// https://syzkaller.appspot.com/bug?id=e9a01cfb81e140261f6dced1c3aaf62ad786eeb5
// 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);
}

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 < 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);
      if (call == 3)
        break;
      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;
    }
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    NONFAILING(memcpy((void*)0x20000040, "ext4\000", 5));
    NONFAILING(memcpy((void*)0x20000200, "./file1\000", 8));
    NONFAILING(*(uint8_t*)0x20000140 = 0);
    NONFAILING(memcpy(
        (void*)0x200008c0,
        "\x78\x9c\xec\xdd\xdf\x6b\x5b\x55\x1c\x00\xf0\xef\x4d\xdb\xad\xfb\xa1"
        "\xed\x60\x0c\xf5\x41\x0a\x7b\x70\x32\x97\xae\xad\x3f\x26\xf8\x30\x1f"
        "\x45\x87\x03\x7d\xd7\x90\x64\x65\x34\x5d\x46\x93\x8e\xb5\x0e\xdc\x1e"
        "\xdc\x8b\x2f\x32\x04\x11\x07\xa2\xef\xbe\xfb\x38\xfc\x07\xfc\x2b\x06"
        "\x3a\x18\x32\x8a\x3e\xec\x25\x72\xd3\x9b\x2e\x5b\x93\x36\xed\xd2\xb5"
        "\x5b\x3e\x1f\xb8\xed\x39\xf7\xde\xf4\x9c\x6f\xee\xfd\x9e\x9e\x9b\x9b"
        "\x90\x00\x06\xd6\x44\xfa\x23\x17\xf1\x6a\x44\x7c\x97\x44\x8c\xb5\x6d"
        "\x1b\x8e\x6c\xe3\xc4\xea\x7e\x2b\x0f\xae\x15\xd3\x25\x89\x46\xe3\xb3"
        "\x7f\x92\x48\xb2\x75\xad\xfd\x93\xec\xf7\xa1\xac\xf2\x4a\x44\xfc\xf1"
        "\x4d\xc4\xc9\xdc\xfa\x76\x6b\x4b\xcb\x73\x85\x4a\xa5\xbc\x90\xd5\x27"
        "\xeb\xf3\x97\x27\x6b\x4b\xcb\xa7\x2e\xce\x17\x66\xcb\xb3\xe5\x4b\xd3"
        "\x33\x33\x67\xde\x99\x99\x7e\xff\xbd\x77\xfb\x16\xeb\x9b\xe7\xff\xfb"
        "\xf1\xd3\x3b\x1f\x9d\xf9\xf6\xf8\xca\x0f\xbf\xdd\x3b\x72\x2b\x89\xb3"
        "\x71\x38\xdb\xd6\x1e\xc7\x53\xb8\xde\x5e\x99\x88\x89\xec\x39\x19\x89"
        "\xb3\x4f\xec\x38\xd5\x87\xc6\xf6\x92\x64\xb7\x3b\xc0\xb6\x0c\x65\x79"
        "\x3e\x12\xe9\x18\x30\x16\x43\x59\xd6\x77\xd4\x18\x7b\x96\x5d\x03\x76"
        "\xd8\xd7\x69\x5a\x03\x03\x2a\x91\xff\x30\xa0\x5a\xf3\x80\xd6\xb5\x7d"
        "\x9f\xae\x83\x9f\x1b\xf7\x3f\x5c\xbd\x00\x5a\x1f\xff\xf0\xea\x6b\x23"
        "\x31\xda\xbc\x36\x3a\xb8\x92\x3c\x76\x65\x94\x5e\xef\x8e\xf7\xa1\xfd"
        "\xb4\x8d\xdf\xff\xbe\x7d\x2b\x5d\xa2\x7f\xaf\x43\x00\x6c\xea\xfa\x8d"
        "\x88\x38\x3d\x3c\xbc\x7e\xfc\x4b\xb2\xf1\x6f\xfb\x4e\xf7\xb0\xcf\x93"
        "\x6d\x18\xff\xe0\xd9\xb9\x93\xce\x7f\xde\xea\x34\xff\xc9\xad\xcd\x7f"
        "\xa2\xc3\xfc\xe7\x50\x87\xdc\xdd\x8e\xcd\xf3\x3f\x77\xaf\x0f\xcd\x74"
        "\x95\xce\xff\x3e\xe8\x38\xff\x5d\xbb\x69\x35\x3e\x94\xd5\x5e\x6a\xce"
        "\xf9\x46\x92\x0b\x17\x2b\xe5\x74\x6c\x7b\x39\x22\x4e\xc4\xc8\xfe\xb4"
        "\xbe\xc1\xfd\x9c\x2f\x73\x2b\x77\x1b\xdd\x36\xb6\xcf\xff\xd2\x25\x6d"
