// https://syzkaller.appspot.com/bug?id=ef01f350186f2234aaa4e9f787f66978c5142652
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

static unsigned long long procid;

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

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

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

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

//% This code is derived from puff.{c,h}, found in the zlib development. The
//% original files come with the following copyright notice:

//% Copyright (C) 2002-2013 Mark Adler, all rights reserved
//% version 2.3, 21 Jan 2013
//% This software is provided 'as-is', without any express or implied
//% warranty.  In no event will the author be held liable for any damages
//% arising from the use of this software.
//% Permission is granted to anyone to use this software for any purpose,
//% including commercial applications, and to alter it and redistribute it
//% freely, subject to the following restrictions:
//% 1. The origin of this software must not be misrepresented; you must not
//%    claim that you wrote the original software. If you use this software
//%    in a product, an acknowledgment in the product documentation would be
//%    appreciated but is not required.
//% 2. Altered source versions must be plainly marked as such, and must not be
//%    misrepresented as being the original software.
//% 3. This notice may not be removed or altered from any source distribution.
//% Mark Adler    madler@alumni.caltech.edu

//% BEGIN CODE DERIVED FROM puff.{c,h}

#define MAXBITS 15
#define MAXLCODES 286
#define MAXDCODES 30
#define MAXCODES (MAXLCODES + MAXDCODES)
#define FIXLCODES 288

