// https://syzkaller.appspot.com/bug?id=c336730ad7d408eeece8c37b2302be7d9dcf9c5c
// 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$ext4 arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {65 78 74 34 00} (length 0x5)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x800700 (8 bytes)
  //    opts: ptr[in, fs_options[ext4_options]] {
  //      fs_options[ext4_options] {
  //        elems: array[fs_opt_elem[ext4_options]] {
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              nodioread_nolock: buffer: {6e 6f 64 69 6f 72 65 61 64 5f 6e 6f
  //              6c 6f 63 6b} (length 0x10)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              journal_dev: fs_opt["journal_dev", fmt[hex, int32]] {
  //                name: buffer: {6a 6f 75 72 6e 61 6c 5f 64 65 76} (length
  //                0xb) eq: const = 0x3d (1 bytes) val: int32 = 0xff (18 bytes)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              debug_want_extra_isize: fs_opt["debug_want_extra_isize",
  //              fmt[hex, int32]] {
  //                name: buffer: {64 65 62 75 67 5f 77 61 6e 74 5f 65 78 74 72
  //                61 5f 69 73 69 7a 65} (length 0x16) eq: const = 0x3d (1
  //                bytes) val: int32 = 0x5c (18 bytes)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              nouid32: buffer: {6e 6f 75 69 64 33 32} (length 0x7)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              resgid: fs_opt["resgid", fmt[hex, gid]] {
  //                name: buffer: {72 65 73 67 69 64} (length 0x6)
  //                eq: const = 0x3d (1 bytes)
  //                val: gid (resource)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              acl: buffer: {61 63 6c} (length 0x3)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              init_itable_val: fs_opt["init_itable", fmt[hex, int32]] {
  //                name: buffer: {69 6e 69 74 5f 69 74 61 62 6c 65} (length
  //                0xb) eq: const = 0x3d (1 bytes) val: int32 = 0x8d55 (18
  //                bytes)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //    chdir: int8 = 0x0 (1 bytes)
  //    size: len = 0x473 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x46c)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x200000000180, "ext4\000", 5);
  memcpy((void*)0x2000000001c0, "./file0\000", 8);
  memcpy((void*)0x200000000680, "nodioread_nolock", 16);
  *(uint8_t*)0x200000000690 = 0x2c;
  memcpy((void*)0x200000000691, "journal_dev", 11);
  *(uint8_t*)0x20000000069c = 0x3d;
  sprintf((char*)0x20000000069d, "0x%016llx", (long long)0xff);
  *(uint8_t*)0x2000000006af = 0x2c;