        "\xbf\x35\x17\xcc\xfa\x71\x6f\x78\xff\xe3\x8f\x29\x15\xea\x85\xa7\x0a"
        "\xba\xcd\xfd\x1b\x11\xaf\x75\x9c\xff\x26\x6b\xc7\x3f\xe9\x70\xfc\xd3"
        "\xe7\xe3\x7c\x8f\x6d\x1c\x2b\xdf\x7e\xbd\xdb\xb6\xcd\xe3\xdf\x59\x8d"
        "\x5f\x22\xde\xe8\x78\xfc\x1f\xdd\xd1\x4a\x36\xbe\x3f\x39\xd9\x3c\x1f"
        "\x26\x5b\x67\xc5\x7a\xff\xde\x3c\xf6\x67\xb7\xf6\x77\x3b\xfe\xf4\xf8"
        "\x1f\xdc\x38\xfe\xf1\xa4\xfd\x7e\x6d\x6d\xeb\x6d\xfc\x3c\xfa\xb0\xdc"
        "\x6d\xdb\x76\xcf\xff\x7d\xc9\xe7\xcd\xf2\xbe\x6c\xdd\xd5\x42\xbd\xbe"
        "\x30\x15\xb1\x2f\xf9\x64\xfd\xfa\xe9\x47\x8f\x6d\xd5\x5b\xfb\xa7\xf1"
        "\x9f\x38\xbe\xf1\xf8\xd7\xe9\xfc\x3f\x90\x26\x76\x8f\xf1\xdf\x3c\x7a"
        "\xb3\x7d\xd7\xd1\xad\xc5\xbf\xb3\xd2\xf8\x4b\x5b\x3a\xfe\x5b\x2f\xdc"
        "\xfd\xf8\xab\x9f\xba\xb5\xdf\xdb\xf1\x7f\xbb\x59\x3a\x91\xad\xe9\x65"
        "\xfc\xeb\xb5\x83\x4f\xf3\xdc\x01\x00\x00\x00\x00\x00\xc0\x5e\x93\x8b"
        "\x88\xc3\x91\xe4\xf2\x6b\xe5\x5c\x2e\x9f\x5f\x7d\x7f\xc7\xd1\x38\x98"
        "\xab\x54\x6b\xf5\x93\x17\xaa\x8b\x97\x4a\xd1\xfc\xac\xec\x78\x8c\xe4"
        "\x5a\x77\xba\xc7\xda\xde\x0f\x31\x95\xbd\x1f\xb6\x55\x9f\x7e\xa2\x3e"
        "\x13\x11\x47\x22\xe2\xfb\xa1\x03\xcd\x7a\xbe\x58\xad\x94\x76\x3b\x78"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xd8\x23"
        "\x0e\x45\x8c\x76\xfa\xfc\x7f\xea\xaf\xa1\xdd\xee\x1d\xb0\xe3\x36\xf8"
        "\xca\x6f\xe0\x05\xd7\x3d\xff\xb3\x2d\xfd\xf8\xa6\x27\x60\x4f\xf2\xff"
        "\x1f\x06\x97\xfc\x87\xc1\x25\xff\x61\x70\xc9\x7f\x18\x5c\xf2\x1f\x06"
        "\x97\xfc\x87\xc1\x25\xff\x61\x70\x6d\x25\xff\x7f\x3d\xb7\x83\x1d\x01"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x80\x17\xc3\xf9\x73\xe7\xd2\xa5\xb1\xf2\xe0\x5a\x31\xad"
        "\x97\xae\x2c\x2d\xce\x55\xaf\x9c\x2a\x95\x6b\x73\xf9\xf9\xc5\x62\xbe"
        "\x58\x5d\xb8\x9c\x9f\xad\x56\x67\x2b\xe5\x7c\xb1\x3a\xbf\xd9\xdf\xab"
        "\x54\xab\x97\xa7\xa6\x63\xf1\xea\x64\xbd\x5c\xab\x4f\xd6\x96\x96\xbf"
        "\x98\xaf\x2e\x5e\x7a\xd8\x58\x55\x1e\x79\x26\x51\x01\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc0\xf3\xa5\xb6\xb4\x3c\x57"
        "\xa8\x54\xca\x0b\x0a\x0a\xdb\x2a\x0c\xef\x8d\x6e\x28\xf4\xb9\xb0\xdb"
        "\x23\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x3c\xf2\x7f\x00\x00\x00\xff\xff\xbe\x62\x3f\xb0",
        1376));
    NONFAILING(syz_mount_image(/*fs=*/0x20000040, /*dir=*/0x20000200,
                               /*flags=MS_RELATIME*/ 0x200000,
                               /*opts=*/0x20000140, /*chdir=*/0xfc,
                               /*size=*/0x560, /*img=*/0x200008c0));
