Version: (using KDE 4.1.96) Installed from: Ubuntu Packages If i move one of the notifications provided by kopete when a user speaks to you/logs in/etc i get plasma to crash I've a backtrace but it sucks a bit even though i'm supposed to have all ubuntu dbg packages installed #0 0x00007f7e470ce0ec in ?? () from /usr/lib/libQtGui.so.4 #1 0x00007f7e470ce9ab in ?? () from /usr/lib/libQtGui.so.4 #2 0x00007f7e470cead6 in QGraphicsScene::mouseReleaseEvent () from /usr/lib/libQtGui.so.4 #3 0x00007f7e470cedf0 in QGraphicsScene::event () from /usr/lib/libQtGui.so.4 #4 0x00007f7e46b8cc3d in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4 #5 0x00007f7e46b949ba in QApplication::notify () from /usr/lib/libQtGui.so.4 #6 0x00007f7e491763cb in KApplication::notify (this=0x7d4e70, receiver=0x941260, event=0x7fff52f24a10) at /build/buildd/kde4libs-4.1.96/kdeui/kernel/kapplication.cpp:307 #7 0x00007f7e46468d61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4 #8 0x00007f7e470dea8b in QGraphicsView::mouseReleaseEvent () from /usr/lib/libQtGui.so.4 #9 0x00007f7e46bdf329 in QWidget::event () from /usr/lib/libQtGui.so.4 #10 0x00007f7e470dc9bb in QGraphicsView::viewportEvent () from /usr/lib/libQtGui.so.4 #11 0x00007f7e46468038 in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/lib/libQtCore.so.4 #12 0x00007f7e46b8cc0c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4 #13 0x00007f7e46b9522a in QApplication::notify () from /usr/lib/libQtGui.so.4 #14 0x00007f7e491763cb in KApplication::notify (this=0x7d4e70, receiver=0xececb0, event=0x7fff52f25270) at /build/buildd/kde4libs-4.1.96/kdeui/kernel/kapplication.cpp:307 #15 0x00007f7e46468d61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4 #16 0x00007f7e46b945c8 in QApplicationPrivate::sendMouseEvent () from /usr/lib/libQtGui.so.4 #17 0x00007f7e46bf8be9 in ?? () from /usr/lib/libQtGui.so.4 #18 0x00007f7e46bf7607 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4 #19 0x00007f7e46c1f2c4 in ?? () from /usr/lib/libQtGui.so.4 #20 0x00007f7e41954d3b in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #21 0x00007f7e4195850d in ?? () from /usr/lib/libglib-2.0.so.0 #22 0x00007f7e419586cb in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0 #23 0x00007f7e4649115f in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4 #24 0x00007f7e46c1ea6f in ?? () from /usr/lib/libQtGui.so.4 #25 0x00007f7e46467682 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4 #26 0x00007f7e4646780d in QEventLoop::exec () from /usr/lib/libQtCore.so.4 #27 0x00007f7e46469cbd in QCoreApplication::exec () from /usr/lib/libQtCore.so.4 #28 0x00007f7e4aac56cb in kdemain (argc=2, argv=0x7fff52f26318) at /build/buildd/kdebase-workspace-4.1.96/plasma/shells/desktop/main.cpp:54 #29 0x00007f7e45816466 in __libc_start_main () from /lib/libc.so.6 #30 0x00000000004007c9 in _start ()
Just to clarify, happens with other kind of notifications too (for example Kmail new mail notification (off by default))
As you can reproduce the crash at will, may you read http://techbase.kde.org/Development/Tutorials/Debugging/How_to_create_useful_crash_reports and post a complete backtrace here? You need to install: "libqt4-dbg" Thanks :)
this sounds alot like the bug fixed in qt now where disapearing notifications crash plasma(i'm quite sure it's the same bug). what version of qt do you have?
