In /logs/firmware/unblob_extracted/firmware_extract/56048-12514271.gzip_extract/gzip.uncompressed_extract/5243916-15068666.gzip_extract/gzip.uncompressed_extract/etc/init.d/S30dbus line 58:

        if [ -f /var/lock/subsys/$servicename ]; then

                                 ^----------^ SC2154 (warning): servicename is referenced but not assigned.

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

Did you mean: 

        if [ -f /var/lock/subsys/"$servicename" ]; then

In /logs/firmware/unblob_extracted/firmware_extract/56048-12514271.gzip_extract/gzip.uncompressed_extract/5243916-15068666.gzip_extract/gzip.uncompressed_extract/etc/init.d/S30dbus line 65:

        RETVAL=$?

               ^-- SC2320 (warning): This $? refers to echo/printf, not a previous command. Assign to variable to avoid it being overwritten.

For more information:

  https://www.shellcheck.net/wiki/SC2154 -- servicename is referenced but not...

  https://www.shellcheck.net/wiki/SC2320 -- This $? refers to echo/printf, no...

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