// https://syzkaller.appspot.com/bug?id=42ba0c369bbd49713e8808008c57f1fa8d9dbf10
// 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 <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/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

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

#ifndef __NR_bpf
#define __NR_bpf 321
#endif
#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;
}

//% 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;
}

#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 setup_sysctl()
{
  int cad_pid = fork();
  if (cad_pid < 0)
    exit(1);
  if (cad_pid == 0) {
    for (;;)
      sleep(100);
  }
  char tmppid[32];
  snprintf(tmppid, sizeof(tmppid), "%d", cad_pid);
  struct {
    const char* name;
    const char* data;
  } files[] = {
      {"/sys/kernel/debug/x86/nmi_longest_ns", "10000000000"},
      {"/proc/sys/kernel/hung_task_check_interval_secs", "20"},
      {"/proc/sys/net/core/bpf_jit_kallsyms", "1"},
      {"/proc/sys/net/core/bpf_jit_harden", "0"},
      {"/proc/sys/kernel/kptr_restrict", "0"},
      {"/proc/sys/kernel/softlockup_all_cpu_backtrace", "1"},
      {"/proc/sys/fs/mount-max", "100"},
      {"/proc/sys/vm/oom_dump_tasks", "0"},
      {"/proc/sys/debug/exception-trace", "0"},
      {"/proc/sys/kernel/printk", "7 4 1 3"},
      {"/proc/sys/kernel/keys/gc_delay", "1"},
      {"/proc/sys/vm/oom_kill_allocating_task", "1"},
      {"/proc/sys/kernel/ctrl-alt-del", "0"},
      {"/proc/sys/kernel/cad_pid", tmppid},
  };
  for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
    if (!write_file(files[i].name, files[i].data)) {
    }
  }
  kill(cad_pid, SIGKILL);
  while (waitpid(cad_pid, NULL, 0) != cad_pid)
    ;
}

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 < 14; 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 == 6 ? 4000 : 0) + (call == 12 ? 4000 : 0));
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
}

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

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    syscall(__NR_sendmsg, /*fd=*/-1, /*msg=*/0ul, /*f=*/0ul);
    break;
  case 1:
    *(uint32_t*)0x4000000000c0 = 0x11;
    *(uint32_t*)0x4000000000c4 = 0xb;
    *(uint64_t*)0x4000000000c8 = 0;
    *(uint64_t*)0x4000000000d0 = 0x400000000040;
