// https://syzkaller.appspot.com/bug?id=4e27f87742477a0c3e872daaaa0d4df5c675dc70
// 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 __thread int clone_ongoing;
static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) {
    exit(sig);
  }
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0;
  int valid = addr < prog_start || addr > prog_end;
  if (skip && valid) {
    _longjmp(segv_env, 1);
  }
  exit(sig);
}

static void install_segv_handler(void)
{
  struct sigaction sa;
  memset(&sa, 0, sizeof(sa));
  sa.sa_handler = SIG_IGN;
  syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8);
  syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8);
  memset(&sa, 0, sizeof(sa));
  sa.sa_sigaction = segv_handler;
  sa.sa_flags = SA_NODEFER | SA_SIGINFO;
  sigaction(SIGSEGV, &sa, NULL);
  sigaction(SIGBUS, &sa, NULL);
}

#define NONFAILING(...)                                                        \
  ({                                                                           \
    int ok = 1;                                                                \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    if (_setjmp(segv_env) == 0) {                                              \
      __VA_ARGS__;                                                             \
    } else                                                                     \
      ok = 0;                                                                  \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    ok;                                                                        \
  })

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

//% This code is derived from puff.{c,h}, found in the zlib development. The
//% original files come with the following copyright notice:

//% Copyright (C) 2002-2013 Mark Adler, all rights reserved
//% version 2.3, 21 Jan 2013
//% This software is provided 'as-is', without any express or implied
//% warranty.  In no event will the author be held liable for any damages
//% arising from the use of this software.
//% Permission is granted to anyone to use this software for any purpose,
//% including commercial applications, and to alter it and redistribute it
//% freely, subject to the following restrictions:
//% 1. The origin of this software must not be misrepresented; you must not
//%    claim that you wrote the original software. If you use this software
//%    in a product, an acknowledgment in the product documentation would be
//%    appreciated but is not required.
//% 2. Altered source versions must be plainly marked as such, and must not be
//%    misrepresented as being the original software.
//% 3. This notice may not be removed or altered from any source distribution.
//% Mark Adler    madler@alumni.caltech.edu

//% BEGIN CODE DERIVED FROM puff.{c,h}

#define MAXBITS 15
#define MAXLCODES 286
#define MAXDCODES 30
#define MAXCODES (MAXLCODES + MAXDCODES)
#define FIXLCODES 288

