// https://syzkaller.appspot.com/bug?id=65f3caae39807b0b41f8e62dec2a517a7e510651
// 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_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, 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 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, loopfd = -1, 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) {
    memset(loopname, 0, sizeof(loopname));
    snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
    if (setup_loop_device(data, size, loopname, &loopfd) == -1)
      return -1;
    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) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
  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;
retry:
  while (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW) == 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, MNT_DETACH | UMOUNT_NOFOLLOW) == 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, MNT_DETACH | UMOUNT_NOFOLLOW))
        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, MNT_DETACH | UMOUNT_NOFOLLOW))
          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")) {
  }
}

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)
{
  int i, call, thread;
  for (call = 0; call < 5; 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);
}

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 (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      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:
    memcpy((void*)0x20000600, "hfsplus\000", 8);
    memcpy((void*)0x20000200, "./file2\000", 8);
    memcpy(
        (void*)0x20000640,
        "\x78\x9c\xec\xdd\xcd\x6f\x1c\x67\x1d\x07\xf0\xef\x6c\x1c\x27\x1b\x20"
        "\x75\xdb\xa4\x0d\xa8\x52\xad\x46\x2a\x08\x8b\xc4\x2f\x72\xc1\x5c\x08"
        "\x08\x21\x1f\x2a\x54\x95\x03\x67\x2b\x71\x1a\x2b\x9b\xb4\xd8\x2e\x72"
        "\x2b\x04\xe6\xfd\xca\xa1\x7f\x40\x39\xf8\xc6\x09\x89\x7b\xa4\x72\xe1"
        "\x02\xb7\x5e\x7d\xac\x84\xc4\xa5\x17\xdc\xd3\xa2\x99\x9d\xb5\xd7\x8e"
        "\xed\xae\x13\xdb\xbb\x2e\x9f\x8f\xf5\xf8\x79\x9e\x79\x66\x9e\xf9\xcd"
        "\x6f\x76\x76\x76\xd7\xb2\x36\xc0\xff\xad\xf9\x89\x8c\x3c\x4a\x91\xf9"
        "\x89\xd7\xd7\xca\xfe\xe6\xc6\x4c\x6b\x73\x63\xe6\x41\xb7\x9d\xe4\x42"
        "\x92\x46\x32\xd2\xa9\x52\xfc\xb7\xdd\x6e\x7f\x94\xdc\x4a\xa7\xe4\xab"
        "\xe5\xc2\x7a\xba\xe2\xa0\xfd\x7c\xb0\x34\xf7\xe6\xc7\x9f\x6e\x7e\xd2"
        "\xe9\x8d\xd4\xa5\x5a\xbf\x71\xd8\x76\xfd\x59\xaf\x4b\xc6\x93\x9c\xab"
        "\xeb\xe3\x9a\xef\xf6\x53\xcf\x57\x6c\x1f\x61\x99\xb0\xeb\xdd\xc4\xc1"
        "\xa0\x9d\x4f\xd2\xde\xe5\x67\xff\xf8\xf2\xf6\x48\x8f\xe6\x7e\x5b\x5f"
