// https://syzkaller.appspot.com/bug?id=d8ed1f6e53c6b849f4a5fecd62617cee96df6faa
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.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/futex.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 void thread_start(void* (*fn)(void*), void* arg)
{
  pthread_t th;
  pthread_attr_t attr;
  pthread_attr_init(&attr);
  pthread_attr_setstacksize(&attr, 128 << 10);
  int i = 0;
  for (; i < 100; i++) {
    if (pthread_create(&th, &attr, fn, arg) == 0) {
      pthread_attr_destroy(&attr);
      return;
    }
    if (errno == EAGAIN) {
      usleep(50);
      continue;
    }
    break;
  }
  exit(1);
}

typedef struct {
  int state;
} event_t;

static void event_init(event_t* ev)
{
  ev->state = 0;
}

static void event_reset(event_t* ev)
{
  ev->state = 0;
}

static void event_set(event_t* ev)
{
  if (ev->state)
    exit(1);
  __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE);
  syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000);
}

static void event_wait(event_t* ev)
{
  while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0);
}

static int event_isset(event_t* ev)
{
  return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE);
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
  uint64_t start = current_time_ms();
  uint64_t now = start;
  for (;;) {
    uint64_t remain = timeout - (now - start);
    struct timespec ts;
    ts.tv_sec = remain / 1000;
    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts);
    if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
      return 1;
    now = current_time_ms();
    if (now - start > timeout)
      return 0;
  }
}

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, 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 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, loopfd = -1, 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) {
    memset(loopname, 0, sizeof(loopname));
    snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
    if (setup_loop_device(data, size, loopname, &loopfd) == -1)
      return -1;
    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) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
  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 setup_sysctl()
{
  char mypid[32];
  snprintf(mypid, sizeof(mypid), "%d", getpid());
  struct {
    const char* name;
    const char* data;
  } files[] = {
      {"/sys/kernel/debug/x86/nmi_longest_ns", "10000000000"},
      {"/proc/sys/kernel/hung_task_check_interval_secs", "20"},
      {"/proc/sys/net/core/bpf_jit_kallsyms", "1"},
      {"/proc/sys/net/core/bpf_jit_harden", "0"},
      {"/proc/sys/kernel/kptr_restrict", "0"},
      {"/proc/sys/kernel/softlockup_all_cpu_backtrace", "1"},
      {"/proc/sys/fs/mount-max", "100"},
      {"/proc/sys/vm/oom_dump_tasks", "0"},
      {"/proc/sys/debug/exception-trace", "0"},
      {"/proc/sys/kernel/printk", "7 4 1 3"},
      {"/proc/sys/kernel/keys/gc_delay", "1"},
      {"/proc/sys/vm/oom_kill_allocating_task", "1"},
      {"/proc/sys/kernel/ctrl-alt-del", "0"},
      {"/proc/sys/kernel/cad_pid", mypid},
  };
  for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
    if (!write_file(files[i].name, files[i].data))
      printf("write to %s failed: %s\n", files[i].name, strerror(errno));
  }
}

struct thread_t {
  int created, call;
  event_t ready, done;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    event_wait(&th->ready);
    event_reset(&th->ready);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    event_set(&th->done);
  }
  return 0;
}

static void execute_one(void)
{
  int i, call, thread;
  for (call = 0; call < 6; call++) {
    for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
         thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        event_init(&th->ready);
        event_init(&th->done);
        event_set(&th->done);
        thread_start(thr, th);
      }
      if (!event_isset(&th->done))
        continue;
      event_reset(&th->done);
      th->call = call;
      __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
      event_set(&th->ready);
      event_timedwait(&th->done, 50 + (call == 0 ? 4000 : 0));
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
}

