5700 (LWP 3656)):
#0  idleTimerSourcePrepare (source=<optimized out>, timeout=0x7ff67dfc4c1c) at kernel/qeventdispatcher_glib.cpp:207
#1  0x00007ff696f58ff2 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff696f59dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff696f5a429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff69fbc0f3e in QEventDispatcherGlib::processEvents (this=0x1035190, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007ff69fb94cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007ff69fb94ef7 in QEventLoop::exec (this=0x7ff67dfc4db0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007ff69faac27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007ff69fb77cbf in QInotifyFileSystemWatcherEngine::run (this=0x1034a20) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007ff69faaed05 in QThreadPrivate::start (arg=0x1034a20) at thread/qthread_unix.cpp:331
#10 0x00007ff697a66efc in start_thread (arg=0x7ff67dfc5700) at pthread_create.c:304
#11 0x00007ff6a29db89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7ff676fbf700 (LWP 3658)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007ff676fbead0 in ?? ()
#2  0x00007fff7b9e67e7 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 6 (Thread 0x7ff6745cf700 (LWP 3661)):
#0  0x00007ff697a69034 in __pthread_mutex_lock (mutex=0x141ac88) at pthread_mutex_lock.c:61
#1  0x00007ff696f59361 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff696f59e6a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff696f5a792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff6750ad516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007ff696f7f2b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ff697a66efc in start_thread (arg=0x7ff6745cf700) at pthread_create.c:304
#7  0x00007ff6a29db89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7ff672dae700 (LWP 8859)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ff69faaf1ab in wait (time=18446744073709551615, this=0x110a440) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1102a50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007ff69b8a9864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x11a7f60, th=0x2338dc0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007ff69b8abe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1102a10, th=0x2338dc0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007ff69b8abe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1102a10, th=0x2338dc0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007ff69b8abe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1102a10, th=0x2338dc0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007ff69b8abe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1102a10, th=0x2338dc0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#8  0x00007ff69b8aaccf in ThreadWeaver::ThreadRunHelper::run (this=0x7ff672dade00, parent=0x11a7f60, th=0x2338dc0) at ../../../threadweaver/Weaver/Thread.cpp:87
#9  0x00007ff69b8aad5b in ThreadWeaver::Thread::run (this=0x2338dc0) at ../../../threadweaver/Weaver/Thread.cpp:142
#10 0x00007ff69faaed05 in QThreadPrivate::start (arg=0x2338dc0) at thread/qthread_unix.cpp:331
#11 0x00007ff697a66efc in start_thread (arg=0x7ff672dae700) at pthread_create.c:304
#12 0x00007ff6a29db89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7ff67659c700 (LWP 8860)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ff69faaf1ab in wait (time=18446744073709551615, this=0x110a440) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1102a50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007ff69b8a9864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x11a7f60, th=0x7ff67800f990) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007ff69b8abe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1102a10, th=0x7ff67800f990) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007ff69b8abe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1102a10, th=0x7ff67800f990) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007ff69b8abe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1102a10, th=0x7ff67800f990) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#7  0x00007ff69b8abe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1102a10, th=0x7ff67800f990) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#8  0x00007ff69b8abe24 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1102a10, th=0x7ff67800f990) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#9  0x00007ff69b8aaccf in ThreadWeaver::ThreadRunHelper::run (this=0x7ff67659be00, parent=0x11a7f60, th=0x7ff67800f990) at ../../../threadweaver/Weaver/Thread.cpp:87
#10 0x00007ff69b8aad5b in ThreadWeaver::Thread::run (this=0x7ff67800f990) at ../../../threadweaver/Weaver/Thread.cpp:142
#11 0x00007ff69faaed05 in QThreadPrivate::start (arg=0x7ff67800f990) at thread/qthread_unix.cpp:331
#12 0x00007ff697a66efc in start_thread (arg=0x7ff67659c700) at pthread_create.c:304
#13 0x00007ff6a29db89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7ff674dd0700 (LWP 8861)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ff69faaf1ab in wait (time=18446744073709551615, this=0x110a440) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1102a50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007ff69b8a9864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x11a7f60, th=0x936fd0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007ff69b8abe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1102a10, th=0x936fd0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007ff69b8aaccf in ThreadWeaver::ThreadRunHelper::run (this=0x7ff674dcfe00, parent=0x11a7f60, th=0x936fd0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007ff69b8aad5b in ThreadWeaver::Thread::run (this=0x936fd0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007ff69faaed05 in QThreadPrivate::start (arg=0x936fd0) at thread/qthread_unix.cpp:331
#8  0x00007ff697a66efc in start_thread (arg=0x7ff674dd0700) at pthread_create.c:304
#9  0x00007ff6a29db89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7ff66bec1700 (LWP 8862)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ff69faaf1ab in wait (time=18446744073709551615, this=0x110a440) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1102a50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007ff69b8a9864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x11a7f60, th=0x12ab890) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007ff69b8abe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1102a10, th=0x12ab890) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007ff69b8aaccf in ThreadWeaver::ThreadRunHelper::run (this=0x7ff66bec0e00, parent=0x11a7f60, th=0x12ab890) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007ff69b8aad5b in ThreadWeaver::Thread::run (this=0x12ab890) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007ff69faaed05 in QThreadPrivate::start (arg=0x12ab890) at thread/qthread_unix.cpp:331
#8  0x00007ff697a66efc in start_thread (arg=0x7ff66bec1700) at pthread_create.c:304
#9  0x00007ff6a29db89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ff6a30ec7a0 (LWP 3650)):
[KCrash Handler]
#6  isNull (this=0x0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x2694ad0) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007ff688e60112 in WindowTaskItem::publishIconGeometry (this=0x26c7560) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007ff688e6eb7c in AbstractTaskItem::timerEvent (this=0x26c7560, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007ff69fbac789 in QObject::event (this=0x26c7560, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007ff69f56489b in QGraphicsWidget::event (this=0x26c7560, event=0x7fff7b90d640) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007ff69ef46424 in notify_helper (e=0x7fff7b90d640, receiver=0x26c7560, this=0x795f20) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0x795f20, receiver=0x26c7560, e=0x7fff7b90d640) at kernel/qapplication.cpp:4458
#15 0x00007ff69ef4b291 in QApplication::notify (this=0x789ad0, receiver=0x26c7560, e=0x7fff7b90d640) at kernel/qapplication.cpp:4365
#16 0x00007ff6a0844126 in KApplication::notify (this=0x789ad0, receiver=0x26c7560, event=0x7fff7b90d640) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007ff69fb95afc in QCoreApplication::notifyInternal (this=0x789ad0, receiver=0x26c7560, event=0x7fff7b90d640) at kernel/qcoreapplication.cpp:787
#18 0x00007ff69fbc2d62 in sendEvent (event=0x7fff7b90d640, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x799960) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007ff69fbc0538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007ff696f59a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007ff696f5a258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007ff696f5a429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007ff69fbc0ed6 in QEventDispatcherGlib::processEvents (this=0x71df40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007ff69efee07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007ff69fb94cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007ff69fb94ef7 in QEventLoop::exec (this=0x7fff7b90d8d0, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007ff69fb99789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007ff6a2cda1a3 in kdemain (argc=1, argv=0x7fff7b90dcb8) at ../../../../plasma/desktop/shell/main.cpp:120
#31 0x00007ff6a291b30d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff7b90dcb8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff7b90dca8) at libc-start.c:226
#32 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 272495.

Possible duplicates by query: bug 291338, bug 291334, bug 291298, bug 291295, bug 291285.

Reported using DrKonqi