// https://syzkaller.appspot.com/bug?id=48b901470c6047df68df7ff565f630b0e1d98679
// 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/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/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 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 void netlink_add_device_impl(struct nlmsg* nlmsg, const char* type,
                                    const char* name)
{
  struct ifinfomsg hdr;
  memset(&hdr, 0, sizeof(hdr));
  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_nest(nlmsg, IFLA_LINKINFO);
  netlink_attr(nlmsg, IFLA_INFO_KIND, type, strlen(type));
}

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 {
  uint8_t type;
  uint8_t opcode;
  uint16_t id;
};

#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

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 vendor_pkt;
  if (read(vhci_fd, &vendor_pkt, sizeof(vendor_pkt)) != sizeof(vendor_pkt))
    exit(1);
  if (vendor_pkt.type != HCI_VENDOR_PKT)
    exit(1);
  pthread_t th;
  if (pthread_create(&th, NULL, event_thread, NULL))
    exit(1);
  int ret = ioctl(hci_sock, HCIDEVUP, vendor_pkt.id);
  if (ret) {
    if (errno == ERFKILL) {
      rfkill_unblock_all();
      ret = ioctl(hci_sock, HCIDEVUP, vendor_pkt.id);
    }
    if (ret && errno != EALREADY)
      exit(1);
  }
  struct hci_dev_req dr = {0};
  dr.dev_id = vendor_pkt.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);
}

struct fs_image_segment {
  void* data;
  uintptr_t size;
  uintptr_t offset;
};

#define IMAGE_MAX_SEGMENTS 4096
#define IMAGE_MAX_SIZE (129 << 20)

static unsigned long fs_image_segment_check(unsigned long size,
                                            unsigned long nsegs,
                                            struct fs_image_segment* segs)
{
  if (nsegs > IMAGE_MAX_SEGMENTS)
    nsegs = IMAGE_MAX_SEGMENTS;
  for (size_t i = 0; i < nsegs; i++) {
    if (segs[i].size > IMAGE_MAX_SIZE)
      segs[i].size = IMAGE_MAX_SIZE;
    segs[i].offset %= IMAGE_MAX_SIZE;
    if (segs[i].offset > IMAGE_MAX_SIZE - segs[i].size)
      segs[i].offset = IMAGE_MAX_SIZE - segs[i].size;
    if (size < segs[i].offset + segs[i].offset)
      size = segs[i].offset + segs[i].offset;
  }
  if (size > IMAGE_MAX_SIZE)
    size = IMAGE_MAX_SIZE;
  return size;
}
static int setup_loop_device(long unsigned size, long unsigned nsegs,
                             struct fs_image_segment* segs,
                             const char* loopname, int* memfd_p, int* loopfd_p)
{
  int err = 0, loopfd = -1;
  size = fs_image_segment_check(size, nsegs, segs);
  int memfd = syscall(__NR_memfd_create, "syzkaller", 0);
  if (memfd == -1) {
    err = errno;
    goto error;
  }
  if (ftruncate(memfd, size)) {
    err = errno;
    goto error_close_memfd;
  }
  for (size_t i = 0; i < nsegs; i++) {
    if (pwrite(memfd, segs[i].data, segs[i].size, segs[i].offset) < 0) {
    }
  }
  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;
    }
  }
  *memfd_p = 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 unsigned long size,
                            volatile unsigned long nsegs,
                            volatile long segments, volatile long flags,
                            volatile long optsarg)
{
  struct fs_image_segment* segs = (struct fs_image_segment*)segments;
  int res = -1, err = 0, loopfd = -1, memfd = -1, need_loop_device = !!segs;
  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(size, nsegs, segs, loopname, &memfd, &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) {
    if (strstr(opts, "errors=panic") || strstr(opts, "errors=remount-ro") == 0)
      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;
  }

