// https://syzkaller.appspot.com/bug?id=0e77b741e3a1b835114f0f7f0f3e53e12c9a73bc
// 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");
  } else if (strncmp(fs, "gfs2", 4) == 0 &&
             (strstr(opts, "errors=panic") || strstr(opts, "debug"))) {
    strcat(opts, ",errors=withdraw");
  }
  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;
    }
  }
}

void execute_one(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  syz_mount_image$hfsplus arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {68 66 73 70 6c 75 73 00} (length 0x8)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 00} (length 0xfc)
  //    }
  //    flags: mount_flags = 0x2010410 (8 bytes)
  //    opts: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //      }
  //    }
  //    chdir: int8 = 0x1 (1 bytes)
  //    size: len = 0x68f (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x68f)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x200000000a40, "hfsplus\000", 8);
  memcpy((void*)0x200000000080,
         "./"
         "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
         "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
         "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
         "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000",
         252);
  memcpy(
      (void*)0x200000001140,
      "\x78\x9c\xec\xdd\x4d\x6c\x1c\x57\x1d\x00\xf0\xff\xac\xd7\x6b\x6f\x08\xa9"
      "\xdb\x3a\x6d\x40\x95\x6a\x35\x12\x20\x2c\x12\x3b\x96\x0b\xe6\x42\x40\x80"
      "\x2c\xd1\x43\x55\x0e\x9c\xad\xc4\x69\x56\xd9\xa4\xc5\xde\x22\xb7\x42\x74"
      "\xf9\xbe\xf6\xd0\x2b\x52\x39\xf8\x80\xc4\x09\x89\x7b\xa4\x72\xe1\x02\xb7"
      "\x1e\x7a\xf1\xb1\x12\x12\x97\x5e\x30\xa7\x45\x33\x3b\xb3\xdf\x1b\x76\xf3"
      "\xb5\x9b\xf6\xf7\x8b\x66\xdf\x9b\x79\x33\xef\xe3\x3f\x33\xfb\xd6\xbb\x8a"
      "\x26\x80\xcf\xad\xdd\xf5\x28\xdf\x8d\x24\x76\xd7\x5f\x39\x4a\xd7\x4f\x8e"
      "\xb7\xea\x27\xc7\x5b\xb7\x8b\x7c\x44\x2c\x45\x44\x33\xa2\x1c\x11\xa5\x88"
      "\x48\xfe\xd3\x6a\xb5\x3e\x8c\xb8\x1a\x91\x74\xaa\x49\x06\xd2\x88\xc5\xfe"
      "\x76\xde\xaf\xed\xbc\xf6\xd1\xa7\x27\x9f\xb4\xd7\xca\xf9\x92\xed\x5f\xea"
      "\x3b\xee\xbe\x34\xf3\x25\xd6\x22\x62\x21\x4f\x1f\x56\x7d\xd7\x1e\xb8\xbe"
      "\xa4\x33\xc2\xab\x11\x71\x31\x4f\x61\xe6\xd2\xdb\xb4\xd5\xe7\xa7\x7f\x3f"
      "\xdb\x2e\xa9\xf4\xed\x58\x1d\x75\xf4\xf2\xe3\xe9\x24\xf0\x48\x25\xed\x79"
      "\x73\xc8\x4a\xc4\x99\xfc\x46\x4f\x3f\x07\xb4\x67\xc5\xf6\x9c\xfd\x44\x6b"
      "\xce\xba\x03\x00\x00\x00\xf0\x18\x3c\x75\x1a\xa7\x71\x94\x9c\x9b\x75\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\xe0\x49\xd1\xec\x3e\xff\x3f\xc9\x97"
      "\x52\x91\x5f\x8b\xa4\x78\xfe\x7f\x25\xdf\x16\x79\x7e\xbe\xbc\x38\xdd\xee"
      "\x77\x1f\x55\x3f\x00\x00\x00\x00\x00\x00\x00\xe0\x7e\x2d\x4d\x7f\xc8\x8b"
      "\xa7\x71\x1a\x47\x71\xae\x58\x6f\x25\xd9\x6f\xfe\x2f\x65\x2b\xab\xd9\xeb"
