// 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;
  const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW;

retry:
  while (umount2(dir, umount_flags) == 0) {
  }
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exit(1);
    }
    exit(1);
  }
  struct dirent* ep = 0;
  while ((ep = readdir(dp))) {
    if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
      continue;
    char filename[FILENAME_MAX];
    snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
    while (umount2(filename, umount_flags) == 0) {
    }
    struct stat st;
    if (lstat(filename, &st))
      exit(1);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      if (unlink(filename) == 0)
        break;
      if (errno == EPERM) {
        int fd = open(filename, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno != EBUSY || i > 100)
        exit(1);
      if (umount2(filename, umount_flags))
        exit(1);
    }
  }
  closedir(dp);
  for (int i = 0;; i++) {
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EPERM) {
        int fd = open(dir, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno == EBUSY) {
        if (umount2(dir, umount_flags))
          exit(1);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exit(1);
  }
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  for (int i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

static void reset_loop()
{
  char buf[64];
  snprintf(buf, sizeof(buf), "/dev/loop%llu", procid);
  int loopfd = open(buf, O_RDWR);
  if (loopfd != -1) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
}

static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  write_file("/proc/self/oom_score_adj", "1000");
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      exit(1);
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      if (chdir(cwdbuf))
        exit(1);
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

void execute_one(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  memcpy((void*)0x20000140, "ext4\000", 5);
  memcpy((void*)0x200005c0, "./file1\000", 8);
  *(uint8_t*)0x20000280 = 0;
  memcpy(
      (void*)0x200011c0,
      "\x78\x9c\xec\xdd\xcf\x6b\x1c\x55\x1c\x00\xf0\xef\xec\x26\x31\x69\xa3\x69"