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

static void mount_cgroups(const char* dir, const char** controllers, int count)
{
  if (mkdir(dir, 0777)) {
  }
  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)
    return;
  if (mount("none", dir, "cgroup", 0, enabled + 1)) {
  }
  if (chmod(dir, 0777)) {
  }
}

static void setup_cgroups()
{
  const char* unified_controllers[] = {"+cpu", "+memory", "+io", "+pids"};
  const char* net_controllers[] = {"net", "net_prio", "devices", "blkio",
                                   "freezer"};
  const char* cpu_controllers[] = {"cpuset", "cpuacct", "hugetlb", "rlimit"};
  if (mkdir("/syzcgroup", 0777)) {
  }
  if (mkdir("/syzcgroup/unified", 0777)) {
  }
  if (mount("none", "/syzcgroup/unified", "cgroup2", 0, NULL)) {
  }
  if (chmod("/syzcgroup/unified", 0777)) {
  }
  int unified_control =
      open("/syzcgroup/unified/cgroup.subtree_control", O_WRONLY);
  if (unified_control != -1) {
    unsigned i;
    for (i = 0;
         i < sizeof(unified_controllers) / sizeof(unified_controllers[0]); i++)
      if (write(unified_control, unified_controllers[i],
                strlen(unified_controllers[i])) < 0) {
      }
    close(unified_control);
  }
  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/memory.low", cgroupdir);
  write_file(file, "%d", 298 << 20);
  snprintf(file, sizeof(file), "%s/memory.high", cgroupdir);
  write_file(file, "%d", 299 << 20);
  snprintf(file, sizeof(file), "%s/memory.max", cgroupdir);
  write_file(file, "%d", 300 << 20);
  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(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 = 0;
  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)) {
  }
  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();
}

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);
  }
}

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_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/net/ipv4/ping_group_range", "0 65535"},
      {"/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));
  }
}

#define NL802154_CMD_SET_SHORT_ADDR 11
#define NL802154_ATTR_IFINDEX 3
#define NL802154_ATTR_SHORT_ADDR 10

static void setup_802154()
{
  int sock_route = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock_route == -1)
    exit(1);
  int sock_generic = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
  if (sock_generic < 0)
    exit(1);
  int nl802154_family_id =
      netlink_query_family_id(&nlmsg, sock_generic, "nl802154", true);
  for (int i = 0; i < 2; i++) {
    char devname[] = "wpan0";
    devname[strlen(devname) - 1] += i;
    uint64_t hwaddr = 0xaaaaaaaaaaaa0002 + (i << 8);
    uint16_t shortaddr = 0xaaa0 + i;
    int ifindex = if_nametoindex(devname);
    struct genlmsghdr genlhdr;
    memset(&genlhdr, 0, sizeof(genlhdr));
    genlhdr.cmd = NL802154_CMD_SET_SHORT_ADDR;
    netlink_init(&nlmsg, nl802154_family_id, 0, &genlhdr, sizeof(genlhdr));
    netlink_attr(&nlmsg, NL802154_ATTR_IFINDEX, &ifindex, sizeof(ifindex));
    netlink_attr(&nlmsg, NL802154_ATTR_SHORT_ADDR, &shortaddr,
                 sizeof(shortaddr));
    int err = netlink_send(&nlmsg, sock_generic);
    if (err < 0) {
    }
    netlink_device_change(&nlmsg, sock_route, devname, true, 0, &hwaddr,
                          sizeof(hwaddr), 0);
    if (i == 0) {
      netlink_add_device_impl(&nlmsg, "lowpan", "lowpan0");
      netlink_done(&nlmsg);
      netlink_attr(&nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex));
      int err = netlink_send(&nlmsg, sock_route);
      if (err < 0) {
      }
    }
  }
  close(sock_route);
  close(sock_generic);
}

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();
      close_fds();
      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);
  }
}

