// https://syzkaller.appspot.com/bug?id=d4a58de9696a60f9c0d79531cdc0d622e474e786
// 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 use_temporary_dir(void)
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    exit(1);
  if (chmod(tmpdir, 0777))
    exit(1);
  if (chdir(tmpdir))
    exit(1);
}

static void thread_start(void* (*fn)(void*), void* arg)
{
  pthread_t th;
  pthread_attr_t attr;
  pthread_attr_init(&attr);
  pthread_attr_setstacksize(&attr, 128 << 10);
  int i = 0;
  for (; i < 100; i++) {
    if (pthread_create(&th, &attr, fn, arg) == 0) {
      pthread_attr_destroy(&attr);
      return;
    }
    if (errno == EAGAIN) {
      usleep(50);
      continue;
    }
    break;
  }
  exit(1);
}

typedef struct {
  int state;
} event_t;

static void event_init(event_t* ev)
{
  ev->state = 0;
}

static void event_reset(event_t* ev)
{
  ev->state = 0;
}

static void event_set(event_t* ev)
{
  if (ev->state)
    exit(1);
  __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE);
  syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000);
}

static void event_wait(event_t* ev)
{
  while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0);
}

static int event_isset(event_t* ev)
{
  return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE);
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
  uint64_t start = current_time_ms();
  uint64_t now = start;
  for (;;) {
    uint64_t remain = timeout - (now - start);
    struct timespec ts;
    ts.tv_sec = remain / 1000;
    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts);
    if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
      return 1;
    now = current_time_ms();
    if (now - start > timeout)
      return 0;
  }
}

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

//% This code is derived from puff.{c,h}, found in the zlib development. The
//% original files come with the following copyright notice:

//% Copyright (C) 2002-2013 Mark Adler, all rights reserved
//% version 2.3, 21 Jan 2013
//% This software is provided 'as-is', without any express or implied
//% warranty.  In no event will the author be held liable for any damages
//% arising from the use of this software.
//% Permission is granted to anyone to use this software for any purpose,
//% including commercial applications, and to alter it and redistribute it
//% freely, subject to the following restrictions:
//% 1. The origin of this software must not be misrepresented; you must not
//%    claim that you wrote the original software. If you use this software
//%    in a product, an acknowledgment in the product documentation would be
//%    appreciated but is not required.
//% 2. Altered source versions must be plainly marked as such, and must not be
//%    misrepresented as being the original software.
//% 3. This notice may not be removed or altered from any source distribution.
//% Mark Adler    madler@alumni.caltech.edu

//% BEGIN CODE DERIVED FROM puff.{c,h}

#define MAXBITS 15
#define MAXLCODES 286
#define MAXDCODES 30
#define MAXCODES (MAXLCODES + MAXDCODES)
#define FIXLCODES 288

