// https://syzkaller.appspot.com/bug?id=b3d4ed3e41b3085ce97f4504f4183e3f99115fb2
// 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 __thread int clone_ongoing;
static __thread int skip_segv;
static __thread jmp_buf segv_env;

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

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

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

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

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

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

static 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 66 69 6c 65 32 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x3004d91 (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 {
  //              noinit_itable: buffer: {6e 6f 69 6e 69 74 5f 69 74 61 62 6c
  //              65} (length 0xd)
  //            }
  //            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 = 0x523 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x523)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000000, "ext4\000", 5));
  NONFAILING(memcpy((void*)0x200000000500, "./file2\000", 8));
  NONFAILING(memcpy((void*)0x200000000080, "noinit_itable", 13));
  NONFAILING(*(uint8_t*)0x20000000008d = 0x2c);
  NONFAILING(*(uint8_t*)0x20000000008e = 0);
  NONFAILING(memcpy(
      (void*)0x200000000a80,
      "\x78\x9c\xec\xdd\xcd\x6f\x1c\x67\x19\x00\xf0\x67\x36\xbb\x49\x9c\x38\xb5"
      "\xf9\x38\x40\x25\x42\xa1\x45\x4e\x05\xd9\xb5\x6b\xda\x5a\x1c\x4a\x91\x10"
      "\x9c\x2a\x21\xca\x3d\x18\x7b\x6d\x59\x5e\x7b\x2d\xef\xba\x8d\x57\x15\x75"
      "\xfe\x02\x24\x84\x00\x89\x13\x5c\xb8\x20\xf1\x07\x20\xa1\x48\x5c\x38\x22"
      "\xa4\x4a\x70\x06\xa9\x08\x84\x20\x85\x03\x07\xe8\xa0\x9d\x9d\xf5\x57\x76"
      "\xed\x6d\xba\xd9\x75\xec\xdf\x4f\x9a\xcc\xfb\xce\xd7\xf3\xbc\x9b\xcc\xec"
      "\xcc\xec\x9b\x99\x00\x2e\xac\x67\x22\xe2\xd5\x88\x78\x3f\x4d\xd3\xe7\x23"
      "\x62\x2a\x92\x6c\x7a\x21\x1f\x62\xaf\x33\xb4\x97\x7b\xef\xc1\x5b\x4b\xed"
      "\x21\x89\x34\x7d\xfd\x1f\x49\xb6\x64\xbb\xde\xdd\x56\x92\x8f\xaf\xe7\xab"
      "\x5d\x8d\x88\x6f\x7e\x3d\xe2\x3b\xc9\xc3\x71\x1b\xbb\xad\xf5\xc5\x5a\xad"
      "\xba\x9d\xd7\x2b\xcd\x8d\xad\x4a\x63\xb7\x75\x7b\x6d\x63\x71\xb5\xba\x5a"
      "\xdd\x9c\x9f\x9f\x7b\x69\xe1\xe5\x85\x17\x17\x66\x87\xd2\xce\x1b\x11\xf1"
      "\xca\x57\xff\xf2\xc3\xef\xfd\xfc\x6b\xaf\xfc\xfa\x0b\x6f\xfe\xf9\xce\xdf"
      "\x6e\x7d\xb7\x9d\xd6\x64\x3e\xff\x70\x3b\x3e\xa0\xe2\x49\x33\x3b\x4d\x2f"
      "\x65\x9f\xc5\xe1\x15\xb6\x1f\x31\xd8\x59\x54\xcc\x5a\x98\x9b\x18\x6c\x9d"
