// https://syzkaller.appspot.com/bug?id=19dc6f10777fbb1b30af85af5e77cac6732d6a8a
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.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/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 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 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[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  memcpy((void*)0x20000600, "hfsplus\000", 8);
  memcpy((void*)0x20000640, "./file1\000", 8);
  memcpy(
      (void*)0x2001f6c0,
      "\x78\x9c\xec\xdd\x4f\x6f\x1c\x67\x1d\x07\xf0\xef\xae\xff\x64\x1d\xa4\xd4"
      "\x75\x93\x36\xa0\x4a\x58\x45\xaa\x10\x16\x89\xd7\x96\x48\xe1\x42\x29\x05"
      "\x59\xa8\x42\x95\x38\x70\xe1\x62\x11\xa7\xb1\xb2\x49\x2b\x7b\x8b\xdc\x1e"
      "\x68\x40\x1c\x2a\x4e\x7d\x09\xe5\xe0\x37\x80\x38\x16\x29\x07\xda\x23\x9c"
      "\x2a\x71\x33\xea\x11\x89\xbb\x6f\x46\x33\x3b\xe3\xdd\xc4\xdb\xd4\x8e\xd7"
      "\xd9\x4d\xf3\xf9\x48\xb3\xcf\xf3\xec\x33\xf3\xec\xef\xf9\xcd\xec\x64\x66"
      "\xac\x68\x03\x3c\xb5\xd6\x96\x32\x7d\x2f\x8d\xac\x2d\xbd\xb1\x53\xb4\xf7"
      "\x76\x57\x3b\x7b\xbb\xab\xb7\xeb\x7a\x92\x73\x49\x9a\x49\x2b\x49\xa3\x78"
      "\xfb\x6f\x49\xbe\x48\xee\xa6\xb7\xe4\x9b\x75\xc7\x40\x79\xc4\xe7\x9f\xb4"
      "\xde\xfa\xec\xa3\x4f\x3f\xec\xb5\x5a\xd5\x52\xae\xdf\x78\xd8\x76\xc7\x73"
      "\x18\xcb\x7c\x2f\xd6\xb2\x1c\xd5\x78\x2b\xa7\x1e\xaf\x9c\x5d\xab\x6e\x2d"
      "\x24\x59\x3c\x5d\x7c\x30\x1a\x07\xb5\xff\x0c\xed\x3e\xe5\xf7\x12\x00\x98"
      "\x64\x8d\x64\x6a\xd8\xfb\xf3\xc9\xf9\xea\xe2\xb5\xb8\x0f\xe8\x5d\x15\xf7"
      "\xae\xb1\x9f\x68\x77\xc7\x1d\x00\x00\x00\x00\x3c\x06\xcf\xec\x67\x3f\x3b"
      "\xb9\x30\xee\x38\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe0\x49\x52\xfd\xfe"
      "\x7f\xa3\x5a\x9a\x75\x7d\x31\x8d\xfa\xf7\xff\x67\xab\xf7\x52\xd5\x9f\x68"
      "\xf7\xc6\x1d\x00\x00\x00\x00\x00\x00\x00\x00\x8c\xc0\xb7\xf7\xb3\x9f\x9d"
      "\x5c\xa8\xdb\x07\x8d\xf2\x6f\xfe\x2f\x95\x8d\x8b\xe5\xeb\x37\xf2\x6e\xb6"
      "\xb3\x91\xad\x5c\xc9\x4e\xd6\xd3\x4d\x37\x5b\x69\x27\x99\x1f\x18\x68\x76"
      "\x67\xbd\xdb\xdd\x6a\x1f\x63\xcb\x95\xa1\x5b\xae\x3c\x9e\xf9\x02\x00\x00"
      "\x00\x00\x00\x00\xc0\xd7\xd4\x1f\xb3\xd6\xff\xfb\x3f\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x4c\x82\x46\x32\xd5\x2b\xca\xe5\x62\x5d\x9f\x4f"
      "\x73\x3a\x49\x2b\xc9\x6c\xb1\xde\xdd\xe4\x5f\x75\x7d\xb2\xcc\x9c\x68\xed"
