// https://syzkaller.appspot.com/bug?id=c6cb5acb423a886f588352e8f44ae448cdcbc053
// 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);
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  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 31 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x2a0471a (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 {
  //              errors_remount: buffer: {65 72 72 6f 72 73 3d 72 65 6d 6f 75
  //              6e 74 2d 72 6f} (length 0x11)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //    chdir: int8 = 0x82 (1 bytes)
  //    size: len = 0x48f (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x48f)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000200, "ext4\000", 5));
  NONFAILING(memcpy((void*)0x2000000000c0, "./file1\000", 8));
  NONFAILING(memcpy((void*)0x200000000280, "errors=remount-ro", 17));
  NONFAILING(*(uint8_t*)0x200000000291 = 0x2c);
  NONFAILING(*(uint8_t*)0x200000000292 = 0);
  NONFAILING(memcpy(
      (void*)0x200000000380,
      "\x78\x9c\xec\xdc\xcd\x6f\x54\x55\x1f\x00\xe0\xdf\xbd\xfd\xe0\x7d\xf9\xac"
      "\x8a\x0a\x48\xb4\x4a\x8c\x8d\x1f\x2d\x2d\xa8\x2c\xdc\x68\x34\x71\x81\xd1"
      "\x44\x17\xa8\xab\xda\x16\x42\x28\xd4\xd0\x9a\x58\x42\xa0\x1a\x83\x1b\x13"
      "\x43\xa2\x6b\x75\x69\xe2\x5f\xe0\xce\x8d\x51\x57\x26\x26\xae\x74\x6f\x48"
      "\x88\xb2\x01\x8d\x8b\x31\xf7\xce\xbd\x32\x9d\x76\x98\xa1\x4e\x67\x0a\xf3"
      "\x3c\xc9\xd0\x73\xe6\x9c\x3b\xe7\x9c\x9e\x7b\xee\x3d\xf7\x1c\xa6\x01\xf4"
      "\xac\xe1\xec\x9f\x24\x62\x6b\x44\xfc\x12\x11\x3b\xaa\xd1\xe5\x19\x86\xab"
      "\x3f\xae\x5d\x39\x3b\xf5\xe7\x95\xb3\x53\x49\x54\x2a\xaf\xfe\x9e\xe4\xf9"
      "\xae\x5e\x39\x3b\x55\x66\x2d\x8f\xdb\x52\x44\x46\xd2\x88\xf4\x83\xa4\x28"
      "\x64\xb9\xf9\xc5\x33\x27\x26\x67\x67\x67\x4e\x17\xf1\xb1\x85\x93\x6f\x8f"
      "\xcd\x2f\x9e\x79\xe2\xf8\xc9\xc9\x63\x33\xc7\x66\x4e\x4d\x1c\x3a\x74\xf0"
      "\xc0\xf8\xd3\x4f\x4d\x3c\xd9\x96\x76\x66\xed\xba\xba\xe7\xdc\xdc\xde\xdd"
      "\x2f\xbe\x7e\xf1\xa5\xa9\x23\x17\xdf\xfa\xfe\xab\xac\xbe\x5b\x8b\xf4\xda"
      "\x76\xac\xc9\xe0\xca\xb7\x86\xb3\x86\xff\x51\xc9\xd5\xa7\x3d\x1c\xff\xff"
      "\x4f\xc5\x6d\x34\xdb\x6a\xc2\x49\x7f\x17\x2b\xc2\x4d\xe9\x8b\x88\xac\xbb"
      "\x06\xb2\xf1\x5f\xa9\x54\xce\xd7\xa4\xed\x88\x17\xde\x6f\x72\xf8\x96\x75"
      "\xae\x1e\xb0\x8e\xb2\x7b\xd3\xa6\x55\xde\x2f\xee\x8b\x4b\x95\x86\x92\x1b"