struct puff_state {
  unsigned char* out;
  unsigned long outlen;
  unsigned long outcnt;
  const unsigned char* in;
  unsigned long inlen;
  unsigned long incnt;
  int bitbuf;
  int bitcnt;
  jmp_buf env;
};
static int puff_bits(struct puff_state* s, int need)
{
  long val = s->bitbuf;
  while (s->bitcnt < need) {
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    val |= (long)(s->in[s->incnt++]) << s->bitcnt;
    s->bitcnt += 8;
  }
  s->bitbuf = (int)(val >> need);
  s->bitcnt -= need;
  return (int)(val & ((1L << need) - 1));
}
static int puff_stored(struct puff_state* s)
{
  s->bitbuf = 0;
  s->bitcnt = 0;
  if (s->incnt + 4 > s->inlen)
    return 2;
  unsigned len = s->in[s->incnt++];
  len |= s->in[s->incnt++] << 8;
  if (s->in[s->incnt++] != (~len & 0xff) ||
      s->in[s->incnt++] != ((~len >> 8) & 0xff))
    return -2;
  if (s->incnt + len > s->inlen)
    return 2;
  if (s->outcnt + len > s->outlen)
    return 1;
  for (; len--; s->outcnt++, s->incnt++) {
    if (s->in[s->incnt])
      s->out[s->outcnt] = s->in[s->incnt];
  }
  return 0;
}
struct puff_huffman {
  short* count;
  short* symbol;
};
static int puff_decode(struct puff_state* s, const struct puff_huffman* h)
{
  int first = 0;
  int index = 0;
  int bitbuf = s->bitbuf;
  int left = s->bitcnt;
  int code = first = index = 0;
  int len = 1;
  short* next = h->count + 1;
  while (1) {
    while (left--) {
      code |= bitbuf & 1;
      bitbuf >>= 1;
      int count = *next++;
      if (code - count < first) {
        s->bitbuf = bitbuf;
        s->bitcnt = (s->bitcnt - len) & 7;
        return h->symbol[index + (code - first)];
      }
      index += count;
      first += count;
      first <<= 1;
      code <<= 1;
      len++;
    }
    left = (MAXBITS + 1) - len;
    if (left == 0)
      break;
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    bitbuf = s->in[s->incnt++];
    if (left > 8)
      left = 8;
  }
  return -10;
}
static int puff_construct(struct puff_huffman* h, const short* length, int n)
{
  int len;
  for (len = 0; len <= MAXBITS; len++)
    h->count[len] = 0;
  int symbol;
  for (symbol = 0; symbol < n; symbol++)
    (h->count[length[symbol]])++;
  if (h->count[0] == n)
    return 0;
  int left = 1;
  for (len = 1; len <= MAXBITS; len++) {
    left <<= 1;
    left -= h->count[len];
    if (left < 0)
      return left;
  }
  short offs[MAXBITS + 1];
  offs[1] = 0;
  for (len = 1; len < MAXBITS; len++)
    offs[len + 1] = offs[len] + h->count[len];
  for (symbol = 0; symbol < n; symbol++)
    if (length[symbol] != 0)
      h->symbol[offs[length[symbol]]++] = symbol;
  return left;
}
static int puff_codes(struct puff_state* s, const struct puff_huffman* lencode,
                      const struct puff_huffman* distcode)
{
  static const short lens[29] = {3,  4,  5,  6,   7,   8,   9,   10,  11, 13,
                                 15, 17, 19, 23,  27,  31,  35,  43,  51, 59,
                                 67, 83, 99, 115, 131, 163, 195, 227, 258};
  static const short lext[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2,
                                 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0};
  static const short dists[30] = {
      1,    2,    3,    4,    5,    7,    9,    13,    17,    25,
      33,   49,   65,   97,   129,  193,  257,  385,   513,   769,
      1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577};
  static const short dext[30] = {0, 0, 0,  0,  1,  1,  2,  2,  3,  3,
                                 4, 4, 5,  5,  6,  6,  7,  7,  8,  8,
                                 9, 9, 10, 10, 11, 11, 12, 12, 13, 13};
  int symbol;
  do {
    symbol = puff_decode(s, lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 256) {
      if (s->outcnt == s->outlen)
        return 1;
      if (symbol)
        s->out[s->outcnt] = symbol;
      s->outcnt++;
    } else if (symbol > 256) {
      symbol -= 257;
      if (symbol >= 29)
        return -10;
      int len = lens[symbol] + puff_bits(s, lext[symbol]);
      symbol = puff_decode(s, distcode);
      if (symbol < 0)
        return symbol;
      unsigned dist = dists[symbol] + puff_bits(s, dext[symbol]);
      if (dist > s->outcnt)
        return -11;
      if (s->outcnt + len > s->outlen)
        return 1;
      while (len--) {
        if (dist <= s->outcnt && s->out[s->outcnt - dist])
          s->out[s->outcnt] = s->out[s->outcnt - dist];
        s->outcnt++;
      }
    }
  } while (symbol != 256);
  return 0;
}
static int puff_fixed(struct puff_state* s)
{
  static int virgin = 1;
  static short lencnt[MAXBITS + 1], lensym[FIXLCODES];
  static short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  static struct puff_huffman lencode, distcode;
  if (virgin) {
    lencode.count = lencnt;
    lencode.symbol = lensym;
    distcode.count = distcnt;
    distcode.symbol = distsym;
    short lengths[FIXLCODES];
    int symbol;
    for (symbol = 0; symbol < 144; symbol++)
      lengths[symbol] = 8;
    for (; symbol < 256; symbol++)
      lengths[symbol] = 9;
    for (; symbol < 280; symbol++)
      lengths[symbol] = 7;
    for (; symbol < FIXLCODES; symbol++)
      lengths[symbol] = 8;
    puff_construct(&lencode, lengths, FIXLCODES);
    for (symbol = 0; symbol < MAXDCODES; symbol++)
      lengths[symbol] = 5;
    puff_construct(&distcode, lengths, MAXDCODES);
    virgin = 0;
  }
  return puff_codes(s, &lencode, &distcode);
}
static int puff_dynamic(struct puff_state* s)
{
  static const short order[19] = {16, 17, 18, 0, 8,  7, 9,  6, 10, 5,
                                  11, 4,  12, 3, 13, 2, 14, 1, 15};
  int nlen = puff_bits(s, 5) + 257;
  int ndist = puff_bits(s, 5) + 1;
  int ncode = puff_bits(s, 4) + 4;
  if (nlen > MAXLCODES || ndist > MAXDCODES)
    return -3;
  short lengths[MAXCODES];
  int index;
  for (index = 0; index < ncode; index++)
    lengths[order[index]] = puff_bits(s, 3);
  for (; index < 19; index++)
    lengths[order[index]] = 0;
  short lencnt[MAXBITS + 1], lensym[MAXLCODES];
  struct puff_huffman lencode = {lencnt, lensym};
  int err = puff_construct(&lencode, lengths, 19);
  if (err != 0)
    return -4;
  index = 0;
  while (index < nlen + ndist) {
    int symbol;
    int len;
    symbol = puff_decode(s, &lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 16)
      lengths[index++] = symbol;
    else {
      len = 0;
      if (symbol == 16) {
        if (index == 0)
          return -5;
        len = lengths[index - 1];
        symbol = 3 + puff_bits(s, 2);
      } else if (symbol == 17)
        symbol = 3 + puff_bits(s, 3);
      else
        symbol = 11 + puff_bits(s, 7);
      if (index + symbol > nlen + ndist)
        return -6;
      while (symbol--)
        lengths[index++] = len;
    }
  }
  if (lengths[256] == 0)
    return -9;
  err = puff_construct(&lencode, lengths, nlen);
  if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1]))
    return -7;
  short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  struct puff_huffman distcode = {distcnt, distsym};
  err = puff_construct(&distcode, lengths + nlen, ndist);
  if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1]))
    return -8;
  return puff_codes(s, &lencode, &distcode);
}
static int puff(unsigned char* dest, unsigned long* destlen,
                const unsigned char* source, unsigned long sourcelen)
{
  struct puff_state s = {
      .out = dest,
      .outlen = *destlen,
      .outcnt = 0,
      .in = source,
      .inlen = sourcelen,
      .incnt = 0,
      .bitbuf = 0,
      .bitcnt = 0,
  };
  int err;
  if (setjmp(s.env) != 0)
    err = 2;
  else {
    int last;
    do {
      last = puff_bits(&s, 1);
      int type = puff_bits(&s, 2);
      err = type == 0 ? puff_stored(&s)
                      : (type == 1 ? puff_fixed(&s)
                                   : (type == 2 ? puff_dynamic(&s) : -1));
      if (err != 0)
        break;
    } while (!last);
  }
  *destlen = s.outcnt;
  return err;
}