void execute_one(void)
{
  NONFAILING(memcpy((void*)0x20000000, "jfs\000", 4));
  NONFAILING(memcpy((void*)0x20000100, "./file0\000", 8));
  NONFAILING(*(uint64_t*)0x20000200 = 0x20010000);
  NONFAILING(memcpy(
      (void*)0x20010000,
      "\x4a\x46\x53\x31\x01\x00\x00\x00\x60\x76\x00\x00\x00\x00\x00\x00\x00\x10"
      "\x00\x00\x0c\x00\x03\x00\x00\x02\x00\x00\x09\x00\x00\x00\x00\x20\x00\x00"
      "\x00\x09\x00\x40\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x18\x00"
      "\x00\x00\x02\x00\x00\x00\x16\x00\x00\x00\x34\x07\x00\x00\x01\x00\x00\x00"
      "\x00\x01\x00\x00\x00\x0f\x00\x00\x34\x00\x00\x00\xcc\x0e\x00\x00\x10\xc4"
      "\x64\x5f\x00\x00\x00\x00\x32\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\x90\x93\x95\x0c\x4e\x4f\x40\xb5"
      "\xba\xea\xf5\x1d\x76\xba\x1a\xec\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x70\x63\xec\xd9"
      "\xfc\x7f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
      192));
  NONFAILING(*(uint64_t*)0x20000208 = 0xc0);
  NONFAILING(*(uint64_t*)0x20000210 = 0x8000);
  NONFAILING(*(uint64_t*)0x20000218 = 0);
  NONFAILING(*(uint64_t*)0x20000220 = 0);
  NONFAILING(*(uint64_t*)0x20000228 = 0x9000);
  NONFAILING(*(uint64_t*)0x20000230 = 0);
  NONFAILING(*(uint64_t*)0x20000238 = 0);
  NONFAILING(*(uint64_t*)0x20000240 = 0x9800);
  NONFAILING(*(uint64_t*)0x20000248 = 0);
  NONFAILING(*(uint64_t*)0x20000250 = 0);
  NONFAILING(*(uint64_t*)0x20000258 = 0xa800);
  NONFAILING(*(uint64_t*)0x20000260 = 0);
  NONFAILING(*(uint64_t*)0x20000268 = 0);
  NONFAILING(*(uint64_t*)0x20000270 = 0xaa00);
  NONFAILING(*(uint64_t*)0x20000278 = 0);
  NONFAILING(*(uint64_t*)0x20000280 = 0);
  NONFAILING(*(uint64_t*)0x20000288 = 0xac00);
  NONFAILING(*(uint64_t*)0x20000290 = 0);
  NONFAILING(*(uint64_t*)0x20000298 = 0);
  NONFAILING(*(uint64_t*)0x200002a0 = 0xb020);
  NONFAILING(*(uint64_t*)0x200002a8 = 0x20010f00);
  NONFAILING(memcpy(
      (void*)0x20010f00,
      "\x10\xc4\x64\x5f\x01\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x04\x00"
      "\x00\x00\x0b\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00"
      "\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80"
      "\x01\x00\x10\xc4\x64\x5f\x00\x00\x00\x00\x10\xc4\x64\x5f\x00\x00\x00\x00"
      "\x10\xc4\x64\x5f\x00\x00\x00\x00\x10\xc4\x64\x5f\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\x02\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
      160));
  NONFAILING(*(uint64_t*)0x200002b0 = 0xa0);
  NONFAILING(*(uint64_t*)0x200002b8 = 0xb200);
  NONFAILING(*(uint64_t*)0x200002c0 = 0x20011000);
  NONFAILING(
      memcpy((void*)0x20011000,
             "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
             "\x83\x00\x03\x00\x12\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
             "\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x09\x00\x00\x00"
             "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
             64));
  NONFAILING(*(uint64_t*)0x200002c8 = 0x40);
  NONFAILING(*(uint64_t*)0x200002d0 = 0xb2e0);
  NONFAILING(*(uint64_t*)0x200002d8 = 0x20011100);
  NONFAILING(
      memcpy((void*)0x20011100,
             "\x10\xc4\x64\x5f\x01\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x00"