@Darío i already know that, and that backtrace is with these package installed, it would work if ubuntu dbg packages where not broken, anyway using my kde4.2 branch also crashes @Beat that happens with both my self-compiled qt-copy and with ubuntu's 4.4.3 package gdb: #0 0x00007fea416b010c in QGraphicsScenePrivate::itemsAtPosition (this=0x1cbdae0, screenPos=@0x7fff4d883040, scenePos=@0x7fff4d883000, widget=0x2504290) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:438 #1 0x00007fea416b0919 in QGraphicsScenePrivate::dispatchHoverEvent (this=0x1cbdae0, hoverEvent=0x7fff4d883090) at graphicsview/qgraphicsscene.cpp:3371 #2 0x00007fea416b0abc in QGraphicsScene::mouseReleaseEvent (this=<value optimized out>, mouseEvent=0x7fff4d883650) at graphicsview/qgraphicsscene.cpp:3613 #3 0x00007fea416b0d8e in QGraphicsScene::event (this=0x1c842e0, event=0x7fff4d883650) at graphicsview/qgraphicsscene.cpp:2966 #4 0x00007fea41178c0f in QApplicationPrivate::notify_helper (this=0x1bfc140, receiver=0x1c842e0, e=0x7fff4d883650) at kernel/qapplication.cpp:3803 #5 0x00007fea4117adc5 in QApplication::notify (this=0x1bd7290, receiver=0x1c842e0, e=0x7fff4d883650) at kernel/qapplication.cpp:3768 #6 0x00007fea439c8070 in KApplication::notify (this=0x1bd7290, receiver=0x1c842e0, event=0x7fff4d883650) at /home/kde42/kdelibs/kdeui/kernel/kapplication.cpp:307 #7 0x00007fea40a4b5f9 in QCoreApplication::notifyInternal (this=0x1bd7290, receiver=0x1c842e0, event=0x7fff4d883650) at kernel/qcoreapplication.cpp:587 #8 0x00007fea416c1a39 in QGraphicsView::mouseReleaseEvent (this=0x25c6890, event=0x7fff4d883ee0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:209 #9 0x00007fea411c6e70 in QWidget::event (this=0x25c6890, event=0x7fff4d883ee0) at kernel/qwidget.cpp:7163 #10 0x00007fea414cb876 in QFrame::event (this=0x25c6890, e=0x7fff4d883ee0) at widgets/qframe.cpp:651 #11 0x00007fea41550a89 in QAbstractScrollArea::viewportEvent (this=0x7fea41afa400, e=0x1cbdae0) at widgets/qabstractscrollarea.cpp:943 #12 0x00007fea416bdc51 in QGraphicsView::viewportEvent (this=0x25c6890, event=0x7fff4d883ee0) at graphicsview/qgraphicsview.cpp:2337 #13 0x00007fea41551c38 in QAbstractScrollAreaFilter::eventFilter (this=<value optimized out>, o=<value optimized out>, e=0x7fff4d883040) at widgets/qabstractscrollarea_p.h:96 #14 0x00007fea40a4b8fe in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x2504290, event=0x7fff4d883ee0) at kernel/qcoreapplication.cpp:694 #15 0x00007fea41178be0 in QApplicationPrivate::notify_helper (this=0x1bfc140, receiver=0x2504290, e=0x7fff4d883ee0) at kernel/qapplication.cpp:3799 #16 0x00007fea4117afc9 in QApplication::notify (this=0x1bd7290, receiver=0x2504290, e=0x7fff4d883ee0) at kernel/qapplication.cpp:3528 #17 0x00007fea439c8070 in KApplication::notify (this=0x1bd7290, receiver=0x2504290, event=0x7fff4d883ee0) at /home/kde42/kdelibs/kdeui/kernel/kapplication.cpp:307 #18 0x00007fea40a4b5f9 in QCoreApplication::notifyInternal (this=0x1bd7290, receiver=0x2504290, event=0x7fff4d883ee0) at kernel/qcoreapplication.cpp:587 #19 0x00007fea4117e465 in QApplicationPrivate::sendMouseEvent (receiver=0x2504290, event=0x7fff4d883ee0, alienWidget=<value optimized out>, nativeWidget=0x25c6890, buttonDown=<value optimized out>, lastMouseReceiver=@0x7fea41b16200) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:212 #20 0x00007fea411dd996 in QETWidget::translateMouseEvent (this=0x25c6890, event=<value optimized out>) at kernel/qapplication_x11.cpp:4042 #21 0x00007fea411dc88b in QApplication::x11ProcessEvent (this=0x81, event=0x7fff4d8847f0) at kernel/qapplication_x11.cpp:3160 valgrind: ==10630== ==10630== Invalid read of size 8 ==10630== at 0x907A101: QGraphicsScenePrivate::itemsAtPosition(QPoint const&, QPointF const&, QWidget*) const (qobject.h:438) ==10630== by 0x907A918: QGraphicsScenePrivate::dispatchHoverEvent(QGraphicsSceneHoverEvent*) (qgraphicsscene.cpp:3371) ==10630== by 0x907AABB: QGraphicsScene::mouseReleaseEvent(QGraphicsSceneMouseEvent*) (qgraphicsscene.cpp:3613) ==10630== by 0x907AD8D: QGraphicsScene::event(QEvent*) (qgraphicsscene.cpp:2966) ==10630== by 0x8B42C0E: QApplicationPrivate::notify_helper(QObject*, QEvent*) (qapplication.cpp:3803) ==10630== by 0x8B44DC4: QApplication::notify(QObject*, QEvent*) (qapplication.cpp:3768) ==10630== by 0x689606F: KApplication::notify(QObject*, QEvent*) (kapplication.cpp:307) ==10630== by 0x989E5F8: QCoreApplication::notifyInternal(QObject*, QEvent*) (qcoreapplication.cpp:587) ==10630== by 0x908BA38: QGraphicsView::mouseReleaseEvent(QMouseEvent*) (qcoreapplication.h:209) ==10630== by 0x8B90E6F: QWidget::event(QEvent*) (qwidget.cpp:7163) ==10630== by 0x8E95875: QFrame::event(QEvent*) (qframe.cpp:651) ==10630== by 0x8F1AA88: QAbstractScrollArea::viewportEvent(QEvent*) (qabstractscrollarea.cpp:943) ==10630== Address 0x21ab4e40 is 8 bytes inside a block of size 40 free'd ==10630== at 0x4C24DAD: operator delete(void*) (vg_replace_malloc.c:342) ==10630== by 0x8B8CB33: QWidget::~QWidget() (qwidget.cpp:1351) ==10630== by 0x98AD71F: QObjectPrivate::deleteChildren() (qobject.cpp:1875) ==10630== by 0x8B8AF23: QWidget::~QWidget() (qwidget.cpp:1338) ==10630== by 0x9083159: QGraphicsView::~QGraphicsView() (qgraphicsview.cpp:775) ==10630== by 0x51B2A41: Plasma::ExtenderItemView::~ExtenderItemView() (extenderitem.cpp:67) ==10630== by 0x51AF09D: Plasma::ExtenderItem::mouseReleaseEvent(QGraphicsSceneMouseEvent*) (extenderitem.cpp:730) ==10630== by 0x9055958: QGraphicsItem::sceneEvent(QEvent*) (qgraphicsitem.cpp:4001) ==10630== by 0x9094B23: QGraphicsWidget::sceneEvent(QEvent*) (qgraphicswidget.cpp:1011) ==10630== by 0x906E700: QGraphicsScenePrivate::sendEvent(QGraphicsItem*, QEvent*) (qgraphicsscene.cpp:1030) ==10630== by 0x906F4C3: QGraphicsScenePrivate::sendMouseEvent(QGraphicsSceneMouseEvent*) (qgraphicsscene.cpp:1101) ==10630== by 0x907AA68: QGraphicsScene::mouseReleaseEvent(QGraphicsSceneMouseEvent*) (qgraphicsscene.cpp:3597) ==10630== ==10630== Invalid read of size 8 ==10630== at 0x907A10C: QGraphicsScenePrivate::itemsAtPosition(QPoint const&, QPointF const&, QWidget*) const (qobject.h:438) ==10630== by 0x907A918: QGraphicsScenePrivate::dispatchHoverEvent(QGraphicsSceneHoverEvent*) (qgraphicsscene.cpp:3371) ==10630== by 0x907AABB: QGraphicsScene::mouseReleaseEvent(QGraphicsSceneMouseEvent*) (qgraphicsscene.cpp:3613) ==10630== by 0x907AD8D: QGraphicsScene::event(QEvent*) (qgraphicsscene.cpp:2966) ==10630== by 0x8B42C0E: QApplicationPrivate::notify_helper(QObject*, QEvent*) (qapplication.cpp:3803) ==10630== by 0x8B44DC4: QApplication::notify(QObject*, QEvent*) (qapplication.cpp:3768) ==10630== by 0x689606F: KApplication::notify(QObject*, QEvent*) (kapplication.cpp:307) ==10630== by 0x989E5F8: QCoreApplication::notifyInternal(QObject*, QEvent*) (qcoreapplication.cpp:587) ==10630== by 0x908BA38: QGraphicsView::mouseReleaseEvent(QMouseEvent*) (qcoreapplication.h:209) ==10630== by 0x8B90E6F: QWidget::event(QEvent*) (qwidget.cpp:7163) ==10630== by 0x8E95875: QFrame::event(QEvent*) (qframe.cpp:651) ==10630== by 0x8F1AA88: QAbstractScrollArea::viewportEvent(QEvent*) (qabstractscrollarea.cpp:943) ==10630== Address 0x10 is not stack'd, malloc'd or (recently) free'd
*** Bug 182651 has been marked as a duplicate of this bug. ***
Created attachment 31017 [details] backtrace I also experience this crash. There's a backtrace in the attachment...