    break;
  case 1:
    NONFAILING(memcpy((void*)0x20000080, "./file1\000", 8));
    res =
        syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000080ul,
                /*flags=O_SYNC|O_DIRECT|O_CREAT|O_RDWR*/ 0x105042, /*mode=*/0);
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x2000ul,
            /*prot=PROT_WRITE*/ 2ul, /*flags=MAP_FIXED|MAP_SHARED*/ 0x11ul,
            /*fd=*/r[0], /*offset=*/0ul);
    break;
  case 3:
    NONFAILING(*(uint32_t*)0x20006c00 = 8);
    NONFAILING(memcpy(
        (void*)0x20006c04,
        "\x9a\x6e\xb0\x13\x56\x12\xa7\x64\x14\x6e\x4c\x36\xe5\x86\x74\x63\x88"
        "\xf7\xe1\xb7\x16\x27\x99\x9a\x38\x14\x1a\xac\x95\x2f\xe3\xd7\xee\x26"
        "\x41\x62\x39\x8c\x1d\xdc\xbc\x93\x9d\x49\xe9\x58\xa0\x00\x49\x23\x71"
        "\x2b\x90\xa1\x71\xa5\x69\xdf\x61\x20\x18\x1c\xfb\x83\x6b\x20\x88\x05"
        "\x35\xec\xcc\x7a\xd4\xe8\x40\xb3\x68\xad\x8b\xf1\xd3\x3b\x5f\x93\x24"
        "\x90\x7b\x4a\xd0\xc6\x8f\x5a\x2f\x1b\xe0\xd1\x6e\xc1\x9c\xc1\x8c\x03"
        "\x36\x33\x2f\xb7\x32\x61\xd8\x15\xcc\x05\x01\x45\x2e\xdc\x95\xf4\xaa"
        "\xa1\xbc\x08\x22\x8c\x7f\xf5\x76\x98\x28\x64\x9b\x86\x92\x3e\xb2\x61"
        "\x4f\x7c\x6c\x54\x23\x17\x6c\xd3\xfe\x4d\x2c\x28\x81\xa2\xbd\x81\x4b"
        "\xee\x61\x0f\x8b\x81\x47\x50\xaa\x30\x30\x99\xad\xdf\x27\x91\x58\x2a"
        "\x30\xac\x77\x16\x54\x71\x05\x4c\x9f\x00\x0d\xbf\x8d\x69\xed\xdf\xdf"
        "\x97\x41\x32\xd2\x46\x8b\x5d\x31\x39\xc8\x75\xfb\xba\x8b\x11\x82\x3e"
        "\x1b\x38\xfc\x6c\xb0\x27\xb6\x5a\xfd\x80\xce\xd7\xc5\x36\x0a\xe0\xcd"
        "\x4c\x6c\x0b\x5b\x71\xc1\xc1\x23\x14\x3c\x6d\xfc\x66\x1d\x46\xc2\x06"
        "\x8d\xbf\xee\x05\xd1\x0d\x9d\x3e\x43\x9e\x5a\xde\x1b\x90\x70\x6f\x9c"
        "\xf6\x6c\x31\x86\xd9\x47\x9a\x71\xbe\xd6\x4b\xc0\xae\x9a\x58\xcd\x38"
        "\xc0\x89\xc8\xe3\xce\xa1\xaa\x9c\xbb\xf5\xc4\x1f\x59\x0d\x4f\xee\xd0"
        "\xfb\xb8\x72\x2d\xcd\x1b\x44\x25\xa6\x45\xa5\x93\x5a\xd6\xcf\x39\xda"
        "\x5a\x66\xb9\x2d\x25\xbe\x1c\xf2\x85\x33\xdd\x12\x5a\x37\x61\xc6\x55"
        "\x88\xd6\x8b\x9e\xcf\xef\x28\x08\xf5\xe6\x37\x33\x32\x18\xd1\xc0\x02"
        "\xb8\xc4\xaf\xab\xed\xad\xef\x58\xdf\xfe\x61\x3c\x52\x02\xd3\x81\xd0"
        "\x94\x66\xa7\x7f\x77\x55\x14\x1d\x60\x12\x69\xad\x25\x74\xcf\x4f\x14"
        "\x50\xd3\x52\x5d\xc5\xb7\x02\xee\xc6\xe8\x2d\xcd\x37\x2d\x54\xdd\x8e"
        "\xcb\x58\xe2\x7c\x92\xfe\xf2\xcc\x43\xb9\x36\x62\x50\x20\x02\xa2\x16"
        "\x0e\xa7\x13\xb2\xa7\xef\x0d\xe6\xa9\xaf\x34\xa6\x10\xa3\x2c\x70\xbc"
        "\xc7\x26\x6c\x0d\x25\x8c\x82\x37\xe1\xf7\xcc\x62\x9a\x42\x40\x43\x2b"
        "\xa1\x87\xce\xc4\xbb\xda\xdf\x3b\x7a\x49\xb2\x90\xb4\x85\xd9\x82\x02"
