// https://syzkaller.appspot.com/bug?id=c82fb107b1cff1be32fa92a3d8b37bd5cc98b09d
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <sched.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_clone
#define __NR_clone 220
#endif
#ifndef __NR_exit
#define __NR_exit 93
#endif
#ifndef __NR_fchdir
#define __NR_fchdir 50
#endif
#ifndef __NR_fcntl
#define __NR_fcntl 25
#endif
#ifndef __NR_inotify_init1
#define __NR_inotify_init1 26
#endif
#ifndef __NR_ioctl
#define __NR_ioctl 29
#endif
#ifndef __NR_memfd_create
#define __NR_memfd_create 279
#endif
#ifndef __NR_mmap
#define __NR_mmap 222
#endif
#ifndef __NR_mount
#define __NR_mount 40
#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;
}

static long syz_open_procfs(volatile long a0, volatile long a1)
{
  char buf[128];
  memset(buf, 0, sizeof(buf));
  if (a0 == 0) {
    snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1);
  } else if (a0 == -1) {
    snprintf(buf, sizeof(buf), "/proc/thread-self/%s", (char*)a1);
  } else {
    snprintf(buf, sizeof(buf), "/proc/self/task/%d/%s", (int)a0, (char*)a1);
  }
  int fd = open(buf, O_RDWR);
  if (fd == -1)
    fd = open(buf, O_RDONLY);
  return fd;
}

//% 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");
}

#define USLEEP_FORKED_CHILD (3 * 50 * 1000)

static long handle_clone_ret(long ret)
{
  if (ret != 0) {
    return ret;
  }
  usleep(USLEEP_FORKED_CHILD);
  syscall(__NR_exit, 0);
  while (1) {
  }
}

static long syz_clone(volatile long flags, volatile long stack,
                      volatile long stack_len, volatile long ptid,
                      volatile long ctid, volatile long tls)
{
  long sp = (stack + stack_len) & ~15;
  long ret = (long)syscall(__NR_clone, flags & ~CLONE_VM, sp, ptid, ctid, tls);
  return handle_clone_ret(ret);
}

