// https://syzkaller.appspot.com/bug?id=41498cc1c55125e5e037a975e1e96257e6332fb4
// 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/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/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/rtnetlink.h>
#include <linux/tcp.h>
#include <linux/veth.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

static unsigned long long procid;

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

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

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

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

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

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

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

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

typedef struct {
  int state;
} event_t;

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

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

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

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

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

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

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

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

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

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

static 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 unsigned int queue_count = 2;

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

static void netlink_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

//% 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_RDONLY);
  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) {
    if (chdir(target) == -1) {
      err = errno;
      close(res);
      res = -1;
    }
  }

error_clear_loop:
  if (need_loop_device)
    reset_loop_device(loopname);
  errno = err;
  return res;
}

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

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);
}

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

static const char* setup_802154()
{
  const char* error = NULL;
  int sock_generic = -1;
  int sock_route = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock_route == -1) {
    error = "socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) failed";
    goto fail;
  }
  sock_generic = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
  if (sock_generic == -1) {
    error = "socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) failed";
    goto fail;
  }
  {
    int nl802154_family_id =
        netlink_query_family_id(&nlmsg, sock_generic, "nl802154", true);
    if (nl802154_family_id < 0) {
      error = "netlink_query_family_id failed";
      goto fail;
    }
    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));
      if (netlink_send(&nlmsg, sock_generic) < 0) {
        error = "NL802154_CMD_SET_SHORT_ADDR failed";
        goto fail;
      }
      netlink_device_change(&nlmsg, sock_route, devname, true, 0, &hwaddr,
                            sizeof(hwaddr), 0);
      if (i == 0) {
        netlink_add_device_impl(&nlmsg, "lowpan", "lowpan0", false);
        netlink_done(&nlmsg);
        netlink_attr(&nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex));
        if (netlink_send(&nlmsg, sock_route) < 0) {
          error = "netlink: adding device lowpan0 type lowpan link wpan0";
          goto fail;
        }
      }
    }
  }
fail:
  close(sock_route);
  close(sock_generic);
  return error;
}

#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) +
                                     (call == 2 ? 4000 : 0) +
                                     (call == 4 ? 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)
{
  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);
  }
}

