// https://syzkaller.appspot.com/bug?id=17d5679d9794704984443019d427f0edb86e2e4f
// 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 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;
}

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");
}

#define KMEMLEAK_FILE "/sys/kernel/debug/kmemleak"

static const char* setup_leak()
{
  if (!write_file(KMEMLEAK_FILE, "scan=off")) {
    if (errno == EBUSY)
      return "KMEMLEAK disabled: increase CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE"
             " or unset CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF";
    return "failed to write(kmemleak, \"scan=off\")";
  }
  if (!write_file(KMEMLEAK_FILE, "scan"))
    return "failed to write(kmemleak, \"scan\")";
  sleep(5);
  if (!write_file(KMEMLEAK_FILE, "scan"))
    return "failed to write(kmemleak, \"scan\")";
  if (!write_file(KMEMLEAK_FILE, "clear"))
    return "failed to write(kmemleak, \"clear\")";
  return NULL;
}

static void check_leaks(void)
{
  int fd = open(KMEMLEAK_FILE, O_RDWR);
  if (fd == -1)
    exit(1);
  uint64_t start = current_time_ms();
  if (write(fd, "scan", 4) != 4)
    exit(1);
  sleep(1);
  while (current_time_ms() - start < 4 * 1000)
    sleep(1);
  if (write(fd, "scan", 4) != 4)
    exit(1);
  static char buf[128 << 10];
  ssize_t n = read(fd, buf, sizeof(buf) - 1);
  if (n < 0)
    exit(1);
  int nleaks = 0;
  if (n != 0) {
    sleep(1);
    if (write(fd, "scan", 4) != 4)
      exit(1);
    if (lseek(fd, 0, SEEK_SET) < 0)
      exit(1);
    n = read(fd, buf, sizeof(buf) - 1);
    if (n < 0)
      exit(1);
    buf[n] = 0;
    char* pos = buf;
    char* end = buf + n;
    while (pos < end) {
      char* next = strstr(pos + 1, "unreferenced object");
      if (!next)
        next = end;
      char prev = *next;
      *next = 0;
      fprintf(stderr, "BUG: memory leak\n%s\n", pos);
      *next = prev;
      pos = next;
      nleaks++;
    }
  }
  if (write(fd, "clear", 5) != 5)
    exit(1);
  close(fd);
  if (nleaks)
    exit(1);
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      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;
    }
    check_leaks();
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  open arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    flags: open_flags = 0x60142 (8 bytes)
  //    mode: open_mode = 0x0 (8 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000000, "./bus\000", 6);
  syscall(__NR_open, /*file=*/0x200000000000ul,
          /*flags=O_NOFOLLOW|O_NOCTTY|O_NOATIME|O_CREAT|O_RDWR*/ 0x60142ul,
          /*mode=*/0ul);
  //  mount arguments: [
  //    src: ptr[in, blockdev_filename] {
  //      union blockdev_filename {
  //        loop: loop_filename {
  //          prefix: buffer: {2f 64 65 76 2f 6c 6f 6f 70} (length 0x9)
  //          id: proc = 0x0 (1 bytes)
  //          z: const = 0x0 (1 bytes)
  //        }
  //      }
  //    }
