// https://syzkaller.appspot.com/bug?id=b3d4ed3e41b3085ce97f4504f4183e3f99115fb2
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

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

#include <linux/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 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:
  while (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW) == 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, MNT_DETACH | UMOUNT_NOFOLLOW) == 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, MNT_DETACH | UMOUNT_NOFOLLOW))
        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, MNT_DETACH | UMOUNT_NOFOLLOW))
          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);
  memcpy((void*)0x200002c0, "errors=remount-ro", 17);
  *(uint8_t*)0x200002d1 = 0x2c;
  memcpy((void*)0x200002d2, "sysvgroups", 10);
  *(uint8_t*)0x200002dc = 0x2c;
  memcpy((void*)0x200002dd, "nojournal_checksum", 18);
  *(uint8_t*)0x200002ef = 0x2c;
  memcpy((void*)0x200002f0, "auto_da_alloc", 13);
  *(uint8_t*)0x200002fd = 0x3d;
  sprintf((char*)0x200002fe, "0x%016llx", (long long)7);
  *(uint8_t*)0x20000310 = 0x2c;
  memcpy((void*)0x20000311, "nobarrier", 9);
  *(uint8_t*)0x2000031a = 0x2c;
  memcpy((void*)0x2000031b, "resgid", 6);
  *(uint8_t*)0x20000321 = 0x3d;
  sprintf((char*)0x20000322, "0x%016llx", (long long)0);
  *(uint8_t*)0x20000334 = 0x2c;
  memcpy((void*)0x20000335, "dioread_nolock", 14);
  *(uint8_t*)0x20000343 = 0x2c;
  memcpy((void*)0x20000344, "auto_da_alloc", 13);
  *(uint8_t*)0x20000351 = 0x2c;
  memcpy((void*)0x20000352, "usrquota", 8);
  *(uint8_t*)0x2000035a = 0x2c;
  *(uint8_t*)0x2000035b = 0;
  memcpy(
      (void*)0x20000ec0,
      "\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\xb6\xc1\x9e\xf6\xb4\x97\x41\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\x97\x28\xbe\x8e\xfd\xf9\xc0\xc9\x3d\xe7\x5e\x49\xdf\xef\x89\xd1"
      "\xd5\x39\xf7\x1e\xa4\x00\xf6\xad\x53\x11\x71\x35\x22\x06\x22\xe2\x5c\x44"
      "\x0c\x67\xfb\xd3\xac\x5c\x6b\x36\x36\xda\x8f\x7b\xf4\xf0\xee\x74\xb3\x24"
      "\xd1\x68\xdc\xf8\x28\x89\x24\xdb\xd7\x79\xad\x24\xdb\x1e\x69\x3f\x25\x0e"
      "\x46\xc4\x1f\xae\x45\xfc\x39\xf9\x66\xdc\xda\xda\xfa\xc2\x54\xa5\x52\x5e"
      "\xc9\xda\xa5\xfa\xe2\x72\xa9\xb6\xb6\x7e\x7e\x7e\x71\x6a\xae\x3c\x57\x5e"
      "\x9a\x98\x18\xbf\x34\x79\x79\xf2\xe2\xe4\x58\x5f\xfa\x39\x12\x11\x57\x7e"
      "\xf3\xde\x3f\xff\xf6\xbf\xdf\x5e\x79\xed\xe7\xb7\xdf\xbe\xf9\xc1\xd9\xbf"
      "\x34\xd3\x1a\xca\xf2\x7e\xb2\x1f\xfd\xd4\xee\x7a\xa1\xf5\x7f\xd1\x31\x18"
