// https://syzkaller.appspot.com/bug?id=29f52d4baeec7d90c9fd0fb991721f3cad42a4d5
// 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_fsconfig
#define __NR_fsconfig 431
#endif
#ifndef __NR_fspick
#define __NR_fspick 433
#endif
#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif
#ifndef __NR_renameat2
#define __NR_renameat2 316
#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")) {
  }
}

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 < 9; 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 (;;) {
      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:
    memcpy((void*)0x20000080, "nilfs2\000", 7);
    memcpy((void*)0x20000300, "./bus\000", 6);
    memcpy(
        (void*)0x20000340,
        "\x78\x9c\xec\xdd\xdd\x8f\x54\x57\x01\x00\xf0\x33\xb3\x3b\xcb\x6e\xa1"
        "\xb2\x54\xb0\x2b\xc5\x02\xb6\xb6\x55\xdb\xa5\x2c\x2b\x7e\x10\x85\x06"
        "\x62\x22\x29\x8d\xf1\xa5\x49\xe3\x0b\xa1\xb4\x12\x11\x13\x6b\xfc\x68"
        "\x9a\x14\xf8\x07\x6c\xd3\x60\xe2\x93\x1f\xf1\xa9\x2f\x4d\x35\x26\xf6"
        "\xc5\x10\x9e\x7c\x69\x22\x24\x8d\x49\x9f\xaa\x0f\x3e\x48\x30\x36\xf1"
        "\x41\x51\x18\xc3\xee\x39\xb3\x77\x0e\x33\xdc\xd9\xd9\x8f\x3b\xc3\xfc"
        "\x7e\xc9\xdd\x33\xe7\x9e\x7b\xef\x39\xe7\xee\x9d\x3b\xf7\xf3\x9c\x00"
        "\x8c\xac\xfa\xc2\xdf\xf9\xf9\x99\x5a\x08\x17\xde\x79\xe3\xc8\xdf\x1f"
        "\xf9\xdb\xd4\xad\x31\x07\x5b\x53\x4c\x2f\xfc\x1d\x2f\xc4\x1a\x21\x84"
        "\x5a\x8c\x8f\x67\xcb\xfb\x60\x6c\x31\xbc\xf1\xe1\x2b\x27\x3a\x85\xb5"
        "\x30\xb7\xf0\x37\xc5\xc3\x33\xd7\x5a\xf3\x6e\x0c\x21\x9c\x0d\xbb\xc2"
        "\xc5\x30\x1d\xb6\x5f\xb8\xf2\xfa\xbb\x73\x4f\x1f\x3b\x77\xf4\xfc\xee"
        "\xcb\x6f\x1e\xb8\xba\x36\xb5\x07\x00\x80\xd1\xf2\xf5\x8b\x07\xe6\xb7"
        "\xfd\xe5\x4f\x0f\x6c\xb9\x1e\xc6\x0f\x85\x0d\xad\xf1\xe9\xf8\x7c\x3a"
        "\xc6\x37\xc5\xe3\xfe\x43\xf1\xc0\x3f\x1d\xff\xd7\x43\x7b\xbc\x56\x18"
        "\x8a\x26\xb2\xe9\xc6\xe3\x50\x9f\x6a\x9f\x6e\xac\xc3\x74\xc5\x7c\x1a"
        "\xd9\x74\xe3\x5d\xf2\x9f\xc8\xf2\x6f\x74\x99\x6e\x43\xb8\x73\xfe\x63"
        "\x85\x71\x9d\xea\x0d\xc3\x2c\x6d\xc7\xd3\xa1\x56\x9f\x6d\x8b\xd7\xeb"
        "\xb3\xb3\x8b\xe7\xe4\x61\xe1\xbc\x7e\xa2\x36\x7b\xe6\xd4\xe9\x17\x5e"
        "\xaa\xa8\xa0\xc0\xaa\xfb\xd7\xce\x10\xc2\xae\xc2\x70\xf8\x7c\x7b\x7c"
        "\xd0\x86\x83\x03\x50\x86\x3e\x87\xe6\x00\x94\x61\x28\x87\x43\xeb\x97"
        "\xd7\xf5\xe6\xa2\xca\xeb\xbc\x4e\x43\x73\x73\xd5\x7b\x20\x80\x45\xf9"
        "\xfd\xc2\xdb\x9c\xcd\xaf\x2c\xac\x4c\x6b\x69\xe3\xbd\xe5\x7f\xed\xa9"
        "\x7a\xe7\xf9\x61\x15\xac\xf7\xf6\xbf\xac\xfc\x27\x2a\xcc\xff\xe1\x4b"
