// https://syzkaller.appspot.com/bug?id=0c81dbee1b873defa8f716f216e7a11653e96c0a
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

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

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

#ifndef __NR_memfd_create
#define __NR_memfd_create 279
#endif
#ifndef __NR_mmap
#define __NR_mmap 222
#endif
#ifndef __NR_openat
#define __NR_openat 56
#endif
#ifndef __NR_write
#define __NR_write 64
#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;
}

#define MAX_FDS 30

//% 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)) {
  }
}

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);
}

#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 close_fds()
{
  for (int fd = 3; fd < MAX_FDS; fd++)
    close(fd);
}

static const char* setup_usb()
{
  if (chmod("/dev/raw-gadget", 0666))
    return "failed to chmod /dev/raw-gadget";
  return NULL;
}

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();
      close_fds();
      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[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  syz_mount_image$nilfs2 arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {6e 69 6c 66 73 32 00} (length 0x7)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x3200400 (8 bytes)
  //    opts: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYRES8: ANYRES8 (resource)
  //        }
  //      }
  //    }
  //    chdir: int8 = 0x3 (1 bytes)
  //    size: len = 0xa73 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0xa73)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x20000000, "nilfs2\000", 7);
  memcpy((void*)0x20000040, "./file0\000", 8);
  *(uint8_t*)0x20000140 = 0;
  memcpy(
      (void*)0x20003cc0,
      "\x78\x9c\xec\xdd\x4d\x8c\x1b\x57\x01\x00\xe0\x37\xde\xf5\x26\x9b\xa4\xc4"
      "\x29\x09\x5d\x92\xd0\x26\xfc\xb4\xe5\xa7\xbb\xcd\x66\x09\x3f\x11\x34\x55"
      "\x73\x21\x6a\x2a\x6e\x95\x2a\x2e\x51\x9a\x96\x88\x34\x20\x52\x09\x5a\x55"
      "\x22\xc9\x89\x1b\xad\xaa\x70\x85\x22\x4e\xe5\x50\x01\x42\x6a\x2f\x28\xea"
      "\x89\x4b\x25\x1a\x89\x4b\x4f\x85\x03\x07\xa2\x20\x55\xe2\x00\x85\xc4\x68"
      "\xbd\xef\x79\xc7\x2f\x76\xc7\xfb\x93\xb5\xbd\xfe\x3e\xe9\xed\xf3\x9b\x37"
      "\xf6\x7b\x33\x3b\x33\x1e\xcf\xcc\x7b\x2f\x00\x63\xab\xd6\xfa\xbb\xb0\x30"
      "\x53\x84\x70\xe5\xad\x57\x8f\xff\xe3\xfe\xbf\x4f\x2f\x4e\x79\xa4\x3d\x47"
      "\xa3\xf5\x77\xb2\x94\xaa\x87\x10\x8a\x98\x9e\xcc\x3e\xef\xfd\x89\xa5\xf8"