//% END CODE DERIVED FROM puff.{c,h}

#define ZLIB_HEADER_WIDTH 2

static int puff_zlib_to_file(const unsigned char* source,
                             unsigned long sourcelen, int dest_fd)
{
  if (sourcelen < ZLIB_HEADER_WIDTH)
    return 0;
  source += ZLIB_HEADER_WIDTH;
  sourcelen -= ZLIB_HEADER_WIDTH;
  const unsigned long max_destlen = 132 << 20;
  void* ret = mmap(0, max_destlen, PROT_WRITE | PROT_READ,
                   MAP_PRIVATE | MAP_ANON, -1, 0);
  if (ret == MAP_FAILED)
    return -1;
  unsigned char* dest = (unsigned char*)ret;
  unsigned long destlen = max_destlen;
  int err = puff(dest, &destlen, source, sourcelen);
  if (err) {
    munmap(dest, max_destlen);
    errno = -err;
    return -1;
  }
  if (write(dest_fd, dest, destlen) != (ssize_t)destlen) {
    munmap(dest, max_destlen);
    return -1;
  }
  return munmap(dest, max_destlen);
}

static int setup_loop_device(unsigned char* data, unsigned long size,
                             const char* loopname, int* loopfd_p)
{
  int err = 0, loopfd = -1;
  int memfd = syscall(__NR_memfd_create, "syzkaller", 0);
  if (memfd == -1) {
    err = errno;
    goto error;
  }
  if (puff_zlib_to_file(data, size, memfd)) {
    err = errno;
    goto error_close_memfd;
  }
  loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    err = errno;
    goto error_close_memfd;
  }
  if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
    if (errno != EBUSY) {
      err = errno;
      goto error_close_loop;
    }
    ioctl(loopfd, LOOP_CLR_FD, 0);
    usleep(1000);
    if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
      err = errno;
      goto error_close_loop;
    }
  }
  close(memfd);
  *loopfd_p = loopfd;
  return 0;

error_close_loop:
  close(loopfd);
error_close_memfd:
  close(memfd);
error:
  errno = err;
  return -1;
}