      "\x7b\x8f\x31\x1f\x00\x00\xfa\x6b\x9f\xe3\x7f\x34\x22\x3e\x1b\x11\xcf\xc7"
      "\x54\x5c\x3a\xf9\x74\x16\x00\x00\x00\x78\x02\xa5\x5f\x9e\x8c\xff\x26\x11"
      "\x69\x6f\x97\xfb\x4c\x07\x00\x00\x00\x9e\x20\x85\xac\x0f\x6c\x52\x28\xe7"
      "\x7d\x01\x26\xa3\x50\x28\x97\x3b\x7d\x78\x3f\x1e\xd7\x0a\xb5\x7a\xa3\xf9"
      "\xf9\x95\xfa\xce\xe6\x72\xa7\xaf\xec\x74\x94\x0a\x2b\x6b\xb5\xea\x6c\xd6"
      "\x57\x38\xab\x27\xed\xfa\x5c\x56\x3e\xa8\xbf\x70\xac\x3e\x7f\xa5\x73\xbf"
      "\xe1\x07\x53\x13\x59\xbd\xbc\x54\xaf\x2d\x8f\xfb\xe6\x07\x00\x00\x00\x5c"
      "\x10\xd7\x8f\x5d\xff\xff\x7b\xaa\x73\xfd\x0f\x00\x00\x00\x9c\x33\xd3\xe3"
      "\x4e\x00\x00\x00\x00\x78\xec\x5c\xff\x03\x00\x00\xc0\xf9\xe7\xfa\x1f\x00"
      "\x00\x00\xce\xb5\x6f\xbc\xf6\xda\x44\x44\xa4\xdd\xf7\x5f\x2f\xbf\xb1\xbb"
      "\xb3\x5e\x7f\xe3\xf6\x72\xb5\xb1\x5e\xde\xd8\x59\x2a\x2f\xd5\xb7\xb7\xca"
      "\xab\xf5\xfa\x6a\xf6\xcc\xbe\x8d\xd3\xb6\x57\xab\xd7\xb7\xbe\x18\x9b\x3b"
      "\x77\x2b\xcd\x6a\xa3\x59\x69\xec\xb6\xee\x6c\xd4\x77\x36\x9b\x77\xd6\x8e"
      "\xbc\x02\x1b\x00\x00\x00\x18\xa1\x8f\x7c\xfa\xfe\x1f\x93\x88\xd8\xfb\xd2"
      "\x44\x36\xb4\x5d\x1e\x77\x52\xc0\x48\x14\xf7\x4b\x49\x3e\xee\xb1\xf7\xff"
      "\xe9\xa9\xce\xf8\xdd\x11\x25\x05\x8c\xc4\xa5\x01\x96\x79\xf7\xca\x08\x12"
      "\x01\x46\xae\x38\xee\x04\x80\xb1\x29\x8d\x3b\x01\x60\xec\x92\x53\xe6\xf7"
      "\xed\xbc\xf3\xbb\x7c\xfc\x99\xe1\xe6\x03\x00\x00\x0c\xdf\xcc\x27\xfb\xff"
      "\xfe\x5f\x38\x71\xcd\xbd\x93\x67\x03\x67\x9e\x9d\x18\x2e\xae\x63\xfb\x7f"
      "\xda\x36\xae\x5c\x80\xd1\xca\x7e\xff\x1f\xb4\xc3\xaf\x93\x05\x38\x57\x4a"
      "\x03\xf5\x00\x04\xce\xb3\x0f\xfd\xfb\xff\xa9\x5c\x57\x00\x00\xc0\xb8\x4d"
      "\x66\x43\x52\x28\xe7\xb7\xf7\x26\xa3\x50\x28\x97\x23\x6e\x64\xaf\x05\x28"
      "\x25\x2b\x6b\xb5\xea\x6c\x44\x3c\x15\x11\x7f\x98\x2a\x5d\x69\xd7\xe7\x62"
      "\xc0\xff\x38\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x64\xd2\x34\xe9\xbc\xf4\x07\x00\x00\x00\x38\xb7\x22"
      "\x0a\x7f\x4d\x7e\x93\x64\xef\xff\x9a\x99\x7a\x6e\xf2\xf8\xfd\x81\xcb\xc9"
      "\x7f\xa6\x22\x7f\x45\xe8\x9b\x3f\x79\xfd\x47\x77\x17\x9b\xcd\xed\xb9\xf6"
      "\xf4\x7f\xee\x4f\x6f\xfe\x38\x9f\xfe\xc2\x38\xee\x60\x00\x00\x00\x00\xc7"
      "\x75\xaf\xd3\xbb\xd7\xf1\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x30\x4c\xef\x3d\x78\x6b\xa9\x3b\x8c\x32\xee"
      "\xdf\xbf\x12\x11\xd3\xbd\xe2\x17\xe3\x6a\x36\xbe\x1a\xa5\x88\xb8\xf6\xaf"
      "\x24\x8a\x87\xd6\x4b\x22\xe2\xd2\x10\xe2\xef\xdd\x8b\x88\x4f\xf4\x8a\x9f"
