// https://syzkaller.appspot.com/bug?id=2bb24534fce83db3302050b9bd953fdd7ed11a75
// 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, 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 setup_sysctl()
{
  int cad_pid = fork();
  if (cad_pid < 0)
    exit(1);
  if (cad_pid == 0) {
    for (;;)
      sleep(100);
  }
  char tmppid[32];
  snprintf(tmppid, sizeof(tmppid), "%d", cad_pid);
  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", tmppid},
  };
  for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
    if (!write_file(files[i].name, files[i].data)) {
    }
  }
  kill(cad_pid, SIGKILL);
  while (waitpid(cad_pid, NULL, 0) != cad_pid)
    ;
}

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)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  int i, call, thread;
  for (call = 0; call < 14; 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 == 9 ? 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 (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    memcpy((void*)0x200000000100, "/dev/vhost-vsock\000", 17);
    res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                  /*file=*/0x200000000100ul, /*flags=*/2, /*mode=*/0);
    if (res != -1)
      r[0] = res;
    break;
  case 1:
    syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xaf01, /*arg=*/0ul);
    break;
  case 2:
    *(uint32_t*)0x200000000300 = 1;
    *(uint32_t*)0x200000000304 = 0;
    *(uint64_t*)0x200000000308 = 0;
    *(uint64_t*)0x200000000310 = 0x200000000480;
    *(uint64_t*)0x200000000318 = 0;
    *(uint64_t*)0x200000000320 = 0;
    syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4028af11,
            /*arg=*/0x200000000300ul);
    break;
  case 3:
    *(uint32_t*)0x200000003380 = 0;
    *(uint32_t*)0x200000003384 = 0;
    syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4008af03,
            /*arg=*/0x200000003380ul);
    break;
  case 4:
    res = syscall(__NR_eventfd2, /*initval=*/0x76, /*flags=EFD_SEMAPHORE*/ 1ul);
    if (res != -1)
      r[1] = res;
    break;
  case 5:
    *(uint32_t*)0x2000000001c0 = 0;
    *(uint32_t*)0x2000000001c4 = r[1];
    syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4008af22,
            /*arg=*/0x2000000001c0ul);
    break;
  case 6:
    *(uint32_t*)0x200000000240 = 0;
    *(uint32_t*)0x200000000244 = 0;
    *(uint64_t*)0x200000000248 = 0;
    *(uint64_t*)0x200000000250 = 0x200000000600;
    *(uint64_t*)0x200000000258 = 0;
    *(uint64_t*)0x200000000260 = 0x1000;
    syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4028af11,
            /*arg=*/0x200000000240ul);
    break;
  case 7:
    *(uint32_t*)0x200000000000 = 0;
    *(uint32_t*)0x200000000004 = r[1];
    syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4008af20,
            /*arg=*/0x200000000000ul);
    break;
  case 8:
    *(uint32_t*)0x200000000140 = 1;
    syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4004af61,
            /*arg=*/0x200000000140ul);
    break;
  case 9:
    memcpy((void*)0x200000000080, "ext4\000", 5);
    memcpy((void*)0x2000000000c0, "./file0\000", 8);
    memcpy((void*)0x2000000003c0, "dioread_lock", 12);
    *(uint8_t*)0x2000000003cc = 0x2c;
    memcpy((void*)0x2000000003cd, "auto_da_alloc", 13);
    *(uint8_t*)0x2000000003da = 0x2c;
    memcpy((void*)0x2000000003db, "nojournal_checksum", 18);
    *(uint8_t*)0x2000000003ed = 0x2c;
    memcpy((void*)0x2000000003ee, "grpquota", 8);
    *(uint8_t*)0x2000000003f6 = 0x2c;
    memcpy((void*)0x2000000003f7, "auto_da_alloc", 13);
    *(uint8_t*)0x200000000404 = 0x2c;
    memcpy((void*)0x200000000405, "noquota", 7);
    *(uint8_t*)0x20000000040c = 0x2c;
    memcpy((void*)0x20000000040d, "data_err=abort", 14);
    *(uint8_t*)0x20000000041b = 0x2c;
    memcpy((void*)0x20000000041c, "grpid", 5);
    *(uint8_t*)0x200000000421 = 0x2c;
    memcpy((void*)0x200000000422, "grpjquota=", 10);
    *(uint8_t*)0x20000000042c = 0x2c;
    memcpy((void*)0x20000000042d, "nouid32", 7);
    *(uint8_t*)0x200000000434 = 0x2c;
    memcpy((void*)0x200000000435, "grpid", 5);
    *(uint8_t*)0x20000000043a = 0x2c;
    *(uint8_t*)0x20000000043b = 0;
    memcpy(
        (void*)0x200000000c80,
        "\x78\x9c\xec\xdd\xcf\x6b\x1c\xd7\x1d\x00\xf0\xef\xac\x56\x3f\xed\x56"
        "\x2a\x14\x5a\xf7\x24\x28\xb4\x06\xe3\x55\xe5\xaa\x76\x0b\x85\xaa\xf4"
        "\x50\x0a\x35\x18\xda\x53\x0f\xb5\xc5\x6a\x2d\x5c\xad\xb4\x46\xbb\x32"
        "\x96\x10\xad\x4d\x29\xf4\x52\x68\x42\x6e\xc9\xc5\xe7\xfc\xbc\x84\x5c"
        "\xf3\xe3\x90\x4b\x72\xc9\x5f\x11\x6c\x9c\x44\x16\x71\xc8\x21\x28\xcc"
        "\xfe\x90\x56\xd2\xae\xbc\xb2\xb4\x2b\x39\xfe\x7c\x60\xb4\xef\xcd\xbc"
        "\xd9\xf7\xbe\xf3\x66\xde\x8c\x34\xa3\xdd\x00\x9e\x5b\xe3\xe9\x8f\x4c"
        "\xc4\x99\x88\xf8\x7f\x12\x31\x5a\x9f\x9f\x44\x44\x7f\x35\x95\x8d\x98"
        "\xae\x95\x7b\xbc\xbe\x96\x4f\xa7\x24\x36\x37\xff\xf2\x79\x52\x2d\xb3"
        "\xb1\xbe\x96\x8f\xa6\x75\x52\xa7\xea\x99\x1f\x47\xc4\xfb\xff\x89\x38"
        "\x97\xd9\x5b\x6f\x79\x65\x75\x7e\xa6\x58\x2c\x2c\xd5\xf3\x13\x95\x85"
        "\x9b\x13\xe5\x95\xd5\xf3\x37\x16\x66\xe6\x0a\x73\x85\xc5\x8b\x93\x53"
        "\x53\x17\x2e\xfd\xea\xd2\xc5\xa3\x8b\xf5\xcb\x8f\x57\x4f\x3f\x78\xe1"
        "\x8f\x3f\x7f\x63\xfa\xeb\x7f\xff\xe8\xcd\xff\x7d\x90\xc4\x74\x9c\xae"
        "\x2f\x6b\x8e\xe3\xa8\x8c\xc7\x78\x7d\x9b\xf4\xa7\x9b\x70\x87\x3f\x1c"
        "\x75\x65\xc7\xe6\xed\x7f\x76\x50\xa8\x69\x0f\xc8\x76\xb3\x31\x1c\x50"
        "\xda\x31\x7d\xf5\x5e\x39\x13\xa3\xd1\xb7\x5f\xff\x0c\xf7\xb2\x65\x00"
        "\x40\xb7\xfc\x2b\x22\x36\xdb\xe9\x6b\xbb\x04\x00\x78\xa6\x25\xb5\xf3"
        "\xff\xef\x8e\xbb\x1d\x00\x40\xaf\x34\xfe\x0e\xb0\x91\x8d\x88\xf5\xb5"
        "\x7c\x37\xee\x83\x9d\x64\x0f\x7f\x1f\x11\x43\xb5\xfb\x7f\x8d\xfb\x9b"