struct puff_state {
  unsigned char* out;
  unsigned long outlen;
  unsigned long outcnt;
  const unsigned char* in;
  unsigned long inlen;
  unsigned long incnt;
  int bitbuf;
  int bitcnt;
  jmp_buf env;
};
static int puff_bits(struct puff_state* s, int need)
{
  long val = s->bitbuf;
  while (s->bitcnt < need) {
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    val |= (long)(s->in[s->incnt++]) << s->bitcnt;
    s->bitcnt += 8;
  }
  s->bitbuf = (int)(val >> need);
  s->bitcnt -= need;
  return (int)(val & ((1L << need) - 1));
}
static int puff_stored(struct puff_state* s)
{
  s->bitbuf = 0;
  s->bitcnt = 0;
  if (s->incnt + 4 > s->inlen)
    return 2;
  unsigned len = s->in[s->incnt++];
  len |= s->in[s->incnt++] << 8;
  if (s->in[s->incnt++] != (~len & 0xff) ||
      s->in[s->incnt++] != ((~len >> 8) & 0xff))
    return -2;
  if (s->incnt + len > s->inlen)
    return 2;
  if (s->outcnt + len > s->outlen)
    return 1;
  for (; len--; s->outcnt++, s->incnt++) {
    if (s->in[s->incnt])
      s->out[s->outcnt] = s->in[s->incnt];
  }
  return 0;
}
struct puff_huffman {
  short* count;
  short* symbol;
};
static int puff_decode(struct puff_state* s, const struct puff_huffman* h)
{
  int first = 0;
  int index = 0;
  int bitbuf = s->bitbuf;
  int left = s->bitcnt;
  int code = first = index = 0;
  int len = 1;
  short* next = h->count + 1;
  while (1) {
    while (left--) {
      code |= bitbuf & 1;
      bitbuf >>= 1;
      int count = *next++;
      if (code - count < first) {
        s->bitbuf = bitbuf;
        s->bitcnt = (s->bitcnt - len) & 7;
        return h->symbol[index + (code - first)];
      }
      index += count;
      first += count;
      first <<= 1;
      code <<= 1;
      len++;
    }
    left = (MAXBITS + 1) - len;
    if (left == 0)
      break;
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    bitbuf = s->in[s->incnt++];
    if (left > 8)
      left = 8;
  }
  return -10;
}
static int puff_construct(struct puff_huffman* h, const short* length, int n)
{
  int len;
  for (len = 0; len <= MAXBITS; len++)
    h->count[len] = 0;
  int symbol;
  for (symbol = 0; symbol < n; symbol++)
    (h->count[length[symbol]])++;
  if (h->count[0] == n)
    return 0;
  int left = 1;
  for (len = 1; len <= MAXBITS; len++) {
    left <<= 1;
    left -= h->count[len];
    if (left < 0)
      return left;
  }
  short offs[MAXBITS + 1];
  offs[1] = 0;
  for (len = 1; len < MAXBITS; len++)
    offs[len + 1] = offs[len] + h->count[len];
  for (symbol = 0; symbol < n; symbol++)
    if (length[symbol] != 0)
      h->symbol[offs[length[symbol]]++] = symbol;
  return left;
}
static int puff_codes(struct puff_state* s, const struct puff_huffman* lencode,
                      const struct puff_huffman* distcode)
{
  static const short lens[29] = {3,  4,  5,  6,   7,   8,   9,   10,  11, 13,
                                 15, 17, 19, 23,  27,  31,  35,  43,  51, 59,
                                 67, 83, 99, 115, 131, 163, 195, 227, 258};
  static const short lext[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2,
                                 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0};
  static const short dists[30] = {
      1,    2,    3,    4,    5,    7,    9,    13,    17,    25,
      33,   49,   65,   97,   129,  193,  257,  385,   513,   769,
      1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577};
  static const short dext[30] = {0, 0, 0,  0,  1,  1,  2,  2,  3,  3,
                                 4, 4, 5,  5,  6,  6,  7,  7,  8,  8,
                                 9, 9, 10, 10, 11, 11, 12, 12, 13, 13};
  int symbol;
  do {
    symbol = puff_decode(s, lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 256) {
      if (s->outcnt == s->outlen)
        return 1;
      if (symbol)
        s->out[s->outcnt] = symbol;
      s->outcnt++;
    } else if (symbol > 256) {
      symbol -= 257;
      if (symbol >= 29)
        return -10;
      int len = lens[symbol] + puff_bits(s, lext[symbol]);
      symbol = puff_decode(s, distcode);
      if (symbol < 0)
        return symbol;
      unsigned dist = dists[symbol] + puff_bits(s, dext[symbol]);
      if (dist > s->outcnt)
        return -11;
      if (s->outcnt + len > s->outlen)
        return 1;
      while (len--) {
        if (dist <= s->outcnt && s->out[s->outcnt - dist])
          s->out[s->outcnt] = s->out[s->outcnt - dist];
        s->outcnt++;
      }
    }
  } while (symbol != 256);
  return 0;
}
static int puff_fixed(struct puff_state* s)
{
  static int virgin = 1;
  static short lencnt[MAXBITS + 1], lensym[FIXLCODES];
  static short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  static struct puff_huffman lencode, distcode;
  if (virgin) {
    lencode.count = lencnt;
    lencode.symbol = lensym;
    distcode.count = distcnt;
    distcode.symbol = distsym;
    short lengths[FIXLCODES];
    int symbol;
    for (symbol = 0; symbol < 144; symbol++)
      lengths[symbol] = 8;
    for (; symbol < 256; symbol++)
      lengths[symbol] = 9;
    for (; symbol < 280; symbol++)
      lengths[symbol] = 7;
    for (; symbol < FIXLCODES; symbol++)
      lengths[symbol] = 8;
    puff_construct(&lencode, lengths, FIXLCODES);
    for (symbol = 0; symbol < MAXDCODES; symbol++)
      lengths[symbol] = 5;
    puff_construct(&distcode, lengths, MAXDCODES);
    virgin = 0;
  }
  return puff_codes(s, &lencode, &distcode);
}
static int puff_dynamic(struct puff_state* s)
{
  static const short order[19] = {16, 17, 18, 0, 8,  7, 9,  6, 10, 5,
                                  11, 4,  12, 3, 13, 2, 14, 1, 15};
  int nlen = puff_bits(s, 5) + 257;
  int ndist = puff_bits(s, 5) + 1;
  int ncode = puff_bits(s, 4) + 4;
  if (nlen > MAXLCODES || ndist > MAXDCODES)
    return -3;
  short lengths[MAXCODES];
  int index;
  for (index = 0; index < ncode; index++)
    lengths[order[index]] = puff_bits(s, 3);
  for (; index < 19; index++)
    lengths[order[index]] = 0;
  short lencnt[MAXBITS + 1], lensym[MAXLCODES];
  struct puff_huffman lencode = {lencnt, lensym};
  int err = puff_construct(&lencode, lengths, 19);
  if (err != 0)
    return -4;
  index = 0;
  while (index < nlen + ndist) {
    int symbol;
    int len;
    symbol = puff_decode(s, &lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 16)
      lengths[index++] = symbol;
    else {
      len = 0;
      if (symbol == 16) {
        if (index == 0)
          return -5;
        len = lengths[index - 1];
        symbol = 3 + puff_bits(s, 2);
      } else if (symbol == 17)
        symbol = 3 + puff_bits(s, 3);
      else
        symbol = 11 + puff_bits(s, 7);
      if (index + symbol > nlen + ndist)
        return -6;
      while (symbol--)
        lengths[index++] = len;
    }
  }
  if (lengths[256] == 0)
    return -9;
  err = puff_construct(&lencode, lengths, nlen);
  if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1]))
    return -7;
  short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  struct puff_huffman distcode = {distcnt, distsym};
  err = puff_construct(&distcode, lengths + nlen, ndist);
  if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1]))
    return -8;
  return puff_codes(s, &lencode, &distcode);
}
static int puff(unsigned char* dest, unsigned long* destlen,
                const unsigned char* source, unsigned long sourcelen)
{
  struct puff_state s = {
      .out = dest,
      .outlen = *destlen,
      .outcnt = 0,
      .in = source,
      .inlen = sourcelen,
      .incnt = 0,
      .bitbuf = 0,
      .bitcnt = 0,
  };
  int err;
  if (setjmp(s.env) != 0)
    err = 2;
  else {
    int last;
    do {
      last = puff_bits(&s, 1);
      int type = puff_bits(&s, 2);
      err = type == 0 ? puff_stored(&s)
                      : (type == 1 ? puff_fixed(&s)
                                   : (type == 2 ? puff_dynamic(&s) : -1));
      if (err != 0)
        break;
    } while (!last);
  }
  *destlen = s.outcnt;
  return err;
}

