Comment 2 for bug 1793433

Processing triggers for linux-image-4.15.0-33-generic (4.15.0-33.36) ...
/etc/kernel/postinst.d/initramfs-tools:
update-initramfs: Generating /boot/initrd.img-4.15.0-33-generic
cp: failed to restore the default file creation context: Invalid argument
E: /usr/share/initramfs-tools/hooks/kmod failed with return 1.
update-initramfs: failed for /boot/initrd.img-4.15.0-33-generic with 1.
run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1
dpkg: error processing package linux-image-4.15.0-33-generic (--configure):
 installed linux-image-4.15.0-33-generic package post-installation script subprocess returned error exit status 1