// https://syzkaller.appspot.com/bug?id=a5a37263bb85dee61db538cb371cf86af5e6ac70
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.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/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 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")) {
  }
}

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_one(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  syz_mount_image$ext4 arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {65 78 74 34 00} (length 0x5)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    flags: mount_flags = 0xe (8 bytes)
  //    opts: ptr[in, fs_options[ext4_options]] {
  //      fs_options[ext4_options] {
  //        elems: array[fs_opt_elem[ext4_options]] {
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              journal_ioprio: fs_opt["journal_ioprio", fmt[hex, int32[0:7]]]
  //              {
  //                name: buffer: {6a 6f 75 72 6e 61 6c 5f 69 6f 70 72 69 6f}
  //                (length 0xe) eq: const = 0x3d (1 bytes) val: int32 = 0x1 (18
  //                bytes)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              nouid32: buffer: {6e 6f 75 69 64 33 32} (length 0x7)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              debug_want_extra_isize: fs_opt["debug_want_extra_isize",
  //              fmt[hex, int32]] {
  //                name: buffer: {64 65 62 75 67 5f 77 61 6e 74 5f 65 78 74 72
  //                61 5f 69 73 69 7a 65} (length 0x16) eq: const = 0x3d (1
  //                bytes) val: int32 = 0x68 (18 bytes)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              lazytime: buffer: {6c 61 7a 79 74 69 6d 65} (length 0x8)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              nombcache: buffer: {6e 6f 6d 62 63 61 63 68 65} (length 0x9)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              inode_readahead_blks: fs_opt["inode_readahead_blks", fmt[hex,
  //              flags[ext4_inode_readahead_blks]]] {
  //                name: buffer: {69 6e 6f 64 65 5f 72 65 61 64 61 68 65 61 64
  //                5f 62 6c 6b 73} (length 0x14) eq: const = 0x3d (1 bytes)