      "\x45\xc4\x56\xc5\x80\x87\x16\xa4\x69\x52\x8b\x55\x4f\x6d\x3d\x58\xa1\x60"
      "\xc1\x1e\x44\x3c\x34\x34\x49\x0d\xdd\xfe\xa0\x49\xc1\xd6\x82\x29\x78\x11"
      "\x54\x44\xbc\x7a\xe8\xc5\x7f\xc0\xbb\xf4\xee\x4d\x04\xf5\xe6\x59\xa8\xa2"
      "\x15\x0f\x22\x5d\x99\xd9\x9d\x76\x4d\x77\x37\x4b\x9a\xcd\x6c\x3a\x9f\x0f"
      "\xcc\xe6\xbd\x37\xb3\x79\xef\x9b\xc9\xdb\x79\x6f\x76\x5f\x12\x40\x69\x4d"
      "\xa6\x0f\x95\x88\x5d\x11\x71\x2a\x89\x98\x68\xd9\x37\x1e\x8d\x9d\x93\xcd"
      "\xe3\x6e\xff\x71\xed\x74\xba\x25\x51\xaf\xbf\xf5\x7b\x12\x49\xb3\x2c\x3f"
      "\xfe\x4e\xf3\xeb\xf6\xf4\x21\x89\x18\x8d\x88\xef\x8f\x46\x3c\x5e\xbd\xbf"
      "\xde\xa5\x2b\x57\xcf\xce\xd6\xea\x0d\x1f\x46\xec\x5f\x3e\x77\x71\xff\xd2"
      "\x95\xab\xfb\x16\xcf\xcd\x9e\x99\x3f\x33\x7f\x7e\xe6\xc0\xcb\x07\x0f\x4d"
      "\xbf\x32\x73\x70\x66\x43\xe2\xcc\xe3\x3a\x76\xfc\xcd\x67\x3e\xfd\xe8\xbd"
      "\x97\x16\x7e\xa8\xed\x4b\xe2\x70\x9c\x1c\xfe\x60\x2e\x56\xc5\xb1\x51\x26"
      "\x63\x32\xee\x34\x43\x6c\x2d\x1f\x8a\x88\x43\x69\xa2\xcd\xcf\x65\xab\xc9"
      "\x43\x48\x0a\x6e\x07\xeb\x53\x6d\xfe\x3e\x0e\x47\xc4\x93\x31\x11\xd5\x2c"
      "\xd7\x30\x11\x8b\x9f\x14\xda\x38\xa0\xaf\xea\xd5\x88\x3a\x50\x52\x89\xfe"
      "\x0f\x25\x95\x8f\x03\xf2\xb9\x7d\x3f\xe6\xc1\x83\xec\xd6\x91\xc6\x04\xe8"
      "\xfe\xf8\x87\x1a\xf7\x46\x62\x34\x9b\x1b\x6d\xbb\x9d\xb4\xcc\x8c\x1a\xf3"
      "\xdd\x1d\x1b\x50\x7f\x5a\xc7\xbf\xd7\x76\x7f\x95\x6e\xd1\xa7\xfb\x10\xdd"
      "\xac\x5c\x8f\x88\xa7\xda\xc5\x9f\x64\x6d\xdb\x91\xdd\xc5\x49\xe3\xaf\x44"
      "\xa5\xe5\x79\x69\x7a\x3a\x22\x46\x9a\xf3\xc7\xd7\xd6\x59\x7f\xe3\x67\x1c"
      "\x97\xff\x6c\xe6\x07\x39\xfe\xd6\xf3\x9f\xc6\x7f\xb8\xf9\x35\x2d\x3f\xba"
      "\xce\xfa\x27\x57\xe5\xcb\xd6\xff\x00\x28\xc6\xcd\x23\x11\xd9\x28\x70\x25"
      "\xcd\xdd\xbb\xfe\xa5\x65\xf9\xf8\x27\xda\x8c\x7f\xc6\xdb\x5c\xbb\xd6\xa3"
      "\xe8\xeb\x5f\xe7\xf1\x5f\x7e\xbd\x1f\xcd\xee\x91\xb7\x1b\xff\x9d\x68\xff"
      "\x2d\x87\x57\x17\xfc\xf2\xf1\xb1\x2f\x3a\xd5\xdf\x3a\xfe\x4b\xb7\xb4\xfe"
      "\x7c\x2c\xb8\x19\x6e\x5d\x8f\xd8\xbd\x3a\xfe\xec\x94\x27\x77\xcf\x7f\xd2"
      "\x26\xfe\x74\xdc\x73\xaa\xc7\x3a\x5e\xff\xf1\xb7\x63\x9d\xf6\xfd\x3f\xfe"
      "\x6a\xf6\x3b\xb8\x99\xf1\xd7\x6f\x44\xec\x69\x3b\xff\xb9\xf7\x8e\x56\x9a"