      "\xb4\xd3\xda\x0f\xd9\x2b\xfe\xc4\xe3\x8f\x1f\xd3\xf9\xa7\xd0\x2b\xfe\xf5"
      "\x21\xc4\x87\x8b\xec\x7e\xfb\xf8\xf3\x6a\xaf\xfd\xaf\x10\xcf\x64\xe3\xde"
      "\xfb\x5f\x31\xe2\x48\xfd\x51\x1d\x39\xfe\xb5\x6e\x1e\x39\xfe\x76\x8f\x7f"
      "\x97\xfa\xec\xff\x37\x06\x8c\xf1\xf4\x3b\xbf\xac\xf4\x8d\x7f\x2f\xe2\xe9"
      "\x62\xef\xe3\x4f\x37\x7e\xd2\x27\xfe\xb3\x03\xc6\xff\xf6\xb7\x5a\xad\x7e"
      "\xf3\xd2\x9f\x46\xcc\xf4\xfc\xfe\x49\x8e\xc4\xaa\x34\x37\xb6\x2a\x8d\xdd"
      "\xd6\xed\xb5\x8d\xc5\xd5\xea\x6a\x75\x73\x7e\x7e\xee\xa5\x85\x97\x17\x5e"
      "\x5c\x98\xad\xac\xac\xd5\xaa\xf9\x9f\x3d\x63\x7c\xff\x53\xbf\x7a\xff\xa4"
      "\xf6\x5f\xeb\x13\x7f\xfa\x94\xf6\x3f\x37\x60\xfb\xff\xf7\xce\xdd\x07\x1f"
      "\xeb\x14\x4b\x07\x53\x27\xf6\xe3\xdf\x7a\xb6\x47\xfc\xdf\xfe\x2c\x5f\xee"
      "\xe1\xf8\x85\xfc\xbb\xef\x73\x79\xb9\x3d\x7f\xa6\x5b\xde\xeb\x94\x0f\xbb"
      "\xf9\x8b\xdf\xdf\x3c\xa9\xfd\xcb\x07\xed\x2f\x7d\x90\xbf\xff\x5b\x03\xb6"
      "\x7f\x28\x3b\x0a\x00\x30\x34\x8d\xdd\xd6\xfa\x62\xad\x56\xdd\x7e\xc2\x0a"
      "\x6f\xe7\xf9\x9f\xbe\x70\xfb\x3c\xeb\x6c\xe4\xfc\x08\x85\xe4\x6c\xa4\x71"
      "\x5e\x0b\x6f\x0f\x75\x83\x69\x9a\xa6\xed\x7f\x93\x3d\x66\xdd\x8f\x88\x41"
      "\xb6\x93\xc4\x59\xf8\x58\xb2\xc2\x78\x8f\x4b\x00\x00\xc0\xf0\x1d\x9c\xf4"
      "\x8f\x3b\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\xb8\xb8\x1e\x7e\xfa\x57\x9a\xc6\x90\x1f\x42\x76\x3c\xe6\xde\x7e\x29\xf1"
      "\x64\x60\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\xe0\xcc\xf8\x7f\x00\x00\x00\xff\xff\x8f\xa3\xd7"
      "\xf2",
      1315));
  NONFAILING(syz_mount_image(
      /*fs=*/0x200000000000, /*dir=*/0x200000000500,
      /*flags=MS_LAZYTIME|MS_REC|MS_SYNCHRONOUS|MS_STRICTATIME|MS_RDONLY|0xd80*/
      0x3004d91, /*opts=*/0x200000000080, /*chdir=*/1, /*size=*/0x523,
      /*img=*/0x200000000a80));
  //  syz_mount_image$ext4 arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {65 78 74 34 00} (length 0x5)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x2008002 (8 bytes)
  //    opts: ptr[in, fs_options[ext4_options]] {
  //      fs_options[ext4_options] {
  //        elems: array[fs_opt_elem[ext4_options]] {
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //    chdir: int8 = 0x1 (1 bytes)
  //    size: len = 0x55f (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x55f)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000100, "ext4\000", 5));
  NONFAILING(memcpy((void*)0x200000000040, "./file0\000", 8));
  NONFAILING(*(uint8_t*)0x200000000080 = 0);
  NONFAILING(memcpy(
      (void*)0x200000000d00,