Pasted backtrace from comment 6: Anwendung: Plasma-Arbeitsfläche (plasma), Signal SIGSEGV [Current thread is 0 (LWP 3206)] Thread 3 (Thread 0xaa655b90 (LWP 3207)): #0 0xb7f65424 in __kernel_vsyscall () #1 0xb57cf025 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/cmov/libpthread.so.0 #2 0xb7e617fd in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/cmov/libc.so.6 #3 0xb68c1542 in QWaitCondition::wait (this=0x870dd88, mutex=0x870dd84, time=4294967295) at thread/qwaitcondition_unix.cpp:82 #4 0xb598d312 in QHostInfoAgent::run (this=0x870dd78) at kernel/qhostinfo.cpp:241 #5 0xb68c052e in QThreadPrivate::start (arg=0x870dd78) at thread/qthread_unix.cpp:185 #6 0xb57cb4c0 in start_thread () from /lib/i686/cmov/libpthread.so.0 #7 0xb7e536de in clone () from /lib/i686/cmov/libc.so.6 Thread 2 (Thread 0xa9cb4b90 (LWP 3208)): #0 0xb7f65424 in __kernel_vsyscall () #1 0xb57cf025 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/cmov/libpthread.so.0 #2 0xb7e617fd in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/cmov/libc.so.6 #3 0xb68c1542 in QWaitCondition::wait (this=0x8584280, mutex=0x858427c, time=4294967295) at thread/qwaitcondition_unix.cpp:82 #4 0xaa77f4a2 in RenderThread::run (this=0x8584274) at ../../../../plasma/wallpapers/image/renderthread.cpp:91 #5 0xb68c052e in QThreadPrivate::start (arg=0x8584274) at thread/qthread_unix.cpp:185 #6 0xb57cb4c0 in start_thread () from /lib/i686/cmov/libpthread.so.0 #7 0xb7e536de in clone () from /lib/i686/cmov/libc.so.6 Thread 1 (Thread 0xb4b656e0 (LWP 3206)): [KCrash Handler] #6 0xb71dd8f6 in QGraphicsScenePrivate::itemsAtPosition (this=0x827d148, screenPos=@0xbfe7dd04, scenePos=@0xbfe7dcf0, widget=0x8a43c90) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:438 #7 0xb71de1a7 in QGraphicsScenePrivate::dispatchHoverEvent (this=0x827d148, hoverEvent=0xbfe7dd68) at graphicsview/qgraphicsscene.cpp:3371 #8 0xb71de305 in QGraphicsScene::mouseReleaseEvent (this=0x8328a78, mouseEvent=0xbfe7e1b4) at graphicsview/qgraphicsscene.cpp:3613 #9 0xb71de5f7 in QGraphicsScene::event (this=0x8328a78, event=0xbfe7e1b4) at graphicsview/qgraphicsscene.cpp:2966 #10 0xb6c3e79c in QApplicationPrivate::notify_helper (this=0x82827e8, receiver=0x8328a78, e=0xbfe7e1b4) at kernel/qapplication.cpp:3803 #11 0xb6c4661e in QApplication::notify (this=0x827f180, receiver=0x8328a78, e=0xbfe7e1b4) at kernel/qapplication.cpp:3393 #12 0xb77f977d in KApplication::notify (this=0x827f180, receiver=0x8328a78, event=0xbfe7e1b4) at ../../kdeui/kernel/kapplication.cpp:307 #13 0xb69b00e1 in QCoreApplication::notifyInternal (this=0x827f180, receiver=0x8328a78, event=0xbfe7e1b4) at kernel/qcoreapplication.cpp:587 #14 0xb71f2a82 in QGraphicsView::mouseReleaseEvent (this=0x8a47e60, event=0xbfe7e88c) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:209 #15 0xb6c967c2 in QWidget::event (this=0x8a47e60, event=0xbfe7e88c) at kernel/qwidget.cpp:7163 #16 0xb6fc9d43 in QFrame::event (this=0x8a47e60, e=0xbfe7e88c) at