      "\xa6\x02\xb7\x82\x24\xba\x5d\x03\xa0\x3b\xca\xfb\x7d\xf6\xfc\x5b\xbe\x3a"
      "\x38\xfd\xe8\xba\xcb\xcf\x56\x1f\x80\xb2\x76\x5f\x2b\x5e\xd5\x94\xfe\x48"
      "\x8b\x3c\x03\x75\xcf\xb7\xed\x34\x1c\x11\x47\x96\xfe\xfa\x2c\x7b\x45\x3b"
      "\xd6\x21\x00\x00\x9a\xf8\x68\xea\xd3\xc3\xf1\xf8\x6a\xf3\xbf\x34\xee\xa9"
      "\xc9\xb7\xbd\xd8\x43\x19\x8a\x88\x3b\x22\xe2\xce\x88\xb8\x2b\x22\x76\x46"
      "\xc4\xdd\x11\x79\xde\x7b\x23\x62\x57\x2b\x85\xd6\x6c\x10\xd4\x6f\x0d\xad"
      "\x9c\xff\xa4\x97\xd6\xde\xba\xe6\xb2\xf9\xdf\x33\xc5\xde\xd6\xf2\xf9\x5f"
      "\x39\xfb\x8b\xa1\xbe\x22\xb6\x2d\x6f\xff\x40\x72\xf4\xf8\xec\xcc\xfe\xe2"
      "\x77\x32\x12\x03\x9b\xb2\xf8\xf8\x0d\xca\xf8\xe6\xf9\x9f\x3e\x6e\x94\x56"
      "\x3b\xff\xcb\x5e\x59\xf9\xe5\x5c\xb0\xa8\xc7\xa5\xfe\xba\x05\xba\xe9\xc9"
      "\x85\xc9\x7c\x52\xda\x06\x97\xdf\x8b\xd8\xd3\x1f\x7f\x57\x2a\x95\xba\xf6"
      "\x27\x51\xf6\x52\x12\x11\xbb\x23\x62\xcf\xcd\x7d\xf4\xf6\x32\x70\xfc\xd1"
      "\x2f\xf7\x36\xca\xd4\xbc\xfd\x2b\x3e\xee\xba\x36\xec\x33\x55\xbe\x88\x78"
      "\xa4\xda\xff\x4b\x51\xd7\xfe\x52\xb2\x72\x7f\x72\x70\xdb\xf5\xfd\xc9\xb1"
      "\xff\xc5\xec\xcc\xfe\xb1\xf2\xac\x58\xe9\x87\x1f\x2f\xbc\xd2\xa8\xfc\xd6"
      "\xdb\xbf\x3e\xb2\xfe\xdf\xbc\xfc\xfc\x2f\x52\x3e\x5f\x2c\x02\x43\x6f\xd6"
      "\xee\xd7\xce\x47\x83\x9d\xcb\xad\x0d\xcb\xb8\xf0\xeb\x87\x0d\x9f\x69\xd6"
      "\x7a\xfe\x0f\x26\xaf\xe5\xd7\xa3\x72\xdb\xf5\xdd\xc9\x85\x85\xd3\xe3\x11"
      "\x83\xc9\xe1\x3c\xbe\xec\xfd\x89\xeb\xc7\x96\xf1\x32\x7f\xd6\xfe\x91\x7d"
      "\x59\x4a\xd9\xfe\xf2\xc8\x34\xbf\xc6\x45\xd1\xff\xf7\x45\xc4\xde\x62\xbf"
      "\xec\xfe\x88\x78\xa0\xa8\xfb\x83\x11\xf1\x50\x44\xec\x6b\xd8\xfa\x88\xef"
      "\x9e\x6b\x9c\xb6\x11\xfa\x7f\xba\xa6\xff\x93\xa8\x3f\xff\x77\x9d\xab\xfe"
      "\x2c\xfb\x7f\xf1\xa6\x03\x7d\x27\xbe\xfd\xba\x51\xf9\xad\xf5\xff\xc1\x3c"
      "\x34\x52\xbc\x93\x5f\xff\x9a\x68\xb5\x82\x6b\xff\xcd\x01\x00\x00\xc0\xad"
      "\x23\xcd\x57\x6e\x92\x74\xf4\xdf\x70\x9a\x8e\x8e\x56\xff\x63\xef\xce\xd8"
      "\x9c\xce\xce\xcd\x2f\x3c\x76\x74\xee\x9d\x53\xd3\xd5\x15\x9e\xa1\x18\x48"
      "\xcb\x95\xae\x1d\x35\xeb\xa1\xe3\xc9\x52\xf1\x89\xd5\xf8\x44\xb1\x56\x5c"
      "\xa6\x1f\x28\xd6\x8d\x3f\xe9\x8b\x3c\x3e\x3a\x35\x37\x3b\xdd\xe5\xb6\x43"
      "\xaf\xdb\xd2\x60\xfc\x67\x7e\xeb\xeb\x76\xed\x80\x75\xb7\xda\x3e\xda\xc4"
      "\x2a\x5f\x68\x03\x6e\x3f\xf5\xe3\x3f\x5d\x1e\x3d\xff\x72\x27\x2b\x03\x74"