      "\x11\x2b\x2f\x22\x58\x0e\x06\xb2\x6d\x21\xe7\x3c\x00\x00\xd8\x9e\xe6\x18"
      "\xff\x7b\x11\xf1\x93\xd6\xf8\x7f\x38\x06\x5a\xa3\x53\x00\x00\x00\x60\x2f"
      "\x69\xfc\x6a\x28\x3e\x4f\x22\x1a\x00\x00\x00\xc0\x9e\x95\xb6\xd6\xc0\x26"
      "\x69\x31\x5b\x0b\x30\x14\x69\x5a\x2c\xb6\xd7\xf0\xfe\x20\x0e\xa7\x95\x6a"
      "\xad\xfe\xb3\xd9\xea\xea\xd2\x4c\x7b\xad\xec\x48\x14\xd2\xd9\xf9\x4a\x79"
      "\x2c\x5b\x2b\x3c\x12\x85\xa4\xd9\x1e\xcf\xd6\xd8\x76\xda\x17\x36\xb5\x27"
      "\x22\xe2\x58\x44\xfc\x63\xf8\x50\xab\x5d\x9c\xae\x56\x66\xf2\xbe\xf8\x01"
      "\x00\x00\x00\xfb\xc4\x91\x4d\xf3\xff\x4f\x87\xdb\xf3\x7f\x00\x00\x00\x60"
      "\x8f\x19\xc9\x3b\x01\x00\x00\x00\xe0\x85\x33\xff\x07\x00\x00\x80\xbd\xcf"
      "\xfc\x1f\x00\x00\x00\xf6\xb4\xdf\x5d\xbf\xde\x2c\x8d\xce\xef\x5f\xcf\xdc"
      "\x5a\x5b\x5d\xa8\xde\x3a\x3f\x53\xae\x2d\x14\x17\x57\xa7\x8b\xd3\xd5\x95"
      "\xe5\xe2\x5c\xb5\x3a\xd7\xfa\xce\xbe\xc5\xad\x5e\xaf\x52\xad\x2e\xff\x22"
      "\x96\x56\xef\x94\xea\xe5\x5a\xbd\x54\x5b\x5b\xbf\xb9\x58\x5d\x5d\xaa\xdf"
      "\x9c\x7f\xea\x27\xb0\x01\x00\x00\x80\x1d\x74\xec\xc7\xf7\xdf\x4a\x22\x62"
      "\xe3\x97\x87\x5a\xa5\xe9\x40\xde\x49\x01\xbb\xcf\xbb\x79\x27\x00\xf4\xd3"
      "\x40\xde\x09\x00\xb9\x19\xcc\x3b\x01\x20\x37\x85\xbc\x13\x00\x72\x97\x6c"
      "\x71\xbc\xe7\xe2\x9d\xd7\xfb\x9f\x0b\x00\x00\xf0\x62\x8c\xfe\xb0\xf7\xfd"
      "\x7f\xd7\x06\x60\x6f\x4b\xf3\x4e\x00\x00\xd8\x71\xee\xff\xc3\xfe\x55\xb0"
      "\x02\x10\xf6\xbd\xef\x6e\x71\xfc\xf9\xef\xff\x37\x1a\xdf\x2a\x21\x00\x00"
      "\xa0\xef\x86\x5a\x25\x49\x8b\xd9\xbd\xc0\xa1\x48\xd3\x62\x31\xe2\x68\xeb"
      "\x67\x01\x0a\xc9\xec\x7c\xa5\x3c\x96\xcd\x0f\xde\x1c\x2e\x7c\xa7\xd9\x1e"
      "\x6f\x3d\x33\xd9\x72\xcd\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\xd0\xd6\x68\x24\xd1\x00\x00\x00\x00\xf6"
      "\xb4\x88\xf4\xfd\xa4\xf5\x6d\xfe\x11\xa3\xc3\x67\x86\x36\x5f\x1f\x38\x90"
      "\x7c\x36\xdc\xda\x46\xc4\xed\xff\xdc\xf8\xd7\x9d\xa9\x7a\x7d\x65\xbc\xb9"
      "\xff\xe3\xc7\xfb\xeb\xff\xce\xf6\x5f\xc8\xe3\x0a\x06\x00\x00\x00\xb0\x59"
      "\x67\x9e\xde\x99\xc7\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x40\x3f\x3d\x7a\x78\x77\xba\x53\x76\x32\xee\x87"
      "\xbf\x8e\x88\x91\x6e\xf1\x07\xe3\x60\x6b\x7b\x30\x0a\x11\x71\xf8\x93\x24"
      "\x06\x9f\x78\x5e\x12\x11\x03\x7d\x88\xbf\x71\x2f\x22\x8e\x77\x8b\x9f\x34"
      "\xd3\x8a\x91\x2c\x8b\x6e\xf1\x0f\xe5\x18\x3f\x8d\x88\x23\x7d\x88\x0f\xfb"
      "\xd9\xfd\xe6\xf9\xe7\x6a\xb7\xf7\x5f\x1a\xa7\x5a\xdb\xee\xef\xbf\xc1\xac"
