https://bugs.kde.org/show_bug.cgi?id=469140

            Bug ID: 469140
           Summary: Crash in resource thumbnail cache
    Classification: Applications
           Product: krita
           Version: unspecified
          Platform: Compiled Sources
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: General
          Assignee: krita-bugs-n...@kde.org
          Reporter: griffinval...@gmail.com
  Target Milestone: ---

Application: krita (5.2.0-prealpha (git 227ee15))

Qt Version: 5.15.8
Frameworks Version: 5.102.0
Operating System: Linux 5.15.0-58-generic x86_64
Windowing System: X11
Distribution: KDE neon 5.26
DrKonqi: 5.26.5 [KCrashBackend]

-- Information about the crash:
I was resizing the window (while testing something in the text-branch) and
suddenly this crash appeared. It seems to be in the thumbnail cache...

The crash can be reproduced sometimes.

-- Backtrace:
Application: Krita (krita), signal: Aborted

[KCrash Handler]
#4  __pthread_kill_implementation (no_tid=0, signo=6, threadid=139818780805184)
at ./nptl/pthread_kill.c:44
#5  __pthread_kill_internal (signo=6, threadid=139818780805184) at
./nptl/pthread_kill.c:78
#6  __GI___pthread_kill (threadid=139818780805184, signo=signo@entry=6) at
./nptl/pthread_kill.c:89
#7  0x00007f2a1dc5e476 in __GI_raise (sig=sig@entry=6) at
../sysdeps/posix/raise.c:26
#8  0x00007f2a1dc447f3 in __GI_abort () at ./stdlib/abort.c:79
#9  0x00007f2a1e121ba3 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f2a1f40a4a9 in kis_assert_common(char const*, char const*, int,
bool, bool) (assertion=<optimized out>, file=<optimized out>, line=<optimized
out>, abort=<optimized out>, isIgnorable=<optimized out>) at
/home/wolthera/krita/src/libs/global/kis_assert.cpp:90
#11 0x00007f2a1f58fbe8 in KisResourceThumbnailCache::getImage(QModelIndex
const&, QSize, Qt::AspectRatioMode, Qt::TransformationMode)
(this=0x7f2a1f5d2d18 <(anonymous
namespace)::Q_QGS_s_instance::innerFunction()::holder>, index=..., size=...,
size@entry=..., aspectMode=aspectMode@entry=Qt::IgnoreAspectRatio,
transformMode=transformMode@entry=Qt::FastTransformation) at
/home/wolthera/krita/src/libs/resources/KisResourceThumbnailCache.cpp:193
#12 0x00007f2a20590aef in KisPresetDelegate::paint(QPainter*,
QStyleOptionViewItem const&, QModelIndex const&) const (this=0x561f198a08e0,
painter=0x7ffde5c3dbe0, option=..., index=...) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qsize.h:125
#13 0x00007f2a1f151409 in QListView::paintEvent(QPaintEvent*) () at
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f2a1eed597e in QWidget::event(QEvent*) () at
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f2a1ef83cf2 in QFrame::event(QEvent*) () at
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f2a1e34bdda in
QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f2a1ee92782 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f2a20735b05 in KisApplication::notify(QObject*, QEvent*)
(this=0x7ffde5c3eb50, receiver=0x561f17f3b7c0, event=0x7ffde5c3e010) at
/home/wolthera/krita/src/libs/ui/KisApplication.cpp:768
#19 0x00007f2a1e34c07a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f2a1eecd81a in QWidgetPrivate::sendPaintEvent(QRegion const&) () at
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f2a1eece0b2 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion
const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*,
QWidgetRepaintManager*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f2a1eea39da in  () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f2a1eed60cd in QWidget::event(QEvent*) () at
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f2a1ef83cf2 in QFrame::event(QEvent*) () at
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f2a1ee92793 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007f2a20735b05 in KisApplication::notify(QObject*, QEvent*)
(this=0x7ffde5c3eb50, receiver=0x561f19bc1aa0, event=0x561f17867700) at
/home/wolthera/krita/src/libs/ui/KisApplication.cpp:768
#27 0x00007f2a1e34c07a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f2a1e34f167 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f2a1e3a6487 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f2a1b643d3b in g_main_context_dispatch () at
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f2a1b6986c8 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f2a1b6413e3 in g_main_context_iteration () at
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f2a1e3a5ad8 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f2a1e34a99b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f2a1e352f34 in QCoreApplication::exec() () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x0000561f10bab73e in main(int, char**) (argc=<optimized out>,
argv=<optimized out>) at /home/wolthera/krita/src/krita/main.cc:717
[Inferior 1 (process 3533296) detached]

Reported using DrKonqi

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