static void reset_loop_device(const char* loopname)
{
  int loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    return;
  }
  if (ioctl(loopfd, LOOP_CLR_FD, 0)) {
  }
  close(loopfd);
}

static long syz_mount_image(volatile long fsarg, volatile long dir,
                            volatile long flags, volatile long optsarg,
                            volatile long change_dir,
                            volatile unsigned long size, volatile long image)
{
  unsigned char* data = (unsigned char*)image;
  int res = -1, err = 0, need_loop_device = !!size;
  char* mount_opts = (char*)optsarg;
  char* target = (char*)dir;
  char* fs = (char*)fsarg;
  char* source = NULL;
  char loopname[64];
  if (need_loop_device) {
    int loopfd;
    memset(loopname, 0, sizeof(loopname));
    snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
    if (setup_loop_device(data, size, loopname, &loopfd) == -1)
      return -1;
    close(loopfd);
    source = loopname;
  }
  mkdir(target, 0777);
  char opts[256];
  memset(opts, 0, sizeof(opts));
  if (strlen(mount_opts) > (sizeof(opts) - 32)) {
  }
  strncpy(opts, mount_opts, sizeof(opts) - 32);
  if (strcmp(fs, "iso9660") == 0) {
    flags |= MS_RDONLY;
  } else if (strncmp(fs, "ext", 3) == 0) {
    bool has_remount_ro = false;
    char* remount_ro_start = strstr(opts, "errors=remount-ro");
    if (remount_ro_start != NULL) {
      char after = *(remount_ro_start + strlen("errors=remount-ro"));
      char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1);
      has_remount_ro = ((before == '\0' || before == ',') &&
                        (after == '\0' || after == ','));
    }
    if (strstr(opts, "errors=panic") || !has_remount_ro)
      strcat(opts, ",errors=continue");
  } else if (strcmp(fs, "xfs") == 0) {
    strcat(opts, ",nouuid");
  } else if (strncmp(fs, "gfs2", 4) == 0 &&
             (strstr(opts, "errors=panic") || strstr(opts, "debug"))) {
    strcat(opts, ",errors=withdraw");
  }
  res = mount(source, target, fs, flags, opts);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  res = open(target, O_RDONLY | O_DIRECTORY);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  if (change_dir) {
    res = chdir(target);
    if (res == -1) {
      err = errno;
    }
  }

error_clear_loop:
  if (need_loop_device)
    reset_loop_device(loopname);
  errno = err;
  return res;
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  for (int i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

static void reset_loop()
{
  char buf[64];
  snprintf(buf, sizeof(buf), "/dev/loop%llu", procid);
  int loopfd = open(buf, O_RDWR);
  if (loopfd != -1) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
}

static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  write_file("/proc/self/oom_score_adj", "1000");
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

