// https://syzkaller.appspot.com/bug?id=67f74abd157e41c3c7e90b0a7100f34d9932d099
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/futex.h>
#include <linux/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

static unsigned long long procid;

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static void 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()
{
  char mypid[32];
  snprintf(mypid, sizeof(mypid), "%d", getpid());
  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", mypid},
  };
  for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
    if (!write_file(files[i].name, files[i].data))
      printf("write to %s failed: %s\n", files[i].name, strerror(errno));
  }
}

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 < 10; 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) + (call == 2 ? 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 (;;) {
      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;
    }
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    memcpy((void*)0x20000080, "ext4\000", 5);
    memcpy((void*)0x200000c0,
           "./"
           "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
           "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
           "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
           "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000",
           253);
    *(uint8_t*)0x20002b40 = 0;
    memcpy(
        (void*)0x20000cc0,
        "\x78\x9c\xec\xdd\xcf\x6b\x1c\xe5\x1b\x00\xf0\x67\x36\xd9\x26\x4d\xfb"
        "\xfd\x26\x82\xa0\xf5\x14\x10\x34\x50\x9a\x98\x1a\x5b\x05\x0f\x15\x0f"
        "\x22\x58\x28\xe8\xd9\x1a\x92\x6d\x88\xd9\x64\x4b\x76\x53\x9a\x10\x68"
        "\x8b\x08\x5e\x04\x15\x0f\x82\x5e\x7a\xf6\x47\xbd\x79\x13\x7f\x5c\xf5"
        "\xbf\xf0\x20\x2d\x55\xd3\x62\xc5\x83\xac\xcc\x66\x36\xdd\x34\xbb\x4d"
        "\xd2\x6e\xb2\xad\xf9\x7c\x60\xda\xf7\x9d\x79\x77\x9f\x79\x76\xde\x99"
        "\x79\xb3\x33\xec\x04\xb0\x67\x0d\xa6\xff\xe4\x22\x0e\x45\xc4\x07\x49"
        "\x44\x7f\x36\x3f\x89\x88\x7c\xad\xd4\x1d\x71\x62\xb5\xdd\xad\x95\xe5"
        "\x89\x74\x4a\xa2\x5a\x7d\xfd\xf7\xa4\xd6\xe6\xe6\xca\xf2\x44\x34\xbc"
        "\x26\x75\x20\xab\x3c\x1e\x11\x3f\xbc\x1b\x71\x38\xb7\x31\x6e\x79\x71"
        "\x69\x66\xbc\x58\x2c\xcc\x67\xf5\x91\xca\xec\xd9\x91\xf2\xe2\xd2\x91"
        "\xe9\xd9\xf1\xa9\xc2\x54\x61\xee\xd8\xe8\xd8\xd8\xd1\xe3\xcf\x1d\x3f"
        "\xd6\xbe\x5c\xff\xfc\x79\xe9\xe0\xb5\x0f\x5f\x79\xfa\xab\x13\x7f\xbf"
