https://bugs.kde.org/show_bug.cgi?id=446794

            Bug ID: 446794
           Summary: Crash when trying to lock brush settings.
           Product: krita
           Version: unspecified
          Platform: Neon Packages
                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 (5.0.0-beta5 (git 6749d05))

Qt Version: 5.15.3
Frameworks Version: 5.88.0
Operating System: Linux 5.4.0-91-generic x86_64
Windowing System: X11
Distribution: KDE neon User - Plasma 25th Anniversary Edition
DrKonqi: 5.23.3 [KCrashBackend]

-- Information about the crash:
- What I was doing when the application crashed:
I was following the resource testing.
1. "Brush Editor (Click on the lock icon in Brush Editor)" (I selected
'opacity')
2. Adjust opacity.
3. This crash happened.

The crash can be reproduced sometimes.

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

[New LWP 3666205]
[New LWP 3666206]
[New LWP 3666207]
[New LWP 3666208]
[New LWP 3666209]
[New LWP 3666467]
[New LWP 3666477]
[New LWP 3666494]
[New LWP 3666495]
[New LWP 3666500]
[New LWP 3666501]
[New LWP 3690534]
[New LWP 3690535]
[New LWP 3690912]
[New LWP 3690913]
[New LWP 3690914]
[New LWP 3690915]
[New LWP 3691913]
[New LWP 3691914]
[New LWP 3691915]
[New LWP 3691916]
[New LWP 3691917]
[New LWP 3691918]
[New LWP 3691919]
[New LWP 3691920]
[New LWP 3691921]
[New LWP 3691922]
[New LWP 3691955]
[New LWP 3691956]
[New LWP 3691957]
[New LWP 3691958]
[New LWP 3691959]
[New LWP 3691960]
[New LWP 3691961]
[New LWP 3691962]
[New LWP 3691984]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f1f0edfaaff in __GI___poll (fds=0x7ffc0811fd78, nfds=1, timeout=1000) at
../sysdeps/unix/sysv/linux/poll.c:29
__preamble__
[Current thread is 1 (Thread 0x7f1f09a2ef80 (LWP 3666176))]

Thread 37 (Thread 0x7f1e227fc700 (LWP 3691984)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e227fbc90, clockid=<optimized out>, expected=0,
futex_word=0x7f1ec400b500) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e227fbc90, clockid=<optimized
out>, mutex=0x7f1ec400b4b0, cond=0x7f1ec400b4d8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1ec400b4d8, mutex=0x7f1ec400b4b0,
abstime=0x7f1e227fbc90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 36 (Thread 0x7f1e22ffd700 (LWP 3691962)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e22ffcc90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e1c0147e4) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e22ffcc90, clockid=<optimized
out>, mutex=0x7f1e1c014790, cond=0x7f1e1c0147b8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e1c0147b8, mutex=0x7f1e1c014790,
abstime=0x7f1e22ffcc90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 35 (Thread 0x7f1e237fe700 (LWP 3691961)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e237fdc90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e1c008c30) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e237fdc90, clockid=<optimized
out>, mutex=0x7f1e1c008be0, cond=0x7f1e1c008c08) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e1c008c08, mutex=0x7f1e1c008be0,
abstime=0x7f1e237fdc90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 34 (Thread 0x7f1e23fff700 (LWP 3691960)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e23ffec90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e1c0091e4) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e23ffec90, clockid=<optimized
out>, mutex=0x7f1e1c009190, cond=0x7f1e1c0091b8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e1c0091b8, mutex=0x7f1e1c009190,
abstime=0x7f1e23ffec90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 33 (Thread 0x7f1e488f8700 (LWP 3691959)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e488f7c90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e1c0067c0) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e488f7c90, clockid=<optimized
out>, mutex=0x7f1e1c006770, cond=0x7f1e1c006798) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e1c006798, mutex=0x7f1e1c006770,
abstime=0x7f1e488f7c90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 32 (Thread 0x7f1e4f7fe700 (LWP 3691958)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e4f7fdc90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e3000a7c4) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e4f7fdc90, clockid=<optimized
out>, mutex=0x7f1e3000a770, cond=0x7f1e3000a798) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e3000a798, mutex=0x7f1e3000a770,
abstime=0x7f1e4f7fdc90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 31 (Thread 0x7f1e4ffff700 (LWP 3691957)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e4fffec90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e341000e0) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e4fffec90, clockid=<optimized