void execute_one(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  syz_mount_image$hfsplus arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {68 66 73 70 6c 75 73 00} (length 0x8)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    flags: mount_flags = 0x0 (8 bytes)
  //    opts: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYBLOB: buffer: {6e 6c 73 3d 63 70 39 35 30 2c 6e 6f 62 61 72 72
  //          69 65 72 2c 66 6f 72 63 65 2c 75 6d 61 73 6b 3d 30 30 30 30 30 30
  //          30 30 30 30 30 30 30 30 30 30 30 30 30 31 30 30 30 2c 00 d0 12 80
  //          f5 32 b0 f4 cf 3b 36 fd 5c 6e f6 42 69 a5 33 fc 6b 05 2f 92 ff ca
  //          c0 8c a1 85 19 d5 b3 71 1b 97 ec 29 1e 41 35 5f a6 5d 9c 0d 15 e7
  //          c1 0c 63 ab 0b ba 73 6f 92 ab 9d 30 47 8a e1 45 2a 01 7b e9 8c 2a
  //          05 07 fe bf 29 5d b1 7e 98 d0 ff fc 0d 34 92 64 ce 2a cd ed c0 a6
  //          1a e1 32 d4 02 4d 39 e1 1d e2 dc 86 79 fa c7 ef cb 61 37 aa 2e 36
  //          1c 5f 6c b8 51 e3 a6 0b a0 5f 83 46 66 69 46 67 f2 7f 0d 63 2c f9
  //          a8 5f e2 47 e2 72 51 ac bd 73 9f f8 50 88 cb 20 10 10 90 01 32 00
  //          00 00 00 00 00 00 00 00 00 25 93 d6 00 00 00 00} (length 0xe6)
  //        }
  //      }
  //    }
  //    chdir: int8 = 0xfe (1 bytes)
  //    size: len = 0x69e (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x69e)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000003000, "hfsplus\000", 8));
  NONFAILING(memcpy((void*)0x200000000240, "./bus\000", 6));
  NONFAILING(memcpy(
      (void*)0x200000003f80,
      "\x6e\x6c\x73\x3d\x63\x70\x39\x35\x30\x2c\x6e\x6f\x62\x61\x72\x72\x69\x65"
      "\x72\x2c\x66\x6f\x72\x63\x65\x2c\x75\x6d\x61\x73\x6b\x3d\x30\x30\x30\x30"
      "\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x31\x30\x30"
      "\x30\x2c\x00\xd0\x12\x80\xf5\x32\xb0\xf4\xcf\x3b\x36\xfd\x5c\x6e\xf6\x42"
      "\x69\xa5\x33\xfc\x6b\x05\x2f\x92\xff\xca\xc0\x8c\xa1\x85\x19\xd5\xb3\x71"
      "\x1b\x97\xec\x29\x1e\x41\x35\x5f\xa6\x5d\x9c\x0d\x15\xe7\xc1\x0c\x63\xab"
      "\x0b\xba\x73\x6f\x92\xab\x9d\x30\x47\x8a\xe1\x45\x2a\x01\x7b\xe9\x8c\x2a"
      "\x05\x07\xfe\xbf\x29\x5d\xb1\x7e\x98\xd0\xff\xfc\x0d\x34\x92\x64\xce\x2a"
      "\xcd\xed\xc0\xa6\x1a\xe1\x32\xd4\x02\x4d\x39\xe1\x1d\xe2\xdc\x86\x79\xfa"
      "\xc7\xef\xcb\x61\x37\xaa\x2e\x36\x1c\x5f\x6c\xb8\x51\xe3\xa6\x0b\xa0\x5f"
      "\x83\x46\x66\x69\x46\x67\xf2\x7f\x0d\x63\x2c\xf9\xa8\x5f\xe2\x47\xe2\x72"
      "\x51\xac\xbd\x73\x9f\xf8\x50\x88\xcb\x20\x10\x10\x90\x01\x32\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x25\x93\xd6\x00\x00\x00\x00",
      230));
  NONFAILING(memcpy(
      (void*)0x200000005e40,
      "\x78\x9c\xec\xdd\x4b\x6c\x1c\x77\x1d\x07\xf0\xef\xac\x37\x7e\x04\x94\xba"
      "\x6d\xd2\x16\x84\xd4\xa8\x11\x01\x1a\x91\xd8\x59\x4a\x52\x01\x22\x42\x08"
      "\xe5\x50\xa1\x48\x5c\x7a\xe1\x60\x25\x4e\x63\x65\x93\x46\x8e\x8b\xdc\x0a"
      "\x11\x97\xe7\x95\x63\x0f\x3d\x14\xa1\x70\xe8\x09\xf5\x80\x54\xc4\x01\x51"
      "\xce\x48\x48\x9c\xb8\xe4\x1e\x89\xbb\x4f\x2c\x9a\xd9\xd9\xf5\x3a\x1b\x6f"