      "\x17\xe2\xad\x38\x8c\xfd\x38\x88\x4b\x71\x14\x7b\xd1\x88\x46\x1c\xc4\x66"
      "\x44\xac\xf4\x54\x54\x39\xda\x6b\x34\x0e\x36\x27\x38\xf2\xca\xc8\x23\xaf"
      "\x4c\x38\xb6\xea\x50\xc9\xf0\x16\x00\x00\x00\x00\x00\x00\x00\xf8\xfc\xf9"
      "\x55\xec\x76\x7f\xff\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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\x79"
      "\x90\x44\x2c\xb4\x93\x6c\x59\x8d\x72\x7b\xf3\x4a\x94\xd2\xdc\x72\x44\x54"
      "\xd2\x0d\xcd\x88\x7f\x16\xf9\x27\x59\x79\xd6\x1d\x00\x00\x00\x80\x07\x57"
      "\x1d\xb5\x71\xa9\x27\xff\xd4\x69\x9c\xc6\x51\x9c\x2b\xd6\x5b\x49\xac\x46"
      "\xc4\x73\xd9\xdf\xff\xcb\xf1\x56\xdc\x89\x46\xd4\xa2\x11\xf5\xd8\x8f\xeb"
      "\xd9\x77\x02\xed\xbf\xfa\x4b\x27\xc7\x5b\xf5\x93\xe3\xad\xdb\xe9\x32\xdc"
      "\xc6\x77\xff\x3d\x55\x3f\xb3\x1a\xa3\xfd\xdd\xc3\xe8\x96\x2f\x64\x7b\x54"
      "\xe3\x46\xd4\xb2\x2d\x97\xe2\x5a\xbc\x11\xf5\xb8\x1e\xa5\xec\xc8\xd4\x85"
      "\xbc\x3f\x45\xad\x03\xfd\xfa\x65\xda\xa7\xe4\x3b\xb9\x09\x7b\x76\x3d\x4f"
      "\xd3\x91\xbf\x97\xa7\x43\xde\x9d\x6a\xb0\xe3\xdc\xfb\xcb\x94\x5b\xcb\x79"
      "\x66\x21\x4f\x57\xb2\x88\x2c\x76\x22\xb2\x91\xf7\x2d\x8d\xc6\xd3\xc5\x99"
      "\x19\x7d\x86\x8a\xb3\xb3\x38\x59\xc7\x06\x5b\xda\x8c\x52\xa7\xb3\xab\x03"
      "\x2d\x0d\x0c\xa2\x1b\xf3\xe5\xc9\xda\x4a\x9d\xc9\xd3\x74\x3c\xbf\x1b\x17"
      "\xf3\x99\xe8\x8b\x44\x36\xa2\xee\xd5\xf7\xdc\xbd\x63\x1e\xf1\xd5\xbf\xfe"
      "\xf9\x27\x37\xeb\x77\x6e\xdd\xbc\x71\xb8\x3e\x3f\x43\x9a\x4c\x71\xd1\xb5"
      "\xb2\xd7\xea\xf0\x35\xb1\xd5\x13\x89\xe7\x3f\xcb\x91\x18\xb2\x91\x45\xe2"
      "\x7c\x67\x7d\x37\x7e\x18\x3f\x8e\xf5\x58\x8b\x57\xe3\x20\x6a\xf1\xb3\xd8"
      "\x8b\x46\xec\xc7\x5a\x7c\x3f\xcb\xed\xe5\xd7\x73\xd2\x73\xcb\x8f\x89\xd4"
      "\xd5\xbe\xb5\x57\xc7\x74\xa0\xf3\xe6\x5d\xc9\xaf\xd0\xf6\xc9\x9a\xae\x4f"
      "\x2f\x65\xc7\x9e\x8b\x5a\xe7\x4d\xe1\xe5\xec\xdf\x95\xd8\x8c\x6f\xc6\x76"
      "\x6c\xc7\x4e\xcf\x19\x3e\x7f\xef\x33\x9c\xdd\xf5\xa5\x31\xef\xb4\xad\x2f"
      "\x8e\x1c\xc5\xc5\xaf\xe5\x99\x74\xce\xfa\xfd\xb8\xb9\x6b\x26\xd2\xb8\x3e"
      "\x5d\xc4\x35\x89\xbe\xf7\xdc\x95\xac\xac\x77\x4b\x37\x4a\xcf\x4c\x10\xa5"
      "\x29\xe7\xa3\xf2\x97\xf3\x7b\x30\x6d\xe3\xd7\x79\x3a\x1f\x06\x23\xb1\xd9"
      "\x13\x89\x67\xef\x1d\x89\x3f\x66\x43\x3a\xac\xdf\xb9\x75\x70\x73\xef\xcd"
      "\xc9\x9a\x7b\xe6\xbd\x3c\x93\xde\x47\xbf\x9d\xab\x59\xa2\x92\xdf\x43\xed"
      "\x1f\x17\xfa\xaf\x8e\xf4\x5a\x7a\x76\x64\xd9\x66\x56\xb6\xda\x29\x2b\x0d"
      "\x95\x9d\xef\x94\xb5\xef\xd4\x66\xbc\x11\xd7\x63\x7f\xc4\x9d\x5a\xc9\x3f"
      "\xc3\x0d\xd7\x74\x25\x2b\x7b\x7e\x64\xd9\x56\x56\x76\xa1\xa7\x6c\xd4\xe7"
      "\x2d\x00\xe6\x5a\x3a\x1d\x9e\xf9\xfa\x99\x4a\xf5\x5f\xd5\x7f\x54\x3f\xa8"
      "\xfe\xa6\x7a\xb3\xfa\xca\xf2\xf7\x96\xbe\xb5\xf4\x42\x25\x16\xff\xb6\xf8"
