// https://syzkaller.appspot.com/bug?id=be6e90ce70987950e6deb3bac8418344ca8b96cd
// 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 __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 void use_temporary_dir(void)
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    exit(1);
  if (chmod(tmpdir, 0777))
    exit(1);
  if (chdir(tmpdir))
    exit(1);
}

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;
}

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  int iter = 0;
  DIR* dp = 0;
  const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW;

retry:
  while (umount2(dir, umount_flags) == 0) {
  }
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exit(1);
    }
    exit(1);
  }
  struct dirent* ep = 0;
  while ((ep = readdir(dp))) {
    if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
      continue;
    char filename[FILENAME_MAX];
    snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
    while (umount2(filename, umount_flags) == 0) {
    }
    struct stat st;
    if (lstat(filename, &st))
      exit(1);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      if (unlink(filename) == 0)
        break;
      if (errno == EPERM) {
        int fd = open(filename, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno != EBUSY || i > 100)
        exit(1);
      if (umount2(filename, umount_flags))
        exit(1);
    }
  }
  closedir(dp);
  for (int i = 0;; i++) {
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EPERM) {
        int fd = open(dir, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno == EBUSY) {
        if (umount2(dir, umount_flags))
          exit(1);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exit(1);
  }
}

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");
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

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 < 11; 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++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      exit(1);
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      if (chdir(cwdbuf))
        exit(1);
      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;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    NONFAILING(memcpy((void*)0x200000000080, "ext4\000", 5));
    NONFAILING(memcpy((void*)0x200000000140, "./file1\000", 8));
    NONFAILING(memcpy((void*)0x2000000003c0, "errors=remount-ro", 17));
    NONFAILING(*(uint8_t*)0x2000000003d1 = 0x2c);
    NONFAILING(memcpy((void*)0x2000000003d2, "nodiscard", 9));
    NONFAILING(*(uint8_t*)0x2000000003db = 0x2c);
    NONFAILING(memcpy((void*)0x2000000003dc, "noquota", 7));
    NONFAILING(*(uint8_t*)0x2000000003e3 = 0x2c);
    NONFAILING(memcpy((void*)0x2000000003e4, "init_itable", 11));
    NONFAILING(*(uint8_t*)0x2000000003ef = 0x2c);
    NONFAILING(memcpy((void*)0x2000000003f0, "stripe", 6));
    NONFAILING(*(uint8_t*)0x2000000003f6 = 0x3d);
    NONFAILING(sprintf((char*)0x2000000003f7, "0x%016llx", (long long)0x79));
    NONFAILING(*(uint8_t*)0x200000000409 = 0x2c);
    NONFAILING(memcpy((void*)0x20000000040a, "resgid", 6));
    NONFAILING(*(uint8_t*)0x200000000410 = 0x3d);