      "\xbc\x6e\x92\x75\xe8\xe7\x23\xcd\xce\x7f\xe6\xff\xfa\xcd\xcf\x33\xb3\x2f"
      "\x59\x1b\xe0\x33\xeb\xfc\xeb\x39\xb0\x91\x22\xe7\x4f\xbc\xb6\x5e\x6e\xdf"
      "\xb9\xdd\x6a\xdf\xb9\xdd\xba\xd6\x2b\x27\x99\x49\xd2\x48\x9a\xdd\x55\x8a"
      "\xeb\x49\xf1\x49\x72\x2e\xdd\x25\x5f\x28\x77\xd6\xc3\x15\x3b\xcd\xf3\xca"
      "\xdd\x8f\xdf\x3f\xfe\xde\x87\xad\xee\x56\xb3\x5e\xaa\xf6\x8d\x51\xfd\x86"
      "\xdc\xb7\xe5\x46\xbd\xe4\x68\x92\xa9\x7a\x3d\xd6\xb0\x23\xc6\xbb\xb8\x35"
      "\xde\x1e\x15\xfd\x50\xca\x84\x1d\xeb\x25\x0e\x26\xad\x33\x64\x63\x9c\xee"
      "\x7b\xbd\xc0\x80\x7d\xa4\xe8\x3e\x6f\x0e\x99\x4f\x0e\x26\x99\xad\x5f\x07"
      "\xa4\xbe\x3b\x34\x1e\x6f\x74\x0f\xdf\x58\x77\x39\x00\x00\x00\x78\x42\x3d"
      "\xb5\x99\xcd\xac\xe7\xd0\xa4\xe3\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80"
      "\x27\x49\xfd\xfb\xff\x45\xbd\x34\x7a\xe5\xa3\x29\x7a\xbf\xff\x3f\x5d\xed"
      "\x9b\xae\x9a\x4f\x4f\x3a\xde\x4f\xeb\xaf\x93\x0e\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x1e\x82\x17\x37\xb3\x99\xf5\x1c\xea\x6d\x77\x8a\xea\x3b\xff\x97"
      "\xaa\x8d\xc3\xd5\xe3\xe7\xf2\x56\x6e\x66\x39\xab\x39\x99\xf5\x2c\x65\x2d"
      "\x6b\x59\xcd\x62\x92\xf9\xaa\xfe\xdd\xea\x71\x7a\x7d\x69\x6d\x6d\x75\x71"
      "\xa7\x9e\x9d\x4e\xe7\x56\x67\xaa\xea\x79\xba\xdf\x33\x03\x3d\x4f\x0f\x85"
      "\x56\x8c\x8e\xbc\x33\xf3\xa9\x0f\x1e\x00\x00\x00\x00\x00\x00\x00\x9e\x30"
      "\x23\xbe\x2c\xff\x79\xce\x6f\x7d\xff\x0f\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\xfb\x41\x91\x4c\x75\x57\xd5\x72\xb8\x57\x9e\x4f\xa3\x99\x64"
      "\x36\xc9\x74\xd9\x6e\x23\xf9\x4b\xaf\xfc\xe4\x9a\x9a\x74\x00\x00\x00\x00"
      "\xf0\x58\x3c\xb5\x99\xcd\xac\xe7\x50\xf1\xdf\xee\x76\xa7\xa8\xde\xf3\x3f"
      "\x57\xbd\xef\x9f\xcd\x5b\xb9\x9e\xb5\xac\x64\x2d\xed\x2c\xe7\x52\xf5\x59"
      "\x40\xf7\x5d\x7f\xe3\x9f\x1b\xad\xf6\x9d\xdb\xad\x6b\xe5\x72\xcf\xa0\x9d"
      "\x62\xdc\x30\xaa\x11\xfb\x6f\xc8\xef\x37\xf3\x42\xd5\xe2\x48\xdd\x7e\x23"
      "\xc9\x0f\xf2\xa3\x9c\xc8\xd1\x5c\xc8\x6a\x56\xf2\x93\x2c\x65\x2d\xcb\x39"
      "\x9a\xef\x57\xa5\xa5\x14\x99\xaf\xc6\xfa\xf7\x77\x92\x3a\xce\xa1\x78\x67"
      "\xca\x87\x73\xdb\x42\xb9\xf0\xa0\x58\x5f\xa8\x22\x99\xcb\xe5\xac\x54\xb1"
      "\x9d\xcc\xc5\xfe\xc7\x20\x8d\x5e\x9b\x81\xd9\xfe\x34\x9d\x6c\xcb\x50\x23"
      "\xef\xfe\xa7\x8c\xec\xbb\xb5\x5d\xe6\xe8\x52\xbd\x2e\x93\xfb\xdb\x7a\xbd"
      "\x3f\xcc\x57\x07\x75\xa0\x9f\x91\x85\x3a\xf7\x65\x36\x9e\xbe\xb3\x53\xee"
      "\x93\x57\x7b\xe9\x9a\x19\x7f\xa6\x66\xbd\xa7\xd1\xff\x0c\xea\xf0\x88\x99"
      "\xf6\x9a\xf3\x83\xf5\xba\xcc\xf5\xaf\x07\x73\xfe\xe2\x6e\x23\x7e\x54\x06"
      "\x73\x5e\x46\x75\x3a\x8d\xfe\xd9\xf7\xdc\xa8\x4c\x94\xbe\xf6\xaf\xbf\x5d"
      "\xb8\xd2\xbe\x7e\xf5\xca\xe5\x9b\x27\xf6\xcf\x69\xb4\xa3\x4e\xa7\x73\x6b"
      "\xe7\xda\x7b\xcf\xbe\x56\x3f\x13\xb3\x79\x7e\xf7\x99\xd8\xd8\x21\x13\x1f"
      "\x6d\xdf\xbc\xef\x47\x86\xb3\x63\x1e\xd0\x23\x32\x5d\x67\xa3\x1b\xe3\xd6"
