// https://syzkaller.appspot.com/bug?id=f34aaaca22b6590b45be3c10114cf04f402cfdc0
// 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/swap.h>
#include <sys/syscall.h>
#include <sys/sysmacros.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/falloc.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/rfkill.h>
#include <linux/rtnetlink.h>
#include <linux/tcp.h>
#include <linux/veth.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif
#ifndef __NR_pwritev2
#define __NR_pwritev2 328
#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 correct_dev_net_tun(void)
{
  struct stat st;
  if (stat("/dev/net/tun", &st) == 0) {
    if (S_ISCHR(st.st_mode) && major(st.st_rdev) == 10 &&
        minor(st.st_rdev) == 200)
      return;
    if (unlink("/dev/net/tun")) {
    }
  }
  if (mkdir("/dev/net", 0755) && errno != EEXIST) {
  }
  if (mknod("/dev/net/tun", S_IFCHR | 0666, makedev(10, 200))) {
  }
  if (chmod("/dev/net/tun", 0666)) {
  }
}

static void initialize_tun(void)
{
  correct_dev_net_tun();
  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);
}

static int runcmdline(char* cmdline)
{
  int ret = system(cmdline);
  if (ret) {
  }
  return ret;
}

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 == EBADF || 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, max_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 void reset_loop_device(const char* loopname)
{
  int loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    return;
  }
  if (ioctl(loopfd, LOOP_CLR_FD, 0)) {
  }
  close(loopfd);
}

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, 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) {
    int loopfd;
    memset(loopname, 0, sizeof(loopname));
    snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
    if (setup_loop_device(data, size, loopname, &loopfd) == -1)
      return -1;
    close(loopfd);
    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");
  } else if (strncmp(fs, "gfs2", 4) == 0 &&
             (strstr(opts, "errors=panic") || strstr(opts, "debug"))) {
    strcat(opts, ",errors=withdraw");
  }
  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)
    reset_loop_device(loopname);
  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:
    case ENOENT:
      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:
    case ENOENT:
      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:
    case ENOENT:
      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:
    case ENOENT:
      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:
    case ENOENT:
      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:
    case ENOENT:
      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 setup_gadgetfs();
static void setup_binderfs();
static void setup_fusectl();
static void sandbox_common_mount_tmpfs(void)
{
  write_file("/proc/sys/fs/mount-max", "100000");
  if (mkdir("./syz-tmp", 0777))
    exit(1);
  if (mount("", "./syz-tmp", "tmpfs", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot", 0777))
    exit(1);
  if (mkdir("./syz-tmp/newroot/dev", 0700))
    exit(1);
  unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE;
  if (mount("/dev", "./syz-tmp/newroot/dev", NULL, bind_mount_flags, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/proc", 0700))
    exit(1);
  if (mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/selinux", 0700))
    exit(1);
  const char* selinux_path = "./syz-tmp/newroot/selinux";
  if (mount("/selinux", selinux_path, NULL, bind_mount_flags, NULL)) {
    if (errno != ENOENT)
      exit(1);
    if (mount("/sys/fs/selinux", selinux_path, NULL, bind_mount_flags, NULL) &&
        errno != ENOENT)
      exit(1);
  }
  if (mkdir("./syz-tmp/newroot/sys", 0700))
    exit(1);
  if (mount("/sys", "./syz-tmp/newroot/sys", 0, bind_mount_flags, NULL))
    exit(1);
  if (mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/proc/sys/fs/binfmt_misc",
            "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, bind_mount_flags,
            NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/newroot/syz-inputs", 0700))
    exit(1);
  if (mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL,
            bind_mount_flags | MS_RDONLY, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/pivot", 0777))
    exit(1);
  if (syscall(SYS_pivot_root, "./syz-tmp", "./syz-tmp/pivot")) {
    if (chdir("./syz-tmp"))
      exit(1);
  } else {
    if (chdir("/"))
      exit(1);
    if (umount2("./pivot", MNT_DETACH))
      exit(1);
  }
  if (chroot("./newroot"))
    exit(1);
  if (chdir("/"))
    exit(1);
  setup_gadgetfs();
  setup_binderfs();
  setup_fusectl();
}

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

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

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

static void loop();

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

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

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

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

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  int iter = 0;
  DIR* dp = 0;
  const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW;

retry:
  while (umount2(dir, umount_flags) == 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, umount_flags) == 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, umount_flags))
        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, umount_flags))
          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()
{
  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();
  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 const char* setup_binfmt_misc()
{
  if (mount(0, "/proc/sys/fs/binfmt_misc", "binfmt_misc", 0, 0) &&
      errno != EBUSY) {
    return NULL;
  }
  if (!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"))
    return "write(/proc/sys/fs/binfmt_misc/register) failed";
  return NULL;
}

static void setup_sysctl()
{
  int cad_pid = fork();
  if (cad_pid < 0)
    exit(1);
  if (cad_pid == 0) {
    for (;;)
      sleep(100);
  }
  char tmppid[32];
  snprintf(tmppid, sizeof(tmppid), "%d", cad_pid);
  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", tmppid},
  };
  for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
    if (!write_file(files[i].name, files[i].data)) {
    }
  }
  kill(cad_pid, SIGKILL);
  while (waitpid(cad_pid, NULL, 0) != cad_pid)
    ;
}

#define SWAP_FILE "./swap-file"
#define SWAP_FILE_SIZE (128 * 1000 * 1000)

static const char* setup_swap()
{
  swapoff(SWAP_FILE);
  unlink(SWAP_FILE);
  int fd = open(SWAP_FILE, O_CREAT | O_WRONLY | O_CLOEXEC, 0600);
  if (fd == -1)
    return "swap file open failed";
  fallocate(fd, FALLOC_FL_ZERO_RANGE, 0, SWAP_FILE_SIZE);
  close(fd);
  char cmdline[64];
  sprintf(cmdline, "mkswap %s", SWAP_FILE);
  if (runcmdline(cmdline))
    return "mkswap failed";
  if (swapon(SWAP_FILE, SWAP_FLAG_PREFER) == 1)
    return "swapon failed";
  return NULL;
}

