Merge: wireguard: stable backport for 10.1 phase 2

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/1041

JIRA: https://issues.redhat.com/browse/RHEL-96621

 * 71e5da4 wireguard: global: add __nonstring annotations for unterminated strings
 * c852902 wireguard: netlink: use NLA_POLICY_MASK where possible

Signed-off-by: CKI Backport Bot <cki-ci-bot+cki-gitlab-backport-bot@redhat.com>

---

<small>Created 2025-06-13 03:34 UTC by backporter - [KWF FAQ](https://red.ht/kernel_workflow_doc) - [Slack #team-kernel-workflow](https://redhat-internal.slack.com/archives/C04LRUPMJQ5) - [Source](https://gitlab.com/cki-project/kernel-workflow/-/blob/main/webhook/utils/backporter.py) - [Documentation](https://gitlab.com/cki-project/kernel-workflow/-/blob/main/docs/README.backporter.md) - [Report an issue](https://issues.redhat.com/secure/CreateIssueDetails!init.jspa?pid=12334433&issuetype=1&priority=4&summary=backporter+webhook+issue&components=kernel-workflow+/+backporter)</small>

Approved-by: Antoine Tenart <atenart@redhat.com>

Merged-by: Julio Faracco <jfaracco@redhat.com>

Author: jcfaracco

drivers/net/wireguard/cookie.c

@@ -26,8 +26,8 @@ void wg_cookie_checker_init(struct cookie_checker *checker,
 }
 
 enum { COOKIE_KEY_LABEL_LEN = 8 };
-static const u8 mac1_key_label[COOKIE_KEY_LABEL_LEN] = "mac1----";
-static const u8 cookie_key_label[COOKIE_KEY_LABEL_LEN] = "cookie--";
+static const u8 mac1_key_label[COOKIE_KEY_LABEL_LEN] __nonstring = "mac1----";
+static const u8 cookie_key_label[COOKIE_KEY_LABEL_LEN] __nonstring = "cookie--";
 
 static void precompute_key(u8 key[NOISE_SYMMETRIC_KEY_LEN],
 			   const u8 pubkey[NOISE_PUBLIC_KEY_LEN],

drivers/net/wireguard/netlink.c

@@ -24,7 +24,7 @@ static const struct nla_policy device_policy[WGDEVICE_A_MAX + 1] = {
 	[WGDEVICE_A_IFNAME]		= { .type = NLA_NUL_STRING, .len = IFNAMSIZ - 1 },
 	[WGDEVICE_A_PRIVATE_KEY]	= NLA_POLICY_EXACT_LEN(NOISE_PUBLIC_KEY_LEN),
 	[WGDEVICE_A_PUBLIC_KEY]		= NLA_POLICY_EXACT_LEN(NOISE_PUBLIC_KEY_LEN),
-	[WGDEVICE_A_FLAGS]		= { .type = NLA_U32 },
+	[WGDEVICE_A_FLAGS]		= NLA_POLICY_MASK(NLA_U32, __WGDEVICE_F_ALL),
 	[WGDEVICE_A_LISTEN_PORT]	= { .type = NLA_U16 },
 	[WGDEVICE_A_FWMARK]		= { .type = NLA_U32 },
 	[WGDEVICE_A_PEERS]		= { .type = NLA_NESTED }
@@ -33,7 +33,7 @@ static const struct nla_policy device_policy[WGDEVICE_A_MAX + 1] = {
 static const struct nla_policy peer_policy[WGPEER_A_MAX + 1] = {
 	[WGPEER_A_PUBLIC_KEY]				= NLA_POLICY_EXACT_LEN(NOISE_PUBLIC_KEY_LEN),
 	[WGPEER_A_PRESHARED_KEY]			= NLA_POLICY_EXACT_LEN(NOISE_SYMMETRIC_KEY_LEN),
-	[WGPEER_A_FLAGS]				= { .type = NLA_U32 },
+	[WGPEER_A_FLAGS]				= NLA_POLICY_MASK(NLA_U32, __WGPEER_F_ALL),
 	[WGPEER_A_ENDPOINT]				= NLA_POLICY_MIN_LEN(sizeof(struct sockaddr)),
 	[WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL]	= { .type = NLA_U16 },
 	[WGPEER_A_LAST_HANDSHAKE_TIME]			= NLA_POLICY_EXACT_LEN(sizeof(struct __kernel_timespec)),
@@ -373,9 +373,6 @@ static int set_peer(struct wg_device *wg, struct nlattr **attrs)
 
 	if (attrs[WGPEER_A_FLAGS])
 		flags = nla_get_u32(attrs[WGPEER_A_FLAGS]);
-	ret = -EOPNOTSUPP;
-	if (flags & ~__WGPEER_F_ALL)
-		goto out;
 
 	ret = -EPFNOSUPPORT;
 	if (attrs[WGPEER_A_PROTOCOL_VERSION]) {
@@ -506,9 +503,6 @@ static int wg_set_device(struct sk_buff *skb, struct genl_info *info)
 
 	if (info->attrs[WGDEVICE_A_FLAGS])
 		flags = nla_get_u32(info->attrs[WGDEVICE_A_FLAGS]);
-	ret = -EOPNOTSUPP;
-	if (flags & ~__WGDEVICE_F_ALL)
-		goto out;
 
 	if (info->attrs[WGDEVICE_A_LISTEN_PORT] || info->attrs[WGDEVICE_A_FWMARK]) {
 		struct net *net;

drivers/net/wireguard/noise.c

@@ -25,8 +25,8 @@
  * <- e, ee, se, psk, {}
  */
 
-static const u8 handshake_name[37] = "Noise_IKpsk2_25519_ChaChaPoly_BLAKE2s";
-static const u8 identifier_name[34] = "WireGuard v1 zx2c4 Jason@zx2c4.com";
+static const u8 handshake_name[37] __nonstring = "Noise_IKpsk2_25519_ChaChaPoly_BLAKE2s";
+static const u8 identifier_name[34] __nonstring = "WireGuard v1 zx2c4 Jason@zx2c4.com";
 static u8 handshake_init_hash[NOISE_HASH_LEN] __ro_after_init;
 static u8 handshake_init_chaining_key[NOISE_HASH_LEN] __ro_after_init;
 static atomic64_t keypair_counter = ATOMIC64_INIT(0);