// https://syzkaller.appspot.com/bug?id=0a52da0bbfd5ff2cd097edb1607fd2bda63a1c4d
// 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 279
#endif
#ifndef __NR_mmap
#define __NR_mmap 222
#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);
  }
}

void execute_one(void)
{
  memcpy((void*)0x20000040, "ext4\000", 5);
  memcpy((void*)0x20000500, "./file1\000", 8);
  *(uint8_t*)0x20000540 = 0;
  memcpy(
      (void*)0x20001b00,
      "\x78\x9c\xec\xdd\xdf\x6b\x5b\xd7\x1d\x00\xf0\xef\xbd\xb6\xb2\xfc\x70\x66"
      "\x67\xdb\x43\x16\x58\x16\x96\x0c\x27\x6c\x91\xec\x78\x49\xcc\x1e\xb2\x0c"
      "\xc6\xf2\x14\xd8\x96\xbd\x67\x9e\x2d\x1b\x63\xd9\x32\x96\x9c\xc4\x26\x0c"
      "\x87\xfd\x01\x83\x31\xd6\x42\x9f\xfa\xd4\x97\x42\xff\x80\x42\xc9\x9f\x50"
      "\x0a\x81\xf6\xbd\xb4\xa5\xa5\xb4\x49\xfb\xd0\x87\xb6\x2a\x92\xae\xd2\xc4"
      "\x95\x62\x87\xc8\xbe\x60\x7f\x3e\x70\x7c\xcf\xb9\x57\xd2\xf7\x7b\x6c\x74"
      "\x75\xcf\xbd\xc7\xba\x01\xec\x5b\xa7\x22\xe2\x6a\x44\x0c\x44\xc4\xb9\x88"
      "\x18\xce\xd6\xa7\x59\xb9\xd6\x6c\x6c\xb4\x1f\xf7\xe8\xe1\xdd\xe9\x66\x49"
      "\xa2\xd1\xb8\xf1\x59\x12\x49\xb6\xae\xf3\x5a\x49\xb6\x3c\xd2\x7e\x4a\x1c"
      "\x8c\x88\xbf\x5d\x8b\xf8\x67\xf2\xc3\xb8\xb5\xb5\xf5\x85\xa9\x4a\xa5\xbc"
      "\x92\xb5\x4b\xf5\xc5\xe5\x52\x6d\x6d\xfd\xfc\xfc\xe2\xd4\x5c\x79\xae\xbc"
      "\x34\x31\x31\x7e\x69\xf2\xf2\xe4\xc5\xc9\xb1\xbe\xf4\x73\x24\x22\xae\xfc"
      "\xe9\xa3\xff\xff\xe7\xb5\x3f\x5f\x79\xeb\xb7\xb7\xdf\xbf\xf9\xc9\xd9\x7f"
      "\x35\xd3\x1a\xca\xb6\x3f\xd9\x8f\x7e\x6a\x77\xbd\xd0\xfa\x5d\x74\x0c\x46"
      "\xc4\xca\x4e\x04\xcb\xc1\x40\xb6\x2c\xe4\x9c\x07\x00\x00\xdb\xd3\x3c\xc6"
      "\xff\x49\x44\xfc\xaa\x75\xfc\x3f\x1c\x03\xad\xa3\x53\x00\x00\x00\x60\x2f"
      "\x69\xfc\x61\x28\xbe\x4e\x22\x1a\x00\x00\x00\xc0\x9e\x95\xb6\xe6\xc0\x26"
      "\x69\x31\x9b\x0b\x30\x14\x69\x5a\x2c\xb6\xe7\xf0\xfe\x2c\x0e\xa7\x95\x6a"
      "\xad\xfe\x9b\xd9\xea\xea\xd2\x4c\x7b\xae\xec\x48\x14\xd2\xd9\xf9\x4a\x79"
      "\x2c\x9b\x2b\x3c\x12\x85\xa4\xd9\x1e\xcf\xe6\xd8\x76\xda\x17\x36\xb5\x27"
      "\x22\xe2\x58\x44\xfc\x6f\xf8\x50\xab\x5d\x9c\xae\x56\x66\xf2\x3e\xf9\x01"
      "\x00\x00\x00\xfb\xc4\x91\x4d\xe3\xff\x2f\x87\xdb\xe3\x7f\x00\x00\x00\x60"