  //                val: ext4_inode_readahead_blks = 0x4000000 (18 bytes)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              noquota: buffer: {6e 6f 71 75 6f 74 61} (length 0x7)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //    chdir: int8 = 0x1 (1 bytes)
  //    size: len = 0x440 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x440)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x200000000240, "ext4\000", 5);
  memcpy((void*)0x200000000000, "./bus\000", 6);
  memcpy((void*)0x2000000000c0, "journal_ioprio", 14);
  *(uint8_t*)0x2000000000ce = 0x3d;
  sprintf((char*)0x2000000000cf, "0x%016llx", (long long)1);
  *(uint8_t*)0x2000000000e1 = 0x2c;
  memcpy((void*)0x2000000000e2, "nouid32", 7);
  *(uint8_t*)0x2000000000e9 = 0x2c;
  memcpy((void*)0x2000000000ea, "debug_want_extra_isize", 22);
  *(uint8_t*)0x200000000100 = 0x3d;
  sprintf((char*)0x200000000101, "0x%016llx", (long long)0x68);
  *(uint8_t*)0x200000000113 = 0x2c;
  memcpy((void*)0x200000000114, "lazytime", 8);
  *(uint8_t*)0x20000000011c = 0x2c;
  memcpy((void*)0x20000000011d, "nombcache", 9);
  *(uint8_t*)0x200000000126 = 0x2c;
  memcpy((void*)0x200000000127, "inode_readahead_blks", 20);
  *(uint8_t*)0x20000000013b = 0x3d;
  sprintf((char*)0x20000000013c, "0x%016llx", (long long)0x4000000);
  *(uint8_t*)0x20000000014e = 0x2c;
  memcpy((void*)0x20000000014f, "noquota", 7);
  *(uint8_t*)0x200000000156 = 0x2c;
  *(uint8_t*)0x200000000157 = 0;
  memcpy(
      (void*)0x200000000780,
      "\x78\x9c\xec\xdb\xcb\x6f\x1b\xc5\x1f\x00\xf0\xef\xda\x49\xfa\xeb\xeb\x97"
      "\x50\x95\x47\x1f\x40\xa0\x20\xca\x2b\x69\xd2\x52\x7a\xe0\x02\x02\x89\x03"
      "\x48\x48\x70\x28\xc7\x90\xa4\x55\xa8\xdb\xa0\x26\x48\xb4\x8a\x20\x20\x54"
      "\x8e\xa8\x12\x27\x2e\x88\x23\x12\x7f\x01\x27\xb8\x20\xe0\x84\xc4\x15\xee"
      "\xa8\x52\x85\x72\x69\xe1\x64\xb4\xf6\x6e\x62\x3b\xb6\x1b\xa7\x4e\x5c\xea"
      "\xcf\x47\x5a\x77\x66\x77\xdc\x99\xaf\x77\xc7\x9e\xd9\xc9\x06\xd0\xb7\x46"
      "\xd3\x97\x24\x62\x4f\x44\xfc\x1e\x11\xc3\xd5\x6c\x7d\x81\xd1\xea\x3f\x37"
      "\x57\x96\xa6\xff\x5e\x59\x9a\x4e\xa2\x5c\x7e\xf3\xaf\xa4\x52\xee\xc6\xca"
      "\xd2\x74\x5e\x34\x7f\xdf\xee\x3c\x33\x10\x51\xf8\x34\x89\x43\x4d\xea\x5d"
      "\xb8\x74\xf9\xdc\x54\xa9\x34\x7b\x31\xcb\x8f\x2f\x9e\x7f\x6f\x7c\xe1\xd2"
      "\xe5\x67\xe7\xce\x4f\x9d\x9d\x3d\x3b\x7b\x61\xf2\xd4\xa9\x13\xc7\x27\x9e"