        "\x86\x5f\x79\x63\x8a\x41\x0e\x85\x79\x79\x74\xa4\xc1\x9f\x37\xd9\xf3"
        "\xd7\xa5\xcb\xed\x21\x3c\x97\xd1\x09\x2d\x22\x26\x69\x19\x5c\x08\xb1"
        "\x63\x39\x81\x38\x94\x08\xf3\x36\x82\x6b\x42\x8b\xf2\xcb\x18\xef\xd8"
        "\x51\x1f\xe2\x95\xb7\x29\xd6\x4c\x13\x66\xd0\xc7\xac\x31\x02\x7b\x03"
        "\x0f\x32\xe5\x1b\x99\xab\xa4\x86\xaf\x9b\xf9\xb4\xbf\x45\xa9\x7b\x88"
        "\xf3\x34\x0c\xe9\xbe\x15\x64\x48\x35\x56\x6f\xa9\x4f\xbf\x37\x4d\x23"
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        "\xe7\x8e\xfb\x6d\xc7\x76\xf4\xfe\xd0\x57\x34\x2c\xe2\xbb\xe3\x7c\x3f"
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        "\x4f\x67\x85\xd9\x7b\xf9\xf4\xd2\x4a\x99\x94\xf1\xf2\x06\x26\x6d\xbb"
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        "\xda\x47\x4d\x26\x00\xcf\x2d\x9e\x50\xf9\xa0\xa0\x94\x49\xc9\x92\x03"
        "\xc0\xf9\xe7\x2e\xf1\x52\x83\xd2\x08\x35\x04\xa0\xf3\x1a\x4f\x69\x69"
        "\x90\xff\x43\xa4\xb6\xcf\x0f\x90\x8f\x0c\x86\x98\xf9\x2a\x6f\x82\xf2"
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        "\xf9\x2f\xa7\x0d\xa6\x4c\xf1\xbd\x53\x73\x78\xc7\xe4\xe4\x87\xf3\x42"
        "\x6c\x21\x34\x77\x89\xa1\x52\xf1\x45\x56\x3c\x03\xf5\x2f\xdc\x31\x48"
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        "\x7f\xa9\x30\x77\x63\x5c\xc5\x25\x97\x3d\x57\x55\xf8\x0c\xf0\x44\x8d"
        "\xc9\x31\x97\x74\x16\xe6\xd7\xcc\x12\x63\x81\x1b\x9e\x3d\xfc\xad\x46"
        "\x17\xa0\x0e\xe9\x26\xf0\x05\x12\x44\xf9\xc7\x09\x83\x33\x7d\x12\x05"
        "\xd9\x79\x43\x1d\x91\x97\x53\x2e\x04\x5a\xa4\xd1\xe8\x5a\x3f\xd9\x97"
        "\xa0\xe6\xcc\xc2\x71\x0f\x68\x64\x6a\xeb\x09\x1d\xad\xb7\xff\xfd\xcb"
        "\x81\x81\x6e\xdb\x3f\xf0\x56\x5c\x11\x55\xfc\x8c\xfa\x59\x43\xfd\x9a"
        "\xb9\x03\xd0\x83\x23\x16\x0a\x03\x48\x0d\xc8\xcb\x59\x3a\x82\xbe\xa5"
        "\x47\xaa\x0d\x89\x64\xba\x57\x05\xad\xa2\xc9\xd3\x00\x21\x60\xa9\x1f"
        "\x9f\xa4\x72\x00\x6c\x0c\x9c\x9a\x6c\xad\x17\xd8\x61\x64\x97\xce\x9b"
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        "\xc0\xc3\x4b\x3e\xac\xb7\x93\xdf\x69\x6c\x87\x6f\x68\x0f\x23\x81\xa3"
        "\x92\x17\xa8\x3f\xbd\x31\x35\xbd\x74\xb0\x1c\xe0\x40\x49\xa6\xd7\x70"
        "\xb2\x81\xe3\x21\x83\xce\x7e\x63\xdb\x5b\x31\xef\x74\x3a\x66\x75\x68"
        "\x8c\x10\x81\x40\x07\x31\x5e\xfa\x7d\xa5\xb3\xe9\x2e\xba\x3e\x2e\x8d"
        "\x5d\xdb\xd2\x01\xcf\x76\xdc\xac\x45\xca\x06\xee\xa8\xfc\xf2\x63\xbf"
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        "\x54\x15\x89\x78\x8c\xbf\xc1\x47\x46\x3b\xc7\xe6\x70\x4f\x2d\xca\x3e"
