// https://syzkaller.appspot.com/bug?id=41a99255064fb02fda9a07f8a058a824dedb7616
// 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;
    }
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  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 {
  //              auto_da_alloc: buffer: {61 75 74 6f 5f 64 61 5f 61 6c 6c 6f
  //              63} (length 0xd)
  //            }
  //            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 = 0x5a (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 = 0x3 (18 bytes)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //    chdir: int8 = 0x1 (1 bytes)
  //    size: len = 0x46f (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x46f)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x200000000180, "ext4\000", 5);
  memcpy((void*)0x2000000001c0, "./file0\000", 8);
  memcpy((void*)0x2000000007c0, "nodioread_nolock", 16);
  *(uint8_t*)0x2000000007d0 = 0x2c;
  memcpy((void*)0x2000000007d1, "auto_da_alloc", 13);
  *(uint8_t*)0x2000000007de = 0x2c;
  memcpy((void*)0x2000000007df, "debug_want_extra_isize", 22);
  *(uint8_t*)0x2000000007f5 = 0x3d;
  sprintf((char*)0x2000000007f6, "0x%016llx", (long long)0x5a);
  *(uint8_t*)0x200000000808 = 0x2c;
  memcpy((void*)0x200000000809, "nouid32", 7);
  *(uint8_t*)0x200000000810 = 0x2c;
  memcpy((void*)0x200000000811, "resgid", 6);
  *(uint8_t*)0x200000000817 = 0x3d;
  sprintf((char*)0x200000000818, "0x%016llx", (long long)0);
  *(uint8_t*)0x20000000082a = 0x2c;
  memcpy((void*)0x20000000082b, "acl", 3);
  *(uint8_t*)0x20000000082e = 0x2c;
  memcpy((void*)0x20000000082f, "init_itable", 11);
  *(uint8_t*)0x20000000083a = 0x3d;
  sprintf((char*)0x20000000083b, "0x%016llx", (long long)3);
  *(uint8_t*)0x20000000084d = 0x2c;
  *(uint8_t*)0x20000000084e = 0;
  memcpy(
      (void*)0x200000000bc0,
      "\x78\x9c\xec\xdb\xcd\x6b\x1c\xe5\x1f\x00\xf0\xef\x4c\x5e\xda\xfe\xfa\x92"
      "\xfc\x6a\x7d\x69\xad\x1a\x2d\x42\x50\x4c\x9a\xb4\x6a\x0f\x5e\x14\x05\x91"
      "\x8a\x82\x1e\xea\x31\x26\xdb\x12\xba\x6d\xa4\x89\x62\x6b\xb1\xa9\x88\x27"
      "\x41\x0a\x7a\x16\x8f\xa2\x7f\x81\x37\x11\x44\x3d\x09\x5e\x3d\x79\x92\x42"
      "\xd1\x5e\xda\x7a\x8a\xcc\xec\x4c\xbb\xd9\x66\x13\x63\x36\x9d\x98\xfd\x7c"
      "\x60\x76\x9f\x67\xe6\xd9\x9d\xe7\xbb\xcf\xbc\x3c\xfb\x3c\xbb\x01\x74\xad"
      "\xa1\xec\x21\x89\xd8\x11\x11\xbf\x46\xc4\x40\x23\xbb\xb8\xc0\x50\xe3\xe9"
      "\xfa\xd5\xf3\x93\x37\xae\x9e\x9f\x4c\x62\x61\xe1\xb5\x3f\x92\xbc\xdc\xb5"
      "\xab\xe7\x27\xcb\xa2\xe5\xeb\xb6\x17\x99\xe1\x34\x22\xfd\x30\x29\x76\xb2"
      "\xd8\xec\xd9\x73\x27\x27\xea\xf5\xda\x99\x22\x3f\x3a\x77\xea\xad\xd1\xd9"
      "\xb3\xe7\x9e\x78\xe7\xd4\xc4\x89\xda\x89\xda\xe9\xf1\x23\x47\x0e\x1f\x1a"
      "\x7b\xfa\xa9\xf1\x27\x3b\x12\x67\x16\xd7\xb5\x7d\xef\xcf\xec\xdf\xfb\xe2"
      "\x1b\x97\x5e\x9e\x3c\x76\xe9\xcd\x1f\xbf\xce\xea\xbb\xa3\xd8\xde\x1c\x47"