  //    dst: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    type: nil
  //    flags: mount_flags = 0x1000 (8 bytes)
  //    data: nil
  //  ]
  memcpy((void*)0x200000000380, "/dev/loop", 9);
  *(uint8_t*)0x200000000389 = 0x30;
  *(uint8_t*)0x20000000038a = 0;
  memcpy((void*)0x200000000140, "./bus\000", 6);
  syscall(__NR_mount, /*src=*/0x200000000380ul, /*dst=*/0x200000000140ul,
          /*type=*/0ul, /*flags=MS_BIND*/ 0x1000ul, /*data=*/0ul);
  //  open arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    flags: open_flags = 0x0 (8 bytes)
  //    mode: open_mode = 0x0 (8 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000200, "./bus\000", 6);
  res = syscall(__NR_open, /*file=*/0x200000000200ul, /*flags=*/0ul,
                /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  //  ioctl$BLKROSET arguments: [
  //    fd: fd_block (resource)
  //    cmd: const = 0x125d (4 bytes)
  //    arg: ptr[in, intptr] {
  //      intptr = 0x3f (8 bytes)
  //    }
  //  ]
  *(uint64_t*)0x200000000080 = 0x3f;
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x125d, /*arg=*/0x200000000080ul);
  //  syz_mount_image$hfs arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {68 66 73 00} (length 0x4)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {13 13 77 c5 fc 35 d4 14 54 d5 d4 1d 29 ad 1a 60 29 59 81 46
  //      e6 be 16 6e 41 ad 0d bd 40 54 03 3c 9f 33 bb da 82 24 a2 f3 d7 72 e7
  //      63 6e 48 b3 3c bf 70 83 72 e8 f1 b9 93 3e c5 12 77 43 be 22 06 20 9e
  //      f0 2d f9 cb f2 f6 e8 80 d3 38 2f 00} (length 0x4e)
  //    }
  //    flags: mount_flags = 0x30008c0 (8 bytes)
  //    opts: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYBLOB: buffer: {71 75 69 65 74 2c 63 6f 64 65 70 61 67 65 3d 64
  //          65 66 61 75 6c 74 2c 69 6f 63 68 61 72 73 65 74 3d 69 73 6f 38 38
  //          35 39 2d 33 2c 71 75 69 65 74 2c 70 61 72 74 3d 30 78 30 30 30 30
  //          30 30 30 30 30 30 30 30 30 30 30 35 2c 00 92 e7 36 59 b6 f1 9f bb
  //          e0 1b 9c c9 08 da b9 ad 4d 60 fd 5d 2f e7 f6 f2 a8 50 4d af 6c e2
  //          5e 47 cc d9 6d b7 58 f9 9c d3 94 ed ca cf 7d 66 41 56 5e b3 0f dd
  //          75 53 8e 1b 4b 26 85 6e 0d 8d 3d d5 69 68 71 fe a5 6b ef ab 9d 60
  //          54 e8 a3 d7 ec 6b 04 46 b9 85 4b e7 c5 47 de 0e 63 27 b2 6b 68 89
  //          27 c4 36 32 0b f5 a8 f3 da 0d 37 3f 12 3f 05 a7 c2 3b c4 4c b0 9b
  //          35 69 c1 a2 e6 a5 3d b8 5a 35 2c 84 d2 be 28 86 15 82 59 5b e3 00
  //          b4 0f 15 69 d4 2e 14 ad db eb d8 53 77 6f c5 f0 17 15 e8 5e ea a1
  //          88 00 2d 9d 98 f7 7b be cf 7e 07 5f 26 4e 05 2b b8 cd be 5d fa 46
  //          17 64 27 2d 3b b8 74 30 6c f0 96 2d e8 b6 67 98 43 88 93 4f b1 b4
  //          4c c5 55 06 45 50 a2 df 4e a5 3d 39 74 a6 52 e6 dc f8 ba 8b 52 64
  //          49 7e fd c5 3e c6 74 2c 9f ac 1e 40 6f 1e b7 cd 1c a3 ba af de e5
  //          c3 4f 59 97 5c 6c bf 06 80 de dc 70 db 5b 03 87 0a 1a} (length
  //          0x156)
