[PATCH] userfaultfd: selftest: fix compiler warning

[Alakesh Haloi]

Fixes following compiler warning

userfaultfd.c: In function ‘usage’:
userfaultfd.c:126:2: warning: format not a string literal and no format
        arguments [-Wformat-security]
  fprintf(stderr, examples);

Signed-off-by: Alakesh Haloi <alakesh.ha...@gmail.com>
---
 tools/testing/selftests/vm/userfaultfd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/vm/userfaultfd.c 
b/tools/testing/selftests/vm/userfaultfd.c
index 5d1db824f73a..b3e6497b080c 100644
--- a/tools/testing/selftests/vm/userfaultfd.c
+++ b/tools/testing/selftests/vm/userfaultfd.c
@@ -123,7 +123,7 @@ static void usage(void)
        fprintf(stderr, "Supported <test type>: anon, hugetlb, "
                "hugetlb_shared, shmem\n\n");
        fprintf(stderr, "Examples:\n\n");
-       fprintf(stderr, examples);
+       fprintf(stderr, "%s", examples);
        exit(1);
 }
 
-- 
2.17.1