             "\x04\x00\x00\x00\x0b\x00\x00\x00\x00\x60\x00\x00\x00\x00\x00\x00"
             "\x06\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00"
             "\x00\x00\x00\x00\x00\x80\x01\x00\x10\xc4\x64\x5f\x00\x00\x00\x00"
             "\x10\xc4\x64\x5f\x00\x00\x00\x00\x10\xc4\x64\x5f\x00\x00\x00\x00"
             "\x10\xc4\x64\x5f\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\x02\x00\x00\x00\x00\x00\x00\x00",
             128));
  NONFAILING(*(uint64_t*)0x200002e0 = 0x80);
  NONFAILING(*(uint64_t*)0x200002e8 = 0xb400);
  NONFAILING(*(uint64_t*)0x200002f0 = 0x20011200);
  NONFAILING(
      memcpy((void*)0x20011200,
             "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
             "\x83\x00\x03\x00\x12\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
             "\x00\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x10\x00\x00\x00"
             "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
             64));
  NONFAILING(*(uint64_t*)0x200002f8 = 0x40);
  NONFAILING(*(uint64_t*)0x20000300 = 0xb4e0);
  NONFAILING(*(uint64_t*)0x20000308 = 0);
  NONFAILING(*(uint64_t*)0x20000310 = 0);
  NONFAILING(*(uint64_t*)0x20000318 = 0xb600);
  NONFAILING(*(uint64_t*)0x20000320 = 0);
  NONFAILING(*(uint64_t*)0x20000328 = 0);
  NONFAILING(*(uint64_t*)0x20000330 = 0xb6e0);
  NONFAILING(*(uint64_t*)0x20000338 = 0);
  NONFAILING(*(uint64_t*)0x20000340 = 0);
  NONFAILING(*(uint64_t*)0x20000348 = 0xb800);
  NONFAILING(*(uint64_t*)0x20000350 = 0);
  NONFAILING(*(uint64_t*)0x20000358 = 0);
  NONFAILING(*(uint64_t*)0x20000360 = 0xb8e0);
  NONFAILING(*(uint64_t*)0x20000368 = 0x20011700);
  NONFAILING(memcpy(
      (void*)0x20011700,
      "\x10\xc4\x64\x5f\x01\x00\x00\x00\x10\x00\x00\x00\x01\x00\x00\x00\x04\x00"
      "\x00\x00\x0b\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00"
      "\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80"
      "\x01\x00\x10\xc4\x64\x5f\x00\x00\x00\x00\x10\xc4\x64\x5f\x00\x00\x00\x00"
      "\x10\xc4\x64\x5f\x00\x00\x00\x00\x10\xc4\x64\x5f\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\x02\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
      160));
  NONFAILING(*(uint64_t*)0x20000370 = 0xa0);
  NONFAILING(*(uint64_t*)0x20000378 = 0xd000);
  NONFAILING(*(uint64_t*)0x20000380 = 0x20011800);
  NONFAILING(
      memcpy((void*)0x20011800,
             "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
             "\x83\x00\x03\x00\x12\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
             "\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x20\x00\x00\x00"
             "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
             64));
  NONFAILING(*(uint64_t*)0x20000388 = 0x40);
  NONFAILING(*(uint64_t*)0x20000390 = 0xd0e0);
  NONFAILING(*(uint64_t*)0x20000398 = 0x20011900);
  NONFAILING(*(uint64_t*)0x200003a0 = 0);
  NONFAILING(*(uint64_t*)0x200003a8 = 0xf000);
  NONFAILING(*(uint64_t*)0x200003b0 = 0);
  NONFAILING(*(uint64_t*)0x200003b8 = 0);
  NONFAILING(*(uint64_t*)0x200003c0 = 0x10000);
  NONFAILING(*(uint64_t*)0x200003c8 = 0x20011b00);
  NONFAILING(*(uint64_t*)0x200003d0 = 0);
  NONFAILING(*(uint64_t*)0x200003d8 = 0x10420);
  NONFAILING(*(uint64_t*)0x200003e0 = 0x20011c00);