void execute_call(int call)
{
  switch (call) {
  case 0:
    //  syz_mount_image$udf arguments: [
    //    fs: ptr[in, buffer] {
    //      buffer: {75 64 66 00} (length 0x4)
    //    }
    //    dir: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
    //    }
    //    flags: mount_flags = 0x0 (8 bytes)
    //    opts: ptr[inout, array[ANYUNION]] {
    //      array[ANYUNION] {
    //        union ANYUNION {
    //          ANYBLOB: buffer: {6e 6f 61 64 69 6e 69 63 62 2c 6e 6f 73 74 72
    //          69 63 74 2c 6d 6f 64 65 3d 30 30 30 30 30 30 30 30 30 30 30 30
    //          30 30 30 30 30 30 30 30 30 30 34 2c 75 69 64 3d 66 6f 72 67 65
    //          74 2c 6e 6f 61 64 69 6e 69 63 62 2c 75 6d 61 73 6b 3d 30 30 30
    //          30 30 30 30 30 30 30 30 30 30 30 30 34 30 30 30 32 30 30 30 2c
    //          6c 61 73 74 62 6c 6f 63 6b 3d 30 30 30 30 30 30 30 30 30 30 30
    //          30 30 30 30 30 30 30 31 33 2c 75 6e 64 65 6c 65 74 65 2c 70 61
    //          72 74 69 74 69 6f 6e 3d 30 30 30 30 30 30 30 30 30 30 30 30 30
    //          30 30 30 30 30 30 35 2c 00} (length 0xab)
    //        }
    //        union ANYUNION {
    //          ANYRES16: ANYRES16 (resource)
    //        }
    //      }
    //    }
    //    chdir: int8 = 0x47 (1 bytes)
    //    size: len = 0xc15 (8 bytes)
    //    img: ptr[in, buffer] {
    //      buffer: (compressed buffer with length 0xc15)
    //    }
    //  ]
    //  returns fd_dir
    NONFAILING(memcpy((void*)0x200000000c40, "udf\000", 4));
    NONFAILING(memcpy((void*)0x2000000000c0, "./file1\000", 8));
    NONFAILING(memcpy(
        (void*)0x200000000180,
        "noadinicb,nostrict,mode=00000000000000000000004,uid=forget,noadinicb,"
        "umask=00000000000000040002000,lastblock=00000000000000000013,undelete,"
        "partition=00000000000000000005,\000",
        171));
    NONFAILING(*(uint16_t*)0x20000000022b = 0);
    NONFAILING(memcpy(
        (void*)0x200000001940,
        "\x78\x9c\xec\xdd\x5d\x6c\x64\xe7\x59\x07\xf0\xe7\x9d\x63\xc7\x63\xa7"
        "\xb4\x4e\xd3\x6e\x5a\x68\xca\x48\x45\xed\xca\x65\xa3\xfd\xea\xae\xab"
        "\x45\x95\xb7\x71\x0d\x95\xb6\x9b\xaa\x5e\x57\xe4\xaa\x1e\x7f\xec\x76"
        "\x14\xef\x78\x65\x7b\xe9\xa6\x40\x65\x40\x05\x89\x9b\x8a\xdc\x20\x6e"
        "\x90\x45\x89\x40\xea\x05\x57\x84\x4b\x5c\x1a\xa4\x56\x08\x09\x55\xbd"
        "\x28\x17\x48\x96\x68\xa3\x5c\x70\xe1\x8b\x4a\x08\x50\x6a\x74\xce\xbc"
        "\x63\x8f\x77\xbd\x59\x37\x1b\x7f\x6c\xf2\xfb\x45\xce\xff\xcc\x99\xe7"
        "\x8c\xdf\x8f\xf1\x99\x63\x69\x5f\x9f\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\x22\x3e\xfb\xb9\xcb\xa7\xcf\xa4\xa3\x6e"
        "\x05\x00\x70\x98\xae\x4e\x7e\xe9\xf4\x39\x9f\xff\x00\xf0\xae\x72\xcd"
        "\xef\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x70\xdc\xa5\x28"
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        "\x7c\xae\x1b\xfe\x95\xb2\x6e\x75\x57\x55\x7d\x64\x6a\x7c\xa2\x71\x75"
        "\xb1\x7d\xea\xf2\xc2\xc2\xe2\x6c\x73\xa5\x39\xb3\x30\xdf\x98\xbc\xd5"
