// https://syzkaller.appspot.com/bug?id=f34aaaca22b6590b45be3c10114cf04f402cfdc0
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.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/futex.h>
#include <linux/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#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 void thread_start(void* (*fn)(void*), void* arg)
{
  pthread_t th;
  pthread_attr_t attr;
  pthread_attr_init(&attr);
  pthread_attr_setstacksize(&attr, 128 << 10);
  int i = 0;
  for (; i < 100; i++) {
    if (pthread_create(&th, &attr, fn, arg) == 0) {
      pthread_attr_destroy(&attr);
      return;
    }
    if (errno == EAGAIN) {
      usleep(50);
      continue;
    }
    break;
  }
  exit(1);
}

typedef struct {
  int state;
} event_t;

static void event_init(event_t* ev)
{
  ev->state = 0;
}

static void event_reset(event_t* ev)
{
  ev->state = 0;
}

static void event_set(event_t* ev)
{
  if (ev->state)
    exit(1);
  __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE);
  syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000);
}

static void event_wait(event_t* ev)
{
  while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0);
}

static int event_isset(event_t* ev)
{
  return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE);
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
  uint64_t start = current_time_ms();
  uint64_t now = start;
  for (;;) {
    uint64_t remain = timeout - (now - start);
    struct timespec ts;
    ts.tv_sec = remain / 1000;
    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts);
    if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
      return 1;
    now = current_time_ms();
    if (now - start > timeout)
      return 0;
  }
}

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);
}

struct thread_t {
  int created, call;
  event_t ready, done;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    event_wait(&th->ready);
    event_reset(&th->ready);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    event_set(&th->done);
  }
  return 0;
}

static void execute_one(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  int i, call, thread;
  for (call = 0; call < 7; call++) {
    for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
         thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        event_init(&th->ready);
        event_init(&th->done);
        event_set(&th->done);
        thread_start(thr, th);
      }
      if (!event_isset(&th->done))
        continue;
      event_reset(&th->done);
      th->call = call;
      __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
      event_set(&th->ready);
      event_timedwait(&th->done, 50 + (call == 0 ? 4000 : 0));
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
  close_fds();
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

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

uint64_t r[1] = {0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    //  syz_mount_image$exfat arguments: [
