// https://syzkaller.appspot.com/bug?id=556a1a94633215aeff61a24d76668afa1669607c
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.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/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/futex.h>
#include <linux/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

static unsigned long long procid;

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;
}

//% 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 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_RDWR);
  if (loopfd != -1) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
}

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

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 < 4; 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 == 3 ? 4000 : 0));
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
}

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);
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    //  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 30 00} (length 0x8)
    //    }
    //    flags: mount_flags = 0x0 (8 bytes)
    //    opts: ptr[inout, array[ANYUNION]] {
    //      array[ANYUNION] {
    //        union ANYUNION {
    //          ANYBLOB: buffer: {00} (length 0x1)
    //        }
    //        union ANYUNION {
    //          ANYRES32: ANYRES32 (resource)
    //        }
    //        union ANYUNION {
    //          ANYRESHEX: ANYRES64 (resource)
    //        }
    //      }
    //    }
    //    chdir: int8 = 0xd (1 bytes)
    //    size: len = 0xa02 (8 bytes)
    //    img: ptr[in, buffer] {
    //      buffer: (compressed buffer with length 0xa02)
    //    }
    //  ]
    //  returns fd_dir
    memcpy((void*)0x200000000380, "nilfs2\000", 7);
    memcpy((void*)0x200000000a40, "./file0\000", 8);
    memset((void*)0x200000000100, 0, 1);
    *(uint32_t*)0x200000000101 = -1;
    sprintf((char*)0x200000000105, "0x%016llx", (long long)-1);
    memcpy(
        (void*)0x200000000a80,
        "\x78\x9c\xec\xdd\x4f\x6c\x5c\x47\x1d\x00\xe0\x79\x6b\xaf\x1d\xd7\xa9"
        "\xb3\x86\x02\xa6\xa1\x89\x81\x02\xa9\xa0\x4e\xb0\xad\x2a\xb9\xa4\x31"
        "\x94\x6b\xa4\xde\xca\xb1\x0a\x69\x88\x70\x53\x94\x70\x69\x55\xa9\x29"
        "\x52\xc5\x0d\x45\xaa\x7a\xec\x81\xaa\x87\x5c\x10\x15\xe2\xd2\x03\x52"
        "\x44\x55\x44\x2f\x41\x94\x3b\x0a\x85\x4a\x55\x51\xa0\x15\x08\xa9\xa0"
        "\xd6\x28\xf6\xcc\x7a\x77\xec\xc7\xfe\xb1\xbd\xf6\xfa\x7d\x9f\xf4\xf3"
        "\xf8\xbd\x99\x7d\x33\xcf\xbb\xde\x37\x7e\x9e\x9d\x09\x40\x65\xd5\x56"
        "\xbf\x2e\x2e\xce\x14\x21\xbc\xf4\xfa\x8b\x8f\xfc\xe4\x0f\xaf\x7c\xb7"