      "\x3c\xaf\xde\xe7\xbf\xf4\xf1\xf9\x6f\xa0\xc7\xf9\xe7\xe8\x36\x63\x9c\x78"
      "\xf0\x4a\xa9\x67\xfc\x7b\x11\x27\x06\xbb\x9f\x7f\x3a\xf1\x93\x1e\xf1\x4f"
      "\x6f\x33\xfe\x9f\xfe\xb8\xbe\xde\xeb\x58\xe3\xbf\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\xb7"
      "\x6b\x8c\xbf\xff\xe8\xd5\x2f\x9f\xd5\xff\xc3\x3d\xe2\x8f\x6c\xd1\xff\x33"
      "\xdb\xec\xff\x17\x0f\xee\x3c\xfc\x7e\xbb\x5a\xe8\x16\xff\xec\xe9\xee\x9f"
      "\xbf\xc7\x7b\xc4\x4f\xb3\xcf\xbe\x9f\x66\xf5\xe6\xf1\xd1\x4e\x7d\xa3\x5d"
      "\x7f\xd2\xc9\xff\xbf\x71\xf2\x59\xfd\x9f\xe9\xd1\xff\xad\xfe\xfe\x67\xb7"
      "\xd9\xff\x73\xbf\xff\xeb\x3b\xdb\x7c\x28\x00\xb0\x03\x6a\x6b\xeb\x0b\x53"
      "\x95\x4a\x79\xe5\x25\xab\x34\xc7\x1f\xbb\x20\x0d\x95\x5d\x59\x69\x8e\x4f"
      "\x77\x41\x1a\x2f\x75\x25\xef\x33\x13\x00\x00\xd0\x6f\x5f\x0f\xfa\xf3\xce"
      "\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf6\xaf"
      "\x9d\xf8\x3a\xb1\xcd\x31\x37\xf2\xe9\x2a\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc0\x33\x7d\x15"
      "\x00\x00\xff\xff\x91\xf3\xd1\x9b",
      1214);
  syz_mount_image(/*fs=*/0x20000040, /*dir=*/0x20000500,
                  /*flags=MS_REC|MS_NODIRATIME|MS_NOATIME|0x100*/ 0x4d00,
                  /*opts=*/0x200002c0, /*chdir=*/0x12, /*size=*/0x4c5,
                  /*img=*/0x20000ec0);
  memcpy((void*)0x20000040, "ext4\000", 5);
  memcpy((void*)0x20000500, "./file1\000", 8);
  memcpy((void*)0x200002c0, "errors=remount-ro", 17);
  *(uint8_t*)0x200002d1 = 0x2c;
  memcpy((void*)0x200002d2, "sysvgroups", 10);
  *(uint8_t*)0x200002dc = 0x2c;
  memcpy((void*)0x200002dd, "nojournal_checksum", 18);
  *(uint8_t*)0x200002ef = 0x2c;
  memcpy((void*)0x200002f0, "auto_da_alloc", 13);
  *(uint8_t*)0x200002fd = 0x3d;
  sprintf((char*)0x200002fe, "0x%016llx", (long long)7);
  *(uint8_t*)0x20000310 = 0x2c;
  memcpy((void*)0x20000311, "nobarrier", 9);
  *(uint8_t*)0x2000031a = 0x2c;
  memcpy((void*)0x2000031b, "resgid", 6);
  *(uint8_t*)0x20000321 = 0x3d;
  sprintf((char*)0x20000322, "0x%016llx", (long long)0);
  *(uint8_t*)0x20000334 = 0x2c;
  memcpy((void*)0x20000335, "dioread_nolock", 14);
  *(uint8_t*)0x20000343 = 0x2c;
  memcpy((void*)0x20000344, "auto_da_alloc", 13);
  *(uint8_t*)0x20000351 = 0x2c;
  memcpy((void*)0x20000352, "usrquota", 8);
  *(uint8_t*)0x2000035a = 0x2c;
  *(uint8_t*)0x2000035b = 0;
  memcpy(
      (void*)0x20000ec0,
      "\x78\x9c\xec\xdd\xdf\x6b\x5c\x59\x1d\x00\xf0\xef\xbd\xc9\xd4\xfe\x48\x4d"
