// https://syzkaller.appspot.com/bug?id=e41b0d7fd6abbf7d4124d1aed56e0bd16425424c
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <arpa/inet.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <netinet/in.h>
#include <sched.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/wait.h>
#include <unistd.h>

#include <linux/capability.h>
#include <linux/genetlink.h>
#include <linux/if_addr.h>
#include <linux/if_ether.h>
#include <linux/if_link.h>
#include <linux/if_tun.h>
#include <linux/in6.h>
#include <linux/ip.h>
#include <linux/neighbour.h>
#include <linux/net.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/tcp.h>
#include <linux/veth.h>

static unsigned long long procid;

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

struct nlmsg {
  char* pos;
  int nesting;
  struct nlattr* nested[8];
  char buf[4096];
};

static void netlink_init(struct nlmsg* nlmsg, int typ, int flags,
                         const void* data, int size)
{
  memset(nlmsg, 0, sizeof(*nlmsg));
  struct nlmsghdr* hdr = (struct nlmsghdr*)nlmsg->buf;
  hdr->nlmsg_type = typ;
  hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | flags;
  memcpy(hdr + 1, data, size);
  nlmsg->pos = (char*)(hdr + 1) + NLMSG_ALIGN(size);
}

static void netlink_attr(struct nlmsg* nlmsg, int typ, const void* data,
                         int size)
{
  struct nlattr* attr = (struct nlattr*)nlmsg->pos;
  attr->nla_len = sizeof(*attr) + size;
  attr->nla_type = typ;
  if (size > 0)
    memcpy(attr + 1, data, size);
  nlmsg->pos += NLMSG_ALIGN(attr->nla_len);
}

static void netlink_nest(struct nlmsg* nlmsg, int typ)
{
  struct nlattr* attr = (struct nlattr*)nlmsg->pos;
  attr->nla_type = typ;
  nlmsg->pos += sizeof(*attr);
  nlmsg->nested[nlmsg->nesting++] = attr;
}

static void netlink_done(struct nlmsg* nlmsg)
{
  struct nlattr* attr = nlmsg->nested[--nlmsg->nesting];
  attr->nla_len = nlmsg->pos - (char*)attr;
}

static int netlink_send_ext(struct nlmsg* nlmsg, int sock, uint16_t reply_type,
                            int* reply_len, bool dofail)
{
  if (nlmsg->pos > nlmsg->buf + sizeof(nlmsg->buf) || nlmsg->nesting)
    exit(1);
  struct nlmsghdr* hdr = (struct nlmsghdr*)nlmsg->buf;
  hdr->nlmsg_len = nlmsg->pos - nlmsg->buf;
  struct sockaddr_nl addr;
  memset(&addr, 0, sizeof(addr));
  addr.nl_family = AF_NETLINK;
  ssize_t n = sendto(sock, nlmsg->buf, hdr->nlmsg_len, 0,
                     (struct sockaddr*)&addr, sizeof(addr));
  if (n != (ssize_t)hdr->nlmsg_len) {
    if (dofail)
      exit(1);
    return -1;
  }
  n = recv(sock, nlmsg->buf, sizeof(nlmsg->buf), 0);
  if (reply_len)
    *reply_len = 0;
  if (n < 0) {
    if (dofail)
      exit(1);
    return -1;
  }
  if (n < (ssize_t)sizeof(struct nlmsghdr)) {
    errno = EINVAL;
    if (dofail)
      exit(1);
    return -1;
  }
  if (hdr->nlmsg_type == NLMSG_DONE)
    return 0;
  if (reply_len && hdr->nlmsg_type == reply_type) {
    *reply_len = n;
    return 0;
  }
  if (n < (ssize_t)(sizeof(struct nlmsghdr) + sizeof(struct nlmsgerr))) {
    errno = EINVAL;
    if (dofail)
      exit(1);
    return -1;
  }
  if (hdr->nlmsg_type != NLMSG_ERROR) {
    errno = EINVAL;
    if (dofail)
      exit(1);
    return -1;
  }
  errno = -((struct nlmsgerr*)(hdr + 1))->error;
  return -errno;
}

static int netlink_send(struct nlmsg* nlmsg, int sock)
{
  return netlink_send_ext(nlmsg, sock, 0, NULL, true);
}

static int netlink_query_family_id(struct nlmsg* nlmsg, int sock,
                                   const char* family_name, bool dofail)
{
  struct genlmsghdr genlhdr;
  memset(&genlhdr, 0, sizeof(genlhdr));
  genlhdr.cmd = CTRL_CMD_GETFAMILY;
  netlink_init(nlmsg, GENL_ID_CTRL, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(nlmsg, CTRL_ATTR_FAMILY_NAME, family_name,
               strnlen(family_name, GENL_NAMSIZ - 1) + 1);
  int n = 0;
  int err = netlink_send_ext(nlmsg, sock, GENL_ID_CTRL, &n, dofail);
  if (err < 0) {
    return -1;
  }
  uint16_t id = 0;
  struct nlattr* attr = (struct nlattr*)(nlmsg->buf + NLMSG_HDRLEN +
                                         NLMSG_ALIGN(sizeof(genlhdr)));
  for (; (char*)attr < nlmsg->buf + n;
       attr = (struct nlattr*)((char*)attr + NLMSG_ALIGN(attr->nla_len))) {
    if (attr->nla_type == CTRL_ATTR_FAMILY_ID) {
      id = *(uint16_t*)(attr + 1);
      break;
    }
  }
  if (!id) {
    errno = EINVAL;
    return -1;
  }
  recv(sock, nlmsg->buf, sizeof(nlmsg->buf), 0);
  return id;
}

static int netlink_next_msg(struct nlmsg* nlmsg, unsigned int offset,
                            unsigned int total_len)
{
  struct nlmsghdr* hdr = (struct nlmsghdr*)(nlmsg->buf + offset);
  if (offset == total_len || offset + hdr->nlmsg_len > total_len)
    return -1;
  return hdr->nlmsg_len;
}

static unsigned int queue_count = 2;

static void netlink_add_device_impl(struct nlmsg* nlmsg, const char* type,
                                    const char* name, bool up)
{
  struct ifinfomsg hdr;
  memset(&hdr, 0, sizeof(hdr));
  if (up)
    hdr.ifi_flags = hdr.ifi_change = IFF_UP;
  netlink_init(nlmsg, RTM_NEWLINK, NLM_F_EXCL | NLM_F_CREATE, &hdr,
               sizeof(hdr));
  if (name)
    netlink_attr(nlmsg, IFLA_IFNAME, name, strlen(name));
  netlink_attr(nlmsg, IFLA_NUM_TX_QUEUES, &queue_count, sizeof(queue_count));
  netlink_attr(nlmsg, IFLA_NUM_RX_QUEUES, &queue_count, sizeof(queue_count));
  netlink_nest(nlmsg, IFLA_LINKINFO);
  netlink_attr(nlmsg, IFLA_INFO_KIND, type, strlen(type));
}

static void netlink_add_device(struct nlmsg* nlmsg, int sock, const char* type,
                               const char* name)
{
  netlink_add_device_impl(nlmsg, type, name, false);
  netlink_done(nlmsg);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_veth(struct nlmsg* nlmsg, int sock, const char* name,
                             const char* peer)
{
  netlink_add_device_impl(nlmsg, "veth", name, false);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  netlink_nest(nlmsg, VETH_INFO_PEER);
  nlmsg->pos += sizeof(struct ifinfomsg);
  netlink_attr(nlmsg, IFLA_IFNAME, peer, strlen(peer));
  netlink_attr(nlmsg, IFLA_NUM_TX_QUEUES, &queue_count, sizeof(queue_count));
  netlink_attr(nlmsg, IFLA_NUM_RX_QUEUES, &queue_count, sizeof(queue_count));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_xfrm(struct nlmsg* nlmsg, int sock, const char* name)
{
  netlink_add_device_impl(nlmsg, "xfrm", name, true);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  int if_id = 1;
  netlink_attr(nlmsg, 2, &if_id, sizeof(if_id));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_hsr(struct nlmsg* nlmsg, int sock, const char* name,
                            const char* slave1, const char* slave2)
{
  netlink_add_device_impl(nlmsg, "hsr", name, false);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  int ifindex1 = if_nametoindex(slave1);
  netlink_attr(nlmsg, IFLA_HSR_SLAVE1, &ifindex1, sizeof(ifindex1));
  int ifindex2 = if_nametoindex(slave2);
  netlink_attr(nlmsg, IFLA_HSR_SLAVE2, &ifindex2, sizeof(ifindex2));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_linked(struct nlmsg* nlmsg, int sock, const char* type,
                               const char* name, const char* link)
{
  netlink_add_device_impl(nlmsg, type, name, false);
  netlink_done(nlmsg);
  int ifindex = if_nametoindex(link);
  netlink_attr(nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex));
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_vlan(struct nlmsg* nlmsg, int sock, const char* name,
                             const char* link, uint16_t id, uint16_t proto)
{
  netlink_add_device_impl(nlmsg, "vlan", name, false);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  netlink_attr(nlmsg, IFLA_VLAN_ID, &id, sizeof(id));
  netlink_attr(nlmsg, IFLA_VLAN_PROTOCOL, &proto, sizeof(proto));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int ifindex = if_nametoindex(link);
  netlink_attr(nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex));
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_macvlan(struct nlmsg* nlmsg, int sock, const char* name,
                                const char* link)
{
  netlink_add_device_impl(nlmsg, "macvlan", name, false);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  uint32_t mode = MACVLAN_MODE_BRIDGE;
  netlink_attr(nlmsg, IFLA_MACVLAN_MODE, &mode, sizeof(mode));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int ifindex = if_nametoindex(link);
  netlink_attr(nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex));
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_geneve(struct nlmsg* nlmsg, int sock, const char* name,
                               uint32_t vni, struct in_addr* addr4,
                               struct in6_addr* addr6)
{
  netlink_add_device_impl(nlmsg, "geneve", name, false);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  netlink_attr(nlmsg, IFLA_GENEVE_ID, &vni, sizeof(vni));
  if (addr4)
    netlink_attr(nlmsg, IFLA_GENEVE_REMOTE, addr4, sizeof(*addr4));
  if (addr6)
    netlink_attr(nlmsg, IFLA_GENEVE_REMOTE6, addr6, sizeof(*addr6));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