        "\x08\x21\x1c\x6d\x96\x68\xb4\x94\x5b\xdb\xaa\x87\x10\x8a\xb6\xc7\xaf"
        "\xbb\x15\x33\x3e\xfe\xf0\xd9\x73\x9b\xa5\x45\x98\x5f\xfd\x9a\xb6\xc3"
        "\xd9\xdb\xcd\xc7\x4e\x86\x10\xae\x86\xd9\x70\x23\x34\xc2\xc2\xfb\x8f"
        "\xcd\xbd\xb9\xb4\xf4\xf2\xf5\x9b\x8f\x5e\x9e\x7e\xe1\xf4\xdb\x3b\x74"
        "\xfa\x00\x00\x50\x29\x67\xdf\xf8\xc7\xef\x1f\x78\xef\xad\x6f\x4c\xff"
        "\xe7\x17\x47\xce\x84\xf1\xe6\xfe\xd4\x3f\x6f\xc4\xed\xc9\xd8\xef\x3f"
        "\x11\xfb\xf7\x79\xff\xbf\x68\x49\x8b\x96\xed\x64\x2c\x2b\x37\x12\x23"
        "\xff\xfb\x61\x24\x2b\x37\x9a\xd5\x33\x5a\x52\x5f\x3d\x3b\x4e\xbd\xa4"
        "\xdc\x58\x87\xfa\x46\x5a\xf6\x6d\x76\x9e\x00\xb0\x1f\xac\xdf\xd7\x2b"
        "\x6a\x73\x6d\xdb\xb5\xda\xdc\xdc\xda\x75\xff\x8e\x5b\xe3\x63\xc5\xdc"
        "\xa5\x8b\xcb\x4f\x5c\xd9\xa5\x86\x02\x00\xdb\xe6\x5f\x0f\x87\x10\xce"
        "\x08\x21\x84\x10\xa2\x4a\xb1\x72\x68\xb7\x7b\x20\x00\x40\xd5\xe5\xe3"
        "\x85\x37\xb8\x9a\x8f\x2c\xd8\x9a\xe6\xd1\x0e\x74\x57\xff\xed\xa5\xda"
        "\xe6\x8f\x87\x6d\x30\xe8\xd7\xbf\xfa\x87\xab\xfe\x57\x9f\xf7\x8e\xc3"
        "\xf6\xd9\xaf\xaf\xa6\x74\x5e\xe9\xf7\x28\x8d\x63\xc8\xc7\x11\x8e\x64"
        "\x8f\xeb\xf5\xf7\xbf\x96\x1d\x67\xb4\xc7\x76\x96\x8d\x2b\x1c\x96\xf1"
        "\x86\x65\xed\xcc\x7f\xae\x7b\x55\x59\xfb\x7b\x7d\x1e\x77\x4b\x59\xfb"
        "\xf3\xf1\xb0\x7b\x55\x59\xfb\xf3\x71\xba\x7b\x55\x59\xfb\xc7\x07\xdc"
        "\x8e\x7e\x95\xb5\xff\xc0\x80\xdb\xd1\xaf\xb2\xf6\x4f\x34\xbf\xdb\xaf"
        "\x57\xb8\xed\x71\xdf\xea\xd7\xf5\x77\x8b\x23\x59\x7e\xeb\xf5\x33\x7f"
        "\x4f\x1f\x96\xf7\x78\x00\xa0\xdd\x47\xc6\xff\x09\x21\x84\x10\x95\x8b"
        "\xe7\x76\xbb\x03\x02\x00\xec\x39\xf9\xfc\x38\x2b\x51\xca\xcf\xe7\xe3"
        "\xc9\xf3\xf3\x79\x78\xf2\xfc\x7c\x5e\xa0\x3c\x7f\xbc\x43\xfe\x81\x0e"
        "\xf9\x00\xc0\x46\x0b\xbf\xba\xf0\xf3\x6b\xc5\xfa\xff\xf9\xb7\x3a\x1e"
        "\x2e\x8d\xbb\xb8\x2b\xa6\x93\x3d\xb6\x27\x1f\xad\xd1\x6b\xfd\x5b\x1d"
        "\xf7\xb4\xd5\xfa\x87\x65\xdc\x12\x00\xd5\xf6\xd4\x4f\x17\xbf\xf3\xd6"
        "\x99\xa5\x91\xb5\xf9\x7f\xd7\xaf\x65\x9f\x64\xf3\xff\xa6\xb9\x7a\xaf"
        "\xc5\xed\x34\xee\xf2\x60\xb6\xdd\x9c\xfb\x77\xb6\xbd\x9e\x5a\x49\xb9"
        "\x83\x3b\x71\x52\x00\xc0\xff\x95\xae\xbf\x65\xf3\xff\xde\x1d\xb7\x67"
        "\x42\xbd\x78\xe2\xe2\xf2\xf9\x13\x71\x7b\x2a\xa6\xbf\x1b\xaf\x8f\xdf"
        "\xd9\xff\xcd\x01\xb7\x1b\x00\xe8\x5f\xb7\xf3\xff\xcf\x84\xf6\xf9\xff"
        "\x0f\x36\xf7\xd7\x6b\xad\xfd\x82\x43\xeb\xfb\x8b\xd6\x7e\x41\x23\xdb"
        "\x3f\x5f\xb2\x7f\x21\x6e\x4f\xc7\xf4\xfb\xe3\x13\xab\xfb\xe7\xce\x3d"
        "\xb5\xfc\xbd\xed\x3e\x79\x00\xa8\xa8\x37\xbe\x75\xf0\xb5\x0f\x7e\x7b"
