// https://syzkaller.appspot.com/bug?id=41f1fbe9ecfa79a4789785c49b8ecd9d23243fad
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

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

#include <linux/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif
#ifndef __NR_pwritev2
#define __NR_pwritev2 328
#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");
  } else if (strncmp(fs, "gfs2", 4) == 0 &&
             (strstr(opts, "errors=panic") || strstr(opts, "debug"))) {
    strcat(opts, ",errors=withdraw");
  }
  res = mount(source, target, fs, flags, opts);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  res = open(target, O_RDONLY | O_DIRECTORY);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  if (change_dir) {
    res = chdir(target);
    if (res == -1) {
      err = errno;
    }
  }

error_clear_loop:
  if (need_loop_device)
    reset_loop_device(loopname);
  errno = err;
  return res;
}

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  int iter = 0;
  DIR* dp = 0;
  const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW;

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

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

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

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

static void execute_one(void);

#define WAIT_FLAGS __WALL

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

uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  syz_mount_image$ext4 arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {65 78 74 34 00} (length 0x5)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x1000040 (8 bytes)
  //    opts: ptr[in, fs_options[ext4_options]] {
  //      fs_options[ext4_options] {
  //        elems: array[fs_opt_elem[ext4_options]] {
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              barrier: buffer: {62 61 72 72 69 65 72} (length 0x7)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              nodioread_nolock: buffer: {6e 6f 64 69 6f 72 65 61 64 5f 6e 6f
  //              6c 6f 63 6b} (length 0x10)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              noquota: buffer: {6e 6f 71 75 6f 74 61} (length 0x7)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              barrier: buffer: {62 61 72 72 69 65 72} (length 0x7)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              auto_da_alloc: buffer: {61 75 74 6f 5f 64 61 5f 61 6c 6c 6f
  //              63} (length 0xd)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              nodioread_nolock: buffer: {6e 6f 64 69 6f 72 65 61 64 5f 6e 6f
  //              6c 6f 63 6b} (length 0x10)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //    chdir: int8 = 0x1 (1 bytes)
  //    size: len = 0x59c (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x59c)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x2000000000c0, "ext4\000", 5);
  memcpy((void*)0x200000000000, "./file1\000", 8);
  memcpy((void*)0x2000000002c0, "barrier", 7);
  *(uint8_t*)0x2000000002c7 = 0x2c;
  memcpy((void*)0x2000000002c8, "nodioread_nolock", 16);
  *(uint8_t*)0x2000000002d8 = 0x2c;
  memcpy((void*)0x2000000002d9, "noquota", 7);
  *(uint8_t*)0x2000000002e0 = 0x2c;
  memcpy((void*)0x2000000002e1, "barrier", 7);