        "\xc1\xa1\xa4\x46\xc7\x2f\x06\x0b\x86\x97\x1a\xca\xd6\xf8\x1a\xff\x43"
        "\xc4\xa5\x10\xe9\x4a\x09\xdb\xe4\xed\x4b\xf5\xdb\xc4\xed\xef\xa9\xf5"
        "\xd5\x26\x08\x7d\x53\xcb\x82\x20\x0f\xa5\xcf\x51\xdc\xdc\x8c\x4e\x93"
        "\x5d\xe7\xab\x77\x8c\xf8\xad\x26\x56\x37\x9a\x33\x4f\x27\x9b\x73\x1f"
        "\x8b\x40\x71\x30\xf6\x28\x8c\x37\x59\xc1\x90\x34\x29\x7c\xcd\x33\x62"
        "\x98\xf5\xcb\xf0\x01\x9f\x9a\x29\x07\x82\xad\x51\x04\x32\x56\x47\x3c"
        "\xa8\x8a\x21\x33\x52\xab\x2a\xb7\x60\x79\x36\xd6\x2f\xc8\x40\xeb\xfd"
        "\x68\xb4\x95\x95\xd7\x40\xa8\x85\xe6\x90\xda\x43\x66\x1e\x55\xab\xf3"
        "\x14\xf7\x95\x0d\x06\x69\x6b\x7e\xaa\x79\x1b\xd2\x19\xd3\x8b\x0e\x9a"
        "\xc9\x37\x45\x12\x95\xf6\x49\x54\xff\x3d\x2f\x1f\xc9\xbb\x88\x8d\x75"
        "\x37\xb9\xae\xd2\x39\xa7\xd2\xf3\x44\x46\x38\xb6\xa9\x27\xa1\x6c\x1f"
        "\xdf\xe0\xae\xda\x37\xd3\x16\xd0\xc7\x94\x33\x6f\x7e\xa7\x3f\x96\x19"
        "\x8f\x33\x1d\x09\x72\x00\xbc\xe5\x75\x3e\x88\x1a\x65\xfb\x2f\x7e\xea"
        "\x9b\x6b\x3d\x25\xc0\x1f\xe2\x48\xe2\x81\x2d\x7f\xc7\xf2\xdc\x4c\xee"
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        "\xcc\xa7\x07\xce\xce\xc8\xc2\xb6\x77\x23\x6c\x0f\xc6\x46\x4e\x09\x0d"
        "\xf5\x8f\x56\x6e\x7d\xdf\x42\x01\x25\x1f\xe1\x74\x4a\x7f\x28\x91\x63"
        "\xa0\x8a\xcb\xa8\x27\xa2\x5e\xd4\xf0\xde\x90\x82\xa5\xf6\x84\x63\xc0"
        "\xdc\xad\xf3\x1b\xe1\xd4\xe6\x21\x5d\x0b\x52\x16\x68\x7c\xea\x75\x75"
        "\x83\x63\xf9\xf0\x71\x54\x02\x30\x5a\xd4\x49\xa0\x0d\xc9\x6b\xb8\x04"
        "\xb6\xde\x6f\x76\x8a\x9a\xf9\x74\x92\x99\x9b\x28\xd5\x10\x48\x8f\xa5"
        "\x71\x00\x5a\x36\xdc\x0b\xbc\x48\xe0\x06\x7f\x78\xd2\x85\xa0\x32\x87"
        "\x2d\xff\xe7\x33\x88\x4e\x38\x25\x11\xa3\x76\xd1\x8f\x32\x99\xc3\x0e"
        "\x14\x73\xb8\xdd\xa3\xa0\x0b\x02\xbf\x69\x4f\x7f\x8a\x10\x2b\xde\x10"
        "\xad\x6b\xfd\x43\xaf\xcf\x3d\x6b\xa0\x0b\x23\x3a\x71\xbe\x46\x8c\x7b"
        "\xa6\x65\xd2\xb2\xbf\xac\xcf\xab\xb8\x96\x0b\xca\x83\x97\x01\xa5\x0b"
        "\xa9\x33\xc9\x09\x07\xaf\x88\x32\xae\x55\xc9\xa7\x77\x6c\x73\xdf\x18"
        "\xd6\x73\xc0\x18\x47\xbf\x42\x7f\xdf\xea\x16\xd7\x01\x96\x50\x7f\x54"
        "\x4b\xc4\xf1\x91\xb9\x8e\xe0\xfc\x2f\x1b\x16\xf8\xcc\xe6\xde\x51\x02"
        "\xb9\x1a\xcf\x19\x81\xf2\x0f\x56\x83\x49\xf7\x96\x0c\xd7\x74\x1c\x53"
        "\x1f\x64\x09\x9b\xae\xdd\xe0\x3f\xf8\xbf\x56\xd7\x5b\x69\x4d\xdd\x6e"
        "\x7d\xa9\x53\x4c\x99\xd4\xb6\x6a\xb3\x69\x86\x2c\x33\x53\xbf\xb4\x84"
        "\x31\xe1\xda\x25\x74\xa5\xfe\xed\x74\xe4\xf8\x1b\x69\xb3\xbc\x00\x6f"
        "\xc5\x5d\xd7\x1f\x14\x74\x6f\x22\x0a\x2f\x26\x49\x9f\x06\xac\x3b\xe2"