    memcpy((void*)0x400000000040, "GPL\000", 4);
    *(uint32_t*)0x4000000000d8 = 0;
    *(uint32_t*)0x4000000000dc = 0;
    *(uint64_t*)0x4000000000e0 = 0;
    *(uint32_t*)0x4000000000e8 = 0;
    *(uint32_t*)0x4000000000ec = 0;
    memset((void*)0x4000000000f0, 0, 16);
    *(uint32_t*)0x400000000100 = 0;
    *(uint32_t*)0x400000000104 = 0;
    *(uint32_t*)0x400000000108 = -1;
    *(uint32_t*)0x40000000010c = 0;
    *(uint64_t*)0x400000000110 = 0;
    *(uint32_t*)0x400000000118 = 0;
    *(uint32_t*)0x40000000011c = 0;
    *(uint64_t*)0x400000000120 = 0;
    *(uint32_t*)0x400000000128 = 0;
    *(uint32_t*)0x40000000012c = 0;
    *(uint32_t*)0x400000000130 = 0;
    *(uint32_t*)0x400000000134 = 0;
    *(uint64_t*)0x400000000138 = 0;
    *(uint64_t*)0x400000000140 = 0;
    *(uint32_t*)0x400000000148 = 0;
    *(uint32_t*)0x40000000014c = 0;
    *(uint32_t*)0x400000000150 = 0;
    syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x4000000000c0ul, /*size=*/0x94ul);
    break;
  case 2:
    syscall(__NR_sched_setscheduler, /*pid=*/0, /*policy=SCHED_RR*/ 2ul,
            /*prio=*/0ul);
    break;
  case 3:
    syscall(
        __NR_mmap, /*addr=*/0x400000000000ul, /*len=*/0xb36000ul,
        /*prot=PROT_GROWSUP|PROT_SEM|PROT_WRITE|PROT_EXEC|0xb635773f04ebbee0*/
        0xb635773f06ebbeeeul,
        /*flags=MAP_POPULATE|MAP_FIXED|MAP_ANONYMOUS|MAP_SHARED*/ 0x8031ul,
        /*fd=*/-1, /*offset=*/0ul);
    break;
  case 4:
    res = syscall(__NR_socketpair, /*domain=*/1ul, /*type=SOCK_DGRAM*/ 2ul,
                  /*proto=*/0, /*fds=*/0x400000000200ul);
    if (res != -1)
      r[0] = *(uint32_t*)0x400000000204;
    break;
  case 5:
    syscall(__NR_sendmmsg, /*fd=*/r[0], /*mmsg=*/0x400000000000ul,
            /*vlen=*/0x651ul, /*f=*/0ul);
    break;
  case 6:
    memcpy((void*)0x400000000500, "ext4\000", 5);
    memcpy((void*)0x400000000480, "./file0\000", 8);
    memcpy((void*)0x4000000004c0, "bsddf", 5);
    *(uint8_t*)0x4000000004c5 = 0x2c;
    *(uint8_t*)0x4000000004c6 = 0;
    memcpy(
        (void*)0x400000001040,
        "\x78\x9c\xec\xdd\x4f\x6c\x14\x55\x1c\x07\xf0\xef\x6e\xbb\x25\x01\xb4"
        "\x60\xfc\x83\xf8\xaf\x82\x4a\x11\xa5\xb6\x35\x41\x12\x4c\x24\xca\x49"
        "\x2e\x06\x13\xcf\x0d\x2d\x84\x58\xa8\xa1\x35\x11\x42\x8c\x26\x1e\xbc"