        "\x9c\xdd\xf7\x1f\x0e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x80\x37\x31\x94\x8a\xf8\x51\xa4\xf8\xaf\xbf\xfd\xb7\xd4"
        "\xbd\xef\x7c\x5e\xff\xdf\xd7\x79\xd4\xb3\xfe\xff\x37\xaa\x25\xf4\x95"
        "\x7a\xda\x9d\xdb\xaa\xb5\xfd\xef\xad\xd6\xf6\x77\xb6\xdf\x77\x69\x74"
        "\xe8\xa3\x4f\xdf\x6f\xff\x41\xac\xff\x2f\xdb\x94\x52\x11\xdf\x8c\x14"
        "\xe7\x7e\xf4\xa1\xea\x7e\xfa\xdd\xf5\xff\xd3\x77\xd5\x96\x75\x7f\x12"
        "\x29\x5e\x7f\xfa\x23\xb9\xae\xf6\x58\x59\xd7\xec\x76\xa7\xf3\x8a\xd7"
        "\x5b\x0b\xf3\xa7\xcb\xda\xbf\x8c\x14\xbf\xfa\x46\xb7\x36\xaa\xda\x1b"
        "\xb9\xf6\xc9\x9d\xda\x33\x65\xed\x60\xa4\xf8\xf3\xcd\xdd\xb5\x5f\xcd"
        "\xb5\x1f\xd8\xa9\x3d\x5b\xd6\x9e\x8c\x14\xdf\xfb\xcf\xbd\x6b\x3f\xb8"
        "\x53\x7b\xae\xac\xfd\x49\xa4\xf8\x87\xbf\x69\x74\x6b\x87\xca\xda\xdf"
        "\xcd\xb5\x27\x76\x6a\x9f\x99\x5d\x5c\x98\x7b\xd0\xb0\x96\xf3\xff\x9d"
        "\x48\xf1\xd7\x57\x7f\x2b\x75\xfb\x7c\xdf\xf9\xef\xf9\xfb\x0f\xab\x77"
        "\xe5\xb6\x7b\xe6\xfc\xcd\xb7\xdf\xae\xf9\x1f\xee\xd9\xb7\x9a\xe7\xf5"
        "\x8f\xf3\xfc\x37\x1f\x30\xff\x17\x22\xc5\x77\xea\x1f\xc9\x75\x9d\xb1"
        "\x9f\xc9\xcf\x3f\x51\xfd\x7f\x67\xfe\x3f\x11\x29\xfe\xfd\x5f\x76\xd7"
        "\x5e\xcf\xb5\xef\xdf\xa9\x3d\xb3\xdf\x6e\x1d\xb5\x72\xfe\xbf\x1d\x29"
        "\xbe\xfb\x17\x3f\xde\xee\x73\x9e\xff\x3c\xb2\x3b\x33\xd4\x3b\xff\xbf"
        "\xdc\xb7\x3b\xb7\xdf\x25\x47\x34\xff\x4f\xf4\xec\x1b\xce\xed\x9a\xfd"
        "\x05\xc7\xe2\xdd\x68\xf9\xc5\xaf\xbf\xd0\x5c\x58\x98\x5f\xb2\x61\xc3"
        "\x86\x8d\xed\x8d\xa3\x3e\x33\x71\x18\xca\xcf\xff\x3f\x8d\x14\xff\x77"
        "\xa2\x48\xdd\xeb\x98\xfc\xf9\xff\x9e\xce\xa3\x9d\xeb\xbf\xff\xfe\xc6"
        "\xce\xe7\xff\xa5\xbb\x72\xdb\x11\x7d\xfe\xbf\xbf\x67\xdf\xa5\x7c\xd5"
        "\xd2\xdf\x17\x51\x5f\xb9\x79\xab\xff\xa9\x88\xfa\xf2\x8b\x5f\x3f\xd5"
        "\xba\xd9\xbc\x31\x7f\x63\xbe\x7d\xf6\xcc\xe9\x4f\x7f\xfa\xc2\x99\xd3"
        "\x67\x2e\xf4\x3f\xd6\xbd\xb8\xdb\xd9\xda\xf7\xd8\xbd\x13\x94\xf3\xff"
        "\x83\x48\xf1\xc3\xbf\xfb\xe1\xf6\xef\x31\xbb\xaf\xff\xf6\xbe\xfe\x1f"
        "\xba\x2b\xb7\x1d\xd1\xfc\x3f\xd9\xdb\xa7\x5d\xd7\x35\xfb\x1e\x8a\x77"
        "\xa5\x72\xfe\xff\x2a\x52\x3c\xf1\xd9\x1f\x6f\xff\xbe\xf9\x66\xd7\xff"
        "\xdd\xdf\xff\x4f\x7e\x6c\x77\x6e\xff\xfc\x1d\xd1\xfc\x7f\xa0\x67\xdf"
        "\x70\x6e\x57\xeb\x17\x1c\x0b\x00\x00\x00\x00\x00\x00\x00\x00\x80\x47"
        "\xc9\x50\x2a\xe2\xcf\x22\xc5\x6f\xff\xe1\xaf\xa7\xee\x1a\xa2\xfd\xfc"
        "\xfb\xbf\xb9\xbb\x72\xdb\x11\xfd\xfb\xaf\x13\x3d\xfb\xe6\x0e\x69\x5d"
        "\xc3\xbe\x07\x19\x00\xe0\x18\x29\xaf\xff\x3e\x18\x29\xfe\x71\xeb\xfb"
        "\xdb\x6b\xb9\x77\x5f\xff\xc5\xaf\x75\x6b\x7b\xaf\xff\xee\xe7\x38\xdc"
        "\xff\x1f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1e"
        "\x75\x29\x8a\xf8\xfd\x48\x31\xf4\xca\x66\x5a\x1f\x28\x1f\x77\xd4\xaf"
        "\xb4\xda\xb7\xef\x4c\x8d\x4f\xec\x7d\xd8\x60\x8a\x14\xb5\x28\xaa\xfa"