        "\x09\x35\x49\x93\x71\x9d\xf6\x40\xc8\x85\x88\x7c\x6b\x7e\x06\x63\x02"
        "\x34\x45\xab\x40\x2b\x38\x3a\x72\x80\x87\x9f\x87\x61\xaf\x6d\xb2\x80"
        "\x34\xbd\xea\xf6\x0d\xa5\x65\xcf\x6d\xac\x98\xde\xed\x7b\x20\x32\xda"
        "\xae\x4d\xe5\x47\x81\xd1\xe7\x80\x35\xcf\xb0\x75\x4e\xf9\x8e\x1e\x85"
        "\x52\xb0\x1f\xf7\xd8\x58\x9f\x14\x01\x9d\xf2\x0a\x2f\x76\xde\x10\x50"
        "\x07\xc1\x9a\x0f\x15\x3e\xd3\x5b\x29\x5b\xdc\x6e\x0b\xcb\x82\x5b\xd4"
        "\x38\x3a\xa3\x57\x04\x40\x04\x67\xe8\x6e\x3e\x86\xd3\x66\x89\x36\x8d"
        "\x1a\x40\x8e\xd9\x34\x6c\xfe\xd3\xdd\x0f\xde\x48\x73\x0d\xb9\x34\xf8"
        "\xb6\xd4\xeb\x29\x82\x3e\x85\xb7\xfb\xee\x41\xc7\x10\x2c\x02\x08\xb7"
        "\x59\x7f\xf8\xa7\xa8\x21\x02\xa9\x9d\x34\x95\x0a\xeb\xf9\x2b\x5d\x85"
        "\xbd\xb7\x43\x9c\x0b\xd4\x60\xfa\xd0\xbb\x29\xb0\xc2\x04\x2c\xf1\xe6"
        "\xf9\x02\x6e\xcf\x56\xb0\x11\xd8\x11\x0b\xd6\x6d\xce\xc5\x86\x46\x56"
        "\xfb\xf1\x57\x4d\xe1\xe6\x94\x89\x67\x9a\x2c\x75\xb6\x3c\x17\x28\x15"
        "\x41\x94\x79\x1a\xe1\xcc\x44\x35\x12\xf2\x00\xa0\xbb\x67\x70\xc9\x26"
        "\x85\xed\xc6\x4f\x64\xfd\xbf\x64\xe8\xa3\x63\xe2\xb7\xd4\xf1\xe2\xc1"
        "\x8f\xa7\xa5\xba\xa1\x42\xf4\x36\x14\xe6\x7b\x14\x50\xae\x24\xb5\x65"
        "\xd8\x1a\x72\xca\xba\xbb\x9b\x84\xbb\xa4\x24\x8f\x49\x12\x86\xd5\x32"
        "\xcb\xf6\xfc\x22\x63\x98\x47\x01\xb8\xce\x91\xac\x7d\xf1\x05\xdc\x2f"
        "\x60\x76\xbe\x10\x15\xee\x19\xb0\x4f\x96\x3d\xfc\x7e\x77\x47\xc9\x59"
        "\x7c\x0d\x22\xd5\x26\x11\x54\x8c\x77\xb9\x33\x70\x51\xfb\xec\xa9\xff"
        "\x5a\x38\xd1\x7c\x02\x2b\x6e\x08\x90\xec\x13\x67\x8d\x92\x70\xcf\x81"
        "\xa4\x0a\xf2\xf5\xe4\x5e\xde\xe1\x24\x94\x13\xe0\x25\xea\x3a\xf8\xe6"
        "\x6f\x32\xaf\x35\xf0\x9f\x68\xda\x77\x30\xfe\xe4\xf8\xd4\xc0\xc0\x13"
        "\x98\xd7\x88\x6f\xe0\xb4\xe5\xd1\x59\x7d\x41\x65\x76\x72\xf4\xec\xbc"
        "\x46\xee\xfa\xfc\xcd\xf9\x0f\x14\xea\x94\xb2\x4f\xdb\x83\xe4\xe0\xac"
        "\x57\x64\x81\xb8\x10\xf7\xa1\x8d\xba\xc9\x13\xa6\xb7\x57\xf7\x6e\x0d"
        "\x55\xfb\x23\xe4\xa7\x2f\x0f\xd1\xb9\x16\x47\xa5\x57\x27\xd6\xde\xb0"
        "\x93\xc8\xad\x27\x65\x62\x7a\x94\x70\x12\xb1\xe1\x17\x02\x8f\x8f\x4e"
        "\x05\x83\x24\x06\xa3\xaa\x8e\x0b\xf5\xda\x7a\x45\x4c\x29\xfc\x2f\x6f"
        "\xd4\x84\x14\x58\x05\xf8\xa4\x45\xcb\x63\x72\x54\xec\x7f\x59\x02\x82"
        "\xb4\x66\xea\xf5\x6b\x7b\xf6\x8b\x4a\xc7\xf4\x66\x9c\xd1\xa4\x0a\x63"
        "\xb3\x9f\xfe\x29\x04\x98\xd8\x00\x0e\x88\x03\xce\x34\xb4\xb8\xbf\x64"
        "\x42\xb8\x59\x6b\x8a\x10\x92\xf7\xed\x09\x81\x92\x0d\xf2\x66\xd2\x6e"
        "\x07\x82\x61\xaf\x8c\xea\xc4\x7a\x54\x78\x83\x16\xdd\x5e\xcb\x2b\x50"