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

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    memcpy((void*)0x200000c0, "nilfs2\000", 7);
    memcpy((void*)0x200001c0, "./file0\000", 8);
    memcpy(
        (void*)0x20000100,
        "\x00\xaf\x08\x9b\x0a\x32\xe3\x1a\xfa\xa5\xa6\x74\x33\xb5\x10\x7c\x2f"
        "\x3f\xdb\xb7\x25\x34\x4e\x0a\xfc\x2e\xad\x9e\xf0\x81\xca\xf0\x16\x71"
        "\x74\x61\xdd\xd9\x67\xba\xd2\x65\x87\x2f\xfe\x18\x54\x07\xd7\x8e\x17"
        "\xbe\x2a\x7a\x32\x7f\x70\x2e\xc4\x18\xe4\xca\x1f\x79\x00\x00\x00\x00"
        "\xff\x08\x02\xde\x04\xc0\x61\x1b\xc5\x1c\xb5\x1a\x67\xa3\xaf\x83\x07"
        "\x87\x63\x64\xa3\x5a\xef\x43\x04\x0e\x9f\xa1\x13\x18\x50\xd7\x57\x8c"
        "\x0a\x9f\xe8\xe0\x8b\xc2\xe0\x45\x7f\x2f\x4a\x6d\x01\x8b\xdf\x34\x6c",
        119);
    memcpy(
        (void*)0x20000200,
        "\x78\x9c\xec\xdd\x4d\x8c\x5b\x47\x1d\x00\xf0\xb1\x77\xbd\xc9\x26\x2d"
        "\x71\x4a\x42\x97\x34\xb4\x09\x85\xb6\x7c\x74\xb7\xd9\x2c\xe1\x23\x82"
        "\xa6\x6a\x2e\x44\x4d\xc5\xad\x52\xc5\x25\x4a\xd3\x12\x91\x06\x44\x2a"
        "\x41\xab\x1e\x92\x9c\xb8\xd1\xaa\x0a\x57\x3e\xc4\xa9\x97\x0a\x10\x12"
        "\xbd\xa0\xa8\x27\x2e\x95\x68\x24\x2e\x3d\x15\x0e\x1c\x88\x82\x54\x89"
        "\x03\x14\x92\x45\xf1\xce\x78\xbd\xff\xd8\x3c\x7b\x37\xbb\x8e\xd7\xbf"
        "\x9f\x34\x3b\x9e\x37\x63\xcf\x3c\xef\xf3\xf3\xf3\x7b\x6f\x66\x12\x30"
        "\xb6\xea\xad\xbf\x0b\x0b\x33\xb5\x94\x2e\xbd\xfd\xc6\xd1\xbf\x3f\xf4"
        "\xb7\xe9\x9b\x4b\x1e\x6f\x97\x68\xb6\xfe\x4e\x76\xa4\x1a\x29\xa5\x5a"
        "\x4e\x4f\x86\xd7\xfb\x60\x62\x29\xbe\xfe\xe1\xab\x27\xbb\xc5\xb5\x34"
        "\xdf\xfa\x5b\xd2\xe9\xe9\x6b\xed\xe7\x6e\x4f\x29\x9d\x4f\xfb\xd2\xe5"
        "\xd4\x4c\x7b\x2e\x5d\x79\xfd\xdd\xf9\xa7\x8e\x5f\x38\x76\x71\xff\x7b"
        "\x6f\x1e\xbe\xba\x3e\x6b\x0f\x00\x00\xe3\xe5\x5b\x97\x0f\x2f\xec\xfe"
        "\xcb\x9f\xee\xdb\xf9\xd1\x5b\xf7\x1f\x49\x5b\xda\xcb\xcb\xf1\x79\x33"
        "\xa7\xef\xca\xc7\xfd\x47\xf2\x81\x7f\x39\xfe\xaf\xa7\x95\xe9\x5a\x47"
        "\xe8\x34\x15\xca\x4d\xe6\x50\x0f\xe5\x26\xba\x94\xeb\xac\xa7\x11\xca"
        "\x4d\xf6\xa8\x7f\x2a\xbc\x6e\xa3\x47\xb9\x2d\x15\xf5\x4f\x74\x2c\xeb"
        "\xb6\xde\x30\xca\xca\x76\xdc\x4c\xb5\xfa\xec\x8a\x74\xbd\x3e\x3b\xbb"
        "\xf4\x9b\x3c\xb5\x7e\xd7\x4f\xd5\x66\xcf\x9e\x3e\xf3\xfc\xb9\x21\x35"
