diff --git a/net/socket.c b/net/socket.c
index 8657112a687a..84223419da86 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2764,7 +2764,7 @@ static int do_recvmmsg(int fd, struct mmsghdr __user *mmsg,
 		 * error to return on the next call or if the
 		 * app asks about it using getsockopt(SO_ERROR).
 		 */
-		sock->sk->sk_err = -err;
+		WRITE_ONCE(sock->sk->sk_err, -err);
 	}
 out_put:
 	fput_light(sock->file, fput_needed);