      "\xa7\x0c\x65\x81\xff\xb9\x90\x6b\xdd\xf6\x68\xa7\x77\x56\xb1\x9d\x4d\xe9"
      "\xa4\xb7\xc2\x8a\xb0\x2a\x3d\x11\x91\x35\x57\x5f\x7e\xfe\x0f\x44\x4f\xdc"
      "\x6a\xbc\x81\x78\xe1\x83\x4a\x2b\x07\xac\xab\xec\xde\xb4\xa5\xfd\xe6\xf9"
      "\x05\x60\x13\x4b\xa2\xea\x1a\x00\xd5\x28\x6f\xf4\xd9\xf7\xdf\x72\xb9\x43"
      "\x5d\x8f\x0d\xe1\xca\xb3\x8d\x2f\x40\x59\xdc\xd7\x8b\xa5\xb1\xa5\x37\xd2"
      "\xa2\x4c\x5f\xcb\xf7\xdb\x4e\x1a\x8a\x88\x63\xf3\x7f\x7d\x9e\x2d\xb1\x4e"
      "\xe3\x10\x00\x00\xcd\x3e\x9e\xfc\xec\x68\x7f\x44\xbc\x77\xe3\xab\x97\xb2"
      "\xbe\xc7\x40\x44\x94\xe3\x41\xf7\xe4\x8f\xbf\xe5\x8f\xbb\x8a\x39\x94\xc1"
      "\x88\xf8\x7f\x44\xec\x8e\x88\xbb\x22\x62\x4f\x44\xdc\x5d\x94\xbd\x37\x22"
      "\xee\x5b\x63\x7d\x6e\xef\xff\xa4\x97\xd7\xf8\x96\xcb\xca\xfa\x7f\xcf\x14"
      "\x73\x5b\x8b\xfb\x7f\x65\xef\x2f\x06\x7b\x8a\xdc\xce\x3c\xfe\xbe\xe4\xf8"
      "\x74\xbd\x76\xb0\xf8\x4c\x86\xa3\x6f\x4b\x96\x1f\x5b\x66\x1f\xdf\x3e\xff"
      "\xcb\x27\xed\xb6\x35\xf7\xff\xb2\x25\xdb\x7f\xd9\x17\x2c\xea\x71\xb9\xb7"
      "\x65\x80\x6e\x6a\x62\x6e\x22\xef\x94\x76\xc0\x95\x8b\x11\xfb\x7a\x97\x8a"
      "\x3f\xb9\x39\x13\x90\x44\xc4\xde\x88\xd8\xb7\xba\xb7\xde\x55\x26\xa6\x1f"
      "\xfb\x72\x7f\xbb\x42\x2b\xc7\xbf\x8c\x0e\xcc\x33\x2d\x7c\x91\x85\x37\x9f"
      "\xc5\x3f\x1f\x2d\xf1\x97\x92\xe6\xf9\xc9\xe9\xdb\xe6\x27\x47\xb7\x46\xbd"
      "\x76\x70\xb4\x3c\x2a\x6e\xf7\xd3\xcf\x1f\xbd\xda\x6e\xff\x6b\x8a\xbf\x03"
      "\xae\xd4\x1a\xcf\x4d\xed\xdf\x5a\x64\x30\x69\x9e\xaf\x9d\xed\xec\xfe\xff"
      "\xe5\xf1\x9f\xf6\x27\xaf\xe7\xf3\xcc\xfd\xc5\xba\x77\x27\xe6\xe6\xce\x8c"
      "\x45\xf4\x27\x47\xf3\xfc\xa2\xf5\xe3\xb7\x5e\x5b\xe6\xcb\xf2\xd9\xf1\x3f"
      "\x7c\x60\xe9\xf3\x7f\x77\xf1\x9a\x2c\xfe\xfb\x23\x22\x3b\x88\x1f\x88\x88"
      "\x07\x23\xe2\xa1\xa2\xee\x0f\x47\xc4\x23\x11\x71\x60\x99\x18\x7f\x78\x6e"
      "\xe5\xf8\x23\xad\xa8\xfd\x2f\x46\x4c\x2d\x79\xfd\xbb\x79\xfc\xb7\xb4\xff"
      "\xea\x13\x3d\x27\xbf\xff\xa6\xdd\xfe\xff\x59\xfb\x1f\xce\x53\xc3\xc5\x9a"
      "\xfc\xfa\xb7\x82\xa5\xaa\x93\x5d\x2e\x5a\x2b\xb8\x96\xcf\x0e\x00\x00\x00"
      "\xfe\x2b\xd2\xfc\x37\xf0\x49\x3a\x72\x33\x9d\xa6\x23\x23\x8d\xdf\xf0\xef"
      "\x89\xff\xa5\xf5\x99\xd9\xb9\xc7\x8f\xcf\xbc\x7d\x7a\xaa\xf1\x5b\xf9\xc1"
      "\xe8\x4b\xcb\x91\xae\x81\x62\x3c\xb4\x3e\x5d\xaf\x8d\x25\xf3\xc5\x3b\x36"
      "\xc6\x47\xc7\x8b\xb1\xe2\x72\xbc\xf4\x50\x31\x6e\xfc\x69\xcf\xb6\x3c\x3f"
      "\x32\x39\x53\x9f\xaa\x38\x76\xe8\x76\xdb\xdb\x9c\xff\x99\xdf\x7b\xaa\xae"
      "\x1d\xb0\xce\xb6\x2d\xb9\x76\xbc\xff\x8e\x57\x04\xa8\x40\xeb\x3c\x7a\xba"
      "\x38\x7b\xe1\x95\x70\x31\x80\xcd\xca\xff\xb5\xa1\x7b\xad\x70\xfe\x37\xff"
      "\x0f\x06\xd8\x64\xdc\xff\xa1\x7b\x2d\x75\xfe\x5f\x68\xc9\x9b\x0b\x80\xcd"
      "\xc9\xfd\x1f\xba\x97\xf3\x1f\xba\x54\xfa\x5d\xd5\x35\x00\x2a\xe4\xfe\x0f"
