From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Fri, 13 Jul 2018 18:05:37 +0300
Subject: samples/bpf: test_cgrp2_sock2: fix an off by one
Patch-mainline: v4.19-rc1
Git-commit: ee583014a9d8cc48cb4969f87cc02c12b966fabc
References: bsc#1109837

"prog_cnt" is the number of elements which are filled out in prog_fd[]
so the test should be >= instead of >.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 samples/bpf/test_cgrp2_sock2.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/samples/bpf/test_cgrp2_sock2.c
+++ b/samples/bpf/test_cgrp2_sock2.c
@@ -50,7 +50,7 @@ int main(int argc, char **argv)
 	if (argc > 3)
 		filter_id = atoi(argv[3]);
 
-	if (filter_id > prog_cnt) {
+	if (filter_id >= prog_cnt) {
 		printf("Invalid program id; program not found in file\n");
 		return EXIT_FAILURE;
 	}