//% END CODE DERIVED FROM puff.{c,h}

#define ZLIB_HEADER_WIDTH 2

static int puff_zlib_to_file(const unsigned char* source,
                             unsigned long sourcelen, int dest_fd)
{
  if (sourcelen < ZLIB_HEADER_WIDTH)
    return 0;
  source += ZLIB_HEADER_WIDTH;
  sourcelen -= ZLIB_HEADER_WIDTH;
  const unsigned long max_destlen = 132 << 20;
  void* ret = mmap(0, max_destlen, PROT_WRITE | PROT_READ,
                   MAP_PRIVATE | MAP_ANON, -1, 0);
  if (ret == MAP_FAILED)
    return -1;
  unsigned char* dest = (unsigned char*)ret;
  unsigned long destlen = max_destlen;
  int err = puff(dest, &destlen, source, sourcelen);
  if (err) {
    munmap(dest, max_destlen);
    errno = -err;
    return -1;
  }
  if (write(dest_fd, dest, destlen) != (ssize_t)destlen) {
    munmap(dest, max_destlen);
    return -1;
  }
  return munmap(dest, destlen);
}

static int setup_loop_device(unsigned char* data, unsigned long size,
                             const char* loopname, int* loopfd_p)
{
  int err = 0, loopfd = -1;
  int memfd = syscall(__NR_memfd_create, "syzkaller", 0);
  if (memfd == -1) {
    err = errno;
    goto error;
  }
  if (puff_zlib_to_file(data, size, memfd)) {
    err = errno;
    goto error_close_memfd;
  }
  loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    err = errno;
    goto error_close_memfd;
  }
  if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
    if (errno != EBUSY) {
      err = errno;
      goto error_close_loop;
    }
    ioctl(loopfd, LOOP_CLR_FD, 0);
    usleep(1000);
    if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
      err = errno;
      goto error_close_loop;
    }
  }
  close(memfd);
  *loopfd_p = loopfd;
  return 0;

error_close_loop:
  close(loopfd);
error_close_memfd:
  close(memfd);
error:
  errno = err;
  return -1;
}

static long syz_mount_image(volatile long fsarg, volatile long dir,
                            volatile long flags, volatile long optsarg,
                            volatile long change_dir,
                            volatile unsigned long size, volatile long image)
{
  unsigned char* data = (unsigned char*)image;
  int res = -1, err = 0, loopfd = -1, need_loop_device = !!size;
  char* mount_opts = (char*)optsarg;
  char* target = (char*)dir;
  char* fs = (char*)fsarg;
  char* source = NULL;
  char loopname[64];
  if (need_loop_device) {
    memset(loopname, 0, sizeof(loopname));
    snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
    if (setup_loop_device(data, size, loopname, &loopfd) == -1)
      return -1;
    source = loopname;
  }
  mkdir(target, 0777);
  char opts[256];
  memset(opts, 0, sizeof(opts));
  if (strlen(mount_opts) > (sizeof(opts) - 32)) {
  }
  strncpy(opts, mount_opts, sizeof(opts) - 32);
  if (strcmp(fs, "iso9660") == 0) {
    flags |= MS_RDONLY;
  } else if (strncmp(fs, "ext", 3) == 0) {
    bool has_remount_ro = false;
    char* remount_ro_start = strstr(opts, "errors=remount-ro");
    if (remount_ro_start != NULL) {
      char after = *(remount_ro_start + strlen("errors=remount-ro"));
      char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1);
      has_remount_ro = ((before == '\0' || before == ',') &&
                        (after == '\0' || after == ','));
    }
    if (strstr(opts, "errors=panic") || !has_remount_ro)
      strcat(opts, ",errors=continue");
  } else if (strcmp(fs, "xfs") == 0) {
    strcat(opts, ",nouuid");
  }
  res = mount(source, target, fs, flags, opts);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  res = open(target, O_RDONLY | O_DIRECTORY);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  if (change_dir) {
    res = chdir(target);
    if (res == -1) {
      err = errno;
    }
  }