      "\xe6\x07\x2f\x9d\xee\x16\x17\x61\xbe\xf5\x37\xa5\xc3\x13\x37\xda\xef\xdd"
      "\x1e\x42\xb8\x18\x0e\x84\xab\xa1\x11\xf6\x5e\xb9\xf6\xca\x3b\xf3\x8f\x9f"
      "\xbc\x74\xe2\xf2\xc1\x77\x5f\x3f\x7a\xfd\xce\x2c\x3d\x00\x00\x8c\x97\x6f"
      "\x5f\x3d\xba\xb0\xe7\xaf\x7f\xde\xb7\xeb\xc3\x37\xee\x3d\x16\xb6\xb4\xa7"
      "\xa7\xf3\xf3\x46\x4c\xef\x88\xe7\xfd\xc7\xe2\x89\x7f\x3a\xff\xaf\x85\xce"
      "\x74\x51\x0a\x65\x53\xd9\x7c\x93\x31\xd4\xb2\xf9\x26\xba\xcc\x57\x2e\xa7"
      "\x9e\xcd\x37\xd9\xa3\xfc\xa9\xec\x73\xeb\xed\xfc\x7d\x1d\xf3\x6d\xa9\x28"
      "\x7f\xa2\x34\xad\xdb\x72\xc3\x28\x4b\xdb\x71\x23\x14\xb5\xd9\x8e\x74\xad"
      "\x36\x3b\xbb\xf4\x9b\x3c\xb4\x7e\xd7\x4f\x15\xb3\xe7\xcf\x9e\x7b\xe6\xc2"
      "\x80\x2a\x0a\xac\xbb\x7f\xdd\x17\x42\x38\x20\xac\x34\x34\x9b\xcd\x9f\xb4"
      "\x56\xe0\x10\xd4\x45\x10\x56\x1b\x9a\x3b\x07\x7d\x04\x02\x58\x92\xdf\x2f"
      "\xbc\xcd\xc5\xfc\xca\xc2\xda\xb4\x3f\x6d\xb2\xbf\xf2\x6f\x3c\x5a\xeb\xfe"
      "\x7e\x58\x07\x1b\xbd\xfd\x2b\x7f\xb4\xca\xff\xf5\x25\x47\x1c\xd6\xcf\x66"
      "\xdd\x9a\xd2\x72\xa5\xfd\x68\x47\x4c\xe7\xf7\x11\xf2\xe7\x97\x56\xba\xff"
      "\xa7\xcf\xcb\xef\x47\xd4\xfb\xac\x67\xaf\xfb\x08\xa3\x72\x7f\xa1\x57\x3d"
      "\x27\x36\xb8\x1e\xab\xd5\xab\xfe\xf9\x76\xb1\x59\x7d\x23\xc6\x69\x3d\x7c"
      "\x33\xcb\x2f\xef\x3f\xf9\xff\x74\x54\xfe\xc7\x40\x77\xff\xde\xa8\xeb\xff"
      "\xaf\x4d\x0f\xfc\x5a\xe7\x62\x38\x30\x04\x75\xd8\xd4\xa1\x3e\x04\x75\x10"
      "\xfa\x0e\xcd\x41\x1f\x80\x80\xa1\xb5\xfc\xdc\xdc\x92\x66\x94\xf2\xf3\xe7"
      "\xfa\xf2\xfc\x2d\x15\xf9\x5b\x2b\xf2\xa7\x2b\xf2\xb7\x55\xe4\x6f\xaf\xc8"
      "\x87\x71\xf6\xfb\xe7\x7f\x16\x5e\x2e\x96\x7f\xe7\xe7\xbf\xe9\x57\x7a\x3d"
      "\x2c\x5d\x67\xbb\x2b\xc6\x1f\x5b\x61\x7d\xf2\xeb\x91\x2b\x2d\x3f\x7f\xee"
      "\x77\xa5\xd6\x5a\x7e\xfe\x3c\x31\x0c\xb3\x37\x4f\x3d\x79\xe6\xab\x4f\x3f"
      "\x75\x6d\xe9\xf9\xff\xa2\xbd\xfd\xdf\x8a\xdb\xfb\x81\x98\x6e\xc4\x7d\xeb"
      "\x6a\x9c\x21\x5d\x2f\xcc\xaf\xab\xb7\x9f\xfd\x6f\x74\x96\x53\xeb\x31\xdf"
      "\xdd\x59\x7d\xee\xba\x6d\xfe\xe6\x52\x89\xbb\x3b\xe7\x2b\x76\x2f\x7f\x4e"
      "\x28\x1d\x67\x6e\xab\xc7\x4c\xe7\xfb\x76\xf6\x9a\x6f\x7f\xe7\x7c\x8d\x6c"
      "\xbe\xe9\x18\xb6\x66\xf5\xcd\xcf\x4f\xb6\x65\xef\x4b\xe7\x1f\xe9\xb8\x9a"
      "\xd6\xd7\x64\xb6\xbc\xf5\x6c\x39\xa6\xb2\x7a\xa4\xe3\xca\xae\x18\xe7\xf5"
      "\x80\xd5\x48\xdb\x63\xaf\xe7\xff\xd3\xf6\x39\x13\xea\xc5\x33\x67\xcf\x9d"