  *(uint8_t*)0x2000000002e8 = 0x2c;
  memcpy((void*)0x2000000002e9, "auto_da_alloc", 13);
  *(uint8_t*)0x2000000002f6 = 0x2c;
  memcpy((void*)0x2000000002f7, "nodioread_nolock", 16);
  *(uint8_t*)0x200000000307 = 0x2c;
  *(uint8_t*)0x200000000308 = 0;
  memcpy(
      (void*)0x200000001840,
      "\x78\x9c\xec\xdd\x4f\x68\x1c\x65\x1b\x00\xf0\x67\x66\xb3\x4d\xff\xe4\xfb"
      "\xd2\x0f\xbe\x0f\x3e\xa5\x87\xa2\x42\x85\xd2\x4d\xd2\x3f\x5a\x3d\xb5\x57"
      "\xb1\x50\xe8\x41\xf0\xa2\x61\xb3\x0d\x25\x9b\x6c\xc9\x26\xda\x84\x80\xe9"
      "\xbd\x88\x3d\x88\x4a\x2f\xf5\xa6\x07\x8f\x8a\x07\x0f\xe2\xc5\xa3\x57\x2f"
      "\x8a\x67\xa1\xd8\xa0\xd0\xf4\xa0\x2b\x9b\x9d\x4d\xd3\x74\xb7\x6e\x62\x36"
      "\x5b\xb3\xbf\x1f\x4c\xf6\x7d\x67\x66\xf7\x79\xdf\x99\x7d\xde\xec\x0c\x33"
      "\x4c\x00\x7d\xeb\x68\xfd\x4f\x1a\xf1\x54\x44\x5c\x4c\x22\x86\x37\x2c\x1b"
      "\x88\x6c\xe1\xd1\xc6\x7a\xab\x2b\x4b\xc5\xfb\x2b\x4b\xc5\x24\x6a\xb5\x4b"
      "\xbf\x24\x91\x44\xc4\xbd\x95\xa5\x62\x73\xfd\x24\x7b\x3d\x14\x11\xcb\x11"
      "\xf1\xff\x88\xf8\x26\x1f\x71\x3c\x5d\xff\xc8\x7d\xcd\x42\x75\x61\x71\x6a"
      "\xbc\x5c\x2e\xcd\x66\xf5\x91\xb9\xe9\xab\x23\xd5\x85\xc5\x13\x57\xa6\xc7"
      "\x27\x4b\x93\xa5\x99\x53\x2f\xbe\x74\xe6\xec\xe9\x33\x63\x27\xc7\x36\x36"
      "\xf7\x7e\x6d\x63\x2d\xbf\xb5\xbe\xde\xf8\xf1\xe6\xbb\x37\xbe\x7b\xe5\xf6"
      "\xcd\x4f\x3f\x3b\xb2\x5c\x7c\x7f\x3c\x89\x73\x31\x94\x2d\xdb\xd8\x8f\x9d"
      "\xd4\xd8\x26\xf9\x38\xb7\x69\xfe\xe9\x6e\x04\xeb\xa1\xa4\xd7\x0d\x60\x5b"
      "\x72\x59\x9e\xd7\x53\xe9\x7f\x31\x1c\xb9\x2c\xeb\x5b\xa9\x6d\x1c\x1c\x06"
      "\x77\xa5\x79\x40\x17\xd5\x06\x23\x6a\xeb\x36\x14\x81\x3e\x90\x48\x7a\xe8"
      "\x53\xcd\xdf\x01\xf5\xe3\xdf\xe6\xb4\x9b\xbf\x3f\xee\x9c\x6f\x1c\x80\xd4"
      "\xe3\xae\xae\x2c\x15\xdf\x89\x66\xfc\x81\xc6\xb9\x89\xd8\xbf\x76\x6c\x72"
      "\xf0\xd7\xe4\xa1\x23\x93\xfa\xf1\xe6\xe1\xdd\x6c\x28\x7b\xd2\xf2\xf5\x88"
      "\x18\x1d\x18\x78\xf4\xfb\x9f\x64\xdf\xbf\xed\x1b\xdd\x89\x06\xd2\x55\x5f"
      "\x9f\x6f\xec\xa8\x47\xf7\x7f\xba\x3e\xfe\x44\x8b\xf1\x67\xa8\x79\xee\xf4"
      "\x6f\x6a\x8e\x7f\xab\xd9\xf8\xb7\xda\x22\x7e\xae\xcd\xf8\x77\xb1\xc3\x18"
      "\xbf\xbf\xfe\xd3\x47\x6d\xe3\x5f\x1f\x8c\xa7\x5b\xc6\x4f\xd6\xe3\x27\x2d"
      "\xe2\xa7\x11\xf1\x66\x87\xf1\x6f\xbd\xf6\xe5\xd9\x76\xcb\x6a\x1f\x47\x1c"
      "\x8b\xd6\xf1\x9b\x92\xc7\x9f\x1f\x1e\xb9\x7c\xa5\x5c\x1a\x6d\xfc\x6d\x19"
      "\xe3\xab\x63\x47\x5e\x6e\xdf\xff\x88\x83\x6d\xe2\x37\xce\xd9\xee\x5f\x6b"
      "\xc8\xc6\xfe\xef\xcb\xda\x94\x76\xd8\xff\x2f\xbe\xfd\xfc\x99\xe5\xc7\xc4"
      "\x7f\xfe\xd9\xc7\xef\xff\x56\xdb\xff\x40\x44\xbc\xd7\x61\xfc\xff\xdc\xfb"
      "\xe4\xd5\x76\xcb\xee\x5c\x4f\xee\xd6\x7f\x05\x6c\x75\xff\x27\x91\x8f\xdb"
      "\x1d\xc6\x7f\xe1\xdc\xd1\x1f\xb2\xa2\xb3\x86\x00\x00\x00\x00\x00\x00\x00"
      "\x00\xb0\x83\xd2\xb5\x6b\xd9\x92\xb4\xb0\x5e\x4e\xd3\x42\xa1\x71\x0f\xef"
      "\x7f\xe3\x60\x5a\xae\x54\xe7\x8e\x5f\xae\xcc\xcf\x4c\x34\xae\x79\x3b\x1c"
      "\xf9\xb4\x79\xa5\xd5\x70\xa3\x9e\xd4\xeb\x63\xd9\xf5\xb8\xcd\xfa\xc9\x4d"
      "\xf5\x53\xb9\x2c\x60\xee\xc0\x5a\xbd\x50\xac\x94\x27\x7a\xdc\x77\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x78\x52\x1c\xda\x74"
      "\xff\xff\x6f\xb9\xb5\xfb\xff\x37\x3f\xae\x1a\xd8\xab\xda\x3f\xf2\x1b\xd8"