  //        }
  //      }
  //    }
  //    chdir: int8 = 0x11 (1 bytes)
  //    size: len = 0x2c6 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x2c6)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x200000000040, "hfs\000", 4);
  memcpy((void*)0x200000000100,
         "\023\023w\305\3745\324\024T\325\324\035)\255\032`)"
         "Y\201F\346\276\026nA\255\r\275@T\003<\2373\273\332\202$"
         "\242\363\327r\347cnH\263<\277p\203r\350\361\271\223>"
         "\305\022wC\276\"\006 \236\360-\371\313\362\366\350\200\3238/\000",
         78);
  memcpy(
      (void*)0x200000000700,
      "\x71\x75\x69\x65\x74\x2c\x63\x6f\x64\x65\x70\x61\x67\x65\x3d\x64\x65\x66"
      "\x61\x75\x6c\x74\x2c\x69\x6f\x63\x68\x61\x72\x73\x65\x74\x3d\x69\x73\x6f"
      "\x38\x38\x35\x39\x2d\x33\x2c\x71\x75\x69\x65\x74\x2c\x70\x61\x72\x74\x3d"
      "\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35"
      "\x2c\x00\x92\xe7\x36\x59\xb6\xf1\x9f\xbb\xe0\x1b\x9c\xc9\x08\xda\xb9\xad"
      "\x4d\x60\xfd\x5d\x2f\xe7\xf6\xf2\xa8\x50\x4d\xaf\x6c\xe2\x5e\x47\xcc\xd9"
      "\x6d\xb7\x58\xf9\x9c\xd3\x94\xed\xca\xcf\x7d\x66\x41\x56\x5e\xb3\x0f\xdd"
      "\x75\x53\x8e\x1b\x4b\x26\x85\x6e\x0d\x8d\x3d\xd5\x69\x68\x71\xfe\xa5\x6b"
      "\xef\xab\x9d\x60\x54\xe8\xa3\xd7\xec\x6b\x04\x46\xb9\x85\x4b\xe7\xc5\x47"
      "\xde\x0e\x63\x27\xb2\x6b\x68\x89\x27\xc4\x36\x32\x0b\xf5\xa8\xf3\xda\x0d"
      "\x37\x3f\x12\x3f\x05\xa7\xc2\x3b\xc4\x4c\xb0\x9b\x35\x69\xc1\xa2\xe6\xa5"
      "\x3d\xb8\x5a\x35\x2c\x84\xd2\xbe\x28\x86\x15\x82\x59\x5b\xe3\x00\xb4\x0f"
      "\x15\x69\xd4\x2e\x14\xad\xdb\xeb\xd8\x53\x77\x6f\xc5\xf0\x17\x15\xe8\x5e"
      "\xea\xa1\x88\x00\x2d\x9d\x98\xf7\x7b\xbe\xcf\x7e\x07\x5f\x26\x4e\x05\x2b"
      "\xb8\xcd\xbe\x5d\xfa\x46\x17\x64\x27\x2d\x3b\xb8\x74\x30\x6c\xf0\x96\x2d"
      "\xe8\xb6\x67\x98\x43\x88\x93\x4f\xb1\xb4\x4c\xc5\x55\x06\x45\x50\xa2\xdf"
      "\x4e\xa5\x3d\x39\x74\xa6\x52\xe6\xdc\xf8\xba\x8b\x52\x64\x49\x7e\xfd\xc5"
      "\x3e\xc6\x74\x2c\x9f\xac\x1e\x40\x6f\x1e\xb7\xcd\x1c\xa3\xba\xaf\xde\xe5"
      "\xc3\x4f\x59\x97\x5c\x6c\xbf\x06\x80\xde\xdc\x70\xdb\x5b\x03\x87\x0a"
      "\x1a",
      342);
  memcpy(
      (void*)0x200000000a00,
      "\x78\x9c\xec\xdd\x4f\x6b\x13\x41\x18\xc7\xf1\xdf\x6c\xd2\x26\xda\xd2\x6e"
      "\x6d\x45\xf0\x58\x2d\x28\x82\x68\xbd\x88\x97\x88\xe4\x45\x78\x12\xb5\x89"
      "\x50\x0c\x15\x6d\x45\xeb\xa9\x8a\x27\x11\xbd\x7b\xf7\x2d\xf8\x22\xbc\x28"
      "\xbe\x01\x3d\x79\xf2\x05\xd4\xd3\xca\xcc\xec\xe6\xef\x26\x9b\x84\x24\x6b"
      "\xf4\xfb\x81\x86\x4d\x76\x9f\x9d\x67\xb2\x7f\x66\x9e\x40\x59\x01\xf8\x6f"
      "\xdd\xaa\x7e\xff\x78\xed\xa7\xfd\x33\x52\x41\x05\xe9\xcd\x0d\x29\x90\x54"
      "\x96\x8a\x92\x4e\xeb\x4c\xf9\xe9\xde\xc1\xee\x41\xa3\x5e\x1b\xb4\xa3\x82"
      "\x8b\xb0\x7f\x46\x3e\xd2\xf4\x6c\xb3\xb3\x57\x4f\x0b\xb5\x71\x2e\x22\x16"
      "\xda\x77\x45\x2d\xb7\x7f\x86\xe9\x88\xa2\xe8\xe6\x8f\xbc\x93\x40\xee\xdc"