      "\x8f\x19\xc9\x3b\x01\x00\x00\x00\x60\xc7\x19\xff\x03\x00\x00\xc0\xde\x67"
      "\xfc\x0f\x00\x00\x00\x7b\xda\x5f\xae\x5f\x6f\x96\x46\xe7\xfe\xd7\x33\xb7"
      "\xd6\x56\x17\xaa\xb7\xce\xcf\x94\x6b\x0b\xc5\xc5\xd5\xe9\xe2\x74\x75\x65"
      "\xb9\x38\x57\xad\xce\xb5\xbe\xb3\x6f\x71\xab\xd7\xab\x54\xab\xcb\xbf\x8b"
      "\xa5\xd5\x3b\xa5\x7a\xb9\x56\x2f\xd5\xd6\xd6\x6f\x2e\x56\x57\x97\xea\x37"
      "\xe7\x9f\xba\x05\x36\x00\x00\x00\xb0\x8b\x8e\xfd\xf2\xfe\x7b\x49\x44\x6c"
      "\xfc\xfe\x50\xab\x34\x1d\xc8\x3b\x29\x60\x57\x24\xcf\xf3\xe0\x0f\x77\x2e"
      "\x0f\x60\xf7\x0d\xe4\x9d\x00\x90\x9b\xc1\xbc\x13\x00\x72\x53\xc8\x3b\x01"
      "\x20\x77\x5b\x9d\x07\xe8\x39\x79\xe7\xed\xfe\xe7\x02\x00\x00\xec\x8c\xd1"
      "\x9f\xf7\xbe\xfe\xef\xdc\x00\xec\x6d\x69\xde\x09\x00\x00\xbb\xce\xf5\x7f"
      "\xd8\xbf\x0a\x66\x00\xc2\xbe\xf7\xe3\x2d\xb6\xbf\xf8\xf5\xff\x46\xe3\xb9"
      "\x12\x02\x00\x00\xfa\x6e\xa8\x55\x92\xb4\x98\x5d\x0b\x1c\x8a\x34\x2d\x16"
      "\x23\x8e\xb6\x6e\x0b\x50\x48\x66\xe7\x2b\xe5\xb1\x6c\x7c\xf0\xee\x70\xe1"
      "\x47\xcd\xf6\x78\xeb\x99\xc9\xf3\xfd\xef\x30\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xec\x63\x8d\x46\x12\x0d"
      "\x00\x00\x00\x60\x4f\x8b\x48\x3f\x4e\x5a\xdf\xe6\x1f\x31\x3a\x7c\x66\x68"
      "\xf3\xf9\x81\x03\xc9\x57\xc3\xad\x65\x44\xdc\x7e\xe5\xc6\x4b\x77\xa6\xea"
      "\xf5\x95\xf1\xe6\xfa\xcf\x1f\xaf\xaf\xbf\x9c\xad\xbf\x90\xc7\x19\x0c\x00"
      "\x00\x00\x60\xb3\xce\x38\xbd\x33\x8e\x07\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x7e\x7a\xf4\xf0\xee\x74\xa7"
      "\xec\x66\xdc\x4f\xff\x18\x11\x23\xdd\xe2\x0f\xc6\xc1\xd6\xf2\x60\x14\x22"
      "\xe2\xf0\x17\x49\x0c\x3e\xf1\xbc\x24\x22\x06\xfa\x10\x7f\xe3\x5e\x44\x1c"
      "\xef\x16\x3f\x69\xa6\x15\x23\x59\x16\xdd\xe2\x1f\xca\x31\x7e\x1a\x11\x47"
      "\xfa\x10\x1f\xf6\xb3\xfb\xcd\xfd\xcf\xd5\x6e\xef\xbf\x34\x4e\xb5\x96\xdd"
      "\xdf\x7f\x83\x59\x79\x51\xbd\xf7\x7f\xe9\xe3\xfd\xdf\x40\x8f\xfd\xcf\xd1"
      "\x6d\xc6\x38\xf1\xe0\x8d\x52\xcf\xf8\xf7\x22\x4e\x0c\x76\xdf\xff\x74\xe2"
      "\x27\x3d\xe2\x9f\xde\x66\xfc\x7f\xfc\x7d\x7d\xbd\xd7\xb6\xc6\xab\x11\xa3"
      "\x5d\x3f\x7f\x92\xa7\x62\x95\xea\x8b\xcb\xa5\xda\xda\xfa\xf9\xf9\xc5\xa9"