error_clear_loop:
  if (need_loop_device) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
  errno = err;
  return res;
}

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  int iter = 0;
  DIR* dp = 0;
retry:
  while (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW) == 0) {
  }
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exit(1);
    }
    exit(1);
  }
  struct dirent* ep = 0;
  while ((ep = readdir(dp))) {
    if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
      continue;
    char filename[FILENAME_MAX];
    snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
    while (umount2(filename, MNT_DETACH | UMOUNT_NOFOLLOW) == 0) {
    }
    struct stat st;
    if (lstat(filename, &st))
      exit(1);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      if (unlink(filename) == 0)
        break;
      if (errno == EPERM) {
        int fd = open(filename, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno != EBUSY || i > 100)
        exit(1);
      if (umount2(filename, MNT_DETACH | UMOUNT_NOFOLLOW))
        exit(1);
    }
  }
  closedir(dp);
  for (int i = 0;; i++) {
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EPERM) {
        int fd = open(dir, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno == EBUSY) {
        if (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW))
          exit(1);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exit(1);
  }
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  for (int i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

static void reset_loop()
{
  char buf[64];
  snprintf(buf, sizeof(buf), "/dev/loop%llu", procid);
  int loopfd = open(buf, O_RDWR);
  if (loopfd != -1) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
}

static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  write_file("/proc/self/oom_score_adj", "1000");
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

struct thread_t {
  int created, call;
  event_t ready, done;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    event_wait(&th->ready);
    event_reset(&th->ready);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    event_set(&th->done);
  }
  return 0;
}