      "\xea\xf2\xfe\xe4\xfe\x85\xc5\xda\xfc\x74\xe3\xb1\x6d\x1d\xdf\x7e\xf7\xee"
      "\xd7\x9d\xea\x1f\x84\xf3\xbf\xad\x43\xfc\xdd\xce\x7f\x5a\x76\xb1\xc7\x3a"
      "\xbe\x39\x71\xe3\x5c\xa7\x7d\x6b\xc7\x5f\xf9\x75\x24\x39\x99\xa5\x46\x9a"
      "\x25\xef\xcf\x2e\x2f\x5f\x9a\x89\x18\x49\x8e\x37\x0f\x69\x29\x3f\xd0\xbd"
      "\x2d\xf9\x31\xf9\xf7\x48\xe3\xdf\xfb\x7c\xfb\xfe\xdf\x2d\xfe\xb1\xfc\x25"
      "\xb3\x07\x17\xdf\x3e\x7b\x7b\xfd\xf1\x77\x75\xa7\xde\xe3\x81\x9d\xa4\xf1"
      "\xcf\xad\xf3\xfc\x7f\xde\x63\x1d\x7f\xbf\x73\xf9\xd9\x4e\xfb\xba\xc5\x3f"
      "\xf6\x20\x81\x01\x00\x00\x00\x00\x00\x40\x09\x55\xb2\xcf\x72\x24\x95\xa9"
      "\xbb\xe9\x4a\x65\x6a\xaa\xb1\x86\xf7\x89\xd8\x56\xa9\x5d\x58\x5a\x7e\x61"
      "\xe1\xc2\xe5\xf3\x73\x11\x7b\xb3\xcf\x43\x0e\x57\xf2\x77\xba\x27\x1a\xf9"
      "\x24\xcd\xcf\x34\x3f\x0f\x9b\xe7\x0f\xac\xca\xbf\x18\x11\x3b\x23\xe2\xcb"
      "\xea\x58\x96\x9f\x3a\x7d\xa1\x36\x57\x74\xf0\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x30\x20\xb6\xaf\x5a\xff\xff\x57\xb5\xb1"
      "\xfe\x1f\x28\x89\xa1\xa2\x1b\x00\x14\x46\xff\x87\xf2\xca\xfa\x7f\xa5\xe8"
      "\x56\x00\x45\x70\xfd\x87\xf2\xd2\xff\xa1\xbc\x7a\xec\xff\x6f\xf4\xbb\x1d"
      "\xc0\xe6\x73\xfd\x87\xf2\xd2\xff\xa1\xbc\x86\xbc\x04\x40\x69\xe9\xfc\x50"
      "\x5e\xfa\x3f\x00\x00\x00\x00\x3c\x94\x76\x3e\x77\xf3\xe7\x24\x22\x56\x5e"
      "\x1d\xcb\xb6\xd4\x48\x73\xdf\xf0\x9a\xcf\x76\xe3\x10\xb6\xb2\xb5\xfb\x38"
      "\xf0\xb0\xaa\x16\xdd\x00\xa0\x30\x77\x47\xf0\x96\xff\x43\xe9\xf4\x34\xfe"
      "\xff\xa7\xde\xd0\xff\xe6\x00\x05\x48\xda\x15\x66\x83\x83\x7a\xf7\xce\x7f"
      "\xb3\xed\x33\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x3e\xd8\xb3\xeb"
      "\x41\xd6\xff\x03\x5b\x99\x65\x7f\x50\x5e\x0f\xb0\xfe\xbf\xfa\xf4\x46\x36"
      "\x04\xd8\x74\xfe\x82\x17\x94\x97\x39\x3e\xf0\xd9\x1a\x13\x81\xd1\x4e\x3b"
      "\xac\xff\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x4d\x33\x9e\x6d\x49"
      "\x65\xaa\xb9\x16\x78\x3c\x2a\x95\xa9\xa9\x88\x47\x23\x62\x47\x0c\x27\x0b"
      "\x8b\xb5\xf9\xe9\x88\x78\x2c\x22\x7e\xaa\x0e\x3f\x92\xe6\x67\x8a\x6e\x34"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x3c\x64\x96"