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)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  int i, call, thread;
  for (call = 0; call < 5; 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);
      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 (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    //  syz_mount_image$exfat arguments: [
    //    fs: ptr[in, buffer] {
    //      buffer: {65 78 66 61 74 00} (length 0x6)
    //    }
    //    dir: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 32 00} (length 0x8)
    //    }
    //    flags: mount_flags = 0x1000000 (8 bytes)
    //    opts: ptr[inout, array[ANYUNION]] {
    //      array[ANYUNION] {
    //      }
    //    }
    //    chdir: int8 = 0xfd (1 bytes)
    //    size: len = 0x1507 (8 bytes)
    //    img: ptr[in, buffer] {
    //      buffer: (compressed buffer with length 0x1507)
    //    }
    //  ]
    //  returns fd_dir
    NONFAILING(memcpy((void*)0x200000000280, "exfat\000", 6));
    NONFAILING(memcpy((void*)0x200000001cc0, "./file2\000", 8));
    NONFAILING(memcpy(
        (void*)0x200000001d00,
        "\x78\x9c\xec\xdc\x09\xb8\x4f\x55\xf7\x38\xf0\xb5\xf6\xde\x87\xeb\x66"
        "\xf8\x26\x99\xcf\xda\xeb\xf0\x4d\x86\x6d\x48\x12\x4a\x92\x21\x49\x92"
        "\x90\xcc\x09\x49\x92\x24\x49\xe2\x92\x29\x09\x49\xc8\x78\x93\xcc\x21"
        "\x73\xba\xe9\x9a\xe7\x21\x73\xd2\xcd\x2b\x49\x92\x90\x90\x64\xff\x9f"
        "\xdb\xf0\xf7\xf6\x4e\xbd\xbf\xf7\xd7\xef\xaf\xff\xef\xae\xcf\xf3\x9c"
        "\xc7\x5e\xce\x59\xfb\xac\x7d\xd7\xf3\xbd\x67\x78\x9e\xfb\xfd\xaa\xdb"
        "\xf0\x1a\x8d\x6b\x56\x6d\xc0\xcc\xf0\x9f\xd0\xbf\x0e\xf0\xe7\x7f\x92"
        "\x00\x20\x01\x00\x06\x01\x40\x0e\x00\x08\x00\xa0\x5c\xce\x72\x39\xd3"
        "\xf7\x67\xd1\x98\xf4\x1f\x9d\x44\xfc\x0f\x69\x38\xf3\x4a\x57\x20\xae"
        "\x24\xe9\x7f\xc6\x26\xfd\xcf\xd8\xa4\xff\x19\x9b\xf4\x3f\x63\x93\xfe"
        "\x67\x6c\xd2\xff\x8c\x4d\xfa\x9f\xb1\x49\xff\x85\xc8\xd0\x66\xe7\xbb"
        "\x5a\xb6\x8c\xbb\xc9\xfb\xff\xff\xcf\xa9\xff\x4e\xb2\x5c\xff\x33\x04"
        "\xfc\x67\x3b\xa4\xff\xff\xdb\xe8\xff\xd2\xd1\xd2\xff\x8c\x4d\xfa\x9f"
        "\xb1\x49\xff\x33\x36\xe9\x7f\x46\x16\x5c\xe9\x02\xc4\x15\x26\x9f\xff"
        "\x8c\x4d\xfa\x2f\x44\x86\xf6\x87\xbf\x53\xde\x78\xfe\x5f\xec\xcf\x0c"
        "\x00\x57\xfc\x9d\xb7\x6c\x7f\xb5\x09\x21\x84\x10\x42\x08\x21\x84\x10"
        "\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08"
        "\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84"
        "\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42"
        "\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21"
        "\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10"
        "\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08"
        "\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84"
        "\x10\xff\x0f\x9c\xf7\x97\x19\x00\xf8\x75\x7c\xa5\xeb\x12\x42\x08\x21"
        "\x84\x10\x42\x08\x21\xc4\x1f\xc7\xbf\x73\xa5\x2b\x10\x42\x08\x21\x84"
        "\x10\x42\x08\x21\xc4\xff\x3c\x04\x05\x1a\x0c\x04\x90\x09\x32\x43\x02"
        "\x64\x81\x44\xb8\x0a\xb2\x42\x36\xc8\x0e\x39\x20\x06\x57\x43\x4e\xb8"
        "\x06\x72\xc1\xb5\x90\x1b\xf2\x40\x5e\xc8\x07\xf9\xa1\x00\x14\x84\x10"
        "\x08\x2c\x30\x44\x50\x08\x0a\x43\x1c\xae\x83\x22\x70\x3d\x14\x85\x62"
        "\x50\x1c\x4a\x80\x83\x92\x50\x0a\x4a\x43\x19\xb8\x01\xca\xc2\x8d\x50"
        "\x0e\x6e\x82\xf2\x70\x33\x54\x80\x8a\x3f\x9d\x33\xdd\x6d\x50\x05\x6e"
        "\x87\xaa\x70\x07\x54\x83\xea\x50\x03\x6a\xc2\x9d\x50\x0b\xee\x82\xda"
        "\x70\x37\xd4\x81\x7b\xa0\x2e\xdc\x0b\xf5\xe0\x3e\xa8\x0f\xf7\x43\x03"
        "\x68\x08\x8d\xe0\x01\x68\x0c\x0f\x42\x13\x68\x0a\xcd\xa0\x39\xb4\x80"
        "\x96\xd0\xea\x77\xf2\x93\x73\xfc\xa3\xfc\xe7\xa0\x27\x3c\x0f\xbd\xa0"
        "\x37\x24\x41\x1f\xe8\x0b\x2f\x40\x3f\xe8\x0f\x03\x60\x20\x0c\x82\x17"
        "\x61\x30\xbc\x04\x43\xe0\x65\x18\x0a\xc3\x60\x38\xbc\x02\x23\xe0\x55"
        "\x18\x09\xaf\xc1\x28\x18\x0d\x63\xe0\x75\x18\x0b\xe3\x60\x3c\x4c\x80"
        "\x89\x30\x09\x92\xe1\x0d\x98\x0c\x6f\xc2\x14\x78\xeb\xc1\x6c\x30\x0d"
