netdev - [PATCH net-next] ieee802154: fix error return code in ieee802154_llsec

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Date:   Wed, 19 May 2021 14:16:14 +0000
From:   Wei Yongjun <weiyongjun1@...wei.com>
To:     <weiyongjun1@...wei.com>, Alexander Aring <alex.aring@...il.com>,
        "Stefan Schmidt" <stefan@...enfreihafen.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
CC:     <linux-wpan@...r.kernel.org>, <netdev@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>, Hulk Robot <hulkci@...wei.com>
Subject: [PATCH net-next] ieee802154: fix error return code in ieee802154_llsec_getparams()

Fix to return negative error code -ENOBUFS from the error handling
case instead of 0, as done elsewhere in this function.

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
 net/ieee802154/nl-mac.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/ieee802154/nl-mac.c b/net/ieee802154/nl-mac.c
index 0c1b0770c59e..c23c152860b7 100644
--- a/net/ieee802154/nl-mac.c
+++ b/net/ieee802154/nl-mac.c
@@ -680,8 +680,10 @@ int ieee802154_llsec_getparams(struct sk_buff *skb, struct genl_info *info)
 	    nla_put_u8(msg, IEEE802154_ATTR_LLSEC_SECLEVEL, params.out_level) ||
 	    nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER,
 			be32_to_cpu(params.frame_counter)) ||
-	    ieee802154_llsec_fill_key_id(msg, &params.out_key))
+	    ieee802154_llsec_fill_key_id(msg, &params.out_key)) {
+		rc = -ENOBUFS;
 		goto out_free;
+	}
 
 	dev_put(dev);