diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index ae158a3f4abffbcfdff93ca574871875a2424b39..a9f0e646e92e512e7447732c399c9f41cd61cba7 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -693,7 +693,7 @@ void tcp_rcv_space_adjust(struct sock *sk)
 	 * <prev RTT . ><current RTT .. ><next RTT .... >
 	 */
 
-	if (sock_net(sk)->ipv4.sysctl_tcp_moderate_rcvbuf &&
+	if (READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_moderate_rcvbuf) &&
 	    !(sk->sk_userlocks & SOCK_RCVBUF_LOCK)) {
 		int rcvmem, rcvbuf;
 		u64 rcvwin, grow;
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 8123c79e279130fae0d6e595e64c5fb3e5059b0e..d0e91aa7b30e5d6498f85972b6b301d2c5608338 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -1421,7 +1421,7 @@ static void mptcp_rcv_space_adjust(struct mptcp_sock *msk, int copied)
 	if (msk->rcvq_space.copied <= msk->rcvq_space.space)
 		goto new_measure;
 
-	if (sock_net(sk)->ipv4.sysctl_tcp_moderate_rcvbuf &&
+	if (READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_moderate_rcvbuf) &&
 	    !(sk->sk_userlocks & SOCK_RCVBUF_LOCK)) {
 		int rcvmem, rcvbuf;
 		u64 rcvwin, grow;