      "\xeb\xe4\x3f\xf4\xaf\x87\xf3\x3f\xe9\x59\x3b\x80\xdd\xe7\xff\x3f\xf4\xad"
      "\x9a\xfc\x87\xfe\x25\xff\xa1\x7f\xc9\x7f\xe8\x5f\xf2\x1f\xfa\x97\xfc\x87"
      "\xfe\x25\xff\xa1\x7f\xc9\x7f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe8\x8a\x8b\x17\x2e\xd4\xa7\xda\xfd"
      "\x95\xa5\x62\xbd\x3e\x31\xb0\x30\x3f\x55\x79\xeb\xc4\x44\xa9\x3a\x55\x98"
      "\x9e\x2f\x16\x8a\x95\xd9\xab\x85\xc9\x4a\x65\xb2\x5c\x2a\x14\x2b\xd3\x7f"
      "\xf5\x79\x49\xa5\x72\x75\x34\x66\xe6\xaf\x8d\xcc\x95\xaa\x73\x23\xd5\x85"
      "\xc5\x37\xa6\x2b\xf3\x33\xcd\x67\x8a\x96\xf2\x5d\xef\x11\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfc\xf3\x0c\xad\x4d\x49\x5a"
      "\x88\xc8\x37\xea\x69\x5a\x28\x44\xfc\x2b\x22\x0e\x27\x91\x5c\xbe\x52\x2e"
      "\x8d\x46\xc4\xbf\x23\xe2\xfb\x5c\x7e\xb0\x5e\x1f\xeb\x75\xa3\x01\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x60\x8f\xa9\x2e\x2c\x4e"
      "\x8d\x97\xcb\xa5\xd9\xee\x15\x06\xb2\x50\x5d\x0c\xd1\x79\x61\x60\x2b\x2b"
      "\x47\xc4\xf2\xce\x36\xa3\xfe\x89\x5b\x7e\x57\x3e\xdb\x80\x3d\xde\x74\x7b"
      "\xa3\x90\x7b\x32\xbe\x87\x4f\x7e\xa1\x87\x83\x12\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\xf4\xa9\x07\x37\xfd\x76\xfa\x8e\x3f\xba"
      "\xdb\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe8"
      "\x4b\xe9\xcf\x49\x44\xd4\xa7\x63\xc3\xcf\x0d\x6d\x5e\xba\x2f\x59\xcd\xad"
      "\xbd\x46\xc4\xdb\xb7\x2e\x7d\x70\x6d\x7c\x6e\x6e\x76\xac\x3e\xff\xee\xfa"
      "\xfc\xb9\x0f\xb3\xf9\x27\x7b\xd1\x7e\xa0\x53\xcd\x3c\x4d\x23\xa2\x9e\xc7"
      "\x00\x00\x00\x00\x00\x00\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\x03\xd5\x85\xc5\xa9"
      "\xf1\x72\xb9\x34\xbb\xcd\xc2\x60\x07\xeb\xf4\xba\x8f\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\xdb\xf1\x67\x00\x00\x00\xff\xff\x2e\x16\xce\x51",
      1436);
  syz_mount_image(/*fs=*/0x2000000000c0, /*dir=*/0x200000000000,
                  /*flags=MS_STRICTATIME|MS_MANDLOCK*/ 0x1000040,
                  /*opts=*/0x2000000002c0, /*chdir=*/1, /*size=*/0x59c,
                  /*img=*/0x200000001840);
  //  ioctl$BTRFS_IOC_LOGICAL_INO_V2 arguments: [
  //    fd: fd (resource)
  //    cmd: const = 0xc038943b (4 bytes)
  //    arg: nil
  //  ]
  syscall(__NR_ioctl, /*fd=*/(intptr_t)-1, /*cmd=*/0xc038943b, /*arg=*/0ul);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x101042 (4 bytes)
  //    mode: open_mode = 0x15 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000040, "./file1\000", 8);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000040ul,
                /*flags=O_SYNC|O_CREAT|O_RDWR*/ 0x101042,
                /*mode=S_IXOTH|S_IROTH|S_IWGRP*/ 0x15);
  if (res != -1)
    r[0] = res;
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x105042 (4 bytes)
  //    mode: open_mode = 0x1c3 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000180, "./file1\000", 8);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000180ul,
                /*flags=O_SYNC|O_DIRECT|O_CREAT|O_RDWR*/ 0x105042,
                /*mode=S_IXOTH|S_IWOTH|S_IXUSR|S_IWUSR|S_IRUSR*/ 0x1c3);
  if (res != -1)
    r[1] = res;
  //  mmap arguments: [
  //    addr: VMA[0x600000]
  //    len: len = 0x600000 (8 bytes)
  //    prot: mmap_prot = 0x27ffff7 (8 bytes)
  //    flags: mmap_flags = 0x4012011 (8 bytes)
  //    fd: fd (resource)