struct puff_state {
  unsigned char* out;
  unsigned long outlen;
  unsigned long outcnt;
  const unsigned char* in;
  unsigned long inlen;
  unsigned long incnt;
  int bitbuf;
  int bitcnt;
  jmp_buf env;
};
static int puff_bits(struct puff_state* s, int need)
{
  long val = s->bitbuf;
  while (s->bitcnt < need) {
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    val |= (long)(s->in[s->incnt++]) << s->bitcnt;
    s->bitcnt += 8;
  }
  s->bitbuf = (int)(val >> need);
  s->bitcnt -= need;
  return (int)(val & ((1L << need) - 1));
}
static int puff_stored(struct puff_state* s)
{
  s->bitbuf = 0;
  s->bitcnt = 0;
  if (s->incnt + 4 > s->inlen)
    return 2;
  unsigned len = s->in[s->incnt++];
  len |= s->in[s->incnt++] << 8;
  if (s->in[s->incnt++] != (~len & 0xff) ||
      s->in[s->incnt++] != ((~len >> 8) & 0xff))
    return -2;
  if (s->incnt + len > s->inlen)
    return 2;
  if (s->outcnt + len > s->outlen)
    return 1;
  for (; len--; s->outcnt++, s->incnt++) {
    if (s->in[s->incnt])
      s->out[s->outcnt] = s->in[s->incnt];
  }
  return 0;
}
struct puff_huffman {
  short* count;
  short* symbol;
};
static int puff_decode(struct puff_state* s, const struct puff_huffman* h)
{
  int first = 0;
  int index = 0;
  int bitbuf = s->bitbuf;
  int left = s->bitcnt;
  int code = first = index = 0;
  int len = 1;
  short* next = h->count + 1;
  while (1) {
    while (left--) {
      code |= bitbuf & 1;
      bitbuf >>= 1;
      int count = *next++;
      if (code - count < first) {
        s->bitbuf = bitbuf;
        s->bitcnt = (s->bitcnt - len) & 7;
        return h->symbol[index + (code - first)];
      }
      index += count;
      first += count;
      first <<= 1;
      code <<= 1;
      len++;
    }
    left = (MAXBITS + 1) - len;
    if (left == 0)
      break;
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    bitbuf = s->in[s->incnt++];
    if (left > 8)
      left = 8;
  }
  return -10;
}
static int puff_construct(struct puff_huffman* h, const short* length, int n)
{
  int len;
  for (len = 0; len <= MAXBITS; len++)
    h->count[len] = 0;
  int symbol;
  for (symbol = 0; symbol < n; symbol++)
    (h->count[length[symbol]])++;
  if (h->count[0] == n)
    return 0;
  int left = 1;
  for (len = 1; len <= MAXBITS; len++) {
    left <<= 1;
    left -= h->count[len];
    if (left < 0)
      return left;
  }
  short offs[MAXBITS + 1];
  offs[1] = 0;
  for (len = 1; len < MAXBITS; len++)
    offs[len + 1] = offs[len] + h->count[len];
  for (symbol = 0; symbol < n; symbol++)
    if (length[symbol] != 0)
      h->symbol[offs[length[symbol]]++] = symbol;
  return left;
}
static int puff_codes(struct puff_state* s, const struct puff_huffman* lencode,
                      const struct puff_huffman* distcode)
{
  static const short lens[29] = {3,  4,  5,  6,   7,   8,   9,   10,  11, 13,
                                 15, 17, 19, 23,  27,  31,  35,  43,  51, 59,
                                 67, 83, 99, 115, 131, 163, 195, 227, 258};
  static const short lext[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2,
                                 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0};
  static const short dists[30] = {
      1,    2,    3,    4,    5,    7,    9,    13,    17,    25,
      33,   49,   65,   97,   129,  193,  257,  385,   513,   769,
      1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577};
  static const short dext[30] = {0, 0, 0,  0,  1,  1,  2,  2,  3,  3,
                                 4, 4, 5,  5,  6,  6,  7,  7,  8,  8,
                                 9, 9, 10, 10, 11, 11, 12, 12, 13, 13};
  int symbol;
  do {
    symbol = puff_decode(s, lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 256) {
      if (s->outcnt == s->outlen)
        return 1;
      if (symbol)
        s->out[s->outcnt] = symbol;
      s->outcnt++;
    } else if (symbol > 256) {
      symbol -= 257;
      if (symbol >= 29)
        return -10;