out>, mutex=0x7f1e34100090, cond=0x7f1e341000b8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e341000b8, mutex=0x7f1e34100090,
abstime=0x7f1e4fffec90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 30 (Thread 0x7f1e7f7ff700 (LWP 3691956)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e7f7fec90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e341003d4) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e7f7fec90, clockid=<optimized
out>, mutex=0x7f1e34100380, cond=0x7f1e341003a8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e341003a8, mutex=0x7f1e34100380,
abstime=0x7f1e7f7fec90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 29 (Thread 0x7f1e85499700 (LWP 3691955)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e85498c90, clockid=<optimized out>, expected=0,
futex_word=0x557dff5828f0) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e85498c90, clockid=<optimized
out>, mutex=0x557dff5828a0, cond=0x557dff5828c8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x557dff5828c8, mutex=0x557dff5828a0,
abstime=0x7f1e85498c90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 28 (Thread 0x7f1e85c9a700 (LWP 3691922)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e85c99c90, clockid=<optimized out>, expected=0,
futex_word=0x557dfc7d3da0) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e85c99c90, clockid=<optimized
out>, mutex=0x557dfc7d3d50, cond=0x557dfc7d3d78) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x557dfc7d3d78, mutex=0x557dfc7d3d50,
abstime=0x7f1e85c99c90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 27 (Thread 0x7f1e8783f700 (LWP 3691921)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e8783ec90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e580e77b0) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e8783ec90, clockid=<optimized
out>, mutex=0x7f1e580e7760, cond=0x7f1e580e7788) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e580e7788, mutex=0x7f1e580e7760,
abstime=0x7f1e8783ec90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 26 (Thread 0x7f1e9ecfc700 (LWP 3691920)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e9ecfbc90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e58070830) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e9ecfbc90, clockid=<optimized
out>, mutex=0x7f1e580707e0, cond=0x7f1e58070808) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e58070808, mutex=0x7f1e580707e0,
abstime=0x7f1e9ecfbc90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7f1ea1f22700 (LWP 3691919)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1ea1f21c90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e580e7614) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1ea1f21c90, clockid=<optimized
out>, mutex=0x7f1e580e75c0, cond=0x7f1e580e75e8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e580e75e8, mutex=0x7f1e580e75c0,
abstime=0x7f1ea1f21c90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7f1eda7fc700 (LWP 3691918)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1eda7fbc90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e580e8440) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1eda7fbc90, clockid=<optimized
out>, mutex=0x7f1e580e83f0, cond=0x7f1e580e8418) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e580e8418, mutex=0x7f1e580e83f0,
abstime=0x7f1eda7fbc90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f1edaffd700 (LWP 3691917)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1edaffcc90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e580e8014) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1edaffcc90, clockid=<optimized
out>, mutex=0x7f1e580e7fc0, cond=0x7f1e580e7fe8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e580e7fe8, mutex=0x7f1e580e7fc0,
abstime=0x7f1edaffcc90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f1e9f4fd700 (LWP 3691916)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e9f4fcc90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e5809e3a4) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e9f4fcc90, clockid=<optimized
out>, mutex=0x7f1e5809e350, cond=0x7f1e5809e378) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e5809e378, mutex=0x7f1e5809e350,
abstime=0x7f1e9f4fcc90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f1ea1721700 (LWP 3691915)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1ea1720c90, clockid=<optimized out>, expected=0,
futex_word=0x557df0790d20) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1ea1720c90, clockid=<optimized