static void execute_one(void)
{
  int i, call, thread;
  for (call = 0; call < 8; 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 == 6)
        break;
      event_timedwait(&th->done,
                      50 + (call == 0 ? 4000 : 0) + (call == 1 ? 4000 : 0));
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      exit(1);
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      if (chdir(cwdbuf))
        exit(1);
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    NONFAILING(memcpy((void*)0x20000040, "hfs\000", 4));
    NONFAILING(memcpy((void*)0x20000080, "./bus\000", 6));
    NONFAILING(memcpy((void*)0x20000480, "file_umask", 10));
    NONFAILING(*(uint8_t*)0x2000048a = 0x3d);
    NONFAILING(sprintf((char*)0x2000048b, "%023llo", (long long)1));
    NONFAILING(*(uint8_t*)0x200004a2 = 0x2c);
    NONFAILING(memcpy((void*)0x200004a3, "codepage", 8));
    NONFAILING(*(uint8_t*)0x200004ab = 0x3d);
    NONFAILING(memcpy((void*)0x200004ac, "iso8859-2", 9));
    NONFAILING(*(uint8_t*)0x200004b5 = 0x2c);
    NONFAILING(memcpy((void*)0x200004b6, "quiet", 5));
    NONFAILING(*(uint8_t*)0x200004bb = 0x2c);
    NONFAILING(memcpy((void*)0x200004bc, "file_umask", 10));
    NONFAILING(*(uint8_t*)0x200004c6 = 0x3d);
    NONFAILING(sprintf((char*)0x200004c7, "%023llo", (long long)0x1304));
    NONFAILING(*(uint8_t*)0x200004de = 0x2c);
    NONFAILING(memcpy((void*)0x200004df, "quiet", 5));
    NONFAILING(*(uint8_t*)0x200004e4 = 0x2c);
    NONFAILING(memcpy((void*)0x200004e5, "quiet", 5));
    NONFAILING(*(uint8_t*)0x200004ea = 0x2c);
    NONFAILING(*(uint8_t*)0x200004eb = 0);
    NONFAILING(memcpy(
        (void*)0x20000b00,
        "\x78\x9c\xec\xdd\xc1\x4e\x13\x41\x1c\xc7\xf1\xdf\x6c\x5b\x40\x21\xb8"
        "\x82\xc6\xc4\x23\x4a\xa2\x17\x03\x78\x31\x5e\x6a\x4c\x1f\xc2\x93\x51"
        "\x69\x4d\x88\x0d\x46\xc5\x44\xb8\x88\xc6\xa3\xf1\x01\xbc\xfb\x0a\x3e"
        "\x84\x1e\x34\xbe\x00\x9e\x3c\xf9\x00\xdc\xd6\xcc\xec\x74\xd9\x85\xdd"
        "\x6e\x85\xd2\x85\xf2\xfd\x24\x6d\x76\xbb\x33\x3b\xff\xe9\xcc\x74\x66"
        "\x4a\x48\x05\xe0\xcc\xba\xdf\xda\xf9\x72\xfb\x8f\x7d\x18\xa9\xa6\x9a"
        "\xa4\xbb\x52\x20\x69\x4a\xaa\x4b\xba\xac\x2b\x53\xaf\xd7\x37\xd6\x36"
        "\xba\x9d\x76\xbf\x1b\xd5\x5c\x0e\xfb\x30\x8a\x73\x1a\x7f\xc5\x24\x69"
        "\x56\xd7\x3b\x79\x59\x6d\x3e\x97\xc3\x0b\xed\x59\x5d\x33\xe9\xd7\x70"
        "\x3c\xa2\x28\xba\xf7\xbb\xea\x20\x50\x39\x37\xfa\xa5\x46\xea\xdc\x09"
        "\xa4\x49\x3f\x3a\xed\xf5\x78\xac\x8e\x81\xed\xaa\x03\xa8\x98\xd9\xd5"
        "\xae\xde\x68\xb6\xea\x38\x00\x00\xd5\xf2\xf3\x7f\xe0\xe7\xf9\x19\xbf"
        "\x04\x08\x02\x69\xd1\x4f\xfb\x63\x30\xff\x47\x6f\x7b\x7b\x8a\xdd\xaa"
        "\x43\x39\x76\x51\xdf\xab\xa9\xf9\xdf\xbd\x23\x91\xb1\xed\x7b\xc1\x5d"
        "\xda\xdb\xef\xb9\x55\xa0\xbd\x1e\xf4\x76\x89\x83\x94\xdc\xd8\x77\x3e"
        "\xa1\xb8\x67\xd5\x32\x01\x94\xed\x2a\x5d\x2c\xc1\xb9\xa7\x6b\xdd\xce"
        "\xad\xd5\xe7\xdd\x76\xa0\xf7\x6a\x7a\xa9\x64\xef\xdc\x73\x3b\xee\xba"
        "\x3d\x25\xd1\x2e\xa4\xf6\xa4\x03\x18\xa0\xee\x26\x7f\x45\x39\xed\xea"
        "\xd0\xb0\x75\x58\x29\x88\x7f\xfe\x90\x25\x1e\x9a\xf9\x66\x7e\x9a\x87"
