ieee802154: fix error return code in ieee802154_llsec_getparams()

BugLink: https://bugs.launchpad.net/bugs/1933691
[ Upstream commit 373e864cf52403b0974c2f23ca8faf9104234555 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kelsey Skunberg <kelsey.skunberg@canonical.com>

diff --git a/net/ieee802154/nl-mac.c b/net/ieee802154/nl-mac.c
index 0c1b0770c59ea303e4334156f1d203b1d2f16fc3..c23c152860b73c9531e0453d115cedb205c0be2d 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);