// https://syzkaller.appspot.com/bug?id=fba4d05c2b91aacea325441c353e73e0049d8c37
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <arpa/inet.h>
#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <netinet/in.h>
#include <pthread.h>
#include <sched.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/epoll.h>
#include <sys/ioctl.h>
#include <sys/mman.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 <time.h>
#include <unistd.h>

#include <linux/capability.h>
#include <linux/futex.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/loop.h>
#include <linux/neighbour.h>
#include <linux/net.h>
#include <linux/netlink.h>
#include <linux/nl80211.h>
#include <linux/rfkill.h>
#include <linux/rtnetlink.h>
#include <linux/tcp.h>
#include <linux/veth.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

static unsigned long long procid;

static __thread int clone_ongoing;
static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) {
    exit(sig);
  }
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0;
  int valid = addr < prog_start || addr > prog_end;
  if (skip && valid) {
    _longjmp(segv_env, 1);
  }
  exit(sig);
}

static void install_segv_handler(void)
{
  struct sigaction sa;
  memset(&sa, 0, sizeof(sa));
  sa.sa_handler = SIG_IGN;
  syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8);
  syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8);
  memset(&sa, 0, sizeof(sa));
  sa.sa_sigaction = segv_handler;
  sa.sa_flags = SA_NODEFER | SA_SIGINFO;
  sigaction(SIGSEGV, &sa, NULL);
  sigaction(SIGBUS, &sa, NULL);
}

#define NONFAILING(...)                                                        \
  ({                                                                           \
    int ok = 1;                                                                \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    if (_setjmp(segv_env) == 0) {                                              \
      __VA_ARGS__;                                                             \
    } else                                                                     \
      ok = 0;                                                                  \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    ok;                                                                        \
  })

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static void use_temporary_dir(void)
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    exit(1);
  if (chmod(tmpdir, 0777))
    exit(1);
  if (chdir(tmpdir))
    exit(1);
}

static void thread_start(void* (*fn)(void*), void* arg)
{
  pthread_t th;
  pthread_attr_t attr;
  pthread_attr_init(&attr);
  pthread_attr_setstacksize(&attr, 128 << 10);
  int i = 0;
  for (; i < 100; i++) {
    if (pthread_create(&th, &attr, fn, arg) == 0) {
      pthread_attr_destroy(&attr);
      return;
    }
    if (errno == EAGAIN) {
      usleep(50);
      continue;
    }
    break;
  }
  exit(1);
}

typedef struct {
  int state;
} event_t;

static void event_init(event_t* ev)
{
  ev->state = 0;
}

static void event_reset(event_t* ev)
{
  ev->state = 0;
}

static void event_set(event_t* ev)
{
  if (ev->state)
    exit(1);
  __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE);
  syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000);
}

static void event_wait(event_t* ev)
{
  while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0);
}

static int event_isset(event_t* ev)
{
  return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE);
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
  uint64_t start = current_time_ms();
  uint64_t now = start;
  for (;;) {
    uint64_t remain = timeout - (now - start);
    struct timespec ts;
    ts.tv_sec = remain / 1000;
    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts);
    if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
      return 1;
    now = current_time_ms();
    if (now - start > timeout)
      return 0;
  }
}

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 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 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 void netlink_add_neigh(struct nlmsg* nlmsg, int sock, const char* name,
                              const void* addr, int addrsize, const void* mac,
                              int macsize)
{
  struct ndmsg hdr;
  memset(&hdr, 0, sizeof(hdr));
  hdr.ndm_family = addrsize == 4 ? AF_INET : AF_INET6;
  hdr.ndm_ifindex = if_nametoindex(name);
  hdr.ndm_state = NUD_PERMANENT;
  netlink_init(nlmsg, RTM_NEWNEIGH, NLM_F_EXCL | NLM_F_CREATE, &hdr,
               sizeof(hdr));
  netlink_attr(nlmsg, NDA_DST, addr, addrsize);
  netlink_attr(nlmsg, NDA_LLADDR, mac, macsize);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static struct nlmsg nlmsg;

static int tunfd = -1;

#define TUN_IFACE "syz_tun"
#define LOCAL_MAC 0xaaaaaaaaaaaa
#define REMOTE_MAC 0xaaaaaaaaaabb
#define LOCAL_IPV4 "172.20.20.170"
#define REMOTE_IPV4 "172.20.20.187"
#define LOCAL_IPV6 "fe80::aa"
#define REMOTE_IPV6 "fe80::bb"

#define IFF_NAPI 0x0010

static void initialize_tun(void)
{
  tunfd = open("/dev/net/tun", O_RDWR | O_NONBLOCK);
  if (tunfd == -1) {
    printf("tun: can't open /dev/net/tun: please enable CONFIG_TUN=y\n");
    printf("otherwise fuzzing or reproducing might not work as intended\n");
    return;
  }
  const int kTunFd = 200;
  if (dup2(tunfd, kTunFd) < 0)
    exit(1);
  close(tunfd);
  tunfd = kTunFd;
  struct ifreq ifr;
  memset(&ifr, 0, sizeof(ifr));
  strncpy(ifr.ifr_name, TUN_IFACE, IFNAMSIZ);
  ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
  if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0) {
    exit(1);
  }
  char sysctl[64];
  sprintf(sysctl, "/proc/sys/net/ipv6/conf/%s/accept_dad", TUN_IFACE);
  write_file(sysctl, "0");
  sprintf(sysctl, "/proc/sys/net/ipv6/conf/%s/router_solicitations", TUN_IFACE);
  write_file(sysctl, "0");
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock == -1)
    exit(1);
  netlink_add_addr4(&nlmsg, sock, TUN_IFACE, LOCAL_IPV4);
  netlink_add_addr6(&nlmsg, sock, TUN_IFACE, LOCAL_IPV6);
  uint64_t macaddr = REMOTE_MAC;
  struct in_addr in_addr;
  inet_pton(AF_INET, REMOTE_IPV4, &in_addr);
  netlink_add_neigh(&nlmsg, sock, TUN_IFACE, &in_addr, sizeof(in_addr),
                    &macaddr, ETH_ALEN);
  struct in6_addr in6_addr;
  inet_pton(AF_INET6, REMOTE_IPV6, &in6_addr);
  netlink_add_neigh(&nlmsg, sock, TUN_IFACE, &in6_addr, sizeof(in6_addr),
                    &macaddr, ETH_ALEN);
  macaddr = LOCAL_MAC;
  netlink_device_change(&nlmsg, sock, TUN_IFACE, true, 0, &macaddr, ETH_ALEN,
                        NULL);
  close(sock);
}

#define WIFI_INITIAL_DEVICE_COUNT 2
#define WIFI_MAC_BASE                                                          \
  {                                                                            \
    0x08, 0x02, 0x11, 0x00, 0x00, 0x00                                         \
  }
#define WIFI_IBSS_BSSID                                                        \
  {                                                                            \
    0x50, 0x50, 0x50, 0x50, 0x50, 0x50                                         \
  }
#define WIFI_IBSS_SSID                                                         \
  {                                                                            \
    0x10, 0x10, 0x10, 0x10, 0x10, 0x10                                         \
  }
#define WIFI_DEFAULT_FREQUENCY 2412
#define WIFI_DEFAULT_SIGNAL 0
#define WIFI_DEFAULT_RX_RATE 1
#define HWSIM_CMD_REGISTER 1
#define HWSIM_CMD_FRAME 2
#define HWSIM_CMD_NEW_RADIO 4
#define HWSIM_ATTR_SUPPORT_P2P_DEVICE 14
#define HWSIM_ATTR_PERM_ADDR 22

#define IF_OPER_UP 6
struct join_ibss_props {
  int wiphy_freq;
  bool wiphy_freq_fixed;
  uint8_t* mac;
  uint8_t* ssid;
  int ssid_len;
};

static int set_interface_state(const char* interface_name, int on)
{
  struct ifreq ifr;
  int sock = socket(AF_INET, SOCK_DGRAM, 0);
  if (sock < 0) {
    return -1;
  }
  memset(&ifr, 0, sizeof(ifr));
  strcpy(ifr.ifr_name, interface_name);
  int ret = ioctl(sock, SIOCGIFFLAGS, &ifr);
  if (ret < 0) {
    close(sock);
    return -1;
  }
  if (on)
    ifr.ifr_flags |= IFF_UP;
  else
    ifr.ifr_flags &= ~IFF_UP;
  ret = ioctl(sock, SIOCSIFFLAGS, &ifr);
  close(sock);
  if (ret < 0) {
    return -1;
  }
  return 0;
}

static int nl80211_set_interface(struct nlmsg* nlmsg, int sock,
                                 int nl80211_family, uint32_t ifindex,
                                 uint32_t iftype)
{
  struct genlmsghdr genlhdr;
  memset(&genlhdr, 0, sizeof(genlhdr));
  genlhdr.cmd = NL80211_CMD_SET_INTERFACE;
  netlink_init(nlmsg, nl80211_family, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(nlmsg, NL80211_ATTR_IFINDEX, &ifindex, sizeof(ifindex));
  netlink_attr(nlmsg, NL80211_ATTR_IFTYPE, &iftype, sizeof(iftype));
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
  return err;
}

static int nl80211_join_ibss(struct nlmsg* nlmsg, int sock, int nl80211_family,
                             uint32_t ifindex, struct join_ibss_props* props)
{
  struct genlmsghdr genlhdr;
  memset(&genlhdr, 0, sizeof(genlhdr));
  genlhdr.cmd = NL80211_CMD_JOIN_IBSS;
  netlink_init(nlmsg, nl80211_family, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(nlmsg, NL80211_ATTR_IFINDEX, &ifindex, sizeof(ifindex));
  netlink_attr(nlmsg, NL80211_ATTR_SSID, props->ssid, props->ssid_len);
  netlink_attr(nlmsg, NL80211_ATTR_WIPHY_FREQ, &(props->wiphy_freq),
               sizeof(props->wiphy_freq));
  if (props->mac)
    netlink_attr(nlmsg, NL80211_ATTR_MAC, props->mac, ETH_ALEN);
  if (props->wiphy_freq_fixed)
    netlink_attr(nlmsg, NL80211_ATTR_FREQ_FIXED, NULL, 0);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
  return err;
}

static int get_ifla_operstate(struct nlmsg* nlmsg, int ifindex)
{
  struct ifinfomsg info;
  memset(&info, 0, sizeof(info));
  info.ifi_family = AF_UNSPEC;
  info.ifi_index = ifindex;
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock == -1) {
    return -1;
  }
  netlink_init(nlmsg, RTM_GETLINK, 0, &info, sizeof(info));
  int n;
  int err = netlink_send_ext(nlmsg, sock, RTM_NEWLINK, &n, true);
  close(sock);
  if (err) {
    return -1;
  }
  struct rtattr* attr = IFLA_RTA(NLMSG_DATA(nlmsg->buf));
  for (; RTA_OK(attr, n); attr = RTA_NEXT(attr, n)) {
    if (attr->rta_type == IFLA_OPERSTATE)
      return *((int32_t*)RTA_DATA(attr));
  }
  return -1;
}

static int await_ifla_operstate(struct nlmsg* nlmsg, char* interface,
                                int operstate)
{
  int ifindex = if_nametoindex(interface);
  while (true) {
    usleep(1000);
    int ret = get_ifla_operstate(nlmsg, ifindex);
    if (ret < 0)
      return ret;
    if (ret == operstate)
      return 0;
  }
  return 0;
}

static int nl80211_setup_ibss_interface(struct nlmsg* nlmsg, int sock,
                                        int nl80211_family_id, char* interface,
                                        struct join_ibss_props* ibss_props)
{
  int ifindex = if_nametoindex(interface);
  if (ifindex == 0) {
    return -1;
  }
  int ret = nl80211_set_interface(nlmsg, sock, nl80211_family_id, ifindex,
                                  NL80211_IFTYPE_ADHOC);
  if (ret < 0) {
    return -1;
  }
  ret = set_interface_state(interface, 1);
  if (ret < 0) {
    return -1;
  }
  ret = nl80211_join_ibss(nlmsg, sock, nl80211_family_id, ifindex, ibss_props);
  if (ret < 0) {
    return -1;
  }
  return 0;
}

static int hwsim80211_create_device(struct nlmsg* nlmsg, int sock,
                                    int hwsim_family,
                                    uint8_t mac_addr[ETH_ALEN])
{
  struct genlmsghdr genlhdr;
  memset(&genlhdr, 0, sizeof(genlhdr));
  genlhdr.cmd = HWSIM_CMD_NEW_RADIO;
  netlink_init(nlmsg, hwsim_family, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(nlmsg, HWSIM_ATTR_SUPPORT_P2P_DEVICE, NULL, 0);
  netlink_attr(nlmsg, HWSIM_ATTR_PERM_ADDR, mac_addr, ETH_ALEN);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
  return err;
}