      "\x79\x38\xa6\xd3\x76\xfa\xa7\x89\xfa\x96\xc5\xe9\x87\xca\x1f\xfa\x9b\x8d"
      "\xa9\x3b\xb0\x36\xfd\xb6\xff\x99\x09\x9d\xed\x7f\x76\xb4\xa7\xd7\x6b\xe5"
      "\xe3\xc2\xce\xe5\xe9\x45\xf9\xb8\xd0\xc8\xa6\xcf\x2f\x25\xdb\xb7\xc9\xd3"
      "\xf4\xc3\x31\x9d\xbe\xe7\xbe\x3b\x31\xdd\x9a\x3e\x7b\xfa\xfb\xe7\x9e\x5e"
      "\xef\x85\x87\x31\x77\xe1\x85\x17\xbf\x77\xea\xdc\xb9\x33\x3f\xf4\x22\xbd"
      "\x98\xb6\x5a\xbc\xf0\xa2\xea\xc8\xb1\x59\x9f\x1c\x84\xf1\x31\xf7\xfc\x73"
      "\x3f\x98\xbb\xf0\xc2\x8b\x0f\x9d\x7d\xee\xd4\xb3\x67\x9e\x3d\x73\xfe\xf0"
      "\x91\x23\x87\xe7\xe7\x8f\x7c\xed\xf0\xc2\x5c\xeb\xbc\x7e\xae\x7c\x76\x0f"
      "\x6c\x26\xcb\x5f\xfa\x83\xae\x09\x00\x00\x00\x00\x00\x00\x00\x00\x00\xd0"
      "\xaf\x1f\x9d\x38\x7e\xed\x2f\x6f\x7f\xe5\xbd\xa5\xf6\xff\xcb\xed\xff\x52"
      "\xfb\xff\xf4\xe4\x6f\x6a\xff\xff\xd3\xac\xfd\x7f\xde\x4e\x3e\xb5\x0a\x48"
      "\xed\x00\x77\x75\xc9\x6f\x8d\xbb\xf7\x66\x67\x3d\xa6\xb2\xf9\xea\x31\x7c"
      "\x3c\xab\xef\xee\xac\x9c\x3d\xd9\xfb\x3e\x11\xe3\xf6\x38\x7e\xb1\xfd\x7f"
      "\x6a\x6f\x9f\xf7\xeb\x9a\xea\x73\x4f\x36\x3d\xef\xbf\x37\xcd\x97\x75\x27"
      "\x70\x5b\x7f\x29\x53\x59\x1f\x24\xed\xf1\x02\x63\x83\xfd\x4f\xc7\xf4\xe5"
      "\x18\xff\x2a\xc0\x00\x15\xd3\xdd\x27\xc7\xb8\xaa\x7f\xeb\xb4\xad\xa7\xfe"
      "\x29\xf4\x4b\x31\x9a\xd2\xff\x2d\x6d\x0d\xa9\x1f\x93\xd4\xfe\xbb\x57\xbf"
      "\x4e\xe9\xf8\xbf\x6b\x03\xea\xc8\xfa\xdb\x88\xe6\x84\x83\x5e\x46\xa0\xbb"
      "\x7f\x0e\xfd\xf8\x9f\xa5\x33\xf1\x81\xd7\xe5\x23\x43\xb3\x39\xf8\x3a\xac"
      "\x3d\x0c\xff\x7a\x16\xd6\x31\x34\x9b\x46\xf1\x00\x86\xc3\xa0\xc7\xff\x4c"
      "\xd7\x3d\x53\x7c\xfe\x8f\xdf\xda\xba\x18\xd2\x6c\x37\x1e\xed\x3c\x5e\xe6"
      "\xfd\x97\xc2\x5a\x0c\xfb\xf8\x93\xca\xdf\x5c\xe3\x7f\xb6\xc7\xbf\xeb\xeb"
      "\xf8\xd7\xa5\x77\xf5\x8e\x7e\x9e\xfb\x1f\x5d\xe1\x3f\xbf\xb8\xfe\x5e\xa9"
      "\xd8\xb0\xb7\xdf\xe3\x6f\xbe\xfc\xa9\x1f\xe8\xdd\xd5\x65\x96\x7d\x18\xcb"
      "\x4f\xcb\xff\x40\xe8\xaf\xfc\xe6\x6b\x59\xf9\xf9\x0d\xa1\x3e\xfd\x37\x2b"
      "\x7f\x5b\x9f\xe5\xdf\xb6\xfc\xfb\x57\x57\xfe\xff\x62\xf9\x69\xb5\x3d\xf8"
      "\x99\x7e\xcb\x5f\xaa\x71\x51\xeb\xac\x47\x7e\xdd\x38\xdd\xff\xcb\xaf\x1b"
      "\x27\x37\xb3\xe5\x4f\x7d\x7b\xae\x78\xf9\x57\x39\x50\xe3\xad\x58\x3e\x8c"
      "\xb3\xde\xe3\xcc\xf6\x3b\x82\xed\x70\x1a\x95\xf1\x7f\x7b\xc9\x9f\xc3\xf8"
      "\x72\x4c\xa7\x03\x61\x7a\xce\x21\xff\x46\x5e\x69\xfd\xd3\xf3\x15\xe9\x7b"
      "\x60\x4f\xf6\xf9\x45\xc5\xf7\xdb\xa8\x8c\x53\xdc\xcb\xb8\x8f\xff\xfb\xf5"