      "\x78\x9c\xec\xdd\xcf\x6f\x1c\x57\x1d\x00\xf0\xef\x8c\x7f\x6d\xd3\x34\x4e"
      "\xa0\x07\xa8\x80\x04\x28\x04\x14\x65\x37\xde\xb4\x51\xd5\x4b\xc3\x05\x84"
      "\xaa\x4a\x88\x8a\x03\xe2\x90\x1a\x7b\x63\x99\xec\x66\x43\x76\x5d\x6a\x13"
      "\x09\xf7\x6f\x00\x09\x24\x4e\xf0\x27\x70\x40\xe2\x80\xd4\x13\x07\x6e\x1c"
      "\x10\x42\xe2\x80\x10\xe5\x80\x54\xc0\x02\xc5\x48\x1c\x16\xcd\xec\xd8\xdd"
      "\xda\xbb\xcd\x36\x5e\xef\xd6\xde\xcf\x47\x9a\xcc\x8f\xf7\x66\xbe\xef\xad"
      "\xb3\xf3\xde\xbe\xb5\xe7\x05\x30\xb5\x2e\x45\xc4\x76\x44\xcc\x47\xc4\x6b"
      "\x11\xb1\x58\x1c\x4f\x8a\x25\x6e\x76\x97\x2c\xdf\xc3\x9d\x07\x2b\xbb\x3b"
      "\x0f\x56\x92\xe8\x74\x5e\xfd\x67\x92\xa7\x67\xc7\xa2\xe7\x9c\xcc\x93\xc5"
      "\x35\x4b\x11\xf1\xf5\xaf\x44\x7c\x3b\x39\x1c\xb7\xb5\xb9\x75\x67\xb9\x5e"
      "\xaf\xdd\x2f\xf6\x2b\xed\xc6\xbd\x4a\x6b\x73\xeb\xea\x7a\x63\x79\xad\xb6"
      "\x56\xbb\x5b\xad\xde\x58\xba\x71\xed\x85\xeb\xcf\x57\x0f\x9c\xf9\x87\x73"
      "\x8f\x5b\xd7\x8b\x8d\x5f\xbc\xf3\xe5\xf5\x97\xbf\xf1\xeb\x5f\x7d\xf2\xed"
      "\xdf\x6d\x7f\xf1\xfb\x59\xb1\xce\x16\x69\xbd\xf5\x18\xa5\x6e\xd5\xe7\xf6"
      "\xe3\x64\x66\x23\xe2\xe5\xe3\x08\x36\x01\x33\xc5\x7a\x7e\xc2\xe5\xe0\xf1"
      "\xa4\x11\xf1\x91\x88\xf8\x4c\xfe\xfe\x5f\x8c\x99\xfc\x7f\x27\x00\x70\x9a"
      "\x75\x3a\x8b\xd1\x59\xec\xdd\x1f\xa0\x34\x30\x05\x00\x38\x61\xd2\x7c\x0c"
      "\x2c\x49\xcb\x11\x91\xa6\x45\x27\xa0\xdc\x1d\xc3\x7b\x3a\xce\xa4\xf5\x66"
      "\xab\x7d\xe5\x76\x73\xe3\xee\x6a\x77\xac\xec\x7c\xcc\xa5\xb7\xd7\xeb\xb5"
      "\x6b\x17\x16\xfe\xf4\xdd\x3c\xf3\x5c\x92\xed\x2f\xe5\x69\x79\x7a\xbe\x5f"
      "\x3d\xb0\x7f\x3d\x22\x2e\x44\xc4\x8f\x16\x9e\xc8\xf7\xcb\x2b\xcd\xfa\xea"
      "\x64\xba\x3c\x00\x30\xf5\x9e\xec\x6d\xff\x23\xe2\x3f\x0b\x69\x5a\x2e\x0f"
      "\x75\x6a\x9f\x6f\xf5\x00\x80\x13\xa3\x34\xe9\x02\x00\x00\x63\xa7\xfd\x07"
      "\x80\xe9\xa3\xfd\x07\x80\xe9\x33\x44\xfb\x5f\x7c\xd9\xbf\x7d\xec\x65\x01"
      "\x00\xc6\xc3\xe7\x7f\x00\x98\x3e\xda\x7f\x00\x98\x3e\xda\x7f\x00\x98\x2a"
      "\x5f\x7b\xe5\x95\x6c\xe9\xec\x16\xcf\xbf\x5e\x7d\x7d\x73\xe3\x4e\xf3\xf5"
      "\xab\xab\xb5\xd6\x9d\x72\x63\x63\xa5\xbc\xd2\xbc\x7f\xaf\xbc\xd6\x6c\xae"
      "\xe5\xcf\xec\x69\x3c\xea\x7a\xf5\x66\xf3\xde\xd2\x73\xb1\xf1\x46\xa5\x5d"
      "\x6b\xb5\x2b\xad\xcd\xad\x5b\x8d\xe6\xc6\xdd\xf6\xad\xfc\xb9\xde\xb7\x6a"
      "\x73\x63\xa9\x15\x00\xf0\x7e\x2e\x5c\x7c\xeb\x8f\x49\x44\x6c\xbf\xf8\x44"
      "\xbe\x44\xcf\x5c\x0e\xda\x6a\x38\xdd\xd2\x11\xe6\x02\x4e\x96\x99\xa3\x9c"
      "\xac\x83\x00\x27\x9a\xd9\xbe\x60\x7a\x0d\xd5\x84\xe7\x9d\x84\xdf\x1e\x7b"
