// https://syzkaller.appspot.com/bug?id=dc0f85f2a5405b2291d61299d25bf5ff7d24caa0
// 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 __thread int clone_ongoing;
static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) {
    exit(sig);
  }
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0;
  int valid = addr < prog_start || addr > prog_end;
  if (skip && valid) {
    _longjmp(segv_env, 1);
  }
  exit(sig);
}

static void install_segv_handler(void)
{
  struct sigaction sa;
  memset(&sa, 0, sizeof(sa));
  sa.sa_handler = SIG_IGN;
  syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8);
  syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8);
  memset(&sa, 0, sizeof(sa));
  sa.sa_sigaction = segv_handler;
  sa.sa_flags = SA_NODEFER | SA_SIGINFO;
  sigaction(SIGSEGV, &sa, NULL);
  sigaction(SIGBUS, &sa, NULL);
}

#define NONFAILING(...)                                                        \
  ({                                                                           \
    int ok = 1;                                                                \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    if (_setjmp(segv_env) == 0) {                                              \
      __VA_ARGS__;                                                             \
    } else                                                                     \
      ok = 0;                                                                  \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    ok;                                                                        \
  })

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 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);
}

#define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off))
#define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len)               \
  *(type*)(addr) =                                                             \
      htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) |           \
            (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len))))

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;
}

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");
}

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 < 2; 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++) {
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      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;
    }
  }
}

void execute_call(int call)
{
  switch (call) {
  case 0:
    NONFAILING(memcpy((void*)0x20000000, "nilfs2\000", 7));
    NONFAILING(memcpy((void*)0x20000040, "./file0\000", 8));
    NONFAILING(*(uint8_t*)0x20001bc0 = 0);
    NONFAILING(sprintf((char*)0x20001bc1, "%020llu", (long long)-1));
    NONFAILING(memcpy(
        (void*)0x20000cc0,
        "\x78\x9c\xec\xdd\x4d\x8c\x1b\x57\xe1\x00\xf0\x67\xef\x7a\x93\x4d\xd2"
        "\x7f\x9c\xfe\x13\xba\x24\xa1\x4d\xf9\x68\xcb\x47\x77\x9b\xcd\x12\x3e"
        "\x22\x68\xaa\xe6\x42\xd4\x54\x5c\x50\xa5\x8a\x4b\x94\xa6\x25\x22\x0d"
