Bug 240541

Application: plasma-netbook (0.1)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-22-generic i686
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
When launching an application using a shortcut on the Search and Launch Containment activity Plasma sometimes crashes. This seems to happen more often immediately after a reboot/login, but does not occur every time after a reboot/login.

Using Kubuntu 10.04 Netbook Edition.

The crash can be reproduced some of the time.

 -- Backtrace:
Application: Plasma Netbook (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb776daa0 (LWP 1486))]

Thread 3 (Thread 0xa9eeeb70 (LWP 1513)):
#0  0x0042c422 in __kernel_vsyscall ()
#1  0x085c0b86 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0x01bbe4eb in IA__g_poll (fds=0x92af1a8, nfds=1, timeout=-1) at /build/buildd/glib2.0-2.24.1/glib/gpoll.c:127
#3  0x01bb10ac in g_main_context_poll (context=0x92adc80, block=<value optimized out>, dispatch=1, self=0x92af180) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2904
#4  g_main_context_iterate (context=0x92adc80, block=<value optimized out>, dispatch=1, self=0x92af180) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2586
#5  0x01bb14b8 in IA__g_main_context_iteration (context=0x92adc80, may_block=1) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2654
#6  0x00ee560f in QEventDispatcherGlib::processEvents (this=0x91ce8b0, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#7  0x00eb8059 in QEventLoop::processEvents (this=0xa9eee290, flags=) at kernel/qeventloop.cpp:149
#8  0x00eb84aa in QEventLoop::exec (this=0xa9eee290, flags=...) at kernel/qeventloop.cpp:201
#9  0x00db45a8 in QThread::exec (this=0x92a88c8) at thread/qthread.cpp:487
#10 0x00e97c1b in QInotifyFileSystemWatcherEngine::run (this=0x92a88c8) at io/qfilesystemwatcher_inotify.cpp:248
#11 0x00db732e in QThreadPrivate::start (arg=0x92a88c8) at thread/qthread_unix.cpp:248
#12 0x0039696e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#13 0x085cea4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa96edb70 (LWP 1516)):
#0  0x0042c422 in __kernel_vsyscall ()
#1  0x0039b015 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb685d9d7 in WTF::TCMalloc_PageHeap::scavengerThread (this=0xb7606da0) at ../JavaScriptCore/wtf/FastMalloc.cpp:2299
#3  0xb685da21 in WTF::TCMalloc_PageHeap::runScavengerThread (context=0xb7606da0) at ../JavaScriptCore/wtf/FastMalloc.cpp:1433
#4  0x0039696e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0x085cea4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb776daa0 (LWP 1486)):
[KCrash Handler]
#6  0x017a7dc0 in QGraphicsScenePrivate::setFocusItemHelper (this=0x8e3fe08, item=0x90934f0, focusReason=Qt::MouseFocusReason) at graphicsview/qgraphicsscene.cpp:804
#7  0x0176b641 in QGraphicsItemPrivate::setFocusHelper (this=0x9093968, focusReason=Qt::MouseFocusReason, climb=true) at graphicsview/qgraphicsitem.cpp:3156
#8  0x0176b7af in QGraphicsItem::setFocus (this=0x90934f0, focusReason=Qt::MouseFocusReason) at graphicsview/qgraphicsitem.cpp:3107
#9  0x017a7f7e in QGraphicsScene::setFocusItem (this=0x8e3f2c8, item=0x0, focusReason=153693488) at graphicsview/qgraphicsscene.cpp:2972
#10 0x017abb05 in QGraphicsScenePrivate::mousePressEventHandler (this=0x8e3fe08, mouseEvent=0xbfbfe5b4) at graphicsview/qgraphicsscene.cpp:1309
#11 0x017ac01d in QGraphicsScene::mousePressEvent (this=0x8e3f2c8, mouseEvent=0xbfbfe5b4) at graphicsview/qgraphicsscene.cpp:4003
#12 0x017b06f4 in QGraphicsScene::event (this=0x8e3f2c8, event=0xbfbfe5b4) at graphicsview/qgraphicsscene.cpp:3395
#13 0x011044dc in QApplicationPrivate::notify_helper (this=0x8d265d8, receiver=0x8e3f2c8, e=0xbfbfe5b4) at kernel/qapplication.cpp:4300
#14 0x0110b05e in QApplication::notify (this=0x8d2e420, receiver=0x8e3f2c8, e=0xbfbfe5b4) at kernel/qapplication.cpp:3704
#15 0x0073df2a in KApplication::notify (this=0x8d2e420, receiver=0x8e3f2c8, event=0xbfbfe5b4) at ../../kdeui/kernel/kapplication.cpp:302
#16 0x00eb9a3b in QCoreApplication::notifyInternal (this=0x8d2e420, receiver=0x8e3f2c8, event=0xbfbfe5b4) at kernel/qcoreapplication.cpp:704