      "\x59\x80\xc9\xe8\xfb\x30\xef\x52\xdf\xcd\xf7\xfa\xc9\x07\x08\xe2\xf7\x8c"
      "\xe0\x43\xe5\xf2\xc7\x87\x1f\xff\x37\xc7\x33\x9c\x2e\x1f\x70\x64\xff\xf7"
      "\xc7\x32\x49\x3e\x30\x11\x8f\x37\xfe\xff\xd2\xc8\xcb\x01\x8c\x9f\xf1\x7f"
      "\x98\x5e\x9d\x4e\x72\x70\xce\xff\xf9\xfd\x24\x00\xe0\x54\x3a\xc2\xaf\xf0"
      "\x75\x7e\x30\xaa\x4e\x08\x30\x51\x8f\x9a\xcc\x7b\x24\xdf\xff\x03\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\xc0\x29\x73\x36\x22\xbe\x13\x49\x5a\xce\xe7\x02\x4f\xb3\x7f"
      "\xd3\x72\x39\xe2\xa9\x88\x38\x1f\x73\xc9\xed\xf5\x7a\xed\x5a\x44\x9c\x8b"
      "\x8b\x11\x31\xb7\x90\xed\x2f\x4d\xba\xd0\x00\xc0\x11\xa5\x7f\x4f\x8a\xf9"
      "\xbf\x2e\x2f\x3e\x7b\xf6\x60\xea\x7c\xf2\xdf\x85\x7c\x1d\x11\xdf\xfb\xe9"
      "\xab\x3f\x7e\x63\xb9\xdd\xbe\xbf\x94\x1d\xff\xd7\xfe\xf1\x85\xbd\xe9\xc3"
      "\xaa\xef\x9e\x77\x84\x79\x05\x01\x80\xe1\xfd\x75\x98\x4c\x79\xfb\x5d\x2d"
      "\xd6\x3d\x1f\xe4\x1f\xee\x3c\x58\xd9\x5b\x8e\xb1\x8c\x87\xbc\xf3\xa5\xfd"
      "\xc9\x47\x57\x76\x77\x1e\xe4\x4b\x37\x65\x36\x3a\x9d\x4e\x27\xa2\x94\xf7"
      "\x25\xce\xfc\x3b\x89\xd9\xe2\x9c\x52\x44\x3c\x13\x11\x33\x23\x88\xbf\xfd"
      "\x66\x44\x7c\xac\x5f\xfd\x93\x7c\x6c\xe4\x7c\x31\xf3\x69\x6f\xfc\x28\x62"
      "\x3f\x35\xd6\xf8\xe9\x7b\xe2\xa7\x79\x5a\x77\x9d\xbd\x7c\x1f\x1d\x41\x59"
      "\x60\xda\xbc\x95\xdd\x7f\x6e\xf6\x7b\xff\xa5\x71\x29\x5f\xf7\x7f\xff\x97"
      "\xf2\x3b\xd4\xd1\xe5\xf7\xbf\x52\xc4\xde\xbd\x6f\xb7\x27\xfe\x6c\x11\x69"
      "\xa6\x4f\xfc\xec\x3d\x7f\x69\xd8\x18\xcf\xfd\xe6\xab\x87\x0e\x76\x16\xbb"
      "\x69\x6f\x46\x3c\x33\xdb\x2f\x7e\xb2\x1f\x3f\x19\x10\xff\xd9\x21\xe3\xff"
      "\xf9\x13\x9f\xfa\xe1\x4b\x03\xd2\x3a\x3f\x8b\xb8\x1c\xfd\xe3\xf7\xc6\xaa"
      "\xb4\x1b\xf7\x2a\xad\xcd\xad\xab\xeb\x8d\xe5\xb5\xda\x5a\xed\x6e\xb5\x7a"
      "\x63\xe9\xc6\xb5\x17\xae\x3f\x5f\xad\xe4\x63\xd4\x95\xbd\x91\xea\xc3\xfe"
      "\xf1\xe2\x95\x73\x83\xca\x96\xd5\xff\xcc\x80\xf8\xa5\xbe\xf5\x9f\xdf\x3f"
      "\xf7\x73\x43\xd6\xff\xe7\xff\x7b\xed\x5b\x9f\x7e\x77\x77\xe1\x60\xfc\x2f"
      "\x7c\xb6\xff\xcf\xff\xe9\xbe\xf1\xbb\xb2\x36\xf1\xf3\x43\xc6\x5f\x3e\xf3"
      "\xcb\x81\xd3\x77\x67\xf1\x57\x07\xd4\xff\x51\x3f\xff\x2b\x43\xc6\x7f\xfb"
      "\x6f\x5b\xab\x43\x66\x05\x00\xc6\xa0\xb5\xb9\x75\x67\xb9\x5e\xaf\xdd\x3f"
      "\xd2\x46\xf6\x29\x74\x14\xd7\x39\xb4\x91\x15\x71\xb8\xcc\x7b\xdd\xc5\xc1"
      "\x79\x8a\x0c\x37\xdf\xef\x3a\x7f\x89\x7c\x63\x44\x2f\xcb\x80\x8d\xac\x33"
      "\x36\x4c\xe6\xb9\xe3\x7a\x55\x8f\x7d\x63\x76\xbf\xaf\x38\xda\x2b\x7f\x33"
      "\xbb\xe2\x98\xab\x93\x8e\xbc\x16\x47\xda\x78\x38\xae\x58\x93\xb9\x1f\x01"