        "\x88\x54\x82\x56\x95\x48\x72\xe2\x46\xab\x2a\x5c\xa1\x88\x53\x39\x54"
        "\x80\x90\xda\x0b\x8a\x7a\xe2\x52\x89\x46\xe2\xd2\x53\xe1\xc0\x81\x28"
        "\x48\x95\x38\x40\x21\x31\x5a\xfb\x3d\xef\xf8\xad\x9d\xb1\x37\x9b\xb5"
        "\xbd\xfe\xfd\xa4\xb7\xcf\x6f\xde\xd8\xef\xcd\xec\xcc\x78\x3c\x33\xef"
        "\xbd\x00\x4c\xac\x6a\xf3\xef\xd2\xd2\x5c\x25\x84\xcb\x6f\xbf\x76\xec"
        "\xef\x0f\xfc\x6d\x76\x79\xca\xa3\xed\x39\xea\xcd\xbf\xd3\x85\x54\x2d"
        "\x84\x50\x89\xe9\xe9\xec\xf3\x3e\x98\x6a\xc5\x37\x3e\x7c\xf9\x54\xb7"
        "\xb8\x12\x16\x9b\x7f\x53\x3a\x3c\x79\xbd\xfd\xde\xed\x21\x84\x0b\xe1"
        "\x40\xb8\x12\xea\x61\xef\xe5\xab\xaf\xbe\xbb\xf8\xc4\x89\x8b\xc7\x2f"
        "\xdd\xff\xde\x1b\x47\xae\xdd\x99\xa5\x07\x00\x80\xc9\xf2\xcd\x2b\x47"
        "\x96\xf6\xfc\xe5\x4f\xfb\x76\x7d\xf4\xe6\xbd\x47\xc3\x96\xf6\xf4\x74"
        "\x7e\x5e\x8f\xe9\x1d\xf1\xbc\xff\x68\x3c\xf1\x4f\xe7\xff\xd5\xd0\x99"
        "\xae\x14\x42\xd1\x4c\x36\xdf\x74\x0c\xd5\x6c\xbe\xa9\x2e\xf3\x15\xcb"
        "\xa9\x65\xf3\x4d\xf7\x28\x7f\x26\xfb\xdc\x5a\x3b\x7f\x5f\xc7\x7c\x5b"
        "\x4a\xca\x9f\x2a\x4c\xeb\xb6\xdc\x30\xce\xd2\x76\x5c\x0f\x95\xea\x7c"
        "\x47\xba\x5a\x9d\x9f\x6f\xfd\x26\x0f\xcd\xdf\xf5\x33\x95\xf9\x73\x67"
        "\xce\x3e\x7b\x7e\x48\x15\x05\xd6\xdd\x3f\xef\x0b\x21\x1c\xe8\x1d\xbe"
        "\x75\x8b\xbc\x49\x0e\x8d\x46\xe3\xc7\xcd\x15\x38\x02\x75\x11\x84\xb5"
        "\x86\xc6\xce\x61\x1f\x81\x00\x5a\xf2\xfb\x85\xab\x5c\xc8\xaf\x2c\xdc"
        "\x9e\xf6\xa7\x4d\xf7\x57\xfe\xf5\xc7\xaa\xdd\xdf\x0f\xeb\x60\xa3\xb7"
        "\x7f\xe5\x8f\x57\xf9\xbf\xba\xe8\x88\xc3\xfa\xd9\xac\x5b\x53\x5a\xae"
        "\xb4\x1f\xed\x88\xe9\xfc\x3e\x42\xfe\xfc\xd2\xa0\xfb\x7f\xfa\xbc\xfc"
        "\x7e\x44\xad\xcf\x7a\xf6\xba\x8f\x30\x2e\xf7\x17\x7a\xd5\x73\x6a\x83"
        "\xeb\xb1\x56\xbd\xea\x9f\x6f\x17\x9b\xd5\xd7\x62\x9c\xd6\xc3\xd7\xb3"
        "\xfc\xe2\xfe\x93\xff\x4f\xc7\xe5\x7f\x0c\x74\xf7\xaf\x92\xeb\xff\xeb"
        "\x16\x5e\x9f\x1d\xfa\xb5\xce\xe5\x70\x60\x04\xea\xb0\xa9\x43\x6d\x04"
        "\xea\x20\xf4\x1d\x1a\xc3\x3e\x00\x01\x23\x6b\xe5\xb9\xb9\x96\x46\x94"
        "\xf2\xf3\xe7\xfa\xf2\xfc\x2d\x25\xf9\x5b\x4b\xf2\x67\x4b\xf2\xb7\x95"
        "\xe4\x6f\x2f\xc9\x87\x49\xf6\xbb\x17\x7e\x1a\x5e\xa9\xac\xfc\xce\xcf"
        "\x7f\xd3\x0f\x7a\x3d\x2c\x5d\x67\xbb\x2b\xc6\xff\x37\x60\x7d\xf2\xeb"
        "\x91\x83\x96\x9f\x3f\xf7\x3b\xa8\xd6\xa7\xad\x7e\x0e\xba\xdf\xf2\xf3"
        "\xe7\x89\x61\x94\xbd\x75\xf2\xa9\xd3\x5f\x7e\xe6\xe9\xab\xad\xe7\xff"
        "\x2b\xed\xfd\xef\x66\xdc\xde\x0f\xc4\x74\x3d\xee\x5b\x57\xe2\x0c\xe9"
        "\x7a\x61\x7e\x5d\xbd\xfd\xec\x7f\xbd\xb3\x9c\x6a\x8f\xf9\xee\xce\xea"
        "\x73\xd7\xaa\xf9\x1b\xad\x12\x77\x77\xce\x57\xd9\xbd\xf2\x39\xa1\x70"
        "\x9c\x59\x55\x8f\xb9\xce\xf7\xed\xec\x35\xdf\xfe\xce\xf9\xea\xd9\x7c"
        "\xb3\x31\x6c\xcd\xea\x9b\x9f\x9f\x6c\xcb\xde\x97\xce\x3f\xd2\x71\x35"
        "\xad\xaf\xe9\x6c\x79\x6b\xd9\x72\xcc\x64\xf5\x48\xc7\x95\x5d\x31\xce"
