// https://syzkaller.appspot.com/bug?id=70b22d2cc17202bd547f048350306d6423fe925d
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <sched.h>
#include <setjmp.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/resource.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

#include <linux/capability.h>
#include <linux/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

static unsigned long long procid;

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;
}

static void setup_gadgetfs();
static void setup_binderfs();
static void setup_fusectl();
static void sandbox_common_mount_tmpfs(void)
{
  write_file("/proc/sys/fs/mount-max", "100000");
  if (mkdir("./syz-tmp", 0777))
    exit(1);
  if (mount("", "./syz-tmp", "tmpfs", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot", 0777))
    exit(1);
  if (mkdir("./syz-tmp/newroot/dev", 0700))
    exit(1);
  unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE;
  if (mount("/dev", "./syz-tmp/newroot/dev", NULL, bind_mount_flags, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/proc", 0700))
    exit(1);
  if (mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/selinux", 0700))
    exit(1);
  const char* selinux_path = "./syz-tmp/newroot/selinux";
  if (mount("/selinux", selinux_path, NULL, bind_mount_flags, NULL)) {
    if (errno != ENOENT)
      exit(1);
    if (mount("/sys/fs/selinux", selinux_path, NULL, bind_mount_flags, NULL) &&
        errno != ENOENT)
      exit(1);
  }
  if (mkdir("./syz-tmp/newroot/sys", 0700))
    exit(1);
  if (mount("/sys", "./syz-tmp/newroot/sys", 0, bind_mount_flags, NULL))
    exit(1);
  if (mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/proc/sys/fs/binfmt_misc",
            "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, bind_mount_flags,
            NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/newroot/syz-inputs", 0700))
    exit(1);
  if (mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL,
            bind_mount_flags | MS_RDONLY, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/pivot", 0777))
    exit(1);
  if (syscall(SYS_pivot_root, "./syz-tmp", "./syz-tmp/pivot")) {
    if (chdir("./syz-tmp"))
      exit(1);
  } else {
    if (chdir("/"))
      exit(1);
    if (umount2("./pivot", MNT_DETACH))
      exit(1);
  }
  if (chroot("./newroot"))
    exit(1);
  if (chdir("/"))
    exit(1);
  setup_gadgetfs();
  setup_binderfs();
  setup_fusectl();
}

static void setup_gadgetfs()
{
  if (mkdir("/dev/gadgetfs", 0777)) {
  }
  if (mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL)) {
  }
}

static void setup_fusectl()
{
  if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) {
  }
}

static void setup_binderfs()
{
  if (mkdir("/dev/binderfs", 0777)) {
  }
  if (mount("binder", "/dev/binderfs", "binder", 0, NULL)) {
  }
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  if (getppid() == 1)
    exit(1);
  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = (200 << 20);
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 32 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 136 << 20;
  setrlimit(RLIMIT_FSIZE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_STACK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 128 << 20;
  setrlimit(RLIMIT_CORE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 256;
  setrlimit(RLIMIT_NOFILE, &rlim);
  if (unshare(CLONE_NEWNS)) {
  }
  if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(0x02000000)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
  typedef struct {
    const char* name;
    const char* value;
  } sysctl_t;
  static const sysctl_t sysctls[] = {
      {"/proc/sys/kernel/shmmax", "16777216"},
      {"/proc/sys/kernel/shmall", "536870912"},
      {"/proc/sys/kernel/shmmni", "1024"},
      {"/proc/sys/kernel/msgmax", "8192"},
      {"/proc/sys/kernel/msgmni", "1024"},
      {"/proc/sys/kernel/msgmnb", "1024"},
      {"/proc/sys/kernel/sem", "1024 1048576 500 1024"},
  };
  unsigned i;
  for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++)
    write_file(sysctls[i].name, sysctls[i].value);
}

static int wait_for_loop(int pid)
{
  if (pid < 0)
    exit(1);
  int status = 0;
  while (waitpid(-1, &status, __WALL) != pid) {
  }
  return WEXITSTATUS(status);
}

