inet: read sk->sk_family once in inet_recv_error()

[platform/kernel/linux-starfive.git] / net / ipv4 / af_inet.c

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 1c58bd7..e59962f 100644 (file)
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1628,10 +1628,12 @@ EXPORT_SYMBOL(inet_current_timestamp);
 
 int inet_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
 {
-       if (sk->sk_family == AF_INET)
+       unsigned int family = READ_ONCE(sk->sk_family);
+
+       if (family == AF_INET)
                return ip_recv_error(sk, msg, len, addr_len);
 #if IS_ENABLED(CONFIG_IPV6)
-       if (sk->sk_family == AF_INET6)
+       if (family == AF_INET6)
                return pingv6_ops.ipv6_recv_error(sk, msg, len, addr_len);
 #endif
        return -EINVAL;