// https://syzkaller.appspot.com/bug?id=7846e0698b4f280c719f56111620205c475da907
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <setjmp.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/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>

#include <linux/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

static unsigned long long procid;

//% 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) {
    errno = EMSGSIZE;
    return -1;
  }
  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, 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 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, loopfd = -1, 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) {
    memset(loopname, 0, sizeof(loopname));
    snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
    if (setup_loop_device(data, size, loopname, &loopfd) == -1)
      return -1;
    source = loopname;
  }
  mkdir(target, 0777);
  char opts[256];
  memset(opts, 0, sizeof(opts));
  if (strlen(mount_opts) > (sizeof(opts) - 32)) {
  }
  strncpy(opts, mount_opts, sizeof(opts) - 32);
  if (strcmp(fs, "iso9660") == 0) {
    flags |= MS_RDONLY;
  } else if (strncmp(fs, "ext", 3) == 0) {
    if (strstr(opts, "errors=panic") || strstr(opts, "errors=remount-ro") == 0)
      strcat(opts, ",errors=continue");
  } else if (strcmp(fs, "xfs") == 0) {
    strcat(opts, ",nouuid");
  }
  res = mount(source, target, fs, flags, opts);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  res = open(target, O_RDONLY | O_DIRECTORY);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  if (change_dir) {
    res = chdir(target);
    if (res == -1) {
      err = errno;
    }
  }

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

int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);

  memcpy((void*)0x20000100, "./file1\000", 8);
  syscall(__NR_mkdirat, 0xffffff9c, 0x20000100ul, 0ul);
  memcpy((void*)0x20000080, "iso9660\000", 8);
  memcpy((void*)0x200000c0, "./file0\000", 8);
  memcpy(
      (void*)0x20001340,
      "\x78\x9c\xec\xdd\x4f\x6c\x1c\xe5\x15\x00\xf0\xb7\x26\x29\xa9\x91\x10\xa2"
      "\x55\x1a\x45\x21\x0c\x81\x4a\x41\x0a\x66\x77\x0d\x46\x16\x07\xba\xac\xc7"
      "\xf6\xc0\x7a\x67\x35\xb3\x46\x8e\xaa\x0a\x22\xe2\x20\x2b\x0e\x20\x52\xa4"
      "\xc6\x87\x42\x2e\xf4\x8f\x5a\x55\x3d\xf5\x48\xb9\x72\xeb\xad\x55\xa5\x56"