  NONFAILING(*(uint64_t*)0x200003e8 = 0);
  NONFAILING(*(uint64_t*)0x200003f0 = 0x13000);
  NONFAILING(*(uint64_t*)0x200003f8 = 0x20012200);
  NONFAILING(*(uint64_t*)0x20000400 = 0);
  NONFAILING(*(uint64_t*)0x20000408 = 0x14000);
  NONFAILING(*(uint64_t*)0x20000410 = 0);
  NONFAILING(*(uint64_t*)0x20000418 = 0);
  NONFAILING(*(uint64_t*)0x20000420 = 0x14800);
  NONFAILING(*(uint64_t*)0x20000428 = 0);
  NONFAILING(*(uint64_t*)0x20000430 = 0);
  NONFAILING(*(uint64_t*)0x20000438 = 0x149c0);
  NONFAILING(*(uint64_t*)0x20000440 = 0x20012800);
  NONFAILING(*(uint64_t*)0x20000448 = 0);
  NONFAILING(*(uint64_t*)0x20000450 = 0x14dc0);
  NONFAILING(*(uint64_t*)0x20000458 = 0);
  NONFAILING(*(uint64_t*)0x20000460 = 0);
  NONFAILING(*(uint64_t*)0x20000468 = 0x16000);
  NONFAILING(*(uint64_t*)0x20000470 = 0);
  NONFAILING(*(uint64_t*)0x20000478 = 0);
  NONFAILING(*(uint64_t*)0x20000480 = 0x16800);
  NONFAILING(*(uint64_t*)0x20000488 = 0);
  NONFAILING(*(uint64_t*)0x20000490 = 0);
  NONFAILING(*(uint64_t*)0x20000498 = 0x17800);
  NONFAILING(*(uint64_t*)0x200004a0 = 0);
  NONFAILING(*(uint64_t*)0x200004a8 = 0);
  NONFAILING(*(uint64_t*)0x200004b0 = 0x17a00);
  NONFAILING(*(uint64_t*)0x200004b8 = 0);
  NONFAILING(*(uint64_t*)0x200004c0 = 0);
  NONFAILING(*(uint64_t*)0x200004c8 = 0x17c00);
  NONFAILING(*(uint64_t*)0x200004d0 = 0);
  NONFAILING(*(uint64_t*)0x200004d8 = 0);
  NONFAILING(*(uint64_t*)0x200004e0 = 0x18020);
  NONFAILING(*(uint64_t*)0x200004e8 = 0x20013900);
  NONFAILING(memcpy(
      (void*)0x20013900,
      "\x10\xc4\x64\x5f\x01\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x04\x00"
      "\x00\x00\x18\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00"
      "\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80"
      "\x01\x00\x10\xc4\x64\x5f\x00\x00\x00\x00\x10\xc4\x64\x5f\x00\x00\x00\x00"
      "\x10\xc4\x64\x5f\x00\x00\x00\x00\x10\xc4\x64\x5f\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\x02\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
      160));
  NONFAILING(*(uint64_t*)0x200004f0 = 0xa0);
  NONFAILING(*(uint64_t*)0x200004f8 = 0x18200);
  NONFAILING(*(uint64_t*)0x20000500 = 0x20013a00);
  NONFAILING(
      memcpy((void*)0x20013a00,
             "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
             "\x83\x00\x03\x00\x12\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
             "\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x16\x00\x00\x00"
             "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
             64));
  NONFAILING(*(uint64_t*)0x20000508 = 0x40);
  NONFAILING(*(uint64_t*)0x20000510 = 0x182e0);
  NONFAILING(*(uint64_t*)0x20000518 = 0);
  NONFAILING(*(uint64_t*)0x20000520 = 0);
  NONFAILING(*(uint64_t*)0x20000528 = 0x18400);
  NONFAILING(*(uint64_t*)0x20000530 = 0);
  NONFAILING(*(uint64_t*)0x20000538 = 0);
  NONFAILING(*(uint64_t*)0x20000540 = 0x184e0);
  NONFAILING(*(uint64_t*)0x20000548 = 0);
  NONFAILING(*(uint64_t*)0x20000550 = 0);
  NONFAILING(*(uint64_t*)0x20000558 = 0x18600);
  NONFAILING(*(uint64_t*)0x20000560 = 0x20013e00);
  NONFAILING(*(uint64_t*)0x20000568 = 0);
  NONFAILING(*(uint64_t*)0x20000570 = 0x186e0);
  NONFAILING(*(uint64_t*)0x20000578 = 0);
  NONFAILING(*(uint64_t*)0x20000580 = 0);