widgets/qframe.cpp:651 #17 0xb706046f in QAbstractScrollArea::viewportEvent (this=0x8a47e60, e=0x8a43c90) at widgets/qabstractscrollarea.cpp:943 #18 0xb71edb6f in QGraphicsView::viewportEvent (this=0x8a47e60, event=0xbfe7e88c) at graphicsview/qgraphicsview.cpp:2337 #19 0xb7062a15 in QAbstractScrollAreaFilter::eventFilter (this=0x8b63988, o=0x8a43c90, e=0xbfe7e88c) at widgets/qabstractscrollarea_p.h:96 #20 0xb69af2ca in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x82827e8, receiver=0x8a43c90, event=0xbfe7e88c) at kernel/qcoreapplication.cpp:694 #21 0xb6c3e77a in QApplicationPrivate::notify_helper (this=0x82827e8, receiver=0x8a43c90, e=0xbfe7e88c) at kernel/qapplication.cpp:3799 #22 0xb6c46fd1 in QApplication::notify (this=0x827f180, receiver=0x8a43c90, e=0xbfe7e88c) at kernel/qapplication.cpp:3528 #23 0xb77f977d in KApplication::notify (this=0x827f180, receiver=0x8a43c90, event=0xbfe7e88c) at ../../kdeui/kernel/kapplication.cpp:307 #24 0xb69b00e1 in QCoreApplication::notifyInternal (this=0x827f180, receiver=0x8a43c90, event=0xbfe7e88c) at kernel/qcoreapplication.cpp:587 #25 0xb6c4625e in QApplicationPrivate::sendMouseEvent (receiver=0x8a43c90, event=0xbfe7e88c, alienWidget=0x8a43c90, nativeWidget=0x8a47e60, buttonDown=0xb7401670, lastMouseReceiver=@0xb7401674) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:212 #26 0xb6cafe2d in QETWidget::translateMouseEvent (this=0x8a47e60, event=0xbfe7ed7c) at kernel/qapplication_x11.cpp:4044 #27 0xb6caec11 in QApplication::x11ProcessEvent (this=0x827f180, event=0xbfe7ed7c) at kernel/qapplication_x11.cpp:3162 #28 0xb6cd863a in x11EventSourceDispatch (s=0x8286648, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:142 #29 0xb58171b8 in IA__g_main_context_dispatch (context=0x82858f0) at /tmp/buildd/glib2.0-2.16.6/glib/gmain.c:2012 #30 0xb581a853 in g_main_context_iterate (context=0x82858f0, block=1, dispatch=1, self=0x8279908) at /tmp/buildd/glib2.0-2.16.6/glib/gmain.c:2645 #31 0xb581aa11 in IA__g_main_context_iteration (context=0x82858f0, may_block=1) at /tmp/buildd/glib2.0-2.16.6/glib/gmain.c:2708 #32 0xb69da5e8 in QEventDispatcherGlib::processEvents (this=0x8277eb0, flags={i = -1075318984}) at kernel/qeventdispatcher_glib.cpp:319 #33 0xb6cd7d75 in QGuiEventDispatcherGlib::processEvents (this=0x8277eb0, flags={i = -1075318936}) at kernel/qguieventdispatcher_glib.cpp:198 #34 0xb69ae7aa in QEventLoop::processEvents (this=0xbfe7efe0, flags={i = -1075318872}) at kernel/qeventloop.cpp:143 #35 0xb69ae96a in QEventLoop::exec (this=0xbfe7efe0, flags={i = -1075318808}) at kernel/qeventloop.cpp:194 #36 0xb69b1025 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:845 #37 0xb6c3e617 in QApplication::exec () at kernel/qapplication.cpp:3331 #38 0xb7efbc16 in kdemain (argc=1, argv=0xbfe7f194) at ../../../../plasma/shells/desktop/main.cpp:54 #39 0x08048592 in main (argc=1196310860, argv=0x45474155) at plasma_qgv_dummy.cpp:3
Isn't this related to bug 178601 ?