        "\x26\xd4\x67\xb5\x93\xf5\x5f\x3d\x32\xb6\x99\x5c\x4b\x85\xfb\x5a\x2a"
        "\x8e\x7f\xa9\xf8\x8e\xae\x96\xa1\x4d\x25\xff\xb1\xd1\x6c\x36\x83\x4c"
        "\x92\x8b\xae\x90\xab\xbe\x04\xaf\xa4\x96\x53\xd9\x30\xd2\x26\xfc\x3d"
        "\x27\xd3\x2f\x86\x65\x71\xba\x5c\x73\xca\x7e\xad\x10\xd7\x6e\xb9\x24"
        "\xd7\x7c\x6e\xae\x95\xde\x59\x41\xae\x4b\x99\x5c\xb6\x36\x49\x6f\x2e"
        "\x2e\xef\xc8\x4a\xfa\xb6\xf9\x64\x1e\x98\x05\xfd\xd5\x57\xb5\x52\xeb"
        "\xff\xc0\xc6\xb7\x28\x3f\x32\x4d\xc9\xf7\x3d\xc6\xa5\xf4\x3d\x23\xae"
        "\xcf\x44\x7e\xca\xba\x4b\x19\x1e\x98\x39\x0e\x0e\x97\xe4\x5d\x9c\xec"
        "\x5f\x01\x0c\xc3\x47\x3d\xd1\x1d\xcd\xbe\xda\xdc\x7a\x56\xeb\x76\x3b"
        "\x2f\xed\xc1\xe3\x9c\x83\x17\x33\xc9\x2b\x8d\x0f\x52\x6e\x9a\xde\x81"
        "\xf1\xbd\xbd\x5f\x9a\x63\x38\xd0\x76\x5c\xba\xaf\x59\x64\xe5\x26\xb6"
        "\xe1\xe5\xdc\x67\xd5\x77\xb8\xa1\x07\x76\x73\xa8\x37\xb4\x9f\x1f\xa5"
        "\x89\xed\x28\x1b\x52\xa1\xd2\xc8\x5a\xf0\xf4\x1c\xd8\xb5\xcd\xe6\x56"
        "\xeb\x47\x7e\x6f\xe9\x0d\xae\x13\x11\xea\x11\x0f\xaa\xf8\x50\xc2\xa8"
        "\xed\x35\xba\xf8\x73\xcb\xd9\x64\xd7\x5d\x26\xde\xff\xa5\xf6\x2b\x4b"
        "\x6e\x3a\xb5\x4f\xe1\xce\xf7\xc2\xbc\xfd\x37\x99\xd9\x1d\xd0\x72\xb2"
        "\x03\xca\x2e\x05\xe7\xdc\xf3\xf9\xff\xda\xc1\x4d\x17\xaf\x72\x07\xdd"
        "\x73\x5d\xbb\x21\x5d\x1f\xbc\xc4\xd0\xc7\x39\x26\x4c\x4b\xbf\xf4\x88"
        "\xef\xff\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x4e\x9b\x51\xfc\x3b\x41\xd5\x75\x04\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\xe0\xb4\x1b\xc1\xef\xff\xee\xe1\xf7"
        "\x7f\x81\x13\xe5\x5f\x00\x00\x00\xff\xff\x5a\x06\x69\x35",
        694));
    NONFAILING(syz_mount_image(
        /*fs=*/0x20000040, /*dir=*/0x20000080, /*flags=*/0x180008a,
        /*opts=*/0x20000480, /*chdir=*/1, /*size=*/0x2b6, /*img=*/0x20000b00));
    break;
  case 1:
    NONFAILING(memcpy((void*)0x200000c0, "hfs\000", 4));
    NONFAILING(memcpy((void*)0x20000140, "./bus\000", 6));
    NONFAILING(memcpy(
        (void*)0x200001c0,
        "\x74\x00\x00\x65\x3d\x85\xe7\xbc\xb7\x2c\x63\x6f\x64\x65\x70\x61\x67"
        "\x65\x3d\x75\x5c\x66\x38\x2c\x69\x6f\x63\x68\x61\x72\x7a\x65\x74\x3d"
        "\x63\x70\x38\x37\x34\xb9\x00\x00\x00\x00\x00\x00\x00\x3d\x30\x78\x66"
        "\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x65\x57\xee"
        "\x7a\xef\x08\xdf\x18\xab\x68\xf7\x86\x28\xae\xb7\xd5\x20\x2c\x00\xff"
        "\xaf\xca\xff\x17\x38\xf1\x11\x0f\x46\x6b\x2d\xbd\xb5\x99\xc1\x42\x71"
        "\xf1\xe1\xdd\xa4\xd4\xc6\x78\xd8\x82\xe5\x35\xdc\x13\x8e\xab\x8a\xeb"
        "\x0b\x0e\x82\xf1\x71\x3b\x32\x57\xd3\x92\x4f\x6b\xa7\x83\x3c\x65\xf6"
        "\x68\x5b\xe0\x1d\x7b\x83\x26\x96\xc3\x63\xc6\xdc\xff\xec\xe7\x71\xf3"
        "\xc8\x5a\xe5\x83\xf3\x98\x07\x74\xba\x5c\x74\xb8\xdc\x69\x87\x6d\xad"
        "\x84\x10\x0a\x53\x4a\x78\xa9\xf7\x3d\xbd\xae\x52\xeb\x4e\x27\x82\xb8"
        "\x15\x55\xc7\x42\x47\x43\x65\x87\x1f\xe2\x06\xdb\xa2\xe6\xfc\xa9\xbf"
        "\x09\x01\xf3\x4d\x1b\x71\xf5\xb5\x2f\x1e\x8d\x50\x5c\x68\xab\xe4\x59"
        "\xf5\x8d\x0e\x4d\x40\x5c\xdf\x2c\x9d\x21\xd5\x96\x58\x45\xfa\x59\x5d"