      "\xe3\x73\xa8\x79\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x3e\x74"
      "\xc6\xf1\xa7\x4b\x93\xae\x23\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa7\xd7\xff\x03\x00"
      "\x00\xff\xff\xf1\x15\xc1\xc4",
      1375));
  NONFAILING(
      syz_mount_image(/*fs=*/0x200000000100, /*dir=*/0x200000000040,
                      /*flags=MS_LAZYTIME|MS_SILENT|MS_NOSUID*/ 0x2008002,
                      /*opts=*/0x200000000080, /*chdir=*/1, /*size=*/0x55f,
                      /*img=*/0x200000000d00));
  //  syz_mount_image$ext4 arguments: [
  //    fs: nil
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x2169802 (8 bytes)
  //    opts: nil
  //    chdir: int8 = 0x0 (1 bytes)
  //    size: len = 0x0 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x0)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000140, "./file0\000", 8));
  NONFAILING(syz_mount_image(
      /*fs=*/0, /*dir=*/0x200000000140,
      /*flags=MS_LAZYTIME|MS_SHARED|MS_PRIVATE|MS_UNBINDABLE|MS_SILENT|MS_NOSUID|0x1800*/
      0x2169802, /*opts=*/0, /*chdir=*/0, /*size=*/0, /*img=*/0x2000000003c0));
  //  syz_mount_image$ext4 arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {65 78 74 34 00} (length 0x5)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x2000008 (8 bytes)
  //    opts: ptr[in, fs_options[ext4_options]] {
  //      fs_options[ext4_options] {
  //        elems: array[fs_opt_elem[ext4_options]] {
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //    chdir: int8 = 0xfc (1 bytes)
  //    size: len = 0x53e (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x53e)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000040, "ext4\000", 5));
  NONFAILING(memcpy((void*)0x200000000000, "./file0\000", 8));
  NONFAILING(*(uint8_t*)0x2000000003c0 = 0);
  NONFAILING(memcpy(
      (void*)0x200000000940,
      "\x78\x9c\xec\xdd\x41\x6f\x23\x57\x1d\x00\xf0\xff\x78\xed\xdd\xec\x6e\xb6"
      "\x49\x81\x03\x54\x6a\x29\xb4\x68\xb7\x82\xb5\x93\x86\xb6\x11\x87\x52\x24"
      "\x04\xa7\x4a\x88\xc2\x79\x09\x89\x13\x45\x71\xe2\x28\x76\xda\x4d\x54\x41"
      "\xf6\x13\x20\x21\x04\x48\x9c\xe0\xc2\x05\x89\x0f\x80\x84\x56\xe2\xc2\xb1"
      "\x42\xaa\x04\x67\x90\x8a\x40\x88\x6e\x41\x82\x03\x74\x90\xed\x71\x12\x9c"
      "\x71\xe2\xac\x9c\x78\xd7\xf9\xfd\xa4\xc9\xbc\xf7\xc6\x33\xff\xf7\x1c\xbf"
      "\xf1\x8c\xe7\x69\x26\x80\x0b\xeb\xd9\x88\x78\x2d\x22\x3e\x4c\xd3\xf4\x85"
      "\x88\x98\xca\xca\x0b\xd9\x14\x7b\x9d\xa9\xf5\xba\x0f\x1e\xbc\xbd\xd8\x9a"
      "\x92\x48\xd3\x37\xfe\x9e\x44\x92\x95\x75\xb7\x95\x64\xf3\xeb\xd9\x6a\x13"