        "\x3c\x95\x18\x81\x93\x55\x74\xee\x9b\x8d\xbd\xcb\xc7\x92\x4b\xf5\x85"
        "\x5e\xbe\x0e\xe8\xdc\x15\xf7\x59\xef\xac\x59\x1f\x74\x00\x00\x00\x00"
        "\x70\x0a\x9e\xd9\xca\x56\xd6\x72\x79\xd0\x71\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\xc0\x59\x52\x7f\xff\x7f\x51\x97\x46\xb7\x3d\x9e\xa2"
        "\xfb\xfd\xff\xa3\xf5\xb2\xd4\xed\xe1\xf2\xf2\xd1\x56\x7f\x74\x52\x71"
        "\x00\x00\x00\x00\x00\x00\x00\xc0\x29\x7a\x79\x2b\x5b\x59\xcb\xe5\x6e"
        "\xbf\x5d\x54\x7f\xf3\x7f\xa5\xea\x5c\xa9\x7e\x7f\x29\xef\x66\x25\x8b"
        "\x59\xce\x8d\xac\x65\x21\xab\x59\xcd\x72\xa6\x92\x8c\xf5\x4c\x34\xba"
        "\xb6\xb0\xba\xba\x3c\xd5\xc7\x96\xd3\xfb\x6e\x39\xfd\x39\x81\x5e\xa8"
        "\xeb\xe6\xf1\x1c\x37\x00\x00\x00\x00\x00\x00\x00\x7c\xc1\xfc\x26\xf3"
        "\x3b\x7f\xff\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80"
        "\x61\x50\x24\xe7\x3a\x55\x55\xae\x74\xdb\x63\x69\x8c\x24\xb9\x98\x64"
        "\xb4\x5c\x6f\x3d\xf9\x57\xb7\x7d\x96\x3d\x1a\x74\x00\x00\x00\x00\x70"
        "\x0a\x9e\xd9\xca\x56\xd6\x72\xb9\xdb\x6f\x17\xd5\x7b\xfe\x17\xaa\xf7"
        "\xfd\x17\xf3\x6e\x1e\x66\x35\x4b\x59\x4d\x2b\x8b\xb9\x53\x7d\x16\xd0"
        "\x79\xd7\xdf\xd8\xdc\x98\x69\x6d\x6e\xcc\x3c\x28\xcb\xe3\xf3\x7e\xff"
        "\x3f\x47\x0a\xa3\x9a\x31\x9d\xcf\x1e\xf6\xdf\xf3\xb5\x6a\x8d\x66\xee"
        "\x66\xa9\x5a\x72\x23\xb7\xf3\x76\x5a\xb9\x93\x46\xb5\x65\xe9\x5a\x37"
        "\x9e\xfd\xe3\xfa\x75\x19\x53\xf1\xbd\x5a\x3f\x61\x15\xbb\x9b\x7f\xda"
        "\xbd\xe8\xb8\x1d\xf1\xc3\x94\xb1\x2a\x23\xe7\xb7\x33\x32\x59\xc7\x56"
        "\x66\xe3\xd9\xc3\x33\x71\xc4\xb3\xb3\x77\x4f\x53\x69\x6c\x07\x7b\x65"
        "\xcf\x9e\xf6\x1c\xc4\xd1\x73\x9e\xe4\x52\x5d\x97\xc7\xf3\x87\x93\xcd"
        "\xf9\x11\xed\xcd\xc4\x74\xcf\xa3\xef\x85\xc3\x73\x9e\x7c\xfd\x6f\x7f"
        "\xf9\xe9\xbd\xd6\xc3\xfb\xf7\xee\xae\x4c\x0c\xcf\x21\xf5\xe7\x5c\x5d"
        "\xb7\xbb\x0b\xf6\x66\x62\xa6\x27\x13\x2f\x7e\x91\x33\xf1\x98\xc9\x2a"
        "\x13\x57\xb7\xfb\xf3\xf9\x51\x7e\x92\x89\x8c\xe7\x8d\x2c\x67\x29\x3f"
        "\xcf\x42\x56\xb3\x98\xf1\xfc\xb0\x6a\x2d\xd4\x8f\xe7\xa2\xe7\x92\x3f"
        "\x20\x53\xb7\x76\xf5\xde\xf8\xbc\x48\x46\xeb\xf3\xd2\x39\x59\x47\x8b"
        "\xe9\x95\x6a\xdb\xcb\x59\xca\x8f\xf3\x76\xee\x64\x31\xaf\x55\x3f\xd3"
        "\x99\xca\xb7\x33\x9b\xd9\xcc\xf5\x9c\xe1\xab\x7d\x3c\xd3\x36\x0e\xb8"
        "\xea\xdb\x5f\xd9\x37\xf8\xeb\xdf\xa8\x1b\xcd\x24\x7f\xac\xeb\xe1\x50"
        "\xe6\xf5\xd9\x9e\xbc\xf6\x3e\xe7\x8e\x55\x63\xbd\x4b\x76\xb2\xf4\xdc"
        "\x71\xdf\x8f\x92\x91\xaf\xd5\x8d\x72\x1f\xbf\xad\xeb\xe1\xb0\x37\x13"