        "\xa6\xc3\x0c\x98\x09\xb3\x60\x36\xbc\x0d\x73\x60\x2e\xcc\x83\x77\x60"
        "\x3e\x2c\x80\x85\x90\x9c\x65\x31\x2c\x81\xa5\xf0\x2e\x2c\x83\xf7\x20"
        "\x05\xde\x87\xe5\xf0\x01\xa4\xc2\x0a\x58\x09\xab\x60\x35\xac\x81\xb5"
        "\xb0\x0e\xd6\xc3\x06\xd8\x08\x9b\x60\x33\x6c\x81\xad\xb0\x0d\xb6\xc3"
        "\x87\xb0\x03\x76\xc2\x2e\xd8\x0d\x7b\x60\x2f\xec\x83\x8f\x60\x3f\x7c"
        "\x0c\x07\xe0\x13\x48\xc3\x4f\xff\x8b\xf9\xe7\x7e\x9b\x0f\xdd\x11\x10"
        "\x50\xa1\x42\x83\x06\x33\x61\x26\x4c\xc0\x04\x4c\xc4\x44\xcc\x8a\x59"
        "\x31\x3b\x66\xc7\x18\xc6\x30\x27\xe6\xc4\x5c\x98\x0b\x73\x63\x6e\xcc"
        "\x8b\x79\x31\x09\xf3\x63\x41\x2c\x88\x84\x84\x8c\x8c\x85\xb0\x10\xc6"
        "\x31\x8e\x45\xb0\x08\x16\xc5\xa2\x58\x1c\x8b\xa3\x43\x87\xa5\xb0\x14"
        "\x96\xc1\x1b\xb0\x2c\x96\xc5\x72\x58\x0e\xcb\x63\x79\xac\x80\x15\xb1"
        "\x22\xde\x82\xb7\x60\x65\xac\x8c\x55\xb0\x0a\x56\xc5\xaa\x58\x0d\xab"
        "\x61\x0d\xac\x81\x77\xe2\x9d\x78\x17\xd6\xc6\xda\x58\x07\xeb\x60\x5d"
        "\xac\x8b\xf5\xb0\x1e\xd6\xc7\xfa\xd8\x00\x1b\x60\x23\x6c\x84\x8d\xb1"
        "\x31\x36\xc1\x26\xd8\x0c\x9b\x61\x0b\x6c\x81\xad\xb0\x15\xb6\xc6\xd6"
        "\xd8\x06\xdb\x60\x3b\x6c\x87\xed\xb1\x3d\x76\xc0\x0e\xd8\x11\x3b\x62"
        "\x27\xec\x84\x9d\xb1\x33\x76\xc1\x2e\xd8\x15\xbb\x62\x37\xec\x86\xdd"
        "\xf1\x59\x7c\x16\x9f\xc3\xe7\xf0\x79\x7c\x1e\x7b\x63\x35\xd5\x07\xfb"
        "\x62\x5f\xec\x87\xfd\x70\x00\x0e\xc4\x81\xf8\x22\x0e\xc6\x97\xf0\x25"
        "\x7c\x19\x87\xe2\x30\x1c\x8e\xaf\xe0\x2b\xf8\x2a\x8e\xc4\xb3\x38\x0a"
        "\x47\xe3\x18\x1c\x83\x95\xd5\x38\x1c\x8f\x13\x90\xd5\x24\x4c\xc6\x64"
        "\xcc\x0c\x93\x71\x0a\x4e\xc1\xa9\x38\x0d\xa7\xe1\x0c\x9c\x89\xb3\x70"
        "\x36\xce\xc6\x39\x38\x17\xe7\xe2\x3b\x38\x1f\x17\xe0\x02\x5c\x84\x8b"
        "\x70\x09\x2e\xc5\xa5\xb8\x0c\xdf\xc3\x14\x4c\xc1\xe5\x78\x0e\x53\x71"
        "\x05\xae\xc4\x55\xb8\x1a\xd7\xe0\x6a\x5c\x87\xeb\x71\x1d\x6e\xc4\x4d"
        "\xb8\x11\xb7\xe0\x16\xdc\x86\xdb\xf0\x43\xfc\x10\x77\xe2\x4e\xdc\x8d"
        "\xbb\x71\x2f\xee\xc5\x8f\xf0\x23\xfc\x18\x3f\xc6\xa1\x98\x86\x69\x78"
        "\x10\x0f\xe2\x21\x3c\x84\x87\xf1\x30\x1e\xc1\x23\x78\x14\x8f\xe2\x31"
        "\x3c\x86\xc7\xf1\x38\x9e\xc0\x13\x78\x12\x4f\xe1\x69\x3c\x85\x67\xf0"
        "\x0c\x9e\xc5\x73\x78\x1e\x00\x2e\xe0\x05\xbc\x88\x17\xf1\x12\x5e\x4a"
        "\xff\xf0\xab\x74\x46\x19\x95\x49\x65\x52\x09\x2a\x41\x25\xaa\x44\x95"
        "\x55\x65\x55\xd9\x55\x76\x15\x53\x31\x95\x53\xe5\x54\xb9\x54\x2e\x95"
        "\x5b\xe5\x56\x79\x55\x5e\x95\x5f\xe5\x57\x05\x55\x41\x45\x8a\x14\xab"
        "\x48\x15\x52\x85\x54\x5c\xc5\x55\x11\x55\x44\x15\x55\x45\x55\x71\x55"
        "\x5c\x39\xe5\x54\x29\x55\x4a\x95\x51\x65\x54\x59\x55\x56\x95\x53\x37"
        "\xa9\xf2\xea\x66\x55\x41\x55\x54\x6d\xdd\x2d\xea\x16\x55\x59\xb5\x73"
        "\x55\xd4\xed\xaa\xaa\xaa\xaa\xaa\xa9\xea\xaa\x86\xaa\xa9\x6a\xaa\x5a"
        "\xaa\x96\xaa\xad\x6a\xab\x3a\xaa\x8e\xaa\xab\xea\xaa\x7a\xea\x3e\x55"
        "\x5f\xf5\xc1\x01\xd8\x50\xa5\x77\xa6\xb1\x1a\x86\x4d\xd4\x70\x6c\xa6"
        "\x9a\xab\x16\xaa\xa5\x7a\x15\x1f\x52\xad\xd5\x48\x6c\xa3\xda\xaa\x76"
        "\xea\x11\x35\x1a\x47\x61\x07\xd5\xda\x75\x54\x8f\xab\x4e\x6a\x3c\x76"
        "\x56\x4f\xaa\x09\xf8\x94\xea\xaa\x26\x61\x37\xf5\x8c\xea\xae\x9e\x55"
        "\x3d\xd4\x73\xaa\xa7\x6a\xe3\x7a\xa9\xde\x6a\x2a\xf6\x51\x7d\xd5\x0c"
        "\xec\xa7\xfa\xab\x01\x6a\xa0\x9a\x83\xd5\x55\x7a\xc7\x6a\xa8\x97\xd5"
        "\x73\x99\x87\xa9\xe1\xea\x15\xb5\x04\x5f\x55\x23\xd5\x6b\x6a\x94\x1a"
        "\xad\xc6\xa8\xd7\xd5\x58\x35\x4e\x8d\x57\x13\xd4\x44\x35\x49\x25\xab"
        "\x37\xd4\x64\xf5\xa6\x9a\xa2\xde\x52\x53\xd5\x34\x35\x5d\xcd\x50\x33"
        "\xd5\x2c\x35\x5b\xbd\xad\xe6\xa8\xb9\x6a\x9e\x7a\x47\xcd\x57\x0b\xd4"
        "\x42\xb5\x48\x2d\x56\x4b\xd4\x52\xf5\xae\x5a\xa6\xde\x53\x29\xea\x7d"
        "\xb5\x5c\x7d\xa0\x52\xd5\x0a\xb5\x52\xad\x52\xab\xd5\x1a\xb5\x56\xad"
        "\x53\xeb\xd5\x06\xb5\x51\x6d\x52\x9b\xd5\x16\xb5\x55\x6d\x53\xdb\xd5"
        "\x87\x6a\x87\xda\xa9\x76\xa9\xdd\x6a\x8f\xda\xab\xf6\xa9\x8f\xd4\x7e"
