Bug 291241

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 did a "PrtScn" button and was saving the desktop image to the Desktop folder.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f29128847c0 (LWP 2714))]

Thread 8 (Thread 0x7f28ed1e1700 (LWP 2720)):
#0  0x00007f29066fcf3f in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f29066fddfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f29066fe429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f290f364f3e in QEventDispatcherGlib::processEvents (this=0x1844e80, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f290f338cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f290f338ef7 in QEventLoop::exec (this=0x7f28ed1e0cd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f290f25027f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f290f31bcbf in QInotifyFileSystemWatcherEngine::run (this=0x1841480) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f290f252d05 in QThreadPrivate::start (arg=0x1841480) at thread/qthread_unix.cpp:331
#9  0x00007f2903a1756c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f290720aefc in start_thread (arg=0x7f28ed1e1700) at pthread_create.c:304
#11 0x00007f291217f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f28e67f4700 (LWP 2721)):
#0  0x00007f290720e1fd in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x7f28e8000ef8) at pthread_mutex_unlock.c:290
#2  0x00007f29066fdf9a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f29066fe429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f290f364f3e in QEventDispatcherGlib::processEvents (this=0x7f28e8000dc0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f290f338cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f290f338ef7 in QEventLoop::exec (this=0x7f28e67f3cd0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f290f25027f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007f290f31bcbf in QInotifyFileSystemWatcherEngine::run (this=0x1a9cf30) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f290f252d05 in QThreadPrivate::start (arg=0x1a9cf30) at thread/qthread_unix.cpp:331
#10 0x00007f2903a1756c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#11 0x00007f290720aefc in start_thread (arg=0x7f28e67f4700) at pthread_create.c:304
#12 0x00007f291217f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f28e414a700 (LWP 11778)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f290f2531ab in wait (time=18446744073709551615, this=0x18c82d0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x18a87b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f290b04d864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x192de20, th=0x2b10c30) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f290b04fe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1891110, th=0x2b10c30) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f290b04eccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f28e4149d20, parent=0x192de20, th=0x2b10c30) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f290b04ed5b in ThreadWeaver::Thread::run (this=0x2b10c30) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f290f252d05 in QThreadPrivate::start (arg=0x2b10c30) at thread/qthread_unix.cpp:331
#8  0x00007f2903a1756c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f290720aefc in start_thread (arg=0x7f28e414a700) at pthread_create.c:304
#10 0x00007f291217f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f28e494b700 (LWP 11779)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f290f2531ab in wait (time=18446744073709551615, this=0x18c82d0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x18a87b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f290b04d864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x192de20, th=0x7f28d401ba60) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f290b04fe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1891110, th=0x7f28d401ba60) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f290b04eccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f28e494ad20, parent=0x192de20, th=0x7f28d401ba60) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f290b04ed5b in ThreadWeaver::Thread::run (this=0x7f28d401ba60) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f290f252d05 in QThreadPrivate::start (arg=0x7f28d401ba60) at thread/qthread_unix.cpp:331
#8  0x00007f2903a1756c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f290720aefc in start_thread (arg=0x7f28e494b700) at pthread_create.c:304
#10 0x00007f291217f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f28e3949700 (LWP 11780)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f290f2531ab in wait (time=18446744073709551615, this=0x18c82d0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x18a87b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f290b04d864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x192de20, th=0x27a7460) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f290b04fe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1891110, th=0x27a7460) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f290b04eccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f28e3948d20, parent=0x192de20, th=0x27a7460) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f290b04ed5b in ThreadWeaver::Thread::run (this=0x27a7460) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f290f252d05 in QThreadPrivate::start (arg=0x27a7460) at thread/qthread_unix.cpp:331
#8  0x00007f2903a1756c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f290720aefc in start_thread (arg=0x7f28e3949700) at pthread_create.c:304
#10 0x00007f291217f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f28e3148700 (LWP 11781)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f290f2531ab in wait (time=18446744073709551615, this=0x18c82d0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x18a87b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f290b04d864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x192de20, th=0x22b2f70) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f290b04fe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1891110, th=0x22b2f70) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f290b04eccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f28e3147d20, parent=0x192de20, th=0x22b2f70) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f290b04ed5b in ThreadWeaver::Thread::run (this=0x22b2f70) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f290f252d05 in QThreadPrivate::start (arg=0x22b2f70) at thread/qthread_unix.cpp:331
#8  0x00007f2903a1756c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f290720aefc in start_thread (arg=0x7f28e3148700) at pthread_create.c:304
#10 0x00007f291217f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f28d8935700 (LWP 11782)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f290f2531ab in wait (time=18446744073709551615, this=0x18c82d0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x18a87b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f290b04d864 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x192de20, th=0x2c091b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f290b04fe0b in ThreadWeaver::WorkingHardState::applyForWork (this=0x1891110, th=0x2c091b0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f290b04eccf in ThreadWeaver::ThreadRunHelper::run (this=0x7f28d8934d20, parent=0x192de20, th=0x2c091b0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f290b04ed5b in ThreadWeaver::Thread::run (this=0x2c091b0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f290f252d05 in QThreadPrivate::start (arg=0x2c091b0) at thread/qthread_unix.cpp:331
#8  0x00007f2903a1756c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x00007f290720aefc in start_thread (arg=0x7f28d8935700) at pthread_create.c:304
#10 0x00007f291217f89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f29128847c0 (LWP 2714)):
[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=0x44d69c0) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007f28f621b112 in WindowTaskItem::publishIconGeometry (this=0x2db4640) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007f28f6229b7c in AbstractTaskItem::timerEvent (this=0x2db4640, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007f290f350789 in QObject::event (this=0x2db4640, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007f290ed0889b in QGraphicsWidget::event (this=0x2db4640, event=0x7fffe6389600) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007f290e6ea424 in notify_helper (e=0x7fffe6389600, receiver=0x2db4640, this=0xa6d380) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0xa6d380, receiver=0x2db4640, e=0x7fffe6389600) at kernel/qapplication.cpp:4458
#15 0x00007f290e6ef291 in QApplication::notify (this=0xa42ca0, receiver=0x2db4640, e=0x7fffe6389600) at kernel/qapplication.cpp:4365
#16 0x00007f290ffe8126 in KApplication::notify (this=0xa42ca0, receiver=0x2db4640, event=0x7fffe6389600) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007f290f339afc in QCoreApplication::notifyInternal (this=0xa42ca0, receiver=0x2db4640, event=0x7fffe6389600) at kernel/qcoreapplication.cpp:787
#18 0x00007f290f366d62 in sendEvent (event=0x7fffe6389600, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0xa70f60) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007f290f364538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007f29066fda5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f29066fe258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f29066fe429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f290f364ed6 in QEventDispatcherGlib::processEvents (this=0x99bf40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007f290e79207e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007f290f338cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f290f338ef7 in QEventLoop::exec (this=0x7fffe6389890, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007f290f33d789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007f291247e1a3 in kdemain (argc=1, argv=0x7fffe6389c78) at ../../../../plasma/desktop/shell/main.cpp:120
#31 0x00007f29120bf30d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffe6389c78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe6389c68) at libc-start.c:226
#32 0x0000000000400671 in _start ()

Possible duplicates by query: bug 291225, bug 291218, bug 291217, bug 291212, bug 291187.

Reported using DrKonqi