static void sock_recv_mark(struct msghdr *msg, struct sock *sk,
struct sk_buff *skb)
{
- if (sock_flag(sk, SOCK_RCVMARK) && skb)
- put_cmsg(msg, SOL_SOCKET, SO_MARK, sizeof(__u32),
- &skb->mark);
+ if (sock_flag(sk, SOCK_RCVMARK) && skb) {
+ /* We must use a bounce buffer for CONFIG_HARDENED_USERCOPY=y */
+ __u32 mark = skb->mark;
+
+ put_cmsg(msg, SOL_SOCKET, SO_MARK, sizeof(__u32), &mark);
+ }
}
void __sock_recv_cmsgs(struct msghdr *msg, struct sock *sk,