Description of problem:
when use sgpio do the led status test, some disk will report this error:
[dong@localhost sgpio]$ ./sgpio -d sdc -s locate
*** buffer overflow detected ***: ./sgpio terminated

Through testing, it is the sgpio code bug.

Version-Release number of selected component (if applicable):
Tested 8.6 and 8.8, they all have issue

How reproducible:
connect 10 SATA disk to server and than perform the sgpio cmd.

Steps to Reproduce:
1.connect 10 disks on server
2.find the port num > 10 disk(>10 is necessary condition to trigger this err), such as follow sdc
[dong@localhost ~]$ lsscsi 
[0:2:0:0]    disk    Lenovo   RAID 730-8i 1GB  4.68  /dev/sda 
[15:0:0:0]   disk    ATA      ThinkSystem M.2  00-0  /dev/sdc 
[17:0:0:0]   process Marvell  Console          1.01  -        
[18:2:0:0]   disk    Lenovo   RAID 730-8i 1GB  4.68  /dev/sdb 
[19:0:0:0]   cd/dvd  XCC      Virtual Media    0399  /dev/sr0 
3.perform sgpio cmd: sgpio -d sdc -s locate

Actual results:
sgpio -d sdc -s locate will report overflow err

Expected results:
sgpio -d sdc -s locate will show the right led flashing

Additional info:
we have traced the root cause, in sgpio soure code in function led_set:
        if(sprintf(disks[index].name,"Port %d", port_num) < 0){
		printf("Error: Unable to write port number to buffor!\n");
		return -1;
	}
name is char name[7], and once the disk num exceed 9, it will cause out of bound issue, please set the array as the 11 to avoid this issue.