      int len = lens[symbol] + puff_bits(s, lext[symbol]);
      symbol = puff_decode(s, distcode);
      if (symbol < 0)
        return symbol;
      unsigned dist = dists[symbol] + puff_bits(s, dext[symbol]);
      if (dist > s->outcnt)
        return -11;
      if (s->outcnt + len > s->outlen)
        return 1;
      while (len--) {
        if (dist <= s->outcnt && s->out[s->outcnt - dist])
          s->out[s->outcnt] = s->out[s->outcnt - dist];
        s->outcnt++;
      }
    }
  } while (symbol != 256);
  return 0;
}
static int puff_fixed(struct puff_state* s)
{
  static int virgin = 1;
  static short lencnt[MAXBITS + 1], lensym[FIXLCODES];
  static short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  static struct puff_huffman lencode, distcode;
  if (virgin) {
    lencode.count = lencnt;
    lencode.symbol = lensym;
    distcode.count = distcnt;
    distcode.symbol = distsym;
    short lengths[FIXLCODES];
    int symbol;
    for (symbol = 0; symbol < 144; symbol++)
      lengths[symbol] = 8;
    for (; symbol < 256; symbol++)
      lengths[symbol] = 9;
    for (; symbol < 280; symbol++)
      lengths[symbol] = 7;
    for (; symbol < FIXLCODES; symbol++)
      lengths[symbol] = 8;
    puff_construct(&lencode, lengths, FIXLCODES);
    for (symbol = 0; symbol < MAXDCODES; symbol++)
      lengths[symbol] = 5;
    puff_construct(&distcode, lengths, MAXDCODES);
    virgin = 0;
  }
  return puff_codes(s, &lencode, &distcode);
}
static int puff_dynamic(struct puff_state* s)
{
  static const short order[19] = {16, 17, 18, 0, 8,  7, 9,  6, 10, 5,
                                  11, 4,  12, 3, 13, 2, 14, 1, 15};
  int nlen = puff_bits(s, 5) + 257;
  int ndist = puff_bits(s, 5) + 1;
  int ncode = puff_bits(s, 4) + 4;
  if (nlen > MAXLCODES || ndist > MAXDCODES)
    return -3;
  short lengths[MAXCODES];
  int index;
  for (index = 0; index < ncode; index++)
    lengths[order[index]] = puff_bits(s, 3);
  for (; index < 19; index++)
    lengths[order[index]] = 0;
  short lencnt[MAXBITS + 1], lensym[MAXLCODES];
  struct puff_huffman lencode = {lencnt, lensym};
  int err = puff_construct(&lencode, lengths, 19);
  if (err != 0)
    return -4;
  index = 0;
  while (index < nlen + ndist) {
    int symbol;
    int len;
    symbol = puff_decode(s, &lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 16)
      lengths[index++] = symbol;
    else {
      len = 0;
      if (symbol == 16) {
        if (index == 0)
          return -5;
        len = lengths[index - 1];
        symbol = 3 + puff_bits(s, 2);
      } else if (symbol == 17)
        symbol = 3 + puff_bits(s, 3);
      else
        symbol = 11 + puff_bits(s, 7);
      if (index + symbol > nlen + ndist)
        return -6;
      while (symbol--)
        lengths[index++] = len;
    }
  }
  if (lengths[256] == 0)
    return -9;
  err = puff_construct(&lencode, lengths, nlen);
  if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1]))
    return -7;
  short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  struct puff_huffman distcode = {distcnt, distsym};
  err = puff_construct(&distcode, lengths + nlen, ndist);
  if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1]))
    return -8;
  return puff_codes(s, &lencode, &distcode);
}
static int puff(unsigned char* dest, unsigned long* destlen,
                const unsigned char* source, unsigned long sourcelen)
{
  struct puff_state s = {
      .out = dest,
      .outlen = *destlen,
      .outcnt = 0,
      .in = source,
      .inlen = sourcelen,
      .incnt = 0,
      .bitbuf = 0,
      .bitcnt = 0,
  };
  int err;
  if (setjmp(s.env) != 0)
    err = 2;
  else {
    int last;
    do {
      last = puff_bits(&s, 1);
      int type = puff_bits(&s, 2);
      err = type == 0 ? puff_stored(&s)
                      : (type == 1 ? puff_fixed(&s)
                                   : (type == 2 ? puff_dynamic(&s) : -1));
      if (err != 0)
        break;
    } while (!last);
  }
  *destlen = s.outcnt;
  return err;
}