      "\xae\x5c\x3d\x3b\x5b\xab\xcd\x5f\x2a\x73\x22\xff\x2f\xa8\x83\xd2\x9e\xd6"
      "\x44\x24\x9b\x5f\xe9\x58\x44\x0c\x42\xec\xfd\x49\x0c\xb5\x94\x24\x11\x2b"
      "\xe9\x99\x1f\x88\x86\x5d\x5a\x8a\xc1\x68\x46\x96\x28\xf8\x85\x09\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x4a\xa8\x65\xed\x31\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x94\xd6\xbd\xff\xff\xdf"
      "\xbf\x44\xd1\x31\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x5b\xd3\x7f\x01\x00\x00\xff\xff\x5c"
      "\x11\x35\xf3",
      1497);
  syz_mount_image(/*fs=*/0x20000140, /*dir=*/0x200005c0,
                  /*flags=MS_REC*/ 0x4000, /*opts=*/0x20000280, /*chdir=*/0x80,
                  /*size=*/0x5db, /*img=*/0x200011c0);
  memcpy((void*)0x200000c0, "ext4\000", 5);
  memcpy((void*)0x20000040, "./file1\000", 8);
  *(uint8_t*)0x20000000 = 0;
  memcpy(
      (void*)0x20001c40,
      "\x78\x9c\xec\xdd\x5f\x6b\x63\x69\x19\x00\xf0\xe7\x9c\x36\xdd\x76\xa6\x6b"
      "\xba\x2a\xb2\x2e\xb8\x2e\xee\x4a\x67\xd1\x49\xa6\x5b\x77\xb7\x88\xe8\x7a"
      "\xa3\x57\x0b\xea\x7a\x5f\x6b\x9b\x96\xd2\xa4\x29\x4d\xba\x4e\xcb\xe2\x74"
      "\xf0\x1b\x88\xe0\x80\x57\x5e\x88\x37\x82\x1f\x40\x18\xe6\xc2\x0f\x20\x03"
      "\x03\x7a\x23\x5e\x88\x8a\x22\x3a\xa3\x17\x82\x3a\x47\x92\x9c\x30\x9d\x34"
      "\x69\xcb\x4c\xdb\x8c\xcd\xef\x07\xa7\x79\xdf\xf3\xef\x79\xde\x13\xf2\xe6"
      "\x9c\x93\xd3\x73\x02\x18\x59\xaf\x44\xc4\x3b\x11\x31\x16\x11\xaf\x47\x44"
      "\x31\x1f\x9f\xe6\xc3\x62\xab\xb2\xdf\x99\xef\xc1\xfd\x0f\x96\x5b\x43\x12"
      "\x59\xf6\xde\xdf\x92\x48\xf2\x71\xdd\x75\xb5\xea\xe3\x11\x71\xb9\xb3\x48"
      "\x4c\x46\xc4\x37\xbe\x1a\xf1\xed\xe4\x70\xdc\xc6\xee\xde\xc6\x52\xb5\x5a"
      "\xd9\x8e\x98\x6a\x2d\x59\x6e\xd6\xb6\xca\x8d\xdd\xbd\xab\xeb\xb5\xa5\xb5"
      "\xca\x5a\x65\x73\x7e\x7e\xee\xad\x85\xb7\x17\xde\x5c\xb8\x96\xe5\x9e\xaa"
      "\x9d\x33\xdd\xc2\x4f\xbf\xf2\xc5\xdb\x9f\xfd\xce\xef\x17\xff\x72\xe5\xbb"
      "\xad\xb4\xbe\xf0\xb1\x28\x44\x4f\x3b\x4e\x53\xa7\xe9\x85\xf6\xb6\xe8\x6a"
      "\x6d\xa3\xed\xb3\x08\x36\x04\x63\x79\x7b\x0a\xc3\x4e\x04\x00\x80\x13\x69"
      "\xed\xe3\x7f\x38\x22\x3e\xd5\xde\xff\x2f\xc6\x58\x7b\x6f\xae\xc7\xd8\x30"
      "\x32\x03\x00\x00\x00\x4e\x4b\xf6\xa5\xe9\xf8\x4f\x12\x91\x01\x00\x00\x00"