    NONFAILING(sprintf((char*)0x200000000411, "0x%016llx", (long long)0));
    NONFAILING(*(uint8_t*)0x200000000423 = 0x2c);
    NONFAILING(memcpy((void*)0x200000000424, "sysvgroups", 10));
    NONFAILING(*(uint8_t*)0x20000000042e = 0x2c);
    NONFAILING(memcpy((void*)0x20000000042f, "bsddf", 5));
    NONFAILING(*(uint8_t*)0x200000000434 = 0x2c);
    NONFAILING(memcpy((void*)0x200000000435, "lazytime", 8));
    NONFAILING(*(uint8_t*)0x20000000043d = 0x2c);
    NONFAILING(*(uint8_t*)0x20000000043e = 0);
    NONFAILING(memcpy(
        (void*)0x200000002d00,
        "\x78\x9c\xec\xdd\xcf\x6b\x1c\x6f\x19\x00\xf0\x67\x26\xd9\x6f\x7f\xe5"
        "\x6b\x52\xf5\x50\x0b\xb6\xc5\x56\xd2\xa2\xdd\x4d\x1a\xdb\x06\x0f\xb5"
        "\x82\xd8\x53\xc1\x5a\xef\x35\x26\x9b\x10\xb2\xc9\x86\xec\xa6\x6d\x42"
        "\x91\x14\xef\x0a\x22\x2a\x78\xf2\xe4\x45\xf0\x0f\x10\xa4\x7f\x82\x08"
        "\x05\xbd\x4b\x15\x45\xb4\xd5\x83\x07\x75\x65\x67\x67\x6b\x1b\x77\x9b"
        "\x48\xb7\x3b\x35\xf9\x7c\x60\x3a\xef\x3b\xef\xee\x3e\xcf\xdb\xb0\x33"
        "\xf3\xce\xbc\xec\x04\x70\x68\x9d\x8b\x88\x9b\x11\x31\x12\x11\x97\x22"
        "\x62\x3c\xdf\x9e\xe6\xcb\xad\x76\xfb\x9d\xce\xeb\x5e\x3c\x7f\x34\xdf"
        "\x5e\x92\x68\xb5\xee\xfe\x39\x89\x24\xdf\xd6\xfd\xac\x24\x5f\x9f\x88"
        "\x88\x9d\x88\x38\x1a\x11\x5f\xbd\x15\xf1\x8d\xe4\xbf\xe3\x36\xb6\xb6"
        "\x57\xe6\x6a\xb5\xea\x46\x5e\xaf\x34\x57\xd7\x2b\x8d\xad\xed\xcb\xcb"
        "\xab\x73\x4b\xd5\xa5\xea\xda\xcc\xcc\xf4\xb5\xd9\xeb\xb3\x57\x67\xa7"
        "\x06\xd2\xcf\x89\x88\xb8\xf1\xa5\xdf\x7f\xff\x3b\x3f\xf9\xf2\x8d\x5f"
        "\x7c\xf6\xc1\x6f\xef\xfd\xf1\xe2\x37\xdb\x69\x8d\xe5\xed\xaf\xf6\x63"
        "\x90\x3a\x5d\x2f\x65\xff\x17\x5d\xa3\x11\xb1\xf1\x2e\x82\x15\x60\x24"
        "\x5f\x97\xfa\xb4\x7f\x7b\x64\x88\xc9\x00\x00\xb0\xa7\xf6\x39\xfe\x47"
        "\x23\xe2\x53\xd9\xf9\xff\x78\x8c\x64\x67\xa7\x00\x00\x00\xc0\x41\xd2"
        "\xfa\xc2\x58\xfc\x23\x89\x68\x01\x00\x00\x00\x07\x56\x9a\xcd\x81\x4d"
        "\xd2\x72\x3e\x17\x60\x2c\xd2\xb4\x5c\xee\xcc\xe1\xfd\x78\x1c\x4f\x6b"
        "\xf5\x46\xf3\x33\x8b\xf5\xcd\xb5\x85\xce\x5c\xd9\x89\x28\xa5\x8b\xcb"
        "\xb5\xea\x54\x3e\x57\x78\x22\x4a\x49\xbb\x3e\x9d\xcf\xb1\xed\xd6\xaf"
        "\xec\xaa\xcf\x44\xc4\xc9\x88\xf8\xde\xf8\xb1\xac\x5e\x9e\xaf\xd7\x16"
        "\x8a\xbe\xf8\x01\x00\x00\x00\x87\xc4\x89\x5d\xe3\xff\xbf\x8d\x67\xe3"
        "\xff\x23\x45\xe7\x05\x00\x00\x00\x0c\xd8\x44\xd1\x09\x00\x00\x00\x00"
        "\xef\x9c\xf1\x3f\x00\x00\x00\x1c\x7c\xc6\xff\x00\x00\x00\x70\xa0\x7d"
        "\xe5\xf6\xed\xf6\xd2\xea\x3e\xff\x7a\xe1\xfe\xd6\xe6\x4a\xfd\xfe\xe5"
        "\x85\x6a\x63\xa5\xbc\xba\x39\x5f\x9e\xaf\x6f\xac\x97\x97\xea\xf5\xa5"
        "\xec\x37\xfb\x56\xf7\xfa\xbc\x5a\xbd\xbe\xfe\xb9\x58\xdb\x7c\x58\x69"
        "\x56\x1b\xcd\x4a\x63\x6b\xfb\xde\x6a\x7d\x73\xad\x79\x6f\xf9\xb5\x47"
        "\x60\x03\x00\x00\x00\x43\x74\xf2\xec\x93\xdf\x24\x11\xb1\xf3\xf9\x63"
        "\xd9\xd2\xf6\x41\xd1\x49\x01\x43\x91\xec\xd1\x9e\x3d\x24\xe4\x59\x5e"
        "\xf9\xdd\x10\x12\x02\x86\x66\xa4\xe8\x04\x80\xc2\x8c\x16\x9d\x00\x50"
        "\x98\x52\xd1\x09\x00\x85\xdb\xeb\x3a\x40\xdf\xc9\x3b\xbf\x1c\x7c\x2e"