      "\x3f\x39\xf9\x5c\x57\xe2\x4c\xe3\xba\x71\xf0\xc3\xf9\xc3\x07\x5e\x7d\xfb"
      "\xea\xeb\xd3\xa7\xaf\xbe\xf3\xf3\xb7\x49\x1e\x7f\x43\x1c\x5d\x32\xda\xee"
      "\xe0\xe3\xe5\x72\x97\xab\xeb\xad\xbd\x35\xe9\x64\xa0\x87\x0d\xa1\x23\xc5"
      "\x6a\x37\x8d\xc1\x4a\xff\x1f\x8e\x62\xac\x9d\xbc\xe1\x78\xe5\x93\x9e\x36"
      "\x0e\xd8\x52\xe5\x72\xb9\x7c\x5f\xeb\xc3\xcb\x65\xe0\x2e\x96\x44\xaf\x5b"
      "\x00\xf4\x46\xfe\x43\x9f\xce\x7f\xf3\x6d\x9b\x86\x1e\x77\x84\xeb\x2f\x56"
      "\x27\x40\x69\xdc\x37\xb3\xad\x7a\x64\x20\x0a\x59\x99\xc1\x86\xf9\x6d\x37"
      "\x8d\x46\xc4\xe9\xe5\x7f\xbe\x4a\xb7\xd8\x9a\xfb\x10\x00\x00\x75\xbe\x4f"
      "\xc7\x3f\xcf\x34\x1b\xff\x15\xa2\xf6\xbe\xd0\xff\xb3\x35\x94\x91\x88\xb8"
      "\x27\x22\xf6\x45\xc4\xc9\x88\xd8\x1f\x11\xf7\x46\x54\xca\xde\x1f\x11\x0f"
      "\x74\x58\x7f\xe3\x22\xc9\xfa\xf1\x4f\xe1\xda\xa6\x02\xdb\xa0\x74\xfc\xf7"
      "\x42\xb6\xb6\x55\x3f\xfe\xcb\x47\x7f\x31\x52\xcc\x72\x7b\x2b\xf1\x0f\x26"
      "\x67\xe6\x4a\xb3\xc7\xb2\xcf\xe4\x68\x0c\xee\x48\xf3\x13\x6d\xea\xf8\xe1"
      "\xe5\xdf\x3e\x6f\x75\xac\x76\xfc\x97\x6e\x69\xfd\xf9\x58\x30\x6b\xc7\xb5"
      "\x81\x1d\xf5\xef\x99\x99\x5a\x9c\xba\x9d\x98\x6b\x5d\xff\x38\xe2\xe0\x40"
      "\xb3\xf8\x93\xd5\x95\x80\x24\x22\x0e\x44\xc4\xc1\x4d\xd6\x31\xf7\xd4\x37"
      "\x87\x5b\x1d\xbb\x75\xfc\x6d\x74\x61\x9d\xa9\xfc\x75\xc4\x13\xd5\xf3\xbf"
      "\x1c\x0d\xf1\xe7\x92\xf6\xeb\x93\xe3\xff\x8b\xd2\xec\xb1\xf1\xfc\xaa\x58"
      "\xef\x97\x5f\xaf\xbc\xd1\xaa\xfe\xdb\x8a\xbf\x0b\xd2\xf3\xbf\xab\xe9\xf5"
      "\xbf\x1a\xff\x48\x52\xbb\x5e\xbb\xd0\xc9\xff\xfe\xe5\x93\xe9\xeb\x95\x3f"
      "\x3e\x6b\x39\xa7\xd9\xec\xf5\x3f\x94\xbc\x55\xb7\xef\x83\xa9\xc5\xc5\x8b"
      "\x13\x11\x43\xc9\x6b\xd5\x46\xd7\xee\x9f\x6c\x28\x37\xb9\x56\x3e\x8d\xff"
      "\xe8\x91\xe6\xfd\x7f\x5f\xac\x7d\x12\x87\x22\x22\xbd\x88\x1f\x8c\x88\x87"
      "\x22\xe2\xe1\xac\xed\x8f\x44\xc4\xa3\x11\x71\xa4\xcd\xa7\xf0\xd3\x4b\x8f"
      "\xbd\xbb\xf9\xf8\xb7\x56\x1a\xff\x4c\x47\xe7\x7f\x2d\x31\x14\x8d\x7b\x9a"
      "\x27\x8a\xe7\x7e\xfc\xae\xae\xd2\x91\x4e\xe2\x4f\xcf\xff\x89\x4a\xea\x68"
      "\xb6\x67\x23\xdf\x7f\x1b\x69\x57\xa7\x57\x33\x00\x00\x00\xfc\x57\x15\x22"
      "\x62\x4f\x24\x85\xb1\xd5\x74\xa1\x30\x36\x56\xfd\x1b\xfe\xfd\xb1\xab\x50"
      "\x9a\x5f\x58\x7c\xfa\xcc\xfc\xfb\x17\x66\xaa\xcf\x08\x8c\xc4\x60\x21\xbf"