#define IFLA_IPVLAN_FLAGS 2
#define IPVLAN_MODE_L3S 2
#undef IPVLAN_F_VEPA
#define IPVLAN_F_VEPA 2

static void netlink_add_ipvlan(struct nlmsg* nlmsg, int sock, const char* name,
                               const char* link, uint16_t mode, uint16_t flags)
{
  netlink_add_device_impl(nlmsg, "ipvlan", name, false);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  netlink_attr(nlmsg, IFLA_IPVLAN_MODE, &mode, sizeof(mode));
  netlink_attr(nlmsg, IFLA_IPVLAN_FLAGS, &flags, sizeof(flags));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int ifindex = if_nametoindex(link);
  netlink_attr(nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex));
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_device_change(struct nlmsg* nlmsg, int sock,
                                  const char* name, bool up, const char* master,
                                  const void* mac, int macsize,
                                  const char* new_name)
{
  struct ifinfomsg hdr;
  memset(&hdr, 0, sizeof(hdr));
  if (up)
    hdr.ifi_flags = hdr.ifi_change = IFF_UP;
  hdr.ifi_index = if_nametoindex(name);
  netlink_init(nlmsg, RTM_NEWLINK, 0, &hdr, sizeof(hdr));
  if (new_name)
    netlink_attr(nlmsg, IFLA_IFNAME, new_name, strlen(new_name));
  if (master) {
    int ifindex = if_nametoindex(master);
    netlink_attr(nlmsg, IFLA_MASTER, &ifindex, sizeof(ifindex));
  }
  if (macsize)
    netlink_attr(nlmsg, IFLA_ADDRESS, mac, macsize);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static int netlink_add_addr(struct nlmsg* nlmsg, int sock, const char* dev,
                            const void* addr, int addrsize)
{
  struct ifaddrmsg hdr;
  memset(&hdr, 0, sizeof(hdr));
  hdr.ifa_family = addrsize == 4 ? AF_INET : AF_INET6;
  hdr.ifa_prefixlen = addrsize == 4 ? 24 : 120;
  hdr.ifa_scope = RT_SCOPE_UNIVERSE;
  hdr.ifa_index = if_nametoindex(dev);
  netlink_init(nlmsg, RTM_NEWADDR, NLM_F_CREATE | NLM_F_REPLACE, &hdr,
               sizeof(hdr));
  netlink_attr(nlmsg, IFA_LOCAL, addr, addrsize);
  netlink_attr(nlmsg, IFA_ADDRESS, addr, addrsize);
  return netlink_send(nlmsg, sock);
}

static void netlink_add_addr4(struct nlmsg* nlmsg, int sock, const char* dev,
                              const char* addr)
{
  struct in_addr in_addr;
  inet_pton(AF_INET, addr, &in_addr);
  int err = netlink_add_addr(nlmsg, sock, dev, &in_addr, sizeof(in_addr));
  if (err < 0) {
  }
}

static void netlink_add_addr6(struct nlmsg* nlmsg, int sock, const char* dev,
                              const char* addr)
{
  struct in6_addr in6_addr;
  inet_pton(AF_INET6, addr, &in6_addr);
  int err = netlink_add_addr(nlmsg, sock, dev, &in6_addr, sizeof(in6_addr));
  if (err < 0) {
  }
}

static struct nlmsg nlmsg;

#define DEVLINK_FAMILY_NAME "devlink"

#define DEVLINK_CMD_PORT_GET 5
#define DEVLINK_ATTR_BUS_NAME 1
#define DEVLINK_ATTR_DEV_NAME 2
#define DEVLINK_ATTR_NETDEV_NAME 7

static struct nlmsg nlmsg2;

static void initialize_devlink_ports(const char* bus_name, const char* dev_name,
                                     const char* netdev_prefix)
{
  struct genlmsghdr genlhdr;
  int len, total_len, id, err, offset;
  uint16_t netdev_index;
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
  if (sock == -1)
    exit(1);
  int rtsock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (rtsock == -1)
    exit(1);
  id = netlink_query_family_id(&nlmsg, sock, DEVLINK_FAMILY_NAME, true);
  if (id == -1)
    goto error;
  memset(&genlhdr, 0, sizeof(genlhdr));
  genlhdr.cmd = DEVLINK_CMD_PORT_GET;
  netlink_init(&nlmsg, id, NLM_F_DUMP, &genlhdr, sizeof(genlhdr));
  netlink_attr(&nlmsg, DEVLINK_ATTR_BUS_NAME, bus_name, strlen(bus_name) + 1);
  netlink_attr(&nlmsg, DEVLINK_ATTR_DEV_NAME, dev_name, strlen(dev_name) + 1);
  err = netlink_send_ext(&nlmsg, sock, id, &total_len, true);
  if (err < 0) {
    goto error;
  }
  offset = 0;
  netdev_index = 0;
  while ((len = netlink_next_msg(&nlmsg, offset, total_len)) != -1) {
    struct nlattr* attr = (struct nlattr*)(nlmsg.buf + offset + NLMSG_HDRLEN +
                                           NLMSG_ALIGN(sizeof(genlhdr)));
    for (; (char*)attr < nlmsg.buf + offset + len;
         attr = (struct nlattr*)((char*)attr + NLMSG_ALIGN(attr->nla_len))) {
      if (attr->nla_type == DEVLINK_ATTR_NETDEV_NAME) {
        char* port_name;
        char netdev_name[IFNAMSIZ];
        port_name = (char*)(attr + 1);
        snprintf(netdev_name, sizeof(netdev_name), "%s%d", netdev_prefix,
                 netdev_index);
        netlink_device_change(&nlmsg2, rtsock, port_name, true, 0, 0, 0,
                              netdev_name);
        break;
      }
    }
    offset += len;
    netdev_index++;
  }
error:
  close(rtsock);
  close(sock);
}

#define DEV_IPV4 "172.20.20.%d"
#define DEV_IPV6 "fe80::%02x"
#define DEV_MAC 0x00aaaaaaaaaa

static void netdevsim_add(unsigned int addr, unsigned int port_count)
{
  write_file("/sys/bus/netdevsim/del_device", "%u", addr);
  if (write_file("/sys/bus/netdevsim/new_device", "%u %u", addr, port_count)) {
    char buf[32];
    snprintf(buf, sizeof(buf), "netdevsim%d", addr);
    initialize_devlink_ports("netdevsim", buf, "netdevsim");
  }
}

#define WG_GENL_NAME "wireguard"
enum wg_cmd {
  WG_CMD_GET_DEVICE,
  WG_CMD_SET_DEVICE,
};
enum wgdevice_attribute {
  WGDEVICE_A_UNSPEC,
  WGDEVICE_A_IFINDEX,
  WGDEVICE_A_IFNAME,
  WGDEVICE_A_PRIVATE_KEY,
  WGDEVICE_A_PUBLIC_KEY,
  WGDEVICE_A_FLAGS,
  WGDEVICE_A_LISTEN_PORT,
  WGDEVICE_A_FWMARK,
  WGDEVICE_A_PEERS,
};
enum wgpeer_attribute {
  WGPEER_A_UNSPEC,
  WGPEER_A_PUBLIC_KEY,
  WGPEER_A_PRESHARED_KEY,
  WGPEER_A_FLAGS,
  WGPEER_A_ENDPOINT,
  WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
  WGPEER_A_LAST_HANDSHAKE_TIME,
  WGPEER_A_RX_BYTES,
  WGPEER_A_TX_BYTES,
  WGPEER_A_ALLOWEDIPS,
  WGPEER_A_PROTOCOL_VERSION,
};
enum wgallowedip_attribute {
  WGALLOWEDIP_A_UNSPEC,
  WGALLOWEDIP_A_FAMILY,
  WGALLOWEDIP_A_IPADDR,
  WGALLOWEDIP_A_CIDR_MASK,
};

