// https://syzkaller.appspot.com/bug?id=7f0a5bdbdd9e24a6780456f16719826d6c92b45d
// 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
#ifndef __NR_move_mount
#define __NR_move_mount 429
#endif
#ifndef __NR_open_tree
#define __NR_open_tree 428
#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");
  }
  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[1] = {0xffffffffffffffff};

void loop(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  memcpy((void*)0x400000000000, "ext4\000", 5);
  memcpy((void*)0x400000000500, "./file1\000", 8);
  memcpy((void*)0x400000000680, "journal_dev", 11);
  *(uint8_t*)0x40000000068b = 0x3d;
  sprintf((char*)0x40000000068c, "0x%016llx", (long long)5);
  *(uint8_t*)0x40000000069e = 0x2c;
  memcpy((void*)0x40000000069f, "noblock_validity", 16);
  *(uint8_t*)0x4000000006af = 0x2c;
  memcpy((void*)0x4000000006b0, "nombcache", 9);
  *(uint8_t*)0x4000000006b9 = 0x2c;
  memcpy((void*)0x4000000006ba, "norecovery", 10);
  *(uint8_t*)0x4000000006c4 = 0x2c;
  memcpy((void*)0x4000000006c5, "barrier", 7);
  *(uint8_t*)0x4000000006cc = 0x3d;
  sprintf((char*)0x4000000006cd, "0x%016llx", (long long)0xc);
  *(uint8_t*)0x4000000006df = 0x2c;
  memcpy((void*)0x4000000006e0, "resgid", 6);
  *(uint8_t*)0x4000000006e6 = 0x3d;
  sprintf((char*)0x4000000006e7, "0x%016llx", (long long)0xee01);
  *(uint8_t*)0x4000000006f9 = 0x2c;
  memcpy((void*)0x4000000006fa, "nodiscard", 9);
  *(uint8_t*)0x400000000703 = 0x2c;
  memcpy((void*)0x400000000704, "noauto_da_alloc", 15);
  *(uint8_t*)0x400000000713 = 0x2c;
  memcpy((void*)0x400000000714, "resgid", 6);
  *(uint8_t*)0x40000000071a = 0x3d;
  sprintf((char*)0x40000000071b, "0x%016llx", (long long)0);
  *(uint8_t*)0x40000000072d = 0x32;
  *(uint8_t*)0x40000000072e = 0;
  memcpy(
      (void*)0x400000000a40,
      "\x78\x9c\xec\xdd\xdd\x6b\x5b\xe7\x19\x00\xf0\xe7\x1c\x5b\x59\x3e\x9c\xd9"
      "\x61\xbb\xc8\x02\xcb\xc2\x92\x61\x87\x2d\x92\x1d\x2f\x89\x19\x2c\xdb\x60"
      "\x6c\x57\x81\x6d\xd9\xc5\xee\x32\xcf\x96\x8d\xb1\x6c\x19\x4b\x4e\x62\x13"
      "\x36\x87\xfd\x01\x83\x11\xb6\xc1\xae\x7a\xd5\x9b\x42\xff\x80\x42\xc9\x5d"
      "\x6f\x4b\x4b\xa0\xbd\x2f\x6d\x69\x29\x6d\xd2\x5e\xf4\xa2\x8d\x8a\xbe\x52"
      "\xc7\x91\xfc\x41\x64\x2b\x58\xbf\x1f\x1c\xeb\x3d\x1f\xf2\xf3\xbc\x12\x7a"
      "\x75\xde\xf7\xbc\xe8\x04\xd0\xb3\xce\x44\xc4\xc5\x88\x78\x5c\xa9\x54\xce"
      "\x47\xc4\x60\x63\x7b\xda\x58\xee\x1f\x8b\x88\xf5\xfa\x71\x8f\x1e\xde\x99"
      "\xaa\x2e\x49\x54\x2a\xd7\x3f\x4d\x22\x69\x6c\xab\x1e\x3f\xb2\xe1\x7f\x36"
      "\x9e\x52\xf3\xa7\xdf\x47\xfc\x2d\x79\x36\x6e\x69\x75\x6d\x7e\xb2\x50\xc8"
      "\x2f\x37\xd6\x73\xe5\x85\xa5\x5c\x69\x75\xed\xc2\xdc\xc2\xe4\x6c\x7e\x36"
      "\xbf\x38\x3e\x3e\x76\x79\xe2\xca\xc4\xa5\x89\xd1\x8e\xd4\x73\x20\x22\xae"