        "\xf2\xab\x7e\xe6\xec\xb9\xf3\x9f\xba\x70\x71\xb4\x9b\x57\x06\x0e\xb3"
        "\x1b\x1f\x8e\xe7\x26\xaf\x5d\x6e\x3c\xbb\x78\xf3\xd6\xd2\xfc\xf2\xf2"
        "\xfc\x5c\x63\xaa\xdd\x9a\x5d\x9c\x9b\xdf\xf7\x2b\x3c\xec\xf1\x77\x1b"
        "\xa9\x06\xb0\x71\xf3\x85\xdb\x73\xd7\xaf\x2f\x37\xce\x3e\x73\x6e\xd7"
        "\xd3\x77\x86\x5f\x1b\x78\xfc\xc4\xf0\xa5\x8b\xa7\x2e\x8c\x76\x6b\xa7"
        "\xc6\x27\x26\x26\x7b\x6a\xfa\xfa\xdf\xf2\x77\xbf\x47\xba\xcf\xfe\xc7"
        "\xa2\x88\xef\x47\x8a\x37\x86\x5f\x4f\xdf\x1d\x88\xa8\xc5\xc3\x8f\xc5"
        "\x03\xde\x3b\x07\x6d\xb0\xea\xc4\x48\xd5\x89\xa9\xf1\x89\xaa\x23\x0b"
        "\xad\x66\x7b\xa5\x7c\x32\xd5\x72\x55\x2d\xa2\xd1\x73\xd0\x58\x77\x8c"
        "\x0e\x61\x2e\x1e\xca\x58\xc4\x6a\xd9\xfc\xb2\xc1\x23\x65\xf7\x26\x6f"
        "\x35\x97\x9a\x33\x0b\xf3\x8d\x2f\x36\x97\x56\x5a\x2b\xad\xc5\x76\xaa"
        "\x75\x5a\x5b\xf6\xa7\x11\xb5\x18\x4d\x11\x6b\x11\xb1\xb1\xc7\x8f\x64"
        "\x7f\x14\xf1\xcd\x48\xf1\xd2\xe9\xcd\xf4\x4f\x03\x11\x45\x77\x1c\x3e"
        "\x79\x75\xf2\x4b\xa7\xcf\x3d\xb8\x3d\xb5\x03\xe8\xe3\x3e\x94\xed\x6c"
        "\xf4\x47\xac\xd5\x1e\x81\x39\x3b\xc6\x06\xa2\x88\xbf\x8f\x14\x3f\x7b"
        "\xf5\x64\x7c\x6f\x20\xa2\x2f\x3a\x5f\xf1\xf1\x88\x2f\x94\xf9\x4a\xc4"
        "\xcb\x65\x7e\x26\x22\x95\x6f\x8c\xf3\x11\x3f\x3d\xd4\x53\x3b\x07\xa9"
        "\x2f\x8a\x38\x1f\x29\x16\xd3\x66\x7a\x75\xa0\x3c\x1f\x74\xcf\x2b\x57"
        "\xbe\xdc\xf8\x7c\xfb\xfa\x62\x4f\x6d\xf7\xbc\xf2\xc8\x7f\x3e\x1c\xa6"
        "\x63\x7e\x6e\xaa\x47\x11\x3f\xa8\xce\xf8\x9b\xe9\x9f\xfd\x5c\x03\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1c\x23\x45\xac\x45\x8a"
        "\xaf\x9c\x3a\x99\xaa\xf5\xc1\xdb\x6b\x8a\x5b\xed\x1b\x8d\x6b\xcd\x99"
        "\x85\xce\xb2\xbe\xee\xda\xbf\xee\x9a\xe9\xad\xad\xad\xad\x46\xea\xe4"
        "\x58\xce\xe9\x9c\xab\x39\xd7\x72\xae\xe7\xdc\xc8\x19\xb5\x7c\x7c\xce"
        "\xb1\x9c\xd3\x39\x57\x73\xae\xe5\x5c\xcf\xb9\x91\x33\x8a\x7c\x7c\xce"
        "\xb1\x9c\xd3\x39\x57\x73\xae\xe5\x5c\xcf\xb9\x91\x33\xfa\xf2\xf1\x39"
        "\xc7\x72\x4e\xe7\x5c\xcd\xb9\x96\x73\x3d\xe7\x46\xce\x38\x26\x6b\xf7"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x77\x96"
        "\x5a\x14\xd5\x5d\xdc\xbf\xf5\xb5\xcd\xb4\x35\xd0\xb9\xbf\xf4\x74\x74"
        "\x72\xdd\xfd\x40\xdf\xf1\xfe\x3f\x00\x00\xff\xff\x18\x35\x73\x54",
        3093));
    NONFAILING(syz_mount_image(/*fs=*/0x200000000c40, /*dir=*/0x2000000000c0,
                               /*flags=*/0, /*opts=*/0x200000000180,
                               /*chdir=*/0x47, /*size=*/0xc15,
                               /*img=*/0x200000001940));
    break;
  case 1:
    //  link arguments: [
    //    old: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
    //    }
    //    new: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 30 61 61 61 61 61 61 61 61 61 61 61 61 61
    //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
    //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
    //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
