[kde] [Bug 366071] New: Crash on drag titlebar items

via KDE Bugzilla bugzilla_noreply at kde.org
Mon Jul 25 06:23:23 BST 2016 

https://bugs.kde.org/show_bug.cgi?id=366071

            Bug ID: 366071
           Summary: Crash on drag titlebar items
           Product: kde
           Version: unspecified
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: zac at sietecfast.com

Application: kcmshell5 (5.7.0)

Qt Version: 5.6.1
Frameworks Version: 5.24.0
Operating System: Linux 4.6.4-1-default x86_64
Distribution: "openSUSE Tumbleweed (20160718) (x86_64)"

-- Information about the crash:
Was dragging the close button to the far left instead of right always crashes
when attempting to go all the way left.  Possibly an array out of bounds trying
to to go a non-existing entry??

The crash can be reproduced sometimes.

-- Backtrace:
Application: System Settings Module (kcmshell5), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fbe05a708c0 (LWP 18893))]

Thread 6 (Thread 0x7fbdc59a6700 (LWP 19286)):
#0  0x00007fbe053e00a3 in select () at /lib64/libc.so.6
#1  0x00007fbe02a8030f in qt_safe_select(int, fd_set*, fd_set*, fd_set*,
timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fbe02a81db4 in
QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>,
timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007fbe02a822ca in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib64/libQt5Core.so.5
#4  0x00007fbe02a2c76a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib64/libQt5Core.so.5
#5  0x00007fbe028523b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fbe013d11e5 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fbe028572d8 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fbdff83c474 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbe053e73ed in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fbdcd63e700 (LWP 19285)):
#0  0x00007fbe053e00a3 in select () at /lib64/libc.so.6
#1  0x00007fbe02a8030f in qt_safe_select(int, fd_set*, fd_set*, fd_set*,
timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fbe02a81db4 in
QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>,
timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007fbe02a822ca in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib64/libQt5Core.so.5
#4  0x00007fbe02a2c76a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib64/libQt5Core.so.5
#5  0x00007fbe028523b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fbe013d11e5 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fbe028572d8 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fbdff83c474 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbe053e73ed in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fbdd66c8700 (LWP 19101)):
#0  0x00007fbe02a81f80 in
QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>,
timespec*) () at /usr/lib64/libQt5Core.so.5
#1  0x00007fbe02a822ca in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib64/libQt5Core.so.5
#2  0x00007fbe02a2c76a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib64/libQt5Core.so.5
#3  0x00007fbe028523b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#4  0x00007fbe013d11e5 in  () at /usr/lib64/libQt5Qml.so.5
#5  0x00007fbe028572d8 in  () at /usr/lib64/libQt5Core.so.5
#6  0x00007fbdff83c474 in start_thread () at /lib64/libpthread.so.0
#7  0x00007fbe053e73ed in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fbdee379700 (LWP 18927)):
#0  0x00007fbe053e00a3 in select () at /lib64/libc.so.6
#1  0x00007fbe02a8030f in qt_safe_select(int, fd_set*, fd_set*, fd_set*,
timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fbe02a81db4 in
QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>,
timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007fbe02a822ca in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib64/libQt5Core.so.5
#4  0x00007fbe02a2c76a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib64/libQt5Core.so.5