Also happens in KDE 4.2.0 from Fedora 9 RPMS when I try to move a "file download" notification window from konqueror. Here's a full backtrace: Application: Plasma Workspace (plasma), signal SIGSEGV [Current thread is 1 (Thread 0xb7f15790 (LWP 2170))] Thread 3 (Thread 0x1afcb90 (LWP 2172)): #0 0x001e3416 in __kernel_vsyscall () #1 0x00594ba5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0 #2 0x029228f2 in QWaitCondition::wait (this=<value optimized out>, mutex=<value optimized out>, time=<value optimized out>) at thread/qwaitcondition_unix.cpp:82 #3 0x001f7dba in RenderThread::run (this=0x88b224c) at /usr/src/debug/kdebase-workspace-4.2.0/plasma/wallpapers/image/renderthread.cpp:91 #4 0x029218ae in QThreadPrivate::start (arg=<value optimized out>) at thread/qthread_unix.cpp:185 #5 0x0059132f in start_thread () from /lib/libpthread.so.0 #6 0x004cc20e in clone () from /lib/libc.so.6 Thread 2 (Thread 0x71cfb90 (LWP 2173)): #0 0x001e3416 in __kernel_vsyscall () #1 0x00594ba5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0 #2 0x029228f2 in QWaitCondition::wait (this=<value optimized out>, mutex=<value optimized out>, time=<value optimized out>) at thread/qwaitcondition_unix.cpp:82 #3 0x001f7dba in RenderThread::run (this=0x8a31f94) at /usr/src/debug/kdebase-workspace-4.2.0/plasma/wallpapers/image/renderthread.cpp:91 #4 0x029218ae in QThreadPrivate::start (arg=<value optimized out>) at thread/qthread_unix.cpp:185 #5 0x0059132f in start_thread () from /lib/libpthread.so.0 #6 0x004cc20e in clone () from /lib/libc.so.6 Thread 1 (Thread 0xb7f15790 (LWP 2170)): [KCrash Handler] #6 0x03740f36 in QGraphicsScenePrivate::itemsAtPosition (this=<value optimized out>, screenPos=<value optimized out>, scenePos=<value optimized out>, widget=<value optimized out>) at ../../src/corelib/kernel/qobject.h:438 #7 0x037417f7 in QGraphicsScenePrivate::dispatchHoverEvent (this=<value optimized out>, hoverEvent=<value optimized out>) at graphicsview/qgraphicsscene.cpp:3371 #8 0x03741955 in QGraphicsScene::mouseReleaseEvent (this=<value optimized out>, mouseEvent=<value optimized out>) at graphicsview/qgraphicsscene.cpp:3613 #9 0x03741c47 in QGraphicsScene::event (this=<value optimized out>, event=<value optimized out>) at graphicsview/qgraphicsscene.cpp:2966 #10 0x0319d66c in QApplicationPrivate::notify_helper (this=<value optimized out>, receiver=<value optimized out>, e=<value optimized out>) at kernel/qapplication.cpp:3803 #11 0x031a54ce in QApplication::notify (this=<value optimized out>, receiver=<value optimized out>, e=<value optimized out>) at kernel/qapplication.cpp:3393 #12 0x03b3095d in KApplication::notify (this=<value optimized out>, receiver=<value optimized out>, event=<value optimized out>) at /usr/src/debug/kdelibs-4.2.0/kdeui/kernel/kapplication.cpp:307 #13 0x02a122f1 in QCoreApplication::notifyInternal (this=<value optimized out>, receiver=<value optimized out>, event=<value optimized out>) at kernel/qcoreapplication.cpp:587 #14 0x037560a2 in QGraphicsView::mouseReleaseEvent (this=<value optimized out>, event=<value optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:209 #15 0x031f5872 in QWidget::event (this=<value optimized out>, event=<value optimized out>) at kernel/qwidget.cpp:7163 #16 0x0352c683 in QFrame::event (this=<value optimized out>, e=<value optimized out>) at