      "\x17\x56\x1a\x11\xd3\x91\xa4\xa5\xfc\x5a\x80\xe9\x48\xd3\x89\xfc\xdc\xc0"
      "\x47\xe3\x52\x5a\xad\x37\x9a\x9f\x59\xad\xef\x6c\xae\xb4\xa6\x45\xcc\x44"
      "\x21\x5d\x5d\xaf\x76\x17\x6f\xd5\x93\xd5\xf5\x6a\x65\x2e\xbf\xc6\xb6\x5b"
      "\x7f\xa3\xa7\x3e\x1f\x11\x2f\x44\xc4\x0f\x8a\x53\xed\x7a\x69\xb9\x5e\x5d"
      "\x19\xf2\xb9\x0f\x00\x00\x00\x18\x15\x97\x7b\x8e\xff\xff\x59\x4c\xdb\xe5"
      "\xe3\xf5\xf9\x3f\x01\x00\x00\x00\xe0\xd9\x35\x33\xb0\x02\x00\x00\x00\x5c"
      "\x14\x0e\xf9\x01\x00\x00\xe0\xe2\xeb\x3d\xfe\xbf\x3d\xa4\x3c\x00\x00\x00"
      "\x80\x33\xf1\xb5\x77\xdf\x6d\x0d\x59\xf7\xf9\xd7\x2b\xef\xef\xee\x6c\xd4"
      "\xdf\xbf\xba\x52\x69\x6c\x94\x6a\x3b\xcb\xa5\xe5\xfa\xf6\x56\x69\xad\x5e"
      "\x5f\x6b\xdf\xb3\xaf\x76\xdc\xfa\xaa\xf5\xfa\xd6\xe7\x62\x73\xe7\x7a\xb9"
      "\x59\x69\x34\xcb\x8d\xdd\xbd\xc5\x5a\x7d\x67\xb3\xb9\xb8\xfe\xd8\x23\xb0"
      "\x01\x00\x00\x80\x73\xf4\xc2\x27\xef\xfc\x26\x89\x88\xfd\xcf\x4f\xb5\x87"
      "\xc8\xef\x03\x08\xf0\x98\x3f\x0e\x3b\x01\xe0\x34\x8d\x0d\x3b\x01\x60\x68"
      "\xdc\xc5\x1b\x46\x57\x61\xd8\x09\x00\x43\x97\x1c\x33\xdd\xc5\x3b\x00\x00"
      "\xf0\xff\x6f\xf6\xe3\x87\x7f\xff\xef\x3e\xff\xdf\xb9\x01\xb8\xd8\x5c\xeb"
      "\x03\x00\xa3\xc7\xef\xff\x30\xba\x0a\xae\x00\x84\x91\x96\x46\xc4\x87\x3a"
      "\xc5\xe7\x06\xcd\x33\xf0\xf7\xff\x5f\x9d\x34\x4a\x96\x45\xdc\x2d\x1e\x1c"
      "\xe3\xfc\x22\x00\x00\x9c\xaf\xe9\xf6\x90\xa4\xa5\xfc\x38\x60\x3a\xd2\xb4"
      "\x54\x8a\x78\x3e\x22\x9d\x89\x42\xb2\xba\x5e\xad\x5c\xcb\x8f\x0f\x7e\x5d"
      "\x2c\x3c\xd7\xaa\xcf\xb5\x97\x4c\x8e\xbd\x66\x18\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe8\xc8\xb2\x24\x32"
      "\x00\x00\x00\xe0\x42\x8b\x48\xff\x9c\xb4\xef\xe6\x1f\x31\x5b\x7c\x6d\xba"
      "\xf7\xfc\xc0\x44\xf2\xaf\x62\xfc\x29\xaf\xfc\xe8\xbd\x1f\x5e\x5f\x6a\x36"
      "\xb7\xe7\x5a\xe3\xff\xde\x7e\x96\xd7\x44\x44\x34\x6f\xe5\xe3\xdf\x18\xf8"
      "\xf8\x30\x00\x00\x00\xe0\xb4\x25\xfb\x03\x27\x75\x8e\xd3\xf3\xd7\xb9\x73"
      "\xcd\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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\x11\xf0\xe0\xfe\x07\xcb\xdd\xe1\x3c\xe3\xfe\xf5\xcb\x11\x31"