        "\xf5\xb1\x3a\xa0\x3e\x51\x69\xea\x53\x75\x50\xfd\x45\x1d\x52\x9f\xa9"
        "\xc3\xea\x73\x75\x44\x7d\xa1\x8e\xaa\x2f\xd5\x31\xf5\x95\x3a\xae\xbe"
        "\x56\x27\xd4\x37\xea\xa4\x3a\xa5\x4e\xab\x6f\xd5\x19\xf5\x9d\x3a\xab"
        "\xce\xa9\xf3\xea\x7b\x75\x41\xfd\xa0\x2e\xaa\x1f\xd5\x25\xe5\x15\x68"
        "\xd4\x4a\x6b\x6d\x74\xa0\x33\xe9\xcc\x3a\x41\x67\xd1\x89\xfa\x2a\x9d"
        "\x55\x67\xd3\xd9\x75\x0e\x1d\xd3\x57\xeb\x9c\xfa\x1a\x9d\x4b\x5f\xab"
        "\x73\xeb\x3c\x3a\xaf\xc9\xa7\xf3\xeb\x02\xba\xa0\x0e\x35\x69\xab\x59"
        "\x47\xba\x90\x2e\xac\xe3\xfa\x3a\x5d\x44\x5f\xaf\x8b\xea\x62\xba\xb8"
        "\x2e\xa1\x9d\x2e\xa9\x4b\xe9\xd2\xba\x8c\xbe\x41\x97\xd5\x37\xea\x72"
        "\xfa\x26\x5d\x5e\xdf\xac\x2b\xe8\x8a\xba\x92\x07\x7d\xab\xae\xac\x6f"
        "\xd3\x55\xf4\xed\xba\xaa\xbe\x43\x57\xd3\xd5\x75\x0d\x5d\x53\xdf\xa9"
        "\x6b\xe9\xbb\x74\x6d\x7d\xb7\xae\xa3\xef\xd1\x75\xf5\xbd\xba\x9e\xbe"
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        "\x6e\xaa\x9b\xe9\xe6\xba\x85\x6e\xa9\x5b\xe9\x87\x74\x6b\xfd\xb0\x6e"
        "\xa3\xdb\xea\x76\xfa\x11\xdd\x5e\x3f\xaa\x3b\xe8\xc7\x74\x47\xfd\xb8"
        "\xee\xa4\x9f\xd0\x9d\xf5\x93\xba\x8b\x7e\x4a\x77\xd5\x4f\xeb\x6e\xfa"
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        "\x9d\xa6\x0f\xea\x83\xfa\x90\x3e\xa4\x0f\xeb\xc3\xfa\x88\x3e\xa2\x8f"
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        "\x7b\xfd\xad\x3e\xa3\xbf\xd3\x67\xf5\x39\x7d\x4e\x7f\xaf\x2f\xe8\x0b"
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        "\xc9\x62\x12\xcd\x55\x26\xab\xc9\x66\xb2\x9b\x1c\x26\x66\xae\x36\x39"
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        "\x65\xc6\x98\x31\x66\xac\x19\x6b\xc6\x9b\xf1\x66\xa2\x99\x68\x92\x7d"
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        "\xcd\x4c\x33\xdb\xcc\x36\x73\xcc\x1c\x33\xcf\xcc\x33\xf3\xcd\x7c\xb3"
        "\xd0\x2c\x34\x8b\xcd\x62\xb3\xd4\x2c\x35\xcb\xcc\x32\x93\x62\x52\xcc"
        "\x72\xb3\xdc\xa4\x9a\x15\x66\x85\x59\x65\x56\x99\x35\x66\x8d\x59\x67"
        "\xd6\x99\x0d\x66\x83\xd9\x64\x36\x99\x2d\x66\x8b\x49\x35\xdb\xcd\x76"
        "\xb3\xc3\xec\x30\xbb\xcc\x2e\xb3\xc7\xec\x31\xfb\xcc\x3e\xb3\xdf\xec"
        "\x37\x07\xcc\x01\x93\x66\xd2\xcc\x41\x73\xd0\x1c\x32\x87\xcc\x61\x73"
        "\xd8\x1c\x31\x47\xcc\x51\x73\xd4\x1c\x33\xc7\xcc\x71\x73\xdc\x9c\x30"
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        "\xa8\xc0\x04\x26\xc8\x14\x64\x0a\x12\x82\x84\x20\x31\x48\x0c\xb2\x06"
        "\x59\x83\xec\x41\xf6\x20\x16\xc4\x82\x9c\x41\xce\x20\x57\x70\x6d\x90"
        "\x3b\xc8\x13\xe4\x0d\xf2\x05\xf9\x83\x02\x41\xc1\x20\x0c\x28\xb0\x01"
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        "\x50\x3c\x28\x11\xb8\xa0\x64\x50\x2a\x28\x1d\x94\x09\x6e\x08\xca\x06"
        "\x37\x06\xe5\x82\x9b\x82\xf2\xc1\xcd\x41\x85\xa0\x62\x50\x29\xb8\x25"
        "\xb8\x35\xa8\x1c\xdc\x16\x54\x09\x6e\x0f\xaa\x06\x77\x04\xd5\x82\xea"
        "\x41\x8d\xa0\x66\x70\x67\x50\x2b\xb8\x2b\xa8\x1d\xdc\x1d\xd4\x09\xee"
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        "\x28\x78\x20\x68\x1c\x3c\x18\x34\x09\x9a\x06\xcd\x82\xe6\x41\x8b\xa0"
        "\x65\xd0\xea\x0f\x9d\xdf\xfb\xb3\x79\x1e\x76\xbd\xc2\xde\x61\x52\xd8"
        "\x27\xec\x1b\xbe\x10\xf6\x0b\xfb\x87\x03\xc2\x81\xe1\xa0\xf0\xc5\x70"
        "\x70\xf8\x52\x38\x24\x7c\x39\x1c\x1a\x0e\x0b\x87\x87\xaf\x84\x23\xc2"
        "\x57\xc3\x91\xe1\x6b\xe1\xa8\x70\x74\x38\x26\x7c\x3d\x1c\x1b\x8e\x0b"
        "\xc7\x87\x13\xc2\x89\xe1\xa4\x30\x39\x7c\x23\x9c\x1c\xbe\x19\x4e\x09"
        "\xdf\x0a\xa7\x86\xd3\xc2\xe9\xc1\x8c\x70\x66\x38\x2b\x9c\x1d\xbe\x1d"
        "\xce\x09\xe7\x86\xf3\xc2\x77\xc2\xf9\xe1\x82\x70\x61\xb8\x28\x5c\x1c"
        "\x2e\x09\xf1\xe7\x5b\x62\x48\x09\xdf\x0f\x97\x87\x1f\x84\xa9\xe1\x8a"
        "\x70\x65\xb8\x2a\x5c\x1d\xae\x09\xd7\x86\xeb\xc2\xf5\xe1\x86\x70\x63"
        "\xb8\x29\xdc\x1c\x6e\x29\x37\xf8\xe7\x43\xc3\x1d\xe1\xce\x70\x57\xb8"
        "\x3b\xdc\x13\xee\x0d\xf7\x85\x1f\x85\xfb\xc3\x8f\xc3\x03\xe1\x27\x61"
        "\x5a\xf8\x69\x78\x30\xfc\x4b\x78\x28\xfc\x2c\x3c\x1c\x7e\x1e\x1e\x09"
