Bug 188534

If 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? Thanks :)

Marking as NEEDSINFO

The application Plasma Workspace (plasma) crashed and caused the signal 11 (SIGSEGV).

Kubuntu 9.04
kde 4.2.2

plasma crashed after few refreshes in konqueror

Application: Plasma Workspace (plasma), signal SIGSEGV
[Current thread is 0 (LWP 3804)]

Thread 4 (Thread 0xa93bcb90 (LWP 3805)):
#0  0xb7fd9430 in __kernel_vsyscall ()
#1  0xb51680e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb63202ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb650c9b2 in QWaitCondition::wait (this=0x98b5700, mutex=0x98b56fc, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb798d152 in QHostInfoAgent::run (this=0x98b56f0) at kernel/qhostinfo.cpp:260
#5  0xb650b96e in QThreadPrivate::start (arg=0x98b56f0) at thread/qthread_unix.cpp:189
#6  0xb51644ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb631149e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 3 (Thread 0xa8b89b90 (LWP 3806)):
#0  0xb7fd9430 in __kernel_vsyscall ()
#1  0xb63097b1 in select () from /lib/tls/i686/cmov/libc.so.6
#2  0xb65dd380 in QProcessManager::run (this=0x9452f08) at io/qprocess_unix.cpp:305
#3  0xb650b96e in QThreadPrivate::start (arg=0x9452f08) at thread/qthread_unix.cpp:189
#4  0xb51644ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0xb631149e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa802cb90 (LWP 3812)):
#0  0xb7fd9430 in __kernel_vsyscall ()
#1  0xb51680e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb63202ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb650c9b2 in QWaitCondition::wait (this=0x96c3248, mutex=0x96c3244, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xa956db9a in ?? () from /usr/lib/kde4/plasma_wallpaper_image.so
#5  0xb650b96e in QThreadPrivate::start (arg=0xa8200788) at thread/qthread_unix.cpp:189
#6  0xb51644ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb631149e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb4c55710 (LWP 3804)):
[KCrash Handler]
#6  0x00000000 in ?? ()
#7  0xb6a63e50 in blend_transformed_bilinear_tiled_argb<RegularSpans> (count=256, spans=0x15e1389c, userData=0x15dff040) at painting/qdrawhelper.cpp:5741
#8  0xb6a60240 in qBlendTexture (count=256, spans=0x15e1389c, userData=0x15dff040) at painting/qdrawhelper.cpp:7030
#9  0xb6aa6532 in gray_hline (worker=0x15e13488, x=66, y=21, area=-93952, acount=1) at painting/qgrayraster.c:1231
#10 0xb6aa6fbc in gray_convert_glyph (worker=0x15e13488) at painting/qgrayraster.c:1325
#11 0xb6a458a6 in QRasterPaintEnginePrivate::rasterize (this=0x15dc4508, outline=0x15de9abc, callback=0xb6a601f0 <qBlendTexture(int, QT_FT_Span_ const*, void*)>, userData=0x15dff040)
    at painting/qpaintengine_raster.cpp:3948
#12 0xb6a4eabf in QRasterPaintEngine::fillPath (this=0x15cfb790, path=@0xbfdf2664, fillData=0x15dff040) at painting/qpaintengine_raster.cpp:1364
#13 0xb6a5a9d1 in QRasterPaintEngine::drawPath (this=0x15cfb790, path=@0xbfdf2664) at painting/qpaintengine_raster.cpp:1887