static void initialize_wifi_devices(void)
{
  int rfkill = open("/dev/rfkill", O_RDWR);
  if (rfkill == -1) {
    if (errno != ENOENT && errno != EACCES)
      exit(1);
  } else {
    struct rfkill_event event = {0};
    event.type = RFKILL_TYPE_ALL;
    event.op = RFKILL_OP_CHANGE_ALL;
    if (write(rfkill, &event, sizeof(event)) != (ssize_t)(sizeof(event)))
      exit(1);
    close(rfkill);
  }
  uint8_t mac_addr[6] = WIFI_MAC_BASE;
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
  if (sock < 0) {
    return;
  }
  int hwsim_family_id =
      netlink_query_family_id(&nlmsg, sock, "MAC80211_HWSIM", true);
  int nl80211_family_id =
      netlink_query_family_id(&nlmsg, sock, "nl80211", true);
  uint8_t ssid[] = WIFI_IBSS_SSID;
  uint8_t bssid[] = WIFI_IBSS_BSSID;
  struct join_ibss_props ibss_props = {.wiphy_freq = WIFI_DEFAULT_FREQUENCY,
                                       .wiphy_freq_fixed = true,
                                       .mac = bssid,
                                       .ssid = ssid,
                                       .ssid_len = sizeof(ssid)};
  for (int device_id = 0; device_id < WIFI_INITIAL_DEVICE_COUNT; device_id++) {
    mac_addr[5] = device_id;
    int ret = hwsim80211_create_device(&nlmsg, sock, hwsim_family_id, mac_addr);
    if (ret < 0)
      exit(1);
    char interface[6] = "wlan0";
    interface[4] += device_id;
    if (nl80211_setup_ibss_interface(&nlmsg, sock, nl80211_family_id, interface,
                                     &ibss_props) < 0)
      exit(1);
  }
  for (int device_id = 0; device_id < WIFI_INITIAL_DEVICE_COUNT; device_id++) {
    char interface[6] = "wlan0";
    interface[4] += device_id;
    int ret = await_ifla_operstate(&nlmsg, interface, IF_OPER_UP);
    if (ret < 0)
      exit(1);
  }
  close(sock);
}

static int read_tun(char* data, int size)
{
  if (tunfd < 0)
    return -1;
  int rv = read(tunfd, data, size);
  if (rv < 0) {
    if (errno == EAGAIN || errno == EBADFD)
      return -1;
    exit(1);
  }
  return rv;
}

static void flush_tun()
{
  char data[1000];
  while (read_tun(&data[0], sizeof(data)) != -1) {
  }
}

#define MAX_FDS 30

#define BTPROTO_HCI 1
#define ACL_LINK 1
#define SCAN_PAGE 2

typedef struct {
  uint8_t b[6];
} __attribute__((packed)) bdaddr_t;

#define HCI_COMMAND_PKT 1
#define HCI_EVENT_PKT 4
#define HCI_VENDOR_PKT 0xff

struct hci_command_hdr {
  uint16_t opcode;
  uint8_t plen;
} __attribute__((packed));

struct hci_event_hdr {
  uint8_t evt;
  uint8_t plen;
} __attribute__((packed));

#define HCI_EV_CONN_COMPLETE 0x03
struct hci_ev_conn_complete {
  uint8_t status;
  uint16_t handle;
  bdaddr_t bdaddr;
  uint8_t link_type;
  uint8_t encr_mode;
} __attribute__((packed));

#define HCI_EV_CONN_REQUEST 0x04
struct hci_ev_conn_request {
  bdaddr_t bdaddr;
  uint8_t dev_class[3];
  uint8_t link_type;
} __attribute__((packed));

#define HCI_EV_REMOTE_FEATURES 0x0b
struct hci_ev_remote_features {
  uint8_t status;
  uint16_t handle;
  uint8_t features[8];
} __attribute__((packed));

#define HCI_EV_CMD_COMPLETE 0x0e
struct hci_ev_cmd_complete {
  uint8_t ncmd;
  uint16_t opcode;
} __attribute__((packed));

#define HCI_OP_WRITE_SCAN_ENABLE 0x0c1a

#define HCI_OP_READ_BUFFER_SIZE 0x1005
struct hci_rp_read_buffer_size {
  uint8_t status;
  uint16_t acl_mtu;
  uint8_t sco_mtu;
  uint16_t acl_max_pkt;
  uint16_t sco_max_pkt;
} __attribute__((packed));

#define HCI_OP_READ_BD_ADDR 0x1009
struct hci_rp_read_bd_addr {
  uint8_t status;
  bdaddr_t bdaddr;
} __attribute__((packed));

#define HCI_EV_LE_META 0x3e
struct hci_ev_le_meta {
  uint8_t subevent;
} __attribute__((packed));

#define HCI_EV_LE_CONN_COMPLETE 0x01
struct hci_ev_le_conn_complete {
  uint8_t status;
  uint16_t handle;
  uint8_t role;
  uint8_t bdaddr_type;
  bdaddr_t bdaddr;
  uint16_t interval;
  uint16_t latency;
  uint16_t supervision_timeout;
  uint8_t clk_accurancy;
} __attribute__((packed));

struct hci_dev_req {
  uint16_t dev_id;
  uint32_t dev_opt;
};

struct vhci_vendor_pkt_request {
  uint8_t type;
  uint8_t opcode;
} __attribute__((packed));

struct vhci_pkt {
  uint8_t type;
  union {
    struct {
      uint8_t opcode;
      uint16_t id;
    } __attribute__((packed)) vendor_pkt;
    struct hci_command_hdr command_hdr;
  };
} __attribute__((packed));

#define HCIDEVUP _IOW('H', 201, int)
#define HCISETSCAN _IOW('H', 221, int)

static int vhci_fd = -1;

static void rfkill_unblock_all()
{
  int fd = open("/dev/rfkill", O_WRONLY);
  if (fd < 0)
    exit(1);
  struct rfkill_event event = {0};
  event.idx = 0;
  event.type = RFKILL_TYPE_ALL;
  event.op = RFKILL_OP_CHANGE_ALL;
  event.soft = 0;
  event.hard = 0;
  if (write(fd, &event, sizeof(event)) < 0)
    exit(1);
  close(fd);
}

static void hci_send_event_packet(int fd, uint8_t evt, void* data,
                                  size_t data_len)
{
  struct iovec iv[3];
  struct hci_event_hdr hdr;
  hdr.evt = evt;
  hdr.plen = data_len;
  uint8_t type = HCI_EVENT_PKT;
  iv[0].iov_base = &type;
  iv[0].iov_len = sizeof(type);
  iv[1].iov_base = &hdr;
  iv[1].iov_len = sizeof(hdr);
  iv[2].iov_base = data;
  iv[2].iov_len = data_len;
  if (writev(fd, iv, sizeof(iv) / sizeof(struct iovec)) < 0)
    exit(1);
}

static void hci_send_event_cmd_complete(int fd, uint16_t opcode, void* data,
                                        size_t data_len)
{
  struct iovec iv[4];
  struct hci_event_hdr hdr;
  hdr.evt = HCI_EV_CMD_COMPLETE;
  hdr.plen = sizeof(struct hci_ev_cmd_complete) + data_len;
  struct hci_ev_cmd_complete evt_hdr;
  evt_hdr.ncmd = 1;
  evt_hdr.opcode = opcode;
  uint8_t type = HCI_EVENT_PKT;
  iv[0].iov_base = &type;
  iv[0].iov_len = sizeof(type);
  iv[1].iov_base = &hdr;
  iv[1].iov_len = sizeof(hdr);
  iv[2].iov_base = &evt_hdr;
  iv[2].iov_len = sizeof(evt_hdr);
  iv[3].iov_base = data;
  iv[3].iov_len = data_len;
  if (writev(fd, iv, sizeof(iv) / sizeof(struct iovec)) < 0)
    exit(1);
}

static bool process_command_pkt(int fd, char* buf, ssize_t buf_size)
{
  struct hci_command_hdr* hdr = (struct hci_command_hdr*)buf;
  if (buf_size < (ssize_t)sizeof(struct hci_command_hdr) ||
      hdr->plen != buf_size - sizeof(struct hci_command_hdr))
    exit(1);
  switch (hdr->opcode) {
  case HCI_OP_WRITE_SCAN_ENABLE: {
    uint8_t status = 0;
    hci_send_event_cmd_complete(fd, hdr->opcode, &status, sizeof(status));
    return true;
  }
  case HCI_OP_READ_BD_ADDR: {
    struct hci_rp_read_bd_addr rp = {0};
    rp.status = 0;
    memset(&rp.bdaddr, 0xaa, 6);
    hci_send_event_cmd_complete(fd, hdr->opcode, &rp, sizeof(rp));
    return false;
  }
  case HCI_OP_READ_BUFFER_SIZE: {
    struct hci_rp_read_buffer_size rp = {0};
    rp.status = 0;
    rp.acl_mtu = 1021;
    rp.sco_mtu = 96;
    rp.acl_max_pkt = 4;
    rp.sco_max_pkt = 6;
    hci_send_event_cmd_complete(fd, hdr->opcode, &rp, sizeof(rp));
    return false;
  }
  }
  char dummy[0xf9] = {0};
  hci_send_event_cmd_complete(fd, hdr->opcode, dummy, sizeof(dummy));
  return false;
}

static void* event_thread(void* arg)
{
  while (1) {
    char buf[1024] = {0};
    ssize_t buf_size = read(vhci_fd, buf, sizeof(buf));
    if (buf_size < 0)
      exit(1);
    if (buf_size > 0 && buf[0] == HCI_COMMAND_PKT) {
      if (process_command_pkt(vhci_fd, buf + 1, buf_size - 1))
        break;
    }
  }
  return NULL;
}
#define HCI_HANDLE_1 200
#define HCI_HANDLE_2 201

#define HCI_PRIMARY 0
#define HCI_OP_RESET 0x0c03

static void initialize_vhci()
{
  int hci_sock = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
  if (hci_sock < 0)
    exit(1);
  vhci_fd = open("/dev/vhci", O_RDWR);
  if (vhci_fd == -1)
    exit(1);
  const int kVhciFd = 202;
  if (dup2(vhci_fd, kVhciFd) < 0)
    exit(1);
  close(vhci_fd);
  vhci_fd = kVhciFd;
  struct vhci_vendor_pkt_request vendor_pkt_req = {HCI_VENDOR_PKT, HCI_PRIMARY};
  if (write(vhci_fd, &vendor_pkt_req, sizeof(vendor_pkt_req)) !=
      sizeof(vendor_pkt_req))
    exit(1);
  struct vhci_pkt vhci_pkt;
  if (read(vhci_fd, &vhci_pkt, sizeof(vhci_pkt)) != sizeof(vhci_pkt))
    exit(1);
  if (vhci_pkt.type == HCI_COMMAND_PKT &&
      vhci_pkt.command_hdr.opcode == HCI_OP_RESET) {
    char response[1] = {0};
    hci_send_event_cmd_complete(vhci_fd, HCI_OP_RESET, response,
                                sizeof(response));
    if (read(vhci_fd, &vhci_pkt, sizeof(vhci_pkt)) != sizeof(vhci_pkt))
      exit(1);
  }
  if (vhci_pkt.type != HCI_VENDOR_PKT)
    exit(1);
  int dev_id = vhci_pkt.vendor_pkt.id;
  pthread_t th;
  if (pthread_create(&th, NULL, event_thread, NULL))
    exit(1);
  int ret = ioctl(hci_sock, HCIDEVUP, dev_id);
  if (ret) {
    if (errno == ERFKILL) {
      rfkill_unblock_all();
      ret = ioctl(hci_sock, HCIDEVUP, dev_id);
    }
    if (ret && errno != EALREADY)
      exit(1);
  }
  struct hci_dev_req dr = {0};
  dr.dev_id = dev_id;
  dr.dev_opt = SCAN_PAGE;
  if (ioctl(hci_sock, HCISETSCAN, &dr))
    exit(1);
  struct hci_ev_conn_request request;
  memset(&request, 0, sizeof(request));
  memset(&request.bdaddr, 0xaa, 6);
  *(uint8_t*)&request.bdaddr.b[5] = 0x10;
  request.link_type = ACL_LINK;
  hci_send_event_packet(vhci_fd, HCI_EV_CONN_REQUEST, &request,
                        sizeof(request));
  struct hci_ev_conn_complete complete;
  memset(&complete, 0, sizeof(complete));
  complete.status = 0;
  complete.handle = HCI_HANDLE_1;
  memset(&complete.bdaddr, 0xaa, 6);
  *(uint8_t*)&complete.bdaddr.b[5] = 0x10;
  complete.link_type = ACL_LINK;
  complete.encr_mode = 0;
  hci_send_event_packet(vhci_fd, HCI_EV_CONN_COMPLETE, &complete,
                        sizeof(complete));
  struct hci_ev_remote_features features;
  memset(&features, 0, sizeof(features));
  features.status = 0;
  features.handle = HCI_HANDLE_1;
  hci_send_event_packet(vhci_fd, HCI_EV_REMOTE_FEATURES, &features,
                        sizeof(features));
  struct {
    struct hci_ev_le_meta le_meta;
    struct hci_ev_le_conn_complete le_conn;
  } le_conn;
  memset(&le_conn, 0, sizeof(le_conn));
  le_conn.le_meta.subevent = HCI_EV_LE_CONN_COMPLETE;
  memset(&le_conn.le_conn.bdaddr, 0xaa, 6);
  *(uint8_t*)&le_conn.le_conn.bdaddr.b[5] = 0x11;
  le_conn.le_conn.role = 1;
  le_conn.le_conn.handle = HCI_HANDLE_2;
  hci_send_event_packet(vhci_fd, HCI_EV_LE_META, &le_conn, sizeof(le_conn));
  pthread_join(th, NULL);
  close(hci_sock);
}

