From: tannerlove <tannerlove@google.com>
Date: Tue, 9 Jun 2020 17:21:32 -0400
Subject: selftests/net: in rxtimestamp getopt_long needs terminating null
 entry
Git-commit: 865a6cbb2288f8af7f9dc3b153c61b7014fdcf1e
Patch-mainline: 5.8-rc1
References: networking-stable-20_06_16

getopt_long requires the last element to be filled with zeros.
Otherwise, passing an unrecognized option can cause a segfault.

Fixes: 16e781224198 ("selftests/net: Add a test to validate behavior of rx timestamps")
Signed-off-by: Tanner Love <tannerlove@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 tools/testing/selftests/networking/timestamping/rxtimestamp.c |    1 +
 1 file changed, 1 insertion(+)

--- a/tools/testing/selftests/networking/timestamping/rxtimestamp.c
+++ b/tools/testing/selftests/networking/timestamping/rxtimestamp.c
@@ -115,6 +115,7 @@ static struct option long_options[] = {
 	{ "tcp", no_argument, 0, 't' },
 	{ "udp", no_argument, 0, 'u' },
 	{ "ip", no_argument, 0, 'i' },
+	{ NULL, 0, NULL, 0 },
 };
 
 static int next_port = 19999;