        "\xd4\x5f\x63\x32\xf5\x0d\x09\x82\x63\x0c\x97\xad\xc1\xdc\x4f\x67\xdd"
        "\xce\xec\x2f\x2c\x04\x4c\x5b\xf4\x92\x23\xf4\x15\x79\x86\x45\x7f\x1b"
        "\x9c\x51\x79\x9a\x02\x8b\xa8\xd9\x87\x97\x4f\x15\x9b\xd3\x3e\xb0\xfb"
        "\xb9\xdf\x7c\x72\x7c\x83\xe5\x40\x90\x92\x46\x94\x14\xe2\xd5\x31\x06"
        "\x8b\xd5\x02\x1c\xe1\x89\x7e\x56\x55\x98\x62\xd9\x92\x45\xb9\x08\x41"
        "\xe5\x7f\x58\xbe\x3e\x90\x29\x33\xca\xe7\x9b\xc7\xb7\x26\x91\xeb\xc5"
        "\x14\xe6\x02\xfb\x9a\xbf\x03\x3e\x8b\xc9\xa5\x02\x57\x9c\x1e\xf4\xf5"
        "\xea\x2b\xbf\xab\x13\xec\x65\xad\x58\x3d\x24\xe7\xde\xf2\xfa\x4e\x72"
        "\x4d\x59\x62\x0b\x53\xe6\xb5\xe2\x38\x43\x4d\xd5\xc0\x98\xb6\xaf\x13"
        "\x1d\x91\x9b\x8b\x36\x43\xaa\xee\xa2\x2a\x47\xa9\x98\xeb\xed\xb9\x12"
        "\x8c\x8b\x3b\x1f\xf4\xe4\x71\x9e\x37\xf8\xe3\x31\x9e\xcb\x22\xa4\xd8"
        "\x91\xd7\x2e\xb2\x8d\x9b\x02\x8f\x3f\xf6\xc0\xf7\x12\xa4\xc2\xf5\x0e"
        "\x57\x15\x61\xba\xb0\x94\x2c\xb8\x8f\x76\xb9\xda\x5f\x9f\x40\x73\x61"
        "\x14\xc4\x78\x0f\x35\xda\x06\xa7\xc5\x94\xcf\x59\xca\x26\x0c\x06\xa1"
        "\x4b\xd6\x42\xc0\x05\xb6\x86\x48\x33\x05\x31\x97\xd3\xa2\x6b\x81\xb4"
        "\x3a\x4b\xb7\x74\xa2\x8c\x8b\x80\xe2\xc5\x41\xa9\x9b\xcb\x25\x1b\x90"
        "\x4e\x93\xc3\x4c\xd6\x58\xf0\xc1\x57\x54\xee\x58\x3d\x69\x82\x0a\x08"
        "\x20\xc2\x23\x43\x12\x80\x61\xab\xa3\xb7\xd8\x5a\xee\x93\xf9\x10\x3a"
        "\xd6\x38\xd5\x35\x3e\x26\x1b\xf1\xec\x0d\x6c\x82\xe1\x92\xcf\x60\x14"
        "\x94\x01\xe0\x35\x41\x0e\x2f\x63\x31\x96\x6e\x76\xf4\x8b\xa1\xe5\x46"
        "\xf4\xa4\x85\x51\xb2\x1f\x85\xfc\xce\x9d\x61\xbc\x55\x9f\x68\x8e\x2f"
        "\x53\x3a\x0c\xcf\x77\x72\x00\x7b\x2f\xb7\x91\x9b\x22\xf0\xf8\x0e\xee"
        "\xf0\x83\xef\x93\xe8\xad\x26\x91\xd1\xfb\x99\x27\xa7\x61\x8e\x13\xd8"
        "\x53\xc9\x0d\xe3\x40\x27\xcd\x8a\x98\x93\x36\x0a\x57\x11\xa1\x2f\x3f"
        "\x12\xb6\x33\xd9\x3b\x51\xca\xad\xb6\xf8\x03\x61\x6d\x97\x20\x25\x90"
        "\xc7\x02\x62\xf4\x08\x78\xa9\x21\x60\x97\x16\x04\xf0\x86\xe5\xea\x86"
        "\x0c\x9c\x9f\x26\xb4\xa7\x34\x4d\x21\x1c\xd8\x8f\x89\x02\x4d\xda\xb4"
        "\xcf\x33\x64\xe9\x7b\xa0\x41\xba\xe6\x36\x65\xcd\x4c\x0d\xc7\xa6\x9c"
        "\x3d\x66\xe7\x1a\xd1\xf8\x3a\x83\xe0\x66\x55\x6a\x6e\x28\x4d\x68\xd9"
        "\xc3\x8f\x59\xe8\x22\xe6\xbc\x1d\xa9\x55\x23\x1d\x5f\x4d\x4a\x12\xaa"
        "\x4c\xd9\xe2\x38\x9b\x80\xfb\xd2\x72\x30\x35\xa0\x6c\x58\xb6\xc4\x86"
        "\xac\xdf\x91\x82\xd7\x14\xe0\x78\xff\x3b\xc7\xc4\x5e\x01\xb5\x1b\x86"
        "\x0b\x44\x1f\x0d\x14\xca\xbf\x8d\x92\xfb\x5f\x52\x0c\xdc\x67\xab\x0e"