static void netlink_wireguard_setup(void)
{
  const char ifname_a[] = "wg0";
  const char ifname_b[] = "wg1";
  const char ifname_c[] = "wg2";
  const char private_a[] =
      "\xa0\x5c\xa8\x4f\x6c\x9c\x8e\x38\x53\xe2\xfd\x7a\x70\xae\x0f\xb2\x0f\xa1"
      "\x52\x60\x0c\xb0\x08\x45\x17\x4f\x08\x07\x6f\x8d\x78\x43";
  const char private_b[] =
      "\xb0\x80\x73\xe8\xd4\x4e\x91\xe3\xda\x92\x2c\x22\x43\x82\x44\xbb\x88\x5c"
      "\x69\xe2\x69\xc8\xe9\xd8\x35\xb1\x14\x29\x3a\x4d\xdc\x6e";
  const char private_c[] =
      "\xa0\xcb\x87\x9a\x47\xf5\xbc\x64\x4c\x0e\x69\x3f\xa6\xd0\x31\xc7\x4a\x15"
      "\x53\xb6\xe9\x01\xb9\xff\x2f\x51\x8c\x78\x04\x2f\xb5\x42";
  const char public_a[] =
      "\x97\x5c\x9d\x81\xc9\x83\xc8\x20\x9e\xe7\x81\x25\x4b\x89\x9f\x8e\xd9\x25"
      "\xae\x9f\x09\x23\xc2\x3c\x62\xf5\x3c\x57\xcd\xbf\x69\x1c";
  const char public_b[] =
      "\xd1\x73\x28\x99\xf6\x11\xcd\x89\x94\x03\x4d\x7f\x41\x3d\xc9\x57\x63\x0e"
      "\x54\x93\xc2\x85\xac\xa4\x00\x65\xcb\x63\x11\xbe\x69\x6b";
  const char public_c[] =
      "\xf4\x4d\xa3\x67\xa8\x8e\xe6\x56\x4f\x02\x02\x11\x45\x67\x27\x08\x2f\x5c"
      "\xeb\xee\x8b\x1b\xf5\xeb\x73\x37\x34\x1b\x45\x9b\x39\x22";
  const uint16_t listen_a = 20001;
  const uint16_t listen_b = 20002;
  const uint16_t listen_c = 20003;
  const uint16_t af_inet = AF_INET;
  const uint16_t af_inet6 = AF_INET6;
  const struct sockaddr_in endpoint_b_v4 = {
      .sin_family = AF_INET,
      .sin_port = htons(listen_b),
      .sin_addr = {htonl(INADDR_LOOPBACK)}};
  const struct sockaddr_in endpoint_c_v4 = {
      .sin_family = AF_INET,
      .sin_port = htons(listen_c),
      .sin_addr = {htonl(INADDR_LOOPBACK)}};
  struct sockaddr_in6 endpoint_a_v6 = {.sin6_family = AF_INET6,
                                       .sin6_port = htons(listen_a)};
  endpoint_a_v6.sin6_addr = in6addr_loopback;
  struct sockaddr_in6 endpoint_c_v6 = {.sin6_family = AF_INET6,
                                       .sin6_port = htons(listen_c)};
  endpoint_c_v6.sin6_addr = in6addr_loopback;
  const struct in_addr first_half_v4 = {0};
  const struct in_addr second_half_v4 = {(uint32_t)htonl(128 << 24)};
  const struct in6_addr first_half_v6 = {{{0}}};
  const struct in6_addr second_half_v6 = {{{0x80}}};
  const uint8_t half_cidr = 1;
  const uint16_t persistent_keepalives[] = {1, 3, 7, 9, 14, 19};
  struct genlmsghdr genlhdr = {.cmd = WG_CMD_SET_DEVICE, .version = 1};
  int sock;
  int id, err;
  sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
  if (sock == -1) {
    return;
  }
  id = netlink_query_family_id(&nlmsg, sock, WG_GENL_NAME, true);
  if (id == -1)
    goto error;
  netlink_init(&nlmsg, id, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(&nlmsg, WGDEVICE_A_IFNAME, ifname_a, strlen(ifname_a) + 1);
  netlink_attr(&nlmsg, WGDEVICE_A_PRIVATE_KEY, private_a, 32);
  netlink_attr(&nlmsg, WGDEVICE_A_LISTEN_PORT, &listen_a, 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGDEVICE_A_PEERS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_b, 32);
  netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_b_v4,
               sizeof(endpoint_b_v4));
  netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
               &persistent_keepalives[0], 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v4,
               sizeof(first_half_v4));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v6,
               sizeof(first_half_v6));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_c, 32);
  netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_c_v6,
               sizeof(endpoint_c_v6));
  netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
               &persistent_keepalives[1], 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v4,
               sizeof(second_half_v4));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v6,
               sizeof(second_half_v6));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  err = netlink_send(&nlmsg, sock);
  if (err < 0) {
  }
  netlink_init(&nlmsg, id, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(&nlmsg, WGDEVICE_A_IFNAME, ifname_b, strlen(ifname_b) + 1);
  netlink_attr(&nlmsg, WGDEVICE_A_PRIVATE_KEY, private_b, 32);
  netlink_attr(&nlmsg, WGDEVICE_A_LISTEN_PORT, &listen_b, 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGDEVICE_A_PEERS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_a, 32);
  netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_a_v6,
               sizeof(endpoint_a_v6));
  netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
               &persistent_keepalives[2], 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v4,
               sizeof(first_half_v4));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v6,
               sizeof(first_half_v6));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_c, 32);
  netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_c_v4,
               sizeof(endpoint_c_v4));
  netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
               &persistent_keepalives[3], 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v4,
               sizeof(second_half_v4));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v6,
               sizeof(second_half_v6));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  err = netlink_send(&nlmsg, sock);
  if (err < 0) {
  }
  netlink_init(&nlmsg, id, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(&nlmsg, WGDEVICE_A_IFNAME, ifname_c, strlen(ifname_c) + 1);
  netlink_attr(&nlmsg, WGDEVICE_A_PRIVATE_KEY, private_c, 32);
  netlink_attr(&nlmsg, WGDEVICE_A_LISTEN_PORT, &listen_c, 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGDEVICE_A_PEERS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_a, 32);
  netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_a_v6,
               sizeof(endpoint_a_v6));
  netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
               &persistent_keepalives[4], 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v4,
               sizeof(first_half_v4));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v6,
               sizeof(first_half_v6));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_b, 32);
  netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_b_v4,
               sizeof(endpoint_b_v4));
  netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
               &persistent_keepalives[5], 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v4,
               sizeof(second_half_v4));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v6,
               sizeof(second_half_v6));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  err = netlink_send(&nlmsg, sock);
  if (err < 0) {
  }

error:
  close(sock);
}

static void initialize_netdevices(void)
{
  char netdevsim[16];
  sprintf(netdevsim, "netdevsim%d", (int)procid);
  struct {
    const char* type;
    const char* dev;
  } devtypes[] = {
      {"ip6gretap", "ip6gretap0"}, {"bridge", "bridge0"}, {"vcan", "vcan0"},
      {"bond", "bond0"},           {"team", "team0"},     {"dummy", "dummy0"},
      {"nlmon", "nlmon0"},         {"caif", "caif0"},     {"batadv", "batadv0"},
      {"vxcan", "vxcan1"},         {"veth", 0},           {"wireguard", "wg0"},
      {"wireguard", "wg1"},        {"wireguard", "wg2"},
  };
  const char* devmasters[] = {"bridge", "bond", "team", "batadv"};
  struct {
    const char* name;
    int macsize;
    bool noipv6;
  } devices[] = {
      {"lo", ETH_ALEN},
      {"sit0", 0},
      {"bridge0", ETH_ALEN},
      {"vcan0", 0, true},
      {"tunl0", 0},
      {"gre0", 0},
      {"gretap0", ETH_ALEN},
      {"ip_vti0", 0},
      {"ip6_vti0", 0},
      {"ip6tnl0", 0},
      {"ip6gre0", 0},
      {"ip6gretap0", ETH_ALEN},
      {"erspan0", ETH_ALEN},
      {"bond0", ETH_ALEN},
      {"veth0", ETH_ALEN},
      {"veth1", ETH_ALEN},
      {"team0", ETH_ALEN},
      {"veth0_to_bridge", ETH_ALEN},
      {"veth1_to_bridge", ETH_ALEN},
      {"veth0_to_bond", ETH_ALEN},
      {"veth1_to_bond", ETH_ALEN},
      {"veth0_to_team", ETH_ALEN},
      {"veth1_to_team", ETH_ALEN},
      {"veth0_to_hsr", ETH_ALEN},
      {"veth1_to_hsr", ETH_ALEN},
      {"hsr0", 0},
      {"dummy0", ETH_ALEN},
      {"nlmon0", 0},
      {"vxcan0", 0, true},
      {"vxcan1", 0, true},
      {"caif0", ETH_ALEN},
      {"batadv0", ETH_ALEN},
      {netdevsim, ETH_ALEN},
      {"xfrm0", ETH_ALEN},
      {"veth0_virt_wifi", ETH_ALEN},
      {"veth1_virt_wifi", ETH_ALEN},
      {"virt_wifi0", ETH_ALEN},
      {"veth0_vlan", ETH_ALEN},
      {"veth1_vlan", ETH_ALEN},
      {"vlan0", ETH_ALEN},
      {"vlan1", ETH_ALEN},
      {"macvlan0", ETH_ALEN},
      {"macvlan1", ETH_ALEN},
      {"ipvlan0", ETH_ALEN},
      {"ipvlan1", ETH_ALEN},
      {"veth0_macvtap", ETH_ALEN},
      {"veth1_macvtap", ETH_ALEN},
      {"macvtap0", ETH_ALEN},
      {"macsec0", ETH_ALEN},
      {"veth0_to_batadv", ETH_ALEN},
      {"veth1_to_batadv", ETH_ALEN},
      {"batadv_slave_0", ETH_ALEN},
      {"batadv_slave_1", ETH_ALEN},
      {"geneve0", ETH_ALEN},
      {"geneve1", ETH_ALEN},
      {"wg0", 0},
      {"wg1", 0},
      {"wg2", 0},
  };
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock == -1)
    exit(1);
  unsigned i;
  for (i = 0; i < sizeof(devtypes) / sizeof(devtypes[0]); i++)
    netlink_add_device(&nlmsg, sock, devtypes[i].type, devtypes[i].dev);
  for (i = 0; i < sizeof(devmasters) / (sizeof(devmasters[0])); i++) {
    char master[32], slave0[32], veth0[32], slave1[32], veth1[32];
    sprintf(slave0, "%s_slave_0", devmasters[i]);
    sprintf(veth0, "veth0_to_%s", devmasters[i]);
    netlink_add_veth(&nlmsg, sock, slave0, veth0);
    sprintf(slave1, "%s_slave_1", devmasters[i]);
    sprintf(veth1, "veth1_to_%s", devmasters[i]);
    netlink_add_veth(&nlmsg, sock, slave1, veth1);
    sprintf(master, "%s0", devmasters[i]);
    netlink_device_change(&nlmsg, sock, slave0, false, master, 0, 0, NULL);
    netlink_device_change(&nlmsg, sock, slave1, false, master, 0, 0, NULL);
  }
  netlink_add_xfrm(&nlmsg, sock, "xfrm0");
  netlink_device_change(&nlmsg, sock, "bridge_slave_0", true, 0, 0, 0, NULL);
  netlink_device_change(&nlmsg, sock, "bridge_slave_1", true, 0, 0, 0, NULL);
  netlink_add_veth(&nlmsg, sock, "hsr_slave_0", "veth0_to_hsr");
  netlink_add_veth(&nlmsg, sock, "hsr_slave_1", "veth1_to_hsr");
  netlink_add_hsr(&nlmsg, sock, "hsr0", "hsr_slave_0", "hsr_slave_1");
  netlink_device_change(&nlmsg, sock, "hsr_slave_0", true, 0, 0, 0, NULL);
  netlink_device_change(&nlmsg, sock, "hsr_slave_1", true, 0, 0, 0, NULL);
  netlink_add_veth(&nlmsg, sock, "veth0_virt_wifi", "veth1_virt_wifi");
  netlink_add_linked(&nlmsg, sock, "virt_wifi", "virt_wifi0",
                     "veth1_virt_wifi");
  netlink_add_veth(&nlmsg, sock, "veth0_vlan", "veth1_vlan");
  netlink_add_vlan(&nlmsg, sock, "vlan0", "veth0_vlan", 0, htons(ETH_P_8021Q));
  netlink_add_vlan(&nlmsg, sock, "vlan1", "veth0_vlan", 1, htons(ETH_P_8021AD));
  netlink_add_macvlan(&nlmsg, sock, "macvlan0", "veth1_vlan");
  netlink_add_macvlan(&nlmsg, sock, "macvlan1", "veth1_vlan");
  netlink_add_ipvlan(&nlmsg, sock, "ipvlan0", "veth0_vlan", IPVLAN_MODE_L2, 0);
  netlink_add_ipvlan(&nlmsg, sock, "ipvlan1", "veth0_vlan", IPVLAN_MODE_L3S,
                     IPVLAN_F_VEPA);
  netlink_add_veth(&nlmsg, sock, "veth0_macvtap", "veth1_macvtap");
  netlink_add_linked(&nlmsg, sock, "macvtap", "macvtap0", "veth0_macvtap");
  netlink_add_linked(&nlmsg, sock, "macsec", "macsec0", "veth1_macvtap");
  char addr[32];
  sprintf(addr, DEV_IPV4, 14 + 10);
  struct in_addr geneve_addr4;
  if (inet_pton(AF_INET, addr, &geneve_addr4) <= 0)
    exit(1);
  struct in6_addr geneve_addr6;
  if (inet_pton(AF_INET6, "fc00::01", &geneve_addr6) <= 0)
    exit(1);
  netlink_add_geneve(&nlmsg, sock, "geneve0", 0, &geneve_addr4, 0);
  netlink_add_geneve(&nlmsg, sock, "geneve1", 1, 0, &geneve_addr6);
  netdevsim_add((int)procid, 4);
  netlink_wireguard_setup();
  for (i = 0; i < sizeof(devices) / (sizeof(devices[0])); i++) {
    char addr[32];
    sprintf(addr, DEV_IPV4, i + 10);
    netlink_add_addr4(&nlmsg, sock, devices[i].name, addr);
    if (!devices[i].noipv6) {
      sprintf(addr, DEV_IPV6, i + 10);
      netlink_add_addr6(&nlmsg, sock, devices[i].name, addr);
    }
    uint64_t macaddr = DEV_MAC + ((i + 10ull) << 40);
    netlink_device_change(&nlmsg, sock, devices[i].name, true, 0, &macaddr,
                          devices[i].macsize, NULL);
  }
  close(sock);
}
static void initialize_netdevices_init(void)
{
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock == -1)
    exit(1);
  struct {
    const char* type;
    int macsize;
    bool noipv6;
    bool noup;
  } devtypes[] = {
      {"nr", 7, true},
      {"rose", 5, true, true},
  };
  unsigned i;
  for (i = 0; i < sizeof(devtypes) / sizeof(devtypes[0]); i++) {
    char dev[32], addr[32];
    sprintf(dev, "%s%d", devtypes[i].type, (int)procid);
    sprintf(addr, "172.30.%d.%d", i, (int)procid + 1);
    netlink_add_addr4(&nlmsg, sock, dev, addr);
    if (!devtypes[i].noipv6) {
      sprintf(addr, "fe88::%02x:%02x", i, (int)procid + 1);
      netlink_add_addr6(&nlmsg, sock, dev, addr);
    }
    int macsize = devtypes[i].macsize;
    uint64_t macaddr = 0xbbbbbb +
                       ((unsigned long long)i << (8 * (macsize - 2))) +
                       (procid << (8 * (macsize - 1)));
    netlink_device_change(&nlmsg, sock, dev, !devtypes[i].noup, 0, &macaddr,
                          macsize, NULL);
  }
  close(sock);
}