  NONFAILING(*(uint64_t*)0x20000588 = 0x18800);
  NONFAILING(*(uint64_t*)0x20000590 = 0);
  NONFAILING(*(uint64_t*)0x20000598 = 0);
  NONFAILING(*(uint64_t*)0x200005a0 = 0x188e0);
  NONFAILING(*(uint64_t*)0x200005a8 = 0);
  NONFAILING(*(uint64_t*)0x200005b0 = 0);
  NONFAILING(*(uint64_t*)0x200005b8 = 0x1a000);
  NONFAILING(*(uint64_t*)0x200005c0 = 0);
  NONFAILING(*(uint64_t*)0x200005c8 = 0);
  NONFAILING(*(uint64_t*)0x200005d0 = 0x1a0e0);
  NONFAILING(*(uint64_t*)0x200005d8 = 0x20014300);
  NONFAILING(*(uint64_t*)0x200005e0 = 0);
  NONFAILING(*(uint64_t*)0x200005e8 = 0x1c000);
  NONFAILING(*(uint64_t*)0x200005f0 = 0x20014400);
  NONFAILING(
      memcpy((void*)0x20014400,
             "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
             "\x83\x00\x02\x00\x12\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
             32));
  NONFAILING(*(uint64_t*)0x200005f8 = 0x20);
  NONFAILING(*(uint64_t*)0x20000600 = 0x1c0e0);
  NONFAILING(*(uint64_t*)0x20000608 = 0);
  NONFAILING(*(uint64_t*)0x20000610 = 0);
  NONFAILING(*(uint64_t*)0x20000618 = 0x1c200);
  NONFAILING(*(uint64_t*)0x20000620 = 0);
  NONFAILING(*(uint64_t*)0x20000628 = 0);
  NONFAILING(*(uint64_t*)0x20000630 = 0x1c2e0);
  NONFAILING(*(uint64_t*)0x20000638 = 0x20014700);
  NONFAILING(
      memcpy((void*)0x20014700,
             "\x10\xc4\x64\x5f\x10\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x00"
             "\x04\x00\x00\x00\x1c\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00"
             "\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00"
             "\x00\x00\x00\x00\xed\x41\x01\x00\x10\xc4\x64\x5f\x00\x00\x00\x00"
             "\x10\xc4\x64\x5f\xcd\x63\x56\x3a\x10\xc4\x64\x5f\xcd\x63\x56\x3a"
             "\x10\xc4\x64\x5f\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\x02\x00\x00\x00\x00\x00\x00\x00",
             128));
  NONFAILING(*(uint64_t*)0x20000640 = 0x80);
  NONFAILING(*(uint64_t*)0x20000648 = 0x1c400);
  NONFAILING(*(uint64_t*)0x20000650 = 0);
  NONFAILING(*(uint64_t*)0x20000658 = 0);
  NONFAILING(*(uint64_t*)0x20000660 = 0x1c4e0);
  NONFAILING(*(uint64_t*)0x20000668 = 0x20014a00);
  NONFAILING(*(uint64_t*)0x20000670 = 0);
  NONFAILING(*(uint64_t*)0x20000678 = 0x1c6e0);
  NONFAILING(*(uint64_t*)0x20000680 = 0);
  NONFAILING(*(uint64_t*)0x20000688 = 0);
  NONFAILING(*(uint64_t*)0x20000690 = 0x1c800);
  NONFAILING(*(uint64_t*)0x20000698 = 0);
  NONFAILING(*(uint64_t*)0x200006a0 = 0);
  NONFAILING(*(uint64_t*)0x200006a8 = 0x1c8e0);
  NONFAILING(*(uint64_t*)0x200006b0 = 0);
  NONFAILING(*(uint64_t*)0x200006b8 = 0);
  NONFAILING(*(uint64_t*)0x200006c0 = 0x1c980);
  NONFAILING(*(uint64_t*)0x200006c8 = 0x20014e00);
  NONFAILING(*(uint64_t*)0x200006d0 = 0);
  NONFAILING(*(uint64_t*)0x200006d8 = 0x1ca00);
  NONFAILING(*(uint64_t*)0x200006e0 = 0);
  NONFAILING(*(uint64_t*)0x200006e8 = 0);
  NONFAILING(*(uint64_t*)0x200006f0 = 0x1cae0);
  NONFAILING(*(uint64_t*)0x200006f8 = 0);
  NONFAILING(*(uint64_t*)0x20000700 = 0);
  NONFAILING(*(uint64_t*)0x20000708 = 0x1cc00);
  NONFAILING(*(uint64_t*)0x20000710 = 0);
  NONFAILING(*(uint64_t*)0x20000718 = 0);
  NONFAILING(*(uint64_t*)0x20000720 = 0x1cce0);
  NONFAILING(*(uint64_t*)0x20000728 = 0x20015200);
  NONFAILING(
