Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.5 (KDE 4.4.5) (Compiled from sources)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-28-generic i686
Distribution: Ubuntu 10.04.2 LTS

-- Information about the crash:
When moving the taskbar to the top of the screen, from the bottom, plasma desktop crashes to black screen.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7781aa0 (LWP 14244))]

Thread 7 (Thread 0xac655b70 (LWP 14313)):
#0  0x0063d422 in __kernel_vsyscall ()
#1  0x0046b015 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x01dffc97 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x1ed91a0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2304
#3  0x01dffce1 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x1ed91a0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1438
#4  0x0046696e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0x065c3a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 6 (Thread 0xaa979b70 (LWP 14318)):
#0  0x00468f5b in pthread_mutex_lock () from /lib/tls/i686/cmov/libpthread.so.0
#1  0x02abdb03 in g_main_context_prepare () from /lib/libglib-2.0.so.0
#2  0x02abdee9 in ?? () from /lib/libglib-2.0.so.0
#3  0x02abe4b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#4  0x0117060f in QEventDispatcherGlib::processEvents (this=0x975cb90, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#5  0x01143059 in QEventLoop::processEvents (this=0xaa979290, flags=) at kernel/qeventloop.cpp:149
#6  0x011434aa in QEventLoop::exec (this=0xaa979290, flags=...) at kernel/qeventloop.cpp:201
#7  0x0103f5a8 in QThread::exec (this=0x9706ad0) at thread/qthread.cpp:487
#8  0x01122c1b in QInotifyFileSystemWatcherEngine::run (this=0x9706ad0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x0104232e in QThreadPrivate::start (arg=0x9706ad0) at thread/qthread_unix.cpp:248
#10 0x0046696e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#11 0x065c3a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 5 (Thread 0xa9977b70 (LWP 15006)):
#0  0x0063d422 in __kernel_vsyscall ()
#1  0x0046b015 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x01043287 in QWaitConditionPrivate::wait (this=0x973ff10, mutex=0x9793140, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#3  QWaitCondition::wait (this=0x973ff10, mutex=0x9793140, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#4  0x06e1b870 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x973fef8, th=0x9909f10) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#5  0x06e1e38c in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x97401e0, th=0x9909f10) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#6  0x06e1a27b in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x973fef8, th=0x9909f10) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#7  0x06e1e482 in ThreadWeaver::WorkingHardState::applyForWork (this=0x97401e0, th=0x9909f10) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#8  0x06e1b4d3 in ThreadWeaver::WeaverImpl::applyForWork (this=0x973fef8, th=0x9909f10, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#9  0x06e1e4a1 in ThreadWeaver::WorkingHardState::applyForWork (this=0x97401e0, th=0x9909f10) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#10 0x06e1b4d3 in ThreadWeaver::WeaverImpl::applyForWork (this=0x973fef8, th=0x9909f10, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#11 0x06e1e4a1 in ThreadWeaver::WorkingHardState::applyForWork (this=0x97401e0, th=0x9909f10) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#12 0x06e1b4d3 in ThreadWeaver::WeaverImpl::applyForWork (this=0x973fef8, th=0x9909f10, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#13 0x06e1e4a1 in ThreadWeaver::WorkingHardState::applyForWork (this=0x97401e0, th=0x9909f10) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#14 0x06e1b4d3 in ThreadWeaver::WeaverImpl::applyForWork (this=0x973fef8, th=0x9909f10, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#15 0x06e1e4a1 in ThreadWeaver::WorkingHardState::applyForWork (this=0x97401e0, th=0x9909f10) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#16 0x06e1b4d3 in ThreadWeaver::WeaverImpl::applyForWork (this=0x973fef8, th=0x9909f10, previous=0x939a6b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#17 0x06e1c51e in ThreadWeaver::ThreadRunHelper::run (this=0xa99772f4, parent=0x973fef8, th=0x9909f10) at ../../../threadweaver/Weaver/Thread.cpp:87
#18 0x06e1cc3b in ThreadWeaver::Thread::run (this=0x9909f10) at ../../../threadweaver/Weaver/Thread.cpp:142
