// https://syzkaller.appspot.com/bug?id=cfcd564d1a32fcb10bc54f1dcbd9b2bd0afa0948
// 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  memcpy((void*)0x200000000040, "ext4\000", 5);
  memcpy((void*)0x200000000000, "./file1\000", 8);
  memcpy((void*)0x200000000380, "delalloc", 8);
  *(uint8_t*)0x200000000388 = 0x2c;
  memcpy((void*)0x200000000389, "data_err=abort", 14);
  *(uint8_t*)0x200000000397 = 0x2c;
  memcpy((void*)0x200000000398, "barrier", 7);
  *(uint8_t*)0x20000000039f = 0x3d;
  sprintf((char*)0x2000000003a0, "0x%016llx", (long long)2);
  *(uint8_t*)0x2000000003b2 = 0x2c;
  memcpy((void*)0x2000000003b3, "dioread_lock", 12);
  *(uint8_t*)0x2000000003bf = 0x2c;
  memcpy((void*)0x2000000003c0, "data_err=ignore", 15);
  *(uint8_t*)0x2000000003cf = 0x2c;
  memcpy((void*)0x2000000003d0, "max_dir_size_kb", 15);
  *(uint8_t*)0x2000000003df = 0x3d;
  sprintf((char*)0x2000000003e0, "0x%016llx", (long long)0x4007b1);
  *(uint8_t*)0x2000000003f2 = 0x2c;
  memcpy((void*)0x2000000003f3, "data_err=ignore", 15);
  *(uint8_t*)0x200000000402 = 0x2c;
  memcpy((void*)0x200000000403, "grpquota", 8);
  *(uint8_t*)0x20000000040b = 0x2c;
  memcpy((void*)0x20000000040c, "nobh", 4);
  *(uint8_t*)0x200000000410 = 0x2c;
  memcpy((void*)0x200000000411, "user_xattr", 10);
  *(uint8_t*)0x20000000041b = 0x2c;
  memcpy((void*)0x20000000041c, "bh", 2);
  *(uint8_t*)0x20000000041e = 0x2c;
  memcpy((void*)0x20000000041f, "dioread_nolock", 14);
  *(uint8_t*)0x20000000042d = 0x2c;
  *(uint8_t*)0x20000000042e = 0;
  memcpy(
      (void*)0x200000000a40,
      "\x78\x9c\xec\xdd\xdf\x6b\x5b\x55\x1c\x00\xf0\xef\x4d\xdb\xfd\xd6\x75\x30"
      "\x86\x8a\x48\x61\x0f\x4e\xe6\xd2\xb5\xf5\xc7\x04\x1f\xe6\xa3\xe8\x70\xa0"
      "\xef\x33\xb4\x77\x65\x34\x59\x46\x93\x8e\xb5\x0e\xdc\x1e\xdc\x8b\x2f\x32"
      "\x04\x11\x07\xe2\xbb\xbe\xfb\x38\xfc\x07\xfc\x2b\x06\x3a\x18\x32\x8a\x3e"
      "\xf8\x12\xb9\xe9\x4d\x97\xad\x49\x9b\x75\xd9\xd2\x99\xcf\x07\x6e\x39\x27"
      "\xf7\x26\xe7\x7e\x73\xef\xf7\xf4\xdc\x9c\x1b\x12\xc0\xd0\x9a\xc8\xfe\x14"
      "\x22\x5e\x8e\x88\x6f\x92\x88\x83\x11\x91\xe4\xeb\x46\x23\x5f\x39\xb1\xb6"
      "\xdd\xea\xfd\xab\xb3\xd9\x92\x44\xa3\xf1\xe9\x5f\x49\x73\xbb\xac\xde\x7a"
      "\xad\xd6\xf3\xf6\xe7\x95\x97\x22\xe2\xb7\xaf\x22\x8e\x17\x36\xb6\x5b\x5b"
      "\x5e\x59\x28\x95\xcb\xe9\x62\x5e\x9f\xac\x57\x2e\x4d\xd6\x96\x57\x4e\x5c"
      "\xa8\x94\xe6\xd3\xf9\xf4\xe2\xf4\xcc\xcc\xa9\xb7\x67\xa6\xdf\x7b\xf7\x9d"
      "\xbe\xc5\xfa\xc6\xd9\x7f\xbe\xff\xe4\xf6\x87\xa7\xbe\x3e\xba\xfa\xdd\x2f"
      "\x77\x0f\xdd\x4c\xe2\x74\x1c\xc8\xd7\xb5\xc7\xf1\x04\xae\xb5\x57\x26\x62"
      "\x22\x7f\x4f\xc6\xe2\xf4\x23\x1b\x4e\xf5\xa1\xb1\x9d\x24\x19\xf4\x0e\xb0"
      "\x2d\x23\x79\x9e\x8f\x45\xd6\x07\x1c\x8c\x91\x3c\xeb\x81\xff\xbf\x2f\x23"
      "\xa2\x01\x0c\xa9\x44\xfe\xc3\x90\x6a\x8d\x03\x5a\xd7\xf6\x7d\xba\x0e\x7e"
      "\x6e\xdc\xfb\x60\xed\x02\x68\x63\xfc\xa3\x6b\x9f\x8d\xc4\x9e\xe6\xb5\xd1"
