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 i686
Distribution: Ubuntu precise (development branch)

-- Information about the crash:
- What I was doing when the application crashed:
I tried  modifying desktop effects using opengl, with Thunderbird, vlc, konsole, firefox, skype loaded

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb5ca8720 (LWP 2287))]

Thread 8 (Thread 0xb4afeb70 (LWP 2289)):
#0  0x00766416 in __kernel_vsyscall ()
#1  0x063bf7ac in __lll_unlock_wake () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/lowlevellock.S:384
#2  0x063bbe07 in _L_unlock_642 () from /lib/i386-linux-gnu/libpthread.so.0
#3  0x063bbd4a in __pthread_mutex_unlock_usercnt (mutex=0x44b2320, decr=1) at pthread_mutex_unlock.c:52
#4  0x00da4f64 in pthread_mutex_unlock (mutex=0x44b2320) at forward.c:184
#5  0x0447000f in ?? () from /usr/lib/nvidia-current/libGL.so.1
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 7 (Thread 0xadd8eb70 (LWP 2291)):
#0  0x00766416 in __kernel_vsyscall ()
#1  0x063bf619 in __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/lowlevellock.S:142
#2  0x063baf8b in _L_lock_786 () from /lib/i386-linux-gnu/libpthread.so.0
#3  0x063bae45 in __pthread_mutex_lock (mutex=0x44b2320) at pthread_mutex_lock.c:82
#4  0x00da4f24 in pthread_mutex_lock (mutex=0x44b2320) at forward.c:182
#5  0x044701c1 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 6 (Thread 0xab803b70 (LWP 2301)):
#0  0x044701c7 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 5 (Thread 0xab002b70 (LWP 5100)):
#0  0x00766416 in __kernel_vsyscall ()
#1  0x063bca5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x00da4d0c in __pthread_cond_wait (cond=0x8b35aa8, mutex=0x8b35a90) at forward.c:139
#3  0x06004a50 in wait (time=4294967295, this=0x8b35a90) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x8b32e18, mutex=0x8acde68, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x005ed406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x8b32e00, th=0x97402b8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x005efecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x8ace178, th=0x97402b8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x005ed03a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x8b32e00, th=0x97402b8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x005effcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x8ace178, th=0x97402b8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x005ecf93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x8b32e00, th=0x97402b8, previous=0xad41c168) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x005eeb14 in ThreadWeaver::ThreadRunHelper::run (this=0xab002254, parent=0x8b32e00, th=0x97402b8) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x005eebca in ThreadWeaver::Thread::run (this=0x97402b8) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x06004543 in QThreadPrivate::start (arg=0x97402b8) at thread/qthread_unix.cpp:331
#13 0x0447370c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#14 0x00000000 in ?? ()

Thread 4 (Thread 0xac805b70 (LWP 5101)):
#0  0x00766416 in __kernel_vsyscall ()
#1  0x063bca5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x00da4d0c in __pthread_cond_wait (cond=0x8b35aa8, mutex=0x8b35a90) at forward.c:139
#3  0x06004a50 in wait (time=4294967295, this=0x8b35a90) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x8b32e18, mutex=0x8acde68, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x005ed406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x8b32e00, th=0x8d56120) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x005efecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x8ace178, th=0x8d56120) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x005ed03a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x8b32e00, th=0x8d56120) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x005effcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x8ace178, th=0x8d56120) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x005ecf93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x8b32e00, th=0x8d56120, previous=0xad41d4d8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x005eeb14 in ThreadWeaver::ThreadRunHelper::run (this=0xac805254, parent=0x8b32e00, th=0x8d56120) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x005eebca in ThreadWeaver::Thread::run (this=0x8d56120) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x06004543 in QThreadPrivate::start (arg=0x8d56120) at thread/qthread_unix.cpp:331
#13 0x0447370c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#14 0x00000000 in ?? ()

Thread 3 (Thread 0xac004b70 (LWP 5102)):
#0  0x00766416 in __kernel_vsyscall ()
#1  0x063bca5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x00da4d0c in __pthread_cond_wait (cond=0x8b35aa8, mutex=0x8b35a90) at forward.c:139
#3  0x06004a50 in wait (time=4294967295, this=0x8b35a90) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x8b32e18, mutex=0x8acde68, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x005ed406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x8b32e00, th=0x9b2da58) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x005efecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x8ace178, th=0x9b2da58) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x005ed03a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x8b32e00, th=0x9b2da58) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x005effcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x8ace178, th=0x9b2da58) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x005ecf93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x8b32e00, th=0x9b2da58, previous=0xad421aa0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x005eeb14 in ThreadWeaver::ThreadRunHelper::run (this=0xac004254, parent=0x8b32e00, th=0x9b2da58) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x005eebca in ThreadWeaver::Thread::run (this=0x9b2da58) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x06004543 in QThreadPrivate::start (arg=0x9b2da58) at thread/qthread_unix.cpp:331
#13 0x0447370c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#14 0x00000000 in ?? ()

