Bug 266272

Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.41 (4.7 >= 20110106) "release 1"
Qt Version: 4.7.1
Operating System: Linux 2.6.37-20-desktop i686
Distribution: "openSUSE 11.4 RC 1 (i586)"

-- Information about the crash:
Today plasma started to crash when attempting to add a new default panel.
The crash is currently 100% reproducable and there is no apparent reason (e.g. SW update) why it started to behave like this..

Custom settings:
I use about four autohiding panels on different screen edges in a dual monitor setup

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma-Desktop-Umgebung (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb2471720 (LWP 7352))]

Thread 3 (Thread 0xabb88b70 (LWP 7353)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb770403e in poll () from /lib/libc.so.6
#2  0xb31f318b in g_poll () from /lib/libglib-2.0.so.0
#3  0xb31e2cc6 in ?? () from /lib/libglib-2.0.so.0
#4  0xb31e304e in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0xb65547b7 in QEventDispatcherGlib::processEvents (this=0x856c4e8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0xb65252bd in QEventLoop::processEvents (this=0xabb882a0, flags=...) at kernel/qeventloop.cpp:149
#7  0xb65254e9 in QEventLoop::exec (this=0xabb882a0, flags=...) at kernel/qeventloop.cpp:201
#8  0xb64267b9 in QThread::exec (this=0x8569580) at thread/qthread.cpp:490
#9  0xb650523d in QInotifyFileSystemWatcherEngine::run (this=0x8569580) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb64293aa in QThreadPrivate::start (arg=0x8569580) at thread/qthread_unix.cpp:285
#11 0xb63aeb05 in start_thread () from /lib/libpthread.so.0
#12 0xb770ed5e in clone () from /lib/libc.so.6

Thread 2 (Thread 0xa8537b70 (LWP 7365)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb63b3105 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb771caec in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libc.so.6
#3  0xb4313e17 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0xb442a1a0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0xb4313e5f in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0xb442a1a0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0xb63aeb05 in start_thread () from /lib/libpthread.so.0
#6  0xb770ed5e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb2471720 (LWP 7352)):
[KCrash Handler]
#7  setWidth (this=0x8a08478, constraint=...) at ../../src/corelib/tools/qsize.h:291
#8  combineSize (this=0x8a08478, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:69
#9  QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x8a08478, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:145
#10 0xb60bc1d4 in QGraphicsLayoutItem::effectiveSizeHint (this=0x89d2ed0, which=Qt::PreferredSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:756
#11 0xb6108eb4 in sizeHint (this=0x89d4968, orientation=Qt::Horizontal, constraint=-1) at graphicsview/qgridlayoutengine.cpp:555
#12 QGridLayoutItem::box (this=0x89d4968, orientation=Qt::Horizontal, constraint=-1) at graphicsview/qgridlayoutengine.cpp:566
#13 0xb610bd7d in QGridLayoutEngine::fillRowData (this=0x8a48a70, rowData=0x8a48b14, styleInfo=..., orientation=Qt::Horizontal) at graphicsview/qgridlayoutengine.cpp:1378
#14 0xb610c9e4 in QGridLayoutEngine::ensureColumnAndRowData (this=0x8a48a70, styleInfo=...) at graphicsview/qgridlayoutengine.cpp:1523
#15 0xb610d4bf in QGridLayoutEngine::sizeHint (this=0x8a48a70, styleInfo=..., which=Qt::MaximumSize) at graphicsview/qgridlayoutengine.cpp:1079
#16 0xb608e17f in QGraphicsGridLayout::sizeHint (this=0x8a1bf10, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicsgridlayout.cpp:645
#17 0xb60bb750 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x8a489c0, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:159
#18 0xb60bc1d4 in QGraphicsLayoutItem::effectiveSizeHint (this=0x8a1bf10, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:756
#19 0xb60ff5ec in QGraphicsWidget::sizeHint (this=0x8a1d0d8, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicswidget.cpp:729
#20 0xb60bb817 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x8a48900, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:165
#21 0xb60bc1d4 in QGraphicsLayoutItem::effectiveSizeHint (this=0x8a1d0e8, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:756
#22 0xb60bc496 in QGraphicsLayoutItem::minimumSize (this=0x8a1d0e8) at graphicsview/qgraphicslayoutitem.cpp:464
#23 0xb746cf75 in Plasma::PopupAppletPrivate::popupConstraintsEvent (this=0x89baaf8, constraints=...) at /usr/src/debug/kdelibs-4.6.41_20110202/plasma/popupapplet.cpp:252
#24 0xb740a9e2 in Plasma::Applet::flushPendingConstraintsEvents (this=0x8a16910) at /usr/src/debug/kdelibs-4.6.41_20110202/plasma/applet.cpp:1338
#25 0xb740b7d2 in Plasma::Applet::timerEvent (this=0x8a16910, event=0xbfbe294c) at /usr/src/debug/kdelibs-4.6.41_20110202/plasma/applet.cpp:2427
#26 0xb746c8d5 in Plasma::PopupApplet::timerEvent (this=0x8a16910, event=0xbfbe294c) at /usr/src/debug/kdelibs-4.6.41_20110202/plasma/popupapplet.cpp:610
#27 0xb653b3f4 in QObject::event (this=0x8a16910, e=0xbfbe294c) at kernel/qobject.cpp:1175
#28 0xb60ffe44 in QGraphicsWidget::event (this=0x8a16910, event=0xbfbe294c) at graphicsview/qgraphicswidget.cpp:1407
#29 0xb5a33414 in QApplicationPrivate::notify_helper (this=0x80a7ef0, receiver=0x8a16910, e=0xbfbe294c) at kernel/qapplication.cpp:4445
#30 0xb5a3c0c7 in QApplication::notify (this=0x80835a0, receiver=0x8a16910, e=0xbfbe294c) at kernel/qapplication.cpp:3845
#31 0xb6b9d851 in KApplication::notify (this=0x80835a0, receiver=0x8a16910, event=0xbfbe294c) at /usr/src/debug/kdelibs-4.6.41_20110202/kdeui/kernel/kapplication.cpp:311
#32 0xb6525fde in QCoreApplication::notifyInternal (this=0x80835a0, receiver=0x8a16910, event=0xbfbe294c) at kernel/qcoreapplication.cpp:732
#33 0xb6557379 in sendEvent (this=0x80a97a4) at kernel/qcoreapplication.h:215
#34 QTimerInfoList::activateTimers (this=0x80a97a4) at kernel/qeventdispatcher_unix.cpp:618
#35 0xb6554042 in timerSourceDispatch (source=0x80a9770) at kernel/qeventdispatcher_glib.cpp:184
#36 0xb31e2589 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#37 0xb31e2d90 in ?? () from /lib/libglib-2.0.so.0
#38 0xb31e304e in g_main_context_iteration () from /lib/libglib-2.0.so.0
#39 0xb655476b in QEventDispatcherGlib::processEvents (this=0x807d128, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#40 0xb5ae955a in QGuiEventDispatcherGlib::processEvents (this=0x807d128, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#41 0xb65252bd in QEventLoop::processEvents (this=0xbfbe2bf4, flags=...) at kernel/qeventloop.cpp:149
#42 0xb65254e9 in QEventLoop::exec (this=0xbfbe2bf4, flags=...) at kernel/qeventloop.cpp:201
#43 0xb6529f90 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#44 0xb5a31104 in QApplication::exec () at kernel/qapplication.cpp:3719
#45 0xb77dd7da in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#46 0x0804861b in _start ()

This bug may be a duplicate of or related to bug 248834.

Possible duplicates by query: bug 248834.

Reported using DrKonqi