      "\xea\xa1\xed\xa9\x52\x7b\xed\x0d\x89\x5b\x69\xd5\x4a\xbd\x54\x95\x52\xed"
      "\xec\x3a\x38\x89\xed\x0d\x4e\x88\x51\xfa\xfb\xad\xf0\xf7\xed\xcc\x9b\x6f"
      "\xde\x0c\x9b\x79\x1e\xdb\x33\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x40\xd4\xda\x73\xf5\x7a\xa3\x16\x9d\xac\xbb\xbc\x92\xec\xac"
      "\x3d\x57\xe4\x4b\xbb\xcc\xdf\x1c\xef\xb7\xd7\x34\xbb\xac\x37\xa2\x36\xf8"
      "\x2f\x0e\x1d\x8a\x23\xc3\x49\x47\xbe\xfa\xe9\xec\xc3\x83\x2f\x27\xe2\xd8"
      "\xf0\xdd\xb1\x38\x34\x68\x0e\xc5\xc6\x7d\x87\x1f\x78\xf6\x2b\x07\x26\x36"
      "\x97\xdf\x25\xa1\x3b\xe2\xe2\xa5\x8d\xf3\x67\xd6\xd7\x57\xdf\xda\xef\x44"
      "\x6e\xcd\x0f\x7f\xbd\xc7\x05\x17\xd2\x6e\x56\xe6\xd9\x52\x6b\x21\x4d\xb2"
      "\x32\x4f\x66\x67\x66\xea\x4f\x2e\xce\x97\xc9\x7c\xd6\x49\xcb\xd3\x65\x3f"
      "\x5d\x4a\xda\x45\xda\xea\xe7\x45\x72\xb2\xfd\x78\xd2\x98\x9d\x9d\x4e\xd2"
      "\xa9\xd3\xf9\x72\x77\x61\xae\xd5\x49\x37\x27\x3e\xf3\x44\xb3\x5e\x9f\x49"
      "\x5e\x98\xea\xa5\xad\xa2\xcc\xbb\x4f\xbe\x30\x55\xb6\x17\xb3\x4e\x27\xeb"
      "\x2e\x54\x31\x83\xd9\x83\x98\x67\x06\x1f\xc4\x17\xb3\x7e\xd2\x4f\x5b\x4b"
      "\x49\x72\x6e\x6d\x7d\x75\x7a\x5c\x92\x83\xa0\xc6\x2e\xf3\x8f\x3d\xf6\xc0"
      "\xc7\x6f\x7f\xf4\xaf\xb5\xd5\xe6\xb8\x91\x9a\xf5\x66\xb3\xd1\x68\x36\x1b"
      "\x33\x4f\xcf\x3e\xfd\x4c\xbd\x7e\xe0\x86\x09\xf5\xeb\xc4\x0d\x11\xfb\xff"
      "\xa1\x65\x7f\xdd\xe6\x23\x38\xec\xdd\xc4\xa8\xfe\x47\x27\xb2\xe8\xc6\x72"
      "\xac\x44\xb2\xed\xab\x1d\x73\x51\x44\x1e\x4b\x3b\xcc\x1f\xd9\xac\xff\x5f"
      "\x7f\xf2\xef\x7f\xda\x6d\xbd\x5b\xeb\xff\x66\x95\x3f\xf2\xe9\xec\xa3\x51"
      "\xd5\xff\xe3\xc3\x77\xc7\x77\xaa\xff\x3b\xe4\x72\xe7\x5e\x17\xe3\x52\x6c"
      "\xc4\xf9\x38\x13\xeb\xb1\x1e\xab\xf1\xd6\xbe\x67\x34\xe6\x35\x71\x7b\xc7"
      "\x5b\x88\x34\xba\x91\x45\x19\x79\x64\xb1\x14\xad\x6a\x4a\x32\x9a\x92\xc4"
      "\x6c\xcc\xc4\x4c\xd4\xe3\xe5\x58\x8c\xf9\x28\x23\x89\xf9\xc8\xa2\x13\x69"
      "\x94\x71\x3a\xca\xe8\x47\x5a\x7d\xa2\xda\x51\x44\x1a\xad\xe8\x47\x1e\x45"
      "\x24\x71\x32\xda\xf1\x78\x24\xd1\x88\xd9\x98\x8d\xe9\x48\x22\x8d\xa9\x38"
      "\x1d\x79\x2c\x47\x37\x16\x62\x2e\x5a\xd5\x28\xe7\x62\xad\xda\xef\xd3\xd7"
      "\xe5\x75\xf8\xbb\xaf\xfc\xea\xb5\x3f\x7f\xfc\xfe\xa0\x7f\x35\xa8\xb1\xcb"
      "\x86\xd4\xde\x8d\xa8\x82\xfe\xb9\x4b\x90\xfa\xcf\xad\xfb\x1c\x8e\xe2\xb0"
      "\x37\x57\x36\xeb\x3f\x00\x00\x00\x70\xd7\xaa\x55\x3f\x7d\x1f\x9c\xff\x1f"