        "\x79\x31\xf1\xec\x41\xb9\x79\xe4\xe0\xc9\x78\xc0\xa3\x26\x78\xf1\xa6"
        "\x9e\x8c\x91\x18\x22\xf1\xa4\xd6\xcc\x76\x97\x2e\x65\xb7\x74\x43\xdb"
        "\xa9\xee\xe7\x93\xcc\xee\x9b\x9d\xd7\x7d\xbf\x99\xd7\xdf\xcc\xee\xeb"
        "\xcb\x34\x40\xcf\x1a\x2a\x1e\x2a\xc9\xd6\x24\xdf\x27\x19\x5c\x58\xbd"
        "\xb9\xc2\xd0\xc2\xd3\xf5\x6b\x17\x8e\xff\x79\xed\xc2\xf1\x4a\xe6\xe7"
        "\x8f\xfd\x5e\xa9\xd7\xfb\xe3\xda\x85\xe3\xcd\xaa\xcd\x9f\xdb\x52\x3c"
        "\x54\x93\xe1\x6a\x52\xfd\xa0\x92\x87\xda\xb4\x3b\x7b\xee\xfc\x9b\x13"
        "\xd3\xd3\x53\x67\x1b\xeb\x23\x73\xa7\xdf\x1a\x99\x3d\x77\xfe\xd9\x53"
        "\xa7\x27\x4e\x4e\x9d\x9c\x3a\x33\x7a\xe0\xe0\x0b\xe3\xa3\x07\xc6\xc6"
        "\xc7\x57\x6d\x5f\x5f\xbd\xf8\xee\xb1\x2d\xaf\xbd\x74\xe4\xa3\xc9\x2b"
        "\xbf\xcd\x5c\xfc\xe9\xcb\x22\xde\xad\x8d\x6d\xad\xfb\xb1\x5a\x86\x32"
        "\x74\xf3\xb1\x6c\xf1\xd4\x6a\x37\x56\xb2\xfb\x5a\xca\x95\xfe\x12\x03"
        "\xa1\x2b\x7d\x49\x8a\xee\xaa\xd5\xf3\x7f\x30\x7d\x59\xec\xbc\xc1\x7c"
        "\xf3\x63\xa9\xc1\x01\x6b\x6a\xbe\xb0\xa9\xe3\xe6\xf7\xe6\x81\xff\xb1"
        "\x4a\xca\x8e\x00\x28\x47\xf3\x42\x5f\x7c\xff\x6d\x2e\xeb\xf5\xd9\x83"
        "\xf2\x5d\x3d\xbc\xf0\x05\xb0\xe8\xf7\xeb\x8d\x65\x61\x4b\x7f\xaa\x8d"
        "\x3a\xb5\x25\xdf\xef\x57\xd3\x50\x92\x43\x97\x8e\x7c\x51\x2c\x59\xa3"
        "\x71\x18\x00\x00\x00\x80\x5e\xf6\xd5\xe1\x24\xcf\xb4\x1b\xff\xab\xe6"
        "\xfe\x96\x7a\x45\xf9\x81\x24\x3b\x92\x3c\x98\x64\x67\x52\x9f\xd7\xf3"
        "\x70\x92\x47\x92\x3c\x9a\xe4\xb1\xe6\x7c\xa2\x2e\x2c\xad\xbf\x74\xfc"
        "\xa7\xd2\x69\x02\x0d\xab\xe2\xea\xe1\xe4\x50\x63\x6e\xd7\xcd\xe3\x7f"
        "\xcd\xd1\xbf\x6c\xeb\x6b\xac\xdd\x55\xac\xa4\x56\x39\x71\x6a\x7a\xea"
        "\xb9\x24\x77\x27\x19\x4e\x6d\x53\xb1\x3e\xba\x4c\x1b\x97\xbf\xfd\xe7"
        "\xbb\x4e\xdb\x5a\xc7\xff\x8a\xa5\x68\xbf\x39\x16\xd8\x88\xe3\xd7\xfe"
        "\x25\x7f\x9f\x9e\x9c\x98\x9b\xb8\x93\x7d\x66\xd1\xd5\xf7\x93\x9d\xfd"
        "\xed\xfa\xbf\x72\x63\x26\x50\x91\x82\x8f\x27\xd9\xd5\xcd\x1b\xd7\x16"
        "\x8b\x3f\xef\xda\x7b\xb2\x53\xb5\xdb\xf7\x3f\x6b\x69\xfe\xd3\x64\x4f"
        "\xdb\xfc\x6f\x9c\x78\xaf\x1c\xac\x3f\x2d\x33\x3f\x73\xa4\x7e\x3e\x18"