      "\x5d\x69\x2d\xff\xeb\x5f\xc7\xc4\xd6\x8d\x51\x8d\x6a\x12\x1b\xb5\x51\xf2"
      "\x44\x44\x99\x48\x37\x44\x7d\x24\xd6\x29\x51\xf5\x95\x09\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\xa0\x33\xfe\x0e\x00\x00\xff\xff\x2b\x62\xe6"
      "\x8b",
      1135);
  syz_mount_image(/*fs=*/0x200000000180, /*dir=*/0x2000000001c0,
                  /*flags=MS_I_VERSION|MS_NOATIME|0x300*/ 0x800700,
                  /*opts=*/0x2000000007c0, /*chdir=*/1, /*size=*/0x46f,
                  /*img=*/0x200000000bc0);
  //  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 31 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x0 (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 {
  //              usrquota: buffer: {75 73 72 71 75 6f 74 61} (length 0x8)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              nodelalloc: buffer: {6e 6f 64 65 6c 61 6c 6c 6f 63} (length
  //              0xa)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //    chdir: int8 = 0xff (1 bytes)
  //    size: len = 0x25e (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x25e)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x200000000100, "ext4\000", 5);
  memcpy((void*)0x200000000180, "./file1\000", 8);
  memcpy((void*)0x200000000280, "usrquota", 8);
  *(uint8_t*)0x200000000288 = 0x2c;
  memcpy((void*)0x200000000289, "nodelalloc", 10);
  *(uint8_t*)0x200000000293 = 0x2c;
  *(uint8_t*)0x200000000294 = 0;
  memcpy(
      (void*)0x200000000e80,
      "\x78\x9c\xec\xdd\x4d\x48\x1c\x67\x18\x07\xf0\x67\x66\x77\x6b\xd5\xa5\xd8"
      "\xf6\x52\x28\xfd\x80\x52\x4a\x2b\x88\xbd\x15\x7a\xb1\x97\x16\x84\x22\x52"
      "\x4a\xa1\x2d\x58\x4a\xe9\xa5\x45\x0b\x56\xe9\x4d\x7b\xca\x25\x87\xe4\x18"
      "\x92\xe0\x29\x17\x09\xb9\xc5\xe4\x18\xbc\x48\x2e\x09\x81\x9c\x4c\xe2\xc1"
      "\x5c\x02\x89\xe4\x10\xc9\x21\x09\xd9\xb0\x3b\x2b\xf8\x95\x68\xdc\x75\x27"
      "\x64\x7e\x3f\x58\xe7\xc3\x77\xde\xe7\x1d\x66\xfe\xef\x88\x38\x18\x40\x61"
      "\xf5\x45\xc4\x50\x44\x94\x22\xa2\x3f\x22\x2a\x11\x91\x6c\x6e\xf0\x71\xf6"
      "\xe9\x6b\x6e\xce\x75\x2f\x8d\x45\xd4\x6a\x3f\xdc\x4f\x1a\xed\xb2\xed\xcc"
      "\xc6\x71\xbd\x11\x31\x1b\x11\x5f\x45\xc4\x62\x9a\xc4\x5f\xe5\x88\xe9\x85"
      "\x5f\x56\x1f\x2e\x7f\xf7\xd9\xd1\xa9\xca\xa7\x67\x16\x7e\xee\xee\xe8\x49"
      "\x36\xad\xad\xae\x7c\xbf\x7e\x7a\xe4\xc8\xf9\xe1\x2f\xa7\xaf\x5e\xbf\x3b"
      "\x92\xc4\x50\x54\xb7\x9c\x57\xfb\x25\xbb\xec\x2b\x27\x11\xef\x1c\x46\xb1"
      "\x57\x44\x52\xce\x7b\x04\xec\xc7\xe8\x7f\xe7\x6e\xd4\x73\xff\x6e\x44\x7c"
      "\xd2\xc8\x7f\x25\xd2\xc8\x2e\xde\xb1\xc9\x37\x16\x2b\xf1\xc5\xa9\xe7\x1d"
      "\x7b\xfc\xde\xb5\xf7\x3b\x39\x56\xa0\xfd\x6a\xb5\x4a\xfd\x19\x38\x5b\x03"
      "\x0a\x27\x8d\x88\x6a\x24\xe9\x40\x44\x64\xeb\x69\x3a\x30\x90\xfd\x0c\x7f"
      "\xb3\xd4\x93\xfe\x3d\x31\xf9\x6f\xff\x9f\x13\x53\xe3\x7f\xe4\x3d\x53\x01"