        "\x00\x00\xc0\xbb\x31\xf9\x89\xfe\xf7\xff\x5d\x1b\x80\x83\x2d\x2d\x3a"
        "\x01\x00\x60\xe8\xdc\xff\x87\xc3\xab\xf4\xfa\x0c\xc0\xab\xc5\x65\x02"
        "\x14\xe5\x23\x7b\xb4\xbf\xfd\xfd\xff\x56\xeb\x7f\x4a\x08\x00\x00\x18"
        "\xb8\xb1\x6c\x49\xd2\x72\x7e\x2f\x70\x2c\xd2\xb4\x5c\x8e\xf8\x30\x7b"
        "\x2c\x40\x29\x59\x5c\xae\x55\xa7\xf2\xf1\xc1\xaf\xc7\x4b\x47\xda\xf5"
        "\xe9\xec\x9d\xc9\x9e\x73\x86\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x8e\x56\x2b\x89\x16\x00\x00"
        "\x00\x70\xa0\x45\xa4\x7f\x48\xb2\x5f\xf3\x8f\x98\x1c\xbf\x30\xb6\xfb"
        "\xfa\xc0\x07\xc9\xdf\xc7\xb3\x75\x44\x3c\xf8\xd1\xdd\x1f\x3c\x9c\x6b"
        "\x36\x37\xa6\xdb\xdb\xff\xf2\x72\x7b\xf3\x87\xf9\xf6\x2b\x45\x5c\xc1"
        "\x00\x00\x00\x00\x76\xeb\x8e\xd3\xbb\xe3\x78\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x18\xa4"
        "\x17\xcf\x1f\xcd\x77\x97\x61\xc6\xfd\xd3\x17\x23\x62\xa2\x67\xfc\xb3"
        "\x47\xb3\xd5\xd1\x28\x45\xc4\xf1\xbf\x26\x31\xfa\xca\xfb\x92\x88\x18"
        "\x19\x40\xfc\x9d\xc7\x11\x71\xaa\x57\xfc\xa4\x9d\x56\x4c\x44\x27\x8b"
        "\x5e\xf1\x8f\x15\x18\x3f\x8d\x88\x13\x03\x88\x0f\x87\xd9\x93\xf6\xfe"
        "\xe7\x66\xaf\xef\x5f\x1a\xe7\xb2\x75\xef\xef\xdf\x68\xbe\xbc\xad\xfe"
        "\xfb\xbf\x34\xba\xfb\xbf\x91\x3e\xfb\x9f\x0f\xf7\x19\xe3\xf4\xd3\x9f"
        "\x55\xfa\xc6\x7f\x1c\x71\x7a\xb4\xf7\xfe\xa7\x1b\x3f\xe9\x13\xff\xfc"
        "\x3e\xe3\x7f\xfd\x6b\xdb\xdb\xfd\xda\x5a\x3f\x8e\x98\xec\x79\xfc\x49"
        "\x5e\x8b\x55\x69\xae\xae\x57\x1a\x5b\xdb\x97\x97\x57\xe7\x96\xaa\x4b"
        "\xd5\xb5\x99\x99\xe9\x6b\xb3\xd7\x67\xaf\xce\x4e\x55\x16\x97\x6b\xd5"
        "\xfc\xdf\x9e\x31\xbe\xfb\xc9\x9f\xff\xeb\x4d\xfd\x3f\xde\x27\xfe\xc4"
        "\x1e\xfd\xbf\xb0\xcf\xfe\xff\xf3\xe9\xc3\xe7\x1f\xeb\x14\x4b\xbd\xe2"
        "\x5f\x3c\xdf\xfb\xf8\x7b\xaa\x4f\xfc\x34\x3f\xf6\x7d\x3a\x2f\xb7\xdb"
        "\x27\xbb\xe5\x9d\x4e\xf9\x55\x67\x7e\xfa\xab\x33\x6f\xea\xff\x42\x9f"
        "\xfe\xbf\xfc\xfb\xf7\x38\xd0\xb6\x63\x5e\xdc\x67\xff\x2f\xdd\xf9\xd6"
        "\xb3\x7d\xbe\x14\x00\x18\x82\xc6\xd6\xf6\xca\x5c\xad\x56\xdd\xf8\x7f"
        "\x2c\xa4\xf1\x5e\xa4\xa1\x30\x90\xc2\x91\xf7\x23\x0d\x85\x4e\xa1\xe8"
        "\x3d\x13\x00\x00\x30\x68\xff\x39\xe9\x2f\x3a\x13\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x38\xbc\x86\xf1\x73\x62\xbb"
        "\x63\xee\x14\xd3\x55\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\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\x37\xfa"
        "\x77\x00\x00\x00\xff\xff\xb1\xfe\xd9\x7a",
        1234));
    NONFAILING(syz_mount_image(
        /*fs=*/0x200000000080, /*dir=*/0x200000000140,
        /*flags=MS_LAZYTIME|MS_REC|MS_SYNCHRONOUS|MS_RELATIME|MS_NOSUID|0x800*/
        0x2204812, /*opts=*/0x2000000003c0, /*chdir=*/0x10, /*size=*/0x4d2,
        /*img=*/0x200000002d00));
    break;
  case 1:
    NONFAILING(memcpy((void*)0x200000000040, "./bus\000", 6));
    res = syscall(__NR_creat, /*file=*/0x200000000040ul, /*mode=*/0ul);
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    NONFAILING(memcpy((void*)0x200000000180, "./bus\000", 6));