    //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
    //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
    //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
    //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
    //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
    //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
    //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
    //      61 00} (length 0xfc)
    //    }
    //  ]
    NONFAILING(memcpy((void*)0x200000000400, "./file1\000", 8));
    NONFAILING(memcpy(
        (void*)0x200000000240,
        "./"
        "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000",
        252));
    syscall(__NR_link, /*old=*/0x200000000400ul, /*new=*/0x200000000240ul);
    break;
  case 2:
    //  syz_mount_image$msdos arguments: [
    //    fs: ptr[in, buffer] {
    //      buffer: {6d 73 64 6f 73 00} (length 0x6)
    //    }
    //    dir: ptr[in, buffer] {
    //      buffer: {2e 00} (length 0x2)
    //    }
    //    flags: mount_flags = 0x1a5a438 (8 bytes)
    //    opts: ptr[inout, array[ANYUNION]] {
    //      array[ANYUNION] {
    //      }
    //    }
    //    chdir: int8 = 0xd (1 bytes)
    //    size: len = 0x0 (8 bytes)
    //    img: ptr[in, buffer] {
    //      buffer: (compressed buffer with length 0x0)
    //    }
    //  ]
    //  returns fd_dir
    NONFAILING(memcpy((void*)0x200000000f40, "msdos\000", 6));
    NONFAILING(memcpy((void*)0x200000000f00, ".\000", 2));
    NONFAILING(syz_mount_image(
        /*fs=*/0x200000000f40, /*dir=*/0x200000000f00,
        /*flags=MS_I_VERSION|MS_PRIVATE|MS_POSIXACL|MS_SYNCHRONOUS|MS_STRICTATIME|MS_SILENT|0x202428*/
        0x1a5a438, /*opts=*/0x200000005580, /*chdir=*/0xd, /*size=*/0,
        /*img=*/0x200000000000));
    break;
  case 3:
    //  openat arguments: [
    //    fd: fd_dir (resource)
    //    file: nil
    //    flags: open_flags = 0x80000 (4 bytes)
    //    mode: open_mode = 0x1 (2 bytes)
    //  ]
    //  returns fd
    syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0ul,
            /*flags=O_CLOEXEC*/ 0x80000, /*mode=S_IXOTH*/ 1);
    break;
  case 4:
    //  syz_mount_image$nilfs2 arguments: [
    //    fs: ptr[in, buffer] {
    //      buffer: {6e 69 6c 66 73 32 00} (length 0x7)
    //    }
    //    dir: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 33 00} (length 0x8)
    //    }
    //    flags: mount_flags = 0x400 (8 bytes)
    //    opts: ptr[inout, array[ANYUNION]] {
    //      array[ANYUNION] {
    //      }
    //    }
    //    chdir: int8 = 0x1 (1 bytes)
    //    size: len = 0xadc (8 bytes)
    //    img: ptr[in, buffer] {
    //      buffer: (compressed buffer with length 0xadc)
    //    }
    //  ]
    //  returns fd_dir
    NONFAILING(memcpy((void*)0x200000000340, "nilfs2\000", 7));
    NONFAILING(memcpy((void*)0x200000000380, "./file3\000", 8));
    NONFAILING(memcpy(
        (void*)0x200000002580,
        "\x78\x9c\xec\xdd\x5d\x88\x5c\x57\x01\x00\xe0\x73\x77\x77\x36\xbb\x69"