        "\x32\xda\x02\x22\x17\x4a\xf1\x77\xdc\x5f\xcd\x34\x05\xd8\x51\x2c\x72"
        "\x8a\xf2\xe2\xa4\x38\x6e\xe1\x4a\x64\x18\xd1\xe7\x5f\x71\x22\x26\xf6"
        "\x20\x8e\x2f\xa4\xcb\x20\x09\xde\x1c\x2a\x66\x13\xb3\x0d\x1b\x47\x50"
        "\xba\x55\x85\xcb\x04\xc0\x5f\x7d\xc2\x79\x7e\x16\x1f\x8d\xcd\xb2\xa1"
        "\xfd\xad\xbf\x96\xee\x0c\xa2\xc9\x7b\xa7\x8b\x35\x6d\x00\x57\xe1\xc0"
        "\xc9\xbe\x98\xe0\xaf\x46\x6e\x06\x8d\x9a\x92\x69\xfc\x37\xdb\xb2\xd3"
        "\xc6\x17\x2e\x39\xa8\xd0\x7b\x91\xb8\x9d\x00\x1d\x7e\x59\x04\xd8\xd9"
        "\x0c\xd6\xaf\x96\x83\x11\x22\x44\x1c\x38\x61\x55\x64\x38\x2a\x16\x39"
        "\xa4\xdb\x99\xd5\x5b\xdd\x40\x7d\xbd\xec\xa8\x3b\xfa\x90\xfa\x02\xcd"
        "\xfd\xf7\x27\x9b\xe7\x64\x41\x5e\x3f\x70\xa9\xce\xd9\x1e\x65\xf6\xa2"
        "\xcb\x40\xf9\x73\xe2\x03\xb8\x92\xc9\x65\x63\x18\xb6\x96\x43\x93\x9c"
        "\x7a\xc3\x47\x94\xcf\x45\x10\xef\xd7\xba\x79\x39\x58\x96\xea\xf1\x6a"
        "\x5f\x4c\x5a\xe7\xcb\x7e\x00\x1a\x40\x69\x3c\xa4\xdc\xd4\x2d\xbf\x2a"
        "\xde\xf7\x2a\x0f\xe3\x9f\x3a\x28\xc7\xa1\x74\xdf\xb9\x4c\xf1\x7b\xe8"
        "\x48\xec\xbc\x33\xf8\x2e\x4e\x7c\xc4\x8b\x42\xef\x9e\x1d\x89\x38\x2b"
        "\x06\xd8\x91\x47\x6a\xae\xdd\x87\xf1\x6d\x04\x73\x8c\x8f\x61\x1f\x86"
        "\x34\x25\xd2\x8b\xb0\x53\xaa\x8f\xa2\x78\x1f\xe4\x6c\x2a\x76\x4c\x23"
        "\x55\xec\x33\x83\xad\x00\x65\x71\x68\x4a\x27\x58\x06\xa3\x69\x36\x60"
        "\x13\x1b\xd4\xce\x99\xf3\xbb\xa6\x74\xa4\x53\x70\x19\xd9\x80\x30\xd6"
        "\x12\x8b\xdc\xd7\x4e\x6c\x19\x99\x46\x0c\x93\x92\x55\x5b\xb3\x07\xc5"
        "\x1d\xeb\x7d\x7c\x86\xa1\xdf\x31\x7a\xe8\x38\x2f\x3d\x89\x62\x5d\x5d"
        "\x61\x21\x8d\x1d\xe4\xa2\xef\x8c\x92\xce\xbe\xef\xb6\x45\x0d\x30\xd9"
        "\x03\x24\xc2\x5d\x6c\x2e\xe4\x82\x6c",
        621));
    NONFAILING(memcpy(
        (void*)0x20000840,
        "\x78\x9c\xec\xdd\xbf\x6e\xd3\x5c\x18\xc7\xf1\xdf\x71\xd2\x36\x7d\x5b"
        "\xf5\x75\xff\xa0\x4a\x8c\x85\x4a\x4c\x88\x96\x05\xb1\x80\x50\x2e\x82"
        "\x01\x21\xa0\x09\x52\x45\x54\x24\x28\x12\x30\x21\x66\x84\xd8\x90\xd8"
        "\xd9\x98\x11\x37\xc0\xc2\x84\x58\x18\x61\x62\xe2\x02\xb2\x19\x9d\x63"
        "\x27\xb1\x13\xdb\x71\x42\x1a\xa7\xe1\xfb\x91\x1a\x25\xf5\x79\x7c\x9e"
        "\x63\x3b\xf1\x79\x2c\x25\x16\x80\x7f\xd6\x8d\xfa\x8f\xf7\x97\x7f\xd9"
        "\x3f\x23\x55\x54\x91\x74\x55\xf2\x24\xd5\xa4\xaa\xa4\x33\xda\xae\x3d"
        "\x39\x3a\x3e\x3c\x6e\x35\x1b\xc9\xd0\xef\x89\x57\x15\x17\x61\xff\x8c"
        "\xc2\x48\x33\xd0\xd9\xc1\x51\x33\x2d\x07\x1b\xe7\x22\x22\xbe\x7d\x55"
        "\xd5\x6a\xfc\x7f\x7d\x96\x47\x1e\x28\x52\x05\x41\x10\xfc\x2c\x3b\x09"
        "\x94\xce\xbd\xfb\x53\x78\xd2\x52\xf4\xee\x74\xcb\x6b\x53\xcf\xec\x64"
        "\xbc\x28\x3b\x81\x92\x99\xb6\xda\x7a\xaa\xb5\xb2\xf3\x00\x00\x94\x2b"
        "\x3a\xff\x7b\xd1\x79\x7e\x35\x9a\xbf\x7b\x9e\xb4\x1b\x9d\xf6\xe7\xea"
        "\xfc\xdf\x2e\x3b\x81\x92\xc5\xce\xff\xae\xca\x0a\x8c\xdd\xbf\xff\xbb"
        "\x45\xbd\x7a\xcf\x95\x70\x76\xb9\xd7\xa9\x12\x73\xd6\x98\xb9\x64\x51"
        "\xe1\x91\x95\x98\x60\x9a\x8c\xaa\xb2\xcb\xe5\xe2\x2d\xdf\x3f\x6c\x35"
        "\x2f\x1e\x3c\x6c\x35\x3c\xbd\xd4\xb5\x48\xac\xd9\x96\x7b\x6c\x84\x87"