    //    fs: ptr[in, buffer] {
    //      buffer: {65 78 66 61 74 00} (length 0x6)
    //    }
    //    dir: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 32 00} (length 0x8)
    //    }
    //    flags: mount_flags = 0x810 (8 bytes)
    //    opts: ptr[inout, array[ANYUNION]] {
    //      array[ANYUNION] {
    //      }
    //    }
    //    chdir: int8 = 0xfd (1 bytes)
    //    size: len = 0x1507 (8 bytes)
    //    img: ptr[in, buffer] {
    //      buffer: (compressed buffer with length 0x1507)
    //    }
    //  ]
    //  returns fd_dir
    memcpy((void*)0x200000000280, "exfat\000", 6);
    memcpy((void*)0x2000000000c0, "./file2\000", 8);
    memcpy(
        (void*)0x2000000042c0,
        "\x78\x9c\xec\xdc\x0b\x98\x4e\x55\xfb\x30\xf0\x75\xaf\xb5\x36\x63\x1a"
        "\x3c\x4d\x72\x5e\xf7\xba\x37\x4f\x1a\x2c\x92\x24\x94\x24\x87\x24\x49"
        "\x42\x72\x4e\x48\x9a\x24\x49\x92\x18\x72\x4a\x42\x12\x72\x9c\x24\x87"
        "\x31\x21\xe7\x34\x69\x9c\xcf\x87\x9c\x93\x26\xaf\x24\x49\x42\x42\xc2"
        "\xfa\xae\x91\x3e\xff\xde\xde\xf7\xaf\xf7\xff\xf5\x7e\xfa\xbf\x73\xff"
        "\xae\x6b\x5f\xd6\xfd\xec\xbd\xee\x7d\x6f\xf7\x3c\xf3\xec\xb5\xaf\x6b"
        "\x9e\x6f\xbb\x0e\xab\xd1\xb8\x66\xd5\x06\x44\x24\xfe\x27\xd4\xaf\x03"
        "\xf8\xe5\x9f\x24\x21\x44\x8c\x10\x62\xa0\x10\x22\xb7\x10\x22\x10\x42"
        "\x94\x8b\x2f\x17\x9f\xb9\x3f\x87\x82\xa4\xff\xd1\x49\xd8\xbf\x49\xc3"
        "\x94\xab\x5d\x01\xbb\x9a\xb8\xff\x59\x1b\xf7\x3f\x6b\xe3\xfe\x67\x6d"
        "\xdc\xff\xac\x8d\xfb\x9f\xb5\x71\xff\xb3\x36\xee\x7f\xd6\xc6\xfd\x67"
        "\x2c\x4b\x4b\x2d\x70\x2d\x6f\x59\x77\xe3\xe7\xff\xff\xcb\xc9\xdf\xbf"
        "\x14\xfc\xe1\xc9\xfc\xf9\x9f\x25\xc0\x3f\xdb\xc1\xfd\xff\x4f\xa3\xfe"
        "\xa5\xa3\xb9\xff\x59\x1b\xf7\x3f\x6b\xe3\xfe\x67\x6d\xdc\xff\xac\xec"
        "\x8f\xaf\x13\xd8\x7f\x26\x7e\xff\x67\x6d\xdc\x7f\xc6\xb2\xb4\x3f\xfd"
        "\x99\xf2\xba\x33\x57\xfb\x99\x36\x6f\xff\xc2\xc6\x18\x63\x8c\x31\xc6"
        "\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63"
        "\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31"
        "\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18"
        "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c"
        "\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6"
        "\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63"
        "\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31"
        "\xc6\x18\x63\x8c\xfd\x7f\x70\xc6\x5f\xa6\x85\x10\xbf\x8e\xaf\x76\x5d"
        "\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\xfb\xf3\xf8\xf7\xaf\x76\x05\x8c"
        "\x31\xc6\x18\x63\x8c\x31\xc6\x18\xfb\xf7\x03\x21\x85\x12\x5a\x04\x22"
        "\x9b\xc8\x2e\x62\x44\x0e\x11\x2b\xae\x11\x71\x22\xa7\xc8\x25\x72\x8b"
        "\x88\xb8\x56\xc4\x8b\xeb\x44\x1e\x71\xbd\xc8\x2b\xf2\x89\xfc\xa2\x80"
        "\x28\x28\x0a\x89\xc2\xc2\x08\x14\x56\x90\x08\x45\x11\x51\x54\x44\xc5"