      "\xb9\xf2\x5c\x79\x69\x62\x62\xfc\xd2\xe4\xe5\xc9\x8b\x93\x63\xa5\xd9\xf9"
      "\x4a\x39\xfb\xd9\x35\xc6\x7f\x7f\xf1\xe6\xb7\xcf\xea\xff\xe1\x1e\xf1\x47"
      "\xb6\xe8\xff\x99\x6d\xf6\xff\x9b\x07\x77\x1e\xfe\xb4\x5d\x2d\x74\x8b\x7f"
      "\xf6\x74\xf7\xcf\xdf\xe3\x3d\xe2\xa7\xd9\x67\xdf\xaf\xb3\x7a\x73\xfb\x68"
      "\xa7\xbe\xd1\xae\x3f\xe9\xe4\xeb\xef\x9c\x7c\x56\xff\x67\x7a\xf4\x7f\xab"
      "\xbf\xff\xd9\x6d\xf6\xff\xdc\x5f\xff\xfd\xc1\x36\x1f\x0a\x00\xec\x82\xda"
      "\xda\xfa\xc2\x54\xa5\x52\x5e\x51\x51\x51\x51\x79\x5c\xc9\x7b\xcf\x04\x00"
      "\x00\xf4\xdb\xf7\x07\xfd\x79\x67\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\xfb\xd7\x6e\x7c\x9d\xd8\xe6\x98\x1b\xf9\x74\x15"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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\x99\xbe\x0b\x00\x00\xff\xff\xf7\xa0\xd4\xed",
      1204);
  syz_mount_image(
      /*fs=*/0x20000040, /*dir=*/0x20000500,
      /*flags=MS_REC|MS_SYNCHRONOUS|MS_RDONLY|MS_NOATIME|0x100*/ 0x4511,
      /*opts=*/0x20000540, /*chdir=*/0x12, /*size=*/0x4b4, /*img=*/0x20001b00);
  memcpy((void*)0x20000100, "ext4\000", 5);
  memcpy((void*)0x20000200, "./file1\000", 8);
  *(uint8_t*)0x20000240 = 0;
  memcpy(
      (void*)0x20000b00,
      "\x78\x9c\xec\xdd\xd1\x6b\x5b\x5f\x1d\x00\xf0\xef\xbd\x6d\x7e\xbf\x6e\xeb"
      "\xcf\x64\x2a\xa2\x03\xe7\x70\x93\x6e\xe8\x92\x76\x75\x5b\x11\x99\x13\x44"
      "\x9f\x06\xea\x7c\xaf\xb5\x4d\x4b\x69\xda\x94\x26\x9d\x6b\x19\xda\xe1\x1f"
      "\x20\x88\xa8\xe0\x93\x4f\xbe\x08\xfe\x01\x82\xec\xc1\x3f\x40\x84\x81\xbe"
      "\x8b\x0e\x45\x74\xd3\x07\x1f\x74\x57\x92\xdc\xea\xd6\x25\x6d\x64\x5d\xd3"
      "\xa5\x9f\x0f\x9c\xdd\x73\xee\x49\xf2\xfd\x9e\xac\xb9\xb9\x37\xf7\x70\x6f"
      "\x00\x27\xd6\x85\x88\xb8\x1d\x11\x23\x11\x71\x25\x22\x8a\xf9\xfa\x34\x2f"
      "\xb3\xad\xc6\x4e\xe7\x71\xcf\x9e\x3e\x98\x6f\x95\x24\xb2\xec\xee\x5f\x93"
      "\x48\xf2\x75\xbb\xaf\xd5\x6a\x8f\x46\xc4\x99\xce\x53\x62\x2c\x22\xbe\xfa"
      "\xa5\x88\x6f\x24\xaf\xc6\x6d\x6c\x6d\xaf\xcc\xd5\x6a\xd5\x8d\xbc\x5d\x69"
      "\xae\xae\x57\x1a\x5b\xdb\x57\x97\x57\xe7\x96\xaa\x4b\xd5\xb5\xe9\xe9\xa9"