        "\x8b\x61\x95\xf5\x1f\x80\xfc\x7f\x7d\xce\x1e\x87\xd5\x73\xb7\x6e\x4d"
        "\xa9\x5e\xe9\x7b\xb4\x29\xc6\xf3\xfb\x08\xf9\xf3\x4b\xdd\xbf\x7f\xf9"
        "\x9d\x8e\xf6\xb1\xf9\xfd\x88\x46\x8f\xe5\xec\x76\x1f\x61\x58\xee\x2f"
        "\x74\x2b\xe7\xd8\x3a\x97\xa3\x5f\xdd\xca\x9f\x6f\x17\x77\xab\x2f\xc7"
        "\x30\xad\x87\xaf\x64\xe9\xc5\xef\x4f\xfe\x3f\x1d\x96\xff\x31\xd0\xd9"
        "\xbf\xf3\xeb\xff\x86\xb5\x18\x2e\xff\x20\xad\xf0\xea\xcb\x62\x18\xf6"
        "\xa1\x7d\x3b\x6a\xac\x64\x59\xcd\xea\x76\x3d\xc0\x80\xcb\x9f\x9b\x6b"
        "\xa6\xfb\xa3\x51\xfe\x5c\x5f\x9e\xbe\xa1\x24\x7d\xb2\x24\x7d\xaa\x24"
        "\xfd\x9e\x92\xf4\x8d\x25\xe9\x30\xca\x7e\xfb\xfd\x9f\x84\xd7\x6a\x4b"
        "\xe7\xf9\xf9\x39\xfd\x72\xaf\x87\xa7\xeb\x6c\xf7\xc6\xf0\x23\xcb\x2c"
        "\x4f\x7e\x3d\x72\xb9\xf9\xe7\xcf\xfd\x2e\xd7\x4a\xf3\xcf\x9f\x27\x86"
        "\x41\xf6\xfb\xe3\xcf\x9e\xfc\xc2\xf3\xcf\x5d\xd9\x72\xfd\xad\x07\x0f"
        "\x85\x5a\x6b\xfb\xbf\x19\xb7\xf7\x74\xba\x31\x1d\xbf\x5b\x17\xe3\x04"
        "\xe9\x7a\x61\x7e\x5d\xbd\xf5\xec\xff\x74\x7b\x3e\xf5\x2e\xd3\xdd\x97"
        "\x95\xe7\xde\x0e\xd3\x2f\x7c\xde\xda\x3e\x5d\x6d\xeb\xd2\x72\x42\x61"
        "\x3f\x73\x5b\x39\x66\xda\xe7\xdb\xdc\x6d\xba\x1d\xed\xd3\x4d\x67\xd3"
        "\x4d\xc5\x61\x32\x2b\x6f\x7e\x7c\x72\x4f\x36\x5f\x3a\xfe\x48\xfb\xd5"
        "\xb4\xbe\xc6\xb3\xfa\x36\xb2\x7a\x4c\x64\xe5\x48\xfb\x95\x2d\x31\xcc"
        "\xcb\x01\xfd\x48\xdb\x63\x97\xe7\xff\x5b\x3f\x6e\x33\xa1\x51\x7b\xe1"
        "\xd4\xe9\x93\x4f\xc6\x78\xda\x4e\xff\x38\xd6\xd8\x70\x6b\xfc\xde\xf5"
        "\x2d\x36\xb0\x0a\x7a\x7d\xff\x67\x26\xb4\xbf\xff\xb3\xa9\x35\xbe\x51"
        "\x2f\xee\x17\x36\x2f\x8d\xaf\x2d\xee\x17\xde\x8e\xcb\x6b\x1f\x3f\xd7"
        "\xca\xa7\x7d\xfc\xbe\x18\x4f\xbf\x73\xdf\x1a\x9b\x5a\x18\x3f\x7b\xe2"
        "\xbb\xa7\x9f\x5f\xfd\xea\xc3\x48\x7b\xe9\xc7\x2f\x7f\xfb\xf8\xe9\xd3"
        "\x27\xbf\xe7\x43\xdf\x1f\xbe\xba\xa2\xd9\x5f\xad\xa2\xcc\xe9\xb4\xa5"
        "\xea\x55\xe7\xc3\xc0\x7e\xa8\x78\xc7\x04\xac\xb9\x3d\xaf\x2e\x1e\x04"
        "\x3c\x71\xea\x3b\xc7\x5f\x3c\xf9\xe2\xc9\x33\xfb\xf6\xef\xdf\x37\x37"
        "\xb7\xff\x8b\xfb\xe6\xf7\x2c\x1c\xd7\xef\x29\x1e\xdd\x17\x9d\xad\xa0"
        "\xb4\xc0\x6a\x5a\xfa\xd1\xaf\xba\x24\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x40\xaf\x7e\x78\xf4\xc8\x95\xf7\x2e\x7d\xfe\xfd\xc5\xf7\xff\x97"
        "\xde\xff\x4b\xef\xff\xa7\x27\x7f\x17\xdf\xff\x5f\x6a\xeb\xa2\x5e\x18"
        "\x1f\x3a\xb4\x8e\x9b\xde\x03\xdc\xd2\x21\x7d\x61\x9a\xac\x81\xd5\x89"
        "\x6c\xba\x46\x1c\x3e\x9a\x95\x77\x6b\x96\xcf\xb6\x6c\xbe\x8f\xc5\xb0"