        "\xeb\x01\x6b\x91\xb6\xc7\x5e\xcf\xff\xa7\xed\x73\x2e\xd4\x2a\xcf\x9e"
        "\x39\x7b\xfa\x91\x98\x4e\xdb\xe9\x1f\xa7\x6a\x5b\x96\xa7\x1f\x2c\x7e"
        "\xe8\xaf\xbb\x16\x35\x7f\x27\xea\x0f\xac\x5d\xbf\xed\x7f\xe6\x42\x67"
        "\xfb\x9f\x1d\xed\xe9\xb5\x6a\xf1\xb8\xb0\x73\x65\x7a\xa5\x78\x5c\xa8"
        "\x67\xd3\x17\x5b\xc9\xf6\x6d\xf2\x34\xfd\x50\x4c\xa7\xef\xb9\xef\x4c"
        "\xcd\x36\xa7\xcf\x9f\xfa\xde\xd9\x67\xd6\x7b\xe1\x61\xc2\x9d\x7f\xf1"
        "\xa5\xef\x9e\x3c\x7b\xf6\xf4\x0f\xbc\x48\x2f\x66\x87\xbe\x5a\x66\x86"
        "\xbf\x12\x3a\x5f\x2c\xff\xbc\x19\x81\x6a\x78\xb1\x81\x2f\xca\x8e\x1c"
        "\x9b\xf5\xc9\x41\x98\x1c\x0b\x2f\x3c\xff\xfd\x85\xf3\x2f\xbe\xf4\xf0"
        "\x99\xe7\x4f\x3e\x77\xfa\xb9\xd3\xe7\x0e\x1d\x3e\x7c\x68\x71\xf1\xf0"
        "\x57\x0e\x2d\x2d\x34\xcf\xeb\x17\x8a\x67\xf7\xc0\x66\x52\x38\xc7\x03"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc6\xc4\x0f\x8f\x1f\xbb\xfa\xe7"
        "\x77\xbe\xf4\x7e\xab\xfd\xff\x4a\xfb\xbf\xd4\xfe\x3f\x3d\xf9\x9b\xda"
        "\xff\xff\x24\x6b\xff\x9f\xb7\x93\x4f\xad\x02\x52\x3b\xc0\x5d\x5d\xf2"
        "\x9b\xe3\xee\xbd\xd5\x59\x8f\x99\x6c\xbe\x5a\x0c\xff\x9f\xd5\x77\x77"
        "\x56\xce\x9e\xec\x7d\x1f\x8b\x71\x7b\x1c\xbf\xd8\xfe\x3f\xb5\xb7\xcf"
        "\xfb\x75\x4d\xf5\xb9\x27\x9b\x9e\xf7\xdf\x9b\xe6\xcb\xba\x13\x58\xd5"
        "\x5f\xca\x4c\xd6\x07\x49\x7b\xbc\xc0\xd8\x60\xff\x93\x31\x7d\x29\xc6"
        "\xbf\x0c\x30\x44\x95\xd9\xee\x93\x63\x5c\xd6\xbf\x75\xda\xd6\x53\xff"
        "\x14\xfa\xa5\x18\x4f\xe9\xff\x96\xb6\x86\xd4\x8f\x49\x6a\xff\xdd\xab"
        "\x5f\xa7\x74\xfc\xdf\xb5\x01\x75\x64\xfd\x6d\x48\xeb\xd1\x1e\xc6\xa5"
        "\x8f\x7b\xd8\xac\xfe\xb1\x51\xfd\x7f\xaf\x39\x14\xce\xc4\x87\x5e\x97"
        "\x5b\x86\x46\x63\xf8\x75\xb8\xfd\x30\xfa\xeb\x79\x75\xd8\x3a\x02\x75"
        "\x18\xd3\xd0\x68\x18\xc5\x03\x18\x0d\x83\xf4\xb7\xbb\x1e\x63\x34\xe5"
        "\xe3\x7f\xa6\xeb\x9e\x29\x3e\xf7\x87\x6f\x6c\x5d\x0e\x69\xb6\xeb\x8f"
        "\x75\x1e\x2f\xf3\xfe\x4b\xe1\x76\x8c\xfa\xf8\x93\xca\xdf\x5c\xe3\x7f"
        "\xb6\xaf\xc1\xf4\x75\xfc\xeb\xd2\xbb\x7a\x47\x3f\xcf\xfd\x8f\xae\xf0"
        "\xef\x9f\x5f\x7b\xbf\x50\x6c\xd8\xdb\xef\xf1\x37\x5f\xfe\xd4\x0f\xf4"
        "\xee\xf2\x32\x8b\x3e\x8a\xe5\xa7\xe5\x7f\x30\xf4\x57\x7e\xe3\xf5\xac"
        "\xfc\xfc\x86\xd0\xad\x14\xde\xfa\x9f\xac\xfc\x6d\x7d\x96\xbf\x6a\xf9"
        "\xf7\x0f\x50\x7e\xc1\x7f\x63\xf9\x69\xb5\x3d\xf4\xa9\x7e\xcb\x6f\xd5"
        "\xb8\x52\xed\xac\x47\x7e\xdd\x38\xdd\xff\xcb\xaf\x1b\x27\x37\xb2\xe5"
        "\x4f\x7d\x7b\x0e\xbc\xfc\x6b\x3c\x09\xb8\x19\xcb\x87\x49\xd6\xfb\x1a"
        "\x7c\xbf\x23\xd8\x8e\xa6\x71\x19\xff\xb7\x97\xfc\x39\x8c\x2f\xc6\x74"
        "\x3a\x10\xa6\xe7\x1c\xf2\x6f\xe4\x41\xeb\x9f\x9e\xaf\x48\xdf\x03\x7b"
        "\xb2\xcf\xaf\x94\x7c\xbf\x8d\xfb\x3d\x9c\x49\x1f\xff\xf7\xab\x31\x2e"
        "\xdb\x1f\xd2\xf8\xbf\x69\x7b\xac\x77\x49\x57\x0b\xe9\x5a\x97\x75\x3b"