        "\x14\xb8\xed\xfe\xf9\x40\x4a\x69\x9f\x20\x0c\x16\x8e\xa4\xe1\xb7\x41"
        "\x58\x7b\x58\xdc\x31\xec\x3d\x10\xc0\x92\x78\xbd\xf0\x16\xe7\xe3\x99"
        "\x85\xb5\x69\xbf\xda\x64\x7f\xf5\x5f\x7b\xa2\xde\xfd\xf9\x7d\x8b\x67"
        "\x1c\x60\xd9\x46\x6f\xff\xea\x1f\xad\xfa\x7f\x75\x61\x7d\xeb\x67\xbc"
        "\x6c\xd6\xad\xa9\xac\x57\xf9\x1c\xdd\x95\xd3\xf1\x3a\x42\xbc\x7f\x69"
        "\xd0\xcf\x7f\x79\xbd\x78\x3d\xa2\xd1\x67\x3b\x7b\x5d\x47\x18\x95\xeb"
        "\x0b\xbd\xda\x39\xb1\xc1\xed\x58\xad\x5e\xed\x8f\xdb\xc5\x66\xf5\xf5"
        "\x1c\x97\xf7\xe1\x1b\x21\xbf\xf3\xf3\x13\xff\xa7\xa3\xf2\x3f\x06\xba"
        "\xfb\x97\xf3\xff\x82\x30\xb6\x61\x71\xd8\x3b\x20\xe0\x8e\x15\xef\x9b"
        "\x5b\xcc\x4a\x7e\xbc\xaf\x2f\xe6\x6f\xa9\xc8\xdf\x5a\x91\x3f\x5d\x91"
        "\xbf\xad\x22\x7f\x7b\x45\x3e\x8c\xb3\xdf\xbe\xf4\x93\xf4\x5a\x6d\xf9"
        "\x77\x7e\xfc\x4d\x3f\xe8\xf9\xb0\x72\x9e\xed\xee\x1c\x7f\x6c\xc0\xf6"
        "\xc4\xf3\x91\x83\xd6\x1f\xef\xfb\x1d\xd4\x5a\xeb\x77\x75\x8f\x51\xf2"
        "\xfb\x13\xcf\x9c\xfa\xca\x73\xcf\x5e\x59\xba\xff\xbf\xd6\xde\xfe\x6f"
        "\xe4\xed\x7d\x5f\x4e\x37\xf3\x67\xeb\x72\x2e\x50\xce\x17\xc6\xf3\xea"
        "\xed\x7b\xff\x9b\x2b\xeb\xa9\xf7\x28\x77\x4f\x68\xcf\xdd\x5d\xca\xb7"
        "\x1e\xef\x5a\x59\xae\xb6\x6b\xf9\x75\x52\xc7\x7e\xe6\x96\x76\xcc\xac"
        "\x7c\xde\x8e\x5e\xe5\xf6\xae\x2c\xd7\x0c\xe5\xa6\x73\xd8\x1a\xda\x1b"
        "\x8f\x4f\xb6\x85\xe7\x95\xe3\x8f\xb2\x5f\x2d\xef\xd7\x64\x58\xdf\x46"
        "\x58\x8f\xa9\xd0\x8e\xb2\x5f\xd9\x99\xe3\xd8\x0e\x58\x8d\xb2\x3d\xf6"
        "\xba\xff\xbf\x6c\x9f\x33\xa9\x51\x7b\xfe\xf4\x99\x53\x8f\xe5\x74\xd9"
        "\x4e\xff\x38\xd1\xd8\x72\x73\xf9\x81\x0d\x6e\x37\xb0\x76\xfd\xf6\xff"
        "\x99\x49\x2b\xfa\xff\xb4\x0f\x73\x67\x52\xa3\xde\xb9\x5f\xd8\xb1\xbc"
        "\xbc\xd6\xb9\x5f\x68\x86\xe5\xf3\x3d\x96\x1f\xcc\xe9\xf2\x3d\xf7\x9d"
        "\x89\xe9\xd6\xf2\xd9\x93\xdf\x3b\xf3\xdc\xed\x5e\x79\x18\x73\xe7\x5e"
        "\x7e\xe5\xbb\x27\xce\x9c\x39\xf5\x03\x0f\x3c\xf0\xc0\x83\xf6\x83\x61"
        "\xef\x99\x80\xf5\x36\xf7\xd2\x8b\xdf\x9f\x3b\xf7\xf2\x2b\x8f\x9e\x7e"
        "\xf1\xc4\x0b\xa7\x5e\x38\x75\xf6\xe0\xa1\x43\x07\xe7\xe7\x0f\x7d\xf5"
        "\xe0\xc2\x5c\xeb\xb8\x7e\xae\xf3\xe8\x1e\xd8\x4c\x96\xbf\xf4\x87\xdd"
        "\x12\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa0\x5f\x3f\x3c\x76\xf4\xca"