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[5] = {0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0,
                 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  res = -1;
  res = syz_clone(/*flags=*/0, /*stack=*/0, /*stack_len=*/0, /*parentid=*/0,
                  /*childtid=*/0, /*tls=*/0);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x20000040, "ext2\000", 5);
  memcpy((void*)0x20000480, "./file0\000", 8);
  *(uint8_t*)0x20000080 = 0;
  memcpy(
      (void*)0x20000dc0,
      "\x78\x9c\xec\xdd\xcf\x6f\x14\x55\x1c\x00\xf0\xef\x4c\x7f\xf0\xdb\x56\x44"
      "\x11\x04\xac\xa2\x91\xf8\xa3\xa5\xe5\x87\x1c\xbc\x68\x34\xf1\xa0\x89\x89"
      "\x1e\x30\x9e\x6a\x5b\x08\xb2\x50\x43\x4b\x22\x84\x68\xf5\x80\x47\x43\xe2"
      "\xdd\x78\x34\xf1\x2f\xf0\xa4\x17\xa3\x9e\x4c\xbc\x6a\xbc\x1a\x12\x62\xb8"
      "\x80\x26\x26\x6b\x66\x77\x06\x96\xfd\x65\x5b\xb7\x4c\xc3\x7e\x3e\xc9\xc0"
      "\x7b\xf3\xde\xee\x7b\xdf\x99\x79\xbb\x6f\x66\x76\xbb\x01\xf4\xad\xb1\xec"
      "\x9f\x24\x62\x6b\x44\xfc\x1a\x11\x23\xf5\xec\x9d\x15\xc6\xea\xff\xdd\xbc"
      "\x7e\x69\xe6\xaf\xeb\x97\x66\x92\xa8\x56\xdf\xfc\x33\xa9\xd5\xbb\x71\xfd"
      "\xd2\x4c\x51\xb5\x78\xdc\x96\x7a\xa6\x5a\xcd\xf3\x1b\xda\xb4\x7b\xf9\x9d"
      "\x88\xe9\x4a\x65\xee\x5c\x9e\x9f\x58\x3c\xf3\xfe\xc4\xc2\x85\x8b\xcf\x9d"
      "\x3a\x33\x7d\x72\xee\xe4\xdc\xd9\xa9\x63\xc7\x0e\x1f\xda\x3b\x7c\x74\xea"
      "\xc8\x2a\xa2\x4a\x5a\xd6\x64\x71\xdd\xd8\xfd\xe1\xfc\x9e\x5d\xaf\xbe\x7d"
      "\xe5\xf5\x99\xe3\x57\xde\xfd\xf1\xeb\xac\xd6\xd6\xbc\xbc\x31\x8e\x5e\x19"
      "\xab\x6f\xdd\xb6\x9e\xec\x75\x63\x25\xdb\xd6\x90\x4e\x06\x4b\xec\x08\x2b"
      "\xf2\x4f\x44\x64\xbb\x6b\xa8\x36\xfe\x47\x62\x20\x36\xdd\x2a\x1b\x89\x57"
      "\x3e\x29\xb5\x73\xc0\x9a\xaa\x56\xab\xd5\x76\xef\xcf\xb9\xa5\x2a\x70\x0f"
      "\x4b\xa2\xec\x1e\x00\xe5\x28\xde\xe8\xb3\xf3\xdf\x62\xb9\x4b\x53\x8f\x75"
      "\xe1\xda\x8b\xf5\x13\xa0\x2c\xee\x9b\xf9\x52\x2f\x19\x8c\x34\x22\x36\xe6"
      "\xe7\x46\xdb\xd6\xa8\xfd\xb1\x88\x38\xbe\xf4\xf7\x17\xd9\x12\x6b\x74\x1d"
      "\x02\x00\xa0\xd1\xb7\xd9\xfc\xe7\xd9\x76\xf3\xbf\x34\x1e\x6a\xa8\x77\x5f"
      "\x7e\x0f\x65\x34\x22\xee\x8f\x88\xed\x11\xf1\x40\x44\xec\x88\x88\x07\x23"
      "\x6a\x75\x77\x46\xc4\xc3\x2b\x6c\xbf\xf9\x0e\x49\xeb\xfc\x27\xbd\xba\xaa"
      "\xc0\x96\x29\x9b\xff\xbd\x90\xdf\xdb\xba\x73\xfe\x97\x16\x55\x46\x07\xf2"
      "\xdc\xb6\x5a\xfc\x43\xc9\x89\x53\x95\xb9\x83\xf9\x36\x39\x10\x43\x1b\xb2"
      "\xfc\x64\x97\x36\xbe\x7b\xf9\x97\xcf\x3a\x95\x35\xce\xff\xb2\x25\x6b\xbf"
      "\x98\x0b\xe6\xfd\xb8\x3a\xd8\x74\x81\x6e\x76\x7a\x71\xfa\xff\xc4\xdc\xe8"
      "\xda\xc7\x11\xbb\x07\xdb\xc5\x9f\x44\x71\x1b\x27\x89\x88\x5d\x11\xb1\x7b"
      "\x95\x6d\x9c\x7a\xfa\xab\x3d\x9d\xca\x9a\xe2\xcf\x36\x73\x53\xfc\x5d\xf4"
      "\xe0\x3e\x53\xf5\xcb\x88\xa7\xea\xfb\x7f\x29\x9a\xe2\x2f\x24\x1d\xef\x4f"
      "\x4e\x3e\x7f\x74\xea\xc8\xc4\xc6\xa8\xcc\x1d\x9c\x28\x8e\x8a\x56\x3f\xfd"
      "\x7c\xf9\x8d\xd6\xb5\xf5\xe7\xff\xef\xfd\xbf\xb6\xb2\xfd\xbf\xb9\xed\xf1"
      "\x5f\xef\xdf\x50\xc4\x68\xb2\x31\x62\xe1\xc2\xc5\xd3\xb5\xfb\xb5\x0b\x2b"
      "\x6f\xe3\xf2\x6f\x9f\x76\x3c\xa7\x59\xed\xf1\x3f\x9c\xbc\x55\x4b\x0f\xe7"