        "\xf3\xd8\x95\xf7\x7f\x4c\xe2\x44\x1c\xcc\x96\x35\xe6\xd1\x2e\x83\x31"
        "\x98\x7d\x26\xf9\xf4\x23\x5c\xe7\xe5\x76\x07\xeb\xb0\xa4\xd3\x2b\xc0"
        "\x3d\x49\x77\xcd\xae\xd5\xbd\x3c\x0e\x45\x7f\x74\xd5\x4a\x00\xc0\x7f"
        "\xd9\x85\x88\xa8\x6e\xa2\x3e\xb6\xdb\xac\x1d\x00\xf0\xb0\x48\x9c\xd7"
        "\x01\x60\x8f\xa9\x7f\x0f\x70\x73\x65\x79\xa2\x3e\x75\xee\xdb\x88\xdd"
        "\x77\xfd\xa5\x88\xe8\x5d\xcd\xbf\x7e\x7d\x73\x75\x49\x77\x76\xcd\xae"
        "\xb7\x76\x1d\xb4\xef\x66\xb2\xee\xca\x48\x12\x11\x03\x6d\x88\x3f\x18"
        "\x11\x9f\x7d\xf3\xe6\x17\xe9\x14\x3b\x74\x1d\x12\xa0\x99\x8b\xdf\x66"
        "\x85\x0d\xc7\xff\x64\xc3\x3d\x0b\xdb\xf5\xcc\x16\xda\x0c\xde\x51\x77"
        "\xfc\x83\xdd\xf3\x5d\x3a\xfe\x79\xbe\xd9\xf8\x2f\xb7\x36\xfe\x89\x26"
        "\xe3\x9f\x9e\x26\xfb\xee\xbd\xd8\x7c\xff\xcf\x5d\x6d\x43\x98\x96\xd2"
        "\xf1\xdf\x8b\x0d\xf7\xb6\xdd\x6a\xc8\x3f\x33\xd0\x95\xd5\xfe\x57\x1b"
        "\xf3\xe5\x93\x33\xd3\xc5\x42\x7a\x6c\xfb\x7f\x44\x0c\x45\xbe\x27\xad"
        "\x8f\xde\x25\xc6\xd0\x8d\x7f\x6e\xb4\x5a\xd6\x38\xfe\xfb\xe3\xa3\xb7"
        "\x3f\x4f\xe3\xa7\xff\xdf\x6e\x91\xbb\xda\xdd\xb3\xfe\x35\x93\xe3\x95"
        "\xf1\xfb\xc9\xb9\xd1\xf5\x4b\x11\x4f\x74\x37\xcb\x3f\x59\xdb\xfe\x49"
        "\x8b\xf1\xef\xa9\x2d\xc6\x78\xf5\x85\xf7\x3e\x6d\xb5\x2c\xcd\x3f\xcd"
        "\xb7\x3e\x6d\xcc\x7f\x67\x55\x2f\x47\x3c\xd5\x64\xfb\xe7\x1b\xda\x24"
        "\x77\xbd\x3f\x71\xa4\xd6\x1d\x46\xea\x9d\xa2\x89\xaf\x7f\xf9\xa4\xaf"
        "\x55\xfc\xc6\xed\x9f\x4e\x69\xfc\xfa\xdf\x02\x75\x97\xda\x96\xed\x46"
        "\xe9\xf6\xef\x6b\xda\xff\xd7\xee\xe8\x1b\x48\x1a\xef\xd7\x2c\x6f\x3f"
        "\xc6\x4f\x97\xfb\xbf\x6f\xb5\x6c\xf3\xfc\x9b\xf7\xff\x7d\xc9\x1b\xb5"
        "\xf2\xbe\x6c\xde\xf9\xf1\x4a\x65\x7e\x34\x62\x5f\xf2\xda\xc6\xf9\x47"
        "\x6f\xbf\xb6\x5e\xaf\xb7\x4f\xf3\x1f\x7a\xb2\x96\xff\xfe\xac\xc9\x86"
        "\xe3\x5f\xb3\xfe\x9f\xf6\x8f\xb7\x36\x4b\x3c\x5b\x89\xee\x6b\xbf\x7d"
        "\x79\xef\xf9\xef\xac\x34\xff\xc9\x6d\x6d\xff\xed\x17\xae\xdc\x9a\xe9"
        "\x6a\x15\x7f\x6b\xdb\x7f\xac\x56\x1a\xca\xe6\x6c\xe5\xf8\x77\xf7\xf5"
        "\xca\xdf\x47\x6f\x06\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x80\xed\xcb\x45\xc4\xc1\x48\x72\xc3\x6b\xe5"
        "\x5c\x6e\x78\x78\xf5\x19\xde\x8f\x46\x5f\xae\x58\x2a\x57\x0e\x9f\x29"
        "\x2d\xcc\x4d\x46\xed\x59\xd9\x03\x91\xcf\xd5\x7f\xea\xb2\xbf\xe1\xf7"
        "\x50\x47\xb3\xdf\xc3\xaf\xd7\x8f\xde\x51\x7f\x36\x22\x1e\x89\x88\x8f"
