// https://syzkaller.appspot.com/bug?id=04e95388a1b71c0e15b667b54b34ad3a60a9d933
// 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");
  }
  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 (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  NONFAILING(memcpy((void*)0x20000000, "hfs\000", 4));
  NONFAILING(
      memcpy((void*)0x20000280,
             "\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(memcpy((void*)0x20000080, "dir_umask", 9));
  NONFAILING(*(uint8_t*)0x20000089 = 0x3d);
  NONFAILING(sprintf((char*)0x2000008a, "%023llo", (long long)4));
  NONFAILING(*(uint8_t*)0x200000a1 = 0x2c);
  NONFAILING(memcpy((void*)0x200000a2, "file_umask", 10));
  NONFAILING(*(uint8_t*)0x200000ac = 0x3d);
  NONFAILING(sprintf((char*)0x200000ad, "%023llo", (long long)0x2e0));
  NONFAILING(*(uint8_t*)0x200000c4 = 0x2c);
  NONFAILING(memcpy((void*)0x200000c5, "iocharset", 9));
  NONFAILING(*(uint8_t*)0x200000ce = 0x3d);
  NONFAILING(memcpy((void*)0x200000cf, "maccenteuro", 11));
  NONFAILING(*(uint8_t*)0x200000da = 0x2c);
  NONFAILING(memcpy((void*)0x200000db, "codepage", 8));
  NONFAILING(*(uint8_t*)0x200000e3 = 0x3d);
  NONFAILING(memcpy((void*)0x200000e4, "iso8859-6", 9));
  NONFAILING(*(uint8_t*)0x200000ed = 0x2c);
  NONFAILING(memcpy((void*)0x200000ee, "creator", 7));
  NONFAILING(*(uint8_t*)0x200000f5 = 0x3d);
  NONFAILING(memcpy((void*)0x200000f6, "\x4d\xdd\x78\xf5", 4));
  NONFAILING(*(uint8_t*)0x200000fa = 0x2c);
  NONFAILING(*(uint8_t*)0x200000fb = 0);
  NONFAILING(memcpy(
      (void*)0x20000ac0,
      "\x78\x9c\xec\xdd\x4f\x6b\x13\x4f\x1c\xc7\xf1\xcf\x6c\xd2\x26\xfd\xb5\xf4"
      "\xb7\xda\x8a\xe0\x41\xa4\x1a\xd0\x8b\x68\xbd\x88\x97\x88\xe4\x41\x78\x12"
      "\xb5\x49\xa1\xb8\x54\xd4\x8a\x7f\x4e\x55\x3c\x89\xd8\xbb\x77\x9f\x82\x8f"
      "\x41\xbc\x28\x3e\x01\x3d\x79\x12\xcf\xf5\x20\x2b\x33\x3b\xf9\xb3\x49\x36"
      "\x49\xa5\x9b\x6d\xf5\xfd\x02\xcb\x66\x67\x66\xe7\x3b\x9d\x9d\x9d\x99\x80"
      "\x5d\x01\xf8\x67\x5d\x6b\x7c\x79\x7b\xe9\x9b\xfd\x67\xa4\x92\x4a\xd2\xcb"
      "\x2b\x52\x20\xa9\x2a\x95\x25\x1d\xd3\xf1\xea\xc3\xcd\xad\x8d\xad\xa8\xd5"
      "\x1c\x75\xa1\x92\x4e\x56\x92\x52\x46\x49\x49\x33\x90\x67\x6d\xb3\x35\xac"
      "\x68\x55\xbe\x84\x17\xda\x4f\x65\x2d\xf4\x9e\x43\x3e\xe2\x38\xbe\xfa\xb5"
      "\xe8\x20\x50\x38\x37\xfa\xe3\x52\xfa\xe4\x29\xf7\x24\xa8\xf8\xd1\xe9\x12"
      "\xab\x05\xc5\x97\xe5\xd9\xde\x8b\xfc\x98\x93\xb4\x9d\x47\x30\x87\x88\xd9"
      "\xd5\xae\x1e\x6b\xb1\xe8\x38\x00\x00\xc5\x32\xc9\xfc\x1e\xf8\x79\x7e\xc1"
      "\xaf\xdf\x83\x40\xaa\xf9\x69\xdf\xad\xc6\x0f\xda\xfc\xff\xa7\x76\x8b\x0e"
      "\x20\x77\xf1\xc8\xd4\x9e\xf9\xdf\xf5\x6b\x6c\x6c\xbf\xff\xef\x92\xba\xfb"
      "\x3d\xb7\x85\xb3\xe9\x41\x7b\x97\x38\x49\xcd\x33\x7d\x9f\x67\x95\xdc\x59"
      "\xa9\xd5\xa5\x19\xb7\xab\x74\xb1\x04\x73\xeb\x1b\x51\xeb\xfc\xda\xdd\xa8"
      "\x19\xe8\xb9\xea\x5e\x4f\xb6\x65\xf7\xb3\x99\xdc\xba\x6d\x63\xa2\x5d\x19"
      "\xb2\x37\x1d\xa1\x73\xb5\xb9\xcc\x2c\x66\xf8\x8a\x72\xde\xb5\x61\xc6\xb6"
      "\x61\x35\x89\xff\x91\xa4\x54\xfc\x4b\x23\x6b\xcc\x81\xf9\x60\x3e\x99\x1b"
      "\x26\xd4\x1b\x35\x3b\xeb\xbf\x72\x6c\x6c\x37\xb9\x9e\x0a\xfb\x7a\x2a\x89"