widgets/qframe.cpp:651 #17 0x035c329f in QAbstractScrollArea::viewportEvent (this=) at widgets/qabstractscrollarea.cpp:943 #18 0x0375115f in QGraphicsView::viewportEvent (this=<value optimized out>, event=<value optimized out>) at graphicsview/qgraphicsview.cpp:2337 #19 0x035c5845 in QAbstractScrollAreaFilter::eventFilter (this=<value optimized out>, o=<value optimized out>, e=) at widgets/qabstractscrollarea_p.h:96 #20 0x02a114da in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=<value optimized out>, event=<value optimized out>) at kernel/qcoreapplication.cpp:694 #21 0x0319d64a in QApplicationPrivate::notify_helper (this=<value optimized out>, receiver=<value optimized out>, e=<value optimized out>) at kernel/qapplication.cpp:3799 #22 0x031a5e81 in QApplication::notify (this=<value optimized out>, receiver=<value optimized out>, e=<value optimized out>) at kernel/qapplication.cpp:3528 #23 0x03b3095d in KApplication::notify (this=<value optimized out>, receiver=<value optimized out>, event=<value optimized out>) at /usr/src/debug/kdelibs-4.2.0/kdeui/kernel/kapplication.cpp:307 #24 0x02a122f1 in QCoreApplication::notifyInternal (this=<value optimized out>, receiver=<value optimized out>, event=<value optimized out>) at kernel/qcoreapplication.cpp:587 #25 0x031a510e in QApplicationPrivate::sendMouseEvent (receiver=<value optimized out>, event=<value optimized out>, alienWidget=<value optimized out>, nativeWidget=<value optimized out>, buttonDown=<value optimized out>, lastMouseReceiver=<value optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:212 #26 0x0320f5f6 in QETWidget::translateMouseEvent (this=<value optimized out>, event=<value optimized out>) at kernel/qapplication_x11.cpp:4046 #27 0x0320e97d in QApplication::x11ProcessEvent (this=<value optimized out>, event=<value optimized out>) at kernel/qapplication_x11.cpp:3042 #28 0x0323710c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:142 #29 0x0061ce38 in g_main_context_dispatch () from /lib/libglib-2.0.so.0 #30 0x006204e3 in ?? () from /lib/libglib-2.0.so.0 #31 0x006206a1 in g_main_context_iteration () from /lib/libglib-2.0.so.0 #32 0x02a3ca38 in QEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:319 #33 0x032367d5 in QGuiEventDispatcherGlib::processEvents (this=) at kernel/qguieventdispatcher_glib.cpp:198 #34 0x02a109da in QEventLoop::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qeventloop.cpp:143 #35 0x02a10b9a in QEventLoop::exec (this=<value optimized out>, flags=<value optimized out>) at kernel/qeventloop.cpp:194 #36 0x02a13245 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:845 #37 0x0319d4e7 in QApplication::exec () at kernel/qapplication.cpp:3331 #38 0x02029e76 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.2.0/plasma/shells/desktop/main.cpp:54 #39 0x080486f2 in main (argc=1, argv=0xa) at /usr/src/debug/kdebase-workspace-4.2.0/i386-redhat-linux-gnu/plasma/shells/desktop/plasma_qgv_dummy.cpp:3
*** This bug has been marked as a duplicate of bug 178601 ***
Reopening as the duplicate bug says to be fixed and i can still reproduce this with 4.2.3
yes, the fix isn't in 4.2. from comment #18 on the dup'd report: "The change in behavior is quite invasive: it's a huge patch, so I don't feel comfortable backporting to stable." *** This bug has been marked as a duplicate of bug 178601 ***