samples/bpf: test_cgrp2_sock2: fix an off by one

"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>

diff --git a/samples/bpf/test_cgrp2_sock2.c b/samples/bpf/test_cgrp2_sock2.c
index 3b5be23..a9277b1 100644 (file)
--- a/samples/bpf/test_cgrp2_sock2.c
+++ b/samples/bpf/test_cgrp2_sock2.c
@@ -51,7 +51,7 @@ 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;
        }