      "\xaa\x3e\xd4\x82\xb5\xd8\x4a\x5a\xb4\x33\x49\x63\xdb\xe0\x43\xad\x20\xf6"
      "\xa9\xa0\xd6\xf7\x1a\x93\x49\x08\x99\x64\x42\x66\xd2\x36\xa1\x48\x8a\x7f"
      "\x80\x20\xa2\x82\x4f\x3e\xf9\x22\xf8\x07\x08\xd2\x3f\x41\x84\x82\xfb\xbe"
      "\xec\x2e\xbb\x2c\xbb\xed\xee\xc3\x3e\xec\xee\x2c\x33\x73\xa7\x9b\x66\x67"
      "\x9a\x94\x4e\x72\xdb\xe4\xf3\x81\x93\x7b\xce\x9d\x1f\xdf\xef\x49\x98\x3b"
      "\xe7\xdc\x7b\x32\x13\xc0\x81\x75\x26\x22\xae\x47\xc4\x40\x44\x5c\x88\x88"
      "\xe1\x6c\x7f\x9a\x95\x1b\xcd\xc6\x46\xfb\x7e\x4f\x1e\xdf\x9f\x6e\x96\x24"
      "\x1a\x8d\x5b\x1f\x24\x91\x64\xfb\x3a\xcf\x95\x64\xdb\x63\xed\x87\xc4\xe1"
      "\x88\xf8\xd5\x8d\x88\xdf\x26\x5f\x8d\x5b\x5b\x5b\x5f\x98\xaa\x54\xca\x2b"
      "\x59\xbb\x54\x5f\x5c\x2e\xd5\xd6\xd6\x2f\xce\x2f\x4e\xcd\x95\xe7\xca\x4b"
      "\x13\x13\xe3\x57\x26\xaf\x4e\x5e\x9e\x1c\xeb\x4b\x3f\x47\x22\xe2\xda\xcf"
      "\xde\xf9\xf3\x1f\xfe\xf1\xf3\x6b\xff\xf9\xe1\xdd\x37\x6f\xbf\x77\xfe\x77"
      "\xcd\xb4\x86\xb2\xbc\x37\xf7\xa3\x9f\xda\x5d\x2f\xb4\x7e\x17\x1d\x83\x11"
      "\xb1\xb2\x1b\xc1\x72\x30\x90\x6d\x0b\x39\xe7\x01\x00\xc0\xce\x34\xc7\xf8"
      "\xdf\x88\x88\xef\xb5\xc6\xff\xc3\x31\xd0\x1a\x9d\x02\x00\x00\x00\xfb\x49"
      "\xe3\x27\x43\xf1\x69\x12\xd1\x00\x00\x00\x00\xf6\xad\xb4\xb5\x06\x36\x49"
      "\x8b\xd9\xba\xd4\xa1\x48\xd3\x62\xb1\xbd\x86\xf7\x5b\x71\x34\xad\x54\x6b"
      "\xf5\x1f\xcc\x56\x57\x97\x66\xda\x6b\x65\x47\xa2\x90\xce\xce\x57\xca\x63"
      "\xd9\x5a\xe1\x91\x28\x24\xcd\xf6\x78\xb6\xc6\xb6\xd3\xbe\xb4\xa5\x3d\x11"
      "\x11\x27\x22\xe2\x4f\xc3\x47\x5a\xed\xe2\x74\xb5\x32\x93\xf7\xc9\x0f\x00"
      "\x00\x00\x38\x20\x8e\x6d\x9a\xff\xa7\x11\xf1\xf1\x70\x7b\xfe\x0f\x00\x00"
      "\x00\xec\x33\x23\x79\x27\x00\x00\x00\x00\xec\x3a\xf3\x7f\x00\x00\x00\xd8"
      "\xff\xcc\xff\x01\x00\x00\x60\x5f\xfb\xc5\xcd\x9b\xcd\xd2\xe8\x7c\xff\xf5"
      "\xcc\x9d\xb5\xd5\x85\xea\x9d\x8b\x33\xe5\xda\x42\x71\x71\x75\xba\x38\x5d"
      "\x5d\x59\x2e\xce\x55\xab\x73\xad\xcf\xec\x5b\xdc\xee\xf9\x2a\xd5\xea\xf2"
      "\x8f\x62\x69\xf5\x5e\xa9\x5e\xae\xd5\x4b\xb5\xb5\xf5\xdb\x8b\xd5\xd5\xa5"
      "\xfa\xed\xf9\x67\xbe\x02\x1b\x00\x00\x00\xd8\x43\x27\xbe\xfb\xf0\x8d\x24"
      "\x22\x36\x7e\x7c\xa4\x55\x9a\x0e\xe5\x9d\x14\xb0\x27\x92\x17\xb9\xf3\xdb"
      "\xbb\x97\x07\xb0\xf7\x06\xf2\x4e\x00\xc8\xcd\x60\xde\x09\x00\xb9\x29\xe4"
      "\x9d\x00\x90\xbb\xed\xce\x03\xf4\x5c\xbc\xf3\xdf\xfe\xe7\x02\x00\x00\xec"
      "\x8e\xd1\x6f\xf7\xbe\xfe\xef\xdc\x00\xec\x6f\x69\xde\x09\x00\x00\x7b\xce"
      "\xf5\x7f\x38\xb8\x0a\x56\x00\xc2\x81\xf7\xf5\x6d\x6e\x7f\xf9\xeb\xff\x8d"