    res = syscall(
        __NR_open, /*file=*/0x200000000180ul,
        /*flags=O_TRUNC|O_SYNC|O_NOATIME|O_LARGEFILE|O_CREAT|O_RDWR|0x3c*/
        0x14927eul, /*mode=*/0ul);
    if (res != -1)
      r[1] = res;
    break;
  case 3:
    NONFAILING(memcpy(
        (void*)0x2000000007c0,
        "syz1\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
        "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
        "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
        "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
        "\000\000\000\000\000\000\000\000\000",
        80));
    NONFAILING(*(uint16_t*)0x200000000810 = 0x13);
    NONFAILING(*(uint16_t*)0x200000000812 = 4);
    NONFAILING(*(uint16_t*)0x200000000814 = 4);
    NONFAILING(*(uint16_t*)0x200000000816 = 6);
    NONFAILING(*(uint32_t*)0x200000000818 = 0x27);
    NONFAILING(*(uint32_t*)0x20000000081c = 3);
    NONFAILING(*(uint32_t*)0x200000000820 = 0x430);
    NONFAILING(*(uint32_t*)0x200000000824 = 7);
    NONFAILING(*(uint32_t*)0x200000000828 = 6);
    NONFAILING(*(uint32_t*)0x20000000082c = 8);
    NONFAILING(*(uint32_t*)0x200000000830 = 2);
    NONFAILING(*(uint32_t*)0x200000000834 = 7);
    NONFAILING(*(uint32_t*)0x200000000838 = 0);
    NONFAILING(*(uint32_t*)0x20000000083c = 5);
    NONFAILING(*(uint32_t*)0x200000000840 = 0x80000001);
    NONFAILING(*(uint32_t*)0x200000000844 = 1);
    NONFAILING(*(uint32_t*)0x200000000848 = 1);
    NONFAILING(*(uint32_t*)0x20000000084c = 3);
    NONFAILING(*(uint32_t*)0x200000000850 = 0x401);
    NONFAILING(*(uint32_t*)0x200000000854 = 9);
    NONFAILING(*(uint32_t*)0x200000000858 = 8);
    NONFAILING(*(uint32_t*)0x20000000085c = 2);
    NONFAILING(*(uint32_t*)0x200000000860 = 0xb67);
    NONFAILING(*(uint32_t*)0x200000000864 = 0xc2df);
    NONFAILING(*(uint32_t*)0x200000000868 = 0x93a);
    NONFAILING(*(uint32_t*)0x20000000086c = 0x884);
    NONFAILING(*(uint32_t*)0x200000000870 = 0x41);
    NONFAILING(*(uint32_t*)0x200000000874 = 5);
    NONFAILING(*(uint32_t*)0x200000000878 = 0x800);
    NONFAILING(*(uint32_t*)0x20000000087c = 9);
    NONFAILING(*(uint32_t*)0x200000000880 = 6);
    NONFAILING(*(uint32_t*)0x200000000884 = 0xffff);
    NONFAILING(*(uint32_t*)0x200000000888 = 0x40);
    NONFAILING(*(uint32_t*)0x20000000088c = 0);
    NONFAILING(*(uint32_t*)0x200000000890 = 0x58);
    NONFAILING(*(uint32_t*)0x200000000894 = 9);
    NONFAILING(*(uint32_t*)0x200000000898 = 0xcba);
    NONFAILING(*(uint32_t*)0x20000000089c = 5);
    NONFAILING(*(uint32_t*)0x2000000008a0 = 4);
    NONFAILING(*(uint32_t*)0x2000000008a4 = 0);
    NONFAILING(*(uint32_t*)0x2000000008a8 = 0xfff);
    NONFAILING(*(uint32_t*)0x2000000008ac = 0x80000001);
    NONFAILING(*(uint32_t*)0x2000000008b0 = 5);
    NONFAILING(*(uint32_t*)0x2000000008b4 = 6);
    NONFAILING(*(uint32_t*)0x2000000008b8 = 5);
    NONFAILING(*(uint32_t*)0x2000000008bc = 0x24);
    NONFAILING(*(uint32_t*)0x2000000008c0 = 8);
    NONFAILING(*(uint32_t*)0x2000000008c4 = 9);
    NONFAILING(*(uint32_t*)0x2000000008c8 = 4);
    NONFAILING(*(uint32_t*)0x2000000008cc = 5);
    NONFAILING(*(uint32_t*)0x2000000008d0 = 5);