      "\x18\x57\xed\x0f\x69\xfc\xdf\xb4\x3d\x36\xba\xa4\x6b\xa5\x74\xbd\xcb\xba"
      "\x1d\xf5\x6d\x05\x36\x9b\xf7\x87\xfe\xfe\xdf\x88\x85\x8b\x43\x50\x07\x61"
      "\x48\xc3\x70\x8c\x81\x5d\x0e\xcd\x66\x73\xa0\x1d\x79\xeb\x45\x7c\xb0\x06"
      "\xbd\xfe\x07\x7d\xf7\x79\xd0\xe5\x0f\x7a\xfd\x57\xc9\xc7\xff\xcd\xcf\xe1"
      "\xf3\xf1\x7f\x6b\xd9\x0f\x88\x7c\xfc\xdf\xfc\xfd\xf9\xf8\xbf\x79\x7e\x3e"
      "\xbe\x5e\x9e\x9f\x8f\xff\x9b\xaf\xcf\x7c\xfc\xdf\x3c\xff\x9e\xec\x73\xf3"
      "\x2b\xd8\x33\x15\xf9\x9f\xac\xc8\xdf\x5b\x91\xbf\x6f\x39\x7f\xba\x5b\xfe"
      "\xfe\x8a\xf7\x7f\xaa\x22\xff\x60\x45\xfe\xbd\x15\xf9\xf7\x55\xe4\xdf\x5d"
      "\x91\x3f\x51\x91\xff\xd9\x8a\xfc\xcf\x55\xe4\xdf\x5f\x91\xff\x60\x45\xfe"
      "\xe7\x2b\xf2\x37\xbb\x56\x7b\x94\xd2\x4e\x35\x6e\xcb\x0f\xe3\x2c\x6f\x9f"
      "\x67\xff\x87\xf1\x91\xee\xff\xf4\xda\xff\x77\x57\xe4\x03\xa3\xeb\xe7\x6f"
      "\x1c\x7a\xec\xa9\xdf\x7d\xa7\xb1\xd4\xfe\x7f\xaa\xfd\x7b\x2d\xdd\xc7\x3b"
      "\x16\xd3\xf5\xf8\xdb\xf9\xc7\x31\x9d\xdf\xf7\x0e\xa5\xf4\x62\xde\xdb\x31"
      "\xfd\xb7\x2c\x7f\xd8\xaf\x77\xc0\x38\xc9\xfb\xcf\xc8\xbf\xdf\x1f\xa8\xc8"
      "\x07\x46\x57\x7a\xce\xcb\xfe\x0d\x63\xa8\xe8\xde\x63\x4f\x7e\xbf\xad\x57"
      "\xbf\x55\xbd\xce\xf3\x19\x2d\x5f\x88\xf1\x17\x63\xfc\xa5\x18\x3f\x14\xe3"
      "\xd9\x18\xcf\xc5\xf8\x50\x8c\xe7\x37\xa8\x7e\xdc\x19\x8f\xfd\xf6\x0f\x47"
      "\x5f\x2e\x96\x7f\xef\xef\xcc\xf2\xfb\x7d\x9e\x3c\x6f\x0f\x94\xf7\x13\x75"
      "\xb8\xcf\xfa\xe4\xd7\x07\x56\xfa\x3c\x7b\xde\x8f\xdf\x4a\xad\xb5\xfc\x55"
      "\x36\x07\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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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      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x18\x98\x5a\xeb\xef\xc2\xc2\x4c\x11\xc2"
      "\x95\xb7\x5e\x3d\xfe\xe4\xc9\xb3\x73\x8b\x53\x1e\x69\xcf\xd1\x68\xfd\x9d"
      "\x2c\xa5\xea\xed\xf7\x85\xf0\x70\x8c\x27\x62\xfc\xcb\xf8\xe2\xe6\x07\x2f"
      "\x9d\x2e\xc7\xb7\x62\x5c\x84\xf9\x50\x84\xa2\x3d\x3d\x3c\x71\xa3\x5d\xd2"
      "\xf6\x10\xc2\xc5\x70\x20\x5c\x0d\x8d\xb0\xf7\xca\xb5\x57\xde\x99\x7f\xfc"
      "\xe4\xa5\x13\x97\x0f\xbe\xfb\xfa\xd1\xeb\x77\x6e\x0d\x00\x00\x00\xc0\xe6"
      "\xf7\xff\x00\x00\x00\xff\xff\xa6\x52\x1b\x08",
      2675);
  syz_mount_image(
      /*fs=*/0x20000000, /*dir=*/0x20000040,
      /*flags=MS_LAZYTIME|MS_STRICTATIME|MS_RELATIME|MS_NOATIME*/ 0x3200400,