      "\xd3\x35\x5c\x73\x3f\x74\x22\x9b\xd6\xe7\xf9\xc9\x86\xfc\xf1\xec\xbe\xf1"
      "\x17\xc5\x9d\x95\xfc\xd8\xf4\x7c\x69\xa6\xd7\xc1\x43\x9f\xdb\xdd\xa2\xff"
      "\xa7\xfe\x2c\xf6\xba\x75\xc0\x96\xf3\xbc\x16\xf4\x2f\xfd\x1f\xfa\x97\xfe"
      "\x0f\xfd\x4b\xff\x87\xfe\xd5\xa4\xff\xef\xec\x45\x3b\x80\xed\xd7\xec\xf7"
      "\xff\xa3\x1e\xb4\x03\xd8\x7e\x0d\xfd\xdf\xb2\x1f\xf4\x11\xf3\x7f\xe8\x5f"
      "\x9b\xe9\xff\xbe\x33\xe0\xee\xd0\xb6\x2f\x0f\x6d\x5f\x3b\x80\x6d\xb5\xb0"
      "\x33\x6e\xfd\x90\xbc\x84\xc4\xba\x44\x14\xee\x88\x66\x48\x6c\x51\xa2\xd7"
      "\xdf\x4c\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xdd\xf1\x6f\x00"
      "\x00\x00\xff\xff\x9f\x0f\xe7\xa2",
      1088);
  syz_mount_image(/*fs=*/0x200000000240, /*dir=*/0x200000000000,
                  /*flags=MS_NOSUID|MS_NOEXEC|MS_NODEV*/ 0xe,
                  /*opts=*/0x2000000000c0, /*chdir=*/1, /*size=*/0x440,
                  /*img=*/0x200000000780);
  //  setxattr$incfs_metadata arguments: [
  //    path: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    name: ptr[in, buffer] {
  //      buffer: {75 73 65 72 2e 69 6e 63 66 73 2e 6d 65 74 61 64 61 74 61 00}
  //      (length 0x14)
  //    }
  //    val: ptr[in, buffer] {
  //      buffer: {c1 04 e8 87 f4 b3 fd 5a af 62 fb 50 c4 9b db 48 b9 e1 14 f3
  //      d9 f2 c4 76 a7 49 08 6b c3 19 cc 93 51 6a f4 80 4e 1f 5f 7d 21 28 50
  //      33 29 c8 85 7b 71 6b ba 99 f7 78 29 33 b9 b8 5f 06 b6 82 57 8c 89 df
  //      53 e5 c8 86 5d 17 34 d9 07 a1 c7 59 cd f4 8e e2 ee 8e 3c 20 4c 47 11
  //      95 0d b0 3c 0b ed 36 f7 e9 da 42 11 7d 7a 0c a8 ff d3 81 02 4e 93 d3
  //      8a 97 fd 18 5d 35 57 9c 1c a1 84 69 8c 86 51 da 27 96 40 f7 10 af c4
  //      99 bf 60 3d f8 1b e9 84 85 1f 96 d5 3e e2 1b a6 75 46 c3 ef dc b3 c6
  //      fa 02 b1 33 84 e1 25 33 ab 74 ba 19 59 2c a9 ac f3 4a ce 38 11 c3 3e
  //      5e 48 a6 12 f7 3e d1 db 55 52 8d 99 de 81 61 88 13 b6 2b a6 25 b1 ce
  //      a2 96 f5 f6 ea 41 df 83 a6 72 cc 86 44 1a 75 bc 6e 3c 95 38 3b ba 8c
  //      41 85 5d 87 37 0c 41 dd 6a c1 00 2b b8 8f 9d c8 7d 6d cd dd d7 c0 2e
  //      e9 2d e9 12 a2 64 84 69 f7 aa ec 56 43 1e cf 81 ef dd 09 46 32 bc 49
  //      3c 79 5d f3 ae 29 51 fa 9d b3 da 77 88 86 ad ae cd 8b ef a9 7e 5b 39