static void setup_gadgetfs();
static void setup_binderfs();
static void setup_fusectl();
static void sandbox_common_mount_tmpfs(void)
{
  write_file("/proc/sys/fs/mount-max", "100000");
  if (mkdir("./syz-tmp", 0777))
    exit(1);
  if (mount("", "./syz-tmp", "tmpfs", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot", 0777))
    exit(1);
  if (mkdir("./syz-tmp/newroot/dev", 0700))
    exit(1);
  unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE;
  if (mount("/dev", "./syz-tmp/newroot/dev", NULL, bind_mount_flags, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/proc", 0700))
    exit(1);
  if (mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/selinux", 0700))
    exit(1);
  const char* selinux_path = "./syz-tmp/newroot/selinux";
  if (mount("/selinux", selinux_path, NULL, bind_mount_flags, NULL)) {
    if (errno != ENOENT)
      exit(1);
    if (mount("/sys/fs/selinux", selinux_path, NULL, bind_mount_flags, NULL) &&
        errno != ENOENT)
      exit(1);
  }
  if (mkdir("./syz-tmp/newroot/sys", 0700))
    exit(1);
  if (mount("/sys", "./syz-tmp/newroot/sys", 0, bind_mount_flags, NULL))
    exit(1);
  if (mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/proc/sys/fs/binfmt_misc",
            "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, bind_mount_flags,
            NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/newroot/syz-inputs", 0700))
    exit(1);
  if (mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL,
            bind_mount_flags | MS_RDONLY, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/pivot", 0777))
    exit(1);
  if (syscall(SYS_pivot_root, "./syz-tmp", "./syz-tmp/pivot")) {
    if (chdir("./syz-tmp"))
      exit(1);
  } else {
    if (chdir("/"))
      exit(1);
    if (umount2("./pivot", MNT_DETACH))
      exit(1);
  }
  if (chroot("./newroot"))
    exit(1);
  if (chdir("/"))
    exit(1);
  setup_gadgetfs();
  setup_binderfs();
  setup_fusectl();
}

static void setup_gadgetfs()
{
  if (mkdir("/dev/gadgetfs", 0777)) {
  }
  if (mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL)) {
  }
}

static void setup_fusectl()
{
  if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) {
  }
}

static void setup_binderfs()
{
  if (mkdir("/dev/binderfs", 0777)) {
  }
  if (mount("binder", "/dev/binderfs", "binder", 0, NULL)) {
  }
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  if (getppid() == 1)
    exit(1);
  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = (200 << 20);
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 32 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 136 << 20;
  setrlimit(RLIMIT_FSIZE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_STACK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 128 << 20;
  setrlimit(RLIMIT_CORE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 256;
  setrlimit(RLIMIT_NOFILE, &rlim);
  if (unshare(CLONE_NEWNS)) {
  }
  if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(0x02000000)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
  typedef struct {
    const char* name;
    const char* value;
  } sysctl_t;
  static const sysctl_t sysctls[] = {
      {"/proc/sys/kernel/shmmax", "16777216"},
      {"/proc/sys/kernel/shmall", "536870912"},
      {"/proc/sys/kernel/shmmni", "1024"},
      {"/proc/sys/kernel/msgmax", "8192"},
      {"/proc/sys/kernel/msgmni", "1024"},
      {"/proc/sys/kernel/msgmnb", "1024"},
      {"/proc/sys/kernel/sem", "1024 1048576 500 1024"},
  };
  unsigned i;
  for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++)
    write_file(sysctls[i].name, sysctls[i].value);
}

static int wait_for_loop(int pid)
{
  if (pid < 0)
    exit(1);
  int status = 0;
  while (waitpid(-1, &status, __WALL) != pid) {
  }
  return WEXITSTATUS(status);
}

static void drop_caps(void)
{
  struct __user_cap_header_struct cap_hdr = {};
  struct __user_cap_data_struct cap_data[2] = {};
  cap_hdr.version = _LINUX_CAPABILITY_VERSION_3;
  cap_hdr.pid = getpid();
  if (syscall(SYS_capget, &cap_hdr, &cap_data))
    exit(1);
  const int drop = (1 << CAP_SYS_PTRACE) | (1 << CAP_SYS_NICE);
  cap_data[0].effective &= ~drop;
  cap_data[0].permitted &= ~drop;
  cap_data[0].inheritable &= ~drop;
  if (syscall(SYS_capset, &cap_hdr, &cap_data))
    exit(1);
}

static int do_sandbox_none(void)
{
  if (unshare(CLONE_NEWPID)) {
  }
  int pid = fork();
  if (pid != 0)
    return wait_for_loop(pid);
  sandbox_common();
  drop_caps();
  initialize_netdevices_init();
  if (unshare(CLONE_NEWNET)) {
  }
  write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535");
  initialize_netdevices();
  sandbox_common_mount_tmpfs();
  loop();
  exit(1);
}