      "\xd5\x9f\x22\x90\x4a\xf1\xd5\xe9\xd6\x97\x57\x57\x67\x9e\xdb\x20\x2f\xc7"
      "\x8c\x3b\x9a\x70\x1e\xf3\xc6\x1c\xeb\x58\xcf\xb5\x92\x77\x1e\x00\x80\x7c"
      "\xc5\xe3\x7f\x10\x8f\xf3\xcb\xf1\xfc\x3d\x08\xa4\xad\x78\x8a\xee\xc7\xff"
      "\xbc\x13\x9d\x90\xe3\xbc\x13\x98\xba\x68\xe0\xda\xb6\xf1\xdf\x55\x59\x91"
      "\xb1\xc7\xd7\xcd\xed\x4c\xab\xde\x73\x25\x9c\x5d\x1f\x24\x55\xe2\x30\x2d"
      "\x2f\x74\xbd\x5f\x94\x3f\xb3\x3a\x26\x98\x26\xab\xaa\x74\xb9\x04\x27\x1e"
      "\xec\x36\xea\x97\x77\x1e\x35\x6a\x81\x5e\xa9\x12\x6b\xdb\x6c\xc3\xbd\xd6"
      "\xfc\xa9\x9b\xc8\xc8\x76\x33\xa5\x36\x1d\x60\x88\xbe\x9b\xf4\x19\xe5\x92"
      "\xeb\xc3\x82\xed\xc3\xb6\xcf\xff\x99\xa4\x8e\xfc\xd7\xc7\x6c\x71\x6c\xe6"
      "\xb3\xf9\x6a\xee\x98\x50\x1f\x54\x6b\xce\xff\x8a\x91\xb1\x87\xc9\x1d\xa9"
      "\xb0\xeb\x48\xf9\xfc\xaf\xf4\xdf\xa3\xeb\x65\x68\xb7\x52\x7c\xdb\xa8\x54"
      "\x2a\x41\xc7\x26\x6b\xae\x91\xb3\x71\x0b\xb1\x8c\x5e\x96\xd3\x2b\x12\x25"
      "\x67\xd4\x9a\x3a\x7f\x20\x08\xb3\xf2\x74\x51\xa7\xba\xa2\x7c\xef\xae\x66"
      "\x44\xad\xa7\x46\x6d\x27\xef\xfa\x44\x6d\x74\x44\xd9\xde\x34\xcf\xe6\xfe"
      "\xed\x4d\x9b\x79\x67\x6e\x9b\x4d\xfd\xd2\x27\x55\xdb\xe6\xff\x81\xcd\x6f"
      "\x4b\x03\xaf\xcc\xd6\x55\x63\xb6\xfc\x50\xe0\xbe\x71\xdf\x9f\xc5\xf4\xe6"
      "\x8a\x6e\x9f\x61\xcf\xc8\xd1\x7b\xb9\x34\xbf\xc5\x52\xbf\xd4\x7f\x0f\xbe"
      "\xa7\x61\x04\x6f\x75\x5f\xd7\xb5\xb2\x7f\xf8\xe2\x61\xa1\xd1\xa8\x3f\xb1"
      "\x0b\xf7\x52\x16\x1e\x2f\x37\x3f\x59\x78\x2d\xa5\x6e\x93\xf3\x82\x8e\x5a"
      "\x9f\x94\x14\x39\x3d\x1b\x27\x83\xd2\xa8\x4d\x5c\x92\x34\x6e\x62\x17\x27"
      "\xda\x53\x7b\xff\xc8\xdc\xd8\x5e\x65\x69\xab\x92\x01\xea\x6f\x38\x5e\xf3"
      "\xbf\x50\xfd\x32\xfa\x89\x34\x6f\x0b\xf9\xde\x9e\x30\x1b\xfb\x87\x25\xf9"
      "\x83\x9e\x77\x26\xc8\x89\x9d\x77\x19\x5f\xff\xb5\xea\x95\xa2\x9f\xec\xd9"
      "\x97\x30\x75\x9e\x3e\xe4\x0f\x01\xf1\x1e\x23\x3b\xc7\x6e\x56\x70\xad\xd8"
      "\xc8\xcf\xc8\x25\x9d\x1c\xa9\x82\x5b\xea\x5f\xc1\xf5\xd6\x5c\x3d\x35\xa3"
      "\xab\xb9\xce\x5d\x90\xce\x0f\xdf\x62\x18\xe7\xf9\x8f\x30\x55\x7d\xd3\x5d"
      "\x7e\xff\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x98"
      "\x37\xb3\xf8\x77\x82\xbc\xfb\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\xc0\xbc\x6b\x3e\xff\x57\xc9\xf3\x7f\x35\xdc\xf3"
      "\x7f\xbb\x1f\xc5\x32\xc9\xe7\xff\xbe\xdf\x13\xcf\xff\x05\xa6\xef\x4f\x00"
      "\x00\x00\xff\xff\x6c\x2d\x77\x83",
      710);
  syz_mount_image(
      /*fs=*/0x200000000040, /*dir=*/0x200000000100,
      /*flags=MS_LAZYTIME|MS_STRICTATIME|MS_NODIRATIME|MS_MANDLOCK|MS_DIRSYNC*/
      0x30008c0, /*opts=*/0x200000000700, /*chdir=*/0x11, /*size=*/0x2c6,
      /*img=*/0x200000000a00);
}
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;
  if ((reason = setup_leak()))
    printf("the reproducer may not work as expected: leak checking setup "
           "failed: %s\n",
           reason);
  loop();
  return 0;
}