  //      67 8c 1d e4 ee 49 96 d4 b1 fc fc 89 97 8d 63 89 c2 a2 ed 0b e5 c4 97
  //      b8 04 2e cb 2b 8b ec c0 9b 41 54 20 52 a8 f9 93 0f e0 5a 35 ce 06 db
  //      36 bd 7e c4 13 c0 f7 1e 80 39 b4 18 a5 01 42 df de de ea 53 2a 32 1d
  //      63 e0 1d 27 68 07 59 10 b1 f4 14 53 ca e7 32 00 5c f8 56 21 56 5f 43
  //      15 aa bb 2b 05 82 9e 06 0e de ec 97 1e 32 23 c7 42 aa 51 ee 09 09 df
  //      f0 ea f1 ad ed 61 02 5a 4f 2a 11 fb 30 fd 29 98 e9 26 13 6a 82 50 ae
  //      3e 06 54 8f 90 a1 9f 35 48 b5 e2 dd f0 8a 98 ef 3f f6 78 66 88 ac ab
  //      60 e3 e6 e4 80 dc 61 2b 16 22 e0 b3 6d ee fc ac b9 00 17 2a 05 66 9b
  //      f7 be cc 20 1f ad c6 5c a7 b0 c4 e7 af 33 fa ec 73 f7 b2 6d 52 d9 b9
  //      34 e7 4c cb 96 18 94 b8 aa 84 5f 87 5e b5 3a ad 82 e2 0e 8c 29 96 32
  //      67 cb d1 47 8b 68 eb c7 59 fe c9 0b 89 ec 8f 4c 10 fd b5 bc dd b7 b1
  //      87 d3 6d fe 64 29 d5 ff ab 22 b9 46 a1 86 4b 28 40 2e b4 0f 18 34 80
  //      5f e3 c4 54 9e a7 b3 97 df df 1f fd dd 58 d1 97 a3 97 eb d2 d7 4f 86
  //      55 00 eb f1 00 69 92 3b 3f 3b fe 12 55 13 c8 e2 29 82 04 36 e5 1f 7a
  //      15 d7 5b d3 67 3a 1b c8 0b 7e f4 07 56 85 28 f3 be ee 4c ea f7 32 87
  //      1b e8 56 79 70 2e 16 3c a3 fd 11 fb 86 d8 69 c2 db f0 57 bb 3e de 74
  //      e3 65 88 54 88 66 6a 76 77 71 18 ec 4d 9f c2 85 c8 11 ab a7 49 b8 e5
  //      3b d0 4f 91 96 6f 77 58 0c c5 0b d9 d4 f5 13 49 61 6c 2b f0 50 84 ce
  //      9c 38 a0 72 b6 4a 04 75 b1 7a 22 95 08 9d 2b d0 02 a5 4e 30 ca 70 6c
  //      35 5a 03 f8 6b 0d 33 8f 77 07 ad 5d e9 b1 1c 00 af 8b 85 31 cd fd af
  //      3b c5 23 0c 20 97 8d 77 ae a9 35 ac 20 f8 d9 d7 a1 fd 4d 74 4e 41 79
  //      74 42 0b df 87 e3 96 22 c6 bd fd e0 c0 79 21 e0 68 7f e9 c0 00 a9 53
  //      a9 14 7c a1 f3 00 24 7a da 2b 82 85 42 fa 3e 95 40 84 2a 7d 0e 18 87
  //      73 20 98 12 94 e3 5d 74 d2 e2 0c a8 af 77 3a f6 ec 83 f6 80 8b 9c 54
  //      f2 66 24 20 65 bc b6 df 2c c6 85 ba aa 46 fb 70 3c cf fa 72 ac 43 0a
  //      c1 82 59 6f 45 86 6e ba 5b 91 8d} (length 0x372)
  //    }
  //    size: bytesize = 0x372 (8 bytes)
  //    flags: setxattr_flags = 0x0 (8 bytes)
  //  ]
  memcpy((void*)0x200000000100, "./file1\000", 8);
  memcpy((void*)0x200000000140, "user.incfs.metadata\000", 20);
  memcpy(
      (void*)0x200000000e80,