        "\xbf\x08\x8f\x86\x5f\x86\xc7\xc2\xaf\xc2\xe3\xe1\xd7\xe1\x89\xf0\x9b"
        "\xf0\x64\x78\x2a\x3c\x1d\x7e\x1b\x9e\x09\xbf\x0b\xcf\x86\xe7\xc2\xf3"
        "\xe1\xf7\xe1\x85\xf0\x87\xf0\x62\xf8\x63\x78\x29\xf4\xe9\x37\xf7\xe9"
        "\x97\x77\x32\x64\x28\x13\x65\xa2\x04\x4a\xa0\x44\x4a\xa4\xac\x94\x95"
        "\xb2\x53\x76\x8a\x51\x8c\x72\x52\x4e\xca\x45\xb9\x28\x37\xe5\xa6\xbc"
        "\x94\x97\xf2\x53\x7e\x2a\x48\x05\x29\x1d\x13\x53\x21\x2a\x44\x71\x8a"
        "\x53\x11\x2a\x42\x45\xa9\x28\x15\xa7\xe2\xe4\xc8\x51\x29\x2a\x45\x65"
        "\xa8\x0c\x95\xa5\xb2\x54\x8e\xca\x51\x79\x2a\x4f\x15\xa8\x02\x55\xa2"
        "\x4a\x74\x2b\xdd\x4a\xb7\xd1\x6d\x74\x3b\xdd\x4e\x77\xd0\x1d\x54\x9d"
        "\xaa\x53\x4d\xaa\x49\xb5\xa8\x16\xd5\xa6\xda\x54\x87\xea\x50\x5d\xaa"
        "\x4b\xf5\xa8\x1e\xd5\xa7\xfa\xd4\x80\x1a\x50\x23\x6a\x44\x8d\xa9\x31"
        "\x35\xa1\x26\xd4\x8c\x9a\x51\x0b\x6a\x41\xad\xa8\x15\xb5\xa6\xd6\xd4"
        "\x86\xda\x50\x3b\x6a\x47\xed\xa9\x3d\x75\xa0\x0e\xd4\x91\x3a\x52\x27"
        "\xea\x44\x9d\xa9\x33\x75\xa1\x2e\xd4\x95\xba\x52\x37\xea\x46\xdd\xa9"
        "\x3b\xf5\xa0\x1e\xd4\x93\x7a\x52\x2f\xea\x45\x49\x94\x44\x7d\xa9\x2f"
        "\xf5\xa3\x7e\x34\x80\x06\xd0\x20\x1a\x44\x83\x69\x30\x0d\xa1\x21\x34"
        "\x94\x86\xd2\x70\x1a\x4e\x23\x68\x04\x8d\xa4\x91\x34\x8a\x46\xd3\x18"
        "\x7a\x9d\xc6\xd2\x38\x1a\x4f\x13\x68\x22\x4d\xa2\x64\x4a\xa6\xc9\x34"
        "\x99\xa6\xd0\x14\x9a\x4a\x53\x69\x3a\x4d\xa7\x99\x34\x93\x66\xd3\x6c"
        "\x9a\x43\x73\x68\x1e\xcd\xa3\xf9\x34\x9f\x16\xd2\x42\x5a\x4c\x8b\x69"
        "\x29\x2d\xa5\x65\xb4\x8c\x52\x28\x85\x96\xd3\x72\x4a\xa5\x54\x5a\x49"
        "\x2b\x69\x35\xad\xa6\xb5\xb4\x96\xd6\xd3\x7a\xda\x48\x1b\x69\x33\x6d"
        "\xa6\xad\xb4\x95\xb6\xd3\x76\xda\x41\x3b\x68\x17\xed\xa2\x3d\xb4\x87"
        "\xf6\xd1\x3e\xda\x4f\xfb\xe9\x00\x1d\xa0\x34\x4a\xa3\x83\x74\x90\x0e"
        "\xd1\x21\x3a\x4c\x87\xe9\x08\x1d\xa1\xa3\x74\x94\x8e\xd1\x31\x3a\x4e"
        "\xc7\xe9\x04\x9d\xa0\x93\x74\x92\x4e\xd3\x69\x3a\x43\x67\xe8\x2c\x9d"
        "\xa5\xf3\x74\x9e\x2e\xd0\x0f\x74\x91\x7e\xa4\x4b\xe4\x29\xc1\x66\xb1"
        "\x89\xf6\x2a\x9b\xd5\x66\xb3\xd9\x6d\x0e\xfb\xb7\x71\x5e\x9b\xcf\xe6"
        "\xb7\x05\x6c\x41\x1b\xda\xdc\x36\xcf\x6f\x62\xb2\xd6\x16\xb5\xc5\x6c"
        "\x71\x5b\xc2\x3a\x5b\xd2\x96\xb2\xa5\xff\x2e\xae\x60\x2b\xda\x4a\xf6"
        "\x16\x7b\xab\xad\x6c\x6f\xb3\x55\x6c\x05\x9b\x05\xfe\x3a\xae\x65\xef"
        "\xb2\xb5\xed\xdd\xb6\x8e\xbd\xc7\xd6\xb4\x77\xfe\x26\xae\x6b\xef\xb5"
        "\xf5\xec\x83\xb6\xbe\x6d\x6a\x1b\xd8\xe6\xb6\x91\x6d\x69\x1b\xdb\x07"
        "\x6d\x13\xdb\xd4\x36\xb3\xcd\x6d\x0b\xdb\xd2\xb6\xb7\x8f\xda\x0e\xf6"
        "\x31\xdb\xd1\x3e\x6e\x3b\xd9\x27\xfe\x2e\x5e\x66\xdf\xb3\xeb\xed\x06"
        "\xbb\xd1\x6e\xb2\xfb\xed\xc7\xf6\xbc\xfd\xde\x1e\xb3\x5f\xd9\x0b\xf6"
        "\x07\xdb\xcb\xf6\xb6\x83\xec\x8b\x76\xb0\x7d\xc9\x0e\xb1\x2f\xdb\xa1"
        "\x76\xd8\x6f\x63\x00\x3b\xc6\xbe\x6e\xc7\xda\x71\x76\xbc\x9d\x60\x27"
        "\xda\x49\x7f\x17\x4f\xb7\x33\xec\x4c\x3b\xcb\xce\xb6\x6f\xdb\x39\x76"
        "\xee\xdf\xc5\x4b\xed\xbb\x76\xbe\x4d\xb1\x0b\xed\x22\xbb\xd8\x2e\xf9"
        "\x29\x4e\xaf\x29\xc5\xbe\x6f\x97\xdb\x0f\x6c\xaa\x5d\x61\x57\xda\x55"
        "\x76\xb5\x5d\x63\xd7\xda\x75\xff\xb7\xd6\x55\x76\x8b\xdd\x6a\xb7\xd9"
        "\x7d\xf6\x23\xbb\xc3\xee\xb4\xbb\xec\x6e\xbb\xc7\xee\xfd\x29\x4e\x5f"
        "\xc7\x01\xfb\x89\x4d\xb3\x9f\xda\xa3\xf6\x4b\x7b\xc8\x7e\x66\x0f\xdb"
        "\xe3\xf6\x88\xfd\xe2\xa7\x38\x7d\x7d\xc7\xed\xd7\xf6\x84\xfd\xc6\x9e"
        "\xb4\xa7\xec\x69\xfb\xad\x3d\x63\xbf\xb3\x67\xed\xb9\x9f\xd6\x9f\xbe"
        "\xf6\x6f\xed\x8f\xf6\x92\xf5\x16\x18\x59\xb1\x66\xc3\x01\x67\xe2\xcc"
        "\x9c\xc0\x59\x38\x91\xaf\xe2\xac\x9c\x8d\xb3\x73\x0e\x8e\xf1\xd5\x9c"
        "\x93\xaf\xe1\x5c\x7c\x2d\xe7\xe6\x3c\x9c\x97\xf3\x71\x7e\x2e\xc0\x05"
        "\x39\x64\x62\xcb\xcc\x11\x17\xe2\xc2\x1c\xe7\xeb\xb8\x08\x5f\xcf\x45"
        "\xb9\x18\x17\xe7\x12\xec\xb8\x24\x97\xe2\xd2\x5c\x86\x6f\xe0\xb2\x7c"