#19 0x0104232e in QThreadPrivate::start (arg=0x9909f10) at thread/qthread_unix.cpp:248
#20 0x0046696e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#21 0x065c3a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 4 (Thread 0xaa178b70 (LWP 15007)):
#0  0x0063d422 in __kernel_vsyscall ()
#1  0x0046b015 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x01043287 in QWaitConditionPrivate::wait (this=0x973ff10, mutex=0x9793140, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#3  QWaitCondition::wait (this=0x973ff10, mutex=0x9793140, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#4  0x06e1b870 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x973fef8, th=0x94c1810) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#5  0x06e1e38c in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x97401e0, th=0x94c1810) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#6  0x06e1a27b in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x973fef8, th=0x94c1810) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#7  0x06e1e482 in ThreadWeaver::WorkingHardState::applyForWork (this=0x97401e0, th=0x94c1810) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#8  0x06e1b4d3 in ThreadWeaver::WeaverImpl::applyForWork (this=0x973fef8, th=0x94c1810, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#9  0x06e1e4a1 in ThreadWeaver::WorkingHardState::applyForWork (this=0x97401e0, th=0x94c1810) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#10 0x06e1b4d3 in ThreadWeaver::WeaverImpl::applyForWork (this=0x973fef8, th=0x94c1810, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#11 0x06e1e4a1 in ThreadWeaver::WorkingHardState::applyForWork (this=0x97401e0, th=0x94c1810) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#12 0x06e1b4d3 in ThreadWeaver::WeaverImpl::applyForWork (this=0x973fef8, th=0x94c1810, previous=0x9ea4068) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#13 0x06e1c51e in ThreadWeaver::ThreadRunHelper::run (this=0xaa1782f4, parent=0x973fef8, th=0x94c1810) at ../../../threadweaver/Weaver/Thread.cpp:87
#14 0x06e1cc3b in ThreadWeaver::Thread::run (this=0x94c1810) at ../../../threadweaver/Weaver/Thread.cpp:142
#15 0x0104232e in QThreadPrivate::start (arg=0x94c1810) at thread/qthread_unix.cpp:248
#16 0x0046696e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#17 0x065c3a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 3 (Thread 0xa7e32b70 (LWP 15008)):
#0  0x0063d422 in __kernel_vsyscall ()
#1  0x0046b015 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x01043287 in QWaitConditionPrivate::wait (this=0x973ff10, mutex=0x9793140, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#3  QWaitCondition::wait (this=0x973ff10, mutex=0x9793140, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#4  0x06e1b870 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x973fef8, th=0x9295c98) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#5  0x06e1e38c in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x97401e0, th=0x9295c98) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#6  0x06e1a27b in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x973fef8, th=0x9295c98) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#7  0x06e1e482 in ThreadWeaver::WorkingHardState::applyForWork (this=0x97401e0, th=0x9295c98) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#8  0x06e1b4d3 in ThreadWeaver::WeaverImpl::applyForWork (this=0x973fef8, th=0x9295c98, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#9  0x06e1e4a1 in ThreadWeaver::WorkingHardState::applyForWork (this=0x97401e0, th=0x9295c98) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#10 0x06e1b4d3 in ThreadWeaver::WeaverImpl::applyForWork (this=0x973fef8, th=0x9295c98, previous=0xa601df0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#11 0x06e1c51e in ThreadWeaver::ThreadRunHelper::run (this=0xa7e322f4, parent=0x973fef8, th=0x9295c98) at ../../../threadweaver/Weaver/Thread.cpp:87
#12 0x06e1cc3b in ThreadWeaver::Thread::run (this=0x9295c98) at ../../../threadweaver/Weaver/Thread.cpp:142
#13 0x0104232e in QThreadPrivate::start (arg=0x9295c98) at thread/qthread_unix.cpp:248
#14 0x0046696e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#15 0x065c3a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa73ffb70 (LWP 15009)):
#0  0x0063d422 in __kernel_vsyscall ()