      "\xc1\x04\xe8\x87\xf4\xb3\xfd\x5a\xaf\x62\xfb\x50\xc4\x9b\xdb\x48\xb9\xe1"
      "\x14\xf3\xd9\xf2\xc4\x76\xa7\x49\x08\x6b\xc3\x19\xcc\x93\x51\x6a\xf4\x80"
      "\x4e\x1f\x5f\x7d\x21\x28\x50\x33\x29\xc8\x85\x7b\x71\x6b\xba\x99\xf7\x78"
      "\x29\x33\xb9\xb8\x5f\x06\xb6\x82\x57\x8c\x89\xdf\x53\xe5\xc8\x86\x5d\x17"
      "\x34\xd9\x07\xa1\xc7\x59\xcd\xf4\x8e\xe2\xee\x8e\x3c\x20\x4c\x47\x11\x95"
      "\x0d\xb0\x3c\x0b\xed\x36\xf7\xe9\xda\x42\x11\x7d\x7a\x0c\xa8\xff\xd3\x81"
      "\x02\x4e\x93\xd3\x8a\x97\xfd\x18\x5d\x35\x57\x9c\x1c\xa1\x84\x69\x8c\x86"
      "\x51\xda\x27\x96\x40\xf7\x10\xaf\xc4\x99\xbf\x60\x3d\xf8\x1b\xe9\x84\x85"
      "\x1f\x96\xd5\x3e\xe2\x1b\xa6\x75\x46\xc3\xef\xdc\xb3\xc6\xfa\x02\xb1\x33"
      "\x84\xe1\x25\x33\xab\x74\xba\x19\x59\x2c\xa9\xac\xf3\x4a\xce\x38\x11\xc3"
      "\x3e\x5e\x48\xa6\x12\xf7\x3e\xd1\xdb\x55\x52\x8d\x99\xde\x81\x61\x88\x13"
      "\xb6\x2b\xa6\x25\xb1\xce\xa2\x96\xf5\xf6\xea\x41\xdf\x83\xa6\x72\xcc\x86"
      "\x44\x1a\x75\xbc\x6e\x3c\x95\x38\x3b\xba\x8c\x41\x85\x5d\x87\x37\x0c\x41"
      "\xdd\x6a\xc1\x00\x2b\xb8\x8f\x9d\xc8\x7d\x6d\xcd\xdd\xd7\xc0\x2e\xe9\x2d"
      "\xe9\x12\xa2\x64\x84\x69\xf7\xaa\xec\x56\x43\x1e\xcf\x81\xef\xdd\x09\x46"
      "\x32\xbc\x49\x3c\x79\x5d\xf3\xae\x29\x51\xfa\x9d\xb3\xda\x77\x88\x86\xad"
      "\xae\xcd\x8b\xef\xa9\x7e\x5b\x39\x67\x8c\x1d\xe4\xee\x49\x96\xd4\xb1\xfc"
      "\xfc\x89\x97\x8d\x63\x89\xc2\xa2\xed\x0b\xe5\xc4\x97\xb8\x04\x2e\xcb\x2b"
      "\x8b\xec\xc0\x9b\x41\x54\x20\x52\xa8\xf9\x93\x0f\xe0\x5a\x35\xce\x06\xdb"
      "\x36\xbd\x7e\xc4\x13\xc0\xf7\x1e\x80\x39\xb4\x18\xa5\x01\x42\xdf\xde\xde"
      "\xea\x53\x2a\x32\x1d\x63\xe0\x1d\x27\x68\x07\x59\x10\xb1\xf4\x14\x53\xca"
      "\xe7\x32\x00\x5c\xf8\x56\x21\x56\x5f\x43\x15\xaa\xbb\x2b\x05\x82\x9e\x06"
      "\x0e\xde\xec\x97\x1e\x32\x23\xc7\x42\xaa\x51\xee\x09\x09\xdf\xf0\xea\xf1"
      "\xad\xed\x61\x02\x5a\x4f\x2a\x11\xfb\x30\xfd\x29\x98\xe9\x26\x13\x6a\x82"
      "\x50\xae\x3e\x06\x54\x8f\x90\xa1\x9f\x35\x48\xb5\xe2\xdd\xf0\x8a\x98\xef"
      "\x3f\xf6\x78\x66\x88\xac\xab\x60\xe3\xe6\xe4\x80\xdc\x61\x2b\x16\x22\xe0"
      "\xb3\x6d\xee\xfc\xac\xb9\x00\x17\x2a\x05\x66\x9b\xf7\xbe\xcc\x20\x1f\xad"
      "\xc6\x5c\xa7\xb0\xc4\xe7\xaf\x33\xfa\xec\x73\xf7\xb2\x6d\x52\xd9\xb9\x34"