  memcpy((void*)0x2000000006b0, "debug_want_extra_isize", 22);
  *(uint8_t*)0x2000000006c6 = 0x3d;
  sprintf((char*)0x2000000006c7, "0x%016llx", (long long)0x5c);
  *(uint8_t*)0x2000000006d9 = 0x2c;
  memcpy((void*)0x2000000006da, "nouid32", 7);
  *(uint8_t*)0x2000000006e1 = 0x2c;
  memcpy((void*)0x2000000006e2, "resgid", 6);
  *(uint8_t*)0x2000000006e8 = 0x3d;
  sprintf((char*)0x2000000006e9, "0x%016llx", (long long)0);
  *(uint8_t*)0x2000000006fb = 0x2c;
  memcpy((void*)0x2000000006fc, "acl", 3);
  *(uint8_t*)0x2000000006ff = 0x2c;
  memcpy((void*)0x200000000700, "init_itable", 11);
  *(uint8_t*)0x20000000070b = 0x3d;
  sprintf((char*)0x20000000070c, "0x%016llx", (long long)0x8d55);
  *(uint8_t*)0x20000000071e = 0x2c;
  *(uint8_t*)0x20000000071f = 0;
  memcpy(
      (void*)0x200000000bc0,
      "\x78\x9c\xec\xdb\xcf\x6f\x14\x55\x1c\x00\xf0\xef\x4c\x7f\x00\x22\xb4\x22"
      "\xfe\x00\x51\xab\xc4\xa4\xd1\xd8\xd2\x82\xca\xc1\x8b\x46\x13\x63\x30\x9a"
      "\xe8\x01\x8f\xb5\x5d\x48\xc3\x42\x0d\xad\x46\x90\x48\x31\xc6\x93\x89\x21"
      "\xd1\xb3\xf1\x68\xf4\x2f\xf0\x66\x4c\x8c\x7a\x32\xf1\xea\xc9\x93\x21\x21"
      "\xca\x05\xf0\x54\x33\xb3\x33\xa5\x0c\xfd\x21\x76\xdb\xa9\xdd\xcf\x27\x99"
      "\xee\x7b\x33\x6f\x76\xde\xb7\x6f\x7e\xbc\x7d\x6f\x37\x80\x8e\x35\x10\x11"
      "\xb3\x11\x71\x67\x44\xfc\x16\x11\x7d\x11\x91\x54\x0b\x0c\xb4\x5e\xae\x5d"
      "\x39\x37\x7e\xfd\xca\xb9\xf1\x24\xe6\xe6\x5e\xff\x33\xc9\xcb\x5d\xbd\x72"
      "\x6e\xbc\x2c\x5a\xee\xb7\xbd\xc8\x0c\xa6\x11\xe9\x47\x49\x6b\xe7\x8a\xe9"
      "\x33\x67\x4f\x8c\x35\x9b\x8d\xd3\x45\x7e\x78\xe6\xe4\xdb\xc3\xd3\x67\xce"
      "\x3e\xf9\xee\xc9\xb1\xe3\x8d\xe3\x8d\x53\xa3\x87\x0f\x1f\x3a\x38\xf2\xcc"
      "\xd3\xa3\x4f\xb5\x25\xce\x2c\xae\xab\x7b\x3f\x98\xda\xb7\xe7\xa5\x37\x2f"
      "\xbe\x32\x7e\xf4\xe2\x5b\x3f\x7d\x93\x14\x71\x47\x25\x8e\x76\x19\xc8\x02"
      "\xff\x6b\x2e\x57\xdd\xf6\x58\xbb\x0f\x56\xb3\x1d\x0b\xd2\x49\x77\x8d\x15"
      "\xe1\xb6\x74\x45\x44\xd6\x5c\x3d\xf9\xf5\xdf\x17\x5d\x71\xa3\xf1\xfa\xe2"
      "\xc5\x0f\x6b\xad\x1c\xb0\xa6\xb2\x67\xd3\x96\xa5\x37\xcf\xce\x01\x9b\x58"
      "\x12\x75\xd7\x00\xa8\x47\xf9\xa0\xcf\x3e\xff\x96\xcb\x3a\x75\x3d\x36\x84"
      "\xcb\xcf\xb5\x3e\x00\x65\x71\x5f\x2b\x96\xd6\x96\xee\x48\x8b\x32\x3d\x95"
      "\xcf\xb7\xed\x34\x10\x11\x47\x67\xff\xfe\x22\x5b\x62\x8d\xc6\x21\x00\x00"
      "\x16\xfa\x64\xfc\xf3\x23\xbd\x11\xf1\xfe\xf5\xaf\x5f\xce\xfa\x1e\x7d\xf3"
      "\x5b\xd2\xb8\x37\x7f\xfd\x3d\xff\xbb\xb3\x98\x43\xe9\x8f\x88\xbb\x22\x62"
      "\x57\x44\xdc\x1d\x11\xbb\x23\xe2\x9e\x88\xbc\xec\x7d\x11\x71\xff\x2a\xeb"