#14 0xb69e637c in QPainter::drawPath (this=0xbfdf25dc, path=@0xbfdf2664) at painting/qpainter.cpp:3218
#15 0xb69e021f in QPainterPrivate::draw_helper (this=0x15d99b20, originalPath=@0xbfdf2664, op=<value optimized out>) at painting/qpainter.cpp:451
#16 0xb69e331a in QPainter::drawRects (this=0xbfdf2cc8, rects=0xbfdf2740, rectCount=1) at painting/qpainter.cpp:3359
#17 0xb69e5ac5 in QPainter::drawPixmap (this=0xbfdf2cc8, r=@0xbfdf2858, pm=@0xbfdf288c, sr=@0xbfdf2838) at ../../include/QtGui/../../src/gui/painting/qpainter.h:604
#18 0xb7e72f2f in Plasma::Svg::paint () from /usr/lib/libplasma.so.3
#19 0xa9473d51 in ?? () from /usr/lib/kde4/plasma_applet_clock.so
#20 0xa9474a37 in ?? () from /usr/lib/kde4/plasma_applet_clock.so
#21 0xb7e0b7d1 in Plasma::Applet::paint () from /usr/lib/libplasma.so.3
#22 0xb6eff2f4 in _q_paintItem (item=<value optimized out>, painter=0xbfdf30f4, option=0xbfdf3250, widget=0x0, useWindowOpacity=false, painterStateProtection=true)
    at graphicsview/qgraphicsscene.cpp:4483
#23 0xb6eff652 in _q_paintIntoCache (pix=0xbfdf3868, item=0x96f1928, pixmapExposed=@0xbfdf38ac, itemToPixmap=@0xbfdf3528, renderHints={i = -1075890012}, option=0xbfdf3250, 
    painterStateProtection=<value optimized out>) at graphicsview/qgraphicsscene.cpp:4521
#24 0xb6f06002 in QGraphicsScenePrivate::drawItemHelper (this=0x9456a40, item=0x96f1928, painter=0xbfdf3f30, option=0x9b6cdd4, widget=0x9a65320, painterStateProtection=true)
    at graphicsview/qgraphicsscene.cpp:4800
#25 0xb6f0688f in QGraphicsScene::drawItems (this=0x9459fa0, painter=0xbfdf3f30, numItems=2, items=0x15c64f10, options=0x9b6cd50, widget=0x9a65320) at graphicsview/qgraphicsscene.cpp:4957
#26 0xb6f18ffc in QGraphicsView::drawItems (this=0x9ba9d20, painter=0xbfdf3f30, numItems=2, items=0x15c64f10, options=0x9b6cd50) at graphicsview/qgraphicsview.cpp:3783
#27 0xb6f26a52 in QGraphicsView::paintEvent (this=0x9ba9d20, event=0xbfdf44b4) at graphicsview/qgraphicsview.cpp:3542
#28 0xb690391e in QWidget::event (this=0x9ba9d20, event=0xbfdf44b4) at kernel/qwidget.cpp:7654
#29 0xb6cdd993 in QFrame::event (this=0x9ba9d20, e=0xbfdf44b4) at widgets/qframe.cpp:559
#30 0xb6d7d94f in QAbstractScrollArea::viewportEvent (this=0x9ba9d20, e=0xbfdefc68) at widgets/qabstractscrollarea.cpp:962
#31 0xb6f21102 in QGraphicsView::viewportEvent (this=0x9ba9d20, event=0xbfdf44b4) at graphicsview/qgraphicsview.cpp:2933
#32 0xb6d7ff55 in QAbstractScrollAreaFilter::eventFilter (this=0x9a64b48, o=0x9a65320, e=0xbfdf44b4) at widgets/qabstractscrollarea_p.h:100
#33 0xb65fec5a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x9453aa0, receiver=0x9a65320, event=0xbfdf44b4) at kernel/qcoreapplication.cpp:718
#34 0xb68ace7a in QApplicationPrivate::notify_helper (this=0x9453aa0, receiver=0x9a65320, e=0xbfdf44b4) at kernel/qapplication.cpp:4080
#35 0xb68b5282 in QApplication::notify (this=0x9447f48, receiver=0x9a65320, e=0xbfdf44b4) at kernel/qapplication.cpp:4049
