[PATCH 6.1 151/166] net: tipc: resize nlattr array to correct size

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From: Lin Ma <linma@xxxxxxxxxx>

[ Upstream commit 44194cb1b6045dea33ae9a0d54fb7e7cd93a2e09 ]

According to nla_parse_nested_deprecated(), the tb[] is supposed to the
destination array with maxtype+1 elements. In current
tipc_nl_media_get() and __tipc_nl_media_set(), a larger array is used
which is unnecessary. This patch resize them to a proper size.

Fixes: 1e55417d8fc6 ("tipc: add media set to new netlink api")
Fixes: 46f15c6794fb ("tipc: add media get/dump to new netlink api")
Signed-off-by: Lin Ma <linma@xxxxxxxxxx>
Reviewed-by: Florian Westphal <fw@xxxxxxxxx>
Reviewed-by: Tung Nguyen <tung.q.nguyen@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230614120604.1196377-1-linma@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 net/tipc/bearer.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 53881406e2006..cdcd2731860ba 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -1258,7 +1258,7 @@ int tipc_nl_media_get(struct sk_buff *skb, struct genl_info *info)
 	struct tipc_nl_msg msg;
 	struct tipc_media *media;
 	struct sk_buff *rep;
-	struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+	struct nlattr *attrs[TIPC_NLA_MEDIA_MAX + 1];
 
 	if (!info->attrs[TIPC_NLA_MEDIA])
 		return -EINVAL;
@@ -1307,7 +1307,7 @@ int __tipc_nl_media_set(struct sk_buff *skb, struct genl_info *info)
 	int err;
 	char *name;
 	struct tipc_media *m;
-	struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+	struct nlattr *attrs[TIPC_NLA_MEDIA_MAX + 1];
 
 	if (!info->attrs[TIPC_NLA_MEDIA])
 		return -EINVAL;
-- 
2.39.2






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