        "\x7b\xf6\x27\x67\xa6\x7b\x3b\x9d\x36\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\xac\x73\xa0\xc5\xf3\xff\x53\xbf\xf6\x74\x7a"
        "\xed\x00\x80\x1d\xd3\xdb\xe9\x15\x00\x00\x76\x9d\xf3\x3f\x00\xec\x3d"
        "\xdb\x3d\xff\x1b\x2f\x00\xc0\xc3\xcf\xf9\x1c\x00\xf6\x1e\xe7\x7f\x00"
        "\xd8\x7b\x9c\xff\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\xd8\x61\xa7\x4e\x9e\x4c\xa7\xea\x5f\x2b\xcb\x13\x69"
        "\x7d\xf2\xdc\xe2\xc2\x4c\xe9\xdc\x91\xc9\x42\x79\x66\x78\x76\x61\x62"
        "\x78\xa2\x34\x7f\x76\x78\xaa\x54\x9a\x2a\x16\x86\x27\x4a\xb3\x9b\xbd"
        "\x5f\xb1\x54\x3a\x3b\x16\x73\x0b\xe7\x47\x2a\x85\x72\x65\xa4\xbc\xb8"
        "\x74\x7a\xb6\xb4\x30\x57\x39\x3d\x3d\x3b\x3e\x55\x38\x5d\xc8\xef\x4a"
        "\x56\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xb0\x3d"
        "\xe5\xc5\xa5\x99\xf1\x62\xb1\x30\xaf\xf0\xe0\x17\xf2\x11\xd1\xa1\xe8"
        "\xd5\x6a\xf5\xc2\x83\xf1\x21\x28\x34\x2b\x5c\xcc\xf6\xe7\xf6\xbd\x73"
        "\x87\x0f\x4c\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0f\x89\x7f\x03\x00\x00\xff\xff"
        "\x72\x73\x16\x22",
        1925);
    syz_mount_image(/*fs=*/0x20000080, /*dir=*/0x200000c0,
                    /*flags=MS_LAZYTIME|MS_NOATIME|MS_DIRSYNC*/ 0x2000480,
                    /*opts=*/0x20002b40, /*chdir=*/3, /*size=*/0x785,
                    /*img=*/0x20000cc0);
    break;
  case 1:
    memcpy((void*)0x200001c0, "./file0\000", 8);
    syscall(__NR_chdir, /*dir=*/0x200001c0ul);
    break;
  case 2:
    memcpy((void*)0x200000c0, "vfat\000", 5);
    memcpy((void*)0x20003200, "./file2\000", 8);
    memcpy(
        (void*)0x20000c00,
        "\x78\x9c\xec\xdc\xcb\x6b\x2b\x55\x1c\xc0\xf1\x5f\x1e\xcd\xab\xb4\xc9"
        "\x42\x14\x05\xe9\x41\x37\xba\x19\xda\xe8\x5a\x0c\xd2\x82\x18\xb0\xb4"
        "\x8d\xd8\x0a\xc2\xb4\x9d\x68\xc8\x98\x94\x4c\xa8\x44\xc4\xb6\x2b\xb7"
        "\xe2\xde\x95\xe0\xa2\x74\xd9\x5d\x41\xfb\x0f\x64\xe3\x4e\x37\x6e\xdc"
        "\x75\x73\xe1\x2e\x6e\x17\x97\x3b\x97\x99\xcc\x24\x93\x57\x9b\xa6\x8f"
        "\xf4\xb6\xdf\x0f\x94\x9c\x9c\x73\x7e\x99\x73\x72\x4e\xcb\x6f\x86\xce"
        "\x9c\x7d\xf9\xcb\x77\xe5\xa2\xa5\x15\xf5\xba\x84\x13\x4a\x42\x22\x22"
        "\xe7\x22\x19\x09\x8b\x2f\xe4\xbd\x86\xdd\x72\x4c\x82\xf6\xe5\xfd\xe9"
        "\xa7\xff\xbc\xbd\xba\xbe\xf1\x59\x2e\x9f\x5f\x5c\x51\x6a\x29\xb7\xf6"
        "\x41\x56\x29\x35\x3b\xf7\xe7\xf7\x3f\x26\xbd\x6e\x27\x71\x69\x66\xbe"
        "\x3e\x7b\x92\xfd\xbf\xf9\x7a\xf3\xcd\xb3\x17\x6b\xdf\x96\x2c\x55\xb2"