      "\xbe\xd5\xe4\xa1\x2b\xa3\xec\x7a\x77\xbc\x0f\xed\x67\x6d\xfc\xfa\xe7\xad"
      "\x9b\xd9\x12\xfd\xfb\x1c\x02\x60\x4b\xd7\xae\x47\xc4\xc9\xd1\xd1\x8d\xfd"
      "\x5f\x92\xf7\x7f\xdb\x77\xb2\x87\x6d\x1e\x6d\x43\xff\x07\xcf\xce\xed\x6c"
      "\xfc\xf3\x66\xa7\xf1\x4f\x61\x7d\xfc\x13\x1d\xc6\x3f\xfb\x3b\xe4\xee\x76"
      "\x6c\x9d\xff\x85\xbb\x7d\x68\xa6\xab\x6c\xfc\xf7\x7e\xc7\xf1\xef\xfa\xa4"
      "\xd5\xf8\x48\x5e\x7b\xa1\x39\xe6\x1b\x4b\xce\x5f\x28\xa7\x59\xdf\xf6\x62"
      "\x44\x1c\x8b\xb1\xdd\x59\x7d\xb3\xf9\x9c\x53\xab\x77\x1a\xdd\xd6\xb5\x8f"
      "\xff\xb2\x25\x6b\xbf\x35\x16\xcc\xf7\xe3\xee\xe8\xee\x87\x9f\x33\x57\xaa"
      "\x97\x9e\x24\xe6\x76\xf7\xae\x47\xbc\xd2\x71\xfc\x9b\xac\x1f\xff\xa4\xc3"
      "\xf1\xcf\xde\x8f\xb3\x3d\xb6\x71\x24\xbd\xf5\x5a\xb7\x75\x5b\xc7\xff\x74"
      "\x35\x7e\x8a\x78\xbd\xe3\xf1\x7f\x30\xa3\x95\x6c\x3e\x3f\x39\xd9\x3c\x1f"
      "\x26\x5b\x67\xc5\x46\x7f\xdf\x38\xf2\x7b\xb7\xf6\x07\x1d\x7f\x76\xfc\xf7"
      "\x6d\x1e\xff\x78\xd2\x3e\x5f\x5b\x7b\xfc\x36\x7e\xdc\xf3\x6f\xda\x6d\xdd"
      "\x43\xf1\x47\xef\xe7\xff\xae\xe4\xb3\x66\x79\x57\xfe\xd8\x95\x52\xbd\xbe"
      "\x38\x15\xb1\x2b\xf9\x78\xe3\xe3\xd3\x0f\x9e\xdb\xaa\xb7\xb6\xcf\xe2\x3f"
      "\x76\x74\xf3\xfe\xaf\xd3\xf9\xbf\x37\x22\x3e\xef\x31\xfe\x1b\x87\x7f\x7e"
      "\xb5\xa7\xf8\x07\x74\xfc\xe7\x1e\xeb\xf8\x3f\x7e\xe1\xce\x47\x5f\xfc\xd0"
      "\xad\xfd\xde\xfa\xbf\xb7\x9a\xa5\x63\xf9\x23\xbd\xf4\x7f\xbd\xee\xe0\x93"
      "\xbc\x77\x00\x00\x00\x00\x00\x00\xb0\xd3\x14\x22\xe2\x40\x24\x85\xe2\x7a"
      "\xb9\x50\x28\x16\xd7\xee\xef\x38\x1c\xfb\x0a\xe5\x6a\xad\x7e\xfc\x7c\x75"
      "\xe9\xe2\x5c\x34\xbf\x2b\x3b\x1e\x63\x85\xd6\x4c\xf7\xc1\xb6\xfb\x21\xa6"
      "\xf2\xfb\x61\x5b\xf5\xe9\x47\xea\x33\x11\x71\x28\x22\xbe\x1d\xd9\xdb\xac"
      "\x17\x67\xab\xe5\xb9\x41\x07\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x3b\xc4\xfe\x2e\xdf\xff\xcf\xfc\x31\x32\xe8\xbd\x03"
      "\x9e\x3a\x3f\xf9\x0d\xc3\x6b\xcb\xfc\xef\xc7\x2f\x3d\x01\x3b\x92\xff\xff"
      "\x30\xbc\xe4\x3f\x0c\x2f\xf9\x0f\xc3\x4b\xfe\xc3\xf0\x92\xff\x30\xbc\xe4"
      "\x3f\x0c\x2f\xf9\x0f\xc3\x4b\xfe\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x40\x5f\x9d\x3d\x73\x26\x5b"
      "\x1a\xab\xf7\xaf\xce\x66\xf5\xb9\xcb\xcb\x4b\x0b\xd5\xcb\x27\xe6\xd2\xda"
      "\x42\xb1\xb2\x34\x5b\x9c\xad\x2e\x5e\x2a\xce\x57\xab\xf3\xe5\xb4\x38\x5b"
      "\xad\x6c\xf5\x7a\xe5\x6a\xf5\xd2\xd4\x74\x2c\x5d\x99\xac\xa7\xb5\xfa\x64"
      "\x6d\x79\xe5\x5c\xa5\xba\x74\xb1\x7e\xee\x42\xa5\x34\x9f\x9e\x4b\xc7\x9e"
      "\x49\x54\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf0"
      "\x7c\xa9\x2d\xaf\x2c\x94\xca\xe5\x74\x51\x41\x61\x5b\x85\xd1\x9d\xb1\x1b"
      "\x0a\x7d\x2e\x0c\xba\x67\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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\x07\xfe\x0b\x00\x00\xff\xff\xe8\x06\x37\xb1",
      1363);
  syz_mount_image(
      /*fs=*/0x200000000040, /*dir=*/0x200000000000,