      "\xed\x52\x8d\x58\xf9\xf6\x62\xd7\x85\xde\x6d\xf9\xbf\x53\xca\xf2\x0f\xbc"
      "\xa6\xb2\x5f\x4a\xad\xfc\x38\x3a\x7f\xab\xbe\xb2\x5e\xca\x7b\x40\x40\x47"
      "\x7c\x90\x2d\xea\xcf\xff\xfe\xdf\x66\x3e\x0f\xf9\x87\xc2\x91\x7f\x28\x2e"
      "\xf9\x87\xe2\x92\x7f\x28\x2e\xf9\x87\xe2\x92\x7f\x28\x2e\xf9\x87\x82\x78"
      "\xda\xfc\x63\xbf\x4d\xbb\xe4\x1f\x8a\x4b\xfe\xa1\xb8\x0e\x9c\xff\x13\x4f"
      "\x0e\x6f\x50\x40\x47\x6c\xce\x3f\x00\x50\x2c\xb5\xae\x03\xbd\x35\xdc\xde"
      "\x97\x90\x81\x5c\xe4\x3d\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x3b\xcd\x75\x2f\x8d\x6d\x7c\xda\xd3\x63\x79\xcf\x16\x97"
      "\x4f\x46\xac\x7d\x93\x35\xdd\x59\xbf\xd4\xf8\x7f\xc4\x11\x6f\x36\xbe\xf6"
      "\x3c\x48\xb6\xf4\x98\xec\xab\xc2\x8b\xfd\xfa\x51\x8b\x1d\xb4\xe8\x6c\xce"
      "\x6f\x5f\xbf\x75\x3b\xdf\xfa\x57\x3e\xcc\xb7\xfe\xcc\x78\xc4\xec\xff\x11"
      "\x31\x58\x2e\xef\xbc\xff\x92\xe6\xfd\x77\x70\x6f\xef\xf1\xfd\xca\xef\x2d"
      "\x16\x78\x49\xc9\xb6\xed\xaf\x7f\xea\x6c\xfd\xed\x1e\xcf\xe7\x5b\x7f\x78"
      "\x39\xe2\x52\x7d\xfe\x19\xdc\x6d\xfe\x49\xe3\xbd\xc6\x72\xf7\xf9\xa7\x5a"
      "\xbf\x7e\x2d\xd6\xff\xe7\x51\x8b\x1d\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\xd0\x31\xcf\x02\x00\x00\xff\xff\xc1\xda\x75\xcf",
      606);
  syz_mount_image(/*fs=*/0x200000000100, /*dir=*/0x200000000180, /*flags=*/0,
                  /*opts=*/0x200000000280, /*chdir=*/-1, /*size=*/0x25e,
                  /*img=*/0x200000000e80);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x101042 (4 bytes)
  //    mode: open_mode = 0x45 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x2000000000c0, "./file1\000", 8);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x2000000000c0ul,
                /*flags=O_SYNC|O_CREAT|O_RDWR*/ 0x101042,
                /*mode=S_IXOTH|S_IROTH|S_IXUSR*/ 0x45);
  if (res != -1)
    r[0] = res;
  //  ioctl$FS_IOC_SETFLAGS arguments: [
  //    fd: fd (resource)
  //    cmd: const = 0x40086602 (4 bytes)
  //    arg: ptr[in, fs_flags] {
  //      fs_flags = 0x1 (4 bytes)
  //    }
  //  ]
  *(uint32_t*)0x200000000140 = 1;
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x40086602,
          /*arg=*/0x200000000140ul);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x2141 (4 bytes)
  //    mode: open_mode = 0x59 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000080, "./file1\000", 8);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000080ul,
                /*flags=O_NOCTTY|O_CREAT|FASYNC|O_WRONLY*/ 0x2141,
                /*mode=S_IXOTH|S_IXGRP|S_IWGRP|S_IXUSR*/ 0x59);
  if (res != -1)
    r[1] = res;
  //  ioctl$EXT4_IOC_MIGRATE arguments: [
  //    fd: fd (resource)
  //    cmd: const = 0x6609 (4 bytes)
  //  ]
  syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x6609, 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;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}