      "\x94\xef\x6b\x43\xef\x6a\x32\xfe\xd3\x4e\xd5\x03\xe8\x3c\xf7\x7f\xe8\x5d"
      "\xab\x8d\xff\xf3\x75\x71\x7b\x01\x70\x7b\x72\xff\x87\xde\x65\xfc\x43\xef"
      "\x32\xfe\xa1\x77\xd5\x8d\xff\xbe\xf8\xb9\x5b\x35\x01\x3a\x68\x0d\x5f\xe7"
      "\x17\x10\x98\x5f\x3c\x13\xe9\x86\xa8\x46\x4b\x81\xd6\xff\x1e\xc4\x7a\x07"
      "\xde\xd8\x18\xd5\x68\x21\xd0\xed\x2b\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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\x7b\xfc\x13\x00\x00\xff\xff\x60\x3f\xec\x2b",
      1167));
  NONFAILING(syz_mount_image(
      /*fs=*/0x200000000200, /*dir=*/0x2000000000c0,
      /*flags=MS_LAZYTIME|MS_I_VERSION|MS_REC|MS_SYNCHRONOUS|MS_RELATIME|MS_NOSUID|0x708*/
      0x2a0471a, /*opts=*/0x200000000280, /*chdir=*/0x82, /*size=*/0x48f,
      /*img=*/0x200000000380));
  //  chdir arguments: [
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //  ]
  NONFAILING(memcpy((void*)0x200000000140, "./file0\000", 8));
  syscall(__NR_chdir, /*dir=*/0x200000000140ul);
  //  quotactl$Q_QUOTAON arguments: [
  //    cmd: quota_cmd_quota_on = 0xffffffff80000201 (8 bytes)
  //    special: 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)
  //        }
  //      }
  //    }
  //    id: uid (resource)
  //    addr: nil
  //  ]
  NONFAILING(memcpy((void*)0x200000000180, "/dev/loop", 9));
  NONFAILING(*(uint8_t*)0x200000000189 = 0x30);
  NONFAILING(*(uint8_t*)0x20000000018a = 0);
  syscall(__NR_quotactl, /*cmd=Q_QUOTAON_GRP*/ 0xffffffff80000201ul,
          /*special=*/0x200000000180ul, /*id=*/(intptr_t)-1, /*addr=*/0ul);
  //  mprotect arguments: [
  //    addr: VMA[0x3000]
  //    len: len = 0x3000 (8 bytes)
  //    prot: mmap_prot = 0x9 (8 bytes)
  //  ]
  syscall(__NR_mprotect, /*addr=*/0x200000000000ul, /*len=*/0x3000ul,
          /*prot=PROT_SEM|PROT_READ*/ 9ul);
  //  openat$cgroup_ro arguments: [
  //    fd: fd_cgroup (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {68 75 67 65 74 6c 62 2e 31 47 42 2e 75 73 61 67 65 5f 69 6e
  //      5f 62 79 74 65 73 00} (length 0x1b)
  //    }
  //    flags: const = 0x275a (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd
  NONFAILING(
      memcpy((void*)0x200000000180, "hugetlb.1GB.usage_in_bytes\000", 27));
  res = syscall(__NR_openat, /*fd=*/(intptr_t)-1, /*file=*/0x200000000180ul,
                /*flags=*/0x275a, /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  mmap arguments: [