      "\x1b\x33\x37\x67\xae\xcf\x4c\x66\xb9\xd7\x1a\x67\x29\x22\x6e\x7d\xe1\xc9"
      "\x0f\xbe\xfb\xd3\x2f\xde\xfa\xe5\xa7\xbe\xf9\xfb\xd9\x3f\x5f\xfe\x56\x2b"
      "\xad\xcf\x7e\xa8\xd3\xff\xe2\x38\x0e\x53\x67\xe8\x85\xf6\x7b\xb1\xab\xf5"
      "\x1e\x6d\xbc\x89\x60\x03\x30\x92\x8f\xa7\x30\xe8\x44\x00\x00\xe8\x4b\x6b"
      "\x1f\xff\xfd\x11\xf1\xf1\xf6\xfe\x7f\x31\x46\xda\x7b\x73\x00\x00\x00\xc0"
      "\x30\xc9\x3e\x37\x1e\xff\x4a\x22\x32\x00\x00\x00\x60\x68\xa5\x11\x31\x1e"
      "\x49\x5a\xce\xe7\x02\x8c\x47\x9a\x96\xcb\x9d\x39\xbc\x1f\x8c\xd3\x69\xad"
      "\xde\x68\x7e\x72\xb1\xbe\xb9\xb6\xd0\xea\x8b\x28\x45\x21\x5d\x5c\xae\x55"
      "\x27\xf3\xb9\xc2\xa5\x28\x24\xad\xf6\x54\x3e\xc7\x76\xb7\x7d\x6d\x4f\x7b"
      "\x3a\x22\xce\x46\xc4\xf7\x8b\xa7\xda\xed\xf2\x7c\xbd\xb6\x30\xe8\x1f\x3f"
      "\x00\x00\x00\xe0\x84\x38\xb3\xe7\xf8\xff\x1f\xc5\xb4\x5d\x07\x00\x00\x00"
      "\x86\x4c\xa9\x67\x03\x00\x00\x00\x18\x16\x0e\xf9\x01\x00\x00\x60\xf8\x39"
      "\xfe\x07\x00\x00\x80\xa1\xf6\xe5\x3b\x77\x5a\x25\xdb\xbd\xff\xf5\xc2\xbd"
      "\xad\xcd\x95\xfa\xbd\xab\x0b\xd5\xc6\x4a\x79\x75\x73\xbe\x3c\x5f\xdf\x58"
      "\x2f\x2f\xd5\xeb\x4b\xed\x6b\xf6\xad\x1e\xf4\x7a\xb5\x7a\x7d\xfd\xd3\xb1"
      "\xb6\x79\xbf\xd2\xac\x36\x9a\x95\xc6\xd6\xf6\xec\x6a\x7d\x73\xad\x39\xbb"
      "\xfc\xd2\x2d\xb0\x01\x00\x00\x80\x23\x74\xf6\x63\x8f\x7e\x97\x44\xc4\xce"
      "\x67\x4e\xb5\x4b\xe4\xd7\x01\x04\x78\xc9\x1f\x07\x9d\x00\x70\x98\x46\x06"
      "\x9d\x00\x30\x30\xa3\x83\x4e\x00\x18\x98\xc2\xa0\x13\x00\x06\x2e\x39\xa0"
      "\xdf\xe4\x1d\x00\x00\x78\xfb\x4d\x7c\xe4\xd5\xf3\xff\xef\xe4\x7d\x7e\x1b"
      "\x80\xe1\x66\xae\x0f\x00\x9c\x3c\xce\xff\xc3\xc9\x55\x30\x03\x10\x4e\xbc"
      "\xf7\x75\x16\xef\xf6\xea\xef\x79\xfe\xff\xd7\xfd\x46\xc8\xb2\xff\x3b\x29"
      "\x00\x00\xe0\x50\x8d\xb7\x4b\x92\x96\xf3\x73\x81\xe3\x91\xa6\xe5\x72\xc4"
      "\x7b\xed\xdb\x02\x14\x92\xc5\xe5\x5a\x75\x32\x3f\x3e\xf8\x6d\xb1\xf0\x6e"
      "\xab\x3d\xd5\x7e\x66\x72\xe0\x9c\x61\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa0\x23\xcb\x92\xc8\x00\x00\x00"
      "\x80\xa1\x16\x91\xfe\x29\x69\x5f\xcd\x3f\x62\xa2\x78\x69\x7c\xef\xef\x03"
      "\xef\x24\xff\x2c\xc6\x93\xbc\xf1\xe3\xbb\x3f\xbc\x3f\xd7\x6c\x6e\x4c\xb5"
