Bluetooth: selftest - check for errors when computing ZZ

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/net/bluetooth/selftest.c b/net/bluetooth/selftest.c
index 126bdc5..ce99648 100644 (file)
--- a/net/bluetooth/selftest.c
+++ b/net/bluetooth/selftest.c
@@ -143,7 +143,7 @@ static int __init test_ecdh_sample(struct crypto_kpp *tfm, const u8 priv_a[32],
                                   const u8 pub_b[64], const u8 dhkey[32])
 {
        u8 *tmp, *dhkey_a, *dhkey_b;
-       int ret = 0;
+       int ret;
 
        tmp = kmalloc(64, GFP_KERNEL);
        if (!tmp)
@@ -152,8 +152,13 @@ static int __init test_ecdh_sample(struct crypto_kpp *tfm, const u8 priv_a[32],
        dhkey_a = &tmp[0];
        dhkey_b = &tmp[32];
 
-       compute_ecdh_secret(tfm, pub_b, priv_a, dhkey_a);
-       compute_ecdh_secret(tfm, pub_a, priv_b, dhkey_b);
+       ret = compute_ecdh_secret(tfm, pub_b, priv_a, dhkey_a);
+       if (ret)
+               goto out;
+
+       ret = compute_ecdh_secret(tfm, pub_a, priv_b, dhkey_b);
+       if (ret)
+               goto out;
 
        if (memcmp(dhkey_a, dhkey, 32)) {
                ret = -EINVAL;