//% END CODE DERIVED FROM puff.{c,h}

#define ZLIB_HEADER_WIDTH 2

static int puff_zlib_to_file(const unsigned char* source,
                             unsigned long sourcelen, int dest_fd)
{
  if (sourcelen < ZLIB_HEADER_WIDTH)
    return 0;
  source += ZLIB_HEADER_WIDTH;
  sourcelen -= ZLIB_HEADER_WIDTH;
  const unsigned long max_destlen = 132 << 20;
  void* ret = mmap(0, max_destlen, PROT_WRITE | PROT_READ,
                   MAP_PRIVATE | MAP_ANON, -1, 0);
  if (ret == MAP_FAILED)
    return -1;
  unsigned char* dest = (unsigned char*)ret;
  unsigned long destlen = max_destlen;
  int err = puff(dest, &destlen, source, sourcelen);
  if (err) {
    munmap(dest, max_destlen);
    errno = -err;
    return -1;
  }
  if (write(dest_fd, dest, destlen) != (ssize_t)destlen) {
    munmap(dest, max_destlen);
    return -1;
  }
  return munmap(dest, max_destlen);
}

static int setup_loop_device(unsigned char* data, unsigned long size,
                             const char* loopname, int* loopfd_p)
{
  int err = 0, loopfd = -1;
  int memfd = syscall(__NR_memfd_create, "syzkaller", 0);
  if (memfd == -1) {
    err = errno;
    goto error;
  }
  if (puff_zlib_to_file(data, size, memfd)) {
    err = errno;
    goto error_close_memfd;
  }
  loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    err = errno;
    goto error_close_memfd;
  }
  if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
    if (errno != EBUSY) {
      err = errno;
      goto error_close_loop;
    }
    ioctl(loopfd, LOOP_CLR_FD, 0);
    usleep(1000);
    if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
      err = errno;
      goto error_close_loop;
    }
  }
  close(memfd);
  *loopfd_p = loopfd;
  return 0;