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0x0};

void loop(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  socket$xdp arguments: [
  //    domain: const = 0x2c (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //  ]
  //  returns sock_xdp
  res = syscall(__NR_socket, /*domain=*/0x2cul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  //  setsockopt$XDP_UMEM_REG arguments: [
  //    fd: sock_xdp (resource)
  //    level: const = 0x11b (4 bytes)
  //    opt: const = 0x4 (4 bytes)
  //    val: ptr[in, xdp_umem_reg] {
  //      xdp_umem_reg {
  //        addr: ptr[out, buffer] {
  //          buffer: (DirOut)
  //        }
  //        len: xdp_umem_sizes = 0x2000 (8 bytes)
  //        chunk_size: xdp_umem_chunk_sizes = 0x800 (4 bytes)
  //        headroom: int32 = 0x0 (4 bytes)
  //        flags: xdp_umem_flags = 0x3 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    len: bytesize = 0x20 (8 bytes)
  //  ]
  *(uint64_t*)0x2000000000c0 = 0x200000100000;
  *(uint64_t*)0x2000000000c8 = 0x2000;
  *(uint32_t*)0x2000000000d0 = 0x800;
  *(uint32_t*)0x2000000000d4 = 0;
  *(uint32_t*)0x2000000000d8 = 3;
  syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0x11b, /*opt=*/4,
          /*val=*/0x2000000000c0ul, /*len=*/0x20ul);
  //  setsockopt$XDP_TX_RING arguments: [
  //    fd: sock_xdp (resource)
  //    level: const = 0x11b (4 bytes)
  //    opt: const = 0x3 (4 bytes)
  //    val: ptr[in, xdp_ring_sizes] {
  //      xdp_ring_sizes = 0x10 (4 bytes)
  //    }
  //    len: bytesize = 0x4 (8 bytes)
  //  ]
  *(uint32_t*)0x200000000040 = 0x10;
  syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0x11b, /*opt=*/3,
          /*val=*/0x200000000040ul, /*len=*/4ul);
  //  setsockopt$XDP_UMEM_COMPLETION_RING arguments: [
  //    fd: sock_xdp (resource)
  //    level: const = 0x11b (4 bytes)
  //    opt: const = 0x6 (4 bytes)
  //    val: ptr[in, xdp_ring_sizes] {
  //      xdp_ring_sizes = 0x10 (4 bytes)
  //    }
  //    len: bytesize = 0x4 (8 bytes)
  //  ]
  *(uint32_t*)0x200000000080 = 0x10;
  syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0x11b, /*opt=*/6,
          /*val=*/0x200000000080ul, /*len=*/4ul);
  //  setsockopt$XDP_UMEM_FILL_RING arguments: [
  //    fd: sock_xdp (resource)
  //    level: const = 0x11b (4 bytes)
  //    opt: const = 0x5 (4 bytes)
  //    val: ptr[in, xdp_ring_sizes] {
  //      xdp_ring_sizes = 0x10 (4 bytes)
  //    }
  //    len: bytesize = 0x4 (8 bytes)
  //  ]
  *(uint32_t*)0x200000000140 = 0x10;
  syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0x11b, /*opt=*/5,
          /*val=*/0x200000000140ul, /*len=*/4ul);
  //  socketpair$unix arguments: [
  //    domain: const = 0x1 (8 bytes)
  //    type: unix_socket_type = 0x1 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //    fds: ptr[out, unix_pair] {
  //      unix_pair {
  //        fd0: sock_unix (resource)
  //        fd1: sock_unix (resource)
  //      }
  //    }
  //  ]
  res = syscall(__NR_socketpair, /*domain=*/1ul, /*type=SOCK_STREAM*/ 1ul,
                /*proto=*/0, /*fds=*/0x2000000002c0ul);
  if (res != -1)
    r[1] = *(uint32_t*)0x2000000002c4;
  //  ioctl$sock_SIOCGIFINDEX arguments: [
  //    fd: sock (resource)
  //    cmd: const = 0x8933 (4 bytes)
  //    arg: ptr[out, ifreq_dev_t[devnames, ifindex]] {
  //      ifreq_dev_t[devnames, ifindex] {
  //        ifr_ifrn: buffer: {73 69 74 30 00 00 00 00 00 00 00 00 00 00 00 00}
  //        (length 0x10) elem: ifindex (resource) pad = 0x0 (20 bytes)
  //      }
  //    }
  //  ]
  memcpy((void*)0x200000000000,
         "sit0\000\000\000\000\000\000\000\000\000\000\000\000", 16);
  res = syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x8933,
                /*arg=*/0x200000000000ul);
  if (res != -1)
    r[2] = *(uint32_t*)0x200000000010;
  //  bind$xdp arguments: [
  //    fd: sock_xdp (resource)
  //    addr: ptr[in, sockaddr_xdp_bind] {
  //      sockaddr_xdp_bind {
  //        sxdp_family: const = 0x2c (2 bytes)
  //        sxdp_flags: sxdp_flags = 0x2 (2 bytes)
  //        sxdp_ifindex: ifindex (resource)
  //        sxdp_queue_id: int32 = 0x0 (4 bytes)
  //        sxdp_shared_umem_fd: sock_xdp (resource)
  //      }
  //    }
  //    len: bytesize = 0x10 (8 bytes)
  //  ]
  *(uint16_t*)0x2000000003c0 = 0x2c;
  *(uint16_t*)0x2000000003c2 = 2;
  *(uint32_t*)0x2000000003c4 = r[2];
  *(uint32_t*)0x2000000003c8 = 0;
  *(uint32_t*)0x2000000003cc = r[0];
  syscall(__NR_bind, /*fd=*/r[0], /*addr=*/0x2000000003c0ul, /*len=*/0x10ul);
  //  mmap$xdp arguments: [
  //    addr: VMA[0x1000]
  //    len: len = 0x1000 (4 bytes)
  //    prot: mmap_prot = 0x3 (8 bytes)
  //    flags: mmap_flags = 0x11 (8 bytes)
  //    fd: sock_xdp (resource)
  //    offset: xdp_mmap_offsets = 0x80000000 (8 bytes)
  //  ]
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000,
          /*prot=PROT_WRITE|PROT_READ*/ 3ul,
          /*flags=MAP_FIXED|MAP_SHARED*/ 0x11ul, /*fd=*/r[0],
          /*offset=XDP_PGOFF_TX_RING*/ 0x80000000ul);
  //  write$UHID_INPUT arguments: [
  //    fd: fd_uhid (resource)
  //    data: ptr[in, uhid_req[UHID_INPUT, uhid_input_req]] {
  //      uhid_req[UHID_INPUT, uhid_input_req] {
  //        type: const = 0xfc (4 bytes)
  //        data: uhid_input_req {
  //          data: buffer: {fc e3 ad 0e ed 0d 07 f9 1b 50 09 18 87 f7 07 06 d0
  //          38 e7 ff 7f c6 e5 53 9b 0d 3c 0a 8b 08 9b 3f 35 38 3a 31 08 90 e0
  //          87 9b 0a f8 c6 e7 0a 9b 33 4a 95 9b 66 9a 24 0d 0a 0a f3 98 8f 7e
  //          f3 19 52 01 00 ff e8 d1 78 70 8c 52 3c 92 1b 1b 23 31 07 20 07 73
  //          09 0a cd 3b 78 13 0d aa 61 d8 e8 04 00 40 00 58 02 b7 7f 07 22 72
  //          27 b7 ba 67 e0 e7 86 57 a6 f5 c2 a8 74 e6 2a 9c cd c0 d3 1a 0c 9f
  //          31 8c 0d a1 99 3b d1 60 e2 33 df 4a 62 17 9c 6f 30 e0 65 cd 5b 91
  //          cd 0a e1 93 97 37 35 b3 6d 5b 1b 63 dd 1c 00 30 5d 3f 46 63 5e b0
  //          16 d5 b1 dd a9 8e 2d 74 9b e7 bd 1d f1 fb 3b 23 1f dc db 50 75 a9
  //          aa a1 b4 69 c3 09 00 00 00 00 00 00 00 75 27 1b 28 63 29 d1 69 93
  //          42 88 fd 78 9a a3 7d 6e 98 b2 24 fd 44 b6 5b 31 33 4f fc 55 cc 82
  //          cd 3a c3 2e cd b0 8c ed 6f 90 81 b4 dd 0d 8b 38 f3 cd 44 98 be e8
  //          00 49 08 41 bd b1 14 f6 b7 63 83 70 9d 8f 5c 55 43 2a 90 9f da 03
  //          9a ec 54 a1 23 6e 80 f6 a8 ab ad ea 76 62 49 6b dd bb 42 be 6b de
  //          70 95 d6 a3 45 ba dc 56 c7 1b 19 31 87 02 62 f5 e8 01 11 92 42 ca