#5  0x00007fbe028523b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fbe046f59b5 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007fbe028572d8 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fbdff83c474 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fbe053e73ed in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fbdf2031700 (LWP 18908)):
#0  0x00007fbe053dea1d in poll () at /lib64/libc.so.6
#1  0x00007fbe000b4410 in  () at /usr/lib64/libxcb.so.1
#2  0x00007fbe000b61a9 in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007fbdf459c7b9 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007fbe028572d8 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007fbdff83c474 in start_thread () at /lib64/libpthread.so.0
#6  0x00007fbe053e73ed in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fbe05a708c0 (LWP 18893)):
[KCrash Handler]
#6  0x00007fbe028c5fb0 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007fbe029d7dd4 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fbe029d88b9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fbe029d26b2 in QAbstractItemModelPrivate::itemsMoved(QModelIndex
const&, int, int, QModelIndex const&, int, Qt::Orientation) () at
/usr/lib64/libQt5Core.so.5
#10 0x00007fbe029d561b in QAbstractItemModel::endMoveRows() () at
/usr/lib64/libQt5Core.so.5
#11 0x00007fbdec536a6a in  () at /usr/lib64/qt5/plugins/kcm_kwindecoration.so
#12 0x00007fbdec537183 in  () at /usr/lib64/qt5/plugins/kcm_kwindecoration.so
#13 0x00007fbe0138a139 in  () at /usr/lib64/libQt5Qml.so.5
#14 0x00007fbe01310b54 in  () at /usr/lib64/libQt5Qml.so.5
#15 0x00007fbe01312758 in  () at /usr/lib64/libQt5Qml.so.5
#16 0x00007fbe0131329d in QV4::QObjectMethod::callInternal(QV4::CallData*)
const () at /usr/lib64/libQt5Qml.so.5
#17 0x00007fbe01328710 in QV4::Runtime::callProperty(QV4::ExecutionEngine*,
int, QV4::CallData*) () at /usr/lib64/libQt5Qml.so.5
#18 0x00007fbde415d363 in  ()
#19 0x00007fff9ca9daf0 in  ()
#20 0x00007fbe02a5bdc0 in QMetaObject::activate(QObject*, int, int, void**) ()
at /usr/lib64/libQt5Core.so.5
#21 0x00007fbe012c7afb in  () at /usr/lib64/libQt5Qml.so.5
#22 0x00007fbe013b5518 in QQmlJavaScriptExpression::evaluate(QV4::CallData*,
bool*) () at /usr/lib64/libQt5Qml.so.5
#23 0x00007fbe0135b5d4 in QQmlBoundSignalExpression::evaluate(void**) () at
/usr/lib64/libQt5Qml.so.5
#24 0x00007fbe0135c830 in  () at /usr/lib64/libQt5Qml.so.5
#25 0x00007fbe01393454 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*,
void**) () at /usr/lib64/libQt5Qml.so.5
#26 0x00007fbe0133dde4 in QQmlData::signalEmitted(QAbstractDeclarativeData*,
QObject*, int, void**) () at /usr/lib64/libQt5Qml.so.5
#27 0x00007fbe02a5b910 in QMetaObject::activate(QObject*, int, int, void**) ()
at /usr/lib64/libQt5Core.so.5
#28 0x00007fbe019f69f2 in  () at /usr/lib64/libQt5Quick.so.5
#29 0x00007fbe0196fa67 in  () at /usr/lib64/libQt5Quick.so.5
#30 0x00007fbe01895a68 in QQuickItem::event(QEvent*) () at
/usr/lib64/libQt5Quick.so.5
#31 0x00007fbe039d3aec in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib64/libQt5Widgets.so.5
#32 0x00007fbe039d8f8f in QApplication::notify(QObject*, QEvent*) () at
/usr/lib64/libQt5Widgets.so.5
#33 0x00007fbe02a2ea20 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib64/libQt5Core.so.5
#34 0x00007fbe018a50e0 in QQuickWindow::sendEvent(QQuickItem*, QEvent*) () at
/usr/lib64/libQt5Quick.so.5
#35 0x00007fbe018ac329 in
QQuickWindowPrivate::deliverDragEvent(QQuickDragGrabber*, QEvent*) () at
/usr/lib64/libQt5Quick.so.5
#36 0x00007fbe0196d8f2 in  () at /usr/lib64/libQt5Quick.so.5
#37 0x00007fbe019f61ea in  () at /usr/lib64/libQt5Quick.so.5
#38 0x00007fbe019f6730 in  () at /usr/lib64/libQt5Quick.so.5
#39 0x00007fbe0138a139 in  () at /usr/lib64/libQt5Qml.so.5
#40 0x00007fbe01310e7b in  () at /usr/lib64/libQt5Qml.so.5
#41 0x00007fbe01312699 in  () at /usr/lib64/libQt5Qml.so.5
#42 0x00007fbe0131329d in QV4::QObjectMethod::callInternal(QV4::CallData*)
const () at /usr/lib64/libQt5Qml.so.5
#43 0x00007fbe01328710 in QV4::Runtime::callProperty(QV4::ExecutionEngine*,
int, QV4::CallData*) () at /usr/lib64/libQt5Qml.so.5
#44 0x00007fbde4164215 in  ()
#45 0x0000000000000000 in  ()

Reported using DrKonqi

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