        "\x69\x9e\x15\x6e\xf5\xe1\xe8\xd8\x2b\x9d\xda\xd7\xff\xe5\x2a\xf2\x7f"
        "\xf3\x72\xfd\x9f\x6c\xab\xb4\xce\xd7\x9d\xed\xbe\x8d\xcb\x3b\x2e\xbd"
        "\xd8\x69\x5b\xf7\xe7\xff\x1f\x3e\x2b\xce\xff\x03\x95\xd7\xeb\x01\x0e"
        "\x34\x5e\x7d\x67\x62\x6e\xee\xec\x68\x32\x50\x39\x7a\xeb\xeb\x63\xdd"
        "\xc7\xfc\xdf\xd6\xf9\x43\x53\xf3\x78\x34\x8f\x57\xd1\xff\xc3\xbb\xdb"
        "\x5f\xff\xef\x69\x79\xb7\xdd\x49\x9e\x48\xf2\x64\x63\xee\xf2\x9e\xfa"
        "\xb5\x3f\xd9\x9b\xe4\xe9\x24\xfb\x96\x89\xe6\xef\x97\x0f\xbc\xd1\x69"
        "\x9b\xfc\x2f\x57\xd1\xff\x93\x6d\xf3\xff\xc6\xd4\x80\x25\xf9\xdf\x7d"
        "\xe1\xd0\xf6\x4f\x8e\x76\x6a\x7f\x65\xf9\xff\x7c\xfd\x17\x7a\xb8\xf1"
        "\x8a\xcf\x7f\xb7\xb7\xd2\x0e\x2a\x3b\x4e\x00\x00\x00\x00\x00\x00\x00"
        "\x56\x47\xb5\x7e\x0f\xbc\x4a\x75\xff\x8d\x72\xb5\xba\x7f\xff\xc2\x3d"
        "\xfc\xee\xcd\xe6\xea\xf4\xcc\xec\xdc\xbe\x13\x33\x6f\x9f\x99\x5c\xb8"
        "\x57\xde\xb6\xd4\xaa\xcd\x99\x5e\x83\x2d\xf3\x41\x47\xeb\xe5\xc5\xf5"
        "\xb1\x25\xeb\xe3\x49\xb6\x27\xf9\xb8\xef\xaf\xc6\x9d\x07\x66\xa6\x27"
        "\xcb\xde\x79\xe8\x71\x5b\x3a\xe4\x7f\xe1\x97\xbe\xb2\xa3\x03\xd6\x9c"
        "\xfb\xb5\x42\xef\x5a\x41\xfe\xd7\xd6\x23\x0e\x60\xfd\xb9\xfe\x43\xef"
        "\x92\xff\xd0\xbb\xe4\x3f\xf4\x2e\xf9\x0f\xbd\x4b\xfe\x43\xef\x92\xff"
        "\xd0\xbb\x56\x9e\xff\x03\x6b\x1a\x07\xb0\xfe\x5c\xff\xa1\x27\xdd\xc9"
        "\x7d\xfd\x36\x5a\xa1\x3f\x1b\x22\x8c\xb6\x85\xe6\xfc\xa9\x92\xc2\x68"
        "\xfe\x4b\xfe\x0d\x72\x34\x36\x66\xe1\xf3\xaf\x93\x75\x68\xab\x2f\xc9"
        "\x46\xd9\xe5\x65\x0a\x65\x9e\x95\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x36\x8e\x7f\x03\x00\x00\xff\xff\x44\x03"
        "\xdb\x3c",
        1107);
    syz_mount_image(/*fs=*/0x400000000500, /*dir=*/0x400000000480, /*flags=*/0,
                    /*opts=*/0x4000000004c0, /*chdir=*/1, /*size=*/0x453,
                    /*img=*/0x400000001040);
    break;
  case 7:
    memcpy((void*)0x4000000008c0,
           "\x1b\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80", 14);
    syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x4000000008c0ul, /*size=*/0x48ul);
    break;
  case 8:
    memcpy((void*)0x4000000002c0, "/sys/power/resume", 17);
    res = syscall(