  //          02 6b fc 82 1e 7e 7d af 24 51 13 8e 64 5b b8 0c 61 76 69 31 4e 2f
  //          be 70 de 98 ec 76 a9 1e 0d ad 47 f3 6f d9 f7 3c 15 2a 4b 5f 11 85
  //          cc dc f1 6f f4 62 95 d8 a0 fa 17 71 3c 58 02 63 09 33 a9 a3 4a f6
  //          74 f3 f3 9f e2 34 91 23 7c 08 82 2d ec 11 09 11 e8 93 d0 a8 c4 f6
  //          77 74 7a bc 36 09 34 b8 29 10 ff 85 bf d9 95 08 3b ba 29 87 a6 73
  //          99 ea c4 27 d1 45 d5 46 a4 0b 9f 6f f1 4a c4 88 ec 13 0f b3 85 0a
  //          27 af 95 44 ae 15 a7 e4 54 de a0 59 18 b4 12 43 51 3f 00 00 00 00
  //          00 00 00 0a 36 21 c5 6c ea 8d 20 fa 91 1a 0c 41 db 6e be 8c ac 64
  //          f1 76 79 14 1d 54 b3 4b bc 99 63 ac 4f 4b b3 30 96 03 f1 d4 ab 96
  //          62 03 86 1b 5b 15 a8 41 f2 b5 75 a8 bd 0d 78 24 8e be 4d 9a 80 00
  //          26 95 10 4f 67 4c 24 31 dc a1 41 fa e2 69 ca b7 0e 9a 66 f3 c3 a9
  //          a6 3e 96 39 e1 f5 9c 0e de 26 c6 b5 d7 4b 07 8a 5e 15 c3 16 34 e5
  //          ae 09 8c e9 ee 70 77 1a aa 18 11 9a 86 7e 10 88 33 49 75 e9 f7 34
  //          83 b6 a6 2f a6 78 ca 14 ff d9 f9 db 2a 78 69 d8 58 64 05 65 26 f8
  //          89 af 43 a6 05 60 80 57 22 86 52 24 49 df 46 6c 63 2b 35 70 24 3f
  //          98 9c ce 7c d9 f4 65 e4 1e 61 0c 20 d8 04 21 d6 53 a5 c7 fb 08 2f
  //          f2 75 90 67 8e f9 f1 90 ba e9 79 09 50 70 41 d8 60 42 0c 56 64 b2
  //          79 21 b1 4d c1 db 88 92 fd 32 d0 ad 7b c9 46 81 35 91 ad 8d ef f4
  //          b0 5f 60 ce a0 da 77 10 ac 00 00 00 00 00 00 80 00 be a3 7c e0 d0
  //          d4 aa 20 2f 92 8f 28 38 1a ab 14 4a 5d 42 9a 04 a6 a2 b8 3c 70 68
  //          ae 94 9e d0 6e 28 8e 81 0b ac 9c 76 60 00 25 e1 9c 90 7f 8e a2 e2
  //          01 00 00 00 82 71 a1 f5 f8 52 8f 22 7e 79 c1 38 9d bd ff fe 49 2f
  //          21 57 9d 2c 15 b8 c7 0c db 1c 33 2d 86 d8 73 41 43 27 50 86 1e c2
  //          bc 34 51 ed ca 19 4b 22 1c fe c4 60 3d 27 6b ba a1 df a6 d4 fb 8a
  //          48 a7 6e a0 27 0e 4c 10 d6 4c d5 a6 24 27 26 4f 23 77 fe 76 3c 43
  //          47 08 33 7c 8d e9 8f 37 1b b9 43 a8 f1 b1 fd cc 7c bb 61 a7 cd b9
  //          74 4e d7 f9 12 9a ed e2 be 21 cc fd c4 e9 13 4f 86 84 b3 a4 f3 54
  //          da 9a 79 5e 96 33 4e 20 7d ff 70 f1 98 80 37 b2 ed 3a af 57 5c 0b
  //          88 d8 f1 46 68 40 78 41 6d 59 fd ee 53 25 92 89 74 d1 2d ad 99 da
  //          c4 4c 3f 00 08 04 70 96 a4 40 02 be bc 24 20 ae d9 2f a9 b6 57 8b
  //          47 79 41 5d 4a c0 1b 75 d5 49 5c 11 80 45 65 1c f4 1c 2f c4 8b 77
  //          8e fa 7e a5 67 77 47 43 0a f4 16 2b 98 7b 80 c3 e0 01 cd 34 e1 c9
  //          2f 76 cc 4c 24 ee b8 bc 4e 9a c2 ae d9 e5 38 03 ed 0c a4 ae 3a 97
  //          37 d2 14 06 00 05 ea 6f 17 83 e2 87 b3 be e9 6e 3a 72 6e af e2 fd
  //          fa a7 8d 1f 48 c1 3b 64 df 11 84 77 54 b8 40 0d aa a6 9b f5 c8 f4
  //          35 0a ea e9 ca 12 07 e7 82 83 cd 0b 20 ce b3 60 c7 e6 58 82 81 63
  //          e2 d2 5c 4a a3 48 56 1f 92 7e 88 f6 3a a7 0e 73 a5 e6 9b 3d f3 49
  //          59 03 f0 65 72 e1 e0 07 fa 55 a2 99 9f 59 6d 06 73 12 f5 77 9e 8d
  //          bf dc f3 42 71 38 f3 d4 44 d2 63 9a 10 47 7f 9b ec 4b 0b bb 6e 3c
  //          04 be 68 98 1f 39 22 03 dd 0e e3 ef 47 8e 16 da cf c5 e3 04 00 f7
  //          ab 8e 39 02 f1 b0 ff 03 4e f6 55 b2 53 ca 50 93 83 81 5b 1b 6f c6
  //          52 2d 4e 4f dc 11 a4 8c f4 2d 48 60 46 75 fd e2 b9 4c f0 05 00 a2
  //          69 08 91 ab f8 ab 9c 01 50 73 01 4d 9e 08 d4 33 8b 87 80 bd ec d4
  //          36 cf 05 41 35 9b af ff a4 52 37 f1 04 b9 62 10 40 3b 2d e9 ef ed
  //          49 6f 42 35 5b c7 87 2c 82 74 67 cf a5 c4 e7 27 30 d5 6b d0 68 ed
  //          21 1c f8 47 53 5e de cb 7b 37 3f 78 b0 95 b6 84 41 a3 4c b5 16 82
  //          a8 ae 4d 24 ad 04 65 81 92 7f 88 9b 81 30 76 03 8e 79 a7 96 2f b3
  //          85 a8 82 e8 02 0f 06 c4 c2 ba 1d d5 ca c7 c1 88 76 da 86 5d 25 87
  //          34 dd 73 58 3d f2 92 89 24 48 03 9e f7 99 cf 06 30 be cd cc e0 45
  //          79 b5 56 1d c8 25 ab 82 98 27 94 5e 02 0c 1f 67 ee 61 5f eb 62 43
  //          37 8e 06 10 06 0f 02 cc a4 e9 1b 2f 00 1e db 3d 78 fb 4b 55 66 8d
  //          da 93 ae c9 2a 5d e2 03 71 7a a4 9c 2d 28 4a cf ab e2 62 fc 83 c4
  //          6e b6 5c a8 10 4e 1b 4d a7 fb b7 7a b2 fc 04 3a ea d8 7c 32 ab 87
  //          5e e7 c2 e7 b7 01 9c 98 2c d3 b4 3e ae b1 a5 fb 13 5c 0c 7d ce e8
  //          fe 65 16 a3 28 03 2f 88 c0 42 89 18 24 65 9e 9e 94 26 5c 80 3b 35
  //          ee 5f 83 a2 b2 10 52 01 06 b8 a3 58 b5 0a b7 a1 fa 89 af 9c 25 1f
  //          e5 29 4b 3d 18 02 d5 67 6d 95 f1 60 ec 97 b1 ad 83 87 2c b2 04 46
  //          42 c3 7b 4a 6c c6 c0 4e ff c1 67 2d b7 e4 b6 8d 78 7d 9a 7a 50 8a
  //          e5 4b 3c d7 36 9d de 50 e8 c7 7d 95 a3 d3 61 c0 40 ba bb 17 16 07
  //          ca ac 2a 35 59 ad 4f 75 46 5f 49 c0 d0 ae 37 16 db 6e 00 cb 11 db
  //          4a 5f ad e2 a5 7c 10 23 8e 20 4a 67 73 7c 3b 42 aa e5 01 b2 0f 76
  //          94 a0 0f 16 e2 d0 17 40 35 a2 c2 26 56 dc 29 88 0a ce bd be 8d db
  //          a0 26 35 47 8d 8a c2 df ad 2b a3 a5 04 76 7b 6b 45 a4 59 57 f2 4d
  //          75 8e d0 24 b3 84 9c 11 d4 12 a2 a0 3b 40 47 49 70 22 d9 c3 0e 23
  //          ef 4d f5 c8 96 44 f4 8b b5 36 f7 94 00 00 00 00 dd ff 75 44 13 d1
  //          35 27 3e a8 e7 5f 22 f2 16 c6 b9 99 0a e7 18 06 f2 c0 0b 40 25 c4
  //          8b 75 c0 f7 3c db 9a 7b 8f a3 67 b5 00 28 06 7e 7f 16 f4 dd 56 9d
  //          46 2f 4f 19 ea cd b3 ed 70 ee eb b4 48 3f 8f d7 77 d4 43 e8 b4 04
  //          27 db 6f e2 90 68 c0 ca 3d 24 14 44 2e 8f 3a 15 47 04 b0 e5 1b c6
  //          64 a1 37 b2 6b e7 19 f4 f7 c9 a5 67 8a 67 4d fc 95 df 04 b9 ce 37
  //          5d d6 49 c8 c7 04 e5 09 bd 88 c8 e6 3d 8c 7d d6 70 71 11 5c 89 82
  //          ba 46 af 4d 6a dc c9 f6 8a 75 b9 39 7b 03 51 53 fa f4 63 66 e7 20
  //          5d d8 d6 f3 75 25 c1 a0 e9 46 10 dd 94 32 3f 6c 15 d0 85 19 71 49
  //          bf d6 65 55 48 cf d9 c5 2c 97 11 93 7f 79 ab b1 a1 24 f1 21 04 65
  //          48 3c d3 b2 d7 83 78 cf b8 5e d8 2e 7d a0 f6 eb 6d 27 9f 2a e4 55
  //          92 5d 0f 6f 1b a5 71 eb a2 81 f2 a6 54 fb 39 dd ff 3b 48 44 39 ff
  //          15 8e 78 54 19 e0 37 f3 e3 ad 03 8f 22 11 f1 03 31 95 56 3c 7f 93
  //          cd 54 b9 09 4f 22 6e 78 32 71 e1 e5 a2 a2 c1 07 12 ea b6 25 d6 49
  //          31 cd 4f fe 67 38 d9 7b 9b 5e f8 28 ee 9f b0 59 fc 01 af 0e 79 c1
  //          e1 4b 1d 25 98 8c 69 a3 99 56 7c 1d 93 76 8f 79 71 d3 14 88 b8 65
  //          8a 20 87 8b 7c 1d d7 ba 02 b7 fa 64 b6 de 3d 4a 33 39 a6 5d 50 7d