        "\x0d\xa2\x98\xb8\x51\x24\x88\xe2\xa2\x84\x28\x29\x9c\x28\x25\x4a\x8b"
        "\x9b\x44\x19\x71\xb3\x28\x2b\x6e\x11\xe5\xc4\xad\xa2\xbc\xb8\x4d\x54"
        "\x10\x15\x2f\x9e\x33\xd3\x9d\xa2\x8a\xb8\x4b\x54\x15\x77\x8b\x6a\xa2"
        "\xba\xa8\x21\x6a\x8a\x7b\x44\x2d\x71\xaf\xa8\x2d\xee\x13\x75\xc4\xfd"
        "\xa2\xae\x78\x40\xd4\x13\x0f\x8a\xfa\xe2\x21\xd1\x40\x34\x14\x8d\xc4"
        "\xc3\xa2\xb1\x78\x44\x34\x11\x4d\x45\x33\xd1\x5c\xb4\x10\x2d\x45\xab"
        "\x2b\xcc\x4f\xce\xfd\x8f\xe6\xbf\x28\x7a\x88\x97\x44\x4f\xd1\x4b\x24"
        "\x89\xde\xa2\x8f\x78\x59\xf4\x15\xfd\x44\x7f\x31\x40\x0c\x14\xaf\x88"
        "\x41\xe2\x55\x31\x58\xbc\x26\x86\x88\xa1\x62\x98\x78\x5d\x0c\x17\x6f"
        "\x88\x11\xe2\x4d\x31\x52\x8c\x12\xa3\xc5\x5b\x62\x8c\x18\x2b\xc6\x89"
        "\xf1\x62\x82\x98\x28\x92\xc5\xdb\x62\x92\x78\x47\x4c\x16\xef\x3e\x92"
        "\x53\x4c\x15\xd3\xc4\x74\x91\x22\x66\x88\x54\xf1\x9e\x98\x29\x66\x89"
        "\xd9\xe2\x7d\x31\x47\xcc\x15\xf3\x44\x72\x8e\x05\x62\xa1\x58\x24\x3e"
        "\x10\x8b\xc5\x87\x22\x4d\x7c\x24\x96\x88\x8f\x45\xba\x58\x2a\x96\x89"
        "\xe5\x62\x85\x58\x29\x56\x89\xd5\x62\x8d\x58\x2b\xd6\x89\xf5\x62\x83"
        "\xd8\x28\x36\x89\xcd\x62\x8b\xf8\x44\x6c\x15\xdb\xc4\x76\xb1\x43\xec"
        "\x14\xbb\xc4\x6e\xf1\xa9\xd8\x23\x3e\x13\x7b\xc5\xe7\x22\x03\xbe\xf8"
        "\x17\xe7\x9f\xfe\xed\x7c\xd1\x0d\x04\x08\x90\x20\x41\x83\x86\x6c\x90"
        "\x0d\x62\x20\x06\x62\x21\x16\xe2\x20\x0e\x72\x41\x2e\x88\x40\x04\xe2"
        "\x21\x1e\xf2\x40\x1e\xc8\x0b\x79\x21\x3f\xe4\x87\x24\x28\x08\x85\xa1"
        "\x30\x20\x20\x10\x10\x14\x81\x22\x10\x85\x28\x14\x83\x62\x90\x00\x09"
        "\x50\x02\x4a\x80\x03\x07\xa5\xa1\x34\x94\x81\x9b\xa1\x2c\x94\x85\x72"
        "\x50\x0e\xca\x43\x79\xa8\x00\x15\xa1\x22\xdc\x0e\xb7\x43\x65\xa8\x0c"
        "\x55\xa0\x0a\x54\x85\xaa\x50\x0d\xaa\x41\x0d\xa8\x01\xf7\xc0\x3d\x70"
        "\x2f\xd4\x86\xda\x50\x07\xea\x40\x5d\xa8\x0b\xf5\xa0\x1e\xd4\xd7\xbf"
        "\xfe\xa8\x36\x82\xc6\xd0\x18\x9a\x40\x13\x68\x06\xcd\xa0\x05\xb4\x80"
        "\x56\xd0\x0a\x5a\x43\x6b\x68\x03\x6d\xa0\x1d\xb4\x83\xf6\xd0\x1e\x3a"
        "\x40\x07\x48\x84\x44\xe8\x08\x1d\xa1\x13\x74\x82\xce\xd0\x19\xba\x40"
        "\x17\xe8\x0a\x5d\xa1\x1b\xbc\x00\x2f\xc0\x8b\xf0\x22\xbc\x04\x2f\x41"
        "\x2f\xa8\x26\x7b\x43\x1f\xe8\x03\x7d\xa1\x2f\xf4\x87\x01\x30\x00\x5e"
        "\x81\x41\xf0\x2a\xbc\x0a\xaf\xc1\x10\x18\x0a\xc3\xe0\x75\x78\x1d\xde"
        "\x80\x11\x70\x0a\x46\xc2\x28\x18\x0d\xa3\xa1\xb2\x1c\x0b\xe3\x60\x3c"
        "\x90\x9c\x08\xc9\x90\x0c\xd9\xc5\x24\x98\x0c\x93\x61\x0a\x4c\x85\xa9"
        "\x30\x1d\x52\x60\x06\xa4\x42\x2a\xcc\x84\x59\x30\x0b\xde\x87\x39\x30"
        "\x17\xe6\xc2\x7c\x98\x0f\x0b\x61\x11\x2c\x82\xc5\xf0\x21\xa4\x41\x1a"
        "\x2c\x81\xd3\x90\x0e\x4b\x61\x19\x2c\x87\x15\xb0\x12\x56\xc0\x6a\x58"
        "\x03\xab\x61\x1d\xac\x87\x75\xb0\x11\x36\xc2\x66\xd8\x0c\x9f\xc0\x27"
        "\xb0\x0d\xb6\xc1\x0e\xd8\x01\xbb\x60\x17\x7c\x0a\x9f\xc2\x67\xf0\x19"