        "\x6b\xa6\x35\xb5\x6b\x1a\xdb\xa4\xd5\xb6\xfe\x74\xd3\x6c\xd6\xf8\x13"
        "\x34\x29\x09\x82\xa1\x29\xe2\x4b\xa1\xf8\x12\xd2\xb4\x06\x63\x04\x2b"
        "\xa8\xa5\xd0\x24\x4f\xbe\xd9\x52\x52\xf0\xc9\x1f\x7c\xea\x4b\xa9\x22"
        "\x58\x10\x09\x7d\xf2\xa5\x60\x03\x45\xe8\x53\x15\xf4\xa1\x21\x62\xc1"
        "\x87\x1a\x4d\x46\xb2\x73\xce\xcc\x9d\x93\x99\xcc\xcc\x66\x77\xee\xce"
        "\xee\xf7\xc1\xdd\x33\xe7\x9e\x73\xe7\x9c\x3b\x7b\xe7\xce\xfd\x3b\xe7"
        "\x04\x60\xc3\x9a\x58\xfa\xbb\xb8\x38\x57\x84\x70\xee\x8d\x97\x0f\xbd"
        "\xff\xc0\x3f\x66\xaf\xcd\xd9\xdf\xca\x51\x5f\xfa\x3b\x55\x8a\xd5\x42"
        "\x08\x45\x8c\x4f\x65\xef\xf7\xde\x64\x33\xbc\xf2\xc1\xf3\xc7\xba\x85"
        "\x45\x58\x58\xfa\x9b\xe2\xe1\xf1\x4b\xad\x65\x6f\x09\x21\x9c\x0e\x3b"
        "\xc2\xf9\x50\x0f\xdb\xce\x5d\x78\xe9\xad\x85\xc7\x8e\x9c\x39\x7c\x76"
        "\xe7\xdb\xaf\xee\xbb\xb8\x3a\x6b\x0f\x00\x00\x1b\xcb\x37\xce\xef\x5b"
        "\xbc\xf3\xaf\x7f\xbe\xfb\xf6\xcb\xaf\xdd\x73\x20\x6c\x6a\xcd\x4f\xc7"
        "\xe7\xf5\x34\x63\xa6\x79\xdc\x7f\x20\x1e\xf8\xa7\xe3\xff\x89\xd0\x19"
        "\x2f\x4a\x53\xd9\x74\x96\x6f\x2a\x4e\x13\xb3\x9d\xf9\x26\xbb\xe4\x2b"
        "\x97\x53\xcb\xf2\x4d\xf5\x28\x7f\x3a\x2b\xbf\xd6\x23\xdf\xa6\x70\xe3"
        "\xf2\x27\x4b\xf3\xba\xad\x37\x8c\xb3\xb4\x1d\xd7\x43\x31\x31\x1f\x42"
        "\xd8\xdc\x8a\x4f\x4c\xcc\xcf\x37\xcf\xc9\xc3\xd2\x79\xfd\x74\x31\x7f"
        "\xea\xc4\xc9\xa7\x9f\xad\xa8\xa2\xc0\x8a\xfb\xf7\xbd\x21\x84\x1d\xa5"
        "\xe9\xe0\xd9\xce\xf8\x5a\x9b\xf6\xaf\x81\x3a\x2c\x73\x6a\xac\x81\x3a"
        "\x8c\xe5\x74\x60\x74\x65\x5d\x6e\x34\x55\xbe\xce\x23\x9a\x1a\x5b\xaa"
        "\xde\x03\x01\x34\xe5\xf7\x0b\xaf\x73\x3a\xbf\xb2\x70\x73\x5a\xef\x36"
        "\x35\x58\xf9\x97\x1e\x9d\xe8\xbe\x3c\xac\x80\x51\x6f\xff\x43\x95\x3f"
        "\x5d\x71\xf9\x41\xf9\xbf\x3e\x63\x8f\xc3\xca\x59\xaf\x5b\x53\x5a\xaf"
        "\xf4\x3d\xba\x35\xc6\xf3\xfb\x08\xf9\xf3\x4b\xaf\xfc\xa1\x73\xb9\xb6"
        "\xfc\x4e\x47\xe7\xdc\xfc\x7e\x44\x6d\xc0\x7a\xf6\xba\x8f\x30\x2e\xf7"
        "\x17\x7a\xd5\x73\x72\xc4\xf5\x58\xae\x5e\xf5\xcf\xb7\x8b\xf5\xea\x2b"
        "\x31\x4c\x9f\xc3\x57\x3b\x52\xef\xed\xf8\xfe\xe4\xff\xd3\x71\xf9\x1f"
        "\x03\xdd\x7d\x98\x5f\xff\x37\x99\x4c\x6b\x7b\x0a\x1d\xf1\xda\xcd\xbc"
        "\x57\xa3\xe2\xfd\x0f\xb0\x76\xe5\xcf\xcd\x35\xd2\xfd\xd1\x28\x7f\xae"
        "\x2f\x4f\xdf\xd4\x27\x7d\xa6\x4f\xfa\x6c\x9f\xf4\xcd\x7d\xd2\x6f\xe9"
        "\x93\x0e\x1b\xd9\x6f\x7f\xf0\xd3\xf0\x62\xd1\xbe\xde\x95\x9f\xd3\x0f"
        "\x7b\x3d\x3c\x5d\x67\xbb\x2d\x86\x1f\x19\xb2\x3e\xf9\xf5\xc8\x61\xcb"
        "\xcf\x9f\xfb\x1d\xd6\xcd\x96\x9f\x3f\x4f\x0c\x6b\xd9\xef\x8f\x3e\x71"
        "\xfc\x8b\x4f\x3d\x79\xa1\xf9\xfc\x7f\xd1\xda\xfe\xaf\xc6\xed\x3d\x9d"
        "\x6e\xd4\xe3\x77\xeb\x7c\xcc\x90\xae\x17\xe6\xd7\xd5\x5b\xcf\xfe\xd7"
        "\x3b\xcb\x99\xe8\x91\xef\x8e\xac\x3e\xb7\x75\xc9\xbf\xf4\x7a\x6b\x67"
        "\xbe\x62\x6b\xfb\x7d\x42\x69\x3f\x73\x5d\x3d\xe6\x3a\x97\xdb\xd2\x2b"