  //          c5 9c 51 09 7b 40 51 77 05 da 56 e9 eb f0 af a5 32 82 bf 86 db b5
  //          8c 54 80 69 ff 6e b9 5a ad e7 cc 66 d7 bb ef 72 47 79 ca 1f 73 1b
  //          33 46 ff 17 70 50 37 3d 79 ff 7b 3e 7f 9b c0 c1 b4 b2 66 a8 87 8b
  //          90 ba aa 03 9d 3e 3b 63 97 9a c3 df 6e 6f 48 59 af d5 02 ac 80 44
  //          ae 18 5d 2b a3 00 00 4e 73 67 68 64 ae 09 0d 81 ea ee 5e e6 cf 1d
  //          0a b3 78 dd 4d d8 91 e9 37 c2 ea 54 10 e0 51 30 05 00 00 00 00 00
  //          00 00 39 11 fa b9 64 c2 71 55 00 27 69 7b 52 16 06 87 46 16 02 f0
  //          8d f1 65 d8 84 b3 6e c2 b6 c2 5a 2f 33 c7 15 68 7e 9d 4a fb 96 d6
  //          86 1a ca 47 da 73 d6 f3 14 43 45 f4 88 43 dd 01 4e 5c 5a d8 fe 99
  //          57 54 bd 9c f3 2f ce 1e 31 91 9c 4b 20 82 fb 0a 30 b9 de ae 84 be
  //          d4 b2 80 45 63 40 73 c9 c5 8c 89 d9 e9 9c 81 76 91 77 c6 d5 94 f8
  //          8e 4f ac fd 4c 73 5a 20 30 7c 73 7a fa 2d 60 39 94 73 29 6b 83 1d
  //          bd 93 3d 93 99 0f 00 06 42 79 b1 0e a0 c5 83 3f 41 f1 57 ea 23 02
  //          99 3d be 97 fb 1a a3 a3 76 6d 54 39 02 04 84 f4 11 3c 4c 85 94 65
  //          c3 b4 15 c3 43 2f 81 db 87 19 53 9d 5b f3 72 aa ae a1 0c 00 a6 c5
  //          cb e5 97 58 bf ee 29 16 58 0d ac 4b 00 8e 59 5f 43 74 91 d8 7a be
  //          d0 2c ef cd 9d b5 3d 94 d0 2d ae e6 79 18 e5 d6 78 74 63 18 3b 4b
  //          87 c1 05 00 00 00 2f 78 09 95 9b c0 48 85 06 13 d1 7c a5 10 55 f2
  //          f4 16 a4 4f e1 80 d2 d5 0c 31 2c ca 7c b1 4a 2b dc 33 1f 57 a9 81
  //          71 39 a2 06 fc 76 95 72 27 ff ff 2d e2 0a 4b 8e 37 37 fb b4 29 13
  //          77 7c 06 37 6f 79 9e ba 36 7e 21 f9 4c a5 98 70 5f 5d cb 76 7d 6f
  //          09 00 d6 b0 f6 09 5e 53 c4 c4 23 4d 0c 1f be 43 4f 6a b8 f4 3c 00
  //          13 ee 93 b8 39 46 ee 77 59 e8 9d 7b dd 1a 32 d7 b3 11 71 1b 75 7f
  //          e4 3c 06 d2 1a 35 81 0d 8f e9 8b 27 fa ea 8a a1 2b c8 71 6e ef c5
  //          c9 7c 45 ac 33 ee ee 96 4c 52 14 bc 3a 93 59 bd ea 1c cc ab 94 f1
  //          5e 36 31 9c b3 4e bc ac ed b8 2c 2e d3 de 5a 8a 8f 00 11 e8 f7 4e
  //          82 d7 f9 60 93 53 0e 76 69 28 39 d7 96 19 39 ad fd ee ea ff 19 d1
  //          1e fc af b6 d5 46 fe f2 71 e8 9d 6c c2 38 9e 81 ff 58 ce fc ce 3f
  //          bf 46 25 a7 e7 de 40 e4 2e 07 b3 44 49 e1 5e 06 5c c7 34 00 02 00
  //          00 00 00 00 00 f2 88 a4 51 0d e0 3d ab 19 d2 62 85 ed a8 91 56 d5
  //          0d d3 85 a6 03 33 ba 5b bf 5d 77 cd 70 07 ad 15 19 ad 54 70 de 3d
  //          d6 d6 08 0c af cc f8 a9 74 06 bb 6b 68 a1 f0 c4 54 98 20 a7 3c 88
  //          0f 47 5f 73 2a e0 03 98 e8 bd 1f 41 08 b7 80 7f b3 3b 72 68 5e c3
  //          7a 2d 3f 76 64 13 a6 04 59 51 62 46 e5 a1 01 7a ef 09 48 a6 8c f2
  //          55 31 5a b8 0d d3 49 e8 91 ae f5 95 dc 4d 47 0e 8a c3 fc 37 d0 6a
  //          ea c2 89 c0 52 3f 48 3e 1f f7 40 8c 60 87 f1 ab 65 2f 2e f9 1d 4f
  //          2b 01 98 7b 0f 46 da 03 4e 5c 3f 74 5a 7e e8 10 1a 39 34 c5 4e 24
  //          b4 8e c0 27 5e 2d 06 87 dc 74 6b 08 27 cb f6 52 f4 06 c6 b9 5f 27
  //          22 e5 8c 05 f7 52 ce 21 02 59 6e 1c d7 65 5b 90 48 01 78 4c 41 6b
  //          22 f7 3d 32 46 78 e2 72 4f 43 f1 fe 68 7c 7e 8a 60 c2 8b 82 b6 52
  //          83 41 b6 48 cd d5 6f ed 7c dc bb 15 75 91 2d 5e cd 36 de a3 bc a0
  //          b7 42 7d 83 92 c6 28 94 55 e8 f8 d2 ab 22 42 72 92 51 ae 03 3a 9e
  //          02 21 0e 42 df 05 46 a7 4b 33 3a 1c 48 f9 5f d5 4a cb 57 41 25 9e
  //          8c 54 88 ef ee e3 27 41 5c c1 94 51 43 2c 6f 14 c2 76 93 10 2a 3c
  //          d8 48 57 cd 65 86 fc 5c a9 a9 3e b0 14 5f ac 06 62 ff 86 10 7f 99
  //          8a 8e f7 df 8a a1 40 46 c5 5b 03 d3 d4 7f 88 a8 d6 0f 77 74 a2 ee
  //          08 75 88 97 fb 41 1a 94 b3 c2 fc 5d 5f 0d b4 2c 04 56 ec 01 5f 08
  //          e5 24 7d 33 ae 2d 35 60 3f f8 45 4c 16 f8 34 28 56 93 51 25 10 2b
  //          b7 84 ed 71 48 b6 ce 43 1b 63 ee 35 6b 0c 78 5f 2f 47 b9 0e 29 38
  //          9f 22 fc 5b 59 a7 0e fa ea 2b d4 01 95 af 44 86 22 0d 70 2e 30 bf
  //          c4 3c 10 ec 23 ea 62 83 99 4a 7d de 4d cb 61 fe a6 b6 51 fb 1d 62
  //          45 8d 07 41 a1 28 30 05 2f cc 46 0d b0 43 af e5 25 62 9b 40 d7 ce
  //          e4 58 e4 cb 5e 93 0e d6 24 80 ec 43 a0 06 e3 93 36 d0 7c 2b 80 81
  //          c1 28 ad 27 06 f4 82 61 f7 89 74 84 c2 97 a1 a6 61 3b c1 8f 5a 38
  //          d4 42 76 8a f3 80 41 ef e0 3d 15 2e f9 5f f5 69 e7 6d b2 39 1f 45
  //          09 d7 f3 39 d9 2f db 4a 89 36 49 49 da 39 80 00 00 00 00 00 00 00
  //          d8 0a 4f e6 54 57 83 76 e5 99 af f3 56 5b 1d 53 1f 30 91 2b 99 45
  //          03 0b 81 ea 99 35 fd 46 ed b4 4a 78 f6 15 25 54 90 a4 b6 21 50 1f
  //          2a 9e 4d 24 62 4c 4d ac 92 74 11 8c 67 58 4f 5d 37 47 55 53 4d 7f
  //          68 f6 79 c4 ff 51 6a 9c 86 1a 0e 7e 65 86 8f cb 2b f1 cb 9a ea 4e
  //          05 df 72 27 9f db 0d 2b 9e 93 5c 5a f3 cf 47 4b ed 79 df c2 48 c1
  //          f5 ae a4 b8 b3 2c 5d 29 5e 57 07 9d 0f e6 62 a4 6b 7f 71 cd 47 74
  //          4d b8 6c 50 b7 04 c9 71 d9 02 95 c7 b2 c7 43 9a 2d 78 cc fa 79 b5
  //          fc 2b ff 6b bf 84 02 62 bf 89 39 4b 3e 06 91 60 f5 95 54 e5 02 dc
  //          ea 39 cb 31 3b 00 00 00 00 00 00 4c a7 c1 2f 45 85 8d 62 84 ca 62
  //          70 d6 b2 f0 e5 8f de d8 a7 b4 a3 02 a9 7b c6 41 df 07 6f 0b a2 b2
  //          6b bf cc 80 7c a0 ab b1 b4 43 22 26 9c 21 c5 ec 68 cb 06 8e a8 80
  //          67 d9 05 ea 91 7b b0 3e ef da eb de ab f2 d0 dc e8 09 97 c9 15 c8
  //          94 9d e9 92 58 7c 2c b5 fe 36 d7 d3 e5 db 21 b0 94 b8 b7 79 40 b5
  //          f0 77 22 e4 7a 08 d3 67 e5 f8 72 96 ec 66 4b 72 93 4b 99 b3 10 9a
  //          f6 5d 77 e8 6a bd 68 59 cd df 4b ba e1 f0 93 04 62 df 15 fd db c4
  //          85 62 ea 35 11 a8 06 5e f0 28 cf 12 f1 4d cf 6e be cd 8d 88 48 36
  //          17 4f af 1a a6 09 e5 f1 ee 11 62 df a1 3b dc 1f a7 cf aa db a8 5c
  //          72 e9 75 8f 03 a7 55 d0 be 53 f8 d2 a1 df b1 c6 8c c1 64 b0 a0 78
  //          0d 97 1a 96 ea 2c 4d 4c a0 39 8c 22 35 98 0a 93 07 b3 d5 bd 3b 01
  //          fa ff d0 a5 db ed 28 81 a9 70 0a f5 61 ac 8c 6b 00 00 00 00 00 00
  //          00 f9 6f 06 81 7f b9 03 72 92 7d b6 ff 95 9c 08 37 d2 e7 88 5d 94
  //          ff b0 96 9b e0 da f6 0a f9 31 09 eb 1d ee 72 e4 36 3f 51 af 62 af
  //          6f b2 a6 df 3b ec 89 82 2a 7a 0b 67 80 58 fa 3f ef 86 9c 14 8c d2
  //          f9 c5 5f 49 01 20 3a 9a 8a 2c 3e 90 f3 94 3d bc 10 36 0a 1a 49 70