error_close_loop:
  close(loopfd);
error_close_memfd:
  close(memfd);
error:
  errno = err;
  return -1;
}

static void reset_loop_device(const char* loopname)
{
  int loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    return;
  }
  if (ioctl(loopfd, LOOP_CLR_FD, 0)) {
  }
  close(loopfd);
}

static long syz_mount_image(volatile long fsarg, volatile long dir,
                            volatile long flags, volatile long optsarg,
                            volatile long change_dir,
                            volatile unsigned long size, volatile long image)
{
  unsigned char* data = (unsigned char*)image;
  int res = -1, err = 0, need_loop_device = !!size;
  char* mount_opts = (char*)optsarg;
  char* target = (char*)dir;
  char* fs = (char*)fsarg;
  char* source = NULL;
  char loopname[64];
  if (need_loop_device) {
    int loopfd;
    memset(loopname, 0, sizeof(loopname));
    snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
    if (setup_loop_device(data, size, loopname, &loopfd) == -1)
      return -1;
    close(loopfd);
    source = loopname;
  }
  mkdir(target, 0777);
  char opts[256];
  memset(opts, 0, sizeof(opts));
  if (strlen(mount_opts) > (sizeof(opts) - 32)) {
  }
  strncpy(opts, mount_opts, sizeof(opts) - 32);
  if (strcmp(fs, "iso9660") == 0) {
    flags |= MS_RDONLY;
  } else if (strncmp(fs, "ext", 3) == 0) {
    bool has_remount_ro = false;
    char* remount_ro_start = strstr(opts, "errors=remount-ro");
    if (remount_ro_start != NULL) {
      char after = *(remount_ro_start + strlen("errors=remount-ro"));
      char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1);
      has_remount_ro = ((before == '\0' || before == ',') &&
                        (after == '\0' || after == ','));
    }
    if (strstr(opts, "errors=panic") || !has_remount_ro)
      strcat(opts, ",errors=continue");
  } else if (strcmp(fs, "xfs") == 0) {
    strcat(opts, ",nouuid");
  }
  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;
retry:
  const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW;
  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 (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  memcpy((void*)0x20000140, "nilfs2\000", 7);
  memcpy((void*)0x20000000, "./file0\000", 8);
  *(uint64_t*)0x20000540 = 0;
  sprintf((char*)0x20000548, "%020llu", (long long)-1);
  *(uint16_t*)0x2000055c = -1;
  sprintf((char*)0x2000055e, "0x%016llx", (long long)-1);
  *(uint32_t*)0x20000570 = -1;
  *(uint16_t*)0x20000574 = -1;
  *(uint64_t*)0x20000576 = -1;
  sprintf((char*)0x2000057e, "%023llo", (long long)-1);
  memcpy(
      (void*)0x20000595,
      "\xa3\x51\x62\x9a\x0e\xc9\xe3\x78\x2f\xfe\xc3\x40\xfa\x6a\x5a\x82\xa5\x65"
      "\x46\x5a\x00\xfd\x03\x1c\x05\xeb\x8e\x4d\x01\x1b\x0d\x9b\x07\x87\x15\x62"
      "\x75\xa5\x9d\xdb\x68\xa2\xd6\x6b\x58\x02\x24\xdb\x7a\xa8\x06\xff\x05\x87"
      "\x79\x6b\x8b\xb5\x0e\xe6\x98\x69\xd0\x6f\x54\x9c\x4a\xca\xe5\x1b\x91\x6d"
      "\x5d\x69\x9e\xd3\x03\xfc\x53\x6f\xd9\x29\xcd\xe3\xc4\x7f\x80\xb1\x8d\xae"
      "\x1b\x50\xb5\x9f\xb9\x41\xa2\x33\x61\x5b\x2e\xc3\x7a\xc7\x57\x74\xbb\x27"
      "\x6a\xf0\x48\x3e\x65\x85\xe8\xd9\xff\x42\x17\x39\x5e\x46\xaf\x33\x34\x3c"
      "\x64\xb3\x49\x0c\x72\xee\xd7\x4d\xab\xd5\x82\x35\xeb\xe5\x48\x94\xb2\xb2"
      "\x82\x8a\xdd\x6e\xa9\xfa\xb4\xb1\x3d\x6b",
      154);