        "\x29\xac\xdd\xff\x5f\xff\xff\x77\xba\xff\x9f\x6e\xe3\x37\xe2\x58\xbb"
        "\x0f\x62\x81\xd4\x4f\x48\xf7\x07\x36\xdc\xff\x3f\xd6\x5e\xcf\x54\x59"
        "\xb9\x13\xed\xe5\x0e\x95\x95\x3b\xd9\x5e\xae\x91\x95\xab\xc7\xc8\xe7"
        "\xdd\xc8\xc7\x07\x4e\x64\x8f\x4b\xe3\x14\xd2\xb8\x87\xd4\xdf\x49\xe3"
        "\x1a\xa7\xcb\xda\x93\x4d\x90\x31\x96\x95\x1b\x8d\x71\x77\xd6\x9e\xa9"
        "\xac\x3d\x1b\xce\xf7\x44\x7b\x7b\xf2\x79\x68\x52\xfd\x8d\x6c\x7f\x3e"
        "\xee\x21\x95\x9b\x0e\x00\xb0\xd1\x95\xa7\x9f\xf9\xc1\xe3\xcb\xcb\xe7"
        "\x2f\xfb\xc6\x37\xbe\xa9\xe0\x37\xcf\x85\x10\x36\xcb\xda\xed\x77\x26"
        "\x60\xa7\x1d\xff\xd1\x93\x3f\x3c\x7e\xe5\xe9\x67\x1e\xbc\xf8\xe4\xe3"
        "\x17\xce\x5f\x38\x7f\x69\x61\x71\xfe\xd4\xa9\x87\x16\xe7\x17\x1f\x3a"
        "\xbe\x7a\x5f\xff\x78\xeb\xdd\x7d\x00\x60\x3f\x58\xef\xf4\xef\x76\x4b"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x32\x83\xf8\xa4\xf1"
        "\x6e\x9f\x23\x00\xd0\xee\xef\x0f\x87\x10\xce\x88\x2c\x46\xf6\x40\x1b"
        "\x84\x10\x29\x3e\xda\x03\x6d\x10\x62\x9f\xc5\xca\x4a\xbe\xe2\x2f\x00"
        "\xc0\x60\xf5\xba\xde\xfe\x56\x35\x8f\x16\xe7\xf3\x4f\xeb\x1e\xa4\xf4"
        "\xe0\x83\x7f\x9c\xbe\x13\xa9\xd8\xed\xa5\xf6\xfe\x92\xf5\x8b\xd9\x4e"
        "\x83\x7e\xfd\xab\x7f\xb8\xea\x7f\xf5\xf9\xed\xad\xbf\xb9\xbe\x48\xd7"
        "\xef\x7f\xb5\xf6\x03\xcc\xf6\x57\xef\xad\x5f\x9e\x3c\xd9\x5a\xff\xbd"
        "\xa3\x5d\xd6\x9f\x9f\xff\xb1\xfe\xea\xff\x73\x56\xff\xd7\x42\x77\xf5"
        "\xaf\xfc\x2c\xab\xbf\xcf\xa9\x71\xdf\xc9\xea\xbf\xab\xcb\xfa\x37\x9c"
        "\xff\xc9\xfe\xea\xff\x4b\xac\xff\x9e\xb8\x7d\xec\xcb\xdd\xd6\xdf\xfe"
        "\xfc\xa7\xf5\x76\xd2\x72\x38\x13\xd9\xf9\x4c\x96\xd4\xff\xd7\x7a\xfb"
        "\xf9\xa7\xb5\xfd\x7a\x3e\xff\x03\x3d\x9c\x74\x8b\x77\xe3\xf9\x03\x40"
        "\x15\xd5\x76\xbb\x01\x3b\x24\xf5\x12\x52\x3f\x3a\xf5\x43\x5a\xd7\xe7"
        "\x0b\x2d\xeb\xec\x85\xac\x7c\xb7\xfd\xff\x5a\x76\x9c\x7c\xbd\xbe\x7e"
        "\xa5\xe3\xa6\x7e\xd0\x17\xe3\x76\xea\xee\xa4\x75\x03\xf3\xf5\x0e\x7b"
        "\x6d\x7f\x5a\x9f\x70\x2a\x3b\x6e\xd1\x65\xbf\xb6\xec\xf5\x33\x2c\xff"
        "\x55\x2a\x6b\xff\x76\x3d\x8f\x3b\xad\xac\xfd\xf9\x7a\x90\x7b\x55\x59"
        "\xfb\xc7\x06\xdc\x8e\x7e\x95\xb5\x3f\xff\xbd\xdc\xab\xca\xda\xdf\xe7"
        "\x9f\x55\x03\x57\xd6\xfe\x89\x01\xb7\x63\x58\x1d\x8e\x69\xd9\xf5\x30"
        "\x5d\x7f\xa6\x62\x5e\xda\x6e\x64\xdb\x93\x9b\x3c\x17\xfb\xb5\x6f\x01"
        "\x00\xc3\xee\xdb\xa7\x6f\xde\x7f\xed\xeb\xa3\x37\xf2\xf5\xf9\xd3\x75"
        "\x3d\xfd\x19\x38\x19\xff\xa6\xbe\x9e\x95\xcb\xfb\x0b\x13\x59\xdf\xb1"
        "\xc8\xca\x7f\x29\xa6\x3f\x8e\xe9\x2b\x31\xfd\x4d\x4c\xdf\xc9\x8e\xb7"