      "\xd3\x2f\xfe\x78\x4c\xb6\x5f\x27\xa3\x10\x11\x97\xfe\x91\xc4\xf8\x81\xe5"
      "\x92\x88\x18\x3b\x85\xf8\xfb\x37\x23\xe2\xc5\x7e\xf1\x93\x78\x98\x65\x37"
      "\x22\xcf\xa2\x5f\xfc\xa9\x33\x8e\x3f\xd3\xde\x34\xfd\xe3\xa7\x11\x71\xf9"
      "\x14\xe2\xc3\x28\xbb\xd3\xea\x7f\xde\xe9\xf7\xf9\x4b\xe3\x95\xf6\x6b\xff"
      "\xcf\xdf\x78\x3e\x3c\xad\xc1\xfd\x5f\x9a\x47\x7e\xb1\xdd\xcf\xf5\xeb\x7f"
      "\x9e\x3f\xb4\xb6\x5a\xdf\x18\x2f\xdd\xfb\x79\x79\x60\xfc\x9b\x11\x2f\x8d"
      "\xf7\xef\x7f\xba\xfd\x6f\x32\x20\xfe\xab\x87\xd6\xf6\xef\x2c\xcb\x0e\xc7"
      "\xf8\xd6\x37\xf7\xf6\x06\xc5\xcf\x7e\x1c\x31\xdb\xf7\xfb\x27\x79\x2c\x56"
      "\xb9\x59\xdb\x2a\x37\x76\xf7\xae\xae\xd7\x96\xd6\x2a\x6b\x95\xcd\xf9\xf9"
      "\xb9\xb7\x16\xde\x5e\x78\x73\xe1\x5a\x79\x75\xbd\x5a\xc9\xff\xf6\x8d\xf1"
      "\xfd\x4f\xfc\xe2\xe1\x51\xed\xbf\xd4\x27\xfe\xef\x7e\xdb\xe9\x7f\x8f\x6a"
      "\xff\x6b\x83\x56\xda\xe3\xbf\xf7\xae\xdf\xff\x48\xa7\x58\xe8\x17\xff\xca"
      "\xab\x7d\xbf\x7f\x27\x63\x40\xfc\x34\xff\xee\xfb\x74\x5e\x6e\x4d\x9f\xed"
      "\x96\xf7\x3b\xe5\x83\x5e\xfe\xd9\xdd\x97\x8f\x6a\xff\xca\x80\xed\x7f\xdc"
      "\xfb\x7f\xe5\x84\xed\x7f\xfd\xeb\xdf\xfb\xc3\x09\x67\x05\x00\xce\x41\x63"
      "\x77\x6f\x63\xa9\x5a\xad\x6c\x1f\x51\x98\x3c\xc1\x3c\x67\x5a\x98\x3f\x9b"
      "\x35\xff\x72\x72\xc8\xed\x7a\xa2\x42\x76\xa3\xf3\xce\x3d\x2b\xf9\x3c\x69"
      "\xa1\xb5\xb7\xfa\x68\x4c\xb7\x55\xcf\x40\x62\x07\x0a\xd9\xb9\xc5\x1a\x8b"
      "\x93\xce\x3c\x31\x70\xd2\x4f\x6e\x9d\x66\x62\x43\xed\x96\x00\x00\x80\x33"
      "\xf0\x68\xa7\x7f\xd8\x99\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\xc0\xe8\x3a\x8f\xdb\x9b\xf5\xc6\xdc\x1f\x4e\x53\x01\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x8e\xf4\xbf\x00\x00\x00\xff\xff\xd8\x63\xe6\x5f",
      1310);
  syz_mount_image(/*fs=*/0x200000c0, /*dir=*/0x20000040,
                  /*flags=MS_LAZYTIME|MS_SYNCHRONOUS|MS_STRICTATIME*/ 0x3000010,
                  /*opts=*/0x20000000, /*chdir=*/1, /*size=*/0x51e,
                  /*img=*/0x20001c40);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-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=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  use_temporary_dir();
  loop();
  return 0;
}