I've been having this crash, starting with development appimages downloaded in the past week. I first just had that Krita would force close whenever I tried to interact with it. With GDB, I didn't get much of a useful backtrace either.

I'm going to keep testing to see whether it appears again. Maybe some local system updates need to be done...

GDB "backtrace":


Thread 1 "krita" received signal SIGBUS, Bus error.
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/krita: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritaui.so.20: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libKF5Crash.so.5: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritaimage.so.20: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritamultiarch.so.20: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritaresources.so.20: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritaglobal.so.20: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libKF5I18n.so.5: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libQt5Widgets.so.5: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libQt5Gui.so.5: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libQt5Core.so.5: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libQt5Network.so.5: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libpng16.so.16: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritaimpex.so.20: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritacolor.so.20: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritalibbrush.so.20: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libmlt++-7.so.7: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritawidgets.so.20: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libKF5Completion.so.5: No such file or directory
BFD: reopening /tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritaresourcewidgets.so.20: No such file or directory

 [snip, more of the same for each so]

warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/krita'
warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritaui.so.20'
warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/../lib/libKF5Crash.so.5'
warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritaimage.so.20'
warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritamultiarch.so.20'
warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritaresources.so.20'
warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritaglobal.so.20'
warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/../lib/libKF5I18n.so.5'
warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/../lib/libQt5Widgets.so.5'
warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/../lib/libQt5Gui.so.5'
warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/../lib/libQt5Core.so.5'
warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/../lib/libQt5Network.so.5'
warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/../lib/libpng16.so.16'
warning: Can't read data for section '.eh_frame' in file '/tmp/.mount_krita-eEgGoC/usr/bin/../lib/libkritaimpex.so.20'

 [snip, more of the same for each so]

0x00007fffefe0edf0 in ?? () from /tmp/.mount_krita-eEgGoC/usr/plugins/platforms/../../lib/libQt5XcbQpa.so.5
(gdb) bt
#0  0x00007fffefe0edf0 in ?? () from /tmp/.mount_krita-eEgGoC/usr/plugins/platforms/../../lib/libQt5XcbQpa.so.5
#1  0x00007fffefe07cfe in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () from /tmp/.mount_krita-eEgGoC/usr/plugins/platforms/../../lib/libQt5XcbQpa.so.5
#2  0x000000000000003e in ?? ()
#3  0x0000000000000000 in ?? ()
(gdb)