        "\xee\xdb\x0a\x6c\x36\x1f\x8c\xfc\xfd\xbf\x31\x0b\x17\x46\xa0\x0e\xc2"
        "\xca\x17\xda\xb0\xeb\xd1\x11\x46\x63\x0c\xec\x62\x68\x34\x1a\x43\xed"
        "\xc8\x5b\x2f\xe2\xc3\x35\xec\xf5\x3f\xec\xbb\xcf\xc3\x2e\x7f\xd8\xeb"
        "\xbf\x4c\x3e\xfe\x6f\x7e\x0e\x9f\x8f\xff\x5b\xcd\x7e\x40\xe4\xe3\xff"
        "\xe6\xef\xcf\xc7\xff\xcd\xf3\xf3\xf1\xf5\xf2\xfc\x7c\xfc\xdf\x7c\x7d"
        "\xe6\xe3\xff\xe6\xf9\xf7\x64\x9f\x9b\x5f\xc1\x9e\x2b\xc9\xff\x78\x49"
        "\xfe\xde\x92\xfc\x7d\x2b\xf9\xb3\xdd\xf2\xf7\x97\xbc\xff\x13\x25\xf9"
        "\xa1\x24\xff\xde\x92\xfc\xfb\x4a\xf2\xef\x2e\xc9\x9f\x2a\xc9\xff\x74"
        "\x49\xfe\x67\x4a\xf2\x1f\x28\xc9\x7f\xa8\x24\xff\xb3\x25\xf9\x9b\x5d"
        "\xb3\x3d\x4a\x61\xa7\x9a\xb4\xe5\x87\x49\x96\xb7\xcf\xb3\xff\xc3\xe4"
        "\x48\xf7\x7f\x7a\xed\xff\xbb\x4b\xf2\x81\xf1\xf5\xb3\x37\x0f\x3e\xfe"
        "\xf4\x6f\xbf\x5d\x6f\xb5\xff\x9f\x69\xff\x5e\x4b\xf7\xf1\x8e\xc6\x74"
        "\x2d\xfe\x76\xfe\x51\x4c\xe7\xf7\xbd\x43\x21\xbd\x9c\xf7\x4e\x4c\xff"
        "\x35\xcb\x1f\xf5\xeb\x1d\x30\x49\xf2\xfe\x33\xf2\xef\xf7\x07\x4b\xf2"
        "\x81\xf1\x95\x9e\xf3\xb2\x7f\xc3\x04\xaa\x74\xef\xb1\x27\xbf\xdf\xd6"
        "\xab\xdf\xaa\x5e\xe7\xf9\x8c\x97\xcf\xc5\xf8\xf3\x31\xfe\x42\x8c\x1f"
        "\x8e\xf1\x7c\x8c\x17\x62\x7c\x30\xc6\x8b\x1b\x54\x3f\xee\x8c\xc7\x7f"
        "\xf3\xfb\x23\xaf\x54\x56\x7e\xef\xef\xcc\xf2\xfb\x7d\x9e\x3c\x6f\x0f"
        "\x94\xf7\x13\x75\xa8\xcf\xfa\xe4\xd7\x07\x06\x7d\x9e\x3d\xef\xc7\x6f"
        "\x50\xb7\x5b\xfe\x20\xcd\xc1\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x46\x41"
        "\xb5\xf9\x77\x69\x69\xae\x12\xc2\xe5\xb7\x5f\x3b\xf6\xd4\x89\x33\x0b"
        "\xcb\x53\x1e\x6d\xcf\x51\x6f\xfe\x9d\x2e\xa4\x6a\xed\xf7\x85\xf0\x48"
        "\x8c\xa7\x62\xfc\x8b\xf8\xe2\xc6\x87\x2f\x9f\x2a\xc6\x37\x63\x5c\x09"
        "\x8b\xa1\x12\x2a\xed\xe9\xe1\xc9\xeb\xed\x92\xb6\x87\x10\x2e\x84\x03"
        "\xe1\x4a\xa8\x87\xbd\x97\xaf\xbe\xfa\xee\xe2\x13\x27\x2e\x1e\xbf\x74"
        "\xff\x7b\x6f\x1c\xb9\x76\xe7\xd6\x00\x00\x00\x00\x6c\x7e\xff\x0b\x00"
        "\x00\xff\xff\xaf\x12\x18\xfa",
        2727));
    NONFAILING(syz_mount_image(
        /*fs=*/0x20000000, /*dir=*/0x20000040,
        /*flags=MS_LAZYTIME|MS_STRICTATIME|MS_RELATIME|MS_NODIRATIME|MS_NOATIME*/
        0x3200c00, /*opts=*/0x20001bc0, /*chdir=*/3, /*size=*/0xaa7,
        /*img=*/0x20000cc0));
    break;
  case 1:
    NONFAILING(*(uint32_t*)0x20000040 = 2);
    NONFAILING(*(uint32_t*)0x20000044 = 0x80);
    NONFAILING(*(uint8_t*)0x20000048 = 0xe6);
    NONFAILING(*(uint8_t*)0x20000049 = 9);
    NONFAILING(*(uint8_t*)0x2000004a = 0);
    NONFAILING(*(uint8_t*)0x2000004b = 0);
    NONFAILING(*(uint32_t*)0x2000004c = 0);
    NONFAILING(*(uint64_t*)0x20000050 = 3);
    NONFAILING(*(uint64_t*)0x20000058 = 0x28000);
    NONFAILING(*(uint64_t*)0x20000060 = 0);