      "\x57\xcf\x2c\x0e\x00\x00\x00\x98\x1c\xcf\xec\x67\x3f\x3b\xb9\x50\xb7\x0f"
      "\x1a\xe5\x3d\xff\xf3\xe5\x7d\x7f\x2b\xef\xe6\x4e\xba\xd9\x4c\x37\x9d\x6c"
      "\xe4\x7a\xf9\x2c\xa0\x77\xd7\xdf\xdc\xdb\x5d\xed\xec\xed\xae\xde\x2e\x96"
      "\xa3\xe3\xfe\xe4\x7f\x27\x0a\xa3\x1c\x31\xbd\x67\x0f\xc3\x3f\xf9\x72\xb9"
      "\xc6\x5c\x6e\x64\xb3\x7c\xe7\x4a\x7e\x9b\xb7\xd3\xc9\xf5\x34\xcb\x2d\x0b"
      "\x97\xeb\x78\x86\xc7\xf5\x87\x22\xa6\xc6\x8f\x2b\xc7\x8c\xec\x7a\x55\x16"
      "\x33\xff\x45\x55\x4e\x86\xf9\x32\x23\x33\x87\x19\x59\xae\x62\x2b\xb2\xf1"
      "\xec\xc3\x33\x71\xc2\xbd\xf3\xe0\x27\xb5\xd3\x3c\x7c\xf2\x73\xf1\x0c\x72"
      "\x7e\xbe\x2a\x8b\xf9\xbc\x3e\xd1\x39\x5f\x19\x38\xfa\x9e\x7f\x78\x26\x92"
      "\x85\x5f\xff\xf9\xda\xcd\xce\x9d\x5b\x37\x6f\x6c\x2f\x4d\xce\x94\x1e\xd1"
      "\x83\x99\x58\x1d\xc8\xc4\x0b\x4f\x55\x26\x96\xcb\x4c\x5c\x3a\x6c\xaf\xe5"
      "\xe7\xf9\x55\x96\xb2\x98\x37\xb3\x95\xcd\xfc\x2e\xeb\xe9\x66\x23\x8b\x79"
      "\xbd\xac\xad\x57\xc7\x73\xf1\x3a\xbf\xb7\xbb\x7a\xd0\xf3\xc1\x90\x4c\xbd"
      "\x7a\xdf\xf3\xd5\x37\xbf\x2a\x92\xd9\x6a\xbf\xf4\xce\xa2\x27\x8b\xe9\xa5"
      "\x72\xdb\x0b\xd9\xcc\x2f\xf3\x76\xae\x97\x7b\x74\x39\xd7\x72\x2d\x2b\xf9"
      "\x41\x7e\x98\xe5\xfb\xf6\xf0\xa5\xa1\x7b\xf8\x83\x83\xaa\xbb\xfc\xd6\x37"
      "\x4f\xf6\xad\xff\xce\x77\xab\xca\x4c\x92\x9f\x9d\xf8\x41\xee\x59\x2a\xf2"
      "\xfa\xec\x40\x5e\x07\xcf\xb9\xf3\x65\xdf\xe0\x3b\xfd\x2c\x2d\x8c\xfe\xdc"
      "\x38\xfd\xad\xaa\x52\x1c\x3d\xaf\x4d\xdc\xb9\xb1\x9f\x89\x99\xf2\x5f\x89"
      "\x3a\x13\xcf\x3d\x98\x89\xfb\x77\xee\x5f\xca\x03\x67\xbb\x73\xe7\xd6\xd6"
      "\xcd\xf5\x77\x8e\xf9\x79\x2f\x57\x65\x91\x81\x9f\x1e\xc9\xc4\xc1\xd4\xe9"
      "\x67\xf4\xa8\x8a\xe3\x65\xa1\xd8\x59\x65\xeb\xfe\xa3\xa3\xe8\x7b\x6e\x68"
      "\x5f\xbb\xec\xbb\x78\xd8\xd7\x3c\xd2\x77\xe9\xb0\xef\xab\xbe\xa9\xb3\xd5"
      "\x35\xdc\xd1\x91\x56\xca\xbe\x17\x86\xf6\xf5\xb6\xbb\x3c\xd0\x37\xec\x7a"
      "\x0b\x80\x89\x77\xfe\x7b\xe7\x67\xe7\xfe\x3b\xf7\xcf\xb9\x8f\xe7\xfe\x34"
      "\x77\x73\xee\x8d\xd6\x6b\xe7\x5e\x39\xf7\xe2\x6c\x66\xfe\x31\xf3\xa3\xe9"
      "\xe5\xa9\x97\x9b\x2f\x36\xfe\x9a\x8f\xf3\xfb\xfe\xfd\x3f\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\xf0\xe8\xb6\xdf\x7b\xff\xd6\x7a\xa7\xb3\xb1\xa5\xa2\xf2\xf4\x55\x16"
      "\x93\x8c\x66\xc0\xc5\x49\x98\xce\x08\x2b\xe7\xc6\x7d\x66\x02\xce\xda\xd5"
      "\xee\xed\x77\xae\x6e\xbf\xf7\xfe\xf7\x37\x6f\xaf\xd7\xbf\xda\xf7\x4a\xbb"
