__sys_sendmsg_sock
extern long __sys_sendmsg_sock(struct socket *sock, struct msghdr *msg,
ret = __sys_sendmsg_sock(sock, &kmsg->msg, flags);
ret = __sys_sendmsg_sock(sock, &kmsg->msg, flags);
extern long __sys_sendmsg_sock(struct socket *sock, struct msghdr *msg,