      "\xdd\x32\x39\x3f\x78\xb7\xec\x74\x92\xa1\xbb\xe5\x4b\x55\xdf\x43\x59\xc9"
      "\x0f\xf3\x66\x2e\x65\x39\x67\xb2\x90\xc5\x9c\xcd\x42\x5e\xcd\xe9\xb4\xb6"
      "\x9d\x61\x47\x46\xe7\xb5\xba\xd6\x1a\xe3\x5d\x6b\xc7\xbe\x5a\x17\xe6\x92"
      "\xfc\xa6\x5e\xef\x0f\x65\x5e\x9f\x1e\xc8\xeb\xe0\x9d\x6e\xbe\xaa\x1b\xdc"
      "\xb3\x95\xa5\x67\x76\x91\xa5\x31\xef\x48\xcd\x2f\xd6\x85\x72\x8e\x5f\x0c"
      "\x3c\xe3\x4c\xde\xbd\x99\x58\x1c\xc8\xc4\xb3\xa3\x33\xf1\xbb\xf2\x8c\xcc"
      "\xcd\xf6\xf5\xab\xab\x57\x96\x6e\xec\x72\xbe\xe3\xf5\xba\xbc\x6c\x7f\xb5"
      "\xfd\xf9\xf0\xf7\x0f\xe3\x78\xf6\xae\x3c\x5f\x9e\x29\xff\x58\xd5\xd6\xf6"
      "\xb3\xa3\xac\x7b\xf6\xbe\x75\x8b\x55\xdd\xe1\x7e\x5d\x63\xa8\xee\x48\xbf"
      "\xee\x41\x57\xea\x74\xfd\x1a\x6e\x78\xa4\x6e\xdd\xf3\xf7\xad\x6b\x55\x75"
      "\x2f\x0c\xd4\x6d\x7b\x95\x93\x37\xd3\xee\xbf\x0a\x01\x60\xbf\xe8\x0c\xef"
      "\x3a\xf8\xf2\xc1\xe9\xb9\xbb\x73\xff\x98\xfb\x60\xee\x97\x73\x57\xe6\x5e"
      "\x9b\xfd\xde\xcc\xd9\x99\x2f\x4d\xe7\xc0\xdf\x9b\x7f\x9e\xfa\x63\xe3\x0f"
      "\x8d\x6f\x17\x2f\xe7\x83\xfc\x2c\x87\x26\x11\x30\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfc"
      "\xbf\xb9\xf9\xf6\x3b\x57\x97\xda\xed\xe5\xd5\x7d\x58\x48\x63\xbc\x5e\xe5"
      "\xf1\x4c\x3a\xe6\xf1\x0b\x37\xe6\x92\xc7\x30\xd7\x4c\x92\x71\x7a\x75\x6e"
      "\x75\x3a\x45\xf3\xe1\x86\xf1\x51\x92\x3d\x77\xef\xfd\x56\x60\x6f\xcf\x97"
      "\xdb\xcb\xf9\xfc\x88\x5e\xcd\x81\x33\x7c\xab\xd7\xc4\xff\xdc\x0f\xa7\xf0"
      "\xad\x1f\xd7\xc9\x78\x40\xe3\xe6\x78\x97\xf9\x5c\x3d\xe0\xfe\xf9\x71\x31"
      "\xe0\xd1\x39\xb5\x76\xed\xc6\xa9\x9b\x6f\xbf\xf3\xf5\x95\x6b\x4b\x6f\x2c"
      "\xbf\xb1\x7c\xfd\xf4\xd9\x33\x67\xcf\xb4\xbe\xb9\xf8\x8d\x53\x97\x57\xda"
      "\xcb\x0b\xdd\xc7\x49\x47\x09\x3c\x0a\x5b\xcf\xfe\x93\x8e\x04\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\xd8\xad\xc7\xf1\x1f\x0b\xc3\xb3\x7e\x65\x6a\x12"
      "\xc7\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x3c\x99\xce\xbf\x9e\x03\x1b\x29\xb2\xb8\x70\x72\xa1"
      "\xdc\xbe\x73\xbb\xd5\x2e\x97\x5e\x79\xab\x65\x33\x49\x23\x49\xf1\xd3\xa4"
      "\xf8\x24\x39\x97\xee\x92\xf9\x81\xe1\x8a\x9d\xe6\x79\xe5\xee\xc7\xef\x1f"
      "\x7f\xef\xc3\xd6\xd6\x58\xcd\x5e\xfb\xc6\xa8\x7e\xbb\xb3\x51\x2f\x39\x9a"
      "\x64\xaa\x5e\xdf\xdb\x60\xd8\xcc\xae\xc6\xbb\x38\x38\x5e\x63\x2f\xe1\x15"
      "\xfd\x23\x2c\x13\x76\xac\x97\x38\x98\xb4\xff\x05\x00\x00\xff\xff\x81\x58"
      "\xfe\xb7",
      1694));
  NONFAILING(syz_mount_image(/*fs=*/0x200000003000, /*dir=*/0x200000000240,
                             /*flags=*/0, /*opts=*/0x200000003f80,
                             /*chdir=*/0xfe, /*size=*/0x69e,
                             /*img=*/0x200000005e40));
  //  syz_mount_image$msdos arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {6d 73 64 6f 73 00} (length 0x6)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 00} (length 0x2)
  //    }
  //    flags: mount_flags = 0x820f8 (8 bytes)
  //    opts: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //      }
  //    }
  //    chdir: int8 = 0x0 (1 bytes)