//% This code is derived from puff.{c,h}, found in the zlib development. The
//% original files come with the following copyright notice:

//% Copyright (C) 2002-2013 Mark Adler, all rights reserved
//% version 2.3, 21 Jan 2013
//% This software is provided 'as-is', without any express or implied
//% warranty.  In no event will the author be held liable for any damages
//% arising from the use of this software.
//% Permission is granted to anyone to use this software for any purpose,
//% including commercial applications, and to alter it and redistribute it
//% freely, subject to the following restrictions:
//% 1. The origin of this software must not be misrepresented; you must not
//%    claim that you wrote the original software. If you use this software
//%    in a product, an acknowledgment in the product documentation would be
//%    appreciated but is not required.
//% 2. Altered source versions must be plainly marked as such, and must not be
//%    misrepresented as being the original software.
//% 3. This notice may not be removed or altered from any source distribution.
//% Mark Adler    madler@alumni.caltech.edu

//% BEGIN CODE DERIVED FROM puff.{c,h}

#define MAXBITS 15
#define MAXLCODES 286
#define MAXDCODES 30
#define MAXCODES (MAXLCODES + MAXDCODES)
#define FIXLCODES 288

struct puff_state {
  unsigned char* out;
  unsigned long outlen;
  unsigned long outcnt;
  const unsigned char* in;
  unsigned long inlen;
  unsigned long incnt;
  int bitbuf;
  int bitcnt;
  jmp_buf env;
};
static int puff_bits(struct puff_state* s, int need)
{
  long val = s->bitbuf;
  while (s->bitcnt < need) {
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    val |= (long)(s->in[s->incnt++]) << s->bitcnt;
    s->bitcnt += 8;
  }
  s->bitbuf = (int)(val >> need);
  s->bitcnt -= need;
  return (int)(val & ((1L << need) - 1));
}
static int puff_stored(struct puff_state* s)
{
  s->bitbuf = 0;
  s->bitcnt = 0;
  if (s->incnt + 4 > s->inlen)
    return 2;
  unsigned len = s->in[s->incnt++];
  len |= s->in[s->incnt++] << 8;
  if (s->in[s->incnt++] != (~len & 0xff) ||
      s->in[s->incnt++] != ((~len >> 8) & 0xff))
    return -2;
  if (s->incnt + len > s->inlen)
    return 2;
  if (s->outcnt + len > s->outlen)
    return 1;
  for (; len--; s->outcnt++, s->incnt++) {
    if (s->in[s->incnt])
      s->out[s->outcnt] = s->in[s->incnt];
  }
  return 0;
}
struct puff_huffman {
  short* count;
  short* symbol;
};
static int puff_decode(struct puff_state* s, const struct puff_huffman* h)
{
  int first = 0;
  int index = 0;
  int bitbuf = s->bitbuf;
  int left = s->bitcnt;
  int code = first = index = 0;
  int len = 1;
  short* next = h->count + 1;
  while (1) {
    while (left--) {
      code |= bitbuf & 1;
      bitbuf >>= 1;
      int count = *next++;
      if (code - count < first) {
        s->bitbuf = bitbuf;
        s->bitcnt = (s->bitcnt - len) & 7;
        return h->symbol[index + (code - first)];
      }
      index += count;
      first += count;
      first <<= 1;
      code <<= 1;
      len++;
    }
    left = (MAXBITS + 1) - len;
    if (left == 0)
      break;
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    bitbuf = s->in[s->incnt++];
    if (left > 8)
      left = 8;
  }
  return -10;
}
static int puff_construct(struct puff_huffman* h, const short* length, int n)
{
  int len;
  for (len = 0; len <= MAXBITS; len++)
    h->count[len] = 0;
  int symbol;
  for (symbol = 0; symbol < n; symbol++)
    (h->count[length[symbol]])++;
  if (h->count[0] == n)
    return 0;
  int left = 1;
  for (len = 1; len <= MAXBITS; len++) {
    left <<= 1;
    left -= h->count[len];
    if (left < 0)
      return left;
  }
  short offs[MAXBITS + 1];
  offs[1] = 0;
  for (len = 1; len < MAXBITS; len++)
    offs[len + 1] = offs[len] + h->count[len];
  for (symbol = 0; symbol < n; symbol++)
    if (length[symbol] != 0)
      h->symbol[offs[length[symbol]]++] = symbol;
  return left;
}
static int puff_codes(struct puff_state* s, const struct puff_huffman* lencode,
                      const struct puff_huffman* distcode)
{
  static const short lens[29] = {3,  4,  5,  6,   7,   8,   9,   10,  11, 13,
                                 15, 17, 19, 23,  27,  31,  35,  43,  51, 59,
                                 67, 83, 99, 115, 131, 163, 195, 227, 258};
  static const short lext[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2,
                                 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0};
  static const short dists[30] = {
      1,    2,    3,    4,    5,    7,    9,    13,    17,    25,
      33,   49,   65,   97,   129,  193,  257,  385,   513,   769,
      1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577};
  static const short dext[30] = {0, 0, 0,  0,  1,  1,  2,  2,  3,  3,
                                 4, 4, 5,  5,  6,  6,  7,  7,  8,  8,
                                 9, 9, 10, 10, 11, 11, 12, 12, 13, 13};
  int symbol;
  do {
    symbol = puff_decode(s, lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 256) {
      if (s->outcnt == s->outlen)
        return 1;
      if (symbol)
        s->out[s->outcnt] = symbol;
      s->outcnt++;
    } else if (symbol > 256) {
      symbol -= 257;
      if (symbol >= 29)
        return -10;
      int len = lens[symbol] + puff_bits(s, lext[symbol]);
      symbol = puff_decode(s, distcode);
      if (symbol < 0)
        return symbol;
      unsigned dist = dists[symbol] + puff_bits(s, dext[symbol]);
      if (dist > s->outcnt)
        return -11;
      if (s->outcnt + len > s->outlen)
        return 1;
      while (len--) {
        if (dist <= s->outcnt && s->out[s->outcnt - dist])
          s->out[s->outcnt] = s->out[s->outcnt - dist];
        s->outcnt++;
      }
    }
  } while (symbol != 256);
  return 0;
}
static int puff_fixed(struct puff_state* s)
{
  static int virgin = 1;
  static short lencnt[MAXBITS + 1], lensym[FIXLCODES];
  static short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  static struct puff_huffman lencode, distcode;
  if (virgin) {
    lencode.count = lencnt;
    lencode.symbol = lensym;
    distcode.count = distcnt;
    distcode.symbol = distsym;
    short lengths[FIXLCODES];
    int symbol;
    for (symbol = 0; symbol < 144; symbol++)
      lengths[symbol] = 8;
    for (; symbol < 256; symbol++)
      lengths[symbol] = 9;
    for (; symbol < 280; symbol++)
      lengths[symbol] = 7;
    for (; symbol < FIXLCODES; symbol++)
      lengths[symbol] = 8;
    puff_construct(&lencode, lengths, FIXLCODES);
    for (symbol = 0; symbol < MAXDCODES; symbol++)
      lengths[symbol] = 5;
    puff_construct(&distcode, lengths, MAXDCODES);
    virgin = 0;
  }
  return puff_codes(s, &lencode, &distcode);
}
static int puff_dynamic(struct puff_state* s)
{
  static const short order[19] = {16, 17, 18, 0, 8,  7, 9,  6, 10, 5,
                                  11, 4,  12, 3, 13, 2, 14, 1, 15};
  int nlen = puff_bits(s, 5) + 257;
  int ndist = puff_bits(s, 5) + 1;
  int ncode = puff_bits(s, 4) + 4;
  if (nlen > MAXLCODES || ndist > MAXDCODES)
    return -3;
  short lengths[MAXCODES];
  int index;
  for (index = 0; index < ncode; index++)
    lengths[order[index]] = puff_bits(s, 3);
  for (; index < 19; index++)
    lengths[order[index]] = 0;
  short lencnt[MAXBITS + 1], lensym[MAXLCODES];
  struct puff_huffman lencode = {lencnt, lensym};
  int err = puff_construct(&lencode, lengths, 19);
  if (err != 0)
    return -4;
  index = 0;
  while (index < nlen + ndist) {
    int symbol;
    int len;
    symbol = puff_decode(s, &lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 16)
      lengths[index++] = symbol;
    else {
      len = 0;
      if (symbol == 16) {
        if (index == 0)
          return -5;
        len = lengths[index - 1];
        symbol = 3 + puff_bits(s, 2);
      } else if (symbol == 17)
        symbol = 3 + puff_bits(s, 3);
      else
        symbol = 11 + puff_bits(s, 7);
      if (index + symbol > nlen + ndist)
        return -6;
      while (symbol--)
        lengths[index++] = len;
    }
  }
  if (lengths[256] == 0)
    return -9;
  err = puff_construct(&lencode, lengths, nlen);
  if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1]))
    return -7;
  short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  struct puff_huffman distcode = {distcnt, distsym};
  err = puff_construct(&distcode, lengths + nlen, ndist);
  if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1]))
    return -8;
  return puff_codes(s, &lencode, &distcode);
}
static int puff(unsigned char* dest, unsigned long* destlen,
                const unsigned char* source, unsigned long sourcelen)
{
  struct puff_state s = {
      .out = dest,
      .outlen = *destlen,
      .outcnt = 0,
      .in = source,
      .inlen = sourcelen,
      .incnt = 0,
      .bitbuf = 0,
      .bitcnt = 0,
  };
  int err;
  if (setjmp(s.env) != 0)
    err = 2;
  else {
    int last;
    do {
      last = puff_bits(&s, 1);
      int type = puff_bits(&s, 2);
      err = type == 0 ? puff_stored(&s)
                      : (type == 1 ? puff_fixed(&s)
                                   : (type == 2 ? puff_dynamic(&s) : -1));
      if (err != 0)
        break;
    } while (!last);
  }
  *destlen = s.outcnt;
  return err;
}

//% END CODE DERIVED FROM puff.{c,h}

#define ZLIB_HEADER_WIDTH 2

static int puff_zlib_to_file(const unsigned char* source,
                             unsigned long sourcelen, int dest_fd)
{
  if (sourcelen < ZLIB_HEADER_WIDTH)
    return 0;
  source += ZLIB_HEADER_WIDTH;
  sourcelen -= ZLIB_HEADER_WIDTH;
  const unsigned long max_destlen = 132 << 20;
  void* ret = mmap(0, max_destlen, PROT_WRITE | PROT_READ,
                   MAP_PRIVATE | MAP_ANON, -1, 0);
  if (ret == MAP_FAILED)
    return -1;
  unsigned char* dest = (unsigned char*)ret;
  unsigned long destlen = max_destlen;
  int err = puff(dest, &destlen, source, sourcelen);
  if (err) {
    munmap(dest, max_destlen);
    errno = -err;
    return -1;
  }
  if (write(dest_fd, dest, destlen) != (ssize_t)destlen) {
    munmap(dest, max_destlen);
    return -1;
  }
  return munmap(dest, destlen);
}

static int setup_loop_device(unsigned char* data, unsigned long size,
                             const char* loopname, int* loopfd_p)
{
  int err = 0, loopfd = -1;
  int memfd = syscall(__NR_memfd_create, "syzkaller", 0);
  if (memfd == -1) {
    err = errno;
    goto error;
  }
  if (puff_zlib_to_file(data, size, memfd)) {
    err = errno;
    goto error_close_memfd;
  }
  loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    err = errno;
    goto error_close_memfd;
  }
  if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
    if (errno != EBUSY) {
      err = errno;
      goto error_close_loop;
    }
    ioctl(loopfd, LOOP_CLR_FD, 0);
    usleep(1000);
    if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
      err = errno;
      goto error_close_loop;
    }
  }
  close(memfd);
  *loopfd_p = loopfd;
  return 0;

error_close_loop:
  close(loopfd);
error_close_memfd:
  close(memfd);
error:
  errno = err;
  return -1;
}

static long syz_mount_image(volatile long fsarg, volatile long dir,
                            volatile long flags, volatile long optsarg,
                            volatile long change_dir,
                            volatile unsigned long size, volatile long image)
{
  unsigned char* data = (unsigned char*)image;
  int res = -1, err = 0, loopfd = -1, need_loop_device = !!size;
  char* mount_opts = (char*)optsarg;
  char* target = (char*)dir;
  char* fs = (char*)fsarg;
  char* source = NULL;
  char loopname[64];
  if (need_loop_device) {
    memset(loopname, 0, sizeof(loopname));
    snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
    if (setup_loop_device(data, size, loopname, &loopfd) == -1)
      return -1;
    source = loopname;
  }
  mkdir(target, 0777);
  char opts[256];
  memset(opts, 0, sizeof(opts));
  if (strlen(mount_opts) > (sizeof(opts) - 32)) {
  }
  strncpy(opts, mount_opts, sizeof(opts) - 32);
  if (strcmp(fs, "iso9660") == 0) {
    flags |= MS_RDONLY;
  } else if (strncmp(fs, "ext", 3) == 0) {
    bool has_remount_ro = false;
    char* remount_ro_start = strstr(opts, "errors=remount-ro");
    if (remount_ro_start != NULL) {
      char after = *(remount_ro_start + strlen("errors=remount-ro"));
      char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1);
      has_remount_ro = ((before == '\0' || before == ',') &&
                        (after == '\0' || after == ','));
    }
    if (strstr(opts, "errors=panic") || !has_remount_ro)
      strcat(opts, ",errors=continue");
  } else if (strcmp(fs, "xfs") == 0) {
    strcat(opts, ",nouuid");
  }
  res = mount(source, target, fs, flags, opts);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  res = open(target, O_RDONLY | O_DIRECTORY);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  if (change_dir) {
    res = chdir(target);
    if (res == -1) {
      err = errno;
    }
  }

error_clear_loop:
  if (need_loop_device) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
  errno = err;
  return res;
}

