// https://syzkaller.appspot.com/bug?id=61a23a58f123dfdcd48d088433589b86315f358c
// 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[3] = {0xffffffffffffffff, 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 31 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x3000046 (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 {
  //              delalloc: buffer: {64 65 6c 61 6c 6c 6f 63} (length 0x8)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              data_err_abort: buffer: {64 61 74 61 5f 65 72 72 3d 61 62 6f
  //              72 74} (length 0xe)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              barrier_val: fs_opt["barrier", fmt[hex, int32]] {
  //                name: buffer: {62 61 72 72 69 65 72} (length 0x7)
  //                eq: const = 0x3d (1 bytes)
  //                val: int32 = 0x2 (18 bytes)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              dioread_lock: buffer: {64 69 6f 72 65 61 64 5f 6c 6f 63 6b}
  //              (length 0xc)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              data_err_ignore: buffer: {64 61 74 61 5f 65 72 72 3d 69 67 6e
  //              6f 72 65} (length 0xf)
  //            }
  //            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 {
  //              data_err_ignore: buffer: {64 61 74 61 5f 65 72 72 3d 69 67 6e
  //              6f 72 65} (length 0xf)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              grpquota: buffer: {67 72 70 71 75 6f 74 61} (length 0x8)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          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 {
  //              user_xattr: buffer: {75 73 65 72 5f 78 61 74 74 72} (length
  //              0xa)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              bh: buffer: {62 68} (length 0x2)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              dioread_nolock: buffer: {64 69 6f 72 65 61 64 5f 6e 6f 6c 6f
  //              63 6b} (length 0xe)
  //            }
  //            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 = 0x563 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x563)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x200000000040, "ext4\000", 5);
  memcpy((void*)0x200000000000, "./file1\000", 8);
  memcpy((void*)0x200000000100, "delalloc", 8);
  *(uint8_t*)0x200000000108 = 0x2c;
  memcpy((void*)0x200000000109, "data_err=abort", 14);
  *(uint8_t*)0x200000000117 = 0x2c;
  memcpy((void*)0x200000000118, "barrier", 7);
  *(uint8_t*)0x20000000011f = 0x3d;
  sprintf((char*)0x200000000120, "0x%016llx", (long long)2);
  *(uint8_t*)0x200000000132 = 0x2c;
  memcpy((void*)0x200000000133, "dioread_lock", 12);
  *(uint8_t*)0x20000000013f = 0x2c;