      "\xc6\x0b\x25\x04\x00\x00\xf4\xdd\x50\xab\x24\x69\x31\xbb\x16\x38\x14\x69"
      "\x5a\x2c\x46\x1c\x6f\x7d\x2d\x40\x21\x99\x9d\xaf\x94\xc7\xb2\xf9\xc1\xff"
      "\x87\x0b\x5f\x6b\xb6\xc7\x5b\x8f\x4c\x5e\xec\x7f\x87\x01\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe0\x00\x6b\x34"
      "\x92\x68\x00\x00\x00\x00\xfb\x5a\x44\xfa\x6e\xd2\xfa\x34\xff\x88\xd1\xe1"
      "\x73\x43\x5b\xcf\x0f\x1c\x4a\x3e\x19\x6e\x6d\x23\xe2\xee\xdf\x6e\xfd\xe5"
      "\xde\x54\xbd\xbe\x32\xde\xdc\xff\xe1\xd3\xfd\xf5\xbf\x66\xfb\x2f\xe5\x71"
      "\x06\x03\x00\x00\x00\xd8\xaa\x33\x4f\xef\xcc\xe3\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\xa0\x9f\x9e\x3c\xbe"
      "\x3f\xdd\x29\x7b\x19\xf7\xfd\x9f\x46\xc4\x48\xb7\xf8\x83\x71\xb8\xb5\x3d"
      "\x1c\x85\x88\x38\xfa\x51\x12\x83\x9b\x1e\x97\x44\xc4\x40\x1f\xe2\x6f\x3c"
      "\x88\x88\x93\xdd\xe2\x27\xcd\xb4\x62\x24\xcb\xa2\x5b\xfc\x23\x39\xc6\x4f"
      "\x23\xe2\x58\x1f\xe2\xc3\x41\xf6\xb0\x79\xfc\xb9\xde\xed\xf5\x97\xc6\x99"
      "\xd6\xb6\xfb\xeb\x6f\x30\x2b\x2f\xab\xf7\xf1\x2f\x7d\x7a\xfc\x1b\xe8\x71"
      "\xfc\x39\xbe\xc3\x18\xa7\x1e\xfd\xab\xd4\x33\xfe\x83\x88\x53\x83\xdd\x8f"
      "\x3f\x9d\xf8\x49\x8f\xf8\x67\x77\x18\xff\x37\xbf\x5e\x5f\xef\x75\x5b\xe3"
      "\xef\x11\xa3\x5d\xdf\x7f\x92\x67\x62\x95\xea\x8b\xcb\xa5\xda\xda\xfa\xc5"
      "\xf9\xc5\xa9\xb9\xf2\x5c\x79\x69\x62\x62\xfc\xca\xe4\xd5\xc9\xcb\x93\x63"
      "\xa5\xd9\xf9\x4a\x39\xfb\xd9\x35\xc6\x1f\xbf\xf3\xef\xcf\x9f\xd7\xff\xa3"
      "\x3d\xe2\x8f\x6c\xd3\xff\x73\x3b\xec\xff\x67\x8f\xee\x3d\xfe\x66\xbb\x5a"
      "\xe8\x16\xff\xfc\xd9\xee\xef\xbf\x27\x7b\xc4\x4f\xb3\xf7\xbe\xef\x67\xf5"
      "\xe6\xed\xa3\x9d\xfa\x46\xbb\xbe\xd9\xe9\x7f\xfe\xef\xf4\xf3\xfa\x3f\xd3"
      "\xa3\xff\xdb\xfd\xfd\xcf\xef\xb0\xff\x17\x7e\xf9\xfb\xb7\x76\x78\x57\x00"
      "\x60\x0f\xd4\xd6\xd6\x17\xa6\x2a\x95\xf2\xca\x6b\x56\x69\x8e\x3f\x5e\x81"
      "\x34\x54\x5e\xc9\x4a\x73\x7c\xfa\x0a\xa4\xf1\x5a\x57\xf2\x3e\x32\x01\x00"
      "\x00\xfd\xf6\xe5\xa0\x3f\xef\x4c\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\xe0\xe0\xda\x8b\x8f\x13\xdb\x1a\x73\x23\x9f\xae\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\x3c\xd7\x17\x01\x00\x00\xff\xff\x9e\x80\xd1\x9e",
      1222);
  syz_mount_image(
      /*fs=*/0x20000040, /*dir=*/0x20000500,
      /*flags=MS_REC|MS_RDONLY|MS_NOSUID|MS_NODIRATIME|0x544*/ 0x4d47,
      /*opts=*/0x200002c0, /*chdir=*/0x12, /*size=*/0x4c5, /*img=*/0x20000ec0);
}
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;
}