        "\x9f\xdf\xf9\xf2\xfb\x4b\xfd\xff\x97\xfb\xff\x95\xfe\xff\xe5\xce\xdf"
        "\xd2\xff\xff\xc7\xa1\xff\x7f\xec\x27\x5f\xfa\xc1\x97\x7e\x80\x3b\xbb"
        "\xe4\xb7\xca\x84\x01\x56\xa7\x42\xb9\x46\x8f\x1e\xee\xbb\x42\x3d\xbb"
        "\xc3\xf3\x3e\x91\xe3\xf6\x3c\x7e\xb9\xff\x7f\xa9\x2e\x8e\xeb\x5a\xda"
        "\x73\x6f\x58\x1e\xc7\xef\x2d\xe5\xc2\x70\x02\xb7\x8c\x97\x32\x15\xc6"
        "\x20\x89\xf3\x05\x7e\x3a\xc7\x17\x73\xfc\xcb\xb8\x82\xb0\x91\x6a\xd3"
        "\xdd\x17\xe7\xb8\x6a\x7c\xeb\xb2\xad\x97\x0e\xc1\xc6\xa5\x18\x4d\xe5"
        "\xff\x56\xb6\x86\x32\x8e\x49\xe9\xff\x5d\x35\xae\xd3\xce\x75\x6e\x1f"
        "\xeb\x63\x23\xba\x13\x0e\x7b\x1d\x81\xee\xfe\x71\x9b\xc6\xff\x6e\x1d"
        "\x27\xdc\x01\xe3\x19\x0b\xc3\x0a\xd3\x77\x40\x1b\x84\x41\xc3\xe2\xa2"
        "\x59\x3c\x80\x3b\xc3\xb0\xe7\xff\x2c\xe7\x3d\x4b\x7c\xf6\x0f\xdf\xdc"
        "\x7a\x33\x94\x62\xd7\x9e\x58\xb9\xbf\x8c\xe3\x97\xc2\x5a\xdc\xe9\xf3"
        "\x4f\xaa\x7f\x73\xcd\xff\xd9\x9e\xff\xae\xef\xfd\x5f\x98\x31\xaf\xb9"
        "\xba\x7a\xff\xfd\xb3\xab\xef\x77\x54\x9b\xf6\xf4\x5b\x7f\x5c\xff\x32"
        "\x0e\xf4\xae\xc1\xea\xff\x28\xd7\x5f\xd6\xe6\xe1\xd4\x5f\xfd\x8b\xbf"
        "\x08\xf5\xc7\x0b\x42\x7d\xfa\x4f\xa8\x7f\x5b\x9f\xf5\xdf\xb2\xfe\x7b"
        "\x57\x57\xff\x7f\x73\xfd\xe5\x6d\x7b\xe4\xc1\x7e\xeb\x5f\x6a\x71\xad"
        "\xbe\xb2\x1d\xf1\xbc\x71\xb9\xfe\x17\xcf\x1b\x17\xd7\xc3\xfa\x97\xb1"
        "\x3d\x07\x5e\xff\x55\x4e\xd4\x78\x23\xd7\x0f\xe3\x6c\x54\xe6\x99\x1d"
        "\xd4\xa8\xcc\xff\xdb\x4b\xbc\x0f\xe3\x4b\x39\x5d\x76\x84\xe5\x3e\x87"
        "\x38\xdf\xc9\xa0\xed\xff\x78\x8e\xcb\xf7\xc0\xee\xf0\xfa\xb5\x8a\xef"
        "\x37\xf3\xff\x8e\xb6\xaf\xe5\xb8\xea\xf3\x50\xe6\xff\x2d\xdb\x63\xb3"
        "\x4b\xba\xde\x91\x6e\x74\x79\x6f\x37\xeb\xbe\x06\x46\xd5\x07\xe6\xff"
        "\x15\x84\xb1\x0d\x8b\x8b\x8b\xeb\x7b\x42\xab\xc2\x50\x2b\x67\xe8\xef"
        "\xff\xb0\x7f\x27\x0c\xbb\xfe\xc1\xde\xff\x8d\x6f\x6d\x9c\xff\x37\x1e"
        "\xc3\xc7\xf9\x7f\x63\x7e\x9c\xff\x37\xe6\xc7\xf9\x7f\x63\x7e\x9c\x5f"
        "\x2f\xe6\xc7\xf9\x7f\xe3\xfb\x19\xe7\xff\x8d\xf9\xf7\x86\xd7\x8d\xf3"
        "\x03\xcf\x54\xe4\x7f\xb2\x22\x7f\x4f\x45\xfe\x7d\x15\xf9\x7b\x2b\xf2"
        "\x3f\x55\x91\xbf\x7f\xcb\xff\xcf\xbf\xbf\xe2\xf9\x0f\x54\xe4\xdf\x53"
        "\x91\xff\x60\x45\xfe\x67\x2a\xf2\x3f\x5b\x91\xff\x50\x45\xfe\x23\x15"