    NONFAILING(*(uint32_t*)0x2000000008d4 = 5);
    NONFAILING(*(uint32_t*)0x2000000008d8 = 5);
    NONFAILING(*(uint32_t*)0x2000000008dc = 4);
    NONFAILING(*(uint32_t*)0x2000000008e0 = 8);
    NONFAILING(*(uint32_t*)0x2000000008e4 = 0);
    NONFAILING(*(uint32_t*)0x2000000008e8 = 9);
    NONFAILING(*(uint32_t*)0x2000000008ec = 0x10001);
    NONFAILING(*(uint32_t*)0x2000000008f0 = 7);
    NONFAILING(*(uint32_t*)0x2000000008f4 = 0x5b6b);
    NONFAILING(*(uint32_t*)0x2000000008f8 = 7);
    NONFAILING(*(uint32_t*)0x2000000008fc = 0x3fe0000);
    NONFAILING(*(uint32_t*)0x200000000900 = 0x80);
    NONFAILING(*(uint32_t*)0x200000000904 = 7);
    NONFAILING(*(uint32_t*)0x200000000908 = 0xf);
    NONFAILING(*(uint32_t*)0x20000000090c = 0xeb5);
    NONFAILING(*(uint32_t*)0x200000000910 = 4);
    NONFAILING(*(uint32_t*)0x200000000914 = 0x800);
    NONFAILING(*(uint32_t*)0x200000000918 = 0xd9);
    NONFAILING(*(uint32_t*)0x20000000091c = 0x2509);
    NONFAILING(*(uint32_t*)0x200000000920 = 0x400);
    NONFAILING(*(uint32_t*)0x200000000924 = 0x64);
    NONFAILING(*(uint32_t*)0x200000000928 = 0x50000000);
    NONFAILING(*(uint32_t*)0x20000000092c = 9);
    NONFAILING(*(uint32_t*)0x200000000930 = 0xfffffffc);
    NONFAILING(*(uint32_t*)0x200000000934 = 0x401);
    NONFAILING(*(uint32_t*)0x200000000938 = 7);
    NONFAILING(*(uint32_t*)0x20000000093c = 2);
    NONFAILING(*(uint32_t*)0x200000000940 = 7);
    NONFAILING(*(uint32_t*)0x200000000944 = 0xfffffffd);
    NONFAILING(*(uint32_t*)0x200000000948 = 0x100);
    NONFAILING(*(uint32_t*)0x20000000094c = 7);
    NONFAILING(*(uint32_t*)0x200000000950 = 0x400);
    NONFAILING(*(uint32_t*)0x200000000954 = 0xf38);
    NONFAILING(*(uint32_t*)0x200000000958 = 0xd51);
    NONFAILING(*(uint32_t*)0x20000000095c = 9);
    NONFAILING(*(uint32_t*)0x200000000960 = 0x50592a5);
    NONFAILING(*(uint32_t*)0x200000000964 = 6);
    NONFAILING(*(uint32_t*)0x200000000968 = 0xbc92);
    NONFAILING(*(uint32_t*)0x20000000096c = 1);
    NONFAILING(*(uint32_t*)0x200000000970 = 3);
    NONFAILING(*(uint32_t*)0x200000000974 = 0xc);
    NONFAILING(*(uint32_t*)0x200000000978 = 0x10001);
    NONFAILING(*(uint32_t*)0x20000000097c = 0xc);
    NONFAILING(*(uint32_t*)0x200000000980 = 6);
    NONFAILING(*(uint32_t*)0x200000000984 = 6);
    NONFAILING(*(uint32_t*)0x200000000988 = 0x101);
    NONFAILING(*(uint32_t*)0x20000000098c = 0x1ff);
    NONFAILING(*(uint32_t*)0x200000000990 = 0xc1e);
    NONFAILING(*(uint32_t*)0x200000000994 = 0);
    NONFAILING(*(uint32_t*)0x200000000998 = 5);
    NONFAILING(*(uint32_t*)0x20000000099c = 0x37d00f32);
    NONFAILING(*(uint32_t*)0x2000000009a0 = 2);
    NONFAILING(*(uint32_t*)0x2000000009a4 = 0);
    NONFAILING(*(uint32_t*)0x2000000009a8 = 0x7f);
    NONFAILING(*(uint32_t*)0x2000000009ac = 0);
    NONFAILING(*(uint32_t*)0x2000000009b0 = 0xc);
    NONFAILING(*(uint32_t*)0x2000000009b4 = 6);
    NONFAILING(*(uint32_t*)0x2000000009b8 = 0x18cb8);
    NONFAILING(*(uint32_t*)0x2000000009bc = 6);
    NONFAILING(*(uint32_t*)0x2000000009c0 = 0x10001);
    NONFAILING(*(uint32_t*)0x2000000009c4 = 6);
    NONFAILING(*(uint32_t*)0x2000000009c8 = 0x1000000);