out>, mutex=0x557df0790cd0, cond=0x557df0790cf8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x557df0790cf8, mutex=0x557df0790cd0,
abstime=0x7f1ea1720c90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f1e9df87700 (LWP 3691914)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e9df86c90, clockid=<optimized out>, expected=0,
futex_word=0x557df08b4bd4) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e9df86c90, clockid=<optimized
out>, mutex=0x557df08b4b80, cond=0x557df08b4ba8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x557df08b4ba8, mutex=0x557df08b4b80,
abstime=0x7f1e9df86c90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f1e8703e700 (LWP 3691913)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e8703dc90, clockid=<optimized out>, expected=0,
futex_word=0x7f1e580e7be0) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e8703dc90, clockid=<optimized
out>, mutex=0x7f1e580e7b90, cond=0x7f1e580e7bb8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f1e580e7bb8, mutex=0x7f1e580e7b90,
abstime=0x7f1e8703dc90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f1edb7fe700 (LWP 3690915)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1edb7fdc90, clockid=<optimized out>, expected=0,
futex_word=0x557df081ac34) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1edb7fdc90, clockid=<optimized
out>, mutex=0x557df081abe0, cond=0x557df081ac08) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x557df081ac08, mutex=0x557df081abe0,
abstime=0x7f1edb7fdc90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f1edbfff700 (LWP 3690914)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1edbffec90, clockid=<optimized out>, expected=0,
futex_word=0x557df07957b0) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1edbffec90, clockid=<optimized
out>, mutex=0x557df0795760, cond=0x557df0795788) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x557df0795788, mutex=0x557df0795760,
abstime=0x7f1edbffec90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f1ee0ceb700 (LWP 3690913)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1ee0ceac90, clockid=<optimized out>, expected=0,
futex_word=0x557df0792d70) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1ee0ceac90, clockid=<optimized
out>, mutex=0x557df0792d20, cond=0x557df0792d48) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x557df0792d48, mutex=0x557df0792d20,
abstime=0x7f1ee0ceac90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f1ea2723700 (LWP 3690912)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1ea2722c90, clockid=<optimized out>, expected=0,
futex_word=0x557df07868e4) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1ea2722c90, clockid=<optimized
out>, mutex=0x557df0786890, cond=0x557df07868b8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x557df07868b8, mutex=0x557df0786890,
abstime=0x7f1ea2722c90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f1ee1cec700 (LWP 3690535)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1ee1cebc90, clockid=<optimized out>, expected=0,
futex_word=0x557df07952f4) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1ee1cebc90, clockid=<optimized
out>, mutex=0x557df07952a0, cond=0x557df07952c8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x557df07952c8, mutex=0x557df07952a0,
abstime=0x7f1ee1cebc90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f1e8dce6700 (LWP 3690534)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f1e8dce5c90, clockid=<optimized out>, expected=0,
futex_word=0x557df0795c34) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1e8dce5c90, clockid=<optimized
out>, mutex=0x557df0795be0, cond=0x557df0795c08) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x557df0795c08, mutex=0x557df0795be0,
abstime=0x7f1e8dce5c90) at pthread_cond_wait.c:656
#3  0x00007f1f0f1a8558 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f1a5a61 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f1e8e4e7700 (LWP 3666501)):
#0  __GI___pthread_getspecific (key=4) at pthread_getspecific.c:31
#1  0x00007f1f0c44e044 in g_thread_self () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1f0c424493 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1f0f3e361b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f3878ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a12c2 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#8  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f1e8ece8700 (LWP 3666500)):