      "\xfe\xf6\xc3\xff\xfc\xeb\xe5\xdf\x5d\x7d\xfd\x67\xb7\xde\xbb\xf1\xf1\xc8"
      "\xdf\xab\x69\xfd\xb2\xb1\xbf\x59\x8f\x4e\xab\x57\x3d\x13\x87\x37\x6c\xeb"
      "\x8f\x88\xe5\xbd\x08\xd6\x05\x7d\x8d\xfa\x64\xba\x9d\x08\x00\x00\x3b\xd2"
      "\x3c\xcf\xff\x71\x44\x9c\x8f\xc1\xe8\xab\x9d\xcd\x01\x00\x00\x00\x07\x49"
      "\xe5\x57\x03\xf1\x55\x12\x51\x01\x00\x00\x00\x0e\xac\xb4\x36\x37\x36\x49"
      "\xb3\x8d\x79\x00\x03\x91\xa6\xd9\x6c\x7d\x0e\xef\xf7\xe3\x68\x5a\x28\x96"
      "\xca\x3f\x9d\x29\xae\x2c\x4e\xd7\xe7\xd0\x0e\x45\x26\x9d\x99\x2b\xe4\x47"
      "\x1b\x73\x85\x87\x22\x93\x54\xd7\xc7\x6a\xe5\x6f\xd7\x2f\x6e\x5a\x1f\x8f"
      "\x88\x13\x11\x71\x6f\xf0\x48\x6d\x3d\x3b\x55\x2c\x4c\x77\x7b\xf0\x03\x00"
      "\x00\x00\x7a\xc4\xb1\x4d\xfd\xff\x2f\x06\xeb\xfd\x7f\x00\x00\x00\xe0\x80"
      "\x19\xea\x76\x02\x00\x00\x00\xc0\x9e\xd3\xff\x07\x00\x00\x80\x83\xaf\x45"
      "\xff\xff\x2f\xdd\xc8\x03\x00\x00\x00\xd8\x13\x7f\xb8\x76\xad\xba\x54\x9a"
      "\xf7\xbf\x9e\xbe\xb9\xba\x32\x5f\xbc\x79\x61\x3a\x5f\x9a\xcf\x2e\xac\x4c"
      "\x65\xa7\x8a\xcb\x4b\xd9\xd9\x62\x71\xb6\xf6\x9b\x7d\x0b\xdb\xfd\xbf\x42"
      "\xb1\xb8\xf4\xf3\x58\x5c\xb9\x9d\x2b\xe7\x4b\xe5\x5c\x69\x75\xed\xc6\x42"
      "\x71\x65\xb1\x7c\x63\xee\xa9\x5b\x60\x03\x00\x00\x00\xfb\xe8\xc4\x8f\xee"
      "\xbf\x9b\x44\xc4\xfa\x2f\x8e\xd4\x96\xaa\x43\xdd\x4e\x0a\xd8\x17\xfd\xbb"
      "\x39\xf8\x83\xbd\xcb\x03\xd8\x7f\x7d\xdd\x4e\x00\xe8\x9a\x5d\x7d\xff\x03"
      "\x07\x4a\xa6\xdb\x09\x00\x5d\x97\x6c\xb3\xbf\xed\xe4\x9d\x37\x3b\x9f\x0b"
      "\x00\x00\xb0\x37\x86\x7f\xd0\xfa\xfa\x7f\xb2\xed\xd8\xc0\x7a\xba\x4f\x29"
      "\x02\x7b\xc4\xf8\x1f\xf4\x2e\xd7\xff\xa1\x77\xb9\xfe\x0f\xbd\x2b\x13\x7d"
      "\xa1\x23\x0f\xbd\x6d\xef\xaf\xff\x57\x2a\xbb\x4a\x08\x00\x00\xe8\xb8\x81"
      "\xda\x92\xa4\xd9\x88\xda\x38\xc0\x40\xa4\x69\x36\x1b\x71\xbc\x76\x5b\x80"
      "\x4c\x32\x33\x57\xc8\x8f\x46\xc4\x77\x23\xe2\x9d\xc1\xcc\x77\xaa\xeb\x63"
      "\xb5\x67\x26\xdb\xf6\x19\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x80\xba\x4a\x25\x89\x0a\x00\x00\x00\x70\xa0"
      "\x45\xa4\x1f\x25\x8d\xfb\x7f\x0d\x0f\x9e\x1b\xd8\x3c\x3e\x70\x28\xf9\x72"
      "\xb0\xf6\x18\x11\xb7\xfe\x7f\xfd\xbf\xb7\x27\xcb\xe5\xe5\xb1\xea\xf6\xcf"
      "\x9e\x6c\x2f\xff\xaf\xb1\xfd\x62\x37\x46\x30\x00\x00\x00\x80\xcd\x9a\xfd"
      "\xf4\x66\x3f\x1e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x3a\xe9\xd1\xc3\x3b\x53\xcd\x65\x3f\xe3\x7e\xf2\x9b"
      "\x88\x18\x6a\x15\xbf\x3f\x0e\xd7\x1e\x0f\x47\x26\x22\x8e\x7e\x9e\x44\xff"
      "\x86\xe7\x25\x11\xd1\xd7\x81\xf8\xeb\x77\x23\xe2\x64\xab\xf8\x49\x35\xad"
      "\x18\x6a\x64\xd1\x2a\xfe\x91\x2e\xc6\x4f\x23\xe2\x58\x07\xe2\x43\x2f\xbb"