      "\x73\x6b\xff\x27\xbd\xb4\xca\xb7\x5c\x56\xd6\xff\x7b\xb6\x98\xdb\xba\xb9"
      "\xff\x57\xf6\xfe\xa2\xbf\xab\xc8\xed\xc8\xe3\xef\x49\x8e\x4d\x36\x1b\x07"
      "\x8a\xff\xc9\x60\xf4\x6c\xc9\xf2\x23\xcb\x1c\xe3\xbb\x17\x7e\xfd\x74\xa9"
      "\x6d\x0b\xfb\x7f\xd9\x92\x1d\xbf\xec\x0b\x16\xf5\xb8\xd4\x5d\x19\xa0\x9b"
      "\x18\x9b\x19\xcb\x3b\xa5\x6d\x70\xf9\x42\xc4\xde\xee\xc5\xe2\x4f\xe6\x67"
      "\x02\x92\x88\xd8\x13\x11\x7b\x6f\xef\xad\x77\x96\x89\xc9\xc7\xbf\xda\xb7"
      "\x54\xa1\x95\xe3\x5f\x46\x1b\xe6\x99\xe6\xbe\xcc\xc2\x9b\xcd\xe2\x9f\x8d"
      "\x4a\xfc\xa5\x64\xe1\xfc\xe4\xe4\x2d\xf3\x93\xc3\x5b\xa3\xd9\x38\x30\x5c"
      "\x9e\x15\xb7\xfa\xf9\x97\x8f\x5f\x5b\xea\xf8\xab\x8a\xbf\x0d\x2e\x37\x5a"
      "\xaf\x0b\xda\xbf\x5a\xa4\x3f\x59\x38\x5f\x3b\xdd\xde\xe3\xff\xc7\xf3\x3f"
      "\xed\x4d\xde\xc8\xe7\x99\x7b\x8b\x75\xef\x8d\xcd\xcc\x9c\x1e\x89\xe8\x4d"
      "\x8e\xe4\xf9\x9b\xd6\x8f\xde\xd8\xb7\xcc\x97\xe5\xb3\xf3\x7f\x70\xff\xe2"
      "\xd7\xff\xae\x62\x9f\x2c\xfe\x07\x22\x22\x3b\x89\x1f\x8c\x88\x87\x22\xe2"
      "\xe1\xa2\xee\x8f\x44\xc4\xa3\x11\xb1\x7f\x99\x18\x7f\x7c\x7e\xe5\xf8\x23"
      "\xad\xa9\xfd\x2f\x44\x4c\x2c\x7a\xff\x9b\x3f\xff\x2b\xed\x7f\xfb\x89\xae"
      "\x13\x3f\x7c\xbb\xd4\xf1\xff\x5d\xfb\x1f\xca\x53\x83\xc5\x9a\xfc\xfe\xb7"
      "\x82\xc5\xaa\x93\xdd\x2e\xaa\x15\x5c\xcd\xff\x0e\x00\x00\x00\xfe\x2f\xd2"
      "\xfc\x3b\xf0\x49\x3a\x34\x9f\x4e\xd3\xa1\xa1\xd6\x77\xf8\x77\xc7\x1d\x69"
      "\x73\x6a\x7a\xe6\x89\x63\x53\xef\x9c\x9a\x68\x7d\x57\xbe\x3f\x7a\xd2\x72"
      "\xa4\xab\xaf\x18\x0f\x6d\x4e\x36\x1b\x23\xc9\x6c\xf1\x8e\xad\xf1\xd1\xd1"
      "\x62\xac\xb8\x1c\x2f\x3d\x58\x8c\x1b\x7f\xd6\xb5\x2d\xcf\x0f\x8d\x4f\x35"
      "\x27\x6a\x8e\x1d\x3a\xdd\xf6\x25\xae\xff\xcc\x1f\x5d\x75\xd7\x0e\x58\x63"
      "\xdb\x16\x5d\x3b\xda\xbb\xee\x15\x01\x6a\x50\x9d\x47\x4f\x6f\xce\x9e\x7f"
      "\x35\xdc\x0c\x60\xb3\xf2\x7b\x6d\xe8\x5c\x2b\x5c\xff\xe9\x7a\xd5\x03\x58"
      "\x7f\x9e\xff\xd0\xb9\x16\xbb\xfe\xcf\x57\xf2\xe6\x02\x60\x73\xf2\xfc\x87"
      "\xce\xe5\xfa\x87\x0e\x95\x7e\x5f\x77\x0d\x80\x1a\x79\xfe\x43\x47\x5a\xcd"
      "\xef\xfa\xd7\x30\xb1\x75\x63\x54\xa3\x9e\xc4\x46\x6d\x94\x3c\x11\x51\x26"
      "\xd2\x0d\x51\x1f\x89\x35\x4a\xd4\x7d\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\x68\x8f\x7f\x02\x00\x00\xff\xff\x48\x07\xe7\x00",
      1132);
  syz_mount_image(/*fs=*/0x200000000180, /*dir=*/0x2000000001c0,
                  /*flags=MS_I_VERSION|MS_NOATIME|0x300*/ 0x800700,
                  /*opts=*/0x200000000680, /*chdir=*/0, /*size=*/0x473,
                  /*img=*/0x200000000bc0);
}
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;
}