  //    addr: VMA[0xb36000]
  //    len: len = 0xb36000 (8 bytes)
  //    prot: mmap_prot = 0xa (8 bytes)
  //    flags: mmap_flags = 0x28011 (8 bytes)
  //    fd: fd (resource)
  //    offset: intptr = 0x0 (8 bytes)
  //  ]
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0xb36000ul,
          /*prot=PROT_SEM|PROT_WRITE*/ 0xaul,
          /*flags=MAP_STACK|MAP_POPULATE|MAP_FIXED|MAP_SHARED*/ 0x28011ul,
          /*fd=*/r[0], /*offset=*/0ul);
  //  syz_mount_image$vfat arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {76 66 61 74 00} (length 0x5)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 00} (length 0xfd)
  //    }
  //    flags: mount_flags = 0x4b81415 (8 bytes)
  //    opts: nil
  //    chdir: int8 = 0x3 (1 bytes)
  //    size: len = 0x0 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x0)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000080, "vfat\000", 5));
  NONFAILING(
      memcpy((void*)0x200000000680,
             "./"
             "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
             "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
             "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
             "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000",
             253));
  NONFAILING(syz_mount_image(
      /*fs=*/0x200000000080, /*dir=*/0x200000000680,
      /*flags=MS_I_VERSION|MS_SHARED|MS_SLAVE|MS_SYNCHRONOUS|MS_RELATIME|MS_RDONLY|0x4001404*/
      0x4b81415, /*opts=*/0, /*chdir=*/3, /*size=*/0, /*img=*/0x200000002680));
  //  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 = 0x4011 (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 {
  //              nombcache: buffer: {6e 6f 6d 62 63 61 63 68 65} (length 0x9)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              resuid: fs_opt["resuid", fmt[hex, uid]] {
  //                name: buffer: {72 65 73 75 69 64} (length 0x6)
  //                eq: const = 0x3d (1 bytes)
  //                val: uid (resource)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              norecovery: buffer: {6e 6f 72 65 63 6f 76 65 72 79} (length
  //              0xa)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              grpid: buffer: {67 72 70 69 64} (length 0x5)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              norecovery: buffer: {6e 6f 72 65 63 6f 76 65 72 79} (length