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 0, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 1, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 2, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 3, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 4, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 5, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 6, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 7, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 8, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 9, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 10, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 11, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 12, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 13, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 14, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 15, 2));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 17, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 18, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 19, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 20, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 21, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 22, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 23, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 24, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 25, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 26, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 27, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 28, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 29, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 30, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 31, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 32, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 33, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 34, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 35, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 36, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 37, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 38, 26));
    NONFAILING(*(uint32_t*)0x20000070 = 0);
    NONFAILING(*(uint32_t*)0x20000074 = 0);
    NONFAILING(*(uint64_t*)0x20000078 = 0);
    NONFAILING(*(uint64_t*)0x20000080 = 9);
    NONFAILING(*(uint64_t*)0x20000088 = 0x800);
    NONFAILING(*(uint64_t*)0x20000090 = 9);
    NONFAILING(*(uint32_t*)0x20000098 = 0);
    NONFAILING(*(uint32_t*)0x2000009c = 0);
    NONFAILING(*(uint64_t*)0x200000a0 = 0);
    NONFAILING(*(uint32_t*)0x200000a8 = 0);
    NONFAILING(*(uint16_t*)0x200000ac = 0);
    NONFAILING(*(uint16_t*)0x200000ae = 0);
    NONFAILING(*(uint32_t*)0x200000b0 = 0);
    NONFAILING(*(uint32_t*)0x200000b4 = 0);
    NONFAILING(*(uint64_t*)0x200000b8 = 0);
    syscall(__NR_perf_event_open, /*attr=*/0x20000040ul, /*pid=*/-1,
            /*cpu=*/0ul, /*group=*/-1, /*flags=*/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);
  setup_sysctl();
  const char* reason;
  (void)reason;
  install_segv_handler();
  for (procid = 0; procid < 6; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}