        "\x23\x97\xe3\x9b\xb8\x3c\xdf\xcc\x15\xb8\x22\x57\xe2\x5b\xf8\x56\xae"
        "\xcc\xb7\x71\x15\xbe\x9d\xab\xf2\x1d\x5c\x8d\xab\x73\x0d\xae\xc9\x77"
        "\x72\x2d\xbe\x8b\x6b\xf3\xdd\x5c\x87\xef\xe1\xba\x7c\x2f\xd7\xe3\xfb"
        "\xb8\x3e\xdf\xcf\x0d\xb8\x21\x37\xe2\x07\xb8\x31\x3f\xc8\x4d\xb8\x29"
        "\x37\xe3\xe6\xdc\x82\x5b\x72\x2b\x7e\x88\x5b\xf3\xc3\xdc\x86\xdb\x72"
        "\x3b\x7e\x84\xdb\xf3\xa3\xdc\x81\x1f\xe3\x8e\xfc\x38\x77\xe2\x27\xb8"
        "\x33\x3f\xc9\x5d\xf8\x29\xee\xca\x4f\x73\x37\x7e\x86\xbb\xf3\xb3\xdc"
        "\x83\x9f\xe3\x9e\xfc\x3c\xf7\xe2\xde\x9c\xc4\x7d\xb8\x2f\xbf\xc0\xfd"
        "\xb8\x3f\x0f\xe0\x81\x3c\x88\x5f\xe4\xc1\xfc\x12\x0f\xe1\x97\x79\x28"
        "\x0f\xe3\xe1\xfc\x0a\x8f\xe0\x57\x79\x24\xbf\xc6\xa3\x78\x34\x8f\xe1"
        "\xd7\x79\x2c\x8f\xe3\xf1\x3c\x81\x27\xf2\x24\x4e\xe6\x37\x78\x32\xbf"
        "\xc9\x53\xf8\x2d\x9e\xca\xd3\x78\x3a\xcf\xe0\x99\x3c\x8b\x67\xf3\xdb"
        "\x3c\x87\xe7\xf2\x3c\x7e\x87\xe7\xf3\x02\x5e\xc8\x8b\x78\x31\x2f\xe1"
        "\xa5\xfc\x2e\x2f\xe3\xf7\x38\x85\xdf\xe7\xe5\xfc\x01\xa7\xf2\x0a\x5e"
        "\xc9\xab\x78\x35\xaf\xe1\xb5\xbc\x8e\xd7\xf3\x06\xde\xc8\x9b\x78\x33"
        "\x6f\xe1\xad\xbc\x8d\xb7\xf3\x87\xbc\x83\x77\xf2\x2e\xde\xcd\x7b\x78"
        "\x2f\xef\xe3\x8f\x78\x3f\x7f\xcc\x07\xf8\x13\x4e\xe3\x4f\xf9\x20\xff"
        "\x85\x0f\xf1\x67\x7c\x98\x3f\xe7\x23\xfc\x05\x1f\xe5\x2f\xf9\x18\x7f"
        "\xc5\xc7\xf9\x6b\x3e\xc1\xdf\xf0\x49\x3e\xc5\xa7\xf9\x5b\x3e\xc3\xdf"
        "\xf1\x59\x3e\xc7\xe7\xf9\x7b\xbe\xc0\x3f\xf0\x45\xfe\x91\x2f\xb1\x67"
        "\x88\x30\x52\x91\x8e\x4c\x14\x44\x99\xa2\xcc\x51\x42\x94\x25\x4a\x8c"
        "\xae\x8a\xb2\x46\xd9\xa2\xec\x51\x8e\x28\x16\x5d\x1d\xe5\x8c\xae\x89"
        "\x72\x45\xd7\x46\xb9\xa3\x3c\x51\xde\x28\x5f\x94\x3f\x2a\x10\x15\x8c"
        "\xc2\x88\x22\x1b\x71\x14\x45\x85\xa2\xc2\x51\x3c\xba\x2e\x2a\x12\x5d"
        "\x1f\x15\x8d\x8a\x45\xc5\xa3\x12\x91\x8b\x4a\x46\xa5\xa2\xd2\x51\x99"
        "\xe8\x86\xa8\x6c\x74\x63\x54\x2e\xba\x29\x2a\x1f\xdd\x1c\x55\x88\x2a"
        "\x46\x95\xa2\x5b\xa2\x5b\xa3\xca\xd1\x6d\x51\x95\xe8\xf6\xa8\x6a\x74"
        "\x47\x54\x2d\xaa\x1e\xd5\x88\x6a\x46\x77\x46\xb5\xa2\xbb\xa2\xda\xd1"
        "\xdd\x51\x9d\xe8\x9e\xa8\x6c\x74\x6f\x54\x2f\xba\x2f\xaa\x1f\xdd\x1f"
        "\x35\x88\x1a\x46\x8d\xa2\x07\xa2\xc6\xd1\x83\x51\x93\xa8\x69\xd4\x2c"
        "\x6a\x1e\xb5\x88\x5a\x46\xad\xa2\x87\xa2\xd6\xd1\xc3\x51\x9b\xa8\x6d"
        "\xd4\x2e\x7a\x24\x6a\x1f\x3d\x1a\x75\x88\x1e\x8b\x3a\x46\x8f\x47\x9d"
        "\xa2\x27\x2e\xef\x2f\x16\xfc\x7c\x35\xfd\x9b\xfd\x49\x51\x9f\x48\xff"
        "\xf2\x86\xec\x6e\xbd\x38\xbe\x24\xbe\x34\xfe\x6e\x7c\x59\xfc\xbd\x78"
        "\x4a\xfc\xfd\xf8\xf2\xf8\x07\xf1\xd4\xf8\x8a\xf8\xca\xf8\xaa\xf8\xea"
        "\xf8\x9a\xf8\xda\xf8\xba\xf8\xfa\xf8\x86\xf8\xc6\xf8\xa6\xf8\xe6\xf8"
        "\x96\xf8\xd6\xf8\xb6\xb8\xf7\x35\x33\x83\xc3\xf4\x07\x61\x30\x2e\x70"
        "\x99\x5c\x66\x97\xe0\xb2\xb8\x44\x77\x95\xcb\xea\xb2\xb9\xec\x2e\x87"
        "\x8b\xb9\xab\x5d\x4e\x77\x8d\xcb\xe5\xae\x75\xb9\x5d\x1e\x97\xd7\xe5"
        "\x73\xf9\x5d\x01\x57\xd0\x85\x8e\x9c\x75\xec\x22\x57\xc8\x15\x76\x71"
        "\x77\x9d\x2b\xe2\xae\x77\x45\x5d\x31\x57\xdc\x95\x70\xce\x95\x74\xa5"
        "\x5c\x4b\xd7\xca\xb5\x72\xad\xdd\xc3\xae\x8d\x6b\xeb\xda\xb9\x47\xdc"
        "\x23\xee\x51\xf7\xa8\x7b\x2c\xe1\x97\xc2\x5d\x67\xf7\xa4\xeb\xe2\x9e"
        "\x72\x5d\xdd\xd3\xee\x69\xf7\x8c\xeb\xee\x9e\x75\x3d\xdc\x73\xae\xa7"
        "\x7b\xde\xf5\x72\xbd\x5d\x92\x4b\x72\x7d\x5d\x5f\xd7\xcf\xf5\x73\x03"
        "\xdc\x00\x37\xc8\x0d\x72\x83\xdd\x60\x37\xc4\x0d\x71\x43\xdd\x50\x37"
        "\xdc\x0d\x07\x70\x23\xdc\x48\x37\xd2\x8d\x72\xa3\xdc\x18\x37\xc6\x8d"
        "\x75\x63\xdd\x78\x37\xde\x4d\x74\x13\x5d\xb2\x4b\x76\x93\xdd\x64\x37"
        "\xc5\x4d\x71\x53\xdd\x54\x37\xdd\x4d\x77\x33\xdd\x4c\x37\xdb\xcd\x76"
        "\x73\xdc\x1c\x37\xcf\xcd\x73\xf3\xdd\x7c\xb7\xd0\x2d\x74\x8b\xdd\x62"
        "\xb7\xd4\x2d\x75\xcb\xdc\x32\x97\xe2\x52\xdc\x72\xb7\xdc\xa5\xba\x54"
        "\xb7\xd2\xad\x74\xab\xdd\x6a\xb7\xd6\xad\x75\xeb\xdd\x7a\xb7\xd1\x6d"