#define XT_TABLE_SIZE 1536
#define XT_MAX_ENTRIES 10

struct xt_counters {
  uint64_t pcnt, bcnt;
};

struct ipt_getinfo {
  char name[32];
  unsigned int valid_hooks;
  unsigned int hook_entry[5];
  unsigned int underflow[5];
  unsigned int num_entries;
  unsigned int size;
};

struct ipt_get_entries {
  char name[32];
  unsigned int size;
  uint64_t entrytable[XT_TABLE_SIZE / sizeof(uint64_t)];
};

struct ipt_replace {
  char name[32];
  unsigned int valid_hooks;
  unsigned int num_entries;
  unsigned int size;
  unsigned int hook_entry[5];
  unsigned int underflow[5];
  unsigned int num_counters;
  struct xt_counters* counters;
  uint64_t entrytable[XT_TABLE_SIZE / sizeof(uint64_t)];
};

struct ipt_table_desc {
  const char* name;
  struct ipt_getinfo info;
  struct ipt_replace replace;
};

static struct ipt_table_desc ipv4_tables[] = {
    {.name = "filter"}, {.name = "nat"},      {.name = "mangle"},
    {.name = "raw"},    {.name = "security"},
};

static struct ipt_table_desc ipv6_tables[] = {
    {.name = "filter"}, {.name = "nat"},      {.name = "mangle"},
    {.name = "raw"},    {.name = "security"},
};

#define IPT_BASE_CTL 64
#define IPT_SO_SET_REPLACE (IPT_BASE_CTL)
#define IPT_SO_GET_INFO (IPT_BASE_CTL)
#define IPT_SO_GET_ENTRIES (IPT_BASE_CTL + 1)

struct arpt_getinfo {
  char name[32];
  unsigned int valid_hooks;
  unsigned int hook_entry[3];
  unsigned int underflow[3];
  unsigned int num_entries;
  unsigned int size;
};

struct arpt_get_entries {
  char name[32];
  unsigned int size;
  uint64_t entrytable[XT_TABLE_SIZE / sizeof(uint64_t)];
};

struct arpt_replace {
  char name[32];
  unsigned int valid_hooks;
  unsigned int num_entries;
  unsigned int size;
  unsigned int hook_entry[3];
  unsigned int underflow[3];
  unsigned int num_counters;
  struct xt_counters* counters;
  uint64_t entrytable[XT_TABLE_SIZE / sizeof(uint64_t)];
};

struct arpt_table_desc {
  const char* name;
  struct arpt_getinfo info;
  struct arpt_replace replace;
};

static struct arpt_table_desc arpt_tables[] = {
    {.name = "filter"},
};

#define ARPT_BASE_CTL 96
#define ARPT_SO_SET_REPLACE (ARPT_BASE_CTL)
#define ARPT_SO_GET_INFO (ARPT_BASE_CTL)
#define ARPT_SO_GET_ENTRIES (ARPT_BASE_CTL + 1)

static void checkpoint_iptables(struct ipt_table_desc* tables, int num_tables,
                                int family, int level)
{
  int fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
      return;
    }
    exit(1);
  }
  for (int i = 0; i < num_tables; i++) {
    struct ipt_table_desc* table = &tables[i];
    strcpy(table->info.name, table->name);
    strcpy(table->replace.name, table->name);
    socklen_t optlen = sizeof(table->info);
    if (getsockopt(fd, level, IPT_SO_GET_INFO, &table->info, &optlen)) {
      switch (errno) {
      case EPERM:
      case ENOENT:
      case ENOPROTOOPT:
        continue;
      }
      exit(1);
    }
    if (table->info.size > sizeof(table->replace.entrytable))
      exit(1);
    if (table->info.num_entries > XT_MAX_ENTRIES)
      exit(1);
    struct ipt_get_entries entries;
    memset(&entries, 0, sizeof(entries));
    strcpy(entries.name, table->name);
    entries.size = table->info.size;
    optlen = sizeof(entries) - sizeof(entries.entrytable) + table->info.size;
    if (getsockopt(fd, level, IPT_SO_GET_ENTRIES, &entries, &optlen))
      exit(1);
    table->replace.valid_hooks = table->info.valid_hooks;
    table->replace.num_entries = table->info.num_entries;
    table->replace.size = table->info.size;
    memcpy(table->replace.hook_entry, table->info.hook_entry,
           sizeof(table->replace.hook_entry));
    memcpy(table->replace.underflow, table->info.underflow,
           sizeof(table->replace.underflow));
    memcpy(table->replace.entrytable, entries.entrytable, table->info.size);
  }
  close(fd);
}

static void reset_iptables(struct ipt_table_desc* tables, int num_tables,
                           int family, int level)
{
  int fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
      return;
    }
    exit(1);
  }
  for (int i = 0; i < num_tables; i++) {
    struct ipt_table_desc* table = &tables[i];
    if (table->info.valid_hooks == 0)
      continue;
    struct ipt_getinfo info;
    memset(&info, 0, sizeof(info));
    strcpy(info.name, table->name);
    socklen_t optlen = sizeof(info);
    if (getsockopt(fd, level, IPT_SO_GET_INFO, &info, &optlen))
      exit(1);
    if (memcmp(&table->info, &info, sizeof(table->info)) == 0) {
      struct ipt_get_entries entries;
      memset(&entries, 0, sizeof(entries));
      strcpy(entries.name, table->name);
      entries.size = table->info.size;
      optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size;
      if (getsockopt(fd, level, IPT_SO_GET_ENTRIES, &entries, &optlen))
        exit(1);
      if (memcmp(table->replace.entrytable, entries.entrytable,
                 table->info.size) == 0)
        continue;
    }
    struct xt_counters counters[XT_MAX_ENTRIES];
    table->replace.num_counters = info.num_entries;
    table->replace.counters = counters;
    optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) +
             table->replace.size;
    if (setsockopt(fd, level, IPT_SO_SET_REPLACE, &table->replace, optlen))
      exit(1);
  }
  close(fd);
}

static void checkpoint_arptables(void)
{
  int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
      return;
    }
    exit(1);
  }
  for (unsigned i = 0; i < sizeof(arpt_tables) / sizeof(arpt_tables[0]); i++) {
    struct arpt_table_desc* table = &arpt_tables[i];
    strcpy(table->info.name, table->name);
    strcpy(table->replace.name, table->name);
    socklen_t optlen = sizeof(table->info);
    if (getsockopt(fd, SOL_IP, ARPT_SO_GET_INFO, &table->info, &optlen)) {
      switch (errno) {
      case EPERM:
      case ENOENT:
      case ENOPROTOOPT:
        continue;
      }
      exit(1);
    }
    if (table->info.size > sizeof(table->replace.entrytable))
      exit(1);
    if (table->info.num_entries > XT_MAX_ENTRIES)
      exit(1);
    struct arpt_get_entries entries;
    memset(&entries, 0, sizeof(entries));
    strcpy(entries.name, table->name);
    entries.size = table->info.size;
    optlen = sizeof(entries) - sizeof(entries.entrytable) + table->info.size;
    if (getsockopt(fd, SOL_IP, ARPT_SO_GET_ENTRIES, &entries, &optlen))
      exit(1);
    table->replace.valid_hooks = table->info.valid_hooks;
    table->replace.num_entries = table->info.num_entries;
    table->replace.size = table->info.size;
    memcpy(table->replace.hook_entry, table->info.hook_entry,
           sizeof(table->replace.hook_entry));
    memcpy(table->replace.underflow, table->info.underflow,
           sizeof(table->replace.underflow));
    memcpy(table->replace.entrytable, entries.entrytable, table->info.size);
  }
  close(fd);
}

static void reset_arptables()
{
  int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
      return;
    }
    exit(1);
  }
  for (unsigned i = 0; i < sizeof(arpt_tables) / sizeof(arpt_tables[0]); i++) {
    struct arpt_table_desc* table = &arpt_tables[i];
    if (table->info.valid_hooks == 0)
      continue;
    struct arpt_getinfo info;
    memset(&info, 0, sizeof(info));
    strcpy(info.name, table->name);
    socklen_t optlen = sizeof(info);
    if (getsockopt(fd, SOL_IP, ARPT_SO_GET_INFO, &info, &optlen))
      exit(1);
    if (memcmp(&table->info, &info, sizeof(table->info)) == 0) {
      struct arpt_get_entries entries;
      memset(&entries, 0, sizeof(entries));
      strcpy(entries.name, table->name);
      entries.size = table->info.size;
      optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size;
      if (getsockopt(fd, SOL_IP, ARPT_SO_GET_ENTRIES, &entries, &optlen))
        exit(1);
      if (memcmp(table->replace.entrytable, entries.entrytable,
                 table->info.size) == 0)
        continue;
    } else {
    }
    struct xt_counters counters[XT_MAX_ENTRIES];
    table->replace.num_counters = info.num_entries;
    table->replace.counters = counters;
    optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) +
             table->replace.size;
    if (setsockopt(fd, SOL_IP, ARPT_SO_SET_REPLACE, &table->replace, optlen))
      exit(1);
  }
  close(fd);
}

#define NF_BR_NUMHOOKS 6
#define EBT_TABLE_MAXNAMELEN 32
#define EBT_CHAIN_MAXNAMELEN 32
#define EBT_BASE_CTL 128
#define EBT_SO_SET_ENTRIES (EBT_BASE_CTL)
#define EBT_SO_GET_INFO (EBT_BASE_CTL)
#define EBT_SO_GET_ENTRIES (EBT_SO_GET_INFO + 1)
#define EBT_SO_GET_INIT_INFO (EBT_SO_GET_ENTRIES + 1)
#define EBT_SO_GET_INIT_ENTRIES (EBT_SO_GET_INIT_INFO + 1)

struct ebt_replace {
  char name[EBT_TABLE_MAXNAMELEN];
  unsigned int valid_hooks;
  unsigned int nentries;
  unsigned int entries_size;
  struct ebt_entries* hook_entry[NF_BR_NUMHOOKS];
  unsigned int num_counters;
  struct ebt_counter* counters;
  char* entries;
};

struct ebt_entries {
  unsigned int distinguisher;
  char name[EBT_CHAIN_MAXNAMELEN];
  unsigned int counter_offset;
  int policy;
  unsigned int nentries;
  char data[0] __attribute__((aligned(__alignof__(struct ebt_replace))));
};

struct ebt_table_desc {
  const char* name;
  struct ebt_replace replace;
  char entrytable[XT_TABLE_SIZE];
};

static struct ebt_table_desc ebt_tables[] = {
    {.name = "filter"},
    {.name = "nat"},
    {.name = "broute"},
};

static void checkpoint_ebtables(void)
{
  int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
      return;
    }
    exit(1);
  }
  for (size_t i = 0; i < sizeof(ebt_tables) / sizeof(ebt_tables[0]); i++) {
    struct ebt_table_desc* table = &ebt_tables[i];
    strcpy(table->replace.name, table->name);
    socklen_t optlen = sizeof(table->replace);
    if (getsockopt(fd, SOL_IP, EBT_SO_GET_INIT_INFO, &table->replace,
                   &optlen)) {
      switch (errno) {
      case EPERM:
      case ENOENT:
      case ENOPROTOOPT:
        continue;
      }
      exit(1);
    }
    if (table->replace.entries_size > sizeof(table->entrytable))
      exit(1);
    table->replace.num_counters = 0;
    table->replace.entries = table->entrytable;
    optlen = sizeof(table->replace) + table->replace.entries_size;
    if (getsockopt(fd, SOL_IP, EBT_SO_GET_INIT_ENTRIES, &table->replace,
                   &optlen))
      exit(1);
  }
  close(fd);
}