      memcpy((void*)0x20015200,
             "\xff\xff\xff\xff\x01\x00\x00\x00\x40\x00\x00\x00\x36\x00\x00\x00"
             "\x04\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
             32));
  NONFAILING(*(uint64_t*)0x20000730 = 0x20);
  NONFAILING(*(uint64_t*)0x20000738 = 0x20000);
  NONFAILING(*(uint64_t*)0x20000740 = 0x20015300);
  NONFAILING(*(uint64_t*)0x20000748 = 0);
  NONFAILING(*(uint64_t*)0x20000750 = 0x20800);
  NONFAILING(*(uint64_t*)0x20000758 = 0x20015c00);
  NONFAILING(*(uint64_t*)0x20000760 = 0);
  NONFAILING(*(uint64_t*)0x20000768 = 0x21800);
  NONFAILING(*(uint64_t*)0x20000770 = 0);
  NONFAILING(*(uint64_t*)0x20000778 = 0);
  NONFAILING(*(uint64_t*)0x20000780 = 0x21a00);
  NONFAILING(*(uint64_t*)0x20000788 = 0);
  NONFAILING(*(uint64_t*)0x20000790 = 0);
  NONFAILING(*(uint64_t*)0x20000798 = 0x21c00);
  NONFAILING(*(uint64_t*)0x200007a0 = 0);
  NONFAILING(*(uint64_t*)0x200007a8 = 0);
  NONFAILING(*(uint64_t*)0x200007b0 = 0x22000);
  NONFAILING(*(uint64_t*)0x200007b8 = 0x20016000);
  NONFAILING(*(uint64_t*)0x200007c0 = 0);
  NONFAILING(*(uint64_t*)0x200007c8 = 0x24000);
  NONFAILING(*(uint64_t*)0x200007d0 = 0);
  NONFAILING(*(uint64_t*)0x200007d8 = 0);
  NONFAILING(*(uint64_t*)0x200007e0 = 0x240e0);
  NONFAILING(*(uint64_t*)0x200007e8 = 0);
  NONFAILING(*(uint64_t*)0x200007f0 = 0);
  NONFAILING(*(uint64_t*)0x200007f8 = 0x242e0);
  NONFAILING(*(uint64_t*)0x20000800 = 0);
  NONFAILING(*(uint64_t*)0x20000808 = 0);
  NONFAILING(*(uint64_t*)0x20000810 = 0x24400);
  NONFAILING(*(uint64_t*)0x20000818 = 0);
  NONFAILING(*(uint64_t*)0x20000820 = 0);
  NONFAILING(*(uint64_t*)0x20000828 = 0x244e0);
  NONFAILING(*(uint64_t*)0x20000830 = 0);
  NONFAILING(*(uint64_t*)0x20000838 = 0);
  NONFAILING(*(uint64_t*)0x20000840 = 0x24600);
  NONFAILING(*(uint64_t*)0x20000848 = 0);
  NONFAILING(*(uint64_t*)0x20000850 = 0);
  NONFAILING(*(uint64_t*)0x20000858 = 0x24800);
  NONFAILING(*(uint64_t*)0x20000860 = 0x20016800);
  NONFAILING(*(uint64_t*)0x20000868 = 0);
  NONFAILING(*(uint64_t*)0x20000870 = 0x24a00);
  NONFAILING(*(uint64_t*)0x20000878 = 0);
  NONFAILING(*(uint64_t*)0x20000880 = 0);
  NONFAILING(*(uint64_t*)0x20000888 = 0x24c00);
  NONFAILING(*(uint64_t*)0x20000890 = 0);
  NONFAILING(*(uint64_t*)0x20000898 = 0);
  NONFAILING(*(uint64_t*)0x200008a0 = 0x24e00);
  NONFAILING(*(uint64_t*)0x200008a8 = 0x20016b00);
  NONFAILING(*(uint64_t*)0x200008b0 = 0);
  NONFAILING(*(uint64_t*)0x200008b8 = 0x25000);
  NONFAILING(*(uint64_t*)0x200008c0 = 0);
  NONFAILING(*(uint64_t*)0x200008c8 = 0);
  NONFAILING(*(uint64_t*)0x200008d0 = 0x25200);
  NONFAILING(*(uint64_t*)0x200008d8 = 0x20016d00);
  NONFAILING(*(uint64_t*)0x200008e0 = 0);
  NONFAILING(*(uint64_t*)0x200008e8 = 0x25400);
  NONFAILING(*(uint64_t*)0x200008f0 = 0x20016e00);
  NONFAILING(
      memcpy((void*)0x20016e00,
             "\x10\xc4\x64\x5f\x10\x00\x00\x00\x2b\x00\x00\x00\x00\x00\x00\x00"
             "\x04\x00\x00\x00\x24\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
             32));
  NONFAILING(*(uint64_t*)0x200008f8 = 0x20);
  NONFAILING(*(uint64_t*)0x20000900 = 0x25600);
  NONFAILING(*(uint64_t*)0x20000908 = 0x20016f00);
  NONFAILING(*(uint64_t*)0x20000910 = 0);
  NONFAILING(*(uint64_t*)0x20000918 = 0x25800);