      "\x5f\x6d\x7f\x7e\xdd\xea\xf3\x97\xc6\x99\xda\x63\xeb\xcf\xdf\xe5\x5a\x0b"
      "\xf5\xfc\xda\xb7\x7f\xe9\x93\xf6\xaf\xaf\x4d\xfb\x73\x7c\x87\x31\x4e\x3d"
      "\x78\x35\xd7\x36\xfe\xdd\x88\x53\xfd\xad\xdb\x9f\x66\xfc\xa4\x4d\xfc\xb3"
      "\x3b\x8c\xff\xd7\x3f\xaf\xad\xb5\xdb\x57\x79\x29\x62\xb8\xe5\xf7\x4f\xf2"
      "\x54\xac\x5c\x79\x61\x29\x57\x5a\x5d\xbb\x30\xb7\x30\x39\x9b\x9f\xcd\x2f"
      "\x8e\x8f\x8f\x5d\x9e\xb8\x32\x71\x69\x62\x34\x37\x33\x57\xc8\x37\xfe\xb6"
      "\x88\x70\x28\xfe\xfd\xc3\xd7\x1e\x6f\x55\xff\xa3\x71\xaf\x6d\xfb\xbb\x55"
      "\xfd\xcf\xed\xb0\xfe\x5f\x3f\xb8\xfd\xf0\x7b\xf5\x62\xa6\x55\xfc\x91\xb3"
      "\xad\xdf\xff\x93\x6d\xe2\xa7\x8d\xef\xbe\x9f\x34\xca\xd5\xfd\xc3\xcd\xf2"
      "\x7a\xbd\xbc\xd1\xe9\x57\xde\x3a\x1d\xf1\xf6\x1b\xed\xea\x3f\xdd\xe6\xf5"
      "\xdf\xee\xfd\x1f\xd9\x61\xfd\xcf\xff\xf1\x9f\xef\xef\xf0\x50\x00\x60\x1f"
      "\x94\x56\xd7\xe6\x27\x0b\x85\xfc\x72\x4f\x17\x9e\xeb\xd5\xa8\x9e\x16\xbd"
      "\x10\xb5\x50\xd8\x6d\xe1\x1f\x2f\x46\x1a\x2f\x64\xa1\xbb\xed\x12\x00\x00"
      "\xd0\x79\xcf\xf6\x81\x9f\xd6\x89\x6b\xec\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\xc0\xd6\xf6\xf3\xd7\xf5\x9a\xd6\xbb\x53\x55"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x80\x2d\x7d\x13\x00\x00\xff\xff\x94\xec\xd7\xa3",
      1240);
  syz_mount_image(
      /*fs=*/0x400000000000, /*dir=*/0x400000000500,
      /*flags=MS_POSIXACL|MS_REC|MS_SYNCHRONOUS|MS_SILENT|MS_NOSUID|0x904*/
      0x1c916, /*opts=*/0x400000000680, /*chdir=*/0x9b, /*size=*/0x4d8,
      /*img=*/0x400000000a40);
  memcpy((void*)0x400000000080, "./file0\000", 8);
  memcpy((void*)0x400000000040, "./file0\000", 8);
  memcpy((void*)0x400000000180, "incremental-fs\000", 15);
  syscall(__NR_mount, /*src=*/0x400000000080ul, /*dst=*/0x400000000040ul,
          /*type=*/0x400000000180ul, /*flags=*/0ul, /*opts=*/0ul);
  memset((void*)0x400000000640, 0, 1);
  res = syscall(
      __NR_open_tree, /*dfd=*/0xffffff9c, /*filename=*/0x400000000640ul,
      /*flags=OPEN_TREE_CLOEXEC|OPEN_TREE_CLONE|AT_SYMLINK_NOFOLLOW|AT_RECURSIVE|AT_NO_AUTOMOUNT|AT_EMPTY_PATH*/
      0x89901ul);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x4000000003c0, "./file1\000", 8);
  syscall(__NR_move_mount, /*from_dfd=*/r[0],
          /*from_pathname=*/0x4000000003c0ul, /*to_dfd=*/0xffffff9c,
          /*to_pathname=*/0ul,
          /*flags=MOVE_MOUNT_T_EMPTY_PATH|MOVE_MOUNT_T_AUTOMOUNTS*/ 0x60ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x3ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x400000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x400001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  const char* reason;
  (void)reason;
  do_sandbox_none();
  return 0;
}