        __NR_openat, /*fd=*/0xffffffffffffff9cul, /*dir=*/0x4000000002c0ul,
        /*flags=O_TRUNC|O_SYNC|O_NONBLOCK|O_NOCTTY|O_NOATIME|O_EXCL|0x2*/
        0x141b82, /*mode=S_IXOTH|S_IWOTH|S_IWUSR*/ 0x83);
    if (res != -1)
      r[1] = res;
    break;
  case 9:
    sprintf((char*)0x400000000000, "0x%016llx", (long long)0x700);
    syscall(__NR_write, /*fd=*/r[1], /*buf=*/0x400000000000ul, /*len=*/0x12ul);
    break;
  case 10:
    syscall(__NR_getsockopt, /*fd=*/r[1], /*level=*/0x84, /*opt=*/1,
            /*val=*/0ul, /*len=*/0ul);
    break;
  case 11:
    memcpy((void*)0x400000000000, "./cgroup.net/cgroup.procs\000", 26);
    syscall(__NR_name_to_handle_at, /*fd=*/0xffffff9c,
            /*file=*/0x400000000000ul, /*handle=*/0ul, /*mnt=*/0ul,
            /*flags=AT_HANDLE_FID*/ 0x200ul);
    break;
  case 12:
    memcpy((void*)0x400000000580, "ext4\000", 5);
    memcpy((void*)0x4000000005c0, "./file0\000", 8);
    *(uint8_t*)0x400000000000 = 0;
    memcpy(
        (void*)0x400000000c00,
        "\x78\x9c\xec\xdd\xcb\x6f\x14\x47\x1a\x00\xf0\xaf\xc7\x0f\x6c\x8c\xd6"
        "\x03\x5a\xed\x2e\x7b\x58\x2c\xad\x56\x20\xed\x62\x63\x03\x2b\x14\xe5"
        "\x00\xd7\x08\x59\xe4\xa1\x5c\x72\x89\x83\x0d\x21\x18\xb0\xb0\xa3\xc4"
        "\x24\x12\x46\x22\x97\x48\x51\x2e\x51\x14\x29\xa7\x1c\x42\xfe\x8b\x04"
        "\x85\x2b\xa7\xe4\x94\x43\x2e\x39\x45\x48\x28\x89\x38\x46\xca\x44\x3d"
        "\xd3\x6d\x3c\x76\x8f\x5f\xd8\xd3\x88\xfe\xfd\xa4\x61\xba\xab\xa6\x5d"
        "\xd5\xd8\xdf\x54\x75\x4d\x55\x4f\x00\x95\x35\x92\xfe\x53\x8b\x38\x18"
        "\x11\x73\x49\xc4\x70\xb2\xb4\x9c\xd7\x1b\x59\xe6\x48\xeb\x75\x8f\x7e"
        "\x7b\xff\x7c\xfa\x48\xa2\xd1\x78\xf9\x97\x24\x92\x2c\x2d\x7f\x7d\x92"
        "\x3d\x0f\x65\x07\x0f\x44\xc4\x77\xdf\x26\x71\xa0\x67\x6d\xb9\xf3\x8b"
        "\x37\x2e\x4f\xcd\xce\xce\x5c\xcf\xf6\xc7\x16\xae\xcc\x8d\xcd\x2f\xde"
        "\x38\x7a\xe9\xca\xd4\xc5\x99\x8b\x33\x57\x27\xfe\x3f\x71\xea\xe4\x89"
        "\x93\xa7\xc6\x8f\x6d\xeb\xbc\x6e\x16\xa4\x9d\xbd\xfd\xd6\x3b\xc3\x1f"
        "\x4e\xbe\xf6\xe5\xe7\xbf\x27\xe3\x5f\xfd\x38\x99\xc4\xe9\x78\x21\x7b"
        "\xe1\xca\xf3\xd8\x29\x23\x31\xd2\xfc\x3f\x49\xd6\x66\x0d\x9d\xda\xe9"
        "\xc2\x4a\xd2\x93\xfd\x9d\x34\x1a\x8d\x46\x9e\x96\xf4\x96\x5b\x27\x36"