static void reset_ebtables()
{
  int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
      return;
    }
    exit(1);
  }
  for (unsigned i = 0; i < sizeof(ebt_tables) / sizeof(ebt_tables[0]); i++) {
    struct ebt_table_desc* table = &ebt_tables[i];
    if (table->replace.valid_hooks == 0)
      continue;
    struct ebt_replace replace;
    memset(&replace, 0, sizeof(replace));
    strcpy(replace.name, table->name);
    socklen_t optlen = sizeof(replace);
    if (getsockopt(fd, SOL_IP, EBT_SO_GET_INFO, &replace, &optlen))
      exit(1);
    replace.num_counters = 0;
    table->replace.entries = 0;
    for (unsigned h = 0; h < NF_BR_NUMHOOKS; h++)
      table->replace.hook_entry[h] = 0;
    if (memcmp(&table->replace, &replace, sizeof(table->replace)) == 0) {
      char entrytable[XT_TABLE_SIZE];
      memset(&entrytable, 0, sizeof(entrytable));
      replace.entries = entrytable;
      optlen = sizeof(replace) + replace.entries_size;
      if (getsockopt(fd, SOL_IP, EBT_SO_GET_ENTRIES, &replace, &optlen))
        exit(1);
      if (memcmp(table->entrytable, entrytable, replace.entries_size) == 0)
        continue;
    }
    for (unsigned j = 0, h = 0; h < NF_BR_NUMHOOKS; h++) {
      if (table->replace.valid_hooks & (1 << h)) {
        table->replace.hook_entry[h] =
            (struct ebt_entries*)table->entrytable + j;
        j++;
      }
    }
    table->replace.entries = table->entrytable;
    optlen = sizeof(table->replace) + table->replace.entries_size;
    if (setsockopt(fd, SOL_IP, EBT_SO_SET_ENTRIES, &table->replace, optlen))
      exit(1);
  }
  close(fd);
}

static void checkpoint_net_namespace(void)
{
  checkpoint_ebtables();
  checkpoint_arptables();
  checkpoint_iptables(ipv4_tables, sizeof(ipv4_tables) / sizeof(ipv4_tables[0]),
                      AF_INET, SOL_IP);
  checkpoint_iptables(ipv6_tables, sizeof(ipv6_tables) / sizeof(ipv6_tables[0]),
                      AF_INET6, SOL_IPV6);
}

static void reset_net_namespace(void)
{
  reset_ebtables();
  reset_arptables();
  reset_iptables(ipv4_tables, sizeof(ipv4_tables) / sizeof(ipv4_tables[0]),
                 AF_INET, SOL_IP);
  reset_iptables(ipv6_tables, sizeof(ipv6_tables) / sizeof(ipv6_tables[0]),
                 AF_INET6, SOL_IPV6);
}

static void mount_cgroups(const char* dir, const char** controllers, int count)
{
  if (mkdir(dir, 0777)) {
    return;
  }
  char enabled[128] = {0};
  int i = 0;
  for (; i < count; i++) {
    if (mount("none", dir, "cgroup", 0, controllers[i])) {
      continue;
    }
    umount(dir);
    strcat(enabled, ",");
    strcat(enabled, controllers[i]);
  }
  if (enabled[0] == 0) {
    if (rmdir(dir) && errno != EBUSY)
      exit(1);
    return;
  }
  if (mount("none", dir, "cgroup", 0, enabled + 1)) {
    if (rmdir(dir) && errno != EBUSY)
      exit(1);
  }
  if (chmod(dir, 0777)) {
  }
}

static void mount_cgroups2(const char** controllers, int count)
{
  if (mkdir("/syzcgroup/unified", 0777)) {
    return;
  }
  if (mount("none", "/syzcgroup/unified", "cgroup2", 0, NULL)) {
    if (rmdir("/syzcgroup/unified") && errno != EBUSY)
      exit(1);
    return;
  }
  if (chmod("/syzcgroup/unified", 0777)) {
  }
  int control = open("/syzcgroup/unified/cgroup.subtree_control", O_WRONLY);
  if (control == -1)
    return;
  int i;
  for (i = 0; i < count; i++)
    if (write(control, controllers[i], strlen(controllers[i])) < 0) {
    }
  close(control);
}

static void setup_cgroups()
{
  const char* unified_controllers[] = {"+cpu", "+io", "+pids"};
  const char* net_controllers[] = {"net", "net_prio", "devices", "blkio",
                                   "freezer"};
  const char* cpu_controllers[] = {"cpuset", "cpuacct", "hugetlb", "rlimit",
                                   "memory"};
  if (mkdir("/syzcgroup", 0777)) {
    return;
  }
  mount_cgroups2(unified_controllers,
                 sizeof(unified_controllers) / sizeof(unified_controllers[0]));
  mount_cgroups("/syzcgroup/net", net_controllers,
                sizeof(net_controllers) / sizeof(net_controllers[0]));
  mount_cgroups("/syzcgroup/cpu", cpu_controllers,
                sizeof(cpu_controllers) / sizeof(cpu_controllers[0]));
  write_file("/syzcgroup/cpu/cgroup.clone_children", "1");
  write_file("/syzcgroup/cpu/cpuset.memory_pressure_enabled", "1");
}

static void setup_cgroups_loop()
{
  int pid = getpid();
  char file[128];
  char cgroupdir[64];
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/unified/syz%llu", procid);
  if (mkdir(cgroupdir, 0777)) {
  }
  snprintf(file, sizeof(file), "%s/pids.max", cgroupdir);
  write_file(file, "32");
  snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir);
  write_file(file, "%d", pid);
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/cpu/syz%llu", procid);
  if (mkdir(cgroupdir, 0777)) {
  }
  snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir);
  write_file(file, "%d", pid);
  snprintf(file, sizeof(file), "%s/memory.soft_limit_in_bytes", cgroupdir);
  write_file(file, "%d", 299 << 20);
  snprintf(file, sizeof(file), "%s/memory.limit_in_bytes", cgroupdir);
  write_file(file, "%d", 300 << 20);
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/net/syz%llu", procid);
  if (mkdir(cgroupdir, 0777)) {
  }
  snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir);
  write_file(file, "%d", pid);
}

static void setup_cgroups_test()
{
  char cgroupdir[64];
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/unified/syz%llu", procid);
  if (symlink(cgroupdir, "./cgroup")) {
  }
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/cpu/syz%llu", procid);
  if (symlink(cgroupdir, "./cgroup.cpu")) {
  }
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/net/syz%llu", procid);
  if (symlink(cgroupdir, "./cgroup.net")) {
  }
}

static void setup_common()
{
  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)) {
  }
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setsid();
  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);
  setup_common();
  initialize_vhci();
  sandbox_common();
  drop_caps();
  if (unshare(CLONE_NEWNET)) {
  }
  write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535");
  initialize_tun();
  initialize_wifi_devices();
  setup_binderfs();
  loop();
  exit(1);
}

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  int iter = 0;
  DIR* dp = 0;
retry:
  while (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW) == 0) {
  }
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exit(1);
    }
    exit(1);
  }
  struct dirent* ep = 0;
  while ((ep = readdir(dp))) {
    if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
      continue;
    char filename[FILENAME_MAX];
    snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
    while (umount2(filename, MNT_DETACH | UMOUNT_NOFOLLOW) == 0) {
    }
    struct stat st;
    if (lstat(filename, &st))
      exit(1);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      if (unlink(filename) == 0)
        break;
      if (errno == EPERM) {
        int fd = open(filename, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno != EBUSY || i > 100)
        exit(1);
      if (umount2(filename, MNT_DETACH | UMOUNT_NOFOLLOW))
        exit(1);
    }
  }
  closedir(dp);
  for (int i = 0;; i++) {
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EPERM) {
        int fd = open(dir, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno == EBUSY) {
        if (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW))
          exit(1);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exit(1);
  }
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  for (int i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

static void setup_loop()
{
  setup_cgroups_loop();
  checkpoint_net_namespace();
}

static void reset_loop()
{
  char buf[64];
  snprintf(buf, sizeof(buf), "/dev/loop%llu", procid);
  int loopfd = open(buf, O_RDWR);
  if (loopfd != -1) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
  reset_net_namespace();
}

static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  setup_cgroups_test();
  write_file("/proc/self/oom_score_adj", "1000");
  flush_tun();
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

static void close_fds()
{
  for (int fd = 3; fd < MAX_FDS; fd++)
    close(fd);
}

static void setup_binfmt_misc()
{
  if (mount(0, "/proc/sys/fs/binfmt_misc", "binfmt_misc", 0, 0)) {
  }
  write_file("/proc/sys/fs/binfmt_misc/register", ":syz0:M:0:\x01::./file0:");
  write_file("/proc/sys/fs/binfmt_misc/register",
             ":syz1:M:1:\x02::./file0:POC");
}

static void setup_usb()
{
  if (chmod("/dev/raw-gadget", 0666))
    exit(1);
}

static void setup_sysctl()
{
  char mypid[32];
  snprintf(mypid, sizeof(mypid), "%d", getpid());
  struct {
    const char* name;
    const char* data;
  } files[] = {
      {"/sys/kernel/debug/x86/nmi_longest_ns", "10000000000"},
      {"/proc/sys/kernel/hung_task_check_interval_secs", "20"},
      {"/proc/sys/net/core/bpf_jit_kallsyms", "1"},
      {"/proc/sys/net/core/bpf_jit_harden", "0"},
      {"/proc/sys/kernel/kptr_restrict", "0"},
      {"/proc/sys/kernel/softlockup_all_cpu_backtrace", "1"},
      {"/proc/sys/fs/mount-max", "100"},
      {"/proc/sys/vm/oom_dump_tasks", "0"},
      {"/proc/sys/debug/exception-trace", "0"},
      {"/proc/sys/kernel/printk", "7 4 1 3"},
      {"/proc/sys/kernel/keys/gc_delay", "1"},
      {"/proc/sys/vm/oom_kill_allocating_task", "1"},
      {"/proc/sys/kernel/ctrl-alt-del", "0"},
      {"/proc/sys/kernel/cad_pid", mypid},
  };
  for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
    if (!write_file(files[i].name, files[i].data))
      printf("write to %s failed: %s\n", files[i].name, strerror(errno));
  }
}

struct thread_t {
  int created, call;
  event_t ready, done;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    event_wait(&th->ready);
    event_reset(&th->ready);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    event_set(&th->done);
  }
  return 0;
}