        "\xd5\x8f\x5f\x7c\xff\x3f\x65\x97\xb7\xeb\x9a\xca\x73\x7f\x36\xbe\xd1"
        "\x25\x9a\x35\x27\x70\x5b\x7b\x29\x13\x59\x1b\x24\x79\x7f\x81\x9f\x8c"
        "\xe1\xf9\x18\xfe\x2a\x40\x85\x6a\x53\x9d\x47\xc7\xb0\xac\x7d\xeb\xb4"
        "\xad\xa7\xf6\x29\x0a\xed\x52\x34\xb5\x0f\x3c\x3c\xd2\xff\x2d\x6d\x0d"
        "\xa9\x1d\x93\xf4\xfe\x77\xc7\x76\x9d\x0a\xff\xec\x2d\xeb\x50\x46\x56"
        "\xdf\x7a\xbc\x4e\x58\x75\x1d\x81\xce\xfe\x31\x52\xed\x7f\xff\x73\xa9"
        "\xe2\x95\x97\xc5\xd0\x7d\x18\x5f\xdf\xfc\x7e\x36\xfc\xdb\xc4\xb1\x3e"
        "\xcb\xdf\xec\x7a\x94\xde\x6b\x0f\x36\x00\xab\xa3\xea\xfe\x3f\xd3\x75"
        "\xcf\x14\x9e\xf9\xc3\xd7\x26\x6f\x0d\x69\xb2\x6b\x4f\xb5\xef\x2f\xf3"
        "\xf6\x4b\x61\x39\xfe\xfc\x5e\x7b\x7c\xd0\xfb\x9f\x5c\xeb\xfc\xf3\x7e"
        "\xfb\xd6\x3b\xff\xaa\xeb\xbf\xde\xfd\x7f\xb6\xfa\xbf\xeb\x79\xff\x57"
        "\x6f\x9f\xa1\x4f\xff\xf9\xf9\xd5\xf7\x8b\x4b\xd9\xde\x6b\xfe\x79\xfd"
        "\x53\x3b\xd0\x5b\x97\x97\xff\xf5\x98\x7f\xaa\xcd\xa3\xa1\xb7\xfc\x9b"
        "\xbf\xcc\xf2\xcf\x6f\x08\xf5\xe8\xbf\x59\xfe\xf7\xf4\x98\xff\x6d\xf5"
        "\xdf\xd1\x5f\xfe\xff\x8b\xf9\xa7\xd5\xf6\xd8\x43\xbd\xe6\xbf\x58\xe2"
        "\x5a\xbd\xbd\x1c\xf9\x75\xe3\x74\xff\x2f\xbf\x6e\x9c\xdc\xc8\xea\x9f"
        "\xda\xf6\xbc\x43\xfe\xdf\x78\xb9\x53\xfd\xfb\xdc\x0c\x6f\xc6\xfc\x61"
        "\x94\x0d\x4b\x3f\xb3\xcb\x95\x1d\x47\xb4\x0e\xda\x7b\xec\xff\xb7\xd9"
        "\xeb\xef\xff\x4a\xfb\xff\x6d\x15\x36\xdb\xad\xe5\xcf\x61\x7c\x2e\xc6"
        "\xd3\x8e\x38\x3d\xe7\x90\xf7\x77\xb2\xdc\xe3\x97\xf4\x7c\x45\xfa\x1d"
        "\xd8\x96\x2d\xbf\x56\xf2\xfb\xd6\x4f\xff\xbf\x83\xd4\xf9\xd2\xa8\xf7"
        "\xff\xfb\xa5\x18\x96\xf5\x87\x9d\xfa\xff\x4d\xdb\xe3\x74\xfc\xc9\x2f"
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        "\x43\x9f\x43\x73\xac\x8f\xf9\x5a\xfd\xc4\x55\x5c\xfe\x66\xb3\xb9\xb6"
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        "\xd5\xeb\xbf\x4c\xde\xff\x6f\x7e\x0c\x9f\xf7\xff\x9b\xa7\xe7\xfd\xff"
        "\xe6\xe9\x79\xff\xbf\x79\xfa\x54\xfc\x0f\x75\x4b\xcf\xfb\xff\xcd\xd7"
        "\x67\xde\xff\x6f\x9e\x7e\x7f\xb6\xdc\xbc\x7f\xe0\x99\x92\xf4\x8f\x97"
        "\xa4\x6f\xef\x9c\xde\x3a\x6d\x7f\xa0\x64\xfe\x1d\x25\xe9\x9f\x28\x49"
        "\xdf\xdd\x4a\x3f\xd8\x36\x45\x4a\x7f\xb0\x64\xfe\x9d\xdd\xd2\x63\x0d"
        "\xee\x2b\x99\xff\xa1\x92\xf4\x87\x4b\xd2\x3f\x55\x92\xfe\xc8\x1d\xd2"
        "\x1f\xdf\x14\xc2\x63\x85\xf4\x62\x1f\xd0\x69\xfe\x4f\x97\x2c\xff\x6e"
        "\x97\xde\x47\x19\xd5\xfa\xc3\x28\xcb\xdf\xcf\xf3\xfd\x87\xd1\x91\xee"
        "\xff\x74\xfb\xfe\x6f\x2d\x49\x07\x86\xd7\x4f\xdf\xda\x7b\xf8\xb9\xdf"