        "\x54\xa5\x5a\x57\xba\xda\xac\xfe\x57\xd7\x37\x4d\x43\x6d\x97\xac\xb2"
        "\xa6\xd4\xb2\x69\xe8\x96\xa1\x4a\x15\xcb\xa8\xb5\xda\xab\xad\xf6\xa2"
        "\x59\xdd\xd9\x69\x28\xbd\xb2\x3d\x93\xda\xa9\x19\x96\xa5\xf4\x4a\x43"
        "\x95\x8d\x86\xaa\x57\x55\xbd\xd6\x50\xfa\x37\x7a\xa9\xa2\x34\x4d\x53"
        "\x33\x29\x79\x8c\xa6\xae\xd4\xbb\x70\xb8\xb2\xa2\xe7\xc6\x3c\xd4\xd6"
        "\x98\x71\xb8\x63\xb5\x5a\x4e\x8f\x88\x48\xb2\xaf\xa5\x70\x38\x91\x01"
        "\x01\x00\x80\x89\x72\xf2\x82\x60\xfe\x1f\x76\x52\xfa\xb1\xf2\x7f\x99"
        "\x75\xf3\x7f\xa7\x73\x27\xff\x3f\x7a\xe7\xb4\x3e\xfd\xc5\xf1\xac\x97"
        "\xff\x9f\xc4\x06\xe5\xff\x1f\xfe\xdb\xfa\xac\xae\xfc\x3f\x21\x22\xe3"
        "\xe4\xff\xbf\xc9\x15\xf2\xff\xfe\x8c\xe8\x41\xeb\x3b\x39\xb8\x56\xfe"
        "\x8f\xfb\x61\x2e\xd6\x57\x15\xea\x7a\xe7\xe4\xff\x29\xef\xf7\xd7\x75"
        "\xf0\xd5\xd1\xbc\x5b\x20\xff\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\xe0\x55\x70\x6e\xdb\x69\xdb\xb6\xd3\xfe"
        "\xab\xff\xd3\xb9\x85\xc0\x7b\x8f\x07\x69\xd8\xfa\xc7\x45\x24\xe1\xac"
        "\xbe\xcd\xfa\x3f\x64\xab\xeb\x1b\x92\x70\x6f\xdc\x73\xd6\xd8\xfc\x79"
        "\xb7\xb0\x5b\x68\xbd\x7a\x1d\x4e\x45\xc4\x14\x43\xe6\x25\x2d\xcf\xdd"
        "\xfd\xe0\x71\xca\xfe\x9d\x47\xca\x91\x91\xbf\xcc\x3d\x2f\x7e\x6f\xb7"
        "\x10\x71\x5b\x72\x45\x29\xb9\xf1\x0b\x92\x96\x4c\x6f\xbc\x6d\x2f\x7d"
        "\x9a\x5f\x5c\x50\x2d\x5e\x7c\xfb\x36\xa5\x54\x30\x3e\x2b\x69\x79\x6d"
        "\x70\x7c\xb6\x3b\xde\x3b\x7e\x4c\xde\x7b\x37\x10\xaf\x49\x5a\xfe\xde"
        "\x92\xaa\x98\xb2\xed\xee\xeb\x4e\xfc\x4f\x0b\x4a\x7d\xf2\x79\xbe\x27"
        "\x3e\xe9\xf6\x6b\x8b\xdf\xe1\xa2\x00\x00\x00\x00\x00\x70\xc3\x34\xd5"
        "\x36\xf0\xfc\x5d\xd3\x86\xb5\xb7\x9e\x32\x92\x2b\xba\x97\x89\x86\x5c"
        "\x1f\x68\x9d\x5f\xcf\x0f\x3c\x3f\x8f\xa6\xdf\x6a\x4e\x7a\xf6\x00\x00"
        "\x00\x00\x00\x3c\x0e\x56\xe3\x87\xb2\x6e\x9a\x46\xed\x82\x42\x52\x2e"
        "\xef\x33\x7e\x21\x3a\x5a\xe7\x98\x5b\xf0\xff\xe1\xa0\xac\x4f\x5d\xd4"
        "\x39\x12\x98\xe1\xa8\xe3\x89\xb9\x17\x32\x44\xae\x3b\xaf\xdf\x47\xfc"
        "\x56\xbb\x0a\x9d\x79\x05\x9a\x12\x5e\xe5\x78\xe3\xf1\xe7\x7f\x63\xeb"
        "\xb5\x1f\xac\x09\xcb\x08\x51\xd1\xde\xc1\xcf\x39\x15\xea\x8a\x47\x3f"
        "\xf0\x26\xd2\xae\x89\x7a\x15\xb1\x21\xdf\xb3\x2c\xf7\x7f\x4e\xf8\x82"
        "\x9d\x30\x75\x63\xfb\xf9\x8d\x5f\xff\x78\x36\x4a\xe7\x78\x70\x3a\x43"
        "\x0b\x1f\x1d\xfb\x3b\xe0\xf2\xa3\x1f\x8c\x3b\xe6\x44\xcf\xae\x3b\x72"