        "\x0c\x81\x0c\xc8\x80\x7d\xb0\x0f\xf6\xc3\x7e\x38\x00\x07\xe0\x20\x1c"
        "\x84\x43\x70\x08\x0e\xc3\x61\x38\x02\x47\xe0\x28\x1c\x85\x63\x70\x1c"
        "\x4e\xc0\x71\x38\x09\x27\xe1\x14\x9c\x86\x33\x42\x88\xb3\x70\x16\xce"
        "\xc1\x39\xb8\x00\x17\x32\xdf\xfc\x32\x93\x96\x5a\x66\x93\xd9\x64\x8c"
        "\x8c\x91\xb1\x32\x56\xc6\xc9\x38\x99\x4b\xe6\x92\x11\x19\x91\xf1\x32"
        "\x5e\xe6\x91\x79\x64\x5e\x99\x57\xe6\x97\xf9\x65\x41\x59\x50\x16\x96"
        "\x85\x25\x4a\x94\x24\x43\x59\x44\x16\x91\x51\x19\x95\xc5\x64\x31\x99"
        "\x20\x13\x64\x09\x59\x42\x3a\xe9\x64\x69\x59\x5a\x96\x91\x65\x64\x59"
        "\x59\x56\x96\x93\xb7\xca\xf2\xf2\x36\x59\x41\x56\x94\x6d\xdd\xed\xf2"
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        "\x87\xe0\x10\x1c\x86\xc3\x70\x38\x0e\xc7\x11\x38\x02\x47\xe2\x28\x1c"
        "\x8d\x6f\xe1\x18\x1c\x8b\xe3\x70\x3c\x4e\xc0\x89\x98\x8c\xc9\x38\x09"
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        "\xee\xc6\xdd\xb8\x07\xf7\xe0\x5e\xdc\x8b\x19\x98\x81\xfb\x70\x1f\xee"
        "\xc7\xfd\x78\x00\x0f\xe0\x41\x3c\x88\x87\xf0\x10\x1e\xc6\xc3\x78\x64"
        "\x4d\x41\x3c\x8a\x47\xf1\x18\x1e\xc3\x13\x78\x02\x4f\xe2\x49\x3c\x85"
        "\xa7\xf0\x0c\x9e\xc1\xb3\xf8\x33\x9e\xc3\xf3\x78\x01\x3d\xc6\xd8\x1c"
        "\x36\xd6\x5e\x63\xe3\x6c\x4e\x9b\xcb\xe6\xb6\x7f\x1f\xe7\xb7\x05\x6c"
        "\x41\x5b\xc8\x16\xb6\xc6\xe6\xb5\xf9\x7e\x13\xa3\xb5\x36\xc1\x16\xb7"
        "\x25\x6c\x49\xeb\x6c\x29\x5b\xda\xde\xf4\xbb\xb8\x82\xad\x68\x2b\xd9"
        "\xdb\xed\x1d\xb6\xb2\xbd\xd3\x56\xb1\x15\x6c\x0e\xf1\x5f\xe3\x5a\xf6"
        "\x5e\x5b\xdb\xde\x67\xeb\xd8\xfb\x6d\x4d\x7b\xcf\x6f\xe2\xba\xf6\x01"
        "\x5b\xcf\x3e\x62\xeb\xdb\xa6\xb6\x81\x6d\x6e\x1b\xd9\x96\xb6\xb1\x7d"
        "\xc4\x36\xb1\x4d\x6d\x33\xdb\xdc\xb6\xb0\x2d\x6d\x7b\xfb\x84\xed\x60"
        "\x9f\xb4\x89\xf6\x29\xdb\xd1\x3e\xfd\xbb\x78\xb1\xfd\xd0\xae\xb1\x6b"
        "\xed\x3a\xbb\xde\xee\xb1\x9f\xd9\x33\xf6\x27\x7b\xd8\x7e\x6b\xcf\xda"
        "\x9f\x6d\x4f\xdb\xcb\x0e\xb4\xaf\xd8\x41\xf6\x55\x3b\xd8\xbe\x66\x87"
        "\xd8\xa1\xbf\x8d\x85\xb0\xa3\xed\x5b\x76\x8c\x1d\x6b\xc7\xd9\xf1\x76"
        "\x82\x9d\xf8\xbb\x78\x9a\x9d\x6e\x53\xec\x0c\x9b\x6a\xdf\xb3\x33\xed"
        "\xac\xdf\xc5\x8b\xec\x07\x76\x8e\x4d\xb3\xf3\xec\x7c\xbb\xc0\x2e\xbc"
        "\x18\x67\xd6\x94\x66\x3f\xb2\x4b\xec\xc7\x36\xdd\x2e\xb5\xcb\xec\x72"
        "\xbb\xc2\xae\xb4\xab\xec\xea\xff\x5b\xeb\x72\xbb\xd1\x6e\xb2\x9b\xed"
        "\x6e\xfb\xa9\xdd\x6a\xb7\xd9\xed\x76\x87\xdd\x69\x77\x5d\x8c\x33\xaf"
        "\x63\xaf\xfd\xdc\x66\xd8\x2f\xec\x21\xfb\x8d\xdd\x6f\xbf\xb4\x07\xec"
        "\x11\x7b\xd0\x7e\x7d\x31\xce\xbc\xbe\x23\xf6\x3b\x7b\xd4\x7e\x6f\x8f"
        "\xd9\xe3\xf6\x84\xfd\xc1\x9e\xb4\x3f\xda\x53\xf6\xf4\xc5\xeb\xcf\xbc"
        "\xf6\x1f\xec\x79\x7b\xc1\x7a\x2b\x08\x48\x92\x22\x4d\x01\x65\xa3\xec"
        "\x14\x43\x39\x28\x96\xae\xa1\x38\xca\x49\xb9\x28\x37\x45\xe8\x5a\x8a"