        "\x6e\xc7\x90\x6c\x77\x72\x92\x4d\x31\x7c\xec\x59\x56\xdc\x18\x16\xec"
        "\x18\xf6\x33\xf2\xdf\x1c\xa7\xc7\xb7\xa3\xa7\xd2\x65\xbe\x98\xaf\xe6"
        "\xb6\xf1\xf5\x4e\x8d\xee\xfc\xaf\x1a\x18\xbb\x9b\xdc\x9e\xf2\xdd\x9e"
        "\xf2\xbb\x01\x61\xfe\x97\xb2\xd7\xe8\x46\xe9\x87\xad\x32\x46\xb9\xee"
        "\x3a\x39\x1b\xf5\xa0\x4f\x1f\x0a\x8c\xb2\x96\x5e\x91\xa8\x73\x44\xad"
        "\x2b\x79\x81\xc0\xef\xe4\xf9\x66\x31\x27\x6a\xa3\x2f\x2a\x1c\xdd\x5e"
        "\xf6\xe8\x5c\xd4\x66\x6a\xd4\xfe\x90\xa8\xad\xfe\xa8\xde\xd1\x9c\x1d"
        "\x39\xbe\x8c\x61\xf7\x31\xaf\xcd\x4d\xb3\xa3\xdf\xfa\xa8\x7a\x6c\xfe"
        "\xef\xd9\xad\xbd\xab\x22\xef\x4c\xdb\xc6\xb5\x8c\x8e\x8c\xdc\xf1\x54"
        "\x5d\x4b\xbf\x40\x62\x5e\xa1\xf4\x51\xd4\x42\xee\xd2\x57\xba\xa7\x2b"
        "\x5a\x7b\xfc\xec\xf9\x83\xbb\xad\x56\xf3\xd1\x54\x9f\xd8\x8f\xdf\x71"
        "\xc2\x2b\xd3\x4f\x75\x26\x9e\x54\x35\x8d\xbe\x3a\x07\xcc\x84\xd7\x6c"
        "\x3f\xc5\x67\x60\x1b\xce\xd4\x13\x4d\x60\xab\x2e\x9d\xec\x56\xcd\xfb"
        "\xf0\xe0\xf2\xfb\xbc\xe8\xed\x74\x6d\xdf\x2a\x3b\x19\x94\xc1\xce\xbb"
        "\x4c\x58\xff\xc5\xea\x95\xeb\xb1\x16\x76\x9e\xbe\xa0\xb4\x79\x7a\x30"
        "\x6c\xe5\xb1\x35\xee\x65\xd4\x06\x1b\xee\xf1\xbf\x91\x2a\xb8\x95\xc1"
        "\x0a\xce\x1b\xec\x31\xb7\xe6\x3a\x77\x41\x3a\x9f\xd3\xe3\xe7\xe4\xea"
        "\xfd\x28\xcf\x39\x61\xea\xfa\xa6\x3b\x5c\xff\x07\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x38\x6d\x8a\x7d\x1f\x60\x29\x6a"
        "\x3d\xde\xd7\x09\x4a\x1e\x22\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\xa7\xde\x5f\xdc\xff\x37\x29\xf3\xfe\xbf"
        "\xb1\x5f\xf5\x1e\x7e\xff\x5f\xf7\x2b\xdd\x05\xee\xff\x0b\x60\x02\xfe"
        "\x04\x00\x00\xff\xff\x99\xb8\x77\x9b",
        672));
    NONFAILING(syz_mount_image(
        /*fs=*/0x200000c0, /*dir=*/0x20000140, /*flags=*/0x81041a,
        /*opts=*/0x200001c0, /*chdir=*/7, /*size=*/0x2a0, /*img=*/0x20000840));
    break;
  case 2:
    NONFAILING(memcpy((void*)0x20000000, "cpu.stat\000", 9));
    res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000000ul,
                  /*flags=*/0x275aul, /*mode=*/0ul);
    if (res != -1)
      r[0] = res;
    break;
  case 3:
    syscall(__NR_write, /*fd=*/r[0], /*data=*/0x200001c0ul,
            /*len=*/0x208e24bul);
    break;
  case 4:
    syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0xb36000ul,
            /*prot=*/0x800001ul, /*flags=*/0x28011ul, /*fd=*/r[0],
            /*offset=*/0ul);
    break;
  case 5:
    NONFAILING(memcpy((void*)0x20000180, "/dev/vcsu\000", 10));
    syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000180ul,
            /*flags=*/0xf0ul, /*mode=*/0ul);
    break;
  case 6:
    NONFAILING(memcpy((void*)0x20000000, "cpu.stat\000", 9));
    syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000000ul,
            /*flags=*/0x275aul, /*mode=*/0ul);
    break;
  case 7:
    syscall(__NR_write, /*fd=*/r[0], /*data=*/0x200001c0ul,
            /*len=*/0x208e24bul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/7ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  install_segv_handler();
  use_temporary_dir();
  loop();
  return 0;
}