      /*opts=*/0x20000140, /*chdir=*/3, /*size=*/0xa73, /*img=*/0x20003cc0);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 32 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x193042 (4 bytes)
  //    mode: open_mode = 0x0 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x20000100, "./file2\000", 8);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000100ul,
                /*flags=O_SYNC|O_DIRECT|O_CREAT|O_CLOEXEC|FASYNC|0x2*/ 0x193042,
                /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  write$FUSE_INIT arguments: [
  //    fd: fd_fuse (resource)
  //    arg: ptr[in, fuse_out_t[fuse_unique, fuse_init_out]] {
  //      fuse_out_t[fuse_unique, fuse_init_out] {
  //        len: len = 0x50 (4 bytes)
  //        err: fuse_errors = 0x0 (4 bytes)
  //        unique: fuse_unique (resource)
  //        payload: fuse_init_out {
  //          major: const = 0x7 (4 bytes)
  //          minor: const = 0x2b (4 bytes)
  //          max_readahead: int32 = 0xffffffea (4 bytes)
  //          flags: fuse_init_flags = 0x0 (4 bytes)
  //          max_background: int16 = 0x0 (2 bytes)
  //          congestion_threshold: int16 = 0x0 (2 bytes)
  //          max_write: int32 = 0x0 (4 bytes)
  //          time_gran: int32 = 0x0 (4 bytes)
  //          max_pages: const = 0x0 (2 bytes)
  //          map_alignment: const = 0x0 (2 bytes)
  //          flags2: fuse_init_flags2 = 0x0 (4 bytes)
  //          max_stack_depth: int32 = 0x0 (4 bytes)
  //          unused: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00} (length 0x18)
  //        }
  //      }
  //    }
  //    len: bytesize = 0x2000 (8 bytes)
  //  ]
  *(uint32_t*)0x20000000 = 0x50;
  *(uint32_t*)0x20000004 = 0;
  *(uint64_t*)0x20000008 = 0;
  *(uint32_t*)0x20000010 = 7;
  *(uint32_t*)0x20000014 = 0x2b;
  *(uint32_t*)0x20000018 = 0xffffffea;
  *(uint32_t*)0x2000001c = 0;
  *(uint16_t*)0x20000020 = 0;
  *(uint16_t*)0x20000022 = 0;
  *(uint32_t*)0x20000024 = 0;
  *(uint32_t*)0x20000028 = 0;
  *(uint16_t*)0x2000002c = 0;
  *(uint16_t*)0x2000002e = 0;
  *(uint32_t*)0x20000030 = 0;
  *(uint32_t*)0x20000034 = 0;
  memset((void*)0x20000038, 0, 24);
  syscall(__NR_write, /*fd=*/r[0], /*arg=*/0x20000000ul, /*len=*/0x2000ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  if ((reason = setup_usb()))
    printf("the reproducer may not work as expected: USB injection setup "
           "failed: %s\n",
           reason);
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}