  *(uint64_t*)0x2000062f = 0;
  sprintf((char*)0x20000637, "%023llo", (long long)-1);
  memcpy(
      (void*)0x200042c0,
      "\x78\x9c\xec\xdd\x4d\x8c\x1b\x57\x1d\x00\xf0\xf1\xee\x7a\x93\x6d\x53\xe2"
      "\x94\x84\x86\xb4\xb4\x09\x85\xb6\x02\xba\xdb\xec\x86\xf0\x11\x41\x53\x35"
      "\x17\xa2\x06\x71\xab\x54\x71\x89\xd2\xb4\x44\xa4\x01\x91\x4a\xd0\xaa\x12"
      "\x49\x4e\xdc\x68\x15\x85\x1b\xe2\x43\x9c\x7a\xa9\x00\x21\xd1\x0b\x8a\x7a"
      "\xe2\x52\x89\x46\xe2\xd2\x53\xe1\xc0\x81\x28\x48\x95\x38\x40\x4b\x62\xb4"
      "\xde\xf7\xbc\xf6\x3f\x76\xc7\xde\xaf\x59\xaf\x7f\x3f\x69\xfc\x3c\xf3\xde"
      "\xcc\x7b\x33\x9e\x19\xcf\xe7\x7b\x05\x30\xb6\x26\x5a\x9f\xf5\xd6\xe7\x95"
      "\x37\x2f\x1f\xfb\xe7\x43\xff\x98\x59\xfc\xfe\x78\x3b\x45\xa3\xf5\x39\xd5"
      "\xd1\xb7\x98\xba\x96\xfa\xa7\xc2\xf4\xde\x9b\x5c\x0a\x6f\xbe\xff\xca\xa9"
      "\x5e\x61\xad\x98\x6f\x7d\xe6\xfe\xc9\x8e\x71\xef\x2c\x8a\xe2\x42\xb1\xbf"
      "\xb8\x5a\x34\x8a\x7d\x57\xae\xbd\xf6\xf6\xfc\x53\x27\x2e\x1e\xbf\x74\xe0"
      "\x9d\xd7\x8f\x5c\x5f\x87\x59\x07\x00\x80\xb1\xf3\xad\xab\x47\x0e\xed\xf9"
      "\xdb\x5f\xee\xdd\xf5\xc1\x1b\xf7\x1f\x2d\xb6\xb5\x87\xe7\xe3\xf3\x46\xea"
      "\xdf\x91\x8e\xfb\x8f\xa6\x03\xff\xc5\x60\xaa\x96\xcf\x1f\x96\xcf\x07\x6a"
      "\x1d\x5d\xa7\xe9\x90\x6e\x2a\x75\x13\x21\xdd\x64\x8f\x74\x45\x47\xba\x7a"
      "\x4e\xb7\xbd\x7b\xbc\x98\xff\x74\x98\x6e\xbd\x4f\xba\x6d\x25\xf9\x4f\x86"
      "\x73\x94\x5a\x28\x0f\x8c\xb2\xbc\x1e\x37\x8a\xda\xc4\x6c\x57\xff\xc4\xc4"
      "\xec\xec\xd2\x39\x79\xd1\x3a\xaf\x9f\xae\xcd\x9e\x3b\x73\xf6\xb9\xf3\x15"
      "\x15\x14\x58\x73\xff\x7e\xa0\x28\x8a\xfd\x3a\xdd\xb8\x75\xcd\x9d\xed\x8d"
      "\xa0\xf2\xb2\x54\xd7\x75\x2c\x05\x80\x4a\xc5\xfb\x85\xb7\xb9\x10\xaf\x2c"
      "\xac\x4e\x7b\x6a\x53\x83\xe5\x7f\xe3\x89\x89\xde\xe3\x77\xab\xaf\x65\x19"
      "\x19\x1f\x1b\xbd\xfe\xcb\x3f\x4e\xbf\xbb\x1c\x1b\x9d\x7f\xd9\xfc\xff\xe6"
      "\xe2\x3a\xcf\x3f\x63\x65\xf0\xb5\x69\xfb\xba\x96\x63\xad\xe5\xf9\xca\xdb"
      "\xd1\x8e\xd4\x1f\xef\x23\xc4\xe7\x97\x86\xdd\xff\xe4\xe9\x4d\x86\xe9\x0d"
      "\x7a\x00\xd0\xef\x3e\xc2\xa8\xdc\x5f\xe8\x57\xce\xc9\x0d\x2e\xc7\x4a\xf5"
      "\x2b\x7f\x5c\x2f\xb6\xaa\xaf\xa5\x30\x2f\x87\xaf\x87\xf8\xce\xed\x27\xfe"
      "\xa6\xa3\xf2\x1b\x03\xbd\xfd\x67\xad\xaf\xff\xe7\xbf\xc7\x15\x4f\x63\x66"
      "\xb9\x70\x9b\xe0\xfa\xa8\x4e\xb7\x95\xbb\x66\x55\x3b\x1e\xa0\x7a\x25\xa7"
      "\xf5\xf1\xb9\xb9\x66\x92\xe3\xe3\x73\x7d\x31\x7e\x5b\x49\xfc\xf6\x92\xf8"
      "\x99\x92\xf8\x3b\x4a\xe2\xef\x2c\x89\x87\x71\xf6\xfb\x17\x7f\x5a\xbc\x5a"
      "\x2b\x7a\xbe\x8f\x57\x2c\x9d\xff\xb7\x36\x96\x41\xaf\x87\xe5\xeb\x6c\x77"
      "\xa5\xf0\x63\x43\x96\x27\x5e\x8f\x1c\xf6\x7a\x5c\x7c\xee\x77\x58\xab\xcd"
      "\x3f\x3e\x4f\x0c\x9b\xd9\x1f\x4f\x3e\x7d\xfa\xcb\xcf\x3e\x73\x6d\xe9\xf9"
      "\xff\x5a\x7b\xfd\xbf\x95\xd6\xf7\xfd\xa9\xbf\x91\xb6\xad\xab\x29\x41\xbe"
      "\x5e\x18\xaf\xab\xb7\x9f\xfd\x6f\x74\xe7\x33\xd1\x27\xdd\xdd\xa1\x3c\x77"
      "\xf5\x48\xdf\xfa\xbe\xbb\x3b\x5d\x6d\xf7\xf2\x74\x8a\x8e\xfd\xcc\x6d\xe5"
      "\xd8\xdb\x3d\xde\xce\x7e\xe9\xee\xeb\x4e\xd7\x08\xe9\x66\x52\x17\x0f\x97"
      "\xe2\xf1\xc9\x1d\x61\xbc\x7c\xfc\x91\xf7\xab\x79\x79\x4d\x85\xf9\xad\x87"
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      "\xf7\xfc\x7f\x5e\x3f\xf7\x16\xf5\xda\x73\x67\xce\x9e\x7e\x2c\xf5\xe7\xf5"
