| Summary: | Plasma crashes on screen resize (RandR 1.1, inside NX session) | ||
|---|---|---|---|
| Product: | [Unmaintained] plasma4 | Reporter: | Josh Berry <des> |
| Component: | general | Assignee: | Plasma Bugs List <plasma-bugs> |
| Status: | RESOLVED FIXED | ||
| Severity: | crash | ||
| Priority: | NOR | ||
| Version First Reported In: | unspecified | ||
| Target Milestone: | --- | ||
| Platform: | Compiled Sources | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
SVN commit 751884 by chani: don't crash if view() is null is there something better we can return in this situation? BUG: 154486 M +3 -2 systemtray.cpp WebSVN link: http://websvn.kde.org/?view=rev&revision=751884 Hmm.. is the panel being destroyed and recreated on a screen resize? That's about the only case where view() could be null. Your fix is the only way I could see to work around it too. scene() is *never* guaranteed to be valid and must always be checked before usage. the fix is correct. |
Version: (using KDE Devel) Installed from: Compiled sources Compiler: gcc 4.2 OS: Linux I am using FreeNX and the NoMachine NX client to experiment with accessing KDE4 sessions remotely. NX uses RandR 1.1 (as reported by xrandr --version). I am running r751543 of kdelibs/kdebase. When I resize my NXclient window (that is, when I change the display size), plasma crashes with the following backtrace: Using host libthread_db library "/lib/libthread_db.so.1". [Thread debugging using libthread_db enabled] [New Thread 0x2b4b59d70880 (LWP 31079)] [New Thread 0x40800950 (LWP 31083)] [KCrash handler] #5 QGraphicsView::mapToScene (this=0x0, point=@0x7fff59566840) at /home/des/Code/kde/qt-copy/src/gui/graphicsview/qgraphicsview.h:258 #6 0x00002b4b562fda36 in QGraphicsView::mapToScene (this=0x0, rect=@0x7fff59566960) at /home/des/Code/kde/qt-copy/src/gui/graphicsview/qgraphicsview.cpp:1995 #7 0x00002b4b51a5eaf7 in Plasma::Widget::mapFromView (this=0x85d0c0, view=0x0, rect=@0x7fff59566960) at /home/des/Code/kde/kdebase/workspace/libs/plasma/widgets/widget.cpp:105 #8 0x00002aaab044bd7b in SystemTray::contentSizeHint (this=0x85d0c0) at /home/des/Code/kde/kdebase/workspace/plasma/applets/systemtray/systemtray.cpp:45 #9 0x00002b4b519ff992 in Plasma::Applet::sizeHint (this=0x85d0c0) at /home/des/Code/kde/kdebase/workspace/libs/plasma/applet.cpp:810 #10 0x00002b4b51a34bdc in Plasma::BoxLayout::Private::calculateSize<double const&> (this=0x816650, sizeType=Plasma::BoxLayout::Private::HintSize, dir=Qt::Vertical, op=0x2b4b51a03680 <double const& qMax<double>(double const&, double const&)>) at /home/des/Code/kde/kdebase/workspace/libs/plasma/layouts/boxlayout.cpp:200 #11 0x00002b4b51a34d13 in Plasma::BoxLayout::Private::calculateSize ( this=0x816650, calculateSizeType=Plasma::BoxLayout::Private::HintSize) at /home/des/Code/kde/kdebase/workspace/libs/plasma/layouts/boxlayout.cpp:226 #12 0x00002b4b51a32df0 in Plasma::BoxLayout::sizeHint (this=0x7be6b0) at /home/des/Code/kde/kdebase/workspace/libs/plasma/layouts/boxlayout.cpp:462 #13 0x00002b4b519ff82f in Plasma::Applet::contentSizeHint (this=0x86b2f0) at /home/des/Code/kde/kdebase/workspace/libs/plasma/applet.cpp:961 #14 0x00002b4b519ff992 in Plasma::Applet::sizeHint (this=0x86b2f0) at /home/des/Code/kde/kdebase/workspace/libs/plasma/applet.cpp:810 #15 0x00002b4b51a5defc in Plasma::Widget::updateGeometry (this=0x86b2f0) at /home/des/Code/kde/kdebase/workspace/libs/plasma/widgets/widget.cpp:287 #16 0x00002b4b51a5cde3 in Plasma::Widget::setMaximumSize (this=0x86b2f0, size=@0x7fff59566ec0) at /home/des/Code/kde/kdebase/workspace/libs/plasma/widgets/widget.cpp:205 #17 0x00002aaaaf640f17 in Panel::constraintsUpdated (this=0x86b2f0, constraints=@0x7fff595671c0) at /home/des/Code/kde/kdebase/workspace/plasma/containments/panel/panel.cpp:69 #18 0x00002b4b51a00452 in Plasma::Applet::flushUpdatedConstraints ( this=0x86b2f0) at /home/des/Code/kde/kdebase/workspace/libs/plasma/applet.cpp:769 #19 0x00002b4b51a01843 in Plasma::Applet::qt_metacall (this=0x86b2f0, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0x7fff595677d0) at /home/des/Code/kde/build/kdebase/workspace/libs/plasma/applet.moc:105 #20 0x00002b4b51a248d3 in Plasma::Containment::qt_metacall (this=0x86b2f0, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0x7fff595677d0) at /home/des/Code/kde/build/kdebase/workspace/libs/plasma/containment.moc:86 #21 0x00002aaaaf63f6f3 in Panel::qt_metacall (this=0x86b2f0, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0x7fff595677d0) at /home/des/Code/kde/build/kdebase/workspace/plasma/containments/panel/panel.moc:58 #22 0x00002b4b553d86cc in QMetaObject::activate (sender=0xbaa050, from_signal_index=4, to_signal_index=4, argv=0x7fff59566960) at /home/des/Code/kde/qt-copy/src/corelib/kernel/qobject.cpp:3087 #23 0x00002b4b553dd767 in QSingleShotTimer::timerEvent (this=0xbaa050) at /home/des/Code/kde/qt-copy/src/corelib/kernel/qtimer.cpp:296 #24 0x00002b4b553d6028 in QObject::event (this=0xbaa050, e=0x7fff59566960) at /home/des/Code/kde/qt-copy/src/corelib/kernel/qobject.cpp:1095 #25 0x00002b4b55ef19d2 in QApplicationPrivate::notify_helper (this=0x63c870, receiver=0xbaa050, e=0x7fff59567e30) at /home/des/Code/kde/qt-copy/src/gui/kernel/qapplication.cpp:3556 #26 0x00002b4b55ef75af in QApplication::notify (this=0x61fb10, receiver=0xbaa050, e=0x7fff59567e30) at /home/des/Code/kde/qt-copy/src/gui/kernel/qapplication.cpp:3497 #27 0x00002b4b52a5ddb2 in KApplication::notify (this=0x61fb10, receiver=0xbaa050, event=0x7fff59567e30) at /home/des/Code/kde/kdelibs/kdeui/kernel/kapplication.cpp:319 #28 0x00002b4b553c99be in QCoreApplication::notifyInternal (this=0x61fb10, receiver=0xbaa050, event=0x7fff59567e30) at /home/des/Code/kde/qt-copy/src/corelib/kernel/qcoreapplication.cpp:530 #29 0x00002b4b553e78d5 in QTimerInfoList::activateTimers (this=0x640320) at ../../include/QtCore/../../../../qt-copy/src/corelib/kernel/qcoreapplication.h:200 #30 0x00002b4b553e57ab in timerSourceDispatch (source=<value optimized out>) at /home/des/Code/kde/qt-copy/src/corelib/kernel/qeventdispatcher_glib.cpp:155 #31 0x00002b4b58eec682 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #32 0x00002b4b58eecee5 in ?? () from /usr/lib/libglib-2.0.so.0 #33 0x00002b4b58eed407 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0 #34 0x00002b4b553e5b9b in QEventDispatcherGlib::processEvents (this=0x63c1e0, flags=<value optimized out>) at /home/des/Code/kde/qt-copy/src/corelib/kernel/qeventdispatcher_glib.cpp:338 #35 0x00002b4b55f580a4 in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at /home/des/Code/kde/qt-copy/src/gui/kernel/qguieventdispatcher_glib.cpp:191 #36 0x00002b4b553c913c in QEventLoop::processEvents ( this=<value optimized out>, flags=<value optimized out>) at /home/des/Code/kde/qt-copy/src/corelib/kernel/qeventloop.cpp:140 #37 0x00002b4b553c9225 in QEventLoop::exec (this=0x7fff595680b0, flags=@0x7fff595680c0) at /home/des/Code/kde/qt-copy/src/corelib/kernel/qeventloop.cpp:182 #38 0x00002b4b553cb3d7 in QCoreApplication::exec () at /home/des/Code/kde/qt-copy/src/corelib/kernel/qcoreapplication.cpp:759 #39 0x00002b4b517675af in kdemain (argc=1, argv=0x7fff59568438) at /home/des/Code/kde/kdebase/workspace/plasma/plasma/main.cpp:54 #40 0x000000000040097b in main (argc=1, argv=0x7fff59568438) at /home/des/Code/kde/build/kdebase/workspace/plasma/plasma/plasma-qgv_dummy.cpp:3 #0 0x00002b4b5796cc41 in nanosleep () from /lib64/libc.so.6