https://bugs.kde.org/show_bug.cgi?id=461436

            Bug ID: 461436
           Summary: Krita segfault after several copy-from-old-file-to-new
                    operations
    Classification: Applications
           Product: krita
           Version: unspecified
          Platform: Archlinux
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: General
          Assignee: krita-bugs-n...@kde.org
          Reporter: eshilin...@gmail.com
  Target Milestone: ---

Application: krita (5.1.2)

Qt Version: 5.15.7
Frameworks Version: 5.99.0
Operating System: Linux 6.0.6-arch1-1 x86_64
Windowing System: X11
Distribution: "Arch Linux"
DrKonqi: 5.26.2 [KCrashBackend]

-- Information about the crash:
Krita 5.1.2-1
Wayland
Three monitors: 4K Huawei MateView28, Laptop FHD screen and Screen drawing
tablet Huion Kamvas 13(mirrored with laptop screen)

Reproduce a bug:
* open some krita document
* create new document
* copy some region from old document to new several times
After some short time it krashes

The crash can be reproduced every time.

-- Backtrace:
Application: Krita (krita), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f90792dd4dd in QSortFilterProxyModel::data(QModelIndex const&, int)
const () at /usr/lib/libQt5Core.so.5
#5  0x00007f9034cef025 in  () at /usr/lib/kritaplugins/kritalayerdocker.so
#6  0x00007f9034ce550a in  () at /usr/lib/kritaplugins/kritalayerdocker.so
#7  0x00007f9079334c00 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f9079334c00 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f9079336faf in QTimer::timeout(QTimer::QPrivateSignal) () at
/usr/lib/libQt5Core.so.5
#10 0x00007f9079327b86 in QObject::event(QEvent*) () at
/usr/lib/libQt5Core.so.5
#11 0x00007f9079d78b1c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt5Widgets.so.5
#12 0x00007f907afdcd8f in KisApplication::notify(QObject*, QEvent*) () at
/usr/lib/libkritaui.so.18
#13 0x00007f9079303f98 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/libQt5Core.so.5
#14 0x00007f907934e493 in QTimerInfoList::activateTimers() () at
/usr/lib/libQt5Core.so.5
#15 0x00007f907934ead2 in  () at /usr/lib/libQt5Core.so.5
#16 0x00007f90769a387b in g_main_context_dispatch () at
/usr/lib/libglib-2.0.so.0
#17 0x00007f90769fa279 in  () at /usr/lib/libglib-2.0.so.0
#18 0x00007f90769a2132 in g_main_context_iteration () at
/usr/lib/libglib-2.0.so.0
#19 0x00007f907934ec4c in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#20 0x00007f90792fc73c in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#21 0x00007f9079307269 in QCoreApplication::exec() () at
/usr/lib/libQt5Core.so.5
#22 0x000055ab0a85789f in  ()
#23 0x00007f9078c5c290 in  () at /usr/lib/libc.so.6
#24 0x00007f9078c5c34a in __libc_start_main () at /usr/lib/libc.so.6
#25 0x000055ab0a859a55 in  ()
[Inferior 1 (process 349914) detached]

Reported using DrKonqi

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