        "\x2f\xff\xfd\xf5\x45\xc4\xdf\x63\x38\x7a\xe2\xf1\x2f\x6f\x38\x3e\x78"
        "\xb1\xd4\xca\x01\xbb\xaa\x91\xb4\xde\xbb\x81\x2a\x4a\xc4\x3f\x54\x54"
        "\xde\x0f\xc8\xaf\xed\x57\x5f\x07\xd7\x4a\xe9\x95\x00\xdd\xf0\xf0\x4c"
        "\x6b\x00\x60\x6d\xfc\xf7\xb6\xc6\x06\x63\xa0\x39\x36\xb0\xf7\x51\x12"
        "\x2b\x87\x75\x92\x88\xd8\xde\xc8\x5c\xbb\x7d\x11\x71\xff\xde\xe4\xed"
        "\x0b\xf7\x26\x6f\xc7\x2e\x8d\xc3\x01\xc5\x96\x6e\x45\xc4\x3f\x8a\xe2"
        "\x3f\x69\xc6\x7f\x3d\x06\xa2\xde\x8c\xff\x5a\x5b\xfc\xa7\xfd\x82\x73"
        "\xd9\x73\x9a\xfe\xd2\x36\xcb\x5f\x3d\x54\x2c\xfe\xa1\x7b\x5a\xf1\x3f"
        "\xb0\x6e\xfc\x47\x87\xf8\x7f\x3d\x7d\xbe\xd9\x8a\xe1\x37\xb6\x59\x7e"
        "\xfd\xf1\xe6\x9b\x83\x6d\xf1\x3f\xb8\xdd\x53\x02\x00\x00\x00\x00\x00"
        "\x80\xca\xba\x7b\x26\x22\xfe\x57\xf4\xf9\x7f\x6d\x79\xfe\x4f\x14\xcc"
        "\xff\x19\x8a\x88\xd3\x3b\x50\xfe\xc8\xaa\xfd\xb5\x9f\xff\xd7\x1e\xec"
        "\x40\x31\x40\x81\x87\x67\x22\x9e\x2f\x9c\xff\x5b\xcb\x67\xff\xd6\x7b"
        "\x56\x2c\x61\xad\x47\x5f\x72\xe1\xd2\xec\xcc\xb1\x88\xf8\x4b\x44\x1c"
        "\x89\xbe\x3d\xe9\xfe\xf8\x3a\x65\x1c\xfd\xe8\xc0\x67\x9d\xf2\x46\xb2"
        "\xf9\x7f\xf9\x23\x2d\xff\x7e\x36\x17\x30\xab\xc7\x83\xde\x3d\xed\xc7"
        "\x4c\x4f\x2d\x4c\x3d\xc1\x29\x03\x99\x87\xb7\x22\xfe\x59\x38\xff\x37"
        "\x59\x6e\xff\x93\x82\xf6\x3f\x7d\x67\x98\xdb\x64\x19\x07\xfe\x73\xe7"
        "\x5c\xa7\xbc\x8d\xe3\x1f\xd8\x2d\x8d\x2f\x22\x0e\x17\xb6\xff\x8f\xef"
        "\x5a\x91\xac\x7f\x7f\x8e\xb1\x66\x7f\x60\x2c\xef\x15\xac\xf5\xaf\xf7"
        "\x3e\xfe\xba\x53\xf9\xdb\x8d\x7f\xb7\x98\x80\x27\x97\xb6\xff\x7b\xd7"
        "\x8f\xff\x7a\xb2\xf2\x7e\x3d\xf3\x5b\x2f\xe3\xf8\x62\x6f\xa3\x53\xde"
        "\x76\xfb\xff\xfd\xc9\x2b\xcd\xbb\x0a\xf5\x67\x69\xef\x4e\x2d\x2c\x5c"
        "\x1f\x8f\xe8\x4f\xce\xf6\xa4\xa9\x6d\xe9\x13\x5b\xaf\x33\x3c\x8b\xf2"
        "\x78\xc8\xe3\x25\x8d\xff\x23\xff\x5e\x7f\xfc\xaf\xa8\xff\x3f\x18\x11"
        "\x4b\xab\x7e\x76\xf2\x6b\xfb\x9a\xe2\xdc\xdf\xfe\x18\xfa\xa9\x53\x7d"
        "\xf4\xff\xa1\x3c\x69\xfc\x4f\x6f\xa9\xfd\xdf\xfa\xc6\xc4\x9d\xfa\x37"
        "\x9d\xca\xdf\x5c\xfb\x7f\xa2\xd9\xd6\x1f\xc9\x52\x8c\xff\x41\xcb\xa7"
        "\x79\x98\xf6\xb7\xa7\x17\x84\x63\x6f\x51\x56\xb7\xeb\x0b\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\xcf\x82\x5a\x44\xec\x8b\xa4\x36\xba\xbc\x5d\xab"