        "\xa7\xeb\x28\x0f\x5d\x4f\x79\x29\x1f\xe5\xa7\x02\x54\x90\x0a\x51\x61"
        "\x32\x84\x64\x89\x28\xa4\x22\x54\x94\xa2\x74\x03\x15\xa3\x1b\x29\x81"
        "\x8a\x53\x09\x2a\x49\x8e\x4a\x51\x69\xba\x89\xca\xd0\xcd\x54\x96\x6e"
        "\xa1\x72\x74\x2b\x95\xa7\xdb\xa8\x02\x55\xa4\x4a\x74\x3b\xdd\x41\x95"
        "\xe9\x4e\xaa\x42\x77\x51\x55\xba\x9b\xaa\x51\x75\xaa\x41\x35\xe9\x1e"
        "\xaa\x45\xf7\x52\x6d\xba\x8f\xea\xd0\xfd\x54\x97\x1e\xa0\x7a\xf4\x20"
        "\xd5\xa7\x87\xa8\x01\x35\xa4\x46\xf4\x30\x35\xa6\x47\xa8\x09\x35\xa5"
        "\x66\xd4\x9c\x5a\x50\x4b\x6a\x45\x8f\x52\x6b\x7a\x8c\xda\x50\x5b\x6a"
        "\x47\x8f\x53\x7b\x7a\x82\x3a\xd0\x93\x94\x48\x4f\x51\x47\x7a\x9a\x3a"
        "\xd1\x33\xd4\x99\x9e\xa5\x2e\xf4\x1c\x75\xa5\xe7\xa9\x1b\xbd\x40\xdd"
        "\xe9\x45\xea\x41\x2f\x51\x4f\xea\x45\x49\xd4\x9b\xfa\xd0\xcb\xd4\x97"
        "\xfa\x51\x7f\x1a\x40\x03\xe9\x15\x1a\x44\xaf\xd2\x60\x7a\x8d\x86\xd0"
        "\x50\x1a\x46\xaf\xd3\x70\x7a\x83\x46\xd0\x9b\x34\x92\x46\xd1\x68\x7a"
        "\x8b\xc6\xd0\x58\x1a\x47\xe3\x69\x02\x4d\xa4\x64\x7a\x9b\x26\xd1\x3b"
        "\x34\x99\xde\xa5\x29\x34\x95\xa6\xd1\x74\x4a\xa1\x19\x94\x4a\xef\xd1"
        "\x4c\x9a\x45\xb3\xe9\x7d\x9a\x43\x73\x69\x1e\xcd\xa7\x05\xb4\x90\x16"
        "\xd1\x07\xb4\x98\x3e\xa4\x34\xfa\x88\x96\xd0\xc7\x94\x4e\x4b\x69\x19"
        "\x2d\xa7\x15\xb4\x92\x56\xd1\x6a\x5a\x43\x6b\x69\x1d\xad\xa7\x0d\xb4"
        "\x91\x36\xd1\x66\xda\x42\x9f\xd0\x56\xda\x46\xdb\x69\x07\xed\xa4\x5d"
        "\xb4\x9b\x3e\xa5\x3d\xf4\x19\xed\xa5\xcf\x29\x83\xbe\xa0\x7d\xf4\x37"
        "\xda\x4f\x5f\xd2\x01\xfa\x8a\x0e\xd2\xd7\x74\x88\xbe\xa1\xc3\xf4\x2d"
        "\x1d\xa1\xef\xe8\x28\x7d\x4f\xc7\xe8\x38\x9d\xa0\x1f\xe8\x24\xfd\x48"
        "\xa7\xe8\x34\x9d\xa1\x9f\xe8\x2c\xfd\x4c\xe7\xe8\x3c\x5d\x20\x4f\x22"
        "\x84\x50\x86\x2a\xd4\x61\x10\x66\x0b\xb3\x87\x31\x61\x8e\x30\x36\xbc"
        "\x26\x8c\x0b\x73\x86\xb9\xc2\xdc\x61\x24\xbc\x36\x8c\x0f\xaf\x0b\xf3"
        "\x84\xd7\x87\x79\xc3\x7c\x61\xfe\xb0\x40\x58\x30\x2c\x14\x16\x0e\x4d"
        "\x88\xa1\x0d\x29\x0c\xc3\x22\x61\xd1\x30\x1a\xde\x10\x16\x0b\x6f\x0c"
        "\x13\xc2\xe2\x61\x89\xb0\x64\xe8\xc2\x52\xa1\x88\xfc\xf2\x01\x56\x36"
        "\xbc\x25\x2c\x17\xde\x1a\x96\x0f\x6f\x0b\x2b\x84\x15\xc3\x4a\xe1\xed"
        "\xe1\x1d\x61\xe5\xf0\xce\xb0\x4a\x78\x57\x58\x35\xbc\x3b\xac\x16\x56"
        "\x0f\x6b\x84\x35\xc3\x7b\xc2\x5a\xe1\xbd\x61\xed\xf0\xbe\xb0\x4e\x78"
        "\x7f\x58\x36\x7c\x20\xac\x17\x3e\x18\xd6\x0f\x1f\x0a\x1b\x84\x0d\xc3"
        "\x46\xe1\xc3\x61\xe3\xf0\x91\xb0\x49\xd8\x34\x6c\x16\x36\x0f\x5b\x84"
        "\x2d\xc3\x56\xe1\xa3\x61\xeb\xf0\xb1\xb0\x4d\xd8\x36\x6c\x17\x3e\x1e"
        "\xb6\x0f\x9f\x08\x3b\x84\x4f\x86\x89\xe1\x53\x61\xc7\xf0\xe9\xcb\xfb"
        "\x8b\x07\xbf\x14\xf3\x77\xfb\x93\xc2\xde\xa1\xba\xf4\xd8\xe1\x3e\xb5"
        "\x20\xba\x30\xba\x28\xfa\x41\x74\x71\xf4\xc3\x68\x5a\xf4\xa3\xe8\x92"
        "\xe8\xc7\xd1\xf4\xe8\xd2\xe8\xb2\xe8\xf2\xe8\x8a\xe8\xca\xe8\xaa\xe8"