    NONFAILING(*(uint32_t*)0x2000000009cc = 2);
    NONFAILING(*(uint32_t*)0x2000000009d0 = 0x800);
    NONFAILING(*(uint32_t*)0x2000000009d4 = 0x10001);
    NONFAILING(*(uint32_t*)0x2000000009d8 = 0);
    NONFAILING(*(uint32_t*)0x2000000009dc = 1);
    NONFAILING(*(uint32_t*)0x2000000009e0 = 0xf8f);
    NONFAILING(*(uint32_t*)0x2000000009e4 = 9);
    NONFAILING(*(uint32_t*)0x2000000009e8 = 0x37f87958);
    NONFAILING(*(uint32_t*)0x2000000009ec = 0xa);
    NONFAILING(*(uint32_t*)0x2000000009f0 = 0x1ff);
    NONFAILING(*(uint32_t*)0x2000000009f4 = 4);
    NONFAILING(*(uint32_t*)0x2000000009f8 = 0xa30a);
    NONFAILING(*(uint32_t*)0x2000000009fc = 5);
    NONFAILING(*(uint32_t*)0x200000000a00 = 7);
    NONFAILING(*(uint32_t*)0x200000000a04 = 0xe);
    NONFAILING(*(uint32_t*)0x200000000a08 = 7);
    NONFAILING(*(uint32_t*)0x200000000a0c = 0x7f);
    NONFAILING(*(uint32_t*)0x200000000a10 = 0x13);
    NONFAILING(*(uint32_t*)0x200000000a14 = 4);
    NONFAILING(*(uint32_t*)0x200000000a18 = 0x1000);
    NONFAILING(*(uint32_t*)0x200000000a1c = 0xfc43);
    NONFAILING(*(uint32_t*)0x200000000a20 = 4);
    NONFAILING(*(uint32_t*)0x200000000a24 = 0x10001);
    NONFAILING(*(uint32_t*)0x200000000a28 = 0x10000);
    NONFAILING(*(uint32_t*)0x200000000a2c = 6);
    NONFAILING(*(uint32_t*)0x200000000a30 = 2);
    NONFAILING(*(uint32_t*)0x200000000a34 = 5);
    NONFAILING(*(uint32_t*)0x200000000a38 = 0);
    NONFAILING(*(uint32_t*)0x200000000a3c = 0);
    NONFAILING(*(uint32_t*)0x200000000a40 = -1);
    NONFAILING(*(uint32_t*)0x200000000a44 = 4);
    NONFAILING(*(uint32_t*)0x200000000a48 = 8);
    NONFAILING(*(uint32_t*)0x200000000a4c = 0xfffff800);
    NONFAILING(*(uint32_t*)0x200000000a50 = 8);
    NONFAILING(*(uint32_t*)0x200000000a54 = 0x30000);
    NONFAILING(*(uint32_t*)0x200000000a58 = 0x7ff);
    NONFAILING(*(uint32_t*)0x200000000a5c = 0x3ff);
    NONFAILING(*(uint32_t*)0x200000000a60 = 7);
    NONFAILING(*(uint32_t*)0x200000000a64 = 0x77);
    NONFAILING(*(uint32_t*)0x200000000a68 = 5);
    NONFAILING(*(uint32_t*)0x200000000a6c = 0x556b);
    NONFAILING(*(uint32_t*)0x200000000a70 = 0x704c);
    NONFAILING(*(uint32_t*)0x200000000a74 = 0);
    NONFAILING(*(uint32_t*)0x200000000a78 = 0x8000);
    NONFAILING(*(uint32_t*)0x200000000a7c = 0x100);
    NONFAILING(*(uint32_t*)0x200000000a80 = 5);
    NONFAILING(*(uint32_t*)0x200000000a84 = 0xc8285b93);
    NONFAILING(*(uint32_t*)0x200000000a88 = 0x6f4c);
    NONFAILING(*(uint32_t*)0x200000000a8c = 0xc);
    NONFAILING(*(uint32_t*)0x200000000a90 = 0x387a);
    NONFAILING(*(uint32_t*)0x200000000a94 = 2);
    NONFAILING(*(uint32_t*)0x200000000a98 = 4);
    NONFAILING(*(uint32_t*)0x200000000a9c = 3);
    NONFAILING(*(uint32_t*)0x200000000aa0 = 0xec);
    NONFAILING(*(uint32_t*)0x200000000aa4 = 4);
    NONFAILING(*(uint32_t*)0x200000000aa8 = 4);
    NONFAILING(*(uint32_t*)0x200000000aac = 1);
    NONFAILING(*(uint32_t*)0x200000000ab0 = 0x3ff);
    NONFAILING(*(uint32_t*)0x200000000ab4 = 0);
    NONFAILING(*(uint32_t*)0x200000000ab8 = 9);
    NONFAILING(*(uint32_t*)0x200000000abc = 8);
    NONFAILING(*(uint32_t*)0x200000000ac0 = 1);