        "\xb5\x25\xd9\xfa\x3d\xbb\xa1\xea\x7d\xd0\x91\x8d\x64\xc7\x9d\x91\x24"
        "\x22\xc6\x8e\xa0\xfe\xf1\x88\x78\xe5\x9d\xbf\xbf\x96\x4e\xd1\xa5\xfb"
        "\x90\x00\xad\xdc\xb9\x1b\x11\xd7\xc6\xc6\x37\xea\x63\xff\xf6\xf8\x93"
        "\xec\x79\x66\xe1\xa0\x7e\xd1\x7a\xf6\x5c\x73\x66\x7c\xd7\x42\xe3\x1f"
        "\xf4\xce\xbb\xe9\xf5\xcf\xaf\x6b\xc7\xdd\xce\xe3\x3f\xb3\x75\xfd\x13"
        "\x2d\xae\x7f\x06\x5b\x1c\xbb\x4f\xe3\xc9\xc7\x7f\xe6\xfe\x11\x54\xd3"
        "\x56\x7a\xfd\xf7\xdb\xa6\x67\xdb\x1e\x37\xc5\x5f\x37\xd6\x57\xcf\x7d"
        "\xaf\x7a\xcd\xd7\x9f\x5c\xbf\x51\x2c\xa4\x63\xdb\xf7\x23\xe2\x6c\xf4"
        "\x0f\xa6\xf9\xc9\x7d\xea\x38\xfb\xe8\x9b\x47\xed\x96\x35\x5f\xff\x7d"
        "\xf1\xe2\x3f\x5e\x4d\xeb\x4f\x5f\xb7\x4b\x64\xee\x67\x07\x77\xae\x33"
        "\x3b\x53\x99\x39\x4c\xcc\xcd\x1e\xde\x8d\xf8\x49\xb6\x55\xfc\xe9\xf8"
        "\x3f\x58\xed\xff\xa4\xcd\xf5\xef\x95\x0e\xeb\xf8\xd3\x6f\xfe\xfb\x72"
        "\xbb\x65\x69\xfc\x69\xbc\x8d\x69\x6f\xfc\xdd\xb5\x79\x2f\xe2\x67\x2d"
        "\xfb\x3f\xd9\x2a\x93\xec\xfb\x7c\xe2\x44\x75\x77\x98\x68\xec\x14\x2d"
        "\xbc\x35\x1d\x23\xed\xea\x1f\xcf\x6e\xf7\x7f\x3a\xa5\xf5\x37\x7e\x17"
        "\xe8\x85\xb4\xff\x47\xf6\x8f\x7f\x2c\x69\x7e\x5e\xb3\xdc\xf1\x5b\x6f"
        "\x3d\x2d\xf6\xd1\xbd\xd1\xf7\xda\x15\x6a\xde\xff\x5b\xc7\xdf\x7a\xff"
        "\x1f\x48\xfe\x5a\x4d\x0f\xd4\xe7\xdd\x9e\xa9\x54\x96\x26\x23\x06\x92"
        "\x3f\xef\x9d\x7f\x61\x7b\xdd\x46\xbe\x51\x3e\x8d\xff\xec\x4f\x5b\x1f"
        "\xff\x8d\xf1\xaf\xc5\xfe\xff\xb7\xf4\xfd\xaf\x75\xb8\x21\xb2\x0f\x3e"
        "\x7b\xfd\xe9\xe3\xef\xae\x34\xfe\xd9\x03\xf5\xff\x81\x13\x31\xf4\x78"
        "\xbe\xaf\x5d\xfd\x9d\xf5\xff\xd4\x8e\x75\x3a\x19\xff\x3a\x6d\xe0\xd3"
        "\x6e\x37\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x38\x88\x4c\x44\x9c\x8e\x24\x93\xdb\x4a\x67\x32\xb9"
        "\x5c\xed\x3b\xbc\x7f\x18\x23\x99\x62\xa9\x5c\x39\x77\xbd\xb4\xbc\x38"
        "\x1b\xd5\xef\xca\x1e\x8b\xfe\x4c\xe3\xa3\x2e\x47\x9b\x3e\x0f\x75\xb2"
        "\xfe\x79\xf8\x8d\xfc\x85\x5d\xf9\x5f\x46\xc4\x0f\x22\xe2\xa5\xc1\xe1"
        "\x6a\x3e\x97\x2f\x15\x67\x8f\x3b\x78\x00\x00\x00\x00\x00\x00\x00\x00"
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        "\x00\x00\x00\x00\x00\x00\xa8\x3b\xd5\xe6\xfb\xff\x53\x9f\x0e\xee\x2a"
        "\xdc\x77\x1c\x2d\x04\x00\xba\x62\xc8\x89\x1d\x00\x9e\x37\x49\x36\x7b"
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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\x80\x67\xc4\xb7\x01\x00\x00\xff\xff\x6c\x6f\x1c\x35",
        2003);
    syz_mount_image(
        /*fs=*/0x200000000080, /*dir=*/0x2000000000c0,
        /*flags=MS_LAZYTIME|MS_SYNCHRONOUS|MS_STRICTATIME|MS_NOATIME|MS_DIRSYNC*/
        0x3000490, /*opts=*/0x2000000003c0, /*chdir=*/0x45, /*size=*/0x7d3,
        /*img=*/0x200000000c80);