        "\x53\x3d\x99\x78\xfe\xf0\x4c\xfc\xb9\x7a\x5a\x59\x69\x3d\xbc\xbf\x7c"
        "\x6f\xe1\x9d\x3e\xf7\xf7\x6a\x5d\x97\xd7\xd1\xef\x87\xea\x2e\x51\x3e"
        "\x5e\x9e\x2b\x4f\x56\xd5\xdb\xfd\xe8\x28\xc7\x9e\xdf\x77\x6c\xaa\x1a"
        "\xbb\xb2\x3d\xd6\x78\x6c\xec\xea\xf6\x58\xe7\x4a\x5d\x3f\xf0\x4a\x1d"
        "\xad\x5f\xc3\x3d\x3e\xd3\x74\x35\xf6\xe2\xbe\x63\x33\xd5\xd8\xb5\x9e"
        "\xb1\xce\xeb\xad\xee\x95\xd8\x79\xbd\x05\xc0\xd0\xbb\xf4\xcd\x4b\xa3"
        "\xcd\x7f\x37\xff\xd9\xfc\xb0\xf9\xbb\xe6\xbd\xe6\xeb\x17\x7f\x70\xe1"
        "\x3b\x17\x5e\x1a\xcd\xf9\xbf\x9f\xff\xee\xc8\xe4\xb9\x57\x1b\x2f\x15"
        "\x7f\xcd\x87\xf9\xe5\xce\xfb\x7f\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe0\xc9\xad"
        "\xbc\xf7\xfe\xfd\x85\x56\x6b\x71\x79\x4f\xa3\xdd\x6e\xff\xea\x80\xa1"
        "\xb3\xdc\xe8\x7e\x9d\xd9\xb0\xc4\xd3\x67\xe3\xb3\xe1\x08\xe3\x29\x1a"
        "\x9f\xb5\xdb\xed\x7a\x49\xf1\xa4\xf3\x14\x39\xad\x98\xdb\xb5\xa1\x48"
        "\xdd\x80\x1a\x03\x7e\x62\x02\x4e\xdc\xcd\xd5\x07\xef\xdc\x5c\x79\xef"
        "\xfd\x6f\x2d\x3d\x58\x78\x6b\xf1\xad\xc5\x87\x73\xb3\xb3\x73\x93\x73"
        "\xb3\xaf\xcd\xdc\xbc\xbb\xd4\x5a\x9c\xec\xfc\x1e\x74\x94\xc0\x49\xd8"
        "\xb9\xe9\x0f\x3a\x12\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa0\x5f\x47"
        "\xf8\xc7\x80\x72\xf5\x27\xfa\x77\x82\x41\x1f\x23\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x70\xb6\xcd\x4f\x64\xe4\x51\x8a\x4c\x4d\xde\x98\x2c\xfb\x9b\x1b"
        "\x33\xad\xb2\x74\xdb\x3b\x6b\x8e\x24\x69\x24\x29\x7e\x91\x14\x1f\x25"
        "\xb7\xd2\x29\x19\xeb\x99\xae\x38\x68\x3f\x1f\x2c\xcd\xbd\xf9\xf1\xa7"
        "\x9b\x9f\xec\xcc\x35\xd2\x5d\xbf\x71\xd8\x76\xfd\x59\xaf\x4b\xc6\x93"
        "\x9c\xab\xeb\xe3\x9a\xef\xf6\x53\xcf\x57\x6c\x1f\x61\x99\xb0\xeb\xdd"
        "\xc4\xc1\xa0\xfd\x2f\x00\x00\xff\xff\xd2\xa7\x0f\x16",
        1594);
    syz_mount_image(0x20000600, 0x20000200, 0x1010054, 0x200001c0, 1, 0x63a,
                    0x20000640);
    break;
  case 1:
    memcpy((void*)0x20000380, "./file1\000", 8);
    res = syscall(__NR_openat, 0xffffff9c, 0x20000380ul, 0x141842ul, 0ul);
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    memcpy((void*)0x20002000, "./bus\000", 6);
    res = syscall(__NR_open, 0x20002000ul, 0x143042ul, 0ul);
    if (res != -1)
      r[1] = res;
    break;
  case 3:
    syscall(__NR_ftruncate, r[1], 0x2007ffbul);
    {
      int i;
      for (i = 0; i < 32; i++) {
        syscall(__NR_ftruncate, r[1], 0x2007ffbul);
      }
    }
    break;
  case 4:
    memcpy(
        (void*)0x20004200,
        "\x74\xef\xc4\xc4\x19\xfd\xb8\xd6\x6b\x12\xa7\xbb\xf3\x71\xd0\x56\xad"