  //              0xa)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //    chdir: int8 = 0x0 (1 bytes)
  //    size: len = 0x617 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x617)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000080, "ext4\000", 5));
  NONFAILING(memcpy((void*)0x200000000040, "./file0\000", 8));
  NONFAILING(memcpy((void*)0x200000000900, "nombcache", 9));
  NONFAILING(*(uint8_t*)0x200000000909 = 0x2c);
  NONFAILING(memcpy((void*)0x20000000090a, "resuid", 6));
  NONFAILING(*(uint8_t*)0x200000000910 = 0x3d);
  NONFAILING(sprintf((char*)0x200000000911, "0x%016llx", (long long)0));
  NONFAILING(*(uint8_t*)0x200000000923 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000924, "norecovery", 10));
  NONFAILING(*(uint8_t*)0x20000000092e = 0x2c);
  NONFAILING(memcpy((void*)0x20000000092f, "grpid", 5));
  NONFAILING(*(uint8_t*)0x200000000934 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000935, "norecovery", 10));
  NONFAILING(*(uint8_t*)0x20000000093f = 0x2c);
  NONFAILING(*(uint8_t*)0x200000000940 = 0);
  NONFAILING(memcpy(
      (void*)0x200000001f00,
      "\x78\x9c\xec\xdd\xcf\x6f\x14\x65\x1f\x00\xf0\xef\x4c\xb7\x3f\x68\x5f\xde"
      "\x16\xf2\xe6\x55\x3c\x48\x13\x63\x20\x51\x5a\x5a\xc0\x10\x63\x22\xc4\x2b"
      "\x21\xf8\xe3\xe6\xa9\xd2\x42\x90\x42\x09\xad\xd1\x22\x89\x25\xc1\x8b\xc6"
      "\x78\xf1\x60\xe2\xc9\x83\xf8\x5f\x28\x89\x57\x0f\x5e\x3d\x78\xf1\x64\x48"
      "\x1a\x63\x38\x88\x41\x59\x33\xdb\xdd\x76\xdb\xdd\x2d\xcb\x76\x7f\xb4\xdd"
      "\xcf\x27\x19\xfa\xcc\x0c\x3b\xcf\x77\x96\x7e\x79\x9e\x7d\xf6\x99\x99\x00"
      "\xba\xd6\x68\xf6\x47\x1a\x71\x20\x22\xae\x25\x11\xc3\x65\xfb\x72\x51\xdc"
      "\x39\xba\xf2\xf7\xee\xff\x71\xf3\x7c\xb6\x24\x91\xcf\xbf\xf9\x7b\x12\x37"
      "\x3f\x4a\x96\xca\x8f\x95\x14\x7f\x0e\x15\x5f\xfc\xcf\x70\x24\x3f\xa5\x11"
      "\xfb\x7b\x2a\xeb\x9d\x5f\xbc\x71\x79\x6a\x76\x76\xe6\x7a\xa1\xe6\xcc\x95"
      "\x6b\xe3\xf3\x8b\x37\x8e\x5c\xba\x32\x75\x71\xe6\xe2\xcc\xd5\xc9\x97\x26"
      "\x4f\x9e\x38\x7e\xe2\xe4\xc4\xd1\x2d\x9d\xdf\xde\xb2\xf2\x99\xdb\xef\xbe"
      "\x3f\xfc\xc9\xd9\xb7\xbf\xf9\xea\x61\x32\xf1\xed\x2f\x67\x93\x38\x15\x8f"
      "\x8a\xb1\x65\xe7\xb5\xf1\xb5\xfd\x5b\xaa\x39\x7b\xcf\x46\x23\xbf\xe2\x41"
      "\xf9\xf6\xec\x7d\x3d\xb9\xc5\x63\x6f\x17\x7f\x0e\x97\x7e\x4f\xd6\x24\x1b"
      "\x37\xb0\x6d\x5d\x28\xfe\x3e\xf6\x46\xc4\x53\x31\x1c\x3d\x65\xff\x9a\xc3"
      "\xf1\xf1\xeb\x1d\x0d\x0e\x68\xa9\x7c\x12\xa5\x36\x0a\xe8\x3a\x49\x43\xf9"