      "\xeb\x3e\x98\x5e\x5c\x3c\x37\x19\x31\x9c\xbc\xd6\xba\x7e\xea\xf6\x63\x8b"
      "\x7c\x51\x3f\x8b\xff\xc0\xfe\xf6\xe3\x7f\x7b\xdc\xde\x12\x8f\x44\x44\x76"
      "\x10\xef\x8d\x88\x7d\x11\xf1\x68\xde\xf7\xc7\x22\xe2\xf1\x88\xd8\xdf\x29"
      "\xc0\xdf\x77\xc6\x0f\x2f\x3d\xf1\xde\xca\xe3\xef\x72\x55\xbe\x87\xb2\xf8"
      "\x67\xbb\xec\xff\xec\x25\x2f\x4b\xdd\xde\xff\xcd\x07\xc2\x52\x9b\xa2\x3b"
      "\x13\x03\xa7\xbf\xff\xa6\x53\xfb\xcb\xdb\xff\x87\x6b\xa9\x03\xf9\x9a\xe5"
      "\xbc\xfe\x75\xe9\x4e\xbb\x20\x00\x00\x00\xe0\x9e\x96\xd6\x3e\x03\x9f\xa4"
      "\xe3\xb7\xd2\x69\x3a\x3e\x5e\xff\x0c\xff\x8e\xd8\x9c\x56\xe6\x17\x16\x9f"
      "\x39\x31\x7f\xfe\xec\x6c\xfd\xb3\xf2\xa3\x31\x94\x16\x57\xba\x46\x1a\xae"
      "\x87\x4e\xe6\xd7\x86\x8b\xfc\x54\x53\xfe\x50\x7e\xdd\xf8\xf3\x81\x4d\xb5"
      "\xfc\xf8\xcc\x7c\x65\xb6\xec\xe0\xa1\xcf\x6d\xe9\x30\xfe\x33\x7f\x0c\x94"
      "\xdd\x3b\x60\xcd\xf9\xbe\x16\xf4\x2f\xe3\x1f\xfa\x97\xf1\x0f\xfd\xcb\xf8"
      "\x87\xfe\x65\xfc\x43\xff\x6a\x37\xfe\x3f\x2a\xa1\x1f\xc0\xdd\x57\x1b\xff"
      "\x69\xd9\xbd\x00\xca\x50\x1b\xff\xe7\xf7\x95\xdd\x0d\xa0\x04\xce\xff\xa1"
      "\x7f\x19\xff\xd0\x97\x3a\x7e\x37\x3e\xed\x5c\x24\xd1\xd3\xc4\xa6\xc8\x7f"
      "\x0a\x61\x9d\xf4\x67\x99\x89\x48\xd7\x45\x37\xd6\x5b\x22\x96\x22\x7a\xf7"
      "\x84\x71\xe1\xe2\xe9\xc1\x65\xff\x31\x8b\xd5\x25\x92\x68\x5b\xd4\xfd\x75"
      "\xa3\xf5\x17\x36\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xd6\xa7"
      "\x7f\x03\x00\x00\xff\xff\xd0\x98\xdd\x4e",
      1144);
  syz_mount_image(/*fs=*/0x20000040, /*dir=*/0x20000480, /*flags=*/0,
                  /*opts=*/0x20000080, /*chdir=*/1, /*size=*/0x478,
                  /*img=*/0x20000dc0);
  memcpy((void*)0x200000c0, "task\000", 5);
  res = -1;
  res = syz_open_procfs(/*pid=*/0, /*file=*/0x200000c0);
  if (res != -1)
    r[1] = res;
  syscall(__NR_fchdir, /*fd=*/r[1]);
  memcpy((void*)0x20000080, ".\000", 2);
  memcpy((void*)0x20000000, "proc\000", 5);
  syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x20000080ul, /*type=*/0x20000000ul,
          /*flags=*/0ul, /*data=*/0ul);
  res = syscall(__NR_inotify_init1, /*flags=*/0ul);
  if (res != -1)
    r[2] = res;
  syscall(__NR_fcntl, /*fd=*/r[2], /*cmd=*/8ul, /*pid=*/r[0]);
  res = syscall(__NR_fcntl, /*fd=*/r[2], /*cmd=*/0x10ul, /*arg=*/0x20000140ul);
  if (res != -1)
    r[3] = *(uint32_t*)0x20000144;
  memcpy((void*)0x20000580, "pagemap\000", 8);
  res = -1;
  res = syz_open_procfs(/*pid=*/r[3], /*file=*/0x20000580);
  if (res != -1)
    r[4] = res;
  *(uint64_t*)0x20000200 = 0x60;
  *(uint64_t*)0x20000208 = 0;
  *(uint64_t*)0x20000210 = 0x20245000;
  *(uint64_t*)0x20000218 = 0x204c7000;
  *(uint64_t*)0x20000220 = 0;
  *(uint64_t*)0x20000228 = 0;
  *(uint64_t*)0x20000230 = 0;
  *(uint64_t*)0x20000238 = 0x1bb;
  *(uint64_t*)0x20000240 = 0;
  *(uint64_t*)0x20000248 = 0;
  *(uint64_t*)0x20000250 = 0x6a;
  *(uint64_t*)0x20000258 = 0x55;
  syscall(__NR_ioctl, /*fd=*/r[4], /*cmd=*/0xc0606610, /*arg=*/0x20000200ul);
}
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;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}