#0  0x00007f1f0edfaaff in __GI___poll (fds=0x7f1e78004280, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f1f0c42436e in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1f0c4244a3 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1f0f3e361b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f3878ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a12c2 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#8  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f1e8f7bf700 (LWP 3666495)):
#0  0x00007f1f0edfaaff in __GI___poll (fds=0x7f1e88005210, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f1f0c42436e in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1f0c4244a3 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1f0f3e361b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1f0f3878ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f1a12c2 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1efa9983fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f1e9d675700 (LWP 3666494)):
#0  __GI___libc_read (nbytes=16, buf=0x7f1e9d674af0, fd=43) at
../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=43, buf=0x7f1e9d674af0, nbytes=16) at
../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f1f0c46cb2f in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1f0c423ebe in g_main_context_check () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1f0c424312 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1f0c4244a3 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f1f0f3e361b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f1f0f3878ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f1f0f1a12c2 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f1efa6e3549 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#12 0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f1e9ce74700 (LWP 3666477)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f1f0f1a49e0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f1f0f1a4846 in QSemaphore::tryAcquire(int, int) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f1f1080e867 in KisTileDataSwapper::waitForWork() (this=<optimized
out>) at
/home/wolthera/krita/src/libs/image/tiles3/swap/kis_tile_data_swapper.cpp:74
#4  0x00007f1f1080ea6a in KisTileDataSwapper::run() (this=0x7f1f10d62d20
<(anonymous namespace)::Q_QGS_s_instance::innerFunction()::holder+64>) at
/home/wolthera/krita/src/libs/image/tiles3/swap/kis_tile_data_swapper.cpp:80
#5  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f1ea31e8700 (LWP 3666467)):
#0  0x00007f1f0c471508 in g_mutex_unlock () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1f0c4238e1 in g_main_context_prepare () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1f0c42429b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1f0c4244a3 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1f0f3e361b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f3878ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0f1a12c2 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f1ef9423700 (LWP 3666209)):
#0  0x00007f1f0c471508 in g_mutex_unlock () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1f0c423bae in g_main_context_query () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1f0c4242e8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1f0c4244a3 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1f0f3e361b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f0f3878ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1f0f1a12c2 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f1f0c1f3f4b in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f1f0f1a245c in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#10 0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f1ef9dc5700 (LWP 3666208)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f1ee4001978) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f1ee4001928,
cond=0x7f1ee4001950) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f1ee4001950, mutex=0x7f1ee4001928) at
pthread_cond_wait.c:638
#3  0x00007f1f02834e7b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f1f02834a7b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f1efcf36700 (LWP 3666207)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f1ee4001978) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f1ee4001928,
cond=0x7f1ee4001950) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f1ee4001950, mutex=0x7f1ee4001928) at
pthread_cond_wait.c:638
#3  0x00007f1f02834e7b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f1f02834a7b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f1efc735700 (LWP 3666206)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f1ee4001978) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f1ee4001928,