        "\x74\x9b\xdd\x66\xb7\xd5\x6d\x75\xdb\xdd\x76\xb7\xc3\xed\x70\xbb\xdc"
        "\x2e\xb7\xc7\xed\x71\xfb\xdc\x3e\xb7\xdf\xed\x77\x07\xdc\x01\x97\xe6"
        "\xd2\xdc\x41\x77\xd0\x1d\x72\x87\xdc\x61\xf7\xb9\x3b\xe2\xbe\x70\x47"
        "\xdd\x97\xee\x98\xfb\xca\x1d\x77\x5f\xbb\x13\xee\x1b\x77\xd2\x9d\x72"
        "\xa7\x9d\xd7\x67\xdc\x77\xee\xac\x3b\xe7\xce\xbb\xef\xdd\x05\xf7\x83"
        "\xbb\xe8\x7e\x74\x97\x9c\x77\xc9\xb1\x37\x62\x93\x63\x6f\xc6\xa6\xc4"
        "\xde\x8a\x4d\x8d\x4d\x8b\x4d\x8f\xcd\x88\xcd\x8c\xcd\x8a\xcd\x8e\xbd"
        "\x1d\x9b\x13\x9b\x1b\x9b\x17\x7b\x27\x36\x3f\xb6\x20\xb6\x30\xb6\x28"
        "\xb6\x38\xb6\x24\xb6\x34\xf6\x6e\x6c\x59\xec\xbd\x58\x4a\xec\xfd\xd8"
        "\xf2\xd8\x07\xb1\xd4\xd8\x8a\xd8\xca\xd8\xaa\xd8\xea\xd8\x9a\x98\xf7"
        "\x05\x76\x44\xbe\x90\x2f\xec\xe3\xfe\x3a\x5f\xc4\x5f\xef\x8b\xfa\x62"
        "\xbe\xb8\x2f\xe1\x9d\x2f\xe9\x4b\xf9\xd2\xbe\x8c\xbf\xc1\x97\xf5\x37"
        "\xfa\x72\xfe\x26\x5f\xde\xdf\xec\x2b\xf8\x8a\xbe\x92\x6f\xea\x9b\xf9"
        "\xe6\xbe\x85\x6f\xe9\x5b\xf9\x87\x7c\x6b\xff\xb0\x6f\xe3\xdb\xfa\x76"
        "\xfe\x11\xdf\xde\x3f\xea\x3b\xf8\xc7\x7c\x47\xff\xb8\xef\xe4\x9f\xf0"
        "\x9d\xfd\x93\xbe\x8b\x7f\xca\x77\xf5\x4f\xfb\x6e\xfe\x99\x05\xbf\x74"
        "\xd9\xf7\xf4\xcf\xfb\x5e\xbe\xb7\x4f\xf2\x7d\x7c\x5f\xff\x82\xef\xe7"
        "\xfb\xfb\x01\x7e\xa0\x1f\xe4\x5f\xf4\x83\xfd\x4b\x7e\x88\x7f\xd9\x0f"
        "\xf5\xc3\xfc\x70\xff\x8a\x1f\xe1\x5f\xf5\x23\xfd\x6b\x7e\x94\x1f\xed"
        "\xc7\xf8\xd7\xfd\x58\x3f\xce\x8f\xf7\x13\xfc\x44\x3f\xc9\x27\xfb\x37"
        "\xfc\x64\xff\xa6\x9f\xe2\xdf\xf2\x53\xfd\x34\x3f\xdd\xcf\xf0\x33\xfd"
        "\x2c\x3f\xdb\xbf\xed\xe7\xf8\xb9\x7e\x9e\x7f\xc7\xcf\xf7\x0b\xfc\x42"
        "\xbf\xc8\x2f\xf6\x4b\xfc\x52\xff\xae\x5f\xe6\xdf\xf3\x29\xfe\x7d\xbf"
        "\xdc\x7f\xe0\x53\xfd\x0a\xbf\xd2\xaf\xf2\xab\xfd\x1a\xbf\xd6\xaf\xf3"
        "\xeb\xfd\x06\xbf\xd1\x6f\xf2\x9b\xfd\x16\xbf\xd5\x6f\xf3\xdb\xfd\x87"
        "\x7e\x87\xdf\xe9\x77\xf9\xdd\x7e\x8f\xdf\xeb\xf7\xf9\x8f\xfc\x7e\xff"
        "\xb1\x3f\xe0\x3f\xf1\x69\xfe\x53\x7f\xd0\xff\xc5\x1f\xf2\x9f\xf9\xc3"
        "\xfe\x73\x7f\xc4\x7f\xe1\x8f\xfa\x2f\xfd\x31\xff\x95\x3f\xee\xbf\xf6"
        "\x27\xfc\x37\xfe\xa4\x3f\xe5\x4f\xfb\x6f\xfd\x19\xff\x9d\x3f\xeb\xcf"
        "\xf9\xf3\xfe\x7b\x7f\xc1\xff\xe0\x2f\xfa\x1f\xfd\x25\xf9\x9b\x35\x21"
        "\x84\x10\x42\x88\x7f\x8b\xfe\x9d\xfd\x7d\xfe\xc1\xff\xa9\x5f\xb6\x74"
        "\x7d\x01\x20\xdb\xce\x7c\x47\xfe\x76\xce\xcd\xb9\x7f\x1e\xf7\x57\xfb"
        "\x3b\xc5\x00\xe0\xf1\xde\xdd\x1a\xfe\xba\x35\x6c\x98\x94\x94\xf4\xcb"
        "\xb1\xa9\x1a\x82\xc2\x8b\x00\x20\x76\x39\xff\xa7\xef\x1f\xf8\x25\x5e"
        "\x01\xed\xe0\x51\xe8\x08\x6d\xa1\xcc\x3f\xac\xaf\xbf\xaa\xf4\xd3\x7d"
        "\xdf\xbf\x9a\x3f\x7e\x13\x40\x22\x40\x96\x5f\x73\xd2\x1f\x8f\x12\xe1"
        "\x6f\xe7\xbf\xe1\x9f\xcc\xdf\xf4\x5d\xfe\xbd\xf9\x17\x01\x14\x2d\x7c"
        "\x39\x27\xfd\x44\xbf\xc6\x97\xe7\x2f\xfb\x4f\xe6\xdf\xdb\xfe\x77\xe6"
        "\xcf\xf2\x59\x32\x40\x9b\xbf\xca\xc9\x0a\x97\xe3\xcb\xf3\x97\x82\x87"
        "\xe1\x09\xe8\xf8\x9b\x23\x85\x10\x42\x08\x21\x84\x10\x42\x88\x9f\xf5"
        "\x57\x17\xba\xff\xde\xf3\x6d\xfa\xf3\x79\x7e\x73\x39\x27\x33\x5c\x8e"
        "\x7f\xef\xf9\xfc\x77\x54\xf9\x23\xd6\x20\x84\x10\x42\x08\x21\x84\x10"
        "\x42\x88\x7f\xed\xa9\x67\x7b\x3c\xf6\x50\xc7\x8e\x6d\xbb\xfc\x6f\x1e"
        "\x64\xfe\x73\x94\xf1\x27\x18\x20\x00\xfc\x09\xca\x90\xc1\x9f\x7f\x70"
        "\xa5\x7f\x33\x09\x21\x84\x10\x42\x08\x21\xfe\x68\x97\x6f\xfa\xaf\x74"
        "\x25\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42"
        "\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21"
        "\x84\x10\x42\x08\x21\x44\xc6\xf5\x9f\x7f\x43\x98\xfa\xb7\x0f\xbe\xd2"
        "\x6b\x14\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10"
        "\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08"
        "\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\xae"
        "\xb4\xff\x13\x00\x00\xff\xff\x56\xbc\x54\x44",
        5383));
    NONFAILING(syz_mount_image(/*fs=*/0x200000000280, /*dir=*/0x200000001cc0,