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        "\xf9\xd3\x8f\x62\x3c\xbf\xef\x1d\x0a\xf1\x5b\x69\x97\x62\xfc\xaf\x59"
        "\xfa\xa0\x5f\xef\x80\x51\x92\xb7\x9f\x91\xff\xbe\x3f\x5a\x92\x0e\x0c"
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        "\xdb\x71\x3e\xc3\xe5\x33\x31\xfc\x6c\x0c\x1f\x8f\xe1\x13\x31\x9c\x8d"
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        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\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\xca\xd4\x17"
        "\xfe\xce\xcf\xcf\xd4\x42\xb8\xf0\xce\x1b\x47\x9e\x3d\x76\x6a\xcf\xad"
        "\x31\x07\x5b\x53\x4c\x2f\xfc\x1d\x2f\xc4\x1a\xad\xf9\x42\x78\x32\x86"
        "\x63\x31\xfc\x45\xfc\x70\xe3\xc3\x57\x4e\x14\xc3\x9b\x31\xac\x85\xb9"
        "\x50\x0b\xb5\xd6\xf8\xf0\xcc\xb5\x56\x4e\x1b\x43\x08\x67\xc3\xae\x70"
        "\x31\x4c\x87\xed\x17\xae\xbc\xfe\xee\xdc\xd3\xc7\xce\x1d\x3d\xbf\xfb"
        "\xf2\x9b\x07\xae\xae\xdd\x1a\x00\x00\x00\x80\xbb\xdf\xff\x03\x00\x00"
        "\xff\xff\x28\xf7\x12\x15",
        2777);
    syz_mount_image(/*fs=*/0x20000080, /*dir=*/0x20000300, /*flags=*/0,
                    /*opts=*/0x20000100, /*chdir=*/1, /*size=*/0xad9,
                    /*img=*/0x20000340);
    break;
  case 1:
    memcpy((void*)0x20000300, "./bus\000", 6);
    syscall(__NR_mkdir, /*path=*/0x20000300ul, /*mode=*/0ul);
    break;
  case 2:
    memcpy((void*)0x20000040, ".\000", 2);
    res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000040ul,
                  /*flags=*/0, /*mode=*/0);
    if (res != -1)
      r[0] = res;
    break;
  case 3:
    memcpy((void*)0x20000200, "./bus/file0\000", 12);
    syscall(__NR_mkdirat, /*fd=*/r[0], /*path=*/0x20000200ul, /*mode=*/0ul);
    break;
  case 4:
    memcpy((void*)0x20000000, ".\000", 2);
    res = syscall(__NR_fspick, /*dfd=*/0xffffff9c, /*path=*/0x20000000ul,
                  /*flags=*/0ul);
    if (res != -1)
      r[1] = res;
    break;
  case 5:
    syscall(__NR_fsconfig, /*fd=*/r[1], /*cmd=*/7ul, /*key=*/0ul, /*value=*/0ul,
            /*aux=*/0ul);
    break;
  case 6:
    memcpy((void*)0x20000240, "./bus/file0\000", 12);
    memcpy((void*)0x200001c0, "./file0\000", 8);
    syscall(__NR_renameat2, /*oldfd=*/r[0], /*old=*/0x20000240ul,
            /*newfd=*/r[0], /*new=*/0x200001c0ul, /*flags=*/0ul);
    break;
  case 7:
    syscall(__NR_chdir, /*dir=*/0ul);
    break;
  case 8:
    syscall(__NR_creat, /*file=*/0ul, /*mode=*/0ul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  const char* reason;
  (void)reason;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      loop();
    }
  }
  sleep(1000000);
  return 0;
}