      "\xdd\xbe\xb6\x7c\xf5\xc6\x66\x67\xa3\x7a\x1d\x77\x94\x00\xc0\x28\xf5\x2f"
      "\xfa\xc7\x1d\x09\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf0\x65\x1e"
      "\xc7\x7f\x27\x1e\xf7\x1c\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x80\xaf\xb7\xb5\xa5\x4c\xdf\x4b\x23\xed\xe5\x2b\xcb"
      "\x45\x7b\x6f\x77\xb5\x53\x2c\x75\xbd\xbf\x66\x2b\x49\xa3\xa8\xfc\x3d\xf9"
      "\xf7\x17\xc9\xdd\xf4\x96\xcc\xe7\x37\x53\xf5\x4a\x8d\x2f\xfb\x9c\xcf\x3f"
      "\x69\xbd\xf5\xd9\x47\x9f\x7e\xd8\x1f\xab\x55\xaf\xdf\x78\xd8\x76\xc7\x33"
      "\x10\x4b\xd2\xac\xca\x51\x8d\xb7\x72\xea\xf1\xfa\x33\x5c\x4c\xb2\x50\x95"
      "\x30\x76\xff\x0f\x00\x00\xff\xff\x6e\xc3\x04\xba",
      1524);
  syz_mount_image(
      /*fs=*/0x20000600, /*dir=*/0x20000640,
      /*flags=MS_SYNCHRONOUS|MS_STRICTATIME|MS_SILENT|MS_NODIRATIME*/ 0x1008810,
      /*opts=*/0x20002600, /*chdir=*/1, /*size=*/0x5f4, /*img=*/0x2001f6c0);
  res = syscall(__NR_socket, /*domain=*/1ul, /*type=SOCK_STREAM*/ 1ul,
                /*proto=*/0);
  if (res != -1)
    r[0] = res;
  *(uint16_t*)0x20000040 = 1;
  memcpy(
      (void*)0x20000042,
      "\351\037q\211Y\036\2223aK\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000",
      108);
  syscall(__NR_bind, /*fd=*/r[0], /*addr=*/0x20000040ul, /*addrlen=*/0x6eul);
  memcpy((void*)0x200000c0, "msdos\000", 6);
  memcpy((void*)0x20000980,
         "./"
         "file1aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
         "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000",
         108);
  sprintf((char*)0x200002c0, "%020llu", (long long)-1);
  memcpy((void*)0x200002d4,
         "\x20\xa9\xc7\xc5\xcd\x33\x52\x76\xdb\xd8\xc4\xda\x4a\xfc\x82\x51\x9f"
         "\xc1\xa9\x05\x72\x71\x6b\x8e\x22\x3a\x8a\x34\x31\x9b\x95\x9a\x85\xe3",
         34);
  syz_mount_image(
      /*fs=*/0x200000c0, /*dir=*/0x20000980,
      /*flags=MS_UNBINDABLE|MS_POSIXACL|MS_SILENT|MS_REMOUNT|MS_RDONLY|0xc06*/
      0x38c27, /*opts=*/0x200002c0, /*chdir=*/0xb, /*size=*/0,
      /*img=*/0x20000000);
  memcpy((void*)0x20000040, ".\000", 2);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000040ul,
                /*flags=*/0ul, /*mode=*/0ul);
  if (res != -1)
    r[1] = res;
  memcpy((void*)0x20000180, "./file1\000", 8);
  memcpy((void*)0x20000640, "./bus\000", 6);
  syscall(__NR_linkat, /*oldfd=*/r[1], /*old=*/0x20000180ul, /*newfd=*/r[1],
          /*new=*/0x20000640ul, /*flags=*/0ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}