#36 0xb770494d in KApplication::notify (this=0x9447f48, receiver=0x9a65320, event=0xbfdf44b4) at /build/buildd/kde4libs-4.2.2/kdeui/kernel/kapplication.cpp:307
#37 0xb65ffa3b in QCoreApplication::notifyInternal (this=0x9447f48, receiver=0x9a65320, event=0xbfdf44b4) at kernel/qcoreapplication.cpp:602
#38 0xb68b7fee in QCoreApplication::sendSpontaneousEvent (receiver=0x9a65320, event=0xbfdefc68) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#39 0xb690b719 in QWidgetPrivate::drawWidget (this=0x9a649d8, pdev=0x9ba9d94, rgn=@0xbfdf46e0, offset=@0xbfdf46b0, flags=68, sharedPainter=0x0, backingStore=0x9af5ec8) at kernel/qwidget.cpp:5046
#40 0xb6ac7fc5 in QWidgetBackingStore::sync (this=0x9af5ec8) at painting/qbackingstore.cpp:1258
#41 0xb68fbbb6 in QWidgetPrivate::syncBackingStore (this=0x9af9fa8) at kernel/qwidget.cpp:1603
#42 0xb6903d85 in QWidget::event (this=0x9ba9d20, event=0x15addd20) at kernel/qwidget.cpp:7794
#43 0xb6cdd993 in QFrame::event (this=0x9ba9d20, e=0x15addd20) at widgets/qframe.cpp:559
#44 0xb6d7e44d in QAbstractScrollArea::event (this=0x9ba9d20, e=0x15addd20) at widgets/qabstractscrollarea.cpp:918
#45 0xb6f20ff6 in QGraphicsView::event (this=0x9ba9d20, event=0x15addd20) at graphicsview/qgraphicsview.cpp:2854
#46 0xb68ace9c in QApplicationPrivate::notify_helper (this=0x9453aa0, receiver=0x9ba9d20, e=0x15addd20) at kernel/qapplication.cpp:4084
#47 0xb68b5282 in QApplication::notify (this=0x9447f48, receiver=0x9ba9d20, e=0x15addd20) at kernel/qapplication.cpp:4049
#48 0xb770494d in KApplication::notify (this=0x9447f48, receiver=0x9ba9d20, event=0x15addd20) at /build/buildd/kde4libs-4.2.2/kdeui/kernel/kapplication.cpp:307
#49 0xb65ffa3b in QCoreApplication::notifyInternal (this=0x9447f48, receiver=0x9ba9d20, event=0x15addd20) at kernel/qcoreapplication.cpp:602
#50 0xb6600695 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x94142c8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#51 0xb660088d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1132
#52 0xb662b7ef in postEventSourceDispatch (s=0x9455b10) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#53 0xb4f62b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#54 0xb4f660eb in ?? () from /usr/lib/libglib-2.0.so.0
#55 0xb4f66268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#56 0xb662b438 in QEventDispatcherGlib::processEvents (this=0x94170f0, flags={i = -1075884424}) at kernel/qeventdispatcher_glib.cpp:323
#57 0xb694e365 in QGuiEventDispatcherGlib::processEvents (this=0x94170f0, flags={i = -1075884376}) at kernel/qguieventdispatcher_glib.cpp:202
#58 0xb65fe06a in QEventLoop::processEvents (this=0xbfdf4f20, flags={i = -1075884312}) at kernel/qeventloop.cpp:149
#59 0xb65fe4aa in QEventLoop::exec (this=0xbfdf4f20, flags={i = -1075884248}) at kernel/qeventloop.cpp:200
#60 0xb6600959 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#61 0xb68acd17 in QApplication::exec () at kernel/qapplication.cpp:3553
#62 0xb7f7ab56 in kdemain () from /usr/lib/libkdeinit4_plasma.so
#63 0x08048712 in _start ()