      "\xd6\xff\xad\xd8\xee\x8f\x88\xe6\x8f\xf2\xf5\xd7\x32\xb7\x04\x00\x00\x00"
      "\x80\x63\xa0\x73\x9c\x9e\x2f\xa7\x06\x9d\x0d\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc3\xe6\xd9\xd3\x07\xf3"
      "\xbb\xe5\x28\xe3\xfe\xe5\xf3\x11\x51\xea\x16\x7f\x34\xc6\xda\xcb\xb1\x28"
      "\x44\xc4\xe9\xbf\x27\x31\xfa\xc2\xf3\x92\x88\x18\x39\x84\xf8\x3b\x0f\x23"
      "\xe2\xc3\xdd\xe2\x27\xf1\x3c\xcb\xb2\x52\x9e\x45\xb7\xf8\xa7\xde\x70\xfc"
      "\x52\xfb\xad\xe9\x1e\x3f\x8d\x88\x33\x87\x10\x1f\x4e\xb2\x47\xad\xed\xcf"
      "\xed\x6e\x9f\xbf\x34\x2e\xb4\x97\xdd\x3f\x7f\xa3\x79\x79\x5d\xbd\xb7\x7f"
      "\xe9\x7f\xb7\x7f\x23\x3d\xb6\x3f\xef\xf5\x19\xe3\xdc\xe3\x9f\x57\x7a\xc6"
      "\x7f\x18\x71\x6e\xb4\xfb\xf6\x67\x37\x7e\xd2\x23\xfe\xc5\x3e\xe3\x7f\xfd"
      "\x6b\xdb\xdb\xbd\xfa\xb2\x9f\x44\x4c\x74\xfd\xfe\x49\x5e\x8a\x55\x69\xae"
      "\xae\x57\x1a\x5b\xdb\x57\x97\x57\xe7\x96\xaa\x4b\xd5\xb5\xe9\xe9\xa9\x1b"
      "\x33\x37\x67\xae\xcf\x4c\x56\x16\x97\x6b\xd5\xfc\xdf\xae\x31\xbe\xf7\xd1"
      "\x5f\x3c\xdf\x6f\xfc\xa7\x7b\xc4\x2f\x1d\x30\xfe\x4b\x7d\x8e\xff\xdf\x8f"
      "\xef\x3f\xfd\x40\xa7\x5a\xe8\x16\xff\xf2\xc5\xae\xdf\xbf\x63\xd1\x23\x7e"
      "\x9a\x7f\xf7\x7d\x22\xaf\xb7\xfa\x27\x76\xeb\x3b\x9d\xfa\x8b\xce\xff\xec"
      "\x37\xe7\xf7\x1b\xff\x42\x8f\xf1\x1f\xf4\xff\x7f\xb9\xcf\xf1\x5f\xf9\xca"
      "\x77\xfe\xd0\xe7\x43\x01\x80\x23\xd0\xd8\xda\x5e\x99\xab\xd5\xaa\x1b\xfb"
      "\x54\xc6\xfa\x78\xcc\xdb\x58\xf9\xd5\xd8\xb1\x48\x43\xa5\x56\xdd\xc8\xbe"
      "\xdd\xf9\x7b\x3c\x2e\xf9\x74\x2a\xd9\xf1\x48\x63\x20\x95\x41\x6f\x99\x00"
      "\x00\x80\xc3\xf6\xbf\x9d\xfe\x41\x67\x02\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x27\xd7\x51\x5c\x4e\x6c\x6f\xcc\x9d\xc1\x0c"
      "\x15\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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\x5f\xff\x09\x00\x00\xff\xff\x00\x97\xdf\xbc",
      1241);
  syz_mount_image(/*fs=*/0x20000100, /*dir=*/0x20000200,
                  /*flags=MS_LAZYTIME*/ 0x2000000, /*opts=*/0x20000240,
                  /*chdir=*/1, /*size=*/0x4d9, /*img=*/0x20000b00);
}
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;
}