  memcpy((void*)0x200000000140, "data_err=ignore", 15);
  *(uint8_t*)0x20000000014f = 0x2c;
  memcpy((void*)0x200000000150, "resgid", 6);
  *(uint8_t*)0x200000000156 = 0x3d;
  sprintf((char*)0x200000000157, "0x%016llx", (long long)0);
  *(uint8_t*)0x200000000169 = 0x2c;
  memcpy((void*)0x20000000016a, "data_err=ignore", 15);
  *(uint8_t*)0x200000000179 = 0x2c;
  memcpy((void*)0x20000000017a, "grpquota", 8);
  *(uint8_t*)0x200000000182 = 0x2c;
  memcpy((void*)0x200000000183, "nodioread_nolock", 16);
  *(uint8_t*)0x200000000193 = 0x2c;
  memcpy((void*)0x200000000194, "user_xattr", 10);
  *(uint8_t*)0x20000000019e = 0x2c;
  memcpy((void*)0x20000000019f, "bh", 2);
  *(uint8_t*)0x2000000001a1 = 0x2c;
  memcpy((void*)0x2000000001a2, "dioread_nolock", 14);
  *(uint8_t*)0x2000000001b0 = 0x2c;
  *(uint8_t*)0x2000000001b1 = 0;
  memcpy(
      (void*)0x2000000007c0,
      "\x78\x9c\xec\xdd\xcd\x6b\x1c\xe5\x1f\x00\xf0\xef\x6c\x36\xe9\xeb\xef\xd7"
      "\x14\x4a\x51\x11\x09\xf4\x60\xa5\x36\x69\x12\x5f\x2a\x78\xa8\x47\xd1\x62"
      "\x41\xef\x75\x49\xa6\xa1\x74\xd3\x2d\xd9\x4d\x69\x62\xc1\xf6\x60\x2f\x5e"
      "\xa4\x08\x22\x16\xc4\xbb\xde\x3d\x16\xff\x01\xff\x8a\x82\x16\x8a\x94\xa0"
      "\x07\x2f\x91\xd9\xcc\xe6\xa5\xd9\x4d\xb6\xe9\x26\xbb\xed\x7e\x3e\x30\xe1"
      "\x79\x66\x66\xf7\x79\x9e\x99\xf9\x3e\x79\x9e\x9d\x59\x36\x80\xbe\x35\x92"
      "\xfd\x29\x44\xbc\x1c\x11\xdf\x24\x11\x47\x22\x22\xc9\xb7\x15\x23\xdf\x38"
      "\xb2\xb2\xdf\xd2\xe3\x9b\x53\xd9\x92\xc4\xf2\xf2\xa7\x7f\x25\xf5\xfd\xb2"
      "\x7c\xe3\xbd\x1a\xaf\x3b\x94\x67\x5e\x8a\x88\xdf\xbe\x8a\x38\x55\xd8\x5c"
      "\x6e\x75\x61\xf1\x4a\xa9\x5c\x4e\xe7\xf2\xfc\x58\x6d\xf6\xda\x58\x75\x61"
      "\xf1\xf4\xe5\xd9\xd2\x4c\x3a\x93\x5e\x9d\x98\x9c\x3c\xfb\xf6\xe4\xc4\x7b"
      "\xef\xbe\xd3\xb1\xb6\xbe\x71\xe1\x9f\xef\x3f\xb9\xff\xe1\xd9\xaf\x4f\x2c"
      "\x7d\xf7\xcb\xc3\xa3\x77\x93\x38\x17\x87\xf3\x6d\xeb\xdb\xf1\x0c\x6e\xad"
      "\xcf\x8c\xc4\x48\x7e\x4c\x06\xe3\xdc\x13\x3b\x8e\x77\xa0\xb0\x5e\x92\x74"
      "\xbb\x02\xec\xc8\x40\x1e\xe7\x83\x91\xf5\x01\x47\x62\x20\x8f\x7a\xe0\xc5"
      "\xf7\x65\x44\x2c\x03\x7d\x2a\x11\xff\xd0\xa7\x1a\xe3\x80\xc6\xdc\xbe\x43"
      "\xf3\xe0\xe7\xc6\xa3\x0f\x56\x26\x40\x9b\xdb\x5f\x5c\xf9\x6c\x24\xf6\xd7"
      "\xe7\x46\x07\x97\x92\x0d\x33\xa3\x6c\xbe\x3b\xdc\x81\xf2\xb3\x32\x7e\xfd"
      "\xf3\xde\xdd\x6c\x89\xce\x7d\x0e\x01\xb0\xad\x5b\xb7\x23\xe2\x4c\xb1\xb8"
      "\xb9\xff\x4b\xf2\xfe\x6f\xe7\xce\xb4\xb1\xcf\x93\x65\xe8\xff\x60\xef\xdc"
      "\xcf\xc6\x3f\x6f\x36\x1b\xff\x14\x56\xc7\x3f\xd1\x64\xfc\x73\xa8\x49\xec"
      "\xee\xc4\xf6\xf1\x5f\x78\xd8\x81\x62\x5a\xca\xc6\x7f\xef\xe7\xe5\xee\xdf"
      "\x50\xfe\xea\x4d\xab\xe1\x81\x3c\xf7\xbf\xfa\x98\x6f\x30\xb9\x74\xb9\x9c"
