https://bugs.kde.org/show_bug.cgi?id=420612
            Bug ID: 420612
           Summary: Krita: Segmentation fault when closing
           Product: krita
           Version: 4.2.9
          Platform: Ubuntu Packages
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: General
          Assignee: krita-bugs-n...@kde.org
          Reporter: kd3.mat...@reborn.com
  Target Milestone: ---

Application: krita (4.2.9)

Qt Version: 5.12.8
Frameworks Version: 5.68.0
Operating System: Linux 5.4.0-26-generic x86_64
Windowing system: X11
Distribution: Ubuntu 20.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
nothing: just installed the application, then opened (just to see if the
installation was ok), then closed normally.
- Unusual behavior I noticed:
nothing
- Custom settings of the application:
none

The crash can be reproduced every time.

-- Backtrace:
Application: Krita (krita), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7be2b2f800 (LWP 6440))]

Thread 7 (Thread 0x7f7bbc92f700 (LWP 6465)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f7be7a220b0 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f7be7a21f16 in QSemaphore::tryAcquire(int, int) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f7be8ee59aa in KisTileDataSwapper::run() () from
/lib/x86_64-linux-gnu/libkritaimage.so.18
#4  0x00007f7be7a1f9d2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7be59f6609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f7be7695103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f7bcf7fe700 (LWP 6462)):
#0  __GI___libc_read (nbytes=16, buf=0x7f7bcf7fdb60, fd=12) at
../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=12, buf=0x7f7bcf7fdb60, nbytes=16) at
../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f7be522f89f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7be51e6cfe in g_main_context_check () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7be51e7152 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7be51e72e3 in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f7be7c3f583 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7be7be64db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7be7a1e785 in QThread::exec() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f7be5a29efa in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007f7be7a1f9d2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f7be59f6609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#12 0x00007f7be7695103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f7bcffff700 (LWP 6461)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f7bc0003788) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f7bc0003738,
cond=0x7f7bc0003760) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f7bc0003760, mutex=0x7f7bc0003738) at
pthread_cond_wait.c:638
#3  0x00007f7bdadff3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f7bdadfefeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f7be59f6609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f7be7695103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f7bd6733700 (LWP 6460)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f7bc0003788) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f7bc0003738,
cond=0x7f7bc0003760) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f7bc0003760, mutex=0x7f7bc0003738) at
pthread_cond_wait.c:638
#3  0x00007f7bdadff3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f7bdadfefeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f7be59f6609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f7be7695103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f7bcdf32700 (LWP 6459)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f7bc0003788) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f7bc0003738,
cond=0x7f7bc0003760) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f7bc0003760, mutex=0x7f7bc0003738) at
pthread_cond_wait.c:638
#3  0x00007f7bdadff3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f7bdadfefeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f7be59f6609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f7be7695103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f7bd5f32700 (LWP 6458)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f7bc0003788) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f7bc0003738,
cond=0x7f7bc0003760) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f7bc0003760, mutex=0x7f7bc0003738) at
pthread_cond_wait.c:638
#3  0x00007f7bdadff3db in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f7bdadfefeb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f7be59f6609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f7be7695103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f7be2b2f800 (LWP 6440)):
[KCrash Handler]
#6  0x00007f7be8659435 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#7  0x00007f7be8659474 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007f7be8659474 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f7be8659509 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f7be864e3dc in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f7be863d908 in QWidget::~QWidget() () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f7be863de1d in QWidget::~QWidget() () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f7be7c1101e in QObjectPrivate::deleteChildren() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f7be863dc29 in QWidget::~QWidget() () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f7be8711931 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f7be7c1101e in QObjectPrivate::deleteChildren() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f7be863dc29 in QWidget::~QWidget() () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f7be8713df8 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f7be7c1101e in QObjectPrivate::deleteChildren() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f7be863dc29 in QWidget::~QWidget() () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f7baacab25d in ?? () from
/usr/lib/python3/dist-packages/PyQt5/QtWidgets.cpython-38-x86_64-linux-gnu.so
#22 0x00007f7bab5233f5 in ?? () from
/usr/lib/python3/dist-packages/PyQt5/QtCore.cpython-38-x86_64-linux-gnu.so
#23 0x00007f7bab73fb60 in ?? () from
/usr/lib/python3/dist-packages/sip.cpython-38-x86_64-linux-gnu.so
#24 0x00007f7bab5230a0 in ?? () from
/usr/lib/python3/dist-packages/PyQt5/QtCore.cpython-38-x86_64-linux-gnu.so
#25 0x00007f7babbd8d16 in ?? () from /lib/x86_64-linux-gnu/libpython3.8.so.1.0
#26 0x00007f7babc213cc in PyVectorcall_Call () from
/lib/x86_64-linux-gnu/libpython3.8.so.1.0
#27 0x00007f7baba89cf7 in ?? () from /lib/x86_64-linux-gnu/libpython3.8.so.1.0
#28 0x00007f7babb0e635 in Py_FinalizeEx () from
/lib/x86_64-linux-gnu/libpython3.8.so.1.0
#29 0x00007f7babefeaf9 in ?? () from
/usr/lib/x86_64-linux-gnu/kritaplugins/kritapykrita.so
#30 0x00007f7babefec90 in ?? () from
/usr/lib/x86_64-linux-gnu/kritaplugins/kritapykrita.so
#31 0x00007f7babefbd1b in ?? () from
/usr/lib/x86_64-linux-gnu/kritaplugins/kritapykrita.so
#32 0x00007f7be7c1101e in QObjectPrivate::deleteChildren() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f7be7c1b5ef in QObject::~QObject() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f7be7be9aae in QCoreApplication::~QCoreApplication() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f7be860049e in QApplication::~QApplication() () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007f7bea1bd74f in QtSingleApplication::~QtSingleApplication() () from
/lib/x86_64-linux-gnu/libkritaui.so.18
#37 0x00005632323a3bdc in main ()
[Inferior 1 (process 6440) detached]

Possible duplicates by query: bug 418530, bug 417465, bug 414728, bug 413345,
bug 408889.

Reported using DrKonqi

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