static void drop_caps(void)
{
  struct __user_cap_header_struct cap_hdr = {};
  struct __user_cap_data_struct cap_data[2] = {};
  cap_hdr.version = _LINUX_CAPABILITY_VERSION_3;
  cap_hdr.pid = getpid();
  if (syscall(SYS_capget, &cap_hdr, &cap_data))
    exit(1);
  const int drop = (1 << CAP_SYS_PTRACE) | (1 << CAP_SYS_NICE);
  cap_data[0].effective &= ~drop;
  cap_data[0].permitted &= ~drop;
  cap_data[0].inheritable &= ~drop;
  if (syscall(SYS_capset, &cap_hdr, &cap_data))
    exit(1);
}

static int do_sandbox_none(void)
{
  if (unshare(CLONE_NEWPID)) {
  }
  int pid = fork();
  if (pid != 0)
    return wait_for_loop(pid);
  sandbox_common();
  drop_caps();
  if (unshare(CLONE_NEWNET)) {
  }
  write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535");
  sandbox_common_mount_tmpfs();
  loop();
  exit(1);
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void loop(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  syz_mount_image$udf arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {75 64 66 00} (length 0x4)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 02 00} (length 0x3)
  //    }
  //    flags: mount_flags = 0x0 (8 bytes)
  //    opts: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //      }
  //    }
  //    chdir: int8 = 0x1 (1 bytes)
  //    size: len = 0xc79 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0xc79)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x200000000080, "udf\000", 4);
  memcpy((void*)0x200000000c80, ".\002\000", 3);
  memcpy(
      (void*)0x2000000011c0,
      "\x78\x9c\xec\xdd\x5d\x68\x5c\xe9\x79\x07\xf0\xe7\xd5\x91\x6c\xc9\xdb\x34"
      "\xb3\x9b\x8d\xf3\xe1\x40\x87\x6e\x20\x5b\x6f\x76\x91\x2c\xef\x5a\xc5\x1b"
      "\x90\x63\x45\x64\xc1\x78\xcd\xca\xca\xc5\x42\xc1\x63\x4b\x76\x87\xd5\x97"
      "\x25\xb9\x78\x43\x09\x2e\x24\x94\x90\xb6\xb8\xe4\x22\x97\x35\x6c\x42\x7b"
      "\x57\x43\xa1\x85\xa5\x01\xf7\x6a\x1b\x42\x40\xf4\xaa\xf4\xa2\xb8\xed\xc6"
      "\x6c\xef\x26\x21\x69\x4b\x2f\x56\xe5\xcc\xbc\x23\x8d\xb4\xfa\xaa\x6d\x59"
      "\xb2\xf7\xf7\x33\xf6\xff\xcc\x99\xe7\xcc\xbc\x67\x56\xcf\xe8\xcc\xec\xbc"
      "\x73\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\x88\xf8\xea"
      "\xd7\x4e\xf5\x0f\xa4\x2d\x0a\x7a\x1e\xe1\x60\x00\x80\x47\xe2\xec\xd8\x1b"
      "\xfd\x83\x5b\xfd\xfe\x07\x00\x9e\x38\xe7\xb7\x7b\xfd\x0f\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x11\x29\x8a\xf8\x76\xa4\x78\xe7\x7b\x8d\x74\xa1\x79\xb9\xa5\xf7\x4c"
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      "\xb7\x77\xe0\xd8\xe0\xf1\x97\x5f\x39\x31\xd4\xce\xad\xb7\x7f\xd8\x3e\x17"
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      "\x0e\x6e\xbc\xbe\x6f\x77\xef\x76\x9d\x4d\x8e\x4d\x0e\x38\x36\x61\x1f\xe8"