        "\xb3\xff\x6d\x03\x80\x6a\x7a\xcf\xe7\xff\x84\x10\x42\x88\xca\x45\xd5"
        "\x3f\xff\xe7\xfe\x02\x55\x56\xf5\xd7\x7f\xd5\xcf\xbf\xda\xef\xfe\x9e"
        "\xff\x4e\xd2\xeb\x23\xbf\x8f\x9f\x8c\x76\xc8\xaf\xb7\xe4\x8f\x6c\x92"
        "\x3f\xd6\xe1\xf1\xe3\x59\x7e\xfe\x7c\x1d\xe8\x90\x7f\x4f\x76\xdc\x95"
        "\x28\xe5\x7f\xa6\x43\xfe\x67\x3b\xe4\x7f\xae\x43\xfe\x4c\x87\xfc\x43"
        "\x1d\xf2\xef\xed\x90\x7f\xb8\x43\xfe\x17\x3a\xe4\x1f\xe9\x90\x7f\xb4"
        "\x43\x3e\x00\xc3\xe9\xf3\x31\xf5\xfe\x0e\x00\xd5\x91\x8f\xfb\x73\xfd"
        "\x07\x80\xfd\x2f\x4d\xac\xe3\xfa\x0f\x00\xd5\xf1\xa9\x98\x96\x5d\xff"
        "\xef\xeb\x90\x0f\x00\x0c\x9f\x4f\xc7\xd4\xf5\x1d\x00\x2a\xa4\xd8\x7c"
        "\xa6\xc7\xad\xce\xdb\x03\x0c\x8f\x34\xbf\x74\xfa\x3d\x8f\xcb\x81\x84"
        "\xfb\x63\xfa\x95\x98\x7e\x35\xa6\x69\xbd\x94\x3e\x97\x5f\x01\xf6\x80"
        "\xff\xfe\xfb\xd7\x7f\xbb\x56\xac\xcf\xf7\x77\x38\xcb\xef\x76\x3e\xf9"
        "\xa2\xd6\xfe\xc9\xbb\x7c\xfd\x9f\x07\xba\x6c\x4f\xfe\xf9\xbd\x5e\xe7"
        "\xb3\x6f\x74\x59\xcf\x4e\xd5\x3f\xbd\xc5\xfa\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"
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        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x18\xac\xda\xea\xd7\xc5\xc5\x99\x22\x84\x97\x5e\x7f"
        "\xf1\x91\x7f\x9e\xfa\xd3\xbb\x45\x08\xe1\x68\xb3\x44\xa3\xa5\xdc\xda"
        "\x56\xbd\x65\x7b\xb6\xed\x38\x21\xbc\x56\xac\xa5\x1f\x7f\xf8\xec\xb9"
        "\xd6\xf4\x93\x98\x16\x61\x3e\x14\xa1\x68\xee\x0f\x67\x6f\x37\x6b\x9a"
        "\x0c\x21\x5c\x0d\xb3\xe1\x46\x68\x84\x85\xf7\x1f\x9b\x7b\x73\x69\xe9"
        "\xe5\xeb\x37\x1f\xbd\x3c\xfd\xc2\xe9\xb7\x77\xf0\x47\x00\x00\x00\x00"
        "\xfb\xde\xff\x02\x00\x00\xff\xff\x3b\xfa\x39\x04",
        2562);
    syz_mount_image(/*fs=*/0x200000000380, /*dir=*/0x200000000a40, /*flags=*/0,
                    /*opts=*/0x200000000100, /*chdir=*/0xd, /*size=*/0xa02,
                    /*img=*/0x200000000a80);
    break;
  case 1:
    //  openat arguments: [
    //    fd: fd_dir (resource)
    //    file: ptr[in, buffer] {
    //      buffer: {2e 00} (length 0x2)
    //    }
    //    flags: open_flags = 0x80 (4 bytes)
    //    mode: open_mode = 0x0 (2 bytes)
    //  ]
    //  returns fd
    memcpy((void*)0x200000000000, ".\000", 2);
    res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000000ul,
                  /*flags=O_EXCL*/ 0x80, /*mode=*/0);
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    //  ioctl$NILFS_IOCTL_CLEAN_SEGMENTS arguments: [
    //    fd: fd (resource)
    //    cmd: const = 0x40786e88 (4 bytes)