      "\x11\xf1\xf5\xaf\x46\x7c\x3b\x39\x1a\xb7\xb1\xb3\xbb\xb6\x50\xab\x15\xbb"
      "\xf9\x4a\x73\x7d\xb3\xd2\xd8\xd9\xbd\xbd\xba\xbe\xb0\x52\x5d\xa9\x6e\xcc"
      "\xcd\xcd\xbe\x3c\xff\xca\xfc\x4b\xf3\x33\x43\x69\xe7\x8d\x88\x78\xf5\xcb"
      "\x7f\xfe\xe1\xf7\x7e\xfe\x95\x57\x7f\xfd\xb9\xb7\xfe\x74\xe7\xaf\xb7\xbe"
      "\xd3\xaa\xd6\x64\xb6\xfc\x70\x3b\x4e\xa9\x78\xdc\xc2\x4e\xd3\x4b\x57\x26"
      "\x7a\x56\xd8\x7a\xc8\x60\x8f\xa2\x56\x7b\x4a\xdd\xcc\xd5\xc1\xd6\xb9\x77"
      "\x86\xf5\x01\x00\xa0\xbf\xd6\x31\xfe\x47\x22\xe2\xd3\x11\xf1\x42\x4c\xc5"
      "\xa5\xe3\x0f\x67\x01\x00\x00\x80\xc7\x50\xfa\xc5\xc9\xf8\x4f\x12\x91\xe6"
      "\xbb\xdc\xa7\x1c\x00\x00\x00\x78\x8c\x14\xda\x63\x60\x93\x42\x39\x1b\x0b"
      "\x30\x19\x85\x42\xb9\xdc\x19\xc3\xfb\xb1\xb8\x56\xa8\xd5\x1b\xcd\xcf\x2e"
      "\xd7\xb7\x37\x96\x3a\x63\x65\xa7\xa3\x54\x58\x5e\xad\x55\x67\xb2\xb1\xc2"
      "\xd3\x51\x4a\x5a\xf9\xd9\x76\xfa\x20\xff\x62\x4f\x7e\x2e\x22\x9e\x8c\x88"
      "\x1f\x4c\x5d\x6d\xe7\xcb\x8b\xf5\xda\xd2\xa8\x7f\xfc\x00\x00\x00\x80\x0b"
      "\xe2\x7a\xcf\xf9\xff\x3f\xa7\x3a\xe7\xff\x00\x00\x00\xc0\x98\x99\x3e\x7e"
      "\xf1\xd4\x79\xd5\x03\x00\x00\x00\x38\x3b\x27\x9c\xff\x03\x00\x00\x00\x63"
      "\xc0\xf9\x3f\x00\x00\x00\x8c\xb5\xaf\xbd\xfe\x7a\x6b\x4a\xbb\xcf\xbf\x5e"
      "\x7a\x73\x67\x7b\xad\xfe\xe6\xed\xa5\x6a\x63\xad\xbc\xbe\xbd\x58\x5e\xac"
      "\x6f\x6d\x96\x57\xea\xf5\x95\xf6\x3d\xfb\xd6\x4f\xda\x5e\xad\x5e\xdf\xfc"
      "\x7c\x6c\x6c\xdf\xad\x34\xab\x8d\x66\xa5\xb1\xb3\x7b\x67\xbd\xbe\xbd\xd1"
      "\xbc\xb3\x1a\x13\xe7\xd2\x20\x00\x00\x00\xe0\x88\x27\x3f\x79\xff\x0f\x49"
      "\x44\xec\x7d\xe1\x6a\x7b\x6a\xb9\x3c\xea\x4a\x01\xe7\xa2\xb8\x9f\x4a\xb2"
      "\x79\x4e\xef\xff\xe3\x13\x9d\xf9\x7b\xe7\x54\x29\xe0\x5c\x5c\x1a\xe0\x35"
      "\xef\x5d\xc9\x2f\x77\x9c\x00\x8f\xb7\x62\x6f\x41\x9f\xbe\x0e\x8c\x9f\xd2"
      "\xa8\x2b\x00\x8c\x5c\x72\xc2\xf2\x9e\xc1\x3b\xd7\xf6\x53\xef\x64\xf3\x4f"
      "\x0d\xbf\x4e\x00\x00\xc0\x70\xdd\xfc\x44\xfe\xf5\xff\x93\xaf\x0b\xec\x15"
      "\xce\xa1\x7a\xc0\x19\xd2\x89\xe1\xe2\xea\xf9\x9e\x4f\x3d\xeb\x07\x2e\x8e"
      "\xf6\xf5\xff\x41\x07\xf2\x38\x58\x80\xb1\x52\x1a\x68\x04\x20\x30\xce\x4e"
      "\x79\xfd\xff\xc0\x3b\x83\x46\x48\xd3\x53\x55\x08\x00\x00\x18\xba\xc9\xf6"
      "\x94\x14\xca\xd9\xcf\x7b\x93\x51\x28\x94\xcb\x11\x37\xda\x8f\x05\x28\x25"
      "\xcb\xab\xb5\xea\x4c\x44\x3c\x11\x11\xbf\x9f\x2a\x5d\x69\xe5\x67\xdb\x6b"
      "\x26\x27\x9e\x33\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x1d\x69\x9a\x44\x0a\x00\x00\x00\x8c\xb5\x88\xc2"