static void execute_one(void)
{
  int i, call, thread;
  for (call = 0; call < 3; call++) {
    for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
         thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        event_init(&th->ready);
        event_init(&th->done);
        event_set(&th->done);
        thread_start(thr, th);
      }
      if (!event_isset(&th->done))
        continue;
      event_reset(&th->done);
      th->call = call;
      __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
      event_set(&th->ready);
      if (call == 0)
        break;
      event_timedwait(&th->done, 50 + (call == 0 ? 4000 : 0));
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
  close_fds();
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  setup_loop();
  int iter = 0;
  for (;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      exit(1);
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      if (chdir(cwdbuf))
        exit(1);
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    NONFAILING(memcpy((void*)0x20000200, "exfat\000", 6));
    NONFAILING(memcpy((void*)0x200000c0, "./file1\000", 8));
    NONFAILING(memcpy(
        (void*)0x20000280,
        "\x64\x69\x73\x63\x61\x72\x64\x2c\x69\x6f\x63\x68\x61\x72\x73\x65\x74"
        "\x3d\x63\x70\x38\x36\x35\x2c\x6e\x61\x6d\x65\x63\x61\x73\x65\x3d\x31"
        "\x2c\x75\x74\x66\x38\x2c\x65\x72\x72\x6f\x72\x73\x3d\x63\x6f\x6e\x74"
        "\x69\x6e\x75\x65\x2c\x75\x6d\x61\x73\x6b\x3d\x30\x30\x30\x30\x30\x30"
        "\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x33"
        "\x2c\x64\x6d\x61\x73\x6b\x3d\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30"
        "\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x32\x2c\x66\x6d\x61"
        "\x73\x6b\x3d\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30"
        "\x30\x30\x30\x30\x30\x30\x30\x30\x33\x2c\x75\x74\x66\x38\x2c\x75\x74"
        "\x66\x38\x2c\x69\x6f\x63\x68\x61\x72\x73\x65\x74\x3d\x63\x70\x37\x37"
        "\x35\x2c\x00\xa9\xd8\x6f\x71\x8a\xe5\xf0\x99\x5c\x2b\x7f\xfb\xac\xa5"
        "\x92\xd4\x74\x7b\xec\x34\x71\xdc\xab\x65\x45\x3a\x1d\xd8\x4f\x8a\xd2"
        "\x09\xf2\xdc\x3f\xb7\x40\x37\x26\x8b\x57\x44\x91\xa5\x5c\xaa\x55\x96"
        "\xce\x47\xc8\xf0\xb0\x1a\xff\x6e",
        229));
    NONFAILING(memcpy(
        (void*)0x20001880,
        "\x78\x9c\xec\xdc\x0b\x9c\x8e\xd5\x1a\x28\xf0\xf5\xac\xb5\xde\x31\xa6"
        "\x49\x5f\x93\x5c\x86\xf5\xac\xe7\xe5\x4b\x83\x65\x92\x24\x97\x24\xb9"
        "\x24\x49\x92\x24\x09\x09\x49\x93\x6c\x49\x48\x0c\x21\x49\x43\x12\x72"
        "\x9d\x24\x97\x21\x34\xb9\x4c\x4c\x1a\xf7\xfb\x25\xf7\xa4\xc9\x96\x24"
        "\x49\x6e\xb9\x85\x75\x7e\xda\xed\x63\xef\xdd\xde\xdb\x3e\x67\x77\x8e"
        "\xf3\x3b\xf3\xfc\x7f\xbf\xf5\x9b\xf5\xcc\xfb\x3d\xcf\xb7\xd6\x3c\x33"
        "\xf3\xbd\xef\x37\xbf\x79\x7f\xe8\x36\xac\x4e\xb3\xba\x35\x9b\x10\x91"
        "\xf8\xaf\xc0\x5f\x3e\xa4\x0a\x21\x62\x85\x10\x83\x84\x10\xd7\x09\x21"
        "\x02\x21\x44\xc5\x84\x8a\x09\x97\x8e\xe7\x57\x90\xfa\xdf\x3d\x09\xfb"
        "\x63\x3d\x92\x71\xb5\x57\xc0\xae\x26\xee\x7f\xde\xc6\xfd\xcf\xdb\xb8"
        "\xff\x79\x1b\xf7\x3f\x6f\xe3\xfe\xe7\x6d\xdc\xff\xff\xcf\x65\x7a\xef"
        "\xff\xcd\x61\xee\x7f\xde\xc6\xfd\x67\x2c\x2f\xdb\x3c\xa3\xe8\xf5\x3c"
        "\xf2\xee\xe0\xf7\xff\xf3\x32\x7e\xfd\xcf\xdb\xb8\xff\x79\x1b\xf7\x3f"
        "\x6f\xe3\xfe\xe7\x6d\xdc\xff\xbc\x8d\xfb\x9f\xb7\x71\xff\xf3\x1e\xf5"
        "\x37\x73\xee\x7f\xde\xc6\xfd\x67\x2c\x2f\xbb\xda\xef\x3f\xf3\xb8\xba"
        "\xe3\x6a\x7f\xff\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18"
        "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c"
        "\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6"
        "\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63"
        "\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31"
        "\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18"
        "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c"
        "\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\xcb\x1b\xce\xf8"
        "\xcb\xb4\x10\xe2\xaf\xf3\xab\xbd\x2e\xc6\x18\x63\x8c\x31\xc6\x18\x63"
        "\x8c\xfd\x71\x7c\xbe\xab\xbd\x02\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c"
        "\xfd\x9f\x07\x42\x0a\x25\xb4\x08\x44\x8c\xc8\x27\x62\x45\x7e\x11\x27"
        "\xae\x11\xf1\xe2\x5a\x51\x40\x5c\x27\x22\xe2\x7a\x91\x20\x6e\x10\x05"
        "\xc5\x8d\xae\xd5\x6f\x19\x89\xa2\x98\x28\x2e\x8c\x40\x61\x05\x89\x50"
        "\x94\x10\x25\x45\x54\xdc\x24\x4a\x89\x9b\x45\x92\x28\x2d\xca\x88\xb2"
        "\xc2\x89\x72\x22\x59\xdc\x22\xca\x8b\x5b\x45\x05\x71\x9b\xa8\x28\x6e"
        "\x17\x95\xc4\x1d\xa2\xb2\xa8\x22\xaa\x8a\x6a\xe2\x4e\x51\x5d\xdc\x25"
        "\x6a\x88\xbb\x45\x4d\x71\x8f\xa8\x25\x6a\x8b\x3a\xa2\xae\xb8\x57\xd4"
        "\x13\xf7\x89\xfa\xe2\x7e\xd1\x40\x3c\x20\x1a\x8a\x07\x45\x23\xf1\x90"
        "\x68\x2c\x1e\x16\x4d\xc4\x23\xa2\xa9\x78\x54\x34\x13\x8f\x89\xe6\xe2"
        "\x71\xd1\x42\x3c\x21\x5a\x8a\x56\xa2\xf5\xff\x56\xfe\xcb\xa2\x97\x78"
        "\x45\xf4\x16\x7d\x44\xaa\xe8\x2b\xfa\x89\x57\x45\x7f\xef\x7d\x9f\x5f"
        "\x77\xf7\xba\x18\x2c\xde\x10\x43\xc4\x9b\x22\x4d\x0c\x15\xc3\xc4\x5b"
        "\x62\xb8\x78\x5b\x8c\x10\xef\x88\x91\x62\x94\x18\x2d\xde\x15\x63\xc4"
        "\x58\x31\x4e\x8c\x17\x13\xc4\x44\x91\x2e\xde\x13\x93\xc4\xfb\x62\xb2"
        "\xf8\x40\x4c\x11\x53\xc5\x34\x31\x5d\x64\x88\x19\x62\xa6\xf8\x50\xcc"
        "\x12\xb3\xc5\x1c\xf1\x91\xc8\x14\x1f\x8b\xb9\x62\x9e\x98\x2f\x16\x88"
        "\x2c\xf1\x89\x58\x28\x16\x89\x6c\xf1\xa9\x58\x2c\x3e\x13\x39\x62\x89"
        "\x58\x2a\x96\x89\xe5\x62\x85\x58\x29\x56\x89\xd5\x62\x8d\x58\x2b\xd6"
        "\x89\xf5\x62\x83\xd8\x28\x36\x89\xcd\xe2\x73\xb1\x45\x6c\x15\xdb\xc4"
        "\x76\xb1\x43\xec\x14\xbb\xc4\x17\x62\xb7\xf8\x52\xec\x11\x5f\x89\x5c"
        "\xf1\xf5\xff\x62\xfe\xe9\x7f\xc8\xef\x0e\x02\x04\x48\x90\xa0\x41\x43"
        "\x0c\xc4\x40\x2c\xc4\x42\x1c\xc4\x41\x3c\xc4\x43\x01\x28\x00\x11\x88"
        "\x40\x02\x24\x40\x41\x28\x08\x85\xa0\x10\x14\x81\x22\x90\x08\x89\x50"
        "\x1c\x8a\x03\x02\x02\x01\x41\x09\x28\x01\x51\x88\x42\x29\x28\x05\x49"
        "\x90\x04\x65\xa0\x0c\x38\x70\x90\x0c\xc9\x50\x1e\x6e\x85\x0a\x50\x01"
        "\x2a\x42\x45\xa8\x04\x95\xa0\x32\x54\x81\x2a\x50\x0d\xaa\x41\x75\xa8"
        "\x0e\x35\xa0\x06\xd4\x84\x9a\x50\x0b\x6a\x41\x1d\xa8\x03\xf7\xc2\xbd"
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        "\xca\xaf\xe2\xd4\x35\x2a\x5e\x5d\xab\x0a\xa8\xeb\x54\x44\x5d\xaf\x12"
        "\xd4\x0d\xaa\xa0\xba\x51\x15\x52\x85\x55\x11\x55\x54\x25\xaa\x62\xaa"
        "\xb8\x32\x0a\x95\x55\xa4\x42\x55\x42\x95\x54\x51\x75\x93\x2a\xa5\x6e"
        "\x56\x49\xaa\xb4\x2a\xa3\xca\x2a\xa7\xca\xa9\x64\x75\x8b\x2a\xaf\x6e"
        "\x55\x15\xd4\x6d\xaa\xa2\xba\x5d\x55\x52\x77\xa8\xca\xaa\x8a\xaa\xaa"
        "\xaa\xa9\x3b\x55\x75\x75\x97\xaa\xa1\xee\x56\x35\xd5\x3d\xaa\x96\xaa"
        "\xad\xea\xa8\xba\xea\x5e\x55\x4f\xdd\xa7\xea\xab\xfb\x55\x03\xf5\x80"
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        "\xa9\xb7\xd4\x70\xf5\xb6\x1a\xa1\xde\x51\x23\xd5\x28\x35\x5a\xbd\xab"
        "\xc6\xa8\xb1\x6a\x9c\x1a\xaf\x26\xa8\x89\x2a\x5d\xbd\xa7\x26\xa9\xf7"
        "\xd5\x64\xf5\x81\x9a\xa2\xa6\xaa\x69\x6a\xba\xca\x50\x33\xd4\xc0\xdf"
        "\x2a\xcd\xf9\x0f\xf2\xdf\xff\x27\xf9\x43\x7e\x7d\xf6\x4d\x6a\xb3\xfa"
        "\x5c\x6d\x51\x5b\xd5\x36\xb5\x5d\xed\x50\x3b\xd5\x2e\xb5\x4b\xed\x56"
        "\xbb\xd5\x1e\xb5\x47\xe5\xaa\x5c\xb5\x57\xed\x55\xfb\xd4\x3e\xb5\x5f"
        "\xed\x57\x07\xd4\x01\x75\x50\x1d\x54\x87\xd4\x21\x75\x58\x1d\x56\x47"
        "\xd4\x11\x75\x54\x1d\x53\x67\xd5\x09\x75\x52\xfd\xac\x4e\xa9\xd3\xea"
        "\xb4\x3a\xab\xce\xa9\x73\xea\xfc\x6f\x5f\x03\xa1\x41\x4b\xad\xb4\xd6"
        "\x81\x8e\xd1\xf9\x74\xac\xce\xaf\xe3\xf4\x35\x3a\x5e\x5f\xab\x0b\xe8"
        "\xeb\x74\x44\x5f\xaf\x13\xf4\x0d\xba\xa0\xbe\x51\x17\xd2\x85\x75\x11"
        "\x5d\x54\x27\xea\x62\xba\xb8\x36\x1a\xb5\xd5\xa4\x43\x5d\x42\x97\xd4"