  //    size: len = 0x0 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x0)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000180, "msdos\000", 6));
  NONFAILING(memcpy((void*)0x200000000100, ".\000", 2));
  NONFAILING(syz_mount_image(
      /*fs=*/0x200000000180, /*dir=*/0x200000000100,
      /*flags=MS_SLAVE|MS_SYNCHRONOUS|MS_REMOUNT|MS_NOEXEC|MS_MOVE|0xc0*/
      0x820f8, /*opts=*/0x2000000001c0, /*chdir=*/0, /*size=*/0,
      /*img=*/0x200000000000));
  //  syz_mount_image$vfat arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {76 66 61 74 00} (length 0x5)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {13 13 77 c5 fc 35 d4 14 54 d5 d4 1d 29 ad 1a 60 29 59 81 46
  //      e6 be 16 6e 41 ad 0d bd 40 54 03 3c 9f 33 bb da 82 24 a2 f3 d7 72 e7
  //      63 6e 48 b3 3c bf 70 83 72 e8 f1 b9 93 3e c5 12 77 43 be 22 06 20 9e
  //      f0 2d f9 cb f2 f6 e8 80 d3 38 2f 00} (length 0x4e)
  //    }
  //    flags: mount_flags = 0x1802a53 (8 bytes)
  //    opts: nil
  //    chdir: int8 = 0xfa (1 bytes)
  //    size: len = 0x0 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x0)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000b00, "vfat\000", 5));
  NONFAILING(
      memcpy((void*)0x200000000b40,
             "\023\023w\305\3745\324\024T\325\324\035)\255\032`)"
             "Y\201F\346\276\026nA\255\r\275@T\003<\2373\273\332\202$"
             "\242\363\327r\347cnH\263<\277p\203r\350\361\271\223>"
             "\305\022wC\276\"\006 \236\360-\371\313\362\366\350\200\3238/\000",
             78));
  NONFAILING(syz_mount_image(
      /*fs=*/0x200000000b00, /*dir=*/0x200000000b40,
      /*flags=MS_I_VERSION|MS_SYNCHRONOUS|MS_STRICTATIME|MS_RDONLY|MS_NOSUID|0x2a40*/
      0x1802a53, /*opts=*/0, /*chdir=*/0xfa, /*size=*/0,
      /*img=*/0x200000000100));
  //  syz_mount_image$vfat arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {76 66 61 74 00} (length 0x5)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
  //      61 61 00} (length 0xfd)
  //    }
  //    flags: mount_flags = 0x380407b (8 bytes)
  //    opts: nil
  //    chdir: int8 = 0x81 (1 bytes)
  //    size: len = 0x0 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x0)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000080, "vfat\000", 5));
  NONFAILING(
      memcpy((void*)0x200000000440,
             "./"
             "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
             "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
             "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
             "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000",
             253));
  NONFAILING(syz_mount_image(
      /*fs=*/0x200000000080, /*dir=*/0x200000000440,
      /*flags=MS_LAZYTIME|MS_I_VERSION|MS_REC|MS_SYNCHRONOUS|MS_STRICTATIME|MS_REMOUNT|0x4b*/
      0x380407b, /*opts=*/0, /*chdir=*/0x81, /*size=*/0,
      /*img=*/0x200000000140));
}
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;
  install_segv_handler();
  loop();
  return 0;
}