    NONFAILING(*(uint32_t*)0x200000000ac4 = 6);
    NONFAILING(*(uint32_t*)0x200000000ac8 = 0x2a);
    NONFAILING(*(uint32_t*)0x200000000acc = 0x3e5293);
    NONFAILING(*(uint32_t*)0x200000000ad0 = 8);
    NONFAILING(*(uint32_t*)0x200000000ad4 = 0xd);
    NONFAILING(*(uint32_t*)0x200000000ad8 = 0x400);
    NONFAILING(*(uint32_t*)0x200000000adc = 7);
    NONFAILING(*(uint32_t*)0x200000000ae0 = 6);
    NONFAILING(*(uint32_t*)0x200000000ae4 = 0xed);
    NONFAILING(*(uint32_t*)0x200000000ae8 = 3);
    NONFAILING(*(uint32_t*)0x200000000aec = 1);
    NONFAILING(*(uint32_t*)0x200000000af0 = 0x1ff);
    NONFAILING(*(uint32_t*)0x200000000af4 = 0xc78b);
    NONFAILING(*(uint32_t*)0x200000000af8 = 7);
    NONFAILING(*(uint32_t*)0x200000000afc = 0xa);
    NONFAILING(*(uint32_t*)0x200000000b00 = 1);
    NONFAILING(*(uint32_t*)0x200000000b04 = 0xa232);
    NONFAILING(*(uint32_t*)0x200000000b08 = 3);
    NONFAILING(*(uint32_t*)0x200000000b0c = 4);
    NONFAILING(*(uint32_t*)0x200000000b10 = 2);
    NONFAILING(*(uint32_t*)0x200000000b14 = 0x7fffffff);
    NONFAILING(*(uint32_t*)0x200000000b18 = 0xd4);
    NONFAILING(*(uint32_t*)0x200000000b1c = 3);
    NONFAILING(*(uint32_t*)0x200000000b20 = 0x800);
    NONFAILING(*(uint32_t*)0x200000000b24 = 6);
    NONFAILING(*(uint32_t*)0x200000000b28 = 3);
    NONFAILING(*(uint32_t*)0x200000000b2c = 0x7ff);
    NONFAILING(*(uint32_t*)0x200000000b30 = 0x5702);
    NONFAILING(*(uint32_t*)0x200000000b34 = 0x20c2);
    NONFAILING(*(uint32_t*)0x200000000b38 = 0x5f0);
    NONFAILING(*(uint32_t*)0x200000000b3c = 0x200);
    NONFAILING(*(uint32_t*)0x200000000b40 = 0xe3b);
    NONFAILING(*(uint32_t*)0x200000000b44 = 0x7fff);
    NONFAILING(*(uint32_t*)0x200000000b48 = 2);
    NONFAILING(*(uint32_t*)0x200000000b4c = 0x93);
    NONFAILING(*(uint32_t*)0x200000000b50 = 0x932);
    NONFAILING(*(uint32_t*)0x200000000b54 = 0x800);
    NONFAILING(*(uint32_t*)0x200000000b58 = 9);
    NONFAILING(*(uint32_t*)0x200000000b5c = 0x31b);
    NONFAILING(*(uint32_t*)0x200000000b60 = 5);
    NONFAILING(*(uint32_t*)0x200000000b64 = 0);
    NONFAILING(*(uint32_t*)0x200000000b68 = 2);
    NONFAILING(*(uint32_t*)0x200000000b6c = 8);
    NONFAILING(*(uint32_t*)0x200000000b70 = 0xcdf);
    NONFAILING(*(uint32_t*)0x200000000b74 = 9);
    NONFAILING(*(uint32_t*)0x200000000b78 = 0x61);
    NONFAILING(*(uint32_t*)0x200000000b7c = 0x57f);
    NONFAILING(*(uint32_t*)0x200000000b80 = 3);
    NONFAILING(*(uint32_t*)0x200000000b84 = 0x10000);
    NONFAILING(*(uint32_t*)0x200000000b88 = 1);
    NONFAILING(*(uint32_t*)0x200000000b8c = 0x5435e849);
    NONFAILING(*(uint32_t*)0x200000000b90 = 0x1085670e);
    NONFAILING(*(uint32_t*)0x200000000b94 = 6);
    NONFAILING(*(uint32_t*)0x200000000b98 = 0x10001);
    NONFAILING(*(uint32_t*)0x200000000b9c = 2);
    NONFAILING(*(uint32_t*)0x200000000ba0 = 8);
    NONFAILING(*(uint32_t*)0x200000000ba4 = 0xfffffff9);
    NONFAILING(*(uint32_t*)0x200000000ba8 = 0x10);
    NONFAILING(*(uint32_t*)0x200000000bac = 9);
    NONFAILING(*(uint32_t*)0x200000000bb0 = 1);
    NONFAILING(*(uint32_t*)0x200000000bb4 = 7);
    NONFAILING(*(uint32_t*)0x200000000bb8 = 0xf);
    NONFAILING(*(uint32_t*)0x200000000bbc = 0x40);
