// https://syzkaller.appspot.com/bug?id=b8b40867f7ce2ee5b0715df2afc24ddee96a00fd
// 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_fsconfig
#define __NR_fsconfig 431
#endif
#ifndef __NR_fspick
#define __NR_fspick 433
#endif
#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$hfs arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {68 66 73 00} (length 0x4)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x3000080 (8 bytes)
  //    opts: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //      }
  //    }
  //    chdir: int8 = 0x1 (1 bytes)
  //    size: len = 0x2e0 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x2e0)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x200000000080, "hfs\000", 4);
  memcpy((void*)0x200000000100, "./file0\000", 8);
  memcpy(
      (void*)0x200000000880,
      "\x78\x9c\xec\xdd\xcd\x6a\x13\x5d\x1c\xc7\xf1\xdf\x99\x24\x6d\xfa\x34\xf4"
      "\x99\xbe\x3c\x3c\xe0\xb2\x5a\xd0\x8d\xd4\xba\x11\x37\x29\x92\x8b\x10\x17"
      "\xa2\x36\x11\x8a\xa1\xa2\xad\xa0\x6e\xac\xe2\x4a\x44\xf7\xee\xbd\x05\x6f"
      "\x41\x70\xa3\x78\x03\xba\x72\xe5\x05\x44\x10\x46\xce\x99\xc9\x6b\xe7\x25"
      "\x8d\x49\xa6\xa1\xdf\x0f\x18\x26\x33\xf3\x9f\xf3\x3f\x99\xb7\xf3\x1f\xb0"
      "\x23\x00\xa7\xd6\xb5\xda\xb7\xf7\x97\x7f\xd8\x7f\x46\x2a\xa8\x20\xbd\xba"
      "\x2a\x79\x92\xca\x52\x51\xd2\x7f\xfa\xbf\xfc\x68\xef\x60\xf7\xa0\xd9\xa8"
      "\xa7\x6c\xa7\x15\x38\x36\xca\x28\x8c\x34\x47\x56\xda\xd9\x6b\xc4\xc5\x96"
      "\x15\x45\x44\x7c\xfb\xad\xa8\x4a\xef\x3c\x4c\x46\x10\x04\xdb\xdf\x25\xed"
      "\xe7\x9d\x08\x72\xe5\xce\xfe\x18\x9e\x34\x1f\x9d\x9d\x6e\x79\x79\xea\x99"
      "\xa5\x7b\x3e\x62\xdc\xe1\x98\xf3\x98\x35\xa6\xa5\x96\x1e\x6b\x29\xef\x3c"
      "\x00\x00\xf9\x8a\xee\xff\x5e\x74\x9f\xaf\x44\xe3\x77\xcf\x93\x36\xa2\xdb"
      "\xfe\x89\xbc\xff\x8f\xaa\x95\x77\x02\x13\x17\xa4\x2e\xed\xb9\xff\xbb\x2a"
      "\x2b\x30\x76\xff\xfe\xeb\x16\x75\xeb\x3d\x57\xc2\xd9\xe5\x5e\xbb\x4a\x1c"
      "\xa6\xe5\xd2\xc0\xf7\x39\x85\x47\x56\xdf\x00\xd3\x64\x55\x95\x2e\x17\x6f"
      "\xe1\xee\x6e\xb3\x71\x71\xe7\x7e\xb3\xee\xe9\x85\xaa\x91\x9e\xd5\xd6\xdc"
      "\x67\x3d\x3c\x74\xdb\x32\xb2\x5d\x8f\xa9\x4d\x53\x0c\xd1\x77\x13\x3f\xa2"
      "\x5c\x74\x7d\x28\xd9\x3e\x6c\x25\xe4\xbf\x3a\x62\x8b\x23\x33\x9f\xcc\x17"
      "\x73\xd3\xf8\x7a\xa7\x7a\x67\xfc\x57\x0c\x8c\xdd\x4d\x6e\x4f\xf9\x03\x7b"
      "\x2a\xcc\x7f\x33\x79\x8b\xae\x97\xbe\x5d\x4b\xd1\x65\xa3\x5a\xad\x7a\x7d"
      "\xab\x2c\xbb\x46\xce\x44\x2d\x44\x32\x7a\x59\x8e\xaf\x48\xd4\x3e\xa2\x96"
      "\xd5\xff\x80\xc0\xcf\xca\xd3\x45\xad\x0c\x44\x85\xbd\xbb\x94\x11\xb5\x1a"
      "\x46\x6d\x2f\xf4\x45\x6d\xb5\xbf\x25\x44\xad\xf5\xb5\x65\x7b\xd3\x39\x9a"
      "\x93\xdb\x9b\x34\xf3\xc6\x5c\x37\xeb\xfa\xa9\x0f\xaa\xf5\x8c\xff\x3d\x9b"
      "\xdf\x86\x52\xcf\xcc\xee\x59\x63\x36\xc2\x5b\x81\xfb\xc5\xc3\xfe\xcc\xc5"
      "\x37\x57\x74\xdb\xf4\x8f\xdc\x39\x0e\x75\xa3\xd2\x3f\xa7\xf3\x2b\xce\x27"
      "\xa5\xfe\x2b\xfd\x9a\x76\x3a\xa5\xfc\x26\xcf\x52\xc2\x5e\xeb\x8e\xae\x68"
      "\x69\xff\xc9\xd3\x7b\x85\x66\xb3\xf1\xd0\x4e\xdc\x8e\x99\x78\x50\xe9\xcc"
      "\x29\xbd\x94\x62\xd7\x39\xe6\x44\xfb\x24\xfa\x9b\xed\x78\xea\xce\xd1\x61"