    //    arg: ptr[in, nilfs_ioctl_clean_segments_args] {
    //      nilfs_ioctl_clean_segments_args {
    //        argv0: nilfs_argv_typed[nilfs_vdesc, in, NILFS_VDESC_SIZE] {
    //          v_base: ptr[in, array[nilfs_vdesc]] {
    //            array[nilfs_vdesc] {
    //              nilfs_vdesc {
    //                vd_ino: int64 = 0x3 (8 bytes)
    //                vd_cno: int64 = 0x0 (8 bytes)
    //                vd_vblocknr: int64 = 0x9 (8 bytes)
    //                vd_period: nilfs_period {
    //                  p_start: int64 = 0xfffffffffffffff7 (8 bytes)
    //                  p_end: int64 = 0x2 (8 bytes)
    //                }
    //                vd_blocknr: int64 = 0x58 (8 bytes)
    //                vd_offset: int64 = 0xffffffffffffc (8 bytes)
    //                vd_flags: int32 = 0x0 (4 bytes)
    //                vd_pad: const = 0x0 (4 bytes)
    //              }
    //            }
    //          }
    //          v_nmembs: len = 0x1 (4 bytes)
    //          v_size: const = 0x40 (2 bytes)
    //          v_flags: int16 = 0xbe43 (2 bytes)
    //          v_index: int64 = 0xde (8 bytes)
    //        }
    //        argv1: nilfs_argv_typed[nilfs_period, in, NILFS_PERIOD_SIZE] {
    //          v_base: nil
    //          v_nmembs: len = 0x0 (4 bytes)
    //          v_size: const = 0x10 (2 bytes)
    //          v_flags: int16 = 0x2 (2 bytes)
    //          v_index: int64 = 0x8 (8 bytes)
    //        }
    //        argv2: nilfs_argv_typed[int64, in, 8] {
    //          v_base: nil
    //          v_nmembs: len = 0x0 (4 bytes)
    //          v_size: const = 0x8 (2 bytes)
    //          v_flags: int16 = 0x4 (2 bytes)
    //          v_index: int64 = 0x3 (8 bytes)
    //        }
    //        argv3: nilfs_argv_typed[nilfs_bdesc, in, NILFS_BDESC_SIZE] {
    //          v_base: nil
    //          v_nmembs: len = 0x0 (4 bytes)
    //          v_size: const = 0x28 (2 bytes)
    //          v_flags: int16 = 0x9 (2 bytes)
    //          v_index: int64 = 0x0 (8 bytes)
    //        }
    //        argv4: nilfs_argv_typed[int64, in, 8] {
    //          v_base: ptr[in, array[int64]] {
    //            array[int64] {
    //              int64 = 0x9 (8 bytes)
    //            }
    //          }
    //          v_nmembs: len = 0x1 (4 bytes)
    //          v_size: const = 0x8 (2 bytes)
    //          v_flags: int16 = 0x98f (2 bytes)
    //          v_index: int64 = 0x8 (8 bytes)
    //        }
    //      }
    //    }
    //  ]
    *(uint64_t*)0x200000000040 = 0x200000000280;
    *(uint64_t*)0x200000000280 = 3;
    *(uint64_t*)0x200000000288 = 0;
    *(uint64_t*)0x200000000290 = 9;
