In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/sa/sa1 line 17:

[ -r ${SYSCONFIG_DIR}/sysstat ] && . ${SYSCONFIG_DIR}/sysstat

                                     ^----------------------^ SC1091 (info): Not following: ./sysstat was not specified as input (see shellcheck -x).

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/sa/sa1 line 29:

cd ${ENDIR}

^---------^ SC2164 (warning): Use 'cd ... || exit' or 'cd ... || return' in case cd fails.

Did you mean: 

cd ${ENDIR} || exit

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/sa/sa1 line 36:

	exec ${ENDIR}/sadc -F -L ${SADC_OPTIONS} 1 1 ${SA_DIR}

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

Did you mean: 

	exec ${ENDIR}/sadc -F -L "${SADC_OPTIONS}" 1 1 ${SA_DIR}

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/libexec/sa/sa1 line 38:

	exec ${ENDIR}/sadc -F -L ${SADC_OPTIONS} $* ${SA_DIR}

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

                                                 ^-- SC2048 (warning): Use "$@" (with quotes) to prevent whitespace problems.

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

Did you mean: 

	exec ${ENDIR}/sadc -F -L "${SADC_OPTIONS}" "$*" ${SA_DIR}

For more information:

  https://www.shellcheck.net/wiki/SC2048 -- Use "$@" (with quotes) to prevent...

  https://www.shellcheck.net/wiki/SC2164 -- Use 'cd ... || exit' or 'cd ... |...

  https://www.shellcheck.net/wiki/SC1091 -- Not following: ./sysstat was not ...