      "\x8d\x22\x2e\x36\x8f\xf8\x1b\xe9\xfe\xdf\xec\x02\x00\x00\x00\x00\x00\x00"
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      "\x72\x46\x57\xbe\xff\x9c\xd5\x9c\xfd\x39\x87\x73\x9e\xcb\x79\x21\xe7\x5c"
      "\xce\x1b\x39\x6f\xe6\xbc\x95\xf3\x76\xce\x3b\x39\x97\x72\xde\xcd\xd9\xc8"
      "\x19\xe6\x3d\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\xf0\x90\xf5\x45\x11\xa3\x91\xe2\xd6\x3b\x7f\xd0\x3c\xaf\x74\x34\xcf\x4b"
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      "\x88\x78\x37\x76\x76\x4e\xde\x9e\x7c\xae\xf1\xd4\x55\xfe\x79\xf8\xfb\x05"
      "\x6c\xaf\x37\x8a\xf8\x56\x3e\xff\xdf\x1f\xed\xf5\x60\x00\x00\x00\x00\x00"
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      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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      "\xd3\xda\x5c\xd1\x9c\xdb\xff\x9b\xcd\xb9\xfd\xad\xe5\x4f\x9e\x1c\x7a\xed"
      "\xd8\x73\x9b\xad\xdf\x8d\xf9\xff\xe5\x98\x52\x2a\xe2\xc3\x48\xf1\xf4\x5f"
      "\x7c\xb6\x79\x3e\xfd\xf6\xfc\xff\xfe\x75\xb5\x65\xdd\x0f\x23\xc5\xcf\xbe"
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      "\xac\xbd\x17\x29\x46\xcf\x6e\x5c\xfb\xe9\xd5\xda\xc1\xb2\xb6\x2f\x52\x7c"
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      "\xab\x1d\xbf\xb6\xff\x3f\xdf\xbd\x36\xdb\xc7\x05\x7b\xd5\xff\x4f\x77\xac"
      "\xab\xe4\x71\x0d\xfe\xff\x1f\x0e\xf8\x58\x59\x78\xfb\x9b\x6f\xd5\xa6\xa6"
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      "\xca\xa7\xe2\xdd\xbb\x8b\xdf\xda\xfb\x1d\xb4\xb0\xbf\x16\x36\x78\xb2\xf8"
      "\xcb\x5f\x2d\x2f\xef\xc1\x73\x14\xb0\x3b\xca\xe3\xff\xff\x8a\x14\x5f\xb9"
      "\x5a\xa4\xf6\xeb\xd8\x7c\xfc\xff\x1b\xad\x4b\xab\xaf\xff\xff\xfb\x5b\xab"
      "\xc7\xff\x27\xd7\xe5\x8a\x3d\x3a\xfe\x7f\xa6\x63\xdd\xc9\xfc\xaa\xa5\xa7"
      "\x3b\xa2\x77\x71\x7a\xae\xe7\x33\x11\xbd\x0b\x6f\x7f\xf3\xc5\xfa\x74\xed"
      "\xca\xe4\x95\xc9\x99\xc1\xc1\xa1\x13\xbf\x7b\x7c\xe0\xd8\x89\x81\x9e\x03"
      "\xed\x17\xf7\xab\x4b\x3b\x7e\xec\xe0\x71\x57\xf6\xff\x5b\x91\xe2\x47\x7f"
      "\xfd\x4f\x2b\xef\x63\xaf\xbe\xfe\x8f\x4d\xdf\xff\x3b\xb4\x2e\x57\xec\x51"
      "\xff\x7f\xaa\x73\x9f\xd6\xbc\xae\xd9\xf1\x43\x01\x1f\x3b\x65\xff\xff\x55"
      "\xa4\xf8\x97\x5b\x1f\xac\xfc\xff\xa6\xb5\xfd\xbf\xf6\xfd\xbf\xf6\xfb\x7c"
      "\xcf\x3f\xb7\x36\xfb\xda\x45\x7b\xd4\xff\xcf\x76\xac\xab\xe6\x7f\x86\x3a"
      "\xd6\x3d\x5f\x44\x9c\xda\xe9\x7d\x01\x00\x00\x00\x00\x00\x00\x00\xc0\x63"
      "\xe2\x50\x2a\xe2\xc7\x91\xe2\x6f\x1b\xff\xb8\x72\xce\xfb\xb5\x9f\xff\x89"
      "\x2f\xb6\x6b\x3b\x3f\xff\xb7\x99\x8d\xcf\xff\xbf\xf9\xf2\x6e\xcc\xff\x07"
      "\x00\xb6\x56\xfe\xfe\x1f\x8b\x14\x3f\x3d\xf4\xe5\xd4\xfe\x0e\x99\x9d\x7c"
      "\xfe\x7f\x62\x5d\xae\xd8\xa3\xcf\xff\x1e\xee\x58\x37\xb1\xf5\xbc\xe6\x87"