        "\xa1\xf9\xc2\x31\xcc\x15\x4e\x95\x60\x5b\x76\x3d\x9c\xa7\xed\x64\x9a"
        "\x4b\x68\x30\xc2\x3e\xc0\xb8\x29\xe4\x52\xe0\xda\x89\x63\xf4\x7f\xec"
        "\xfe\x58\x7b\x35\xae\xc4\x24\x0d\xc1\xfd\xc1\xbf\x4b\x53\xee\xd4\xda"
        "\x54\xfe\x27\xe8\x5e\x49\xcc\x47\xd9\x1d\x04\x3f\x8b\x42\xcf\x94\x93"
        "\x7b\xae\x2e\x9f\xf2\x6c\x87\x79\x01\x75\x36\xac\x37\x73\x69\x92\x10"
        "\x7a\x99\x5d\x76\x2a\x38\xc3\xc2\x65\x0f\xac\x94\xe1\x86\xde\x01\x90"
        "\x5b\x39\x09\x9d\x76\x86\xbb\xe2\x6d\x6d\xc4\x3c\x95\x2c\x13\xbd\x11"
        "\xc8\x90\x0c\x89\x72\x9e\x2a\x5c\xf3\x70\x01\x45\x46\xed\xef\xdf\x64"
        "\x20\xf1\x36\x2d\xdc\xa4\x40\x60\x47\xf2\x82\xdc\x19\xd6\x88\xe1\x85"
        "\x45\x10\xdb\x2a\xef\x59\xaa\x8c\xe9\x40\x10\xcd\x7a\xb5\xc2\xf8\xee"
        "\xa1\x35\xe0\xbd\x26\x9f\x88\x20\xac\xe1\x84\xd8\x1b\xa6\x70\xd3\xfa"
        "\x82\xf3\x49\x1f\x5d\x1f\xcd\xfa\x1b\x96\x15\x68\x87\x00\xc3\xd8\x9f"
        "\x1d\x6e\x7d\xfb\x13\x6a\x90\x54\x09\x96\x0e\x36\xaa\xea\x88\x6a\x07"
        "\x8f\xbe\x77\x19\x30\x7e\xb1\x99\x9e\x94\xd4\x0d\x32\x43\x86\x68\x52"
        "\x21\xae\x6e\xd0\x79\x98\x0c\xf3\x1c\xc2\x30\xd5\x1b\x74\x63\x70\xcb"
        "\x1b\x38\xfc\xaf\x84\xce\xa5\x1f\x2c\xd3\x6f\xc0\x67\xd1\x54\x77\xe0"
        "\xe9\xa7\xa0\x88\xc6\x9b\x6f\x19\xbb\x6d\x61\x18\x88\x73\xea\xad\x6a"
        "\x51\xd1\xb1\x63\xc7\x6f\x57\x8c\xcb\x4f\xd3\x94\x15\xd4\x1a\x68\x21"
        "\x79\x8a\xd8\x5d\xfa\xf0\x6e\xbf\xd9\xe6\x18\x52\x0d\xdf\x16\x3b\xaa"
        "\x33\x44\xbf\x7e\x3d\x4d\xa2\x09\xb1\x5b\x27\x0c\x5f\x4d\x65\x13\xa7"
        "\x13\xdd\x5a\xd1\x56\xcb\xc6\x76\x0d\xfb\x85\x71\x82\x70\x48\x9f\xd1"
        "\x36\x96\x8a\x49\x83\x96\xba\xa5\x54\x34\x70\xc1\x28\xe2\x66\x13\x42"
        "\x9e\x8b\x9c\x3b\x33\xe4\xfd\xb0\x6d\x0f\x53\x0b\x30\x3a\xb1\x65\x70"
        "\x30\x4e\x8d\xda\x26\xd3\x5b\x80\xfc\x5b\xfe\x30\x98\x80\xfa\xbf\x56"
        "\xd7\x20\x6c\x65\xe4\x6d\x3f\x62\x51\x40\x00\x71\xcd\x9c\xc5\x1b\xc9"
        "\x33\x6c\xa1\xac\x26\x89\x80\x51\xee\x78\x53\xe8\x21\x44\xc2\xa6\x38"
        "\x15\x6e\xc0\x78\x51\x5d\xaa\xe0\x31\x4d\x11\xc4\xeb\xd1\xda\x4a\x0e"
        "\x4b\x4d\xa1\x00\x18\x61\x81\x3a\x91\x3c\xbc\xa5\x30\x89\x63\xb8",
        4096));
    NONFAILING(*(uint16_t*)0x20007c04 = 0x1000);
    syscall(__NR_write, /*fd=*/r[0], /*data=*/0x20006c00ul, /*len=*/0x1006ul);
    break;
  case 4:
    NONFAILING(memcpy((void*)0x20000040, "./file1\000", 8));
    syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000040ul,
            /*flags=O_SYNC|O_CREAT|O_RDWR*/ 0x101042, /*mode=*/0);
    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();
  loop();
  return 0;
}