      "\x66\x7d\xdb\xff\x23\xe2\x64\x0c\xee\xcb\xf2\x5b\xdd\xcf\x39\xbb\xf4\x60"
      "\xb9\xd5\xb6\xf5\xe3\xbf\x6c\xc9\xca\x6f\x8c\x05\xf3\x7a\x3c\x2c\xee\xdb"
      "\xf8\x9a\xe9\x52\xad\xf4\x2c\x6d\x5e\xef\xd1\xed\x88\x57\x9a\x8e\x7f\x93"
      "\xd5\xf3\x9f\x34\x39\xff\xd9\xf1\xb8\xd0\x66\x19\xc7\xd3\x7b\xaf\xb5\xda"
      "\xb6\x7d\xfb\x77\xd7\xf2\x4f\x11\xaf\x37\x9d\xff\xac\xdd\xd1\x4a\xb6\xbe"
      "\x3f\x39\x56\xbf\x1e\xc6\x1a\x57\xc5\x66\x7f\xdf\x39\xfe\xfb\xc6\x35\x6b"
      "\x47\xb2\xdb\xed\xcf\xce\xff\xc1\xad\xdb\x3f\x9c\xac\xbf\x5f\x5b\x7d\xfa"
      "\x32\x7e\xdc\xff\x6f\xda\x6a\xdb\x86\xf6\x47\xfb\xd7\xff\x50\xf2\x59\x3d"
      "\x3d\x94\xaf\xbb\x51\xaa\xd5\xe6\xc6\x23\x86\x92\x8f\x37\xaf\x9f\x58\x7b"
      "\x6d\x23\xdf\xd8\x3f\x6b\xff\xc9\x13\x5b\xf7\x7f\xcd\xae\xff\x03\x11\xf1"
      "\x79\x9b\xed\xbf\x73\xec\xe7\x57\xdb\x6a\x7f\x97\xce\xff\xf4\x53\x9d\xff"
      "\xa7\x4f\x3c\xf8\xe8\x8b\x1f\x5a\x95\xdf\x5e\xff\xf7\x56\x3d\x75\x32\x5f"
      "\xd3\x4e\xff\xd7\x6e\x05\x9f\xe5\xd8\x01\x00\x00\x00\x00\x00\x40\xaf\x29"
      "\x44\xc4\xe1\x48\x0a\xa3\xab\xe9\x42\x61\x74\x74\xe5\xf9\x8e\x63\x71\xb0"
      "\x50\xae\x54\x6b\xa7\x2e\x55\xe6\xaf\x4e\x47\xfd\xbb\xb2\xc3\x31\x58\x68"
      "\xdc\xe9\x3e\xb2\xee\x79\x88\xf1\xfc\x79\xd8\x46\x7e\xe2\x89\xfc\x64\x44"
      "\x1c\x8d\x88\x6f\x07\x0e\xd4\xf3\xa3\x53\x95\xf2\x74\xb7\x1b\x0f\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x3d\xe2\x50\x8b\xef"
      "\xff\x67\xfe\x18\xe8\x76\xed\x80\x5d\xd7\xc6\x4f\x7e\x0f\xed\x45\x3d\x80"
      "\xbd\xb7\x6d\xfc\x77\xe2\x97\x9e\x80\x9e\xd4\xc6\xff\x7f\xe0\x05\x25\xfe"
      "\xa1\x7f\x89\x7f\xe8\x5f\xe2\x1f\xfa\x97\xf8\x87\xfe\x25\xfe\xa1\x7f\x89"
      "\x7f\xe8\x5f\xe2\x1f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x3a\xea\xc2\xf9\xf3\xd9\xb2\xbc\xf4\xf8"
      "\xe6\x54\x96\x9f\xbe\xbe\x30\x7f\xa5\x72\xfd\xf4\x74\x5a\x2d\xe4\xbb\xcc"
      "\x5d\x1b\x9d\xa9\x54\x66\xca\xe9\xe8\x54\x65\x76\xbb\xf7\x2b\x57\x2a\xd7"
      "\xc6\x27\x62\xfe\xc6\x58\x2d\xad\xd6\xc6\xaa\x0b\x8b\x17\x67\x2b\xf3\x57"
      "\x6b\x17\x2f\xcf\x96\x66\xd2\x8b\xe9\xe0\xae\xb7\x08\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x9e\x3f\xd5\x85\xc5\x2b\xa5\x72"
      "\x39\x9d\x93\x90\xd8\x51\xa2\xd8\x1b\xd5\xe8\x52\xa2\xd8\x1b\xd5\xd8\x85"
      "\x44\xb7\x7b\x26\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x58"
      "\xf3\x5f\x00\x00\x00\xff\xff\x48\x7b\x31\xc7",
      1379);
  syz_mount_image(
      /*fs=*/0x200000000040, /*dir=*/0x200000000000,
      /*flags=MS_LAZYTIME|MS_STRICTATIME|MS_NOSUID|MS_NODEV|MS_MANDLOCK*/
      0x3000046, /*opts=*/0x200000000100, /*chdir=*/1, /*size=*/0x563,
      /*img=*/0x2000000007c0);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x2 (4 bytes)