        "\xea\xe8\x9a\xe8\xda\xe8\xba\xe8\xfa\xe8\x86\xe8\xc6\xe8\xa6\xe8\xe6"
        "\xa8\xf7\x35\xb3\x0b\x07\x99\x0b\x61\xa1\x5d\xe0\xb2\xb9\xec\x2e\xc6"
        "\xe5\x70\xb1\xee\x1a\x17\xe7\x72\xba\x5c\x2e\xb7\x8b\xb8\x6b\x5d\xbc"
        "\xbb\xce\xe5\x71\xd7\xbb\xbc\x2e\x9f\xcb\xef\x0a\xb8\x82\xae\x90\x2b"
        "\xec\x8c\x43\x67\x1d\xb9\xd0\x15\x71\x45\x5d\xd4\xdd\xe0\x8a\xb9\x1b"
        "\x5d\x82\x2b\xee\x4a\xb8\x92\xce\xb9\x52\xae\xb4\x6b\xe9\x5a\xb9\x56"
        "\xae\xb5\x7b\xcc\xb5\x71\x6d\x5d\x3b\xf7\xb8\x7b\xdc\x3d\xe1\x9e\x70"
        "\x4f\xc6\x5c\x2a\xdc\x75\x72\xcf\xb8\xce\xee\x59\xd7\xc5\x3d\xe7\x9e"
        "\x73\xcf\xbb\x6e\xee\x05\xd7\xdd\xbd\xe8\x7a\xb8\x97\x5c\x4f\xd7\xcb"
        "\x25\xb9\x24\xd7\xc7\xf5\x71\x7d\x5d\x5f\xd7\xdf\xf5\x77\x03\xdd\x40"
        "\x37\xc8\x0d\x72\x83\xdd\x60\x37\xc4\x0d\x71\xc3\xdc\x30\x37\xdc\x0d"
        "\x77\x23\xdc\x08\x37\xd2\x8d\x74\xa3\xdd\x68\x37\xc6\x8d\x71\xe3\xdc"
        "\x38\x37\xc1\x4d\x70\xc9\x2e\xd9\x4d\x72\x93\xdc\x64\x37\xd9\x4d\x71"
        "\x53\xdc\x34\x37\xcd\xa5\xb8\x14\x97\xea\x52\xdd\x4c\x37\xd3\xcd\x76"
        "\xb3\xdd\x1c\x37\xc7\xcd\x73\xf3\xdc\x02\xb7\xc0\x2d\x72\x8b\xdc\x62"
        "\xb7\xd8\xa5\xb9\x34\xb7\xc4\x2d\x71\xe9\x2e\xdd\x2d\x73\xcb\xdc\x0a"
        "\xb7\xc2\xad\x72\xab\xdc\x1a\xb7\xc6\xad\x73\xeb\xdc\x06\xb7\xc1\x6d"
        "\x72\x9b\xdc\x16\xb7\xc5\x6d\x75\x5b\xdd\x76\xb7\xdd\xed\x74\x3b\xdd"
        "\x6e\xb7\xdb\xed\x71\x7b\xdc\x5e\xb7\xd7\x65\xb8\x0c\xb7\xcf\xed\x73"
        "\xfb\xdd\x7e\x77\xc0\x7d\xe5\x0e\xba\xaf\xdd\x21\xf7\x8d\x3b\xec\xbe"
        "\x75\x47\xdc\x77\xee\xa8\xfb\xde\x1d\x73\xc7\xdd\x09\xe7\xd5\x49\xf7"
        "\xa3\x3b\xe5\x4e\xbb\x33\xee\x27\x77\xd6\xfd\xec\xce\xb9\xf3\xee\x82"
        "\xf3\x2e\x39\xf2\x76\x64\x52\xe4\x9d\xc8\xe4\xc8\xbb\x91\x29\x91\xa9"
        "\x91\x69\x91\xe9\x91\x94\xc8\x8c\x48\x6a\xe4\xbd\xc8\xcc\xc8\xac\xc8"
        "\xec\xc8\xfb\x91\x39\x91\xb9\x91\x79\x91\xf9\x91\x05\x91\x85\x91\x45"
        "\x91\x0f\x22\x8b\x23\x1f\x46\xd2\x22\x1f\x45\x96\x44\x3e\x8e\xa4\x47"
        "\x96\x46\x96\x45\x96\x47\x56\x44\x56\x46\xbc\x2f\xb4\x35\xf4\x45\x7c"
        "\x51\x1f\xf5\x37\xf8\x62\xfe\x46\x9f\xe0\x8b\xfb\x12\xbe\xa4\x77\xbe"
        "\x94\x2f\xed\x6f\xf2\x65\xfc\xcd\xbe\xac\xbf\xc5\x97\xf3\xb7\xfa\xf2"
        "\xfe\x36\x5f\xc1\x57\xf4\x95\x7c\x53\xdf\xcc\x37\xf7\x2d\x7c\x4b\xdf"
        "\xca\x3f\xea\x5b\xfb\xc7\x7c\x1b\xdf\xd6\xb7\xf3\x8f\xfb\xf6\xfe\x09"
        "\xdf\xc1\x3f\xe9\x13\xfd\x53\xbe\xa3\x7f\xda\x77\xf2\xcf\xf8\xce\xfe"
        "\x59\xdf\xc5\x3f\xe7\xbb\xfa\xe7\xe7\x5e\xea\xb2\xef\xe1\x5f\xf2\x3d"
        "\x7d\x2f\x9f\xe4\x7b\xfb\x3e\xfe\x65\xdf\xd7\xf7\xf3\xfd\xfd\x00\x3f"
        "\xd0\xbf\xe2\x07\xf9\x57\xfd\x60\xff\x9a\x1f\xe2\x87\xfa\x61\xfe\x75"
        "\x3f\xdc\xbf\xe1\x47\xf8\x37\xfd\x48\x3f\xca\x8f\xf6\x6f\xf9\x31\x7e"
        "\xac\x1f\xe7\xc7\xfb\x09\x7e\xa2\x4f\xf6\x6f\xfb\x49\xfe\x1d\x3f\xd9"
        "\xbf\xeb\xa7\xf8\xa9\x7e\x9a\x9f\xee\x53\xfc\x0c\x9f\xea\xdf\xf3\x33"