  //    offset: intptr = 0x0 (8 bytes)
  //  ]
  syscall(
      __NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x600000ul,
      /*prot=PROT_GROWSUP|PROT_WRITE|PROT_READ|PROT_EXEC|0x7ffff0*/ 0x27ffff7ul,
      /*flags=MAP_UNINITIALIZED|MAP_NONBLOCK|MAP_LOCKED|MAP_FIXED|0x1*/
      0x4012011ul, /*fd=*/r[1], /*offset=*/0ul);
  //  open arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x143142 (8 bytes)
  //    mode: open_mode = 0x80 (8 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000000, "./file1\000", 8);
  res =
      syscall(__NR_open, /*file=*/0x200000000000ul,
              /*flags=O_SYNC|O_NOCTTY|O_NOATIME|O_CREAT|FASYNC|0x2*/ 0x143142ul,
              /*mode=S_IWUSR*/ 0x80ul);
  if (res != -1)
    r[2] = res;
  //  ftruncate arguments: [
  //    fd: fd (resource)
  //    len: intptr = 0x2007ffb (8 bytes)
  //  ]
  syscall(__NR_ftruncate, /*fd=*/r[2], /*len=*/0x2007ffbul);
  //  sendfile arguments: [
  //    fdout: fd (resource)
  //    fdin: fd (resource)
  //    off: nil
  //    count: intptr = 0x1000000201005 (8 bytes)
  //  ]
  syscall(__NR_sendfile, /*fdout=*/r[2], /*fdin=*/r[2], /*off=*/0ul,
          /*count=*/0x1000000201005ul);
  //  ftruncate arguments: [
  //    fd: fd (resource)
  //    len: intptr = 0x6 (8 bytes)
  //  ]
  syscall(__NR_ftruncate, /*fd=*/r[2], /*len=*/6ul);
  //  pwritev2 arguments: [
  //    fd: fd (resource)
  //    vec: nil
  //    vlen: len = 0x0 (8 bytes)
  //    off_low: int32 = 0x5405 (4 bytes)
  //    off_high: int32 = 0x0 (4 bytes)
  //    flags: rwf_flags = 0x0 (8 bytes)
  //  ]
  syscall(__NR_pwritev2, /*fd=*/(intptr_t)-1, /*vec=*/0ul, /*vlen=*/0ul,
          /*off_low=*/0x5405, /*off_high=*/0, /*flags=*/0ul);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 32 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x4142 (4 bytes)
  //    mode: open_mode = 0x0 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x2000000002c0, "./file2\000", 8);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x2000000002c0ul,
                /*flags=O_NOCTTY|O_DIRECT|O_CREAT|O_RDWR*/ 0x4142, /*mode=*/0);
  if (res != -1)
    r[3] = res;
  //  pwrite64 arguments: [
  //    fd: fd (resource)
  //    buf: ptr[in, buffer] {
  //      buffer: {61} (length 0x1)
  //    }
  //    count: len = 0x200000c1 (8 bytes)
  //    pos: intptr = 0x9000 (8 bytes)
  //  ]
  memset((void*)0x2000000000c0, 97, 1);
  syscall(__NR_pwrite64, /*fd=*/r[3], /*buf=*/0x2000000000c0ul,
          /*count=*/0x200000c1ul, /*pos=*/0x9000ul);
  //  pwrite64 arguments: [
  //    fd: fd (resource)
  //    buf: ptr[in, buffer] {
  //      buffer: {32} (length 0x1)
  //    }
  //    count: len = 0xfdef (8 bytes)
  //    pos: intptr = 0xe7c (8 bytes)
  //  ]
  memset((void*)0x200000000140, 50, 1);
  syscall(__NR_pwrite64, /*fd=*/r[0], /*buf=*/0x200000000140ul,
          /*count=*/0xfdeful, /*pos=*/0xe7cul);
  //  mkdirat arguments: [
  //    fd: fd_dir (resource)
  //    path: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    mode: open_mode = 0x0 (8 bytes)
  //  ]
  memcpy((void*)0x200000000440, "./file0\000", 8);
  syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x200000000440ul,
          /*mode=*/0ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  use_temporary_dir();
  loop();
  return 0;
}