      "\x3f\xd0\xfc\x40\x80\x36\x2b\xf5\x03\x4a\x9f\xed\xab\x7d\x0e\xae\x94\xb6"
      "\xb8\x57\x02\xb4\xc3\xf2\xe9\x95\x01\x80\x95\xdc\xef\x8d\x88\x52\xfe\xe7"
      "\x56\xc6\x06\x63\xa0\x30\x36\x30\x78\x3f\x59\x37\xce\x93\x44\xc4\xd6\x46"
      "\xe6\x56\x64\x75\xfc\xf8\xc3\xd9\xdb\xd9\x12\x35\xc6\xe1\x80\xd6\x58\xba"
      "\x55\x1a\xe5\xde\xd8\xfe\x27\x85\xdc\x1c\x89\x81\xc2\xda\xe0\xfd\x74\x5d"
      "\xfe\xa7\x65\x4b\xb6\xfd\x8d\x06\xeb\x1f\xdd\xb0\x2e\xff\xa1\x7d\x96\x6e"
      "\x45\xc4\xd3\xc5\xf6\xbf\x2f\x1a\xce\xff\x77\x1a\xac\x5f\xfe\x03\x00\x00"
      "\x00\x00\x00\x40\xf3\xdc\x3d\x1d\x11\x2f\x56\x9b\xff\x97\xae\xce\xff\xe9"
      "\xab\x32\xff\x67\x28\x22\x4e\x35\xa1\xfe\xc7\x7f\xff\x97\xde\x2b\x16\x92"
      "\x26\x54\x07\x94\x59\x3e\x1d\xf1\x4a\xc5\xfc\xdf\xbf\xcb\x67\x07\x8f\xf4"
      "\x14\xbf\xe7\xdf\x5b\x98\x0f\xd0\x9b\x5e\xb8\x34\x3b\x73\x34\x22\xfe\x1b"
      "\x11\x87\x23\xd7\x9f\xad\x4f\xac\x3f\xec\xba\x09\xc2\x47\x3e\xdb\xff\x65"
      "\xad\xfa\xcb\xe7\xff\x65\x4b\x56\x7f\x69\x2e\x60\xf1\x50\xf7\x72\x1b\x2e"
      "\xc4\x9d\x9e\x5a\x98\x6a\xce\xd9\x43\x77\x5b\xbe\x15\xf1\x4c\x61\xfe\xef"
      "\xc1\xe2\x96\xf5\xf3\x7f\xb2\xf6\x3f\xa9\x68\xff\x3f\x7d\x2d\x4b\xf0\x6b"
      "\x75\xd6\xb1\xff\xf9\x3b\xe7\x6a\xed\x7b\x7c\xfe\x03\xad\x92\xff\x3a\xe2"
      "\x50\xd5\xeb\x7f\xd6\xba\xdb\x59\x69\x7c\xa1\xe6\xfd\x39\xc6\x0b\xfd\x81"
      "\xf1\x52\xaf\xa0\xd2\xb3\x1f\x7e\xfe\x5d\xad\xfa\xe5\x3f\x74\x4e\xd6\xfe"
      "\x0f\x6e\x9e\xff\xfd\x49\xf9\xfd\x7a\xe6\x9f\xec\xf8\x7d\x11\x71\x6c\x31"
      "\x97\xaf\xb5\xbf\xd1\xfe\x7f\x5f\xf2\x56\x4f\xe9\xf8\x99\x0f\xa6\x16\x16"
      "\xae\x4f\x44\xf4\x25\x67\x2a\xb7\x4f\x3e\x59\xcc\xb0\x5b\x95\xf2\xa1\x94"
      "\x2f\x59\xfe\x1f\x7e\x6e\xf3\xf1\xbf\xd5\xfe\x7f\x59\x1e\xee\x89\x88\xa5"
      "\x3a\xeb\xfc\xff\xa3\xa1\x5f\x6b\xed\xd3\xfe\x43\xe7\x64\xf9\x3f\xbd\x79"
      "\xfb\x3f\xb2\xbe\xfd\x7f\xd2\xc2\x40\x4c\xde\x19\xf9\xbe\x78\x8b\xb1\x0a"
      "\xe7\xea\x6a\xff\x8f\x17\xda\xf4\xc3\xc5\x2d\xc6\xff\xa0\x5c\xe5\xfd\x38"
      "\xea\x4d\xd0\x8e\x84\x0b\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x3b\x5c\x1a\x11\xff"
      "\x89\x24\x1d\x5b\x2d\xa7\xe9\xd8\x58\xc4\x50\x44\xfc\x2f\x06\xd3\xd9\xb9"
      "\xf9\x85\x17\x2e\xcc\xbd\x77\x75\x3a\xdb\xb7\xfe\xf9\xff\xc3\x2b\xeb\x49"
      "\xe9\xf9\xff\x23\x65\xeb\x93\x1b\xd6\x8f\x45\xc4\xbe\x88\xf8\xa2\x67\x4f"