      "\x5f\x92\xdf\x74\xee\xe5\x7f\x73\xea\xf9\xc9\xde\xdf\x07\x2e\x27\xff\x6e"
      "\x3f\x12\xf8\x72\x44\xbc\xf5\x93\x37\x7e\x74\x77\xa1\xd9\xdc\x9a\x6d\x95"
      "\xbf\xbf\x5f\xde\xfc\x71\x56\xfe\xe2\x28\x7e\xc1\x00\x00\x00\x00\x7a\x75"
      "\xcf\xd3\xdb\xf3\x7f\x8d\xba\x36\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x8c\x9b\x0f\x1e\xbc\xbd\xd8\x9d\x06"
      "\x78\xf9\xd5\x61\xc5\xfd\xdb\x97\x22\x62\x3a\x2f\x7e\x31\x26\xda\xf3\x89"
      "\x28\x45\xc4\xb5\x7f\x24\x51\x3c\xb4\x5e\x12\x11\x97\x86\x10\x7f\xef\x5e"
      "\x44\x7c\x3c\x2f\x7e\xd2\xaa\xd6\x7e\xc8\xbc\xf8\xc3\x78\x13\x4e\x88\x1f"
      "\xd3\xd9\xbb\x90\x17\xff\xfa\x10\xe2\xc3\x45\x76\xbf\xb5\xff\x79\x2d\xaf"
      "\xff\x15\xe2\xd9\xf6\x3c\xbf\xff\x15\x23\xfe\x2f\xff\xb0\xfa\xef\xff\x62"
      "\x7f\xff\x77\xa9\x4f\xff\xbf\x31\x60\x8c\xa7\xde\xfd\x65\xa5\x6f\xfc\x7b"
      "\x11\x4f\x15\xf3\xf7\x3f\xdd\xf8\x49\x9f\xf8\xcf\x0d\x18\xff\x5b\xdf\xd8"
      "\xdd\xed\xb7\x2c\xfd\x69\xc4\xcd\xee\xf7\x4f\x7b\x8f\x77\x38\xc2\x41\xaa"
      "\xd2\x5c\xdf\xac\x34\x76\x76\x6f\xaf\xae\x2f\xac\x54\x57\xaa\x1b\x73\x73"
      "\xb3\x2f\xcf\xbf\x32\xff\xd2\xfc\x4c\x65\x79\xb5\x56\xcd\xfe\xe6\xc6\xf8"
      "\xfe\xd3\xbf\xfa\xf0\xb8\xf6\x5f\xcb\xfd\xfe\x4b\xb2\xda\xf4\x6f\xff\xf3"
      "\x39\xdb\xcb\xfb\x4e\xfa\xef\xbb\x77\x1f\x7c\xb4\x9b\xd9\x3b\x1a\xff\xd6"
      "\x73\x39\xf1\x7f\xfb\xb3\xec\x15\x47\xe3\x17\xb2\x38\x9f\xc9\xd2\x49\xf6"
      "\x5e\xb5\xd3\x7b\x9d\xf7\xf3\xb0\x67\x7e\xf1\xbb\x67\x8e\x6b\xff\xd2\x41"
      "\xfb\x4b\xa7\xf9\xff\xdf\xea\xb7\xd1\x5e\x47\x3a\xca\xd3\x83\x7e\x74\x00"
      "\x80\x33\xd0\xd8\xd9\x5d\x5b\xa8\xd5\xaa\x5b\x63\x9b\x68\x9d\xa5\x3f\x02"
      "\xd5\xb8\xe8\x89\x6f\xbe\xff\x08\x7e\xd8\xbe\x3b\xd4\x0d\xa6\x69\x9a\xb6"
      "\xfa\x54\xce\xa2\xfb\x11\x31\xc8\x76\x92\x18\x72\x4b\x0b\xf9\xf5\x39\x48"
      "\xf4\xfd\xa7\x8c\x7a\xcf\x04\x00\x00\x0c\xdb\xc1\x41\xff\xa8\x6b\x02\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x17\xd7\x79\xdc"
      "\x65\xad\x37\xe6\xc1\x2d\x90\x93\x61\xdc\x42\x1b\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x60\x28"
      "\xfe\x17\x00\x00\xff\xff\x03\xfe\xd2\xb1",
      1342));
  NONFAILING(syz_mount_image(/*fs=*/0x200000000040, /*dir=*/0x200000000000,
                             /*flags=MS_LAZYTIME|MS_NOEXEC*/ 0x2000008,
                             /*opts=*/0x2000000003c0, /*chdir=*/0xfc,
                             /*size=*/0x53e, /*img=*/0x200000000940));
}
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;
  install_segv_handler();
  use_temporary_dir();
  loop();
  return 0;
}