      "\x8c\x87\xaa\xde\x7c\xd6\x49\xbf\xb9\xdf\x69\x01\x00\x00\x00\xb7\x51\xf5"
      "\x9b\xff\x63\x83\xe6\xe0\xa0\xf7\x50\xd4\x06\xe7\xff\xf5\xfd\x4e\x0b\x00"
      "\x00\x00\xb8\x8d\x6a\xd5\x35\x76\xb5\x88\x98\x8c\x87\x87\xbd\xcd\xcb\xa5"
      "\xfc\x10\x00\x00\x00\x00\xee\x12\xd5\xef\xff\x8f\x0f\x9a\xc9\x88\x77\xaa"
      "\x09\xce\xff\x01\x00\x00\xe0\x2e\xf3\xfd\x9d\xee\xb1\xff\xd1\xe6\x3d\x76"
      "\xcb\xde\xbd\xb5\xdf\xfc\x23\x8a\xe2\x60\xed\x72\x6f\xe5\xb1\xda\x85\xd6"
      "\x20\xae\x75\xe1\x9e\xe1\x72\xa3\xe6\xa5\xab\x23\xf6\xe7\x8f\xd6\xee\x1f"
      "\x0d\x52\x35\x33\x07\x36\xee\xab\x45\xc4\x81\x76\x7a\xac\xb6\x79\xf7\xcb"
      "\xff\xde\x3b\x6c\x3f\xa9\xbe\x1e\x3d\x70\x75\xf1\x9d\xee\xf5\x5f\x1b\x93"
      "\x40\xec\x9e\x40\xf5\x2e\x7e\x14\x8f\x0c\x63\x1e\x39\x3b\x6c\xcf\x6e\xce"
      "\x19\xae\x65\x72\x3e\xeb\xa4\x53\xed\xbc\xf3\x6c\x23\x5a\xad\xfb\x27\xfa"
      "\xe9\x4a\xff\xed\xd7\xd7\xbe\x13\xd5\xe6\xff\xa0\xbb\x74\x7f\x2d\xce\xad"
      "\xad\xaf\x4e\xbd\xfa\xc6\xfa\xd9\x2a\x97\xcb\x83\x51\x2e\x5f\x18\xdd\x40"
      "\xf1\x86\xfb\x28\xee\x92\xcb\x95\xd1\x1e\x88\x87\xb6\xdf\xe2\x83\xd5\x85"
      "\x18\xa3\xf5\x4e\x0e\xd7\x5b\xdf\xba\xfd\x13\xc3\xc5\x27\x3e\xc3\x3a\xdf"
      "\x8b\x13\xc3\x98\x13\x93\xc3\x76\xf2\xda\xed\x3f\x34\x58\x67\x63\x6a\xa7"
      "\xad\x1f\x65\xd1\xb8\xc5\x2d\x7f\x2f\x1e\x1d\xc6\x3c\x7a\xf2\xd1\x61\xb3"
      "\x4d\x16\xcd\x71\x59\x34\xb7\x66\xb1\xa7\x7d\xb1\x6d\x16\xf1\x40\x44\xbc"
      "\xff\xc8\x3b\x2b\xff\xfe\x7d\x5e\x4b\xa7\xc7\x65\x31\x7d\x8b\x59\x00\xec"
      "\x97\x73\xd5\x5d\x7f\xae\xaf\x42\xff\xb9\x32\x34\xa8\xff\x37\xd4\xdd\x3d"
      "\x1c\xe5\xce\x8d\x7b\x92\xcf\x6d\xa9\xee\xef\xc5\xc9\x61\xcc\xc9\xe1\xf7"
      "\x13\x07\x8e\x6e\x53\x57\xea\xdb\x1c\xd1\xdf\x5c\x7b\xf3\x0f\xa3\x23\xfa"
      "\x53\x1f\xfe\xec\xe7\xdf\x3a\xfe\xc7\x5f\xec\xbd\xba\x7d\x18\x8f\x0f\x63"
      "\x46\x4d\x3c\xf8\xbb\xfb\x26\xa2\xca\xe2\xcb\xa3\x2c\x36\x46\x73\x8a\x83"
      "\xb5\x1f\x5f\x57\x55\x3f\x18\x4c\xff\x60\xc7\xf5\x96\x9d\x66\x6d\xb0\x0b"
      "\xef\xf9\xf6\x85\x37\xe3\xf0\xc5\x4b\x1b\x4f\xac\x5d\x38\xf3\xda\xea\x6b"
      "\xab\xaf\x37\x9b\xd3\x33\xf5\xa7\xea\xf5\xa7\x6b\x9b\x0b\x1d\xac\xbe\x63"
      "\x50\x7b\x00\xd8\xc6\xf8\x67\xec\x8c\x8d\xa8\x3d\x35\xe6\xac\xfa\xc1\xab"
      "\x7f\x52\x30\x15\xaf\xc6\x1b\xb1\x1e\x67\xe3\x54\x75\xb5\x41\x44\x3c\xbc"