      "\xb6\xb0\xe3\x07\x19\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\xee\x53\x8a\x22\x0e\x46\x8a\x77\xbe\xd7\x48\x77\x8b\xf2\x72\x4b\xef"
      "\x99\xfa\xcc\xb5\xeb\xe3\x23\xa3\x1b\x6f\xf6\xee\x6c\x44\x74\x45\xd1\xac"
      "\x2f\xff\xf6\x0e\x1c\x1b\x3c\xfe\xf2\x2b\x27\x86\xda\xb9\xf5\xf6\x0f\xdb"
      "\xe7\xe2\xf5\xb1\xf3\xa7\xaa\xa7\x67\xa7\xe7\xe6\x27\x17\x16\x26\x27\xaa"
      "\xe3\x33\xf5\x4b\xb3\x13\x93\x3b\xbe\x85\x07\xdd\x7e\xbd\xa3\xcd\x07\xa0"
      "\x3a\xfd\xd6\xb5\x89\xcb\x97\x17\xaa\xc7\x5e\x1a\x5c\x73\xf5\xf5\xca\xbd"
      "\x83\x4f\x1d\xae\x9c\x1c\x3a\x32\xf8\x66\x59\x3b\x7c\xed\x7a\x75\x7c\x64"
      "\x74\x74\xac\xa3\xa6\xbb\x67\xfd\x8d\xf6\xdd\xf7\x70\xd2\x7d\x6f\xc9\x93"
      "\xec\x40\x14\xf1\xd3\x48\xf1\xde\x8b\x1f\xa4\x7f\x2b\xca\x9e\x7e\xf0\x5e"
      "\xd8\xe6\xb9\x63\xb7\xf5\x45\x77\xd9\x7f\xcd\x9d\x18\x1f\x19\x6d\xee\xc8"
      "\x54\xbd\x36\xb3\x58\x5e\x99\xba\x72\x55\x77\x44\xa5\x63\xa3\xe1\x76\x8f"
      "\xe4\xbe\xdd\xbe\x17\xf7\xc8\x70\xc4\x8d\xf2\xb9\xb7\x1c\xf0\xd1\x72\xf7"
      "\xc6\xe6\x6a\xf3\xb5\x8b\x53\x93\xd5\x73\xb5\xf9\xc5\xfa\x62\x7d\x76\x26"
      "\x75\xb5\x46\x9b\x7e\xf2\xab\xa8\x44\x57\x0c\xa5\x88\xb9\x88\x68\x14\x7b"
      "\x3d\x78\xf6\x9b\x9e\x28\xe2\xef\x22\xc5\xbd\x5f\x36\xd2\xbf\x17\x11\x45"
      "\xbb\x0f\x5e\x38\x3b\xf6\x46\xff\xe0\xf6\x37\xd0\xfd\x08\x06\xb9\xc9\xdd"
      "\x56\x8a\x88\xa5\x78\x0c\x7a\x16\xf6\xa9\x83\x51\xc4\xb3\x91\xe2\xfb\x17"
      "\xfa\xe3\x3f\x8a\x56\x5f\x35\xdb\xe6\xfd\x88\x2f\x95\xf9\x6a\xc4\xd5\x32"
      "\xef\xa4\xb8\x99\x2f\xa7\xf2\x09\x62\x28\xe2\x17\x7e\x9f\xc0\x63\xad\x3b"
      "\x8a\x38\x17\x29\x66\x53\x23\xbd\x5f\xe4\xde\x6f\x1e\x57\x9e\xf9\x46\xf5"
      "\xb5\x99\xcb\xb3\x1d\xb5\xed\xe3\xca\xc7\xfe\xf5\xc1\xa3\xe4\xd8\x84\x7d"
      "\xac\x37\x8a\xf8\x79\xf3\x88\xbf\x91\x7e\xee\xf7\x39\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\xec\x73\x45\x7c\x25\x52\xdc\x9e\x7e\x3e\x35\xe7\x87"
      "\xae\xcc\x29\xad\xcf\x5c\xa9\x9e\xaf\x5d\x9c\x6a\x7d\xac\xbf\xfd\xd9\xff"
      "\x6a\xde\x6a\x79\x79\x79\xb9\xf2\xdb\x7f\xd3\x5c\xa8\xa6\xd6\xe5\xfe\x9c"
      "\xc3\x39\xcf\xe5\xbc\x90\x73\x2e\xe7\x8d\x9c\x37\x73\xde\xca\x79\x3b\xe7"
      "\x9d\x9c\x4b\x39\xef\xe6\x6c\xe4\x8c\xae\x7c\xff\x39\xab\x39\xfb\x73\x0e"
      "\xe7\x3c\x97\xf3\x42\xce\xb9\x9c\x37\x72\xde\xcc\x79\x2b\xe7\xed\x9c\x77"
      "\x72\x2e\xe5\xbc\x9b\xb3\x91\x33\x7c\x4e\x1a\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x80\x5d\xd2\x15\x45\x7c\x27\x52\xfc\xe0\xd7\x8d"
      "\xb4\x5c\xb4\xce\x2f\x7b\x21\x5a\x79\xd7\x3c\x57\x78\xa2\xfd\x5f\x00\x00"
      "\x00\xff\xff\x53\xa5\x46\xc7",
      3193);
  syz_mount_image(/*fs=*/0x200000000080, /*dir=*/0x200000000c80, /*flags=*/0,
                  /*opts=*/0x2000000001c0, /*chdir=*/1, /*size=*/0xc79,
                  /*img=*/0x2000000011c0);