        "\xfd\x2c\x3f\xdb\xbf\xef\xe7\xf8\xb9\x7e\x9e\x9f\xef\x17\xf8\x85\x7e"
        "\x91\xff\xc0\x2f\xf6\x1f\xfa\x34\xff\x91\x5f\xe2\x3f\xf6\xe9\x7e\xa9"
        "\x5f\xe6\x97\xfb\x15\x7e\xa5\x5f\xe5\x57\xfb\x35\x7e\xad\x5f\xe7\xd7"
        "\xfb\x0d\x7e\xa3\xdf\xe4\x37\xfb\x2d\xfe\x13\xbf\xd5\x6f\xf3\xdb\xfd"
        "\x0e\xbf\xd3\xef\xf2\xbb\xfd\xa7\x7e\x8f\xff\xcc\xef\xf5\x9f\xfb\x0c"
        "\xff\x85\xdf\xe7\xff\xe6\xf7\xfb\x2f\xfd\x01\xff\x95\x3f\xe8\xbf\xf6"
        "\x87\xfc\x37\xfe\xb0\xff\xd6\x1f\xf1\xdf\xf9\xa3\xfe\x7b\x7f\xcc\x1f"
        "\xf7\x27\xfc\x0f\xfe\xa4\xff\xd1\x9f\xf2\xa7\xfd\x19\xff\x93\x3f\xeb"
        "\x7f\xf6\xe7\xfc\x79\x7f\x81\xff\x66\x8d\x31\xc6\x18\x63\xec\x0f\x51"
        "\x57\xd8\xdf\xfb\x1f\xbc\x26\x2f\x6d\x99\xfa\x08\x21\x72\x6e\x2b\x70"
        "\xf0\xef\x73\x6e\xc8\xfb\xcb\xb8\x9f\xdc\xd3\x31\x73\xb9\xf7\x54\xaf"
        "\xae\x0d\x7f\xdd\x1a\x36\x4c\x4a\x4a\xba\x74\x6c\xba\x12\x41\xd1\xf9"
        "\xf0\x9b\xfc\x17\xbf\x7f\xe0\xd2\x1a\x71\xa9\x68\x27\x9e\x10\x89\xa2"
        "\xad\x28\xf3\x0f\xeb\xeb\x27\x2b\x5d\xbc\xef\xfb\xef\xf2\x47\x6f\x15"
        "\x22\x56\x88\x1c\xbf\xce\xc9\x5c\x1e\xc5\x8a\xbf\xcf\x7f\xf3\x3f\xc9"
        "\xdf\xf4\x03\xba\x52\xfe\xf9\x42\x24\x14\xbd\x3c\x27\xf3\x44\xbf\xc6"
        "\x97\xf3\x97\xfd\x27\xf9\x77\xb5\xbf\x42\xfe\x1c\x5f\x26\x0b\xd1\xe6"
        "\xbf\xcc\x89\x13\x97\xe3\xcb\xf9\x4b\x8b\xc7\xc4\xd3\x22\xf1\x37\x47"
        "\x32\xc6\x18\x63\x8c\x31\xc6\x18\x63\xbf\xe8\x27\xcf\x76\xbb\xd2\xfa"
        "\xb6\xe8\x7c\x21\x0a\xea\xcb\x73\xb2\x8b\xcb\xf1\x95\xd6\xe7\x57\x50"
        "\xe5\xcf\xb8\x06\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\xfd\xf7\x9e\x7d"
        "\xa1\xfb\x93\x8f\x26\x26\xb6\xed\xfc\x9f\x3c\xc8\xfe\xd7\x28\xe3\x2f"
        "\x30\x00\x21\xc4\x5f\xa0\x0c\x1e\xfc\xf5\x07\x57\xfb\x37\x13\x63\x8c"
        "\x31\xc6\x18\x63\xec\xcf\x76\xf9\xa6\xff\x6a\x57\xc2\x18\x63\x8c\x31"
        "\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18"
        "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c"
        "\x65\x5d\xbf\xf9\xd2\xaf\x6c\xff\xca\x37\x84\xc9\x3f\x7c\xf0\xd5\xbe"
        "\x46\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6"
        "\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63"
        "\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\xec\x6a"
        "\xfb\x3f\x01\x00\x00\xff\xff\x9d\xc7\x52\xc4",
        5383);
    syz_mount_image(/*fs=*/0x200000000280, /*dir=*/0x2000000000c0,
                    /*flags=MS_SYNCHRONOUS|MS_NODIRATIME*/ 0x810,
                    /*opts=*/0x2000000018c0, /*chdir=*/0xfd, /*size=*/0x1507,
                    /*img=*/0x2000000042c0);
    break;
  case 1:
    //  truncate arguments: [
    //    file: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 32 00} (length 0x8)
    //    }
    //    len: intptr = 0x63fc (8 bytes)
    //  ]
    memcpy((void*)0x200000000200, "./file2\000", 8);
    syscall(__NR_truncate, /*file=*/0x200000000200ul, /*len=*/0x63fcul);