      "\x77\xd1\xbc\xc2\x07\x91\x47\xa2\x4a\x63\x68\xf4\xb8\x13\x17\xc6\xba\x41"
      "\x7b\xfd\xc8\x5c\xd9\x9e\x65\x53\xe9\xe0\x58\x8e\x84\x59\x9d\xa8\x7d\x9e"
      "\xc2\x81\x64\x2f\x92\x39\xf6\x74\x9c\xd7\x28\x9c\x54\xdd\x9d\x9e\xb9\xea"
      "\xc7\xa9\x24\x84\x69\x73\xe3\xae\xb0\xfe\xeb\xa9\x57\x36\xdd\x60\xcf\x7e"
      "\xf8\x29\xe3\xf4\xcc\x01\x59\xb4\xc5\xc0\x8e\xb1\x3b\x15\x50\xb9\x2f\x7e"
      "\xc5\x4d\xfd\x13\x5b\xc1\x25\x3d\x6e\x58\x4c\xae\xe0\x86\xad\xb9\xce\x9e"
      "\x97\xce\x75\x66\xfd\x0e\x32\xaa\x11\x3f\xca\x73\x36\x04\x69\x43\x3f\xcb"
      "\xd4\xf4\x55\xb7\x78\xfe\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x30\x6b\xa6\xf1\xdf\x09\xf2\xee\x23\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xb3\xae\xf3\xfe\x5f\xb5\xdf"
      "\xff\xab\xe1\xde\xff\x3b\xf8\x97\xbf\x0b\xe1\x1b\x5e\xc6\xf2\xfe\xdf\xb7"
      "\x7b\xe2\xfd\xbf\xc0\xe4\xfd\x09\x00\x00\xff\xff\x4c\xde\x85\xcc",
      736);
  syz_mount_image(/*fs=*/0x200000000080, /*dir=*/0x200000000100,
                  /*flags=MS_LAZYTIME|MS_STRICTATIME|MS_DIRSYNC*/ 0x3000080,
                  /*opts=*/0x200000000280, /*chdir=*/1, /*size=*/0x2e0,
                  /*img=*/0x200000000880);
  //  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);
  syscall(__NR_creat, /*file=*/0x200000000040ul, /*mode=*/0ul);
  //  mkdir arguments: [
  //    path: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    mode: open_mode = 0x0 (8 bytes)
  //  ]
  memcpy((void*)0x200000000000, "./file0\000", 8);
  syscall(__NR_mkdir, /*path=*/0x200000000000ul, /*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*)0x200000000440, "/dev/loop", 9);
  *(uint8_t*)0x200000000449 = 0x30;
  *(uint8_t*)0x20000000044a = 0;
  memcpy((void*)0x200000000200, "./bus\000", 6);
  syscall(__NR_mount, /*src=*/0x200000000440ul, /*dst=*/0x200000000200ul,
          /*type=*/0ul, /*flags=MS_BIND*/ 0x1000ul, /*data=*/0ul);
  //  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*)0x200000000000, "./bus\000", 6);
  res = syscall(__NR_open, /*file=*/0x200000000000ul, /*flags=*/0ul,
                /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  //  ioctl$LOOP_SET_STATUS64 arguments: [
  //    fd: fd_loop (resource)
  //    cmd: const = 0x4c04 (4 bytes)
  //    arg: ptr[in, loop_info64] {
  //      loop_info64 {
  //        lo_device: const = 0x0 (8 bytes)
  //        lo_inode: const = 0x0 (8 bytes)
  //        lo_rdevice: const = 0x0 (8 bytes)
  //        lo_offset: int64 = 0x7ffffffffffffffb (8 bytes)
  //        lo_sizelimit: int64 = 0x3 (8 bytes)
  //        lo_number: const = 0x0 (4 bytes)
  //        lo_enc_type: lo_encrypt_type = 0x0 (4 bytes)
  //        lo_enc_key_size: int32 = 0x17 (4 bytes)
  //        lo_flags: lo_flags = 0x0 (4 bytes)
  //        lo_file_name: buffer: {ef 35 af 41 3b b9 01 52 7f e4 d0 ce 5d 29 c3
  //        ee 5e 5c 36 76 34 5a 41 49 9d b7 aa c6 3a 01 00 00 00 00 00 00 00 4f
  //        aa 2a e2 c0 84 a0 ea 00 00 00 00 00 00 77 00 00 0c 00 00 20 00 00 00
  //        00 00 00} (length 0x40) lo_crypt_name: buffer: {03 6c 47 c6 78 08 20
  //        04 00 00 00 00 00 00 00 33 52 63 bd bc ef 54 9b a1 97 fc e4 7d df dd