cond=0x7f1ee4001950) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f1ee4001950, mutex=0x7f1ee4001928) at
pthread_cond_wait.c:638
#3  0x00007f1f02834e7b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f1f02834a7b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f1efbf34700 (LWP 3666205)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f1ee4001978) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f1ee4001928,
cond=0x7f1ee4001950) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f1ee4001950, mutex=0x7f1ee4001928) at
pthread_cond_wait.c:638
#3  0x00007f1f02834e7b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f1f02834a7b in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f1f0cda1609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f1f0ee07293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f1f09a2ef80 (LWP 3666176)):
[KCrash Handler]
#4  0x00007f1f0f1dd37d in qHash(QString const&, unsigned int) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1f1086321c in QHash<QString, QHashDummyValue>::findNode(QString
const&, unsigned int*) const (ahp=<synthetic pointer>, akey=...,
this=0x7ffc08120b78) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qhash.h:940
#6  QHash<QString, QHashDummyValue>::insert(QString const&, QHashDummyValue
const&) (avalue=..., akey=..., this=0x7ffc08120b78) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhash.h:773
#7  QSet<QString>::insert(QString const&) (value=..., this=0x7ffc08120b78) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qset.h:222
#8  QSet<QString>::QSet<QList<QString>::iterator,
true>(QList<QString>::iterator, QList<QString>::iterator) (this=0x7ffc08120b78,
first=..., last=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qset.h:66
#9  0x00007f1f10862175 in KisLockedPropertiesProxy::getPropertiesKeys() const
(this=0x557e0505d860) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:245
#10 0x00007f1f10ae3e64 in
KisPropertiesConfiguration::getPrefixedProperties(QString const&,
KisPropertiesConfiguration*) const (this=0x557e0505d860, prefix=...,
config=0x557df97555e0) at
/home/wolthera/krita/src/libs/image/kis_properties_configuration.cc:347
#11 0x00007f1ee03136f6 in
KisMaskingBrushOptionProperties::read(KisPropertiesConfiguration const*,
double, QSharedPointer<KisResourcesInterface>,
QSharedPointer<KoCanvasResourcesInterface>) (this=this@entry=0x7ffc08120eb0,
setting=0x557e0505d860, masterBrushSize=25, resourcesInterface=...,
canvasResourcesInterface=...) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:835
#12 0x00007f1ee0311749 in
KisMaskingBrushOption::readOptionSetting(KisPinnedSharedPtr<KisPropertiesConfiguration>)
(this=0x557df9a4aaf0, setting=...) at
/usr/include/c++/9/bits/std_function.h:683
#13 0x00007f1f11319976 in
KisPaintOpOption::startReadOptionSetting(KisPinnedSharedPtr<KisPropertiesConfiguration>)
(this=this@entry=0x557df9a4aaf0, setting=...) at
/home/wolthera/krita/src/libs/ui/kis_paintop_option.cpp:68
#14 0x00007f1f1131e5a4 in
KisPaintOpSettingsWidget::setConfiguration(KisPinnedSharedPtr<KisPropertiesConfiguration>)
(this=0x557df8dec170, config=...) at /usr/include/c++/9/bits/atomic_base.h:318
#15 0x00007f1f10865039 in
KisPaintOpConfigWidget::setConfigurationSafe(KisPinnedSharedPtr<KisPropertiesConfiguration>)
(this=this@entry=0x557df8dec170, config=...) at
/usr/include/c++/9/bits/atomic_base.h:318
#16 0x00007f1f11306d0d in KisPaintopBox::slotUpdateOptionsWidgetPopup()
(this=0x557df0783270) at /usr/include/c++/9/bits/atomic_base.h:318
#17 0x00007f1f110e409c in KisPaintopBox::qt_static_metacall(QObject*,
QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>,
_id=<optimized out>, _a=<optimized out>) at
/home/wolthera/krita/build/libs/ui/kritaui_autogen/EWIEGA46WW/moc_kis_paintop_box.cpp:279
#18 0x00007f1f0f3bfe00 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f1f1044a00d in KisSignalCompressor::tryEmitSignalSafely()
(this=this@entry=0x557df0783418) at
/home/wolthera/krita/src/libs/global/kis_signal_compressor.cpp:195
#20 0x00007f1f1044a238 in KisSignalCompressor::start() (this=0x557df0783418) at
/home/wolthera/krita/src/libs/global/kis_signal_compressor.cpp:115
#21 0x00007f1f0f3bfe00 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f1f1044b9e1 in KisAcyclicSignalConnector::backwardSlotVoid()
(this=0x557dfe713b70) at
/home/wolthera/krita/src/libs/global/kis_acyclic_signal_connector.cpp:244
#23 0x00007f1f0f3bfe00 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f1f1085c891 in KisPaintOpPresetUpdateProxy::notifySettingsChanged()
(this=0x557dfde514c0) at