        "\xdf\xf6\xce\x7c\xf5\x2c\xdf\x6c\x9c\x66\xb2\xfa\xe6\xc7\x27\x9b\xb3"
        "\xe5\xd2\xf1\x47\xda\xaf\xa6\xcf\x6b\x2a\x5b\xdf\x5a\xb6\x1e\xd3\x59"
        "\x3d\xd2\x7e\xe5\xf6\x18\xe6\xf5\x80\xe5\x48\xdb\x63\x7a\xfe\xbf\xdd"
        "\x1e\xa0\xf9\xfc\x7f\xda\x3e\xe7\x42\xad\x78\xfa\xc4\xc9\xe3\x8f\xc4"
        "\x78\xda\x4e\xff\x34\x59\xdb\x74\x6d\xfe\xee\x11\xd7\x1b\x58\x39\xbd"
        "\xbe\xff\xe9\xf7\x6b\x2e\x74\xb6\xff\xb9\xb5\x35\xbf\x36\x51\xde\x2f"
        "\x6c\x69\xcf\x2f\x9a\xfb\x85\xd7\xe3\xfb\x75\xce\x5f\x68\x95\x53\x9a"
        "\x5f\xfa\x51\x4b\xbf\x73\xdf\x9e\x9c\x5d\xca\x3f\x7f\xec\x7b\x27\x9f"
        "\x5a\x85\xf5\x86\x8d\xec\xd9\x1f\x3f\xf7\x9d\xa3\x27\x4f\x1e\xff\xbe"
        "\x17\xcb\x7e\xf1\xb5\xb5\x51\x8d\x61\x5e\xa4\xd3\x96\xb5\x52\x1f\x2f"
        "\x86\x7d\xb1\x63\xb5\x8b\xa8\x78\xc7\x04\xac\xba\x5d\x2f\x34\x0f\x02"
        "\x1e\x3e\xf1\xdd\xa3\xcf\x1c\x7f\xe6\xf8\xa9\x3d\x7b\xf7\xee\x59\x58"
        "\xd8\xfb\xa5\x3d\x8b\xbb\x96\x8e\xeb\x77\x95\x8f\xee\xcb\x4e\x57\x50"
        "\x5b\x60\x25\xb5\x7f\xf4\xab\xae\x09\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x30\xa8\x1f\x1e\x3e\x74\xe1\x9d\x37\xbf\xf0\x6e\xb3\xfd\x7f\xbb"
        "\xfd\x5f\x6a\xff\x9f\x9e\xfc\x4d\xed\xff\x7f\x92\xb5\xff\xcf\xdb\xc9"
        "\xa7\x76\xf0\xa9\x1d\xe0\xed\x5d\xd2\x97\xf2\x64\x1d\xac\x4e\x67\xf9"
        "\x6a\x71\xfa\x68\x56\xdf\xd4\x0d\x40\xf1\x42\x33\xbc\x33\x5b\xee\x63"
        "\x31\x6c\x8d\xe3\x17\xdb\xff\xa7\xe2\xf2\x7e\x5d\x53\x7d\xee\xca\xe6"
        "\xd7\x7a\x44\xb3\xee\x04\xae\xeb\x2f\x65\x3a\xeb\x83\x24\x1f\x2f\xf0"
        "\xbe\x18\x9e\x8d\xe1\xaf\x02\x54\xa8\x98\xed\x3e\x3b\x86\x37\xe8\xdf"
        "\xba\xf8\xb0\xb4\xad\xa7\xfe\x29\x4a\x4d\x78\x1b\xfa\x07\x1e\x1f\xe9"
        "\xff\x96\xf7\x5f\x94\xda\x7f\x77\xed\xd7\xa9\x4b\x7b\x6d\xc6\xcb\x28"
        "\x5a\x2c\x56\xbd\x8e\x40\x77\xff\xdc\x50\xfd\x7f\xff\xab\xbd\xe2\x95"
        "\xd7\xc5\xd4\x7b\x9a\x1a\x6d\x79\x3f\xdb\xb8\xdb\x44\xa3\xe7\x51\xfa"
        "\xa0\x23\xd8\x00\xac\x8c\xaa\xc7\xff\xfc\x7b\x68\x96\x9b\xae\x7f\x9e"
        "\xfa\xe3\xd7\x67\xae\x4d\x29\xdb\xa5\x47\x3b\xf7\x97\x79\xff\xa5\x30"
        "\x8c\xbf\xbc\xd3\x19\x5f\xeb\xe3\x4f\xae\x76\xf9\xf9\xb8\x7d\xa3\x2e"
        "\xbf\xea\xf5\x1f\xf5\xf8\x9f\xad\xf1\xef\xe2\xfe\x2f\xed\xf7\x7a\xef"
        "\xff\xb2\x11\xf3\xea\xcb\x2b\xf7\x3f\x3f\xbf\xf8\x6e\xa9\xd8\xb0\x6d"
        "\xd0\xf2\xf3\xf5\x4f\xfd\x40\x6f\x1d\xae\xfc\xcb\xb1\xfc\xb4\x36\x0f"
        "\x86\xc1\xca\x6f\xfc\x32\x2b\x3f\xbf\x21\x34\xa0\xff\x66\xe5\x6f\x1e"
        "\xb0\xfc\xeb\xd6\x7f\xfb\xf2\xca\xff\x5f\x2c\x3f\x7d\x6c\x0f\xdd\x3f"
        "\x68\xf9\xcd\x1a\x17\x13\x9d\xf5\x98\xcd\xd6\x23\xdd\xff\xcb\xaf\x1b"
        "\x27\x57\xb2\xf5\x4f\x7d\x7b\xde\xa0\xfc\x6f\x3e\xd7\x6d\xfd\x97\x39"
        "\x50\xe3\xd5\x58\x3e\x6c\x64\xe3\x32\xce\xec\xb0\xb2\xe3\x88\xd6\x41"
        "\x7b\xbf\xf1\x7f\x87\xfd\xfd\xbf\xd9\xf1\x7f\x5b\x95\xcd\x76\x6b\xf9"
        "\x73\x18\x9f\x8f\xf1\xb4\x23\x4e\xcf\x39\xe4\xe3\x9d\x0c\x5b\xff\xf4"