#17 0x011052be in QCoreApplication::sendSpontaneousEvent (receiver=0x8e3f2c8, event=0x9292de8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#18 qt_sendSpontaneousEvent (receiver=0x8e3f2c8, event=0x9292de8) at kernel/qapplication.cpp:5279
#19 0x017d24f5 in QGraphicsView::mousePressEvent (this=0x8e732e8, event=0xbfbfed20) at graphicsview/qgraphicsview.cpp:3085
#20 0x011627dc in QWidget::event (this=0x8e732e8, event=0xbfbfed20) at kernel/qwidget.cpp:7994
#21 0x0155efd3 in QFrame::event (this=0x8e732e8, e=0xbfbfed20) at widgets/qframe.cpp:557
#22 0x015f9382 in QAbstractScrollArea::viewportEvent (this=0x9292d30, e=0x9292de8) at widgets/qabstractscrollarea.cpp:1036
#23 0x017cf06b in QGraphicsView::viewportEvent (this=0x8e732e8, event=0xbfbfed20) at graphicsview/qgraphicsview.cpp:2787
#24 0x015fbc65 in QAbstractScrollAreaPrivate::viewportEvent (this=0x8e35750, o=0x8e722a0, e=0xbfbfed20) at widgets/qabstractscrollarea_p.h:100
#25 QAbstractScrollAreaFilter::eventFilter (this=0x8e35750, o=0x8e722a0, e=0xbfbfed20) at widgets/qabstractscrollarea_p.h:116
#26 0x00eb8cda in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x8d265d8, receiver=0x8e722a0, event=0xbfbfed20) at kernel/qcoreapplication.cpp:819
#27 0x011044b9 in QApplicationPrivate::notify_helper (this=0x8d265d8, receiver=0x8e722a0, e=0xbfbfed20) at kernel/qapplication.cpp:4296
#28 0x0110b9f7 in QApplication::notify (this=0x8d2e420, receiver=0x8e722a0, e=0xbfbfed20) at kernel/qapplication.cpp:3865
#29 0x0073df2a in KApplication::notify (this=0x8d2e420, receiver=0x8e722a0, event=0xbfbfed20) at ../../kdeui/kernel/kapplication.cpp:302
#30 0x00eb9a3b in QCoreApplication::notifyInternal (this=0x8d2e420, receiver=0x8e722a0, event=0xbfbfed20) at kernel/qcoreapplication.cpp:704
#31 0x0110a952 in QCoreApplication::sendEvent (receiver=0x8e722a0, event=0xbfbfed20, alienWidget=0x8e722a0, nativeWidget=0x8e732e8, buttonDown=0x1a48058, lastMouseReceiver=..., spontaneous=true)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#32 QApplicationPrivate::sendMouseEvent (receiver=0x8e722a0, event=0xbfbfed20, alienWidget=0x8e722a0, nativeWidget=0x8e732e8, buttonDown=0x1a48058, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:2965
#33 0x01196088 in QETWidget::translateMouseEvent (this=0x8e732e8, event=0xbfbff23c) at kernel/qapplication_x11.cpp:4368
#34 0x01195511 in QApplication::x11ProcessEvent (this=0x8d2e420, event=0xbfbff23c) at kernel/qapplication_x11.cpp:3379
#35 0x011c460a in x11EventSourceDispatch (s=0x8d2f530, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#36 0x01bad5e5 in g_main_dispatch (context=0x8d4c6a0) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:1960
#37 IA__g_main_context_dispatch (context=0x8d4c6a0) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2513
#38 0x01bb12d8 in g_main_context_iterate (context=0x8d4c6a0, block=<value optimized out>, dispatch=1, self=0x8d2fcd8) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2591
#39 0x01bb14b8 in IA__g_main_context_iteration (context=0x8d4c6a0, may_block=1) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2654
#40 0x00ee55d5 in QEventDispatcherGlib::processEvents (this=0x8d4bb18, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#41 0x011c4135 in QGuiEventDispatcherGlib::processEvents (this=0x8d4bb18, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#42 0x00eb8059 in QEventLoop::processEvents (this=0xbfbff534, flags=) at kernel/qeventloop.cpp:149
#43 0x00eb84aa in QEventLoop::exec (this=0xbfbff534, flags=...) at kernel/qeventloop.cpp:201
#44 0x00ebc69f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#45 0x01104577 in QApplication::exec () at kernel/qapplication.cpp:3579
#46 0x06044bb0 in kdemain (argc=1, argv=0x8d19038) at ../../../../plasma/netbook/shell/main.cpp:66
#47 0x0804e133 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x8cedde8 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051465 "0") at ../../kinit/kinit.cpp:717
#48 0x0804ec6d in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1209
#49 0x0804f190 in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1402
#50 0x0804fe4f in main (argc=4, argv=0xbfc00004, envp=0xbfc00018) at ../../kinit/kinit.cpp:1845

This bug may be a duplicate of or related to bug 233961.

Possible duplicates by query: bug 238988, bug 238092, bug 236018, bug 234503, bug 234476.

Reported using DrKonqi