                               /*flags=MS_STRICTATIME*/ 0x1000000,
                               /*opts=*/0x2000000018c0, /*chdir=*/0xfd,
                               /*size=*/0x1507, /*img=*/0x200000001d00));
    break;
  case 1:
    //  open arguments: [
    //    file: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 32 00} (length 0x8)
    //    }
    //    flags: open_flags = 0x24842 (8 bytes)
    //    mode: open_mode = 0x80 (8 bytes)
    //  ]
    //  returns fd
    NONFAILING(memcpy((void*)0x2000000000c0, "./file2\000", 8));
    res = syscall(
        __NR_open, /*file=*/0x2000000000c0ul,
        /*flags=O_NONBLOCK|O_NOFOLLOW|O_DIRECT|O_CREAT|O_RDWR*/ 0x24842ul,
        /*mode=S_IWUSR*/ 0x80ul);
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    //  pwritev2 arguments: [
    //    fd: fd (resource)
    //    vec: ptr[in, array[iovec[in, array[int8]]]] {
    //      array[iovec[in, array[int8]]] {
    //        iovec[in, array[int8]] {
    //          addr: ptr[in, buffer] {
    //            buffer: {85} (length 0x1)
    //          }
    //          len: len = 0xfffffdd6 (8 bytes)
    //        }
    //      }
    //    }
    //    vlen: len = 0x1 (8 bytes)
    //    off_low: int32 = 0x9c00 (4 bytes)
    //    off_high: int32 = 0x0 (4 bytes)
    //    flags: rwf_flags = 0x3 (8 bytes)
    //  ]
    NONFAILING(*(uint64_t*)0x200000000240 = 0x200000000000);
    NONFAILING(memset((void*)0x200000000000, 133, 1));
    NONFAILING(*(uint64_t*)0x200000000248 = 0xfffffdd6);
    syscall(__NR_pwritev2, /*fd=*/r[0], /*vec=*/0x200000000240ul, /*vlen=*/1ul,
            /*off_low=*/0x9c00, /*off_high=*/0,
            /*flags=RWF_HIPRI|RWF_DSYNC*/ 3ul);
    break;
  case 3:
    //  openat arguments: [
    //    fd: fd_dir (resource)
    //    file: ptr[in, buffer] {
    //      buffer: {2e 00} (length 0x2)
    //    }
    //    flags: open_flags = 0x100 (4 bytes)
    //    mode: open_mode = 0x52 (2 bytes)
    //  ]
    //  returns fd
    NONFAILING(memcpy((void*)0x200000000140, ".\000", 2));
    res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000140ul,
                  /*flags=O_NOCTTY*/ 0x100,
                  /*mode=S_IWOTH|S_IWGRP|S_IXUSR*/ 0x52);
    if (res != -1)
      r[1] = res;
    break;
  case 4:
    //  ioctl$FS_IOC_REMOVE_ENCRYPTION_KEY arguments: [
    //    fd: fd_dir (resource)
    //    cmd: const = 0x8004587d (4 bytes)
    //    arg: ptr[inout, fscrypt_remove_key_arg] {
    //      fscrypt_remove_key_arg {
    //        key_spec: union fscrypt_key_specifier {
    //          desc: fscrypt_key_specifier__by_descriptor {
    //            type: const = 0x1 (4 bytes)
    //            reserved: const = 0x0 (4 bytes)
    //            descriptor: union fscrypt_key_descriptor {
    //              desc3: buffer: {e8 da b9 92 34 bb 31 2e} (length 0x8)
    //            }
    //            reserved2: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //            00 00 00 00 00 00 00 00 00 00} (length 0x18)
    //          }
    //        }
    //        removal_status_flags: int32 = 0x0 (4 bytes)
    //        reserved: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //        00 00 00 00} (length 0x14)
    //      }
    //    }
    //  ]
    NONFAILING(*(uint32_t*)0x200000000080 = 1);
    NONFAILING(*(uint32_t*)0x200000000084 = 0);
    NONFAILING(memcpy((void*)0x200000000088, "\350\332\271\2224\2731.", 8));
    NONFAILING(memset((void*)0x200000000090, 0, 24));
    NONFAILING(memset((void*)0x2000000000ac, 0, 20));
    syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x8004587d,
            /*arg=*/0x200000000080ul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  setup_sysctl();
  const char* reason;
  (void)reason;
  if ((reason = setup_binfmt_misc()))
    printf("the reproducer may not work as expected: binfmt_misc setup failed: "
           "%s\n",
           reason);
  if ((reason = setup_swap()))
    printf("the reproducer may not work as expected: swap setup failed: %s\n",
           reason);
  install_segv_handler();
  use_temporary_dir();
  do_sandbox_none();
  return 0;
}