        "\x51\x7d\x93\x2e\xa5\x6f\xd6\x49\xba\xb4\x2e\xa3\xcb\x6a\xa7\xcb\xe9"
        "\x64\x7d\xcb\x7f\x9d\x7f\xa5\xf5\xb5\xd6\xad\x75\x1b\xdd\x46\xb7\xd5"
        "\x6d\x75\x7b\xdd\x5e\x77\xd0\x1d\x74\x47\xdd\x51\xa7\xe8\x14\xdd\x49"
        "\x77\xd2\x9d\x75\x67\xdd\x45\x77\xd1\x5d\x75\x57\xdd\x4d\x77\xd3\xdd"
        "\x75\x77\xdd\x53\xf7\xd4\xbd\x74\x2f\xdd\x5b\xf7\xd6\xa9\x3a\x55\xf7"
        "\xd3\xaf\xea\xfe\x7a\x80\x1e\xa8\x5f\xd3\x83\xf4\xeb\x7a\xb0\x1e\xac"
        "\x87\xe8\x21\x3a\x4d\xa7\xe9\x61\x7a\x98\x1e\xae\x87\xeb\x11\x7a\x84"
        "\x1e\xa9\x47\xea\xd1\x7a\xb4\x1e\xa3\xc7\xe8\x71\x7a\x9c\x9e\xa0\x27"
        "\xe8\x74\x9d\xae\x27\xe9\x49\x7a\xb2\x9e\xac\xa7\xe8\x29\x7a\x9a\x9e"
        "\xa6\x33\x74\x86\x9e\xa9\x67\xea\x59\x7a\x96\x9e\xa3\xe7\xe8\x4c\x9d"
        "\xa9\xe7\xea\xb9\x7a\xbe\x9e\xaf\xb3\x74\x96\x5e\xa8\x17\xea\x6c\x9d"
        "\xad\x17\xeb\xc5\x3a\x47\x2f\xd1\x4b\xf4\x32\xbd\x4c\xaf\xd0\x2b\xf4"
        "\x2a\xbd\x4a\xaf\xd1\x6b\xf4\x3a\xbd\x4e\x6f\xd0\x1b\x74\x8e\xde\xac"
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        "\x7a\xb7\xde\xa3\xf7\xe8\x5c\x9d\xab\xf7\xea\xbd\x7a\x9f\xde\xa7\xf7"
        "\xeb\xfd\xfa\x80\x3e\xa0\x0f\xea\x83\xfa\x90\x3e\xa4\x0f\xeb\xc3\xfa"
        "\x88\x3e\xa2\x8f\xea\xa3\xfa\xb8\x3e\xae\x4f\xea\x93\xfa\x94\x3e\xa5"
        "\xcf\xe8\x33\xfa\x9c\x3e\xa7\xcf\xeb\xf3\xfa\xa2\xbe\x78\xe9\xb4\x2f"
        "\x90\x81\x0c\x74\xa0\x83\x98\x20\x26\x88\x0d\x62\x83\xb8\x20\x2e\x88"
        "\x0f\xe2\x83\x02\x41\x81\x20\x12\x44\x82\x84\x20\x21\x28\x18\xdc\x18"
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        "\x50\x10\x06\x25\x82\x92\x41\x34\xb8\x29\x28\x15\xdc\x1c\x24\x05\xa5"
        "\x83\x32\x41\xd9\xc0\x05\xe5\x82\xe4\xe0\x96\xa0\x7c\x70\x6b\x50\x21"
        "\xb8\x2d\xa8\x18\xdc\x1e\x54\x0a\xee\x08\x2a\x07\x55\x82\xaa\x41\xb5"
        "\xe0\xce\xa0\x7a\x70\x57\x50\x23\xb8\x3b\xa8\x19\xdc\x13\xd4\x0a\x6a"
        "\x07\x75\x82\xba\xc1\xbd\x41\xbd\xe0\xbe\xa0\x7e\x70\x7f\xd0\x20\x78"
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        "\xa6\xc1\xa3\x41\xb3\xe0\xb1\xa0\x79\xf0\x78\xd0\x22\x78\x22\x68\x19"
        "\xb4\x0a\x5a\xff\xe7\xf5\x7d\xbe\x2b\xd6\xf7\xfe\x54\xe1\xa7\x5c\x6f"
        "\xd3\xc7\xa4\x9a\xbe\xa6\x9f\x79\xd5\xf4\x37\x03\xcc\x40\xf3\x9a\x19"
        "\x64\x5e\x37\x83\xcd\x1b\x66\x88\x79\xd3\xa4\x99\xa1\x66\x98\x79\xcb"
        "\x0c\x37\x6f\x9b\x11\xe6\x1d\x33\xd2\x8c\x32\xa3\xcd\xbb\x66\x8c\x19"
        "\x6b\xc6\x99\xf1\x66\x82\x99\x68\xd2\xcd\x7b\x66\x92\x79\xdf\x4c\x36"
        "\x1f\x98\x29\x66\xaa\x99\x66\xa6\x9b\x0c\x33\xc3\xcc\x34\x1f\x9a\x59"
        "\x66\xb6\x99\x63\x3e\x32\x99\xe6\x63\x33\xd7\xcc\x33\xf3\xcd\x02\x93"
        "\x65\x3e\x31\x0b\xcd\x22\x93\x6d\x3e\x35\x8b\xcd\x67\x26\xc7\x2c\x31"
        "\x4b\xcd\x32\xb3\xdc\xac\x30\x2b\xcd\x2a\xb3\xda\xac\x31\x6b\xcd\x3a"
        "\xb3\xde\x6c\x30\x1b\xcd\x26\xb3\xd9\x7f\x6e\xb6\x98\xad\x66\x9b\xd9"
        "\x6e\x76\x98\x9d\x66\x97\xf9\xc2\xec\x36\x5f\x9a\x3d\xe6\x2b\x93\x6b"
        "\xbe\x36\x7b\xcd\x9f\xcd\x3e\xf3\x8d\xd9\x6f\xbe\x35\x07\xcc\x77\xe6"
        "\xa0\xf9\xde\x1c\x32\x3f\x98\xc3\xe6\x47\x73\xc4\xfc\x64\x8e\x9a\x63"
        "\xe6\xb8\x39\x61\x4e\x9a\x9f\xcd\x29\x73\xda\x9c\x31\x67\xcd\x39\xf3"
        "\x8b\x39\x6f\x2e\x98\x8b\xc6\x5f\x3a\xb9\xbf\xf4\xf2\x8e\x1a\x35\xc6"
        "\x60\x0c\xc6\x62\x2c\xc6\x61\x1c\xc6\x63\x3c\x16\xc0\x02\x18\xc1\x08"
        "\x26\x60\x02\x16\xc4\x82\x58\x08\x0b\x61\x11\x2c\x82\x89\x98\x88\xc5"
        "\xb1\x38\x5e\x42\x48\x58\x02\x4b\x60\x14\xa3\x58\x0a\x4b\x61\x12\x26"
        "\x61\x19\x2c\x83\x0e\x1d\x26\x63\x32\x96\xc7\xf2\x58\x01\x2b\x60\x45"
        "\xac\x88\x95\xb0\x12\x56\xc6\x1a\xa2\x2a\x56\xc5\x3b\xf1\x4e\xbc\x0b"
        "\xef\xc2\xbb\xf1\x6e\xbc\x07\xef\xc1\xda\x58\x1b\xeb\x62\x5d\xac\x87"
        "\xf5\xb0\x3e\xd6\xc7\x06\xd8\x00\x1b\x62\x43\x6c\x84\x8d\xb0\x31\x09"
        "\x21\xb0\x09\x36\xc5\xa6\xd8\x0c\x9b\x61\x73\x6c\x8e\x2d\xb0\x05\xb6"
        "\xc4\x96\xd8\x1a\x5b\x63\x1b\x6c\x83\x6d\xb1\x2d\xb6\xc7\xf6\xd8\x01"
        "\x3b\x60\x47\xec\x88\x29\x98\x82\x9d\xb0\x13\x76\xc6\xce\xd8\x05\xbb"
        "\x60\x57\xec\x8a\xdd\xb0\x1b\x76\xc7\xee\xd8\x13\x7b\x62\x2f\xec\x85"
        "\xbd\xb1\x37\xa6\x62\x2a\xf6\xc3\x7e\xd8\x1f\xfb\xe3\x40\x1c\x88\x83"
        "\x70\x10\x0e\xc6\xc1\x38\x04\x87\x60\x1a\xa6\xe1\x30\x1c\x86\xc3\x71"
        "\x38\x8e\xc0\x11\x38\x12\x47\xe1\x68\x7c\x17\xc7\xe0\x58\x1c\x87\xe3"
        "\x71\x02\x4e\xc4\x74\x4c\xc7\x49\x38\x09\x27\xe3\x64\x9c\x82\x53\x70"
        "\x1a\x4e\xc3\x0c\xcc\xc0\x99\x38\x13\x67\xe1\x2c\x9c\x83\x73\x30\x13"
        "\x33\x71\x2e\xce\xc5\xf9\x38\x1f\xb3\x30\x0b\x17\xe2\x42\xcc\xc6\x6c"
        "\x5c\x8c\x8b\x31\x07\x73\x70\x29\x2e\xc5\xe5\xb8\x1c\x57\xe2\x4a\x5c"
        "\x8d\xab\x71\x2d\xae\xc5\xf5\xb8\x1e\x37\xe2\x46\xdc\x8c\x9b\x71\x0b"
        "\x6e\xc1\x6d\xb8\x0d\x77\xe0\x0e\xdc\x85\xbb\x70\x37\xee\xc6\x3d\xb8"
        "\x07\x73\x31\x17\xf7\xe2\x5e\xdc\x87\xfb\x70\x3f\xee\xc7\x03\x78\x00"
        "\x0f\xe2\x41\x3c\x84\x87\xf0\x30\x1e\xc6\x23\x78\x04\x8f\xe2\x51\x3c"
        "\x8e\xc7\xf1\x24\x9e\xc4\x53\x78\x0a\xcf\xe0\x19\x3c\x87\xbf\xe0\x79"
        "\xbc\x80\x17\xd1\x63\xac\xcd\x6f\xe3\xec\x35\x36\xde\x5e\x6b\x0b\xd8"
        "\xeb\xec\x3f\xc6\x45\x6c\x51\x9b\x68\x8b\xd9\xe2\xd6\xd8\x42\xb6\xf0"
        "\xdf\xc5\x68\xad\x4d\xb2\xa5\x6d\x19\x5b\xd6\x3a\x5b\xce\x26\xdb\x5b"
        "\x7e\x17\x57\xb6\x55\x6c\x55\x5b\xcd\xde\x69\xab\xdb\xbb\x6c\x0d\x0b"
        "\x42\x88\xbf\x8d\xeb\xd9\xfb\x6c\x7d\x7b\xbf\x6d\x60\x1f\xb0\x75\xed"
        "\xbd\x7f\x17\x37\xb4\x0f\xda\x46\xf6\x31\xdb\xd8\x3e\x6e\x9b\x14\xaf"
        "\xdd\xfe\x05\xdb\xca\x36\xb3\x8f\xd9\xe6\xf6\x71\xdb\xc2\x3e\x61\x5b"
        "\xda\x56\xb6\x83\x7d\xc6\x76\xb4\xcf\xda\x14\xfb\x9c\xed\x64\x9f\xff"
        "\x5d\xbc\xd0\x2e\xb2\xab\xed\x1a\xbb\xd6\xae\xb3\xbb\xed\x97\xf6\x8c"
        "\x3d\x6b\x0f\xd9\x1f\xec\x39\xfb\x8b\xed\x6d\xfb\xd8\x41\xf6\x75\x3b"
        "\xd8\xbe\x61\x87\xd8\x37\x6d\x9a\x1d\xfa\xbb\x78\xb4\x7d\xd7\x8e\xb1"
        "\x63\xed\x38\x3b\xde\x4e\xb0\x13\x7f\x17\x4f\xb3\xd3\x6d\x86\x9d\x61"
        "\x67\xda\x0f\xed\x2c\x3b\xfb\x77\x71\x96\xfd\xc4\x66\xda\x6c\x3b\xd7"
        "\xce\xb3\xf3\xed\x82\x5f\xe3\x4b\x6b\xca\xb6\x9f\xda\xc5\xf6\x33\x9b"
        "\x63\x97\xd8\xa5\x76\x99\x5d\x6e\x57\xd8\x95\x76\xd5\xff\x5c\xeb\x32"
        "\xbb\xc1\x6e\xb4\x9b\xec\x2e\xfb\x85\xdd\x62\xb7\xda\x6d\x76\xbb\xdd"
        "\x61\x77\xfe\x1a\x5f\xda\xc7\x1e\xfb\x95\xcd\xb5\x5f\xdb\x83\xf6\x7b"
        "\xbb\xcf\x7e\x63\xf7\xdb\xc3\xf6\x80\xfd\xee\xd7\xf8\xd2\xfe\x0e\xdb"
        "\x1f\xed\x11\xfb\x93\x3d\x6a\x8f\xd9\xe3\xf6\x84\x3d\x69\x7f\xb6\xa7"
        "\xec\xe9\x5f\xf7\x7f\x69\xef\x27\xec\x05\x7b\xd1\x7a\x2b\x08\x48\x92"
        "\x22\x4d\x01\xc5\x50\x3e\x8a\xa5\xfc\x14\x47\xd7\x50\x3c\x5d\x4b\x05"
        "\xe8\x3a\x8a\xd0\xf5\x94\x40\x37\x50\x41\xba\x91\x0a\x51\x61\x2a\x42"
        "\x45\x29\x91\x8a\x51\x71\x32\x84\x64\x89\x28\xa4\x12\x54\x92\xa2\x74"
        "\x13\x95\xa2\x9b\x29\x89\x4a\x53\x19\x2a\x4b\x8e\xca\x51\x32\xdd\x42"
        "\xe5\xe9\x56\xaa\x40\xb7\x51\x45\xba\x9d\x2a\xd1\x1d\x54\x99\xaa\x50"
        "\x55\xaa\x46\x77\x52\x75\x92\xa2\x06\xdd\x4d\x35\xe9\x1e\xaa\x45\xb5"
        "\xa9\x0e\xd5\xa5\x7b\xa9\x1e\xdd\x47\xf5\xe9\x7e\x6a\x40\x0f\x50\x43"
        "\x7a\x90\x1a\xd1\x43\xd4\x98\x1e\xa6\x26\xf4\x08\x35\xa5\x47\xa9\x19"
        "\x3d\x46\xcd\xe9\x71\x6a\x41\x4f\x50\x4b\x6a\x45\xad\xe9\x49\x6a\x43"
        "\x4f\x51\x5b\x6a\x47\xed\xe9\x69\xea\x40\xcf\x50\x47\x7a\x96\x52\xe8"
        "\x39\xea\x44\xcf\x53\x67\xfa\x13\x75\xa1\x17\xa8\x2b\xbd\x48\xdd\xe8"
        "\x25\xea\x4e\x3d\xa8\x27\xbd\x4c\xbd\xe8\x15\xea\x4d\x7d\x28\x95\xfa"
        "\x52\x3f\x7a\x95\xfa\xd3\x00\x1a\x48\xaf\xd1\x20\x7a\x9d\x06\xd3\x1b"
        "\x34\x84\xde\xa4\x34\x1a\x4a\xc3\xe8\x2d\x1a\x4e\x6f\xd3\x08\x7a\x87"
        "\x46\xd2\x28\x1a\x4d\xef\xd2\x18\x1a\x4b\xe3\x68\x3c\x4d\xa0\x89\x94"
        "\x4e\xef\xd1\x24\x7a\x9f\x26\xd3\x07\x34\x85\xa6\xd2\x34\x9a\x4e\x19"