    break;
  case 2:
    //  truncate arguments: [
    //    file: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 32 00} (length 0x8)
    //    }
    //    len: intptr = 0x63fc (8 bytes)
    //  ]
    memcpy((void*)0x200000000140, "./file2\000", 8);
    syscall(__NR_truncate, /*file=*/0x200000000140ul, /*len=*/0x63fcul);
    break;
  case 3:
    //  ioctl$FAT_IOCTL_SET_ATTRIBUTES arguments: [
    //    fd: fd (resource)
    //    cmd: const = 0x40047211 (4 bytes)
    //    arg: nil
    //  ]
    syscall(__NR_ioctl, /*fd=*/(intptr_t)-1, /*cmd=*/0x40047211, /*arg=*/0ul);
    break;
  case 4:
    //  openat arguments: [
    //    fd: fd_dir (resource)
    //    file: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 32 00} (length 0x8)
    //    }
    //    flags: open_flags = 0x0 (4 bytes)
    //    mode: open_mode = 0x80 (2 bytes)
    //  ]
    //  returns fd
    memcpy((void*)0x200000000000, "./file2\000", 8);
    syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000000ul,
            /*flags=*/0, /*mode=S_IWUSR*/ 0x80);
    break;
  case 5:
    //  openat arguments: [
    //    fd: fd_dir (resource)
    //    file: ptr[in, buffer] {
    //      buffer: {2e 00} (length 0x2)
    //    }
    //    flags: open_flags = 0x0 (4 bytes)
    //    mode: open_mode = 0xa0 (2 bytes)
    //  ]
    //  returns fd
    memcpy((void*)0x200000000000, ".\000", 2);
    res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000000ul,
                  /*flags=*/0, /*mode=S_IRGRP|S_IWUSR*/ 0xa0);
    if (res != -1)
      r[0] = res;
    break;
  case 6:
    //  ioctl$FS_IOC_REMOVE_ENCRYPTION_KEY arguments: [
    //    fd: fd_dir (resource)
    //    cmd: const = 0x8004587d (4 bytes)
    //    arg: ptr[inout, fscrypt_remove_key_arg] {
    //      fscrypt_remove_key_arg {
    //        key_spec: union fscrypt_key_specifier {
    //          desc: fscrypt_key_specifier__by_descriptor {
    //            type: const = 0x1 (4 bytes)
    //            reserved: const = 0x0 (4 bytes)
    //            descriptor: union fscrypt_key_descriptor {
    //              desc2: buffer: {e3 55 a7 6a 11 a1 be 18} (length 0x8)
    //            }
    //            reserved2: 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)
    //          }
    //        }
    //        removal_status_flags: int32 = 0x0 (4 bytes)
    //        reserved: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //        00 00 00 00} (length 0x14)
    //      }
    //    }
    //  ]
    *(uint32_t*)0x200000000080 = 1;
    *(uint32_t*)0x200000000084 = 0;
    memcpy((void*)0x200000000088, "\343U\247j\021\241\276\030", 8);
    memset((void*)0x200000000090, 0, 24);
    memset((void*)0x2000000000ac, 0, 20);
    syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x8004587d,
            /*arg=*/0x200000000080ul);
    break;
  }
}
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;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}