        "\x07\xe6\x3f\x29\x3a\x72\x5b\x7f\x77\x00\x00\x00\x00\xdc\xbd\xce\xf9"
        "\x80\x5f\xf3\x71\xb0\x39\x34\x91\x41\x01\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf0\xc8"
        "\xdc\xca\x23\xfd\x7a\x0a\x93\x9e\x23\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x70\x5f\xbc\x0c\x00\x00\xff\xff\x65\x63\xf1\x39",
        830);
    syz_mount_image(/*fs=*/0x200000c0, /*dir=*/0x20003200,
                    /*flags=MS_REC|MS_NODEV|0x200*/ 0x4204, /*opts=*/0x20003240,
                    /*chdir=*/6, /*size=*/0x33e, /*img=*/0x20000c00);
    break;
  case 3:
    memcpy((void*)0x200005c0, "./bus\000", 6);
    syscall(__NR_open, /*file=*/0x200005c0ul,
            /*flags=O_SYNC|O_NONBLOCK|O_NOATIME|O_DIRECT|O_CREAT|0x2002*/
            0x147842ul, /*mode=*/0ul);
    break;
  case 4:
    memcpy((void*)0x20000380, "/dev/loop", 9);
    *(uint8_t*)0x20000389 = 0x30 + procid * 1;
    *(uint8_t*)0x2000038a = 0;
    memcpy((void*)0x20000140, "./bus\000", 6);
    syscall(__NR_mount, /*src=*/0x20000380ul, /*dst=*/0x20000140ul,
            /*type=*/0ul, /*flags=MS_BIND*/ 0x1000ul, /*data=*/0ul);
    break;
  case 5:
    memcpy((void*)0x20000000, "./bus\000", 6);
    res = syscall(__NR_open, /*file=*/0x20000000ul,
                  /*flags=O_SYNC|O_NOCTTY|O_NOATIME|O_RDWR|0x3c*/ 0x14113eul,
                  /*mode=*/0ul);
    if (res != -1)
      r[0] = res;
    break;
  case 6:
    memcpy((void*)0x200001c0, "cgroup.controllers\000", 19);
    syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200001c0ul,
            /*flags=*/0x275aul, /*mode=*/0ul);
    break;
  case 7:
    syscall(__NR_read, /*fd=*/r[0], /*buf=*/0x20001700ul, /*len=*/0x2020ul);
    break;
  case 8:
    memcpy((void*)0x20000080, "#! ", 3);
    *(uint8_t*)0x20000083 = 0xa;
    syscall(__NR_write, /*fd=*/r[0], /*data=*/0x20000080ul,
            /*len=*/0x208e24bul);
    break;
  case 9:
    memcpy((void*)0x20000580,
           "./"
           "file1aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
           "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
           "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
           "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000",
           247);
    syz_mount_image(/*fs=*/0, /*dir=*/0x20000580, /*flags=*/0, /*opts=*/0,
                    /*chdir=*/0, /*size=*/0, /*img=*/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();
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}