/home/wolthera/krita/src/libs/image/brushengine/KisPaintOpPresetUpdateProxy.cpp:42
#25 0x00007f1f1084d3cb in
KisPaintOpPreset::Private::UpdateListener::notifySettingsChanged()
(this=<optimized out>) at
/home/wolthera/krita/src/libs/image/brushengine/kis_paintop_preset.cpp:57
#26 0x00007f1f108550f2 in KisPaintOpSettings::onPropertyChanged()
(this=<optimized out>) at
/home/wolthera/krita/src/libs/image/brushengine/kis_paintop_settings.cpp:576
#27 0x00007f1f1085adc6 in KisPaintOpSettings::setProperty(QString const&,
QVariant const&) (this=this@entry=0x557df7773e50, name=..., value=...) at
/home/wolthera/krita/src/libs/image/brushengine/kis_paintop_settings.cpp:560
#28 0x00007f1f10860219 in KisLockedPropertiesProxy::getProperty(QString const&)
const (this=0x557e0506bbd0, name=...) at
/home/wolthera/krita/src/libs/global/kis_shared_ptr.h:167
#29 0x00007f1f10ae1db5 in KisPropertiesConfiguration::getDouble(QString const&,
double) const (this=this@entry=0x557e0506bbd0, name=..., def=def@entry=1) at
/home/wolthera/krita/src/libs/image/kis_properties_configuration.cc:194
#30 0x00007f1f10857a01 in KisPaintOpSettings::paintOpFlow() (this=<optimized
out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:835
#31 0x00007f1f11248944 in KisFlowResourceConverter::fromSource(QVariant const&)
(this=<optimized out>, value=...) at
/home/wolthera/krita/src/libs/global/kis_shared_ptr.h:167
#32 0x00007f1f0e2a11e1 in
KoDerivedResourceConverter::notifySourceChanged(QVariant const&)
(this=0x557df51ceb70, sourceValue=...) at
/home/wolthera/krita/src/libs/flake/KoDerivedResourceConverter.cpp:46
#33 0x00007f1f0e29cfed in KoResourceManager::notifyDerivedResourcesChanged(int,
QVariant const&) (this=0x557df45d15d0, key=6008, value=...) at
/home/wolthera/krita/src/libs/flake/KoResourceManager_p.cpp:82
#34 0x00007f1f0e29e98e in KoResourceManager::slotResourceInternalsChanged(int)
(this=0x557df45d15d0, key=6008) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhash.h:156
#35 0x00007f1f0f3bfe00 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f1f0e2952a2 in KoResourceUpdateMediator::sigResourceChanged(int)
(this=<optimized out>, _t1=<optimized out>) at
/home/wolthera/krita/build/libs/flake/kritaflake_autogen/EWIEGA46WW/moc_KoResourceUpdateMediator.cpp:133
#37 0x00007f1f0f3bfe00 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f1f0f3bfe00 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f1f1044a00d in KisSignalCompressor::tryEmitSignalSafely()
(this=this@entry=0x557df689bfb0) at
/home/wolthera/krita/src/libs/global/kis_signal_compressor.cpp:195
#40 0x00007f1f1044a0c5 in KisSignalCompressor::tryEmitOnTick(bool)
(this=this@entry=0x557df689bfb0, isFromTimer=isFromTimer@entry=true) at
/home/wolthera/krita/src/libs/global/kis_signal_compressor.cpp:172
#41 0x00007f1f1044a28e in KisSignalCompressor::slotTimerExpired()
(this=0x557df689bfb0) at
/home/wolthera/krita/src/libs/global/kis_signal_compressor.cpp:207
#42 0x00007f1f0f3bfe00 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x00007f1f0f3c490e in QTimer::timeout(QTimer::QPrivateSignal) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#44 0x00007f1f0f3b6865 in QObject::event(QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007f1f0fe62dc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007f1f0fe6bbb8 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#47 0x00007f1f11629d80 in KisApplication::notify(QObject*, QEvent*)
(this=0x7ffc08122700, receiver=<optimized out>, event=0x7ffc08122260) at
/home/wolthera/krita/src/libs/ui/KisApplication.cpp:767
#48 0x00007f1f0f388daa in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007f1f0f3e2950 in QTimerInfoList::activateTimers() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#50 0x00007f1f0f3e3284 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#51 0x00007f1f0c42417d in g_main_context_dispatch () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#52 0x00007f1f0c424400 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#53 0x00007f1f0c4244a3 in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#54 0x00007f1f0f3e3602 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#55 0x00007f1f0f3878ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#56 0x00007f1f0f38fa64 in QCoreApplication::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#57 0x0000557dedf84320 in main(int, char**) (argc=<optimized out>,
argv=<optimized out>) at /home/wolthera/krita/src/krita/main.cc:694
[Inferior 1 (process 3666176) detached]

Possible duplicates by query: bug 440193, bug 434601, bug 434257, bug 420333,
bug 419020.

Reported using DrKonqi

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