        "\x34\x83\x66\xd2\x87\x34\x8b\x66\xd3\x1c\xfa\x88\x32\xe9\x63\x9a\x4b"
        "\xf3\x68\x3e\x2d\xa0\x2c\xfa\x84\x16\xd2\x22\xca\xa6\x4f\x69\x31\x7d"
        "\x46\x39\xb4\x84\x96\xd2\x32\x5a\x4e\x2b\x68\x25\xad\xa2\xd5\xb4\x86"
        "\xd6\xd2\x3a\x5a\x4f\x1b\x68\x23\x6d\xa2\xcd\xf4\x39\x6d\xa1\xad\xb4"
        "\x8d\xb6\xd3\x0e\xda\x49\xbb\xe8\x0b\xda\x4d\x5f\xd2\x1e\xfa\x8a\x72"
        "\xe9\x6b\xda\x4b\x7f\xa6\x7d\xf4\x0d\xed\xa7\x6f\xe9\x00\x7d\x47\x07"
        "\xe9\x7b\x3a\x44\x3f\xd0\x61\xfa\x91\x8e\xd0\x4f\x74\x94\x8e\xd1\x71"
        "\x3a\x41\x27\xe9\x67\x3a\x45\xa7\xe9\x0c\x9d\xa5\x73\xf4\x0b\x9d\xa7"
        "\x0b\x74\x91\x3c\x89\x10\x42\x19\xaa\x50\x87\x41\x18\x13\xe6\x0b\x63"
        "\xc3\xfc\x61\x5c\x78\x4d\x18\x1f\x5e\x1b\x16\x08\xaf\x0b\x23\xe1\xf5"
        "\x61\x42\x78\x43\x58\x30\xbc\x31\x2c\x14\x16\x0e\x8b\x84\x45\xc3\xc4"
        "\xb0\x58\x58\x3c\x34\x21\x86\x36\xa4\x30\x0c\x4b\x84\x25\xc3\x68\x78"
        "\x53\x58\x2a\xbc\x39\x4c\x0a\x4b\x87\x65\xc2\xb2\xa1\x0b\xcb\x85\xc9"
        "\xe1\x2d\x61\xf9\xf0\xd6\xb0\x42\x78\x5b\x58\x31\xbc\x3d\xac\x14\xde"
        "\x11\x56\x0e\xab\x84\x8f\x3d\x50\x2d\xbc\x33\xac\x1e\xde\x15\xd6\x08"
        "\xef\x0e\x6b\x86\xf7\x84\xb5\xc2\xda\x61\x9d\xb0\x6e\x78\x6f\x58\x2f"
        "\xbc\x2f\xac\x1f\xde\x1f\x36\x08\x1f\x08\x2b\x84\x0f\x86\x8d\xc2\x87"
        "\xc2\xc6\xe1\xc3\x61\x93\xf0\x91\xb0\x69\xf8\x68\xd8\x2c\x7c\x2c\x6c"
        "\x1e\x3e\x1e\xb6\x08\x9f\x08\x5b\x86\xad\xc2\xd6\xe1\x93\x61\x9b\xf0"
        "\xa9\xb0\x6d\xd8\x2e\x6c\x1f\x3e\x1d\x76\x08\x9f\x09\x3b\x86\xcf\x86"
        "\x29\xe1\x73\x61\xa7\xf0\xf9\x2b\x1e\x4f\x0d\xfb\x86\xfd\xc2\x57\xc3"
        "\x57\x43\xef\xef\x57\xf3\xa3\x0b\xa2\x59\xd1\x4f\xa2\x0b\xa3\x8b\xa2"
        "\xd9\xd1\x4f\xa3\x8b\xa3\x9f\x45\x73\xa2\x4b\xa2\x4b\xa3\xcb\xa2\xcb"
        "\xa3\x2b\xa2\x2b\xa3\xab\xa2\xab\xa3\x6b\xa2\x6b\xa3\xeb\xa2\xeb\xa3"
        "\x1b\xa2\x1b\xa3\x9b\xa2\xde\xd7\xcd\x27\x1c\x38\xe9\x94\xd3\x2e\x70"
        "\x31\x2e\x9f\x8b\x75\xf9\x5d\x9c\xbb\xc6\xc5\xbb\x6b\x5d\x01\x77\x9d"
        "\x8b\xb8\xeb\x5d\x82\xbb\xc1\x15\x74\x37\xba\x42\xae\xb0\x2b\xe2\x8a"
        "\xba\x44\x57\xcc\x15\x77\xc6\xa1\xb3\x8e\x5c\xe8\x4a\xb8\x92\x2e\xea"
        "\x6e\x72\xa5\xdc\xcd\x2e\xc9\x95\x76\x65\x5c\x59\xe7\x5c\x39\x97\xec"
        "\x5a\xb9\xd6\xae\xb5\x6b\xe3\x9e\x72\x6d\x5d\x3b\xd7\xde\x3d\xed\x9e"
        "\x76\xcf\xb8\x67\xdc\xb3\xee\x59\xf7\x9c\xeb\xe4\x9e\x77\x9d\xdd\x9f"
        "\x5c\x17\xf7\x82\xeb\xea\x5e\x74\x2f\xba\x97\x5c\x77\xd7\xc3\xf5\x74"
        "\x2f\xbb\x5e\xee\x15\xd7\xdb\xf5\x71\xa9\x2e\xd5\xf5\x73\xfd\x5c\x7f"
        "\xd7\xdf\x0d\x74\x03\xdd\x20\x37\xc8\x0d\x76\x83\xdd\x10\x37\xc4\xa5"
        "\xb9\x34\x37\xcc\x0d\x73\xc3\xdd\x70\x37\xc2\x8d\x70\x23\xdd\x48\x37"
        "\xda\x8d\x76\x63\xdc\x18\x37\xce\x8d\x73\x13\xdc\x04\x97\xee\xd2\xdd"
        "\x24\x37\xc9\x4d\x76\x93\xdd\x14\x37\xc5\x4d\x73\xd3\x5c\x86\xcb\x70"
        "\x33\xdd\x4c\x37\xcb\xcd\x72\x73\xdc\x1c\x97\x99\x94\xe9\xe6\xba\xb9"
        "\x6e\xbe\x9b\xef\xb2\x5c\x96\x5b\xe8\x16\xba\x6c\x97\xed\x16\xbb\xc5"
        "\x2e\xc7\xe5\xb8\xa5\x6e\xa9\x5b\xee\x96\xbb\x95\x6e\xa5\x5b\xed\x56"
        "\xbb\xb5\x6e\xad\x5b\xef\xd6\xbb\x8d\x6e\xa3\xdb\xec\x36\xbb\x2d\x6e"
        "\x8b\xdb\xe6\xb6\xb9\x1d\x6e\x87\xdb\xe5\x76\xb9\xdd\x6e\xb7\xdb\xe3"
        "\xf6\xb8\x5c\x97\xeb\xf6\xba\xbd\x6e\x9f\xdb\xe7\xf6\xbb\x6f\xdd\x01"
        "\xf7\x9d\x3b\xe8\xbe\x77\x87\xdc\x0f\xee\xb0\xfb\xd1\x1d\x71\x3f\xb9"
        "\xa3\xee\x98\x3b\xee\x4e\xb8\x93\xee\x67\x77\xca\x9d\x76\x67\xdc\x59"
        "\x77\xce\xfd\xe2\xce\xbb\x0b\xee\xa2\xf3\x2e\x3d\xf2\x5e\x64\x52\xe4"
        "\xfd\xc8\xe4\xc8\x07\x91\x29\x91\xa9\x91\x69\x91\xe9\x91\x8c\xc8\x8c"
        "\xc8\xcc\xc8\x87\x91\x59\x91\xd9\x91\x39\x91\x8f\x22\x99\x91\x8f\x23"
        "\x73\x23\xf3\x22\xf3\x23\x0b\x22\x59\x91\x4f\x22\x0b\x23\x8b\x22\xd9"
        "\x91\x4f\x23\x8b\x23\x9f\x45\x72\x22\x4b\x22\x4b\x23\xcb\x22\xcb\x23"
        "\x2b\x22\xde\x17\xdb\x12\xfa\x12\xbe\xa4\x8f\xfa\x9b\x7c\x29\x7f\xb3"
        "\x4f\xf2\xa5\x7d\x19\x5f\xd6\x3b\x5f\xce\x27\xfb\x5b\x7c\x79\x7f\xab"
        "\xaf\xe0\x6f\xf3\x15\xfd\xed\xbe\x92\xbf\xc3\x57\xf6\x55\x7c\x55\xff"
        "\xb8\x6f\xe1\x9f\xf0\x2d\x7d\x2b\xdf\xda\x3f\xe9\xdb\xf8\xa7\x7c\x5b"
        "\xdf\xce\xb7\xf7\x4f\xfb\x0e\xfe\x19\xdf\xd1\x3f\xeb\x53\xfc\x73\xbe"
        "\x93\x7f\xde\x77\xf6\x7f\xf2\x5d\xfc\x0b\xbe\xab\x7f\xd1\x77\xf3\x2f"
        "\xf9\xee\xbe\x87\xef\xe9\x5f\xf6\xbd\xfc\x2b\xbe\xb7\xef\xe3\x53\x7d"
        "\x5f\xdf\xcf\xbf\xea\xfb\xfb\x01\x7e\xa0\x7f\xcd\x0f\xf2\xaf\xfb\xc1"
        "\xfe\x0d\x3f\xc4\xbf\xe9\xd3\xfc\x50\x3f\xcc\xbf\xe5\x87\xfb\xb7\xfd"
        "\x08\xff\x8e\x1f\xe9\x47\xf9\xd1\xfe\x5d\x3f\xc6\x8f\xf5\xe3\xfc\x78"
        "\x3f\xc1\x4f\xf4\xe9\xfe\x3d\x3f\xc9\xbf\xef\x27\xfb\x0f\xfc\x14\x3f"
        "\xd5\x4f\xf3\xd3\x7d\x86\x9f\xe1\x67\xfa\x0f\xfd\x2c\x3f\xdb\xcf\xf1"
        "\x1f\xf9\x4c\xff\xb1\x9f\xeb\xe7\xf9\xf9\x7e\x81\xcf\xf2\x9f\xf8\x85"
        "\x7e\x91\xcf\xf6\x9f\xfa\xc5\xfe\x33\x9f\xe3\x97\xf8\xa5\x7e\x99\x5f"
        "\xee\x57\xf8\x95\x7e\x95\x5f\xed\xd7\xf8\xb5\x7e\x9d\x5f\xef\x37\xf8"
        "\x8d\x7e\x93\xdf\xec\x3f\xf7\x5b\xfc\x56\xbf\xcd\x6f\xf7\x3b\xfc\x4e"
        "\xbf\xcb\x7f\xe1\x77\xfb\x2f\xfd\x1e\xff\x95\xcf\xf5\x5f\xfb\xbd\xfe"
        "\xcf\x7e\x9f\xff\xc6\xef\xf7\xdf\xfa\x03\xfe\x3b\x7f\xd0\x7f\xef\x0f"
        "\xf9\x1f\xfc\x61\xff\xa3\x3f\xe2\x7f\xf2\x47\xfd\x31\x7f\xdc\x9f\xf0"
        "\x27\xfd\xcf\xfe\x94\x3f\xed\xcf\xf8\xb3\xfe\x9c\xff\xc5\x9f\xf7\x17"
        "\xfc\x45\xfe\x9f\x35\xc6\x18\x63\x8c\xb1\xff\x88\xba\xc2\xf1\xbe\xff"
        "\xe4\x73\xf2\xb7\x71\x49\x3f\x21\xc4\xb5\x5b\x8b\x1e\xf8\xc7\x9a\xeb"
        "\x0b\xfd\x65\x3e\x40\x26\x76\x88\x08\x21\x9e\xeb\xd3\xed\x91\xbf\x8e"
        "\x5a\xb5\x52\x53\x53\x7f\x7b\x6c\x8e\x12\x41\xc9\x79\x42\x88\xc8\xe5"
        "\xfc\x5f\xff\xe0\xfa\x5b\xbc\x44\xb4\x17\xcf\x88\x14\xd1\x4e\x94\xff"
        "\xa7\xeb\x1b\x20\x7b\x9c\xa3\x2b\xd4\x8f\xde\x2e\x44\xdc\xdf\xe4\xc4"
        "\x8a\xcb\xf1\xe5\xfa\xb7\xfe\x8b\xfa\x63\x33\xaf\x58\x7f\x9e\x10\x49"
        "\x25\x2f\xe7\xe4\x17\x97\xe3\xcb\xf5\x2b\xfc\x8b\xfa\x85\xdb\x5c\xa1"
        "\x7e\xfe\x6f\xd2\x85\x68\xfb\x37\x39\xf1\xe2\x72\x7c\xb9\x7e\xb2\x78"
        "\x4a\x3c\x2f\x52\xfe\xee\x91\x8c\x31\xc6\x18\x63\x8c\x31\xc6\xd8\x5f"
        "\x0c\x90\x55\xbb\x5c\xe9\xfa\xf6\xd2\xf5\x79\xa2\xbe\x9c\x93\x4f\x5c"
        "\x8e\xaf\x74\x7d\xfe\x2f\xcd\xf8\xe3\xf6\xc0\x18\x63\x8c\x31\xc6\x18"
        "\x63\x8c\xb1\x7f\xef\x85\x1e\x3d\x9f\x7d\x32\x25\xa5\x5d\x17\x9e\xf0"
        "\xe4\xdf\x4e\xf2\xff\xbf\xb1\x0c\x9e\xfc\x5f\x9a\x5c\xed\xdf\x4c\x8c"
        "\x31\xc6\x18\x63\x8c\xb1\x3f\xda\xe5\x93\xfe\xab\xbd\x12\xc6\x18\x63"
        "\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31"
        "\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18"
        "\x63\x2c\xef\xfa\x27\x77\xff\x3a\xe7\xff\xe0\xdb\x89\x5d\xed\x3d\x32"
        "\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18"
        "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c"
        "\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x57\xdb\xff"
        "\x08\x00\x00\xff\xff\x64\x2d\x39\xb0",
        5364));
    NONFAILING(syz_mount_image(
        /*fs=*/0x20000200, /*dir=*/0x200000c0, /*flags=*/0x20000020,
        /*opts=*/0x20000280, /*chdir=*/1, /*size=*/0x14f4, /*img=*/0x20001880));
    break;
  case 1:
    NONFAILING(memcpy((void*)0x20006ac0, "cpuacct.stat\000", 13));
    res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20006ac0ul,
                  /*flags=*/0x275aul, /*mode=*/0ul);
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x400000ul, /*prot=*/1ul,
            /*flags=*/0x10012ul, /*fd=*/r[0], /*offset=*/0ul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/7ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  setup_sysctl();
  setup_cgroups();
  setup_binfmt_misc();
  setup_usb();
  install_segv_handler();
  use_temporary_dir();
  do_sandbox_none();
  return 0;
}