compat_msghdr 1885 net/socket.c struct compat_msghdr __user *msg_compat = compat_msghdr 1886 net/socket.c (struct compat_msghdr __user *)msg; compat_msghdr 1992 net/socket.c struct compat_msghdr __user *msg_compat = compat_msghdr 1993 net/socket.c (struct compat_msghdr __user *)msg;