#1  0x0046b015 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x01043287 in QWaitConditionPrivate::wait (this=0x973ff10, mutex=0x9793140, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#3  QWaitCondition::wait (this=0x973ff10, mutex=0x9793140, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#4  0x06e1b870 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x973fef8, th=0x98ae000) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#5  0x06e1e38c in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x97401e0, th=0x98ae000) at ../../../threadweaver/Weaver/WorkingHardState.cpp:80
#6  0x06e1a27b in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x973fef8, th=0x98ae000) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#7  0x06e1e482 in ThreadWeaver::WorkingHardState::applyForWork (this=0x97401e0, th=0x98ae000) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#8  0x06e1b4d3 in ThreadWeaver::WeaverImpl::applyForWork (this=0x973fef8, th=0x98ae000, previous=0x9d987b0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:351
#9  0x06e1c51e in ThreadWeaver::ThreadRunHelper::run (this=0xa73ff2f4, parent=0x973fef8, th=0x98ae000) at ../../../threadweaver/Weaver/Thread.cpp:87
#10 0x06e1cc3b in ThreadWeaver::Thread::run (this=0x98ae000) at ../../../threadweaver/Weaver/Thread.cpp:142
#11 0x0104232e in QThreadPrivate::start (arg=0x98ae000) at thread/qthread_unix.cpp:248
#12 0x0046696e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#13 0x065c3a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb7781aa0 (LWP 14244)):
[KCrash Handler]
#6  0x066e663a in PanelAppletOverlay::mouseMoveEvent (this=0x9d61568, event=0xbf8a0c20) at ../../../../plasma/desktop/shell/panelappletoverlay.cpp:350
#7  0x0386a69a in QWidget::event (this=0x9d61568, event=0xbf8a0c20) at kernel/qwidget.cpp:7983
#8  0x0380c4dc in QApplicationPrivate::notify_helper (this=0x91cd3f8, receiver=0x9d61568, e=0xbf8a0c20) at kernel/qapplication.cpp:4300
#9  0x038139f7 in QApplication::notify (this=0x91c7230, receiver=0x9d61568, e=0xbf8a0c20) at kernel/qapplication.cpp:3865
#10 0x00e0440a in KApplication::notify (this=0x91c7230, receiver=0x9d61568, event=0xbf8a0c20) at ../../kdeui/kernel/kapplication.cpp:302
#11 0x01144a3b in QCoreApplication::notifyInternal (this=0x91c7230, receiver=0x9d61568, event=0xbf8a0c20) at kernel/qcoreapplication.cpp:704
#12 0x03812952 in QCoreApplication::sendEvent (receiver=0x9d61568, event=0xbf8a0c20, alienWidget=0x0, nativeWidget=0x96ee9d0, buttonDown=0x4150058, lastMouseReceiver=..., spontaneous=true)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#13 QApplicationPrivate::sendMouseEvent (receiver=0x9d61568, event=0xbf8a0c20, alienWidget=0x0, nativeWidget=0x96ee9d0, buttonDown=0x4150058, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:2965
#14 0x0389e088 in QETWidget::translateMouseEvent (this=0x96ee9d0, event=0xbf8a113c) at kernel/qapplication_x11.cpp:4368
#15 0x0389d511 in QApplication::x11ProcessEvent (this=0x91c7230, event=0xbf8a113c) at kernel/qapplication_x11.cpp:3379
#16 0x038cc60a in x11EventSourceDispatch (s=0x91d00e8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#17 0x02aba5e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#18 0x02abe2d8 in ?? () from /lib/libglib-2.0.so.0
#19 0x02abe4b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#20 0x011705d5 in QEventDispatcherGlib::processEvents (this=0x91cd0c8, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#21 0x038cc135 in QGuiEventDispatcherGlib::processEvents (this=0x91cd0c8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#22 0x01143059 in QEventLoop::processEvents (this=0xbf8a1434, flags=) at kernel/qeventloop.cpp:149
#23 0x011434aa in QEventLoop::exec (this=0xbf8a1434, flags=...) at kernel/qeventloop.cpp:201
#24 0x0114769f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#25 0x0380c577 in QApplication::exec () at kernel/qapplication.cpp:3579
#26 0x066d405e in kdemain (argc=1, argv=0x91b1b70) at ../../../../plasma/desktop/shell/main.cpp:112
#27 0x0804e133 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x9181c80 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051465 "0") at ../../kinit/kinit.cpp:717
#28 0x0804ec6d in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1209
#29 0x0804f190 in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1402
#30 0x0804fe4f in main (argc=4, argv=0xbf8a1ee4, envp=0xbf8a1ef8) at ../../kinit/kinit.cpp:1845

This bug may be a duplicate of or related to bug 246683.

Possible duplicates by query: bug 264870, bug 261352, bug 259932, bug 259464, bug 259011.

Reported using DrKonqi