      "\xff\x42\xf6\x15\x5d\x2b\x43\x9b\x4b\xfe\xb1\x51\xaf\xd7\x83\x54\x96\x23"
      "\xae\x92\x13\xbe\x06\x6f\x4c\x2b\xab\x2a\x65\xd5\x38\xeb\xaf\x99\xfa\x82"
      "\x20\x1c\x17\xa7\x2b\x75\xb4\xaf\x54\xd2\xba\x8b\x63\x4a\x2d\x0d\x2d\xb5"
      "\xda\xfe\x94\x51\x6a\x39\x55\xca\xb6\x66\x7d\x23\x7a\x9f\x5d\xd5\x54\x98"
      "\xd7\xe6\xba\x59\xd1\x77\xbd\x53\xa3\x67\xfd\x1f\xd8\xf8\x6a\x1a\x39\x32"
      "\xbb\xa3\xc6\xd4\x92\xa9\xc0\xfd\xc6\xed\xe8\x4c\xf7\x6c\x8f\x72\xcd\xa7"
      "\xf4\xcd\x1c\x83\xc3\xa5\xf3\x5b\xac\x64\x85\xfe\x73\xf4\x33\x0d\x7b\xf0"
      "\x4a\xb7\x75\x59\x8b\x0f\x9e\x3c\xbd\x53\x8a\xa2\xd6\x7d\x7b\x70\x2b\xb2"
      "\xb7\xab\x3b\xe8\x9c\xb9\xb7\xe0\x0f\xa2\xd6\xcc\x0b\xa9\x37\xe9\xa0\x1c"
      "\x68\xbb\x7b\xa6\xa2\xd8\x19\xc8\xdc\x9e\x94\xa6\x19\xd8\xb9\x7d\xbd\xa0"
      "\x7d\x7e\x8c\xcd\x6c\x47\x59\xee\xed\xb2\xcf\x81\x03\xd0\xef\xc5\x1d\x34"
      "\x3e\xe6\x78\x23\xfd\x8a\xe3\x78\x8a\xcd\xd9\xf1\x03\xa3\x3f\xa9\xc0\x67"
      "\x13\xa6\xa6\xdb\xe9\x45\x47\x82\x82\xd8\x75\x97\x49\xf6\x7f\xdd\xfd\x4a"
      "\x39\x59\xec\xd9\x1f\xe1\xd0\x75\xfa\x84\x5f\x04\xf8\x2b\xc6\x76\x8d\xdd"
      "\xd9\xc1\x75\xcb\xc6\xc9\x8a\x5c\xd2\x7f\x7b\xda\xc1\xcd\x67\xef\xe0\x06"
      "\xf7\x5c\x03\x7b\x46\xb7\xe7\x3a\x7d\x56\x3a\x33\x79\x8d\xa1\x8f\xf3\x2f"
      "\x61\x1a\xfa\xac\x9b\x7c\xff\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x70\xd8\x4c\xe3\xff\x4b\x14\xdd\x46\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0e\xbb\xce\xfb\x7f\xd5"
      "\x7e\xff\xaf\x26\x7b\xff\x6f\xff\xab\x58\x4a\xc9\x9f\x04\xdf\x97\xf7\xff"
      "\xee\x6c\x8a\xf7\xff\x02\xf9\xfb\x1d\x00\x00\xff\xff\xf5\xd6\x79\x77",
      737));
  NONFAILING(syz_mount_image(
      /*fs=*/0x20000000, /*dir=*/0x20000280,
      /*flags=MS_LAZYTIME|MS_STRICTATIME|MS_NODIRATIME|MS_MANDLOCK|MS_DIRSYNC*/
      0x30008c0, /*opts=*/0x20000080, /*chdir=*/0x11, /*size=*/0x2e1,
      /*img=*/0x20000ac0));
  NONFAILING(memcpy((void*)0x20000100, "./file0\000", 8));
  syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x20000100ul, /*mode=*/0ul);
  NONFAILING(memcpy((void*)0x200000c0, "./file2\000", 8));
  syscall(__NR_chdir, /*dir=*/0x200000c0ul);
  NONFAILING(memcpy((void*)0x20000580, "./file1\000", 8));
  NONFAILING(syz_mount_image(/*fs=*/0, /*dir=*/0x20000580, /*flags=*/0,
                             /*opts=*/0, /*chdir=*/0, /*size=*/0, /*img=*/0));
  NONFAILING(memcpy((void*)0x200001c0, "./bus\000", 6));
  syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x200001c0ul, /*mode=*/0ul);
  NONFAILING(
      memcpy((void*)0x20000000, "blkio.bfq.io_queued_recursive\000", 30));
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000000ul,
                /*flags=*/0x275aul, /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  syscall(__NR_ftruncate, /*fd=*/r[0], /*len=*/0xc17aul);
  syscall(__NR_ftruncate, /*fd=*/-1, /*len=*/0xc17aul);
  NONFAILING(memcpy((void*)0x20000140, "cpuacct.usage_percpu\000", 21));
  syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000140ul,
          /*flags=*/0x275aul, /*mode=*/0ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  install_segv_handler();
  loop();
  return 0;
}