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.

Fixes: 3e9c156e2c21 ("ieee802154: add netlink interfaces for llsec")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20210519141614.3040055-1-weiyongjun1@huawei.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>

diff --git a/net/ieee802154/nl-mac.c b/net/ieee802154/nl-mac.c
index a6a8cf62924ce1827ccadd87362908432b9620b4..29bf97640166451a616231fcf90c4b88644d50ed 100644 (file)
--- 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);