      "\x61\x7d\xec\xfc\xdc\xec\x74\xa7\x4f\x1e\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\xb6\x89\xa1\xc2\x35\xff\xf9\xfe\x8d\xd7\xff"
      "\x67\x7e\xeb\xe9\x74\x74\x40\xcb\xe5\x8a\x3f\xe5\x3b\x74\x9f\x5c\xc3\xaf"
      "\xcc\xf7\x37\x35\x10\xa0\xed\x1a\xcf\x7f\x60\xa7\xab\x3f\xff\x7b\x5b\x1a"
      "\x07\xd0\x7e\xb5\xf3\xff\xc1\xc3\x7c\x41\x5b\xc3\x01\xda\x48\xff\x1f\xba"
      "\x57\x83\xf9\xef\xeb\x02\xd8\x05\xb4\xff\xd0\xad\xea\x1c\xd3\x1b\x68\x75"
      "\x1c\x40\x27\xd4\xdd\xfe\x2f\xb7\x36\x0e\x00\x00\x00\x00\x00\xa0\x29\xf6"
      "\x1d\xbc\xfb\x73\x12\x11\x4b\x2f\xef\x29\x2c\x99\xbe\xe2\x3e\x93\xfd\x61"
      "\x77\x4b\x3b\x1d\x00\xd0\x31\xe6\xf0\x42\xf7\xca\xcd\x75\x3a\x02\xa0\x53"
      "\x7c\xc6\x07\x92\xd5\xd2\x5f\x55\x2f\xf6\x5f\x9b\xfd\xdf\x57\xf3\x95\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x40\x6b\x1d\x3a\xe0\xfa\x7f\xe8\x56"
      "\x69\xc4\x26\x8f\xf0\x36\xb7\x1f\x76\xb3\x4d\xae\xff\xaf\x96\xfc\x6e\x17"
      "\x00\xbb\x48\xed\x47\x7f\xd4\xd3\xf6\x27\x7a\x08\xb0\x83\xf9\x8c\x0f\x3c"
      "\xae\x1d\xaf\xfd\xf4\x3f\x3d\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x68\x9b\x81\x1b\x97\xa7\x66\x67\x67\xae\xcf\x2f\xee\xbc\xc2\xab\xdb\x23"
      "\x8c\x1a\x85\xec\xdd\xad\xb2\x6b\x69\xaa\xd3\x81\x35\xbf\xf0\xa8\x35\x47"
      "\xee\x8d\x88\xed\x71\x82\xed\x2e\x94\x6e\xc1\xd1\xc1\x30\x3a\xfb\xdf\x12"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xb0"
      "\xe6\xdf\x00\x00\x00\xff\xff\x4c\x32\x2e\x2e",
      1559));
  NONFAILING(syz_mount_image(/*fs=*/0x200000000080, /*dir=*/0x200000000040,
                             /*flags=MS_REC|MS_SYNCHRONOUS|MS_RDONLY*/ 0x4011,
                             /*opts=*/0x200000000900, /*chdir=*/0,
                             /*size=*/0x617, /*img=*/0x200000001f00));
  //  openat$dir arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 00} (length 0x2)
  //    }
  //    flags: open_flags = 0x0 (4 bytes)
  //    mode: open_mode = 0x1 (2 bytes)
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000040, ".\000", 2));
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                /*file=*/0x200000000040ul, /*flags=*/0, /*mode=S_IXOTH*/ 1);
  if (res != -1)
    r[1] = res;
  //  getdents arguments: [
  //    fd: fd_dir (resource)
  //    ent: nil
  //    count: len = 0x0 (8 bytes)
  //  ]
  syscall(__NR_getdents, /*fd=*/r[1], /*ent=*/0ul, /*count=*/0ul);
}
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;
}