    NONFAILING(*(uint32_t*)0x200000000bc0 = 0xd583);
    NONFAILING(*(uint32_t*)0x200000000bc4 = 1);
    NONFAILING(*(uint32_t*)0x200000000bc8 = 0x1000);
    NONFAILING(*(uint32_t*)0x200000000bcc = 0xd7b);
    NONFAILING(*(uint32_t*)0x200000000bd0 = 0xa4e1);
    NONFAILING(*(uint32_t*)0x200000000bd4 = 1);
    NONFAILING(*(uint32_t*)0x200000000bd8 = 4);
    NONFAILING(*(uint32_t*)0x200000000bdc = 0xa);
    NONFAILING(*(uint32_t*)0x200000000be0 = 3);
    NONFAILING(*(uint32_t*)0x200000000be4 = 1);
    NONFAILING(*(uint32_t*)0x200000000be8 = 2);
    NONFAILING(*(uint32_t*)0x200000000bec = 0xffffffc1);
    NONFAILING(*(uint32_t*)0x200000000bf0 = 0xfffffff7);
    NONFAILING(*(uint32_t*)0x200000000bf4 = 4);
    NONFAILING(*(uint32_t*)0x200000000bf8 = 7);
    NONFAILING(*(uint32_t*)0x200000000bfc = 0x8001);
    NONFAILING(*(uint32_t*)0x200000000c00 = 0x40);
    NONFAILING(*(uint32_t*)0x200000000c04 = 8);
    NONFAILING(*(uint32_t*)0x200000000c08 = 0xfffffffc);
    NONFAILING(*(uint32_t*)0x200000000c0c = 0);
    NONFAILING(*(uint32_t*)0x200000000c10 = 1);
    NONFAILING(*(uint32_t*)0x200000000c14 = 5);
    NONFAILING(*(uint32_t*)0x200000000c18 = 6);
    syscall(__NR_write, /*fd=*/r[0], /*data=*/0x2000000007c0ul,
            /*len=*/0x45cul);
    break;
  case 4:
    syscall(__NR_fallocate, /*fd=*/r[1], /*mode=*/0ul, /*off=*/0ul,
            /*len=*/0x1000f4ul);
    break;
  case 5:
    NONFAILING(memcpy((void*)0x200000000380, "/dev/loop", 9));
    NONFAILING(*(uint8_t*)0x200000000389 = 0x30);
    NONFAILING(*(uint8_t*)0x20000000038a = 0);
    NONFAILING(memcpy((void*)0x200000000140, "./bus\000", 6));
    syscall(__NR_mount, /*src=*/0x200000000380ul, /*dst=*/0x200000000140ul,
            /*type=*/0ul, /*flags=MS_BIND*/ 0x1000ul, /*data=*/0ul);
    break;
  case 6:
    NONFAILING(memcpy((void*)0x200000000100, "./bus\000", 6));
    res = syscall(__NR_open, /*file=*/0x200000000100ul,
                  /*flags=O_SYNC|O_NOCTTY|O_NOATIME|O_RDWR|0x3c*/ 0x14113eul,
                  /*mode=*/0ul);
    if (res != -1)
      r[2] = res;
    break;
  case 7:
    NONFAILING(memcpy((void*)0x2000000002c0, "/dev/hwrng\000", 11));
    res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                  /*file=*/0x2000000002c0ul, /*flags=*/0, /*mode=*/0);
    if (res != -1)
      r[3] = res;
    break;
  case 8:
    NONFAILING(*(uint64_t*)0x200000000240 = 0x200000033a80);
    NONFAILING(*(uint64_t*)0x200000000248 = 0xfffffd6e);
    syscall(__NR_preadv, /*fd=*/r[3], /*vec=*/0x200000000240ul, /*vlen=*/1ul,
            /*off_low=*/0, /*off_high=*/0);
    break;
  case 9:
    NONFAILING(memcpy((void*)0x200000000080, "#! ", 3));
    NONFAILING(*(uint8_t*)0x200000000083 = 0xa);
    syscall(__NR_write, /*fd=*/r[2], /*data=*/0x200000000080ul,
            /*len=*/0x208e24bul);
    break;
  case 10:
    syscall(__NR_fallocate, /*fd=*/r[0],
            /*mode=FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE*/ 3ul, /*off=*/0ul,
            /*len=*/0x1a00ul);
    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;
  install_segv_handler();
  use_temporary_dir();
  loop();
  return 0;
}