@Todor: your backtrace is more like bug 176014 than this one. Could you please post your information in that report? Also, do not forget to mention your Qt version.
Thanks

Plasma crashed at my end in a similar way. 
Fedora 11
KDE 4.2.4

Application: Plasma Workspace (plasma), signal SIGSEGV
0x000000335e4a3e61 in nanosleep () from /lib64/libc.so.6
[Current thread is 1 (Thread 0x7f4f9ff5d820 (LWP 2302))]

Thread 3 (Thread 0x7f4f8a00b910 (LWP 2303)):
#0  0x000000335f00b2f9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x000000390705ad7b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x0000003908081dac in ?? () from /usr/lib64/libQtNetwork.so.4
#3  0x0000003907059cd5 in ?? () from /usr/lib64/libQtCore.so.4
#4  0x000000335f00686a in start_thread () from /lib64/libpthread.so.0
#5  0x000000335e4de25d in clone () from /lib64/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f4f88fee910 (LWP 2304)):
#0  0x000000335f00b2f9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x000000390705ad7b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007f4f8ab62f48 in ?? () from /usr/lib64/kde4/plasma_wallpaper_image.so
#3  0x0000003907059cd5 in ?? () from /usr/lib64/libQtCore.so.4
#4  0x000000335f00686a in start_thread () from /lib64/libpthread.so.0
#5  0x000000335e4de25d in clone () from /lib64/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f4f9ff5d820 (LWP 2302)):
[KCrash Handler]
#5  0x000000390dcc11ad in ?? () from /usr/lib64/libplasma.so.3
#6  0x000000390dcaec81 in Plasma::Applet::focusInEvent(QFocusEvent*) () from /usr/lib64/libplasma.so.3
#7  0x000000390911146a in QGraphicsItem::sceneEvent(QEvent*) () from /usr/lib64/libQtGui.so.4
#8  0x0000003909136377 in QGraphicsScene::setFocusItem(QGraphicsItem*, Qt::FocusReason) () from /usr/lib64/libQtGui.so.4
#9  0x0000003909140407 in ?? () from /usr/lib64/libQtGui.so.4
#10 0x0000003909140fcf in QGraphicsScene::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#11 0x0000003908b8ee2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#12 0x0000003908b95e5e in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#13 0x000000390a004b16 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#14 0x000000390713fcbc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#15 0x000000390914fbf9 in QGraphicsView::mousePressEvent(QMouseEvent*) () from /usr/lib64/libQtGui.so.4
#16 0x0000003908bdd856 in QWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#17 0x0000003908f379c6 in QFrame::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#18 0x0000003909152cab in QGraphicsView::viewportEvent(QEvent*) () from /usr/lib64/libQtGui.so.4
#19 0x000000390713f007 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#20 0x0000003908b8edfc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#21 0x0000003908b96551 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#22 0x000000390a004b16 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#23 0x000000390713fcbc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#24 0x0000003908b95810 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&) () from /usr/lib64/libQtGui.so.4
#25 0x0000003908bfb61e in ?? () from /usr/lib64/libQtGui.so.4
#26 0x0000003908bfa6b9 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/libQtGui.so.4
#27 0x0000003908c223bc in ?? () from /usr/lib64/libQtGui.so.4
#28 0x0000003905437abe in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#29 0x000000390543b278 in ?? () from /lib64/libglib-2.0.so.0
#30 0x000000390543b3a0 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#31 0x00000039071683b6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#32 0x0000003908c21b6e in ?? () from /usr/lib64/libQtGui.so.4
#33 0x000000390713e5f2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#34 0x000000390713e9c4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#35 0x0000003907140b79 in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#36 0x000000390a43436f in kdemain () from /usr/lib64/libkdeinit4_plasma.so
#37 0x000000335e41ea2d in __libc_start_main () from /lib64/libc.so.6
#38 0x0000000000400769 in _start ()

@mandar: your crash is fixed in KDe4.3 ( bug 196196 / bug 194935 ) Thanks

Closing as outdated.