  //  open arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    flags: open_flags = 0x143142 (8 bytes)
  //    mode: open_mode = 0x0 (8 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000002000, "./bus\000", 6);
  syscall(__NR_open, /*file=*/0x200000002000ul,
          /*flags=O_SYNC|O_NOCTTY|O_NOATIME|O_CREAT|FASYNC|0x2*/ 0x143142ul,
          /*mode=*/0ul);
  //  mount arguments: [
  //    src: ptr[in, blockdev_filename] {
  //      union blockdev_filename {
  //        loop: loop_filename {
  //          prefix: buffer: {2f 64 65 76 2f 6c 6f 6f 70} (length 0x9)
  //          id: proc = 0x0 (1 bytes)
  //          z: const = 0x0 (1 bytes)
  //        }
  //      }
  //    }
  //    dst: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    type: nil
  //    flags: mount_flags = 0x1000 (8 bytes)
  //    data: nil
  //  ]
  memcpy((void*)0x200000000380, "/dev/loop", 9);
  *(uint8_t*)0x200000000389 = 0x30;
  *(uint8_t*)0x20000000038a = 0;
  memcpy((void*)0x200000000140, "./bus\000", 6);
  syscall(__NR_mount, /*src=*/0x200000000380ul, /*dst=*/0x200000000140ul,
          /*type=*/0ul, /*flags=MS_BIND*/ 0x1000ul, /*data=*/0ul);
  //  creat arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    mode: open_mode = 0x0 (8 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000040, "./bus\000", 6);
  res = syscall(__NR_creat, /*file=*/0x200000000040ul, /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  //  writev arguments: [
  //    fd: fd (resource)
  //    vec: ptr[in, array[iovec[in, array[int8]]]] {
  //      array[iovec[in, array[int8]]] {
  //        iovec[in, array[int8]] {
  //          addr: ptr[in, buffer] {
  //            buffer: {06} (length 0x1)
  //          }
  //          len: len = 0x1 (8 bytes)
  //        }
  //      }
  //    }
  //    vlen: len = 0x1 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000140 = 0x200000000280;
  memset((void*)0x200000000280, 6, 1);
  *(uint64_t*)0x200000000148 = 1;
  syscall(__NR_writev, /*fd=*/r[0], /*vec=*/0x200000000140ul, /*vlen=*/1ul);
  //  open arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    flags: open_flags = 0x0 (8 bytes)
  //    mode: open_mode = 0x0 (8 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000480, "./bus\000", 6);
  res = syscall(__NR_open, /*file=*/0x200000000480ul, /*flags=*/0ul,
                /*mode=*/0ul);
  if (res != -1)
    r[1] = res;
  //  sendfile arguments: [
  //    fdout: fd (resource)
  //    fdin: fd (resource)
  //    off: nil
  //    count: intptr = 0x80001d00c0d0 (8 bytes)
  //  ]
  syscall(__NR_sendfile, /*fdout=*/r[0], /*fdin=*/r[1], /*off=*/0ul,
          /*count=*/0x80001d00c0d0ul);
}
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;
  do_sandbox_none();
  return 0;
}