  //    mode: open_mode = 0x96 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000040, "./file1\000", 8);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000040ul,
                /*flags=O_RDWR*/ 2,
                /*mode=S_IWOTH|S_IROTH|S_IWGRP|S_IWUSR*/ 0x96);
  if (res != -1)
    r[0] = res;
  //  pwrite64 arguments: [
  //    fd: fd (resource)
  //    buf: ptr[in, buffer] {
  //      buffer: {32} (length 0x1)
  //    }
  //    count: len = 0x155c2 (8 bytes)
  //    pos: intptr = 0x8000c64 (8 bytes)
  //  ]
  memset((void*)0x200000000140, 50, 1);
  syscall(__NR_pwrite64, /*fd=*/r[0], /*buf=*/0x200000000140ul,
          /*count=*/0x155c2ul, /*pos=*/0x8000c64ul);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x42 (4 bytes)
  //    mode: open_mode = 0x0 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000040, "./file1\000", 8);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000040ul,
                /*flags=O_CREAT|O_RDWR*/ 0x42, /*mode=*/0);
  if (res != -1)
    r[1] = res;
  //  sendfile arguments: [
  //    fdout: fd (resource)
  //    fdin: fd (resource)
  //    off: nil
  //    count: intptr = 0xe3aa6ea (8 bytes)
  //  ]
  syscall(__NR_sendfile, /*fdout=*/r[1], /*fdin=*/r[1], /*off=*/0ul,
          /*count=*/0xe3aa6eaul);
  //  truncate arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    len: intptr = 0x42d9 (8 bytes)
  //  ]
  memcpy((void*)0x2000000002c0, "./file1\000", 8);
  syscall(__NR_truncate, /*file=*/0x2000000002c0ul, /*len=*/0x42d9ul);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x42 (4 bytes)
  //    mode: open_mode = 0x0 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000440, "./file1\000", 8);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000440ul,
                /*flags=O_CREAT|O_RDWR*/ 0x42, /*mode=*/0);
  if (res != -1)
    r[2] = res;
  //  write$P9_RREADLINK arguments: [
  //    fd: wfd9p (resource)
  //    data: ptr[in, p9_msg[P9_RREADLINK, p9_rreadlink]] {
  //      p9_msg[P9_RREADLINK, p9_rreadlink] {
  //        size: bytesize = 0xffffffffffffff23 (4 bytes)
  //        type: const = 0x17 (1 bytes)
  //        tag: int16 = 0x2 (2 bytes)
  //        payload: p9_rreadlink {
  //          target_len: len = 0x7 (2 bytes)
  //          target: buffer: {2e 2f 66 69 6c 65 30} (length 0x7)
  //        }
  //      }
  //    }
  //    size: bytesize = 0xfffffdab (8 bytes)
  //  ]
  *(uint32_t*)0x200000000000 = 0xffffff23;
  *(uint8_t*)0x200000000004 = 0x17;
  *(uint16_t*)0x200000000005 = 2;
  *(uint16_t*)0x200000000007 = 7;
  memcpy((void*)0x200000000009, "./file0", 7);
  syscall(__NR_write, /*fd=*/r[2], /*data=*/0x200000000000ul,
          /*size=*/0xfffffdabul);
  //  sync arguments: [
  //  ]
  syscall(__NR_sync);
}
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;
}