    *(uint64_t*)0x200000000298 = 0xfffffffffffffff7;
    *(uint64_t*)0x2000000002a0 = 2;
    *(uint64_t*)0x2000000002a8 = 0x58;
    *(uint64_t*)0x2000000002b0 = 0xffffffffffffc;
    *(uint32_t*)0x2000000002b8 = 0;
    *(uint32_t*)0x2000000002bc = 0;
    *(uint32_t*)0x200000000048 = 1;
    *(uint16_t*)0x20000000004c = 0x40;
    *(uint16_t*)0x20000000004e = 0xbe43;
    *(uint64_t*)0x200000000050 = 0xde;
    *(uint64_t*)0x200000000058 = 0;
    *(uint32_t*)0x200000000060 = 0;
    *(uint16_t*)0x200000000064 = 0x10;
    *(uint16_t*)0x200000000066 = 2;
    *(uint64_t*)0x200000000068 = 8;
    *(uint64_t*)0x200000000070 = 0;
    *(uint32_t*)0x200000000078 = 0;
    *(uint16_t*)0x20000000007c = 8;
    *(uint16_t*)0x20000000007e = 4;
    *(uint64_t*)0x200000000080 = 3;
    *(uint64_t*)0x200000000088 = 0;
    *(uint32_t*)0x200000000090 = 0;
    *(uint16_t*)0x200000000094 = 0x28;
    *(uint16_t*)0x200000000096 = 9;
    *(uint64_t*)0x200000000098 = 0;
    *(uint64_t*)0x2000000000a0 = 0x2000000003c0;
    *(uint64_t*)0x2000000003c0 = 9;
    *(uint32_t*)0x2000000000a8 = 1;
    *(uint16_t*)0x2000000000ac = 8;
    *(uint16_t*)0x2000000000ae = 0x98f;
    *(uint64_t*)0x2000000000b0 = 8;
    syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x40786e88,
            /*arg=*/0x200000000040ul);
    break;
  case 3:
    //  syz_mount_image$vfat arguments: [
    //    fs: ptr[in, buffer] {
    //      buffer: {76 66 61 74 00} (length 0x5)
    //    }
    //    dir: 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 61 00} (length 0xfd)
    //    }
    //    flags: mount_flags = 0x182407b (8 bytes)
    //    opts: nil
    //    chdir: int8 = 0x1 (1 bytes)
    //    size: len = 0x0 (8 bytes)
    //    img: ptr[in, buffer] {
    //      buffer: (compressed buffer with length 0x0)
    //    }
    //  ]
    //  returns fd_dir
    memcpy((void*)0x200000000080, "vfat\000", 5);
    memcpy((void*)0x200000000340,
           "./"
           "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
           "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
           "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
           "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000",
           253);
    syz_mount_image(
        /*fs=*/0x200000000080, /*dir=*/0x200000000340,
        /*flags=MS_I_VERSION|MS_UNBINDABLE|MS_REC|MS_SYNCHRONOUS|MS_STRICTATIME|MS_REMOUNT|0x4b*/
        0x182407b, /*opts=*/0, /*chdir=*/1, /*size=*/0, /*img=*/0x200000000140);
    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;
  for (procid = 0; procid < 4; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      loop();
    }
  }
  sleep(1000000);
  return 0;
}