      "\xe7\x4c\xcb\x96\x18\x94\xb8\xaa\x84\x5f\x87\x5e\xb5\x3a\xad\x82\xe2\x0e"
      "\x8c\x29\x96\x32\x67\xcb\xd1\x47\x8b\x68\xeb\xc7\x59\xfe\xc9\x0b\x89\xec"
      "\x8f\x4c\x10\xfd\xb5\xbc\xdd\xb7\xb1\x87\xd3\x6d\xfe\x64\x29\xd5\xff\xab"
      "\x22\xb9\x46\xa1\x86\x4b\x28\x40\x2e\xb4\x0f\x18\x34\x80\x5f\xe3\xc4\x54"
      "\x9e\xa7\xb3\x97\xdf\xdf\x1f\xfd\xdd\x58\xd1\x97\xa3\x97\xeb\xd2\xd7\x4f"
      "\x86\x55\x00\xeb\xf1\x00\x69\x92\x3b\x3f\x3b\xfe\x12\x55\x13\xc8\xe2\x29"
      "\x82\x04\x36\xe5\x1f\x7a\x15\xd7\x5b\xd3\x67\x3a\x1b\xc8\x0b\x7e\xf4\x07"
      "\x56\x85\x28\xf3\xbe\xee\x4c\xea\xf7\x32\x87\x1b\xe8\x56\x79\x70\x2e\x16"
      "\x3c\xa3\xfd\x11\xfb\x86\xd8\x69\xc2\xdb\xf0\x57\xbb\x3e\xde\x74\xe3\x65"
      "\x88\x54\x88\x66\x6a\x76\x77\x71\x18\xec\x4d\x9f\xc2\x85\xc8\x11\xab\xa7"
      "\x49\xb8\xe5\x3b\xd0\x4f\x91\x96\x6f\x77\x58\x0c\xc5\x0b\xd9\xd4\xf5\x13"
      "\x49\x61\x6c\x2b\xf0\x50\x84\xce\x9c\x38\xa0\x72\xb6\x4a\x04\x75\xb1\x7a"
      "\x22\x95\x08\x9d\x2b\xd0\x02\xa5\x4e\x30\xca\x70\x6c\x35\x5a\x03\xf8\x6b"
      "\x0d\x33\x8f\x77\x07\xad\x5d\xe9\xb1\x1c\x00\xaf\x8b\x85\x31\xcd\xfd\xaf"
      "\x3b\xc5\x23\x0c\x20\x97\x8d\x77\xae\xa9\x35\xac\x20\xf8\xd9\xd7\xa1\xfd"
      "\x4d\x74\x4e\x41\x79\x74\x42\x0b\xdf\x87\xe3\x96\x22\xc6\xbd\xfd\xe0\xc0"
      "\x79\x21\xe0\x68\x7f\xe9\xc0\x00\xa9\x53\xa9\x14\x7c\xa1\xf3\x00\x24\x7a"
      "\xda\x2b\x82\x85\x42\xfa\x3e\x95\x40\x84\x2a\x7d\x0e\x18\x87\x73\x20\x98"
      "\x12\x94\xe3\x5d\x74\xd2\xe2\x0c\xa8\xaf\x77\x3a\xf6\xec\x83\xf6\x80\x8b"
      "\x9c\x54\xf2\x66\x24\x20\x65\xbc\xb6\xdf\x2c\xc6\x85\xba\xaa\x46\xfb\x70"
      "\x3c\xcf\xfa\x72\xac\x43\x0a\xc1\x82\x59\x6f\x45\x86\x6e\xba\x5b\x91"
      "\x8d",
      882);
  syscall(__NR_setxattr, /*path=*/0x200000000100ul, /*name=*/0x200000000140ul,
          /*val=*/0x200000000e80ul, /*size=*/0x372ul, /*flags=*/0ul);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x109342 (4 bytes)
  //    mode: open_mode = 0x0 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000040, "./file1\000", 8);
  syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000040ul,
          /*flags=O_TRUNC|O_SYNC|O_NOCTTY|O_LARGEFILE|O_CREAT|O_RDWR*/ 0x109342,
          /*mode=*/0);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  use_temporary_dir();
  loop();
  return 0;
}