        "\xf9\x9f\xab\xc8\xdf\xec\x4a\x7f\x94\x71\x5d\x7f\x18\x67\xb1\x7f\x9e"
        "\xcf\x3f\x8c\x8f\x72\xfd\xa7\xd7\xe7\x7f\x57\x45\x3e\x30\xba\x7e\xfa"
        "\xd6\x81\x27\x9f\xfd\xcd\xb7\x9b\x4b\xfd\xff\xa7\xda\x67\x18\xca\x75"
        "\xbc\x23\x39\xdd\xc8\xbf\x9d\x7f\x94\xd3\xf1\xba\x77\xea\x48\xdf\xcc"
        "\x7b\x27\xa7\xff\x1a\xf2\x87\x7d\xbe\x09\x58\x16\xc7\xcf\x88\xdf\xef"
        "\x0f\x57\xe4\x03\xa3\xab\xdc\xe7\xe5\xf3\x0d\x63\xa8\xd6\x7d\xc4\x9e"
        "\x7e\xc7\xad\xea\x75\x9c\xcf\x68\xf9\x7c\x8e\xbf\x90\xe3\x2f\xe6\xf8"
        "\xd1\x1c\xcf\xe6\x78\x2e\xc7\x07\x72\x3c\xbf\x41\xed\x63\x7d\x3c\xf9"
        "\xeb\xdf\x1d\x7e\xad\xb6\xfc\x7b\x7f\x47\xc8\xef\xf7\x7e\xf2\xd8\x1f"
        "\x28\x8e\x13\x75\xb0\xcf\xf6\xc4\xf3\x03\x83\xde\xcf\x1e\xc7\xf1\x1b"
        "\xd4\x5a\xeb\x5f\x65\x77\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\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\xa1\xa9"
        "\xb7\xfe\x2e\x2c\xcc\xd4\x52\xba\xf4\xf6\x1b\x47\x9f\x39\x7e\x7a\xee"
        "\xe6\x92\xc7\xdb\x25\x9a\xad\xbf\x93\x1d\xa9\x46\xfb\x79\x29\x3d\x96"
        "\xe3\x89\x1c\xff\x3c\x3f\xb8\xfe\xe1\xab\x27\x3b\xe3\x1b\x39\xae\xa5"
        "\xf9\x54\x4b\xb5\xf6\xf2\xf4\xf4\xb5\x76\x4d\xdb\x53\x4a\xe7\xd3\xbe"
        "\x74\x39\x35\xd3\x9e\x4b\x57\x5e\x7f\x77\xfe\xa9\xe3\x17\x8e\x5d\xdc"
        "\xff\xde\x9b\x87\xaf\xae\xdf\x3b\x00\x00\x00\x00\x9b\xdf\xff\x02\x00"
        "\x00\xff\xff\x9e\xa9\x0d\x94",
        2591);
    syz_mount_image(0x200000c0, 0x200001c0, 0x808, 0x20000100, 1, 0xa1f,
                    0x20000200);
    break;
  case 1:
    memcpy((void*)0x20000000, ".pending_reads\000", 15);
    res = syscall(__NR_openat, 0xffffff9c, 0x20000000ul, 0x1c1041ul, 0ul);
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    syscall(__NR_socket, 0x10ul, 3ul, 0);
    break;
  case 3:
    memcpy((void*)0x20000040, "blkio.bfq.io_service_bytes_recursive\000", 37);
    res = syscall(__NR_openat, 0xffffff9c, 0x20000040ul, 0x275aul, 0ul);
    if (res != -1)
      r[1] = res;
    break;
  case 4:
    syscall(__NR_write, r[1], 0x20000040ul, 0x208e24bul);
    break;
  case 5:
    memcpy((void*)0x20000200, "\x01\x80\x03\x00\x00\x00\x00\x00", 8);
    syscall(__NR_ioctl, r[0], 0x40086e8b, 0x20000200ul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  setup_sysctl();
  loop();
  return 0;
}