    break;
  case 10:
    memcpy((void*)0x200000000040, "hugetlb.2MB.usage_in_bytes\000", 27);
    res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000040ul,
                  /*flags=*/0x275a, /*mode=*/0);
    if (res != -1)
      r[2] = res;
    break;
  case 11:
    memcpy((void*)0x200000000200, "#! ", 3);
    memcpy((void*)0x200000000203, "./file1", 7);
    *(uint8_t*)0x20000000020a = 0xa;
    syscall(__NR_write, /*fd=*/r[2], /*data=*/0x200000000200ul, /*len=*/0xbul);
    break;
  case 12:
    syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0xb36000ul,
            /*prot=PROT_GROWSUP|PROT_SEM|PROT_WRITE|PROT_READ|0x800000*/
            0x280000bul,
            /*flags=MAP_STACK|MAP_POPULATE|MAP_FIXED|MAP_SHARED*/ 0x28011ul,
            /*fd=*/r[2], /*offset=*/0ul);
    break;
  case 13:
    *(uint32_t*)0x200000000280 = 2;
    *(uint32_t*)0x200000000284 = 0;
    *(uint64_t*)0x200000000288 = 0;
    *(uint32_t*)0x200000000290 = 0;
    *(uint32_t*)0x200000000294 = 0x20003;
    *(uint32_t*)0x200000000298 = 0x10020f5b;
    *(uint32_t*)0x20000000029c = 0;
    *(uint8_t*)0x2000000002a0 = 0;
    *(uint8_t*)0x2000000002a1 = 0;
    *(uint8_t*)0x2000000002a2 = 0;
    memset((void*)0x2000000002a3, 0, 4);
    *(uint8_t*)0x2000000002a7 = 0;
    *(uint8_t*)0x2000000002a8 = 0;
    *(uint8_t*)0x2000000002a9 = 0;
    *(uint8_t*)0x2000000002aa = 0;
    memset((void*)0x2000000002ab, 0, 4);
    *(uint8_t*)0x2000000002af = 0;
    *(uint8_t*)0x2000000002b0 = 0;
    *(uint8_t*)0x2000000002b1 = 0;
    *(uint8_t*)0x2000000002b2 = 0;
    memset((void*)0x2000000002b3, 0, 4);
    *(uint8_t*)0x2000000002b7 = 0;
    *(uint8_t*)0x2000000002b8 = 0;
    *(uint8_t*)0x2000000002b9 = 0x35;
    *(uint8_t*)0x2000000002ba = 0;
    memset((void*)0x2000000002bb, 0, 4);
    *(uint8_t*)0x2000000002bf = 0;
    *(uint8_t*)0x2000000002c0 = 0x20;
    *(uint8_t*)0x2000000002c1 = 0;
    *(uint8_t*)0x2000000002c2 = 0;
    memset((void*)0x2000000002c3, 0, 4);
    *(uint8_t*)0x2000000002c7 = 0;
    *(uint8_t*)0x2000000002c8 = 0;
    *(uint8_t*)0x2000000002c9 = 0;
    *(uint8_t*)0x2000000002ca = 0;
    memset((void*)0x2000000002cb, 0, 4);
    *(uint8_t*)0x2000000002cf = 0;
    *(uint8_t*)0x2000000002d0 = 0;
    *(uint8_t*)0x2000000002d1 = 0;
    *(uint8_t*)0x2000000002d2 = 0;
    memset((void*)0x2000000002d3, 0, 4);
    *(uint8_t*)0x2000000002d7 = 0;
    *(uint8_t*)0x2000000002d8 = 1;
    *(uint8_t*)0x2000000002d9 = 6;
    *(uint8_t*)0x2000000002da = 0;
    memset((void*)0x2000000002db, 0, 4);
    *(uint8_t*)0x2000000002df = 0;
    *(uint8_t*)0x2000000002e0 = 0;
    *(uint8_t*)0x2000000002e1 = 1;
    *(uint8_t*)0x2000000002e2 = 1;
    memset((void*)0x2000000002e3, 0, 4);
    *(uint8_t*)0x2000000002e7 = 0;
    *(uint8_t*)0x2000000002e8 = 0xf;
    *(uint8_t*)0x2000000002e9 = 6;
    *(uint8_t*)0x2000000002ea = 2;
    memset((void*)0x2000000002eb, 0, 4);