  //        75 3a bd 95 01 00 00 2a 00 ff ff ff ff ff ff ff ff 00 00 00 00 e8 f2
  //        00 00 00 02 00 00 00 00 00 00 00} (length 0x40) lo_enc_key: buffer:
  //        {b7 32 67 36 18 1c 20 82 20 ff ff f2 ff 00 00 00 00 00 00 00 00 0e
  //        00 00 00 00 00 00 00 00 00 00} (length 0x20) lo_init: array[int64] {
  //          int64 = 0x4 (8 bytes)
  //          int64 = 0x0 (8 bytes)
  //        }
  //      }
  //    }
  //  ]
  *(uint64_t*)0x2000000000c0 = 0;
  *(uint64_t*)0x2000000000c8 = 0;
  *(uint64_t*)0x2000000000d0 = 0;
  *(uint64_t*)0x2000000000d8 = 0x7ffffffffffffffb;
  *(uint64_t*)0x2000000000e0 = 3;
  *(uint32_t*)0x2000000000e8 = 0;
  *(uint32_t*)0x2000000000ec = 0;
  *(uint32_t*)0x2000000000f0 = 0x17;
  *(uint32_t*)0x2000000000f4 = 0;
  memcpy((void*)0x2000000000f8,
         "\xef\x35\xaf\x41\x3b\xb9\x01\x52\x7f\xe4\xd0\xce\x5d\x29\xc3\xee\x5e"
         "\x5c\x36\x76\x34\x5a\x41\x49\x9d\xb7\xaa\xc6\x3a\x01\x00\x00\x00\x00"
         "\x00\x00\x00\x4f\xaa\x2a\xe2\xc0\x84\xa0\xea\x00\x00\x00\x00\x00\x00"
         "\x77\x00\x00\x0c\x00\x00\x20\x00\x00\x00\x00\x00\x00",
         64);
  memcpy((void*)0x200000000138,
         "\x03\x6c\x47\xc6\x78\x08\x20\x04\x00\x00\x00\x00\x00\x00\x00\x33\x52"
         "\x63\xbd\xbc\xef\x54\x9b\xa1\x97\xfc\xe4\x7d\xdf\xdd\x75\x3a\xbd\x95"
         "\x01\x00\x00\x2a\x00\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00"
         "\xe8\xf2\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00",
         64);
  memcpy((void*)0x200000000178,
         "\xb7\x32\x67\x36\x18\x1c\x20\x82\x20\xff\xff\xf2\xff\x00\x00\x00\x00"
         "\x00\x00\x00\x00\x0e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
         32);
  *(uint64_t*)0x200000000198 = 4;
  *(uint64_t*)0x2000000001a0 = 0;
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4c04, /*arg=*/0x2000000000c0ul);
  //  fspick arguments: [
  //    dfd: fd_dir (resource)
  //    path: ptr[in, buffer] {
  //      buffer: {2e 00} (length 0x2)
  //    }
  //    flags: fspick_flags = 0x0 (8 bytes)
  //  ]
  //  returns fd_fscontext
  memcpy((void*)0x200000000000, ".\000", 2);
  res = syscall(__NR_fspick, /*dfd=*/0xffffff9c, /*path=*/0x200000000000ul,
                /*flags=*/0ul);
  if (res != -1)
    r[1] = res;
  //  fsconfig$FSCONFIG_CMD_RECONFIGURE arguments: [
  //    fd: fd_fscontext (resource)
  //    cmd: const = 0x7 (8 bytes)
  //    key: const = 0x0 (8 bytes)
  //    value: const = 0x0 (8 bytes)
  //    aux: const = 0x0 (8 bytes)
  //  ]
  syscall(__NR_fsconfig, /*fd=*/r[1], /*cmd=*/7ul, /*key=*/0ul, /*value=*/0ul,
          /*aux=*/0ul);
  //  syz_mount_image$fuse arguments: [
  //    fs: nil
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 34 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x1018000 (8 bytes)
  //    opts: nil
  //    chdir: int8 = 0x5 (1 bytes)
  //    size: const = 0x0 (8 bytes)
  //    img: nil
  //  ]
  //  returns fd_dir
  memcpy((void*)0x200000000400, "./file4\000", 8);
  syz_mount_image(/*fs=*/0, /*dir=*/0x200000000400,
                  /*flags=MS_POSIXACL|MS_STRICTATIME|MS_SILENT*/ 0x1018000,
                  /*opts=*/0, /*chdir=*/5, /*size=*/0, /*img=*/0);
}
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;
}