Thread 2 (Thread 0xa9eeeb70 (LWP 5103)):
#0  0x00766416 in __kernel_vsyscall ()
#1  0x063bca5c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x00da4d0c in __pthread_cond_wait (cond=0x8b35aa8, mutex=0x8b35a90) at forward.c:139
#3  0x06004a50 in wait (time=4294967295, this=0x8b35a90) at thread/qwaitcondition_unix.cpp:88
#4  QWaitCondition::wait (this=0x8b32e18, mutex=0x8acde68, time=4294967295) at thread/qwaitcondition_unix.cpp:160
#5  0x005ed406 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x8b32e00, th=0x8a87e90) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#6  0x005efecb in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x8ace178, th=0x8a87e90) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#7  0x005ed03a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x8b32e00, th=0x8a87e90) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#8  0x005effcc in ThreadWeaver::WorkingHardState::applyForWork (this=0x8ace178, th=0x8a87e90) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#9  0x005ecf93 in ThreadWeaver::WeaverImpl::applyForWork (this=0x8b32e00, th=0x8a87e90, previous=0xad419e98) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#10 0x005eeb14 in ThreadWeaver::ThreadRunHelper::run (this=0xa9eee254, parent=0x8b32e00, th=0x8a87e90) at ../../../threadweaver/Weaver/Thread.cpp:87
#11 0x005eebca in ThreadWeaver::Thread::run (this=0x8a87e90) at ../../../threadweaver/Weaver/Thread.cpp:142
#12 0x06004543 in QThreadPrivate::start (arg=0x8a87e90) at thread/qthread_unix.cpp:331
#13 0x0447370c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#14 0x00000000 in ?? ()

Thread 1 (Thread 0xb5ca8720 (LWP 2287)):
[KCrash Handler]
#7  operator== (value=0, this=0x9) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#8  isNull (this=0xa435060) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#9  operator! (this=0xa435060) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#10 TaskManager::TaskItem::task (this=0x8aa91e8) at ../../../libs/taskmanager/taskitem.cpp:113
#11 0x06e01662 in WindowTaskItem::publishIconGeometry (this=0x96ff640) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#12 0x06e12688 in AbstractTaskItem::timerEvent (this=0x96ff640, event=0xbfedc32c) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#13 0x061175f4 in QObject::event (this=0x96ff640, e=0xbfedc32c) at kernel/qobject.cpp:1181
#14 0x01afdff4 in QGraphicsWidget::event (this=0x96ff640, event=0xbfedc32c) at graphicsview/qgraphicswidget.cpp:1455
#15 0x0143f0d4 in notify_helper (e=0xbfedc32c, receiver=0x96ff640, this=0x84984c8) at kernel/qapplication.cpp:4486
#16 QApplicationPrivate::notify_helper (this=0x84984c8, receiver=0x96ff640, e=0xbfedc32c) at kernel/qapplication.cpp:4458
#17 0x01444483 in QApplication::notify (this=0xbfedc32c, receiver=0x96ff640, e=0xbfedc32c) at kernel/qapplication.cpp:3886
#18 0x010ba681 in KApplication::notify (this=0x8481900, receiver=0x96ff640, event=0xbfedc32c) at ../../kdeui/kernel/kapplication.cpp:311
#19 0x060fef6e in QCoreApplication::notifyInternal (this=0x8481900, receiver=0x96ff640, event=0xbfedc32c) at kernel/qcoreapplication.cpp:787
#20 0x0612f870 in sendEvent (event=0xbfedc32c, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#21 QTimerInfoList::activateTimers (this=0x849847c) at kernel/qeventdispatcher_unix.cpp:603
#22 0x0612cd82 in timerSourceDispatch (source=0x8498448) at kernel/qeventdispatcher_glib.cpp:184
#23 0x0416669a in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#24 0x04166aa5 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#25 0x04166b81 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#26 0x0612d73a in QEventDispatcherGlib::processEvents (this=0x8403218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#27 0x014f71ba in QGuiEventDispatcherGlib::processEvents (this=0x8403218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#28 0x060fdfad in QEventLoop::processEvents (this=0xbfedc594, flags=...) at kernel/qeventloop.cpp:149
#29 0x060fe1f1 in QEventLoop::exec (this=0xbfedc594, flags=...) at kernel/qeventloop.cpp:201
#30 0x06102dfd in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#31 0x0143cc74 in QApplication::exec () at kernel/qapplication.cpp:3760
#32 0x007e418b in kdemain (argc=1, argv=0xbfedc794) at ../../../../plasma/desktop/shell/main.cpp:120
#33 0x0804850b in main (argc=1, argv=0xbfedc794) at plasma-desktop_dummy.cpp:3

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

Possible duplicates by query: bug 288260, bug 288054, bug 287611, bug 287588, bug 287545.

Reported using DrKonqi