      "\xfd\xa8\x93\x5b\xfe\x0c\xe1\xd4\x98\xb3\xd6\xc9\x2d\x4f\x78\x39\x35\xe6"
      "\xdc\xf2\xd3\xd8\xe6\x67\x88\x9d\xde\xb2\xc7\xbe\xf6\xd3\xcf\xf1\x7f\x07"
      "\x00\xdc\x11\x27\xc6\xd4\xe1\x9b\xa9\xff\xa7\xc6\x9c\x77\x5f\x5b\xcb\xaf"
      "\x3b\x3b\x8e\x9d\x6b\x39\x00\xf0\xf9\x48\x8b\x4f\x6a\x93\xfd\xef\xd5\x8a"
      "\x22\xeb\xbd\xdc\x98\x9d\x6d\xb4\xfa\x8b\x69\x52\xe4\xed\x17\x93\x22\x9b"
      "\x5b\x48\x93\xac\xdb\x4f\x8b\xf6\x62\xab\xbb\x90\x26\xbd\x22\xef\xe7\xed"
      "\xbc\x33\xe8\xbc\x94\xcd\xa5\x65\x52\x2e\xf7\x7a\x79\xd1\x4f\xe6\xf3\x22"
      "\xe9\xe5\x65\xb6\x52\x3d\xf9\x3d\x19\x3d\xfa\xbd\x4c\x97\x5a\xdd\x7e\xd6"
      "\x2e\x7b\x9d\xb4\x55\xa6\x49\x3b\xef\xf6\x5b\xed\x7e\x32\x97\x95\xed\xa4"
      "\xb7\xfc\x7c\x27\x2b\x17\xd3\xa2\x5a\xb8\xec\xa5\xed\x6c\x3e\x6b\xb7\xfa"
      "\x59\xde\x4d\xca\x7c\xb9\x68\xa7\x53\x49\x52\xa6\xe9\x96\xc0\x6c\x2e\xed"
      "\xf6\xb3\xf9\x6c\xd0\xed\x26\xbd\x22\x5b\x6a\x15\x97\x23\xa2\xb3\xbc\x94"
      "\x26\x73\x69\xd9\x2e\xb2\x5e\x3f\x1f\x0e\xb8\xb9\xae\xac\x3b\x9f\x17\x4b"
      "\xd5\xb0\x53\xfb\xbd\xb3\x01\xe0\x0b\xe2\xe2\xa5\x8d\xf3\x67\xd6\xd7\x57"
      "\xdf\xda\x5b\xe7\xaf\x37\x13\xbc\xdf\xdb\x08\x00\x5c\x4b\x95\x06\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x80\x2f\xbe\x5b\xbc\xfe\x4f\xe7\xff\xa1"
      "\x33\x11\x11\x5f\x80\x34\xf6\xd2\x79\xe5\xb9\xe7\xce\xef\x14\xf3\xfc\x3b"
      "\x47\x16\x6f\x6e\x9c\x9b\xfe\x97\x12\x11\xef\xfe\xed\x4b\xbf\xfc\xc9\x70"
      "\xca\x37\xee\xd4\x96\xfe\x25\x22\xf6\xb0\xf8\x95\xda\x2e\x31\xfb\x7d\x64"
      "\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x1b\xfd\x2f\x00\x00\xff\xff"
      "\x41\x3a\x66\xdc",
      1804);
  syz_mount_image(0x20000080, 0x200000c0, 4, 0x20000040, 0, 0x70c, 0x20001340);
  memcpy((void*)0x200000c0, "./bus\000", 6);
  syscall(__NR_mkdirat, 0xffffff9c, 0x200000c0ul, 0ul);
  memcpy((void*)0x20000040, "./bus\000", 6);
  memcpy((void*)0x200002c0, "overlay\000", 8);
  memcpy((void*)0x20000080,
         "workdir=./file1,lowerdir=./file0,upperdir=./bus,index=on", 56);
  syscall(__NR_mount, 0ul, 0x20000040ul, 0x200002c0ul, 0ul, 0x20000080ul);
  memcpy((void*)0x20000140, "./bus\000", 6);
  syscall(__NR_chdir, 0x20000140ul);
  memcpy((void*)0x20000000, "./file1\000", 8);
  memcpy((void*)0x20000880, "./bus\000", 6);
  syscall(__NR_link, 0x20000000ul, 0x20000880ul);
  return 0;
}