netdev - [PATCH net 2/4] selftests/tcp_ao: Zero-init tcp_ao_info

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Date: Sat, 13 Apr 2024 02:42:53 +0100
From: Dmitry Safonov via B4 Relay <devnull+0x7f454c46.gmail.com@...nel.org>
To: "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, Shuah Khan <shuah@...nel.org>
Cc: netdev@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Dmitry Safonov <0x7f454c46@...il.com>
Subject: [PATCH net 2/4] selftests/tcp_ao: Zero-init tcp_ao_info_opt

From: Dmitry Safonov <0x7f454c46@...il.com>

The structure is on the stack and has to be zero-initialized as
the kernel checks for:
>	if (in.reserved != 0 || in.reserved2 != 0)
>		return -EINVAL;

Fixes: b26660531cf6 ("selftests/net: Add test for TCP-AO add setsockopt() command")
Signed-off-by: Dmitry Safonov <0x7f454c46@...il.com>
---
 tools/testing/selftests/net/tcp_ao/setsockopt-closed.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/tcp_ao/setsockopt-closed.c b/tools/testing/selftests/net/tcp_ao/setsockopt-closed.c
index 452de131fa3a..517930f9721b 100644
--- a/tools/testing/selftests/net/tcp_ao/setsockopt-closed.c
+++ b/tools/testing/selftests/net/tcp_ao/setsockopt-closed.c
@@ -21,7 +21,7 @@ static void make_listen(int sk)
 static void test_vefify_ao_info(int sk, struct tcp_ao_info_opt *info,
 				const char *tst)
 {
-	struct tcp_ao_info_opt tmp;
+	struct tcp_ao_info_opt tmp = {};
 	socklen_t len = sizeof(tmp);

 	if (getsockopt(sk, IPPROTO_TCP, TCP_AO_INFO, &tmp, &len))

-- 
2.42.0