  NONFAILING(*(uint64_t*)0x20000920 = 0);
  NONFAILING(*(uint64_t*)0x20000928 = 0);
  NONFAILING(*(uint64_t*)0x20000930 = 0x25a00);
  NONFAILING(*(uint64_t*)0x20000938 = 0x20017100);
  NONFAILING(*(uint64_t*)0x20000940 = 0);
  NONFAILING(*(uint64_t*)0x20000948 = 0x25c00);
  NONFAILING(*(uint64_t*)0x20000950 = 0x20017200);
  NONFAILING(
      memcpy((void*)0x20017200,
             "\x10\xc4\x64\x5f\x10\x00\x00\x00\x2f\x00\x00\x00\x00\x00\x00\x00"
             "\x04\x00\x00\x00\x24\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
             32));
  NONFAILING(*(uint64_t*)0x20000958 = 0x20);
  NONFAILING(*(uint64_t*)0x20000960 = 0x25e00);
  NONFAILING(*(uint64_t*)0x20000968 = 0);
  NONFAILING(*(uint64_t*)0x20000970 = 0);
  NONFAILING(*(uint64_t*)0x20000978 = 0x26000);
  NONFAILING(*(uint64_t*)0x20000980 = 0);
  NONFAILING(*(uint64_t*)0x20000988 = 0);
  NONFAILING(*(uint64_t*)0x20000990 = 0x26200);
  NONFAILING(*(uint64_t*)0x20000998 = 0x20017500);
  NONFAILING(
      memcpy((void*)0x20017500,
             "\x10\xc4\x64\x5f\x10\x00\x00\x00\x32\x00\x00\x00\x00\x00\x00\x00"
             "\x04\x00\x00\x00\x24\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
             32));
  NONFAILING(*(uint64_t*)0x200009a0 = 0x20);
  NONFAILING(*(uint64_t*)0x200009a8 = 0x26400);
  NONFAILING(*(uint64_t*)0x200009b0 = 0);
  NONFAILING(*(uint64_t*)0x200009b8 = 0);
  NONFAILING(*(uint64_t*)0x200009c0 = 0x26600);
  NONFAILING(*(uint64_t*)0x200009c8 = 0);
  NONFAILING(*(uint64_t*)0x200009d0 = 0);
  NONFAILING(*(uint64_t*)0x200009d8 = 0x26800);
  NONFAILING(*(uint64_t*)0x200009e0 = 0x20017800);
  NONFAILING(
      memcpy((void*)0x20017800,
             "\x10\xc4\x64\x5f\x10\x00\x00\x00\x35\x00\x00\x00\x00\x00\x00\x00"
             "\x04\x00\x00\x00\x24\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
             32));
  NONFAILING(*(uint64_t*)0x200009e8 = 0x20);
  NONFAILING(*(uint64_t*)0x200009f0 = 0x26a00);
  NONFAILING(*(uint64_t*)0x200009f8 = 0);
  NONFAILING(*(uint64_t*)0x20000a00 = 0);
  NONFAILING(*(uint64_t*)0x20000a08 = 0x26c00);
  NONFAILING(*(uint64_t*)0x20000a10 = 0x20017a00);
  NONFAILING(*(uint64_t*)0x20000a18 = 0);
  NONFAILING(*(uint64_t*)0x20000a20 = 0x26e00);
  NONFAILING(*(uint64_t*)0x20000a28 = 0);
  NONFAILING(*(uint64_t*)0x20000a30 = 0);
  NONFAILING(*(uint64_t*)0x20000a38 = 0x27000);
  NONFAILING(*(uint64_t*)0x20000a40 = 0);
  NONFAILING(*(uint64_t*)0x20000a48 = 0);
  NONFAILING(*(uint64_t*)0x20000a50 = 0x27200);
  NONFAILING(*(uint64_t*)0x20000a58 = 0);
  NONFAILING(*(uint64_t*)0x20000a60 = 0);
  NONFAILING(*(uint64_t*)0x20000a68 = 0x27400);
  NONFAILING(*(uint64_t*)0x20000a70 = 0);
  NONFAILING(*(uint64_t*)0x20000a78 = 0);
  NONFAILING(*(uint64_t*)0x20000a80 = 0x27600);
  NONFAILING(*(uint64_t*)0x20000a88 = 0x20018900);
  NONFAILING(*(uint64_t*)0x20000a90 = 0);
  NONFAILING(*(uint64_t*)0x20000a98 = 0xf01000);
  NONFAILING(*(uint8_t*)0x20061000 = 0);
  NONFAILING(syz_mount_image(0x20000000, 0x20000100, 0, 0x5c, 0x20000200, 0,
                             0x20061000));
}
int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  setup_sysctl();
  setup_cgroups();
  setup_binfmt_misc();
  setup_802154();
  install_segv_handler();
  use_temporary_dir();
  do_sandbox_none();
  return 0;
}