      /*flags=MS_LAZYTIME|MS_STRICTATIME|MS_NOSUID|MS_NODEV|MS_MANDLOCK*/
      0x3000046, /*opts=*/0x200000000380, /*chdir=*/1, /*size=*/0x553,
      /*img=*/0x200000000a40);
  memcpy((void*)0x200000000040, "./file1\000", 8);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000040ul,
                /*flags=O_CREAT|O_RDWR*/ 0x42, /*mode=S_IXOTH|S_IROTH*/ 5);
  if (res != -1)
    r[0] = res;
  memset((void*)0x200000000140, 35, 1);
  syscall(__NR_pwrite64, /*fd=*/r[0], /*buf=*/0x200000000140ul, /*count=*/1ul,
          /*pos=*/0x8000c61ul);
  memcpy((void*)0x200000000040, "./file1\000", 8);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000040ul,
                /*flags=O_SYNC|O_NOATIME|O_CREAT|O_RDWR*/ 0x141042,
                /*mode=S_IXUSR|S_IRUSR|0x200*/ 0x340);
  if (res != -1)
    r[1] = res;
  memcpy((void*)0x200000000040, "./file1\000", 8);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000040ul,
                /*flags=O_CREAT|O_RDWR*/ 0x42, /*mode=*/0);
  if (res != -1)
    r[2] = res;
  memset((void*)0x2000000000c0, 97, 1);
  syscall(__NR_pwrite64, /*fd=*/r[2], /*buf=*/0x2000000000c0ul,
          /*count=*/0x200000c1ul, /*pos=*/0x9000ul);
  *(uint32_t*)0x2000000003c0 = 0x17c04;
  *(uint32_t*)0x2000000003c4 = -1;
  *(uint64_t*)0x2000000003c8 = 0x4ea;
  *(uint64_t*)0x2000000003d0 = 0x10001;
  *(uint64_t*)0x2000000003d8 = 0;
  *(uint64_t*)0x2000000003e0 = 8;
  syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x40305829,
          /*arg=*/0x2000000003c0ul);
  memcpy((void*)0x200000000300, "./bus\000", 6);
  syscall(__NR_mkdir, /*path=*/0x200000000300ul, /*mode=*/0ul);
  memcpy((void*)0x200000000040, "./file1\000", 8);
  memcpy((void*)0x200000000180, "./file0/file0\000", 14);
  syscall(__NR_rename, /*old=*/0x200000000040ul, /*new=*/0x200000000180ul);
  memcpy((void*)0x200000000340, "./file1\000", 8);
  syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x200000000340ul,
          /*mode=*/0ul);
  memcpy((void*)0x2000000000c0, "./bus\000", 6);
  memcpy((void*)0x200000000080, "overlay\000", 8);
  memcpy((void*)0x200000000200, "workdir", 7);
  *(uint8_t*)0x200000000207 = 0x3d;
  memcpy((void*)0x200000000208, "./bus", 5);
  *(uint8_t*)0x20000000020d = 0x2c;
  memcpy((void*)0x20000000020e, "lowerdir", 8);
  *(uint8_t*)0x200000000216 = 0x3d;
  memcpy((void*)0x200000000217, "./file0", 7);
  *(uint8_t*)0x20000000021e = 0x2c;
  memcpy((void*)0x20000000021f, "upperdir", 8);
  *(uint8_t*)0x200000000227 = 0x3d;
  memcpy((void*)0x200000000228, "./file1", 7);
  *(uint8_t*)0x20000000022f = 0x2c;
  *(uint8_t*)0x200000000230 = 0;
  syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x2000000000c0ul,
          /*type=*/0x200000000080ul, /*flags=*/0ul, /*opts=*/0x200000000200ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*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=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  const char* reason;
  (void)reason;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}