  //          0d 1d fb f6 6d 69 f6 fb af 50 6c 8b cc e8 bb 0d 05 00 00 00 89 26
  //          40 7a 4e dd d5 d0 fc 5a 75 2f 90 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 23 dd 00 00 00 04 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00} (length 0x1000) size: len = 0x1000 (2
  //          bytes)
  //        }
  //      }
  //    }
  //    len: len = 0x1006 (8 bytes)
  //  ]
  *(uint32_t*)0x200000000000 = 0xfc;
  memcpy(
      (void*)0x200000000004,
      "\xfc\xe3\xad\x0e\xed\x0d\x07\xf9\x1b\x50\x09\x18\x87\xf7\x07\x06\xd0\x38"
      "\xe7\xff\x7f\xc6\xe5\x53\x9b\x0d\x3c\x0a\x8b\x08\x9b\x3f\x35\x38\x3a\x31"
      "\x08\x90\xe0\x87\x9b\x0a\xf8\xc6\xe7\x0a\x9b\x33\x4a\x95\x9b\x66\x9a\x24"
      "\x0d\x0a\x0a\xf3\x98\x8f\x7e\xf3\x19\x52\x01\x00\xff\xe8\xd1\x78\x70\x8c"
      "\x52\x3c\x92\x1b\x1b\x23\x31\x07\x20\x07\x73\x09\x0a\xcd\x3b\x78\x13\x0d"
      "\xaa\x61\xd8\xe8\x04\x00\x40\x00\x58\x02\xb7\x7f\x07\x22\x72\x27\xb7\xba"
      "\x67\xe0\xe7\x86\x57\xa6\xf5\xc2\xa8\x74\xe6\x2a\x9c\xcd\xc0\xd3\x1a\x0c"
      "\x9f\x31\x8c\x0d\xa1\x99\x3b\xd1\x60\xe2\x33\xdf\x4a\x62\x17\x9c\x6f\x30"
      "\xe0\x65\xcd\x5b\x91\xcd\x0a\xe1\x93\x97\x37\x35\xb3\x6d\x5b\x1b\x63\xdd"
      "\x1c\x00\x30\x5d\x3f\x46\x63\x5e\xb0\x16\xd5\xb1\xdd\xa9\x8e\x2d\x74\x9b"
      "\xe7\xbd\x1d\xf1\xfb\x3b\x23\x1f\xdc\xdb\x50\x75\xa9\xaa\xa1\xb4\x69\xc3"
      "\x09\x00\x00\x00\x00\x00\x00\x00\x75\x27\x1b\x28\x63\x29\xd1\x69\x93\x42"
      "\x88\xfd\x78\x9a\xa3\x7d\x6e\x98\xb2\x24\xfd\x44\xb6\x5b\x31\x33\x4f\xfc"
      "\x55\xcc\x82\xcd\x3a\xc3\x2e\xcd\xb0\x8c\xed\x6f\x90\x81\xb4\xdd\x0d\x8b"
      "\x38\xf3\xcd\x44\x98\xbe\xe8\x00\x49\x08\x41\xbd\xb1\x14\xf6\xb7\x63\x83"
      "\x70\x9d\x8f\x5c\x55\x43\x2a\x90\x9f\xda\x03\x9a\xec\x54\xa1\x23\x6e\x80"
      "\xf6\xa8\xab\xad\xea\x76\x62\x49\x6b\xdd\xbb\x42\xbe\x6b\xde\x70\x95\xd6"
      "\xa3\x45\xba\xdc\x56\xc7\x1b\x19\x31\x87\x02\x62\xf5\xe8\x01\x11\x92\x42"
      "\xca\x02\x6b\xfc\x82\x1e\x7e\x7d\xaf\x24\x51\x13\x8e\x64\x5b\xb8\x0c\x61"
      "\x76\x69\x31\x4e\x2f\xbe\x70\xde\x98\xec\x76\xa9\x1e\x0d\xad\x47\xf3\x6f"
      "\xd9\xf7\x3c\x15\x2a\x4b\x5f\x11\x85\xcc\xdc\xf1\x6f\xf4\x62\x95\xd8\xa0"
      "\xfa\x17\x71\x3c\x58\x02\x63\x09\x33\xa9\xa3\x4a\xf6\x74\xf3\xf3\x9f\xe2"
      "\x34\x91\x23\x7c\x08\x82\x2d\xec\x11\x09\x11\xe8\x93\xd0\xa8\xc4\xf6\x77"
      "\x74\x7a\xbc\x36\x09\x34\xb8\x29\x10\xff\x85\xbf\xd9\x95\x08\x3b\xba\x29"
      "\x87\xa6\x73\x99\xea\xc4\x27\xd1\x45\xd5\x46\xa4\x0b\x9f\x6f\xf1\x4a\xc4"
      "\x88\xec\x13\x0f\xb3\x85\x0a\x27\xaf\x95\x44\xae\x15\xa7\xe4\x54\xde\xa0"
      "\x59\x18\xb4\x12\x43\x51\x3f\x00\x00\x00\x00\x00\x00\x00\x0a\x36\x21\xc5"
      "\x6c\xea\x8d\x20\xfa\x91\x1a\x0c\x41\xdb\x6e\xbe\x8c\xac\x64\xf1\x76\x79"
      "\x14\x1d\x54\xb3\x4b\xbc\x99\x63\xac\x4f\x4b\xb3\x30\x96\x03\xf1\xd4\xab"
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      "\x26\xc6\xb5\xd7\x4b\x07\x8a\x5e\x15\xc3\x16\x34\xe5\xae\x09\x8c\xe9\xee"
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      "\x37\x1b\xb9\x43\xa8\xf1\xb1\xfd\xcc\x7c\xbb\x61\xa7\xcd\xb9\x74\x4e\xd7"
      "\xf9\x12\x9a\xed\xe2\xbe\x21\xcc\xfd\xc4\xe9\x13\x4f\x86\x84\xb3\xa4\xf3"
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      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x23\xdd"
      "\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
      4096);
  *(uint16_t*)0x200000001004 = 0x1000;
  syscall(__NR_write, /*fd=*/(intptr_t)-1, /*data=*/0x200000000000ul,
          /*len=*/0x1006ul);
  //  sendmsg$NFNL_MSG_CTHELPER_GET arguments: [
  //    fd: sock_nl_netfilter (resource)
  //    msg: ptr[in,
  //    msghdr_netlink[netlink_msg_netfilter_t[NFNL_SUBSYS_CTHELPER,
  //    NFNL_MSG_CTHELPER_GET, nfnl_cthelper_policy]]] {
  //      msghdr_netlink[netlink_msg_netfilter_t[NFNL_SUBSYS_CTHELPER,
  //      NFNL_MSG_CTHELPER_GET, nfnl_cthelper_policy]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_netfilter_t[NFNL_SUBSYS_CTHELPER,
  //        NFNL_MSG_CTHELPER_GET, nfnl_cthelper_policy]]] {
  //          iovec[in, netlink_msg_netfilter_t[NFNL_SUBSYS_CTHELPER,
  //          NFNL_MSG_CTHELPER_GET, nfnl_cthelper_policy]] {
  //            addr: nil
  //            len: len = 0x14 (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x0 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000180 = 0;
  *(uint32_t*)0x200000000188 = 0;
  *(uint64_t*)0x200000000190 = 0x200000000140;
  *(uint64_t*)0x200000000140 = 0;
  *(uint64_t*)0x200000000148 = 0x14;
  *(uint64_t*)0x200000000198 = 1;
  *(uint64_t*)0x2000000001a0 = 0;
  *(uint64_t*)0x2000000001a8 = 0;
  *(uint32_t*)0x2000000001b0 = 0;
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0x200000000180ul,
          /*f=*/0ul);
  //  pselect6 arguments: [
  //    n: len = 0x40 (8 bytes)
  //    inp: ptr[inout, fd_set] {
  //      fd_set {
  //        mask0: int64 = 0x0 (8 bytes)
  //        mask1: int64 = 0x3 (8 bytes)
  //        mask2: int64 = 0x10 (8 bytes)
  //        mask3: int64 = 0xe2 (8 bytes)
  //        mask4: int64 = 0x1 (8 bytes)
  //        mask5: int64 = 0x2 (8 bytes)
  //        mask6: int64 = 0x0 (8 bytes)
  //        mask7: int64 = 0x7 (8 bytes)
  //      }
  //    }
  //    outp: nil
  //    exp: ptr[inout, fd_set] {
  //      fd_set {
  //        mask0: int64 = 0x1f (8 bytes)
  //        mask1: int64 = 0x3 (8 bytes)
  //        mask2: int64 = 0x0 (8 bytes)
  //        mask3: int64 = 0xb1bd (8 bytes)
  //        mask4: int64 = 0x0 (8 bytes)
  //        mask5: int64 = 0xfffffffffffffffc (8 bytes)
  //        mask6: int64 = 0x0 (8 bytes)
  //        mask7: int64 = 0x9 (8 bytes)
  //      }
  //    }
  //    tvp: nil
  //    sig: nil
  //  ]
  *(uint64_t*)0x200000000100 = 0;
  *(uint64_t*)0x200000000108 = 3;
  *(uint64_t*)0x200000000110 = 0x10;
  *(uint64_t*)0x200000000118 = 0xe2;
  *(uint64_t*)0x200000000120 = 1;
  *(uint64_t*)0x200000000128 = 2;
  *(uint64_t*)0x200000000130 = 0;
  *(uint64_t*)0x200000000138 = 7;
  *(uint64_t*)0x200000000240 = 0x1f;
  *(uint64_t*)0x200000000248 = 3;
  *(uint64_t*)0x200000000250 = 0;
  *(uint64_t*)0x200000000258 = 0xb1bd;
  *(uint64_t*)0x200000000260 = 0;
  *(uint64_t*)0x200000000268 = 0xfffffffffffffffc;
  *(uint64_t*)0x200000000270 = 0;
  *(uint64_t*)0x200000000278 = 9;
  syscall(__NR_pselect6, /*n=*/0x40ul, /*inp=*/0x200000000100ul, /*outp=*/0ul,
          /*exp=*/0x200000000240ul, /*tvp=*/0ul, /*sig=*/0ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  do_sandbox_none();
  return 0;
}