        "\x7c\x45\xfa\x1d\xb8\x33\x7b\xff\xa2\xcf\xef\x9b\xf1\x7f\xc7\xdb\x97"
        "\x63\xd8\xef\xfb\x90\xc6\xff\x4d\xdb\x63\x3d\xfe\xe4\x97\xe2\x4b\x9f"
        "\x65\x8a\xd7\xba\x7c\xb6\xeb\x75\x5f\x03\xe3\xea\xbd\x0d\x75\xff\x6f"
        "\x54\xd3\xc5\xe6\x69\xd0\xf2\x96\x9f\xa9\xbe\xfe\xa6\x21\xa6\xc6\xe4"
        "\x32\x96\x6b\x3d\x67\x55\x71\xfd\x1b\x8d\xc6\xea\x5e\xd0\xea\xa3\xd2"
        "\xc2\xa9\xfc\xf3\xaf\xfa\xee\x73\xd5\xe7\x29\xf7\x55\x5c\x7e\x3f\xf9"
        "\xf8\xbf\xf9\x31\x7c\x3e\xfe\x6f\x9e\x9e\x8f\xff\x9b\xa7\xe7\xe3\xff"
        "\xe6\xe9\xb3\xf1\x3f\xf4\x7e\x8f\xf4\x7c\xfc\xdf\x7c\x7b\xce\xc7\xff"
        "\xcd\xd3\xef\xca\xde\x37\x1f\x1f\x78\xae\x4f\xfa\xc7\xbb\xa4\x17\xa1"
        "\x9d\xbe\xad\xfb\xf2\xad\xd3\xf6\xbb\xfb\xbc\xff\xf6\x3e\xe9\x9f\xe8"
        "\x93\xbe\xb3\x95\xbe\xbf\x23\x47\x4a\xbf\xe7\x86\xcb\xb7\xf3\xf5\x7a"
        "\xff\x3b\xfa\xa4\xdf\xdf\x27\xfd\x93\x7d\xd2\x3f\xd5\x27\xfd\x81\x3e"
        "\xe9\x0f\x95\xd2\xcb\x63\x40\xa7\xf4\x4f\x67\xcb\x17\x59\xfa\x7a\x97"
        "\xf6\x3f\xbd\x3e\x3f\x60\xfd\xca\xdb\xe7\xf9\xfe\xc3\xc6\x91\xee\xff"
        "\xf4\xfa\xfe\x6f\x6d\xa7\x4f\x97\xb3\x8c\xb6\x96\xc0\x6a\x78\xe5\xb5"
        "\xdd\x07\x9f\xfc\xcd\xb7\xea\xcd\xf6\xff\xd3\xad\xeb\x21\xe9\x3e\xde"
        "\x81\x18\xaf\xc5\x73\xa3\x1f\xc5\x78\x7e\xdf\x3b\x94\xe2\xd7\xd2\xde"
        "\x8c\xf1\xbf\x65\xe9\x55\x5f\x6f\x02\xda\xf2\xfe\x33\xf2\xdf\xff\x07"
        "\xfb\xa4\x03\xe3\x2b\x3d\xe7\xe5\xfb\x0d\x1b\x50\x31\xd3\x7d\x76\x0c"
        "\xfb\xf5\x5b\xd5\xeb\x38\x9f\xf1\xf2\x99\x18\x7e\x36\x86\x9f\x8b\xe1"
        "\xc3\x31\x9c\x8f\xe1\xae\x18\xee\x8e\xe1\xc2\x88\xea\xc7\xea\x38\xf8"
        "\xfa\xef\xf6\xbd\x58\xb4\xcf\xf7\xb7\x64\xe9\x83\x3e\x4f\x9e\xb7\x07"
        "\xea\xe8\x27\x2a\x84\xb0\x67\xc0\xfa\xe4\xd7\x07\x86\x7d\x9e\x3d\xef"
        "\xc7\x6f\x58\x37\x5b\xfe\x32\x9b\x83\x01\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x54\x66\x62\xe9\xef\xe2\xe2\x5c\x11\xc2\xb9\x37\x5e\x3e\xf4\xc4\x91"
        "\x13\xbb\xae\xcd\xd9\xdf\xca\x51\x5f\xfa\x3b\x55\x8a\xd5\x5a\xcb\x85"
        "\xf0\x48\x0c\x27\x63\xf8\x8b\xf8\xe2\xca\x07\xcf\x1f\x2b\x87\x57\x63"
        "\x58\x84\x85\x50\x84\xa2\x35\x3f\x3c\x7e\xa9\x55\xd2\x2d\x21\x84\xd3"
        "\x61\x47\x38\x1f\xea\x61\xdb\xb9\x0b\x2f\xbd\xb5\xf0\xd8\x91\x33\x87"
        "\xcf\xee\x7c\xfb\xd5\x7d\x17\x57\xef\x13\x00\x00\x00\x80\xf5\xef\xff"
        "\x01\x00\x00\xff\xff\x4f\x76\x07\x39",
        2780));
    NONFAILING(syz_mount_image(/*fs=*/0x200000000340, /*dir=*/0x200000000380,
                               /*flags=MS_NOATIME*/ 0x400,
                               /*opts=*/0x2000000003c0, /*chdir=*/1,
                               /*size=*/0xadc, /*img=*/0x200000002580));
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  if ((reason = setup_802154()))
    printf("the reproducer may not work as expected: 802154 injection 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();
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}