cifsd: set error return value for memcmp() difference

Set error return value for memcmp() difference.

Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

diff --git a/fs/cifsd/auth.c b/fs/cifsd/auth.c
index ed32052fbf930279a7ab9d17d4e1006bdc773a2f..adfb3b33f2e55f65eb29a20cbe49bd9b7d486990 100644 (file)
--- a/fs/cifsd/auth.c
+++ b/fs/cifsd/auth.c
@@ -430,7 +430,8 @@ int ksmbd_auth_ntlmv2(struct ksmbd_session *sess, struct ntlmv2_resp *ntlmv2,
                goto out;
        }
 
-       rc = memcmp(ntlmv2->ntlmv2_hash, ntlmv2_rsp, CIFS_HMAC_MD5_HASH_SIZE);
+       if (memcmp(ntlmv2->ntlmv2_hash, ntlmv2_rsp, CIFS_HMAC_MD5_HASH_SIZE) != 0)
+               rc = -EINVAL;
 out:
        ksmbd_release_crypto_ctx(ctx);
        kfree(construct);
@@ -469,7 +470,8 @@ static int __ksmbd_auth_ntlmv2(struct ksmbd_session *sess, char *client_nonce,
                goto out;
        }
 
-       rc = memcmp(ntlm_resp, key, CIFS_AUTH_RESP_SIZE);
+       if (memcmp(ntlm_resp, key, CIFS_AUTH_RESP_SIZE) != 0)
+               rc = -EINVAL;
 out:
        return rc;
 }