      "\xf4\xcf\x93\xf5\x6d\x8b\xc3\x0f\x6e\x70\xb9\x81\xd5\x1b\xf4\xfd\x9f\xbd"
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      "\x3d\xf5\xbd\xb3\xcf\xae\xf5\xcc\xc3\x98\x3b\xff\xd2\xcb\xdf\x3d\x79\xf6"
      "\xec\xe9\x1f\xf8\xe2\x8b\x2f\xbe\xb4\xbf\x54\xbd\x67\x02\xd6\xdb\xdc\x8b"
      "\x2f\x7c\x7f\xee\xfc\x4b\x2f\x3f\x7a\xe6\x85\x93\xcf\x9f\x7e\xfe\xf4\xb9"
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      "\x1e\xd8\x4a\x96\xff\xf4\xab\x2e\x09\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x30\xa8\x1f\x1e\x3f\x76\xed\xaf\x6f\x7d\xe9\xdd\xa5\xf7\xff\x97\xdf\xff"
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      "\x0f\xe5\xdd\x1d\xf2\xd9\x13\xc6\xfb\x44\x0a\xdb\xed\xf8\xa5\xf7\xff\x73"
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      "\x4e\x19\xfe\x2f\xe5\x9f\x17\xdb\x23\x0f\x0e\x9a\xff\xd2\x04\x6a\x13\xdd"
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      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa8\xcc"
      "\x44\xeb\xf3\xd0\xa1\xbd\xb5\xa2\xb8\xf2\xe6\xe5\x63\x4f\x9f\x38\x33\xb7"
      "\x38\xe4\xf1\x76\x8a\x46\xeb\x73\xaa\xa3\xaf\xde\x1e\xaf\x28\x1e\x4b\xe1"
      "\x64\x0a\x7f\x99\xbe\xdc\x7c\xff\x95\x53\x9d\xe1\xad\x14\xd6\x8a\xf9\xa2"
      "\x56\xd4\xda\xc3\x8b\x6f\xde\x68\xe7\x74\x67\x51\x14\x17\x8a\xfd\xc5\xd5"
      "\xa2\x51\xec\xbb\x72\xed\xb5\xb7\xe7\x9f\x3a\x71\xf1\xf8\xa5\x03\xef\xbc"
      "\x7e\xe4\xfa\xfa\x2d\x01\x00\x00\x00\xd8\xfa\xfe\x1f\x00\x00\xff\xff\x2a"
      "\xa9\x1b\xe2",
      2703);
  syz_mount_image(
      /*fs=*/0x20000140, /*dir=*/0x20000000,
      /*flags=MS_POSIXACL|MS_NOEXEC|MS_NODIRATIME|MS_NODEV*/ 0x1080c,
      /*opts=*/0x20000540, /*chdir=*/1, /*size=*/0xa8f, /*img=*/0x200042c0);
  memcpy((void*)0x20000080, "./file0\000", 8);
  memcpy((void*)0x200000c0, "ramfs\000", 6);
  syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x20000080ul, /*type=*/0x200000c0ul,
          /*flags=*/0ul, /*data=*/0ul);
  memcpy((void*)0x20000140, "./file0\000", 8);
  res = syscall(__NR_open, /*file=*/0x20000140ul, /*flags=*/0ul, /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  syscall(__NR_fchdir, /*fd=*/r[0]);
  memcpy((void*)0x20000040, "./file0\000", 8);
  syscall(__NR_mkdir, /*path=*/0x20000040ul, /*mode=*/0ul);
  memcpy((void*)0x20000400, "./file1\000", 8);
  syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x20000400ul, /*mode=*/0ul);
  memcpy((void*)0x200000c0, "./bus\000", 6);
  syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x200000c0ul, /*mode=*/0ul);
  memcpy((void*)0x200000c0, "./bus\000", 6);
  memcpy((void*)0x20000080, "overlay\000", 8);
  memcpy((void*)0x20000500, "workdir", 7);
  *(uint8_t*)0x20000507 = 0x3d;
  memcpy((void*)0x20000508, "./bus", 5);
  *(uint8_t*)0x2000050d = 0x2c;
  memcpy((void*)0x2000050e, "lowerdir", 8);
  *(uint8_t*)0x20000516 = 0x3d;
  memcpy((void*)0x20000517, "./file0", 7);
  *(uint8_t*)0x2000051e = 0x2c;
  memcpy((void*)0x2000051f, "upperdir", 8);
  *(uint8_t*)0x20000527 = 0x3d;
  memcpy((void*)0x20000528, "./file1", 7);
  *(uint8_t*)0x2000052f = 0x2c;
  *(uint8_t*)0x20000530 = 0;
  syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x200000c0ul, /*type=*/0x20000080ul,
          /*flags=*/0ul, /*opts=*/0x20000500ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  use_temporary_dir();
  loop();
  return 0;
}