        "\x6f\x01\xe9\x76\x2d\x70\x40\x1d\x1c\x9d\x33\x1b\x48\xb9\x25\xe9\xe6"
        "\xa7\x75\x9a\xbb\x20\x6b\x9b\x18\xbf\xc3\xf3\xf9\x6a\xdb\x2b\x37\xc2"
        "\x12\x1e\xf2\x1e\x91\xba\xc7\x68\xdd\x33\xdf\x29\x64\x9d\xa1\xd8\x2e"
        "\x82\x6a\x55\xc4\xd6\x20\xb6\xf5\x10\xda\xee\x26\x00\x4b\x74\x1c\x95"
        "\x1d\x52\x8d\x80\x6e\xfb\xe0\x0c\x43\x9f\x2d\xf4\x6d\x3a\xdf\x8b\xe2"
        "\x4e\x28\x0b\x94\x8a\x49\xaf\xd1\x7d\x56\x43\x7c\x6e\x75\x2d\x84\xf9"
        "\x9b\xf3\x7a\x88\xf0\xc5\x44\x88\xdd\x13\xb8\x48\xf2\x38\x1d\x7d\x2a"
        "\xec\xb6\x8e\xd1\x67\x62\xe4\xa3\xc1\xa8\x47\x56\x53\x64\xb9\xf1\xaf"
        "\x92\xc9\xc8\x9e\x06\xe8\x9f\xe6\x17\x9c\xb7\x07\x8a\x74\x2c\xb9\x68"
        "\xa9\xf0\x9c\xc6\x90\xdc\x47\x3d\xf2\x9d\x6a\xd9\xaf\x58\x79\xe9\xa2"
        "\x61\x8c\x63\x70\x21\x17\xa3\xa6\x3d\x3a\x42\x36\xba\xee\x86\xf5\xf4"
        "\x52\xe9\x66\x3a\x79\x53\x06\xda\xbb\x97\xdb\x88\x43\x48\xab\x43\x7b"
        "\xdc\x13\xb7\xcf\xb0\x3e\xff\x1c\xf2\x16\xf0\x9d\x21\x07\x8e\x18\x52"
        "\xfc\x7c\x96\x41\x3d\x9d\x65\xc5\x2c\xe9\xba\xa6\xbc\x26\xde\x7f\x02"
        "\x87\x38\xa1\x71\x20\xde\x30\xa4\x33\xc9\xc3\xc8\xe2\x76\xf3\xae\x5e"
        "\x18\xa1\xf9\x57\x67\xff\xfe\x8e\x98\xb0\xc3\xf1\x34\xf1\x22\x63\xb0"
        "\x1c\x36\x86\x6d\x4e\x0e\x85\x6c\xc1\x4e\xcf\x50\x27\x9a\xdb\x94\x38"
        "\xc6\x21\x9c\x49\xca\xe9\x73\xd8\xe7\xfa\xf3\x3d\xcd\xeb\x96\xd7\xef"
        "\x7e\x89\xae\x82\x8c\xb9\x1d\xf2\x29\x39\x30\x7b\xb1\xf7\xfb\x73\x92"
        "\xe1\xe2\x4f\x6b\x63\x16\x6b\x89\x93\x7c\x00\xeb\x8f\xea\x02\x45\xcd"
        "\x93\xe4\xaa\x80\x31\x60\xbd\x71\xc1\xa0\xbb\xb6\xb8\x28\x5d\x8a\xb6"
        "\x54\x48\x5a\xb9\x85\xf1\xdd\x2e\xb9\xab\xf5\x31\x31\xa9\x68\x0d\xca"
        "\xfe\x40\x00\xd3\xea\x52\x8d\xd5\x2a\xba\x3e\x4f\xf6\xa3\x88\x3e\xc6"
        "\x14\x25\x3d\x56\x27\xbd\x91\x52\x2d\x88\x11\x28\x32\x8e\xd1\xe0\x09"
        "\x07\xfa\x6c\xc4\x8c\xec\x52\x68\xbb\xed\xd8\x5e\xc0\x2d\x8b\xac\x31"
        "\x83\x46\x0d\xd1\xa2\x7f\xbc\x06\xb5\x64\x24\x73\xa4\x1a\x6c\xbf\xb0"
        "\x7f\x53\xde\xab\x24\x73\xb3\x7c\x3d\x10\xa1\x25\xd6\x10\xf1\xb9\xea"
        "\x5c\x83\xe7\xd4\x62\x04\x8f\x25\xfc\x1e\x79\x29\x5e\xef\xf7\x50\xa2"
        "\x3f\xaf\x5d\x54\x27\x58\xc4\x21\xbb\x06\x73\x50\x4c\x9d\xba\xe2\x95"
        "\x9f\x77",
        512);
    syscall(__NR_write, r[0], 0x20004200ul, 0xffe00ul);
    {
      int i;
      for (i = 0; i < 32; i++) {
        syscall(__NR_write, r[0], 0x20004200ul, 0xffe00ul);
      }
    }
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  use_temporary_dir();
  loop();
  return 0;
}