      "\xed\xf2\xc6\xc2\x57\x4a\x2f\x24\x7f\x89\x0f\xe2\x17\xdd\x8f\x90\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\xc0\xfd\x3b\x7c\xfb\x9d\x5b\x7b\xf5\xfa\xfe\x41\x5f\xa6\x59"
      "\x6f\xb5\x5a\xef\x8e\x2c\x7a\xd0\xcc\xc7\x1f\xff\x29\x7b\xc0\xd3\xc3\xaf"
      "\x79\x92\x4c\xf1\x38\xb3\xc7\xd8\xe8\x97\xce\x46\x0c\x16\x45\x44\xb3\xaf"
      "\x1b\x67\x67\x12\x8d\x07\xce\x24\xc9\xa4\x3b\xff\xb7\xd5\x6a\xe5\x5b\x92"
      "\x87\xd7\x8d\x52\x3c\x9a\x71\xb5\x72\xf3\x12\xe7\x59\x64\x66\xfa\xb6\x04"
      "\x3c\x06\x97\x1b\xb7\xdf\xbc\x7c\xf8\xf6\x3b\xdf\xa8\xdd\xde\x7b\x7d\xff"
      "\xf5\xfd\x3b\x3b\xdb\xdb\x3b\x1b\x3b\xdb\x2f\x6f\x5d\xbe\x51\xab\xef\x6f"
      "\xb4\x5f\x07\x8f\x9a\xe2\x99\xae\xc0\xdc\xea\x4e\xfa\x83\x25\x7f\x98\x4d"
      "\x87\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\xff\xeb\x51\xff\x2f\x82\x64"
      "\xd6\x03\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x9e\x78\xbb\xeb\x51\xbe\x1b\x49\x6c\x6e\x5c\xda"
      "\x48\xd7\x4f\x8e\xb7\xea\xe9\x52\xe4\xbb\x7b\x96\x23\xa2\x14\x11\xc9\xcf"
      "\x23\x92\x0f\x23\xae\x46\x7b\x89\x95\x9e\xea\x92\x71\xed\xbc\x5f\xdb\x79"
      "\xed\xa3\x4f\x4f\x3e\xe9\xd6\x55\x2e\xf6\x2f\x8d\x38\xee\x07\xd3\x8d\xa2"
      "\x99\x2f\xb1\x16\x11\x0b\x79\x5a\xf8\xd1\x44\x55\x94\xc7\xd6\x77\x6d\xb0"
      "\x74\x6a\x49\x67\x84\x69\xc0\x2e\x16\x81\x83\x59\xfb\x5f\x00\x00\x00\xff"
      "\xff\xf0\x6b\x06\x1d",
      1679);
  syz_mount_image(
      /*fs=*/0x200000000a40, /*dir=*/0x200000000080,
      /*flags=MS_LAZYTIME|MS_POSIXACL|MS_SYNCHRONOUS|MS_NOATIME*/ 0x2010410,
      /*opts=*/0x200000000000, /*chdir=*/1, /*size=*/0x68f,
      /*img=*/0x200000001140);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      00} (length 0xfb)
  //    }
  //    flags: open_flags = 0x101042 (4 bytes)
  //    mode: open_mode = 0xb0 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000280,
         "./"
         "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
         "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
         "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
         "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000",
         251);
  syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000280ul,
          /*flags=O_SYNC|O_CREAT|O_RDWR*/ 0x101042,
          /*mode=S_IWGRP|S_IRGRP|S_IWUSR*/ 0xb0);
  //  openat$cgroup_ro arguments: [
  //    fd: fd_cgroup (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {68 75 67 65 74 6c 62 2e 32 4d 42 2e 75 73 61 67 65 5f 69 6e
  //      5f 62 79 74 65 73 00} (length 0x1b)
  //    }
  //    flags: const = 0x275a (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000040, "hugetlb.2MB.usage_in_bytes\000", 27);
  syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000040ul,
          /*flags=*/0x275a, /*mode=*/0);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-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=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}