    *(uint8_t*)0x2000000002ef = 0;
    *(uint8_t*)0x2000000002f0 = 4;
    *(uint8_t*)0x2000000002f1 = 0;
    *(uint8_t*)0x2000000002f2 = 0xfe;
    memset((void*)0x2000000002f3, 0, 4);
    *(uint8_t*)0x2000000002f7 = 0;
    *(uint8_t*)0x2000000002f8 = 0;
    *(uint8_t*)0x2000000002f9 = 0;
    *(uint8_t*)0x2000000002fa = 0;
    memset((void*)0x2000000002fb, 0, 4);
    *(uint8_t*)0x2000000002ff = 0;
    *(uint8_t*)0x200000000300 = 0xfe;
    *(uint8_t*)0x200000000301 = 0;
    *(uint8_t*)0x200000000302 = 0;
    memset((void*)0x200000000303, 0, 4);
    *(uint8_t*)0x200000000307 = 0;
    *(uint8_t*)0x200000000308 = 0;
    *(uint8_t*)0x200000000309 = 0;
    *(uint8_t*)0x20000000030a = 2;
    memset((void*)0x20000000030b, 0, 4);
    *(uint8_t*)0x20000000030f = 0;
    *(uint8_t*)0x200000000310 = 7;
    *(uint8_t*)0x200000000311 = 0;
    *(uint8_t*)0x200000000312 = 0;
    memset((void*)0x200000000313, 0, 4);
    *(uint8_t*)0x200000000317 = 0x39;
    *(uint8_t*)0x200000000318 = 0;
    *(uint8_t*)0x200000000319 = 0;
    *(uint8_t*)0x20000000031a = 0;
    memset((void*)0x20000000031b, 0, 4);
    *(uint8_t*)0x20000000031f = 8;
    *(uint8_t*)0x200000000320 = 0;
    *(uint8_t*)0x200000000321 = 0;
    *(uint8_t*)0x200000000322 = 0;
    memset((void*)0x200000000323, 0, 4);
    *(uint8_t*)0x200000000327 = 0xfe;
    *(uint8_t*)0x200000000328 = 3;
    *(uint8_t*)0x200000000329 = 0;
    *(uint8_t*)0x20000000032a = 0xfa;
    memset((void*)0x20000000032b, 0, 4);
    *(uint8_t*)0x20000000032f = 0;
    *(uint8_t*)0x200000000330 = 0;
    *(uint8_t*)0x200000000331 = 2;
    *(uint8_t*)0x200000000332 = 0;
    memset((void*)0x200000000333, 0, 4);
    *(uint8_t*)0x200000000337 = 0;
    *(uint8_t*)0x200000000338 = 0;
    *(uint8_t*)0x200000000339 = 0;
    *(uint8_t*)0x20000000033a = 0;
    memset((void*)0x20000000033b, 0, 4);
    *(uint8_t*)0x20000000033f = 0;
    *(uint8_t*)0x200000000340 = 0;
    *(uint8_t*)0x200000000341 = 0;
    *(uint8_t*)0x200000000342 = 0;
    memset((void*)0x200000000343, 0, 4);
    *(uint8_t*)0x200000000347 = 1;
    *(uint8_t*)0x200000000348 = 0;
    *(uint8_t*)0x200000000349 = 0;
    *(uint8_t*)0x20000000034a = 0;
    memset((void*)0x20000000034b, 0, 4);
    *(uint8_t*)0x20000000034f = 0;
    *(uint8_t*)0x200000000350 = 0xfe;
    *(uint8_t*)0x200000000351 = 0;
    *(uint8_t*)0x200000000352 = 0;
    memset((void*)0x200000000353, 0, 4);
    *(uint8_t*)0x200000000357 = 0;
    *(uint8_t*)0x200000000358 = 0;
    *(uint8_t*)0x200000000359 = 0;
    *(uint8_t*)0x20000000035a = 0;
    memset((void*)0x20000000035b, 0, 4);
    *(uint8_t*)0x20000000035f = 0;
    syscall(__NR_ioctl, /*fd=*/(intptr_t)-1, /*cmd=*/0x8208ae63,
            /*arg=*/0x200000000280ul);
    break;
  }
}
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);
  setup_sysctl();
  const char* reason;
  (void)reason;
  loop();
  return 0;
}