In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/etc/fsupgrade.d/update_old_permissions.sh line 3:

. /lib/rcscripts/sh/error.sh

  ^------------------------^ SC1091 (info): Not following: /lib/rcscripts/sh/error.sh was not specified as input (see shellcheck -x).

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/etc/fsupgrade.d/update_old_permissions.sh line 5:

pattern=/etc/actionengine/user/1/rules/*.xml

        ^-- SC2125 (warning): Brace expansions and globs are literal in assignments. Quote it or use an array.

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/etc/fsupgrade.d/update_old_permissions.sh line 6:

files=$(echo $pattern)

      ^--------------^ SC2116 (style): Useless echo? Instead of 'cmd $(echo foo)', just use 'cmd foo'.

             ^------^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

files=$(echo "$pattern")

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/etc/fsupgrade.d/update_old_permissions.sh line 7:

[ "$pattern" = "$files" ] || chmod +r $files ||

                                      ^----^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

[ "$pattern" = "$files" ] || chmod +r "$files" ||

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/etc/fsupgrade.d/update_old_permissions.sh line 8:

	error $0: Failed to change permissions.

              ^-- SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

	error "$0": Failed to change permissions.

For more information:

  https://www.shellcheck.net/wiki/SC2125 -- Brace expansions and globs are li...

  https://www.shellcheck.net/wiki/SC1091 -- Not following: /lib/rcscripts/sh/...

  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...