        "\x8d\x8e\x46\x0c\x45\xc4\x5f\x63\x6f\x6d\xf6\xda\xfc\xc2\x7f\x2f\x5c"
        "\x7b\xfb\xea\x74\x9a\xd7\xfc\xfe\xff\x5a\xfe\x4d\xbf\xc3\xad\xfd\x24"
        "\xff\xfe\xff\xfa\x8a\xfd\x89\x55\xfb\xc7\x23\x62\x7f\x44\x7c\xd2\x33"
        "\xd8\xdc\x1f\x3d\x7f\x6d\x76\xba\xec\x93\x07\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x80\xa7\xc4\x50\x87\xf5\xff\xa9\x9f"
        "\x7b\xca\xae\x1d\xb0\xeb\x7a\xcb\xae\x00\x50\x9a\x82\xf8\xff\xbe\x8c"
        "\x7a\x00\xdd\xa7\xfd\x87\xea\x12\xff\x50\x5d\xe2\x1f\xaa\x4b\xfc\x43"
        "\x75\x89\x7f\xa8\x2e\xf1\x0f\xd5\x25\xfe\xa1\xba\xc4\x3f\x00\x00\x00"
        "\x00\x00\x3c\x53\xf6\x1f\xba\xfb\x43\x12\x11\x4b\xcf\x0d\x36\x1f\xa9"
        "\xfe\x2c\xaf\xaf\xd4\x9a\x01\xbb\xad\x56\x76\x05\x80\xd2\xb8\xc5\x0f"
        "\x54\x97\xa9\x3f\x50\x5d\xae\xf1\x81\x64\x83\xfc\x81\x8e\x07\x6d\x74"
        "\xe4\x7a\xe6\xce\x3f\xc1\xc1\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x50\x39\x87\x0f\x5a\xff\x0f\x55\x65\xfd\x3f\x54\x97\xf5\xff\x50\x5d"
        "\xf9\xfa\xff\x43\x25\xd7\x03\xe8\x3e\xd7\xf8\x40\x6c\xb0\x92\xbf\x70"
        "\xfd\xff\x86\x47\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x3b\x69"
        "\x7e\xf1\xc6\xe5\xa9\xd9\xd9\x99\xeb\x36\x5e\x7d\x3a\xaa\xd1\xcd\x8d"
        "\x46\xa3\x71\x33\xfd\x2b\x78\x5a\xea\xb3\xf3\x1b\x49\x36\x43\xbd\x2b"
        "\x85\xe6\x53\xe1\xbb\x7f\xa6\xfd\x9b\x39\xc1\x7c\xad\xdf\xe6\x7e\x72"
        "\x79\xef\x49\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x40\xbb\x3f\x03\x00\x00\xff\xff\x89\x8c"
        "\x24\xe5",
        1515);
    syz_mount_image(/*fs=*/0x400000000580, /*dir=*/0x4000000005c0,
                    /*flags=MS_STRICTATIME|MS_SILENT|MS_NOSUID*/ 0x1008002,
                    /*opts=*/0x400000000000, /*chdir=*/4, /*size=*/0x5eb,
                    /*img=*/0x400000000c00);
    break;
  case 13:
    memcpy((void*)0x400000000040, ".\000", 2);
    syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x400000000040ul,
            /*flags=*/0, /*mode=*/0);
    break;
  }
}
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);
  setup_sysctl();
  const char* reason;
  (void)reason;
  use_temporary_dir();
  loop();
  return 0;
}