https://bugs.kde.org/show_bug.cgi?id=452705

            Bug ID: 452705
           Summary: Crash while editing selection in Krita
           Product: krita
           Version: unspecified
          Platform: Ubuntu Packages
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: General
          Assignee: krita-bugs-n...@kde.org
          Reporter: bryn.dickin...@gmail.com
  Target Milestone: ---

Application: krita (5.0.1)

Qt Version: 5.15.2
Frameworks Version: 5.86.0
Operating System: Linux 5.13.0-39-generic x86_64
Windowing System: X11
Drkonqi Version: 5.22.5
Distribution: Ubuntu 21.10

-- Information about the crash:
- What I was doing when the application crashed:
I was painting normally in a 2480x3508 painting with only a handful of layers,
most disabled, with normal blending modes. The file contained a set of five
embedded reference images, some with alpha channels. There were no animation
frames. I switched to the freehand selection tool and started to draw a
selection, and Krita abruptly crashed. I was nowhere near any sort of RAM limit
at this point. Fortunately thanks to frequent autosaves, minimal progress was
lost.

This is not the first time a similar crash has happened recently. The crash
comes unpredictably and is difficult to reproduce. Using the selection tool may
be a red herring but as far as I can recall that has been a common element in
each case.

The version of Krita I am using is 3:5.0.1-3~impish from the kritalime
repository.

The crash can be reproduced sometimes.

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

[KCrash Handler]
#4  0x00007f78d9c2fe8c in QMetaObject::cast(QObject const*) const () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f78da88858c in QMdiArea::eventFilter(QObject*, QEvent*) () at
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#6  0x00007f78d9c26d8e in
QCoreApplicationPrivate::sendThroughApplicationEventFilters(QObject*, QEvent*)
() at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f78da7136f0 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007f78db8f7062 in KisApplication::notify(QObject*, QEvent*) () at
/lib/x86_64-linux-gnu/libkritaui.so.17
#9  0x00007f78d9c2716a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f78d9c2a257 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f78d9c80ef7 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f78d71368bb in g_main_context_dispatch () at
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007f78d7189f08 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007f78d7134003 in g_main_context_iteration () at
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007f78d9c80548 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f78d9c25a9b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f78d9c2e024 in QCoreApplication::exec() () at
/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x000055ada6a0c30c in  ()
#19 0x00007f78d953cfd0 in __libc_start_call_main
(main=main@entry=0x55ada6a09b60, argc=argc@entry=1,
argv=argv@entry=0x7ffdbc37a8f8) at ../sysdeps/nptl/libc_start_call_main.h:58
#20 0x00007f78d953d07d in __libc_start_main_impl (main=0x55ada6a09b60, argc=1,
argv=0x7ffdbc37a8f8, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffdbc37a8e8) at ../csu/libc-start.c:409
#21 0x000055ada6a0e055 in  ()
[Inferior 1 (process 10955) detached]

Possible duplicates by query: bug 452621, bug 452546, bug 452481, bug 452374,
bug 452331.

Reported using DrKonqi

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