// 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 <sched.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/resource.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/capability.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 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;
}

#define MAX_FDS 30

//% 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 setup_gadgetfs();
static void setup_binderfs();
static void setup_fusectl();
static void sandbox_common_mount_tmpfs(void)
{
  write_file("/proc/sys/fs/mount-max", "100000");
  if (mkdir("./syz-tmp", 0777))
    exit(1);
  if (mount("", "./syz-tmp", "tmpfs", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot", 0777))
    exit(1);
  if (mkdir("./syz-tmp/newroot/dev", 0700))
    exit(1);
  unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE;
  if (mount("/dev", "./syz-tmp/newroot/dev", NULL, bind_mount_flags, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/proc", 0700))
    exit(1);
  if (mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/selinux", 0700))
    exit(1);
  const char* selinux_path = "./syz-tmp/newroot/selinux";
  if (mount("/selinux", selinux_path, NULL, bind_mount_flags, NULL)) {
    if (errno != ENOENT)
      exit(1);
    if (mount("/sys/fs/selinux", selinux_path, NULL, bind_mount_flags, NULL) &&
        errno != ENOENT)
      exit(1);
  }
  if (mkdir("./syz-tmp/newroot/sys", 0700))
    exit(1);
  if (mount("/sys", "./syz-tmp/newroot/sys", 0, bind_mount_flags, NULL))
    exit(1);
  if (mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/proc/sys/fs/binfmt_misc",
            "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, bind_mount_flags,
            NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/newroot/syz-inputs", 0700))
    exit(1);
  if (mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL,
            bind_mount_flags | MS_RDONLY, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/pivot", 0777))
    exit(1);
  if (syscall(SYS_pivot_root, "./syz-tmp", "./syz-tmp/pivot")) {
    if (chdir("./syz-tmp"))
      exit(1);
  } else {
    if (chdir("/"))
      exit(1);
    if (umount2("./pivot", MNT_DETACH))
      exit(1);
  }
  if (chroot("./newroot"))
    exit(1);
  if (chdir("/"))
    exit(1);
  setup_gadgetfs();
  setup_binderfs();
  setup_fusectl();
}

static void setup_gadgetfs()
{
  if (mkdir("/dev/gadgetfs", 0777)) {
  }
  if (mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL)) {
  }
}

static void setup_fusectl()
{
  if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) {
  }
}

static void setup_binderfs()
{
  if (mkdir("/dev/binderfs", 0777)) {
  }
  if (mount("binder", "/dev/binderfs", "binder", 0, NULL)) {
  }
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  if (getppid() == 1)
    exit(1);
  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = (200 << 20);
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 32 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 136 << 20;
  setrlimit(RLIMIT_FSIZE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_STACK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 128 << 20;
  setrlimit(RLIMIT_CORE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 256;
  setrlimit(RLIMIT_NOFILE, &rlim);
  if (unshare(CLONE_NEWNS)) {
  }
  if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(0x02000000)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
  typedef struct {
    const char* name;
    const char* value;
  } sysctl_t;
  static const sysctl_t sysctls[] = {
      {"/proc/sys/kernel/shmmax", "16777216"},
      {"/proc/sys/kernel/shmall", "536870912"},
      {"/proc/sys/kernel/shmmni", "1024"},
      {"/proc/sys/kernel/msgmax", "8192"},
      {"/proc/sys/kernel/msgmni", "1024"},
      {"/proc/sys/kernel/msgmnb", "1024"},
      {"/proc/sys/kernel/sem", "1024 1048576 500 1024"},
  };
  unsigned i;
  for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++)
    write_file(sysctls[i].name, sysctls[i].value);
}

static int wait_for_loop(int pid)
{
  if (pid < 0)
    exit(1);
  int status = 0;
  while (waitpid(-1, &status, __WALL) != pid) {
  }
  return WEXITSTATUS(status);
}

static void drop_caps(void)
{
  struct __user_cap_header_struct cap_hdr = {};
  struct __user_cap_data_struct cap_data[2] = {};
  cap_hdr.version = _LINUX_CAPABILITY_VERSION_3;
  cap_hdr.pid = getpid();
  if (syscall(SYS_capget, &cap_hdr, &cap_data))
    exit(1);
  const int drop = (1 << CAP_SYS_PTRACE) | (1 << CAP_SYS_NICE);
  cap_data[0].effective &= ~drop;
  cap_data[0].permitted &= ~drop;
  cap_data[0].inheritable &= ~drop;
  if (syscall(SYS_capset, &cap_hdr, &cap_data))
    exit(1);
}

static int do_sandbox_none(void)
{
  if (unshare(CLONE_NEWPID)) {
  }
  int pid = fork();
  if (pid != 0)
    return wait_for_loop(pid);
  sandbox_common();
  drop_caps();
  if (unshare(CLONE_NEWNET)) {
  }
  write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535");
  sandbox_common_mount_tmpfs();
  loop();
  exit(1);
}

#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 close_fds()
{
  for (int fd = 3; fd < MAX_FDS; fd++)
    close(fd);
}

static const char* setup_usb()
{
  if (chmod("/dev/raw-gadget", 0666))
    return "failed to chmod /dev/raw-gadget";
  return NULL;
}

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();
      close_fds();
      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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  NONFAILING(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;
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xaf01, /*arg=*/0ul);
  NONFAILING(*(uint32_t*)0x200000000300 = 1);
  NONFAILING(*(uint32_t*)0x200000000304 = 0);
  NONFAILING(*(uint64_t*)0x200000000308 = 0);
  NONFAILING(*(uint64_t*)0x200000000310 = 0x200000000480);
  NONFAILING(*(uint64_t*)0x200000000318 = 0);
  NONFAILING(*(uint64_t*)0x200000000320 = 0);
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4028af11,
          /*arg=*/0x200000000300ul);
  NONFAILING(*(uint32_t*)0x200000003380 = 0);
  NONFAILING(*(uint32_t*)0x200000003384 = 0);
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4008af03,
          /*arg=*/0x200000003380ul);
  res = syscall(__NR_eventfd2, /*initval=*/0x76, /*flags=EFD_SEMAPHORE*/ 1ul);
  if (res != -1)
    r[1] = res;
  NONFAILING(*(uint32_t*)0x2000000001c0 = 0);
  NONFAILING(*(uint32_t*)0x2000000001c4 = r[1]);
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4008af22,
          /*arg=*/0x2000000001c0ul);
  NONFAILING(*(uint32_t*)0x200000000240 = 0);
  NONFAILING(*(uint32_t*)0x200000000244 = 0);
  NONFAILING(*(uint64_t*)0x200000000248 = 0);
  NONFAILING(*(uint64_t*)0x200000000250 = 0x200000000600);
  NONFAILING(*(uint64_t*)0x200000000258 = 0);
  NONFAILING(*(uint64_t*)0x200000000260 = 0x1000);
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4028af11,
          /*arg=*/0x200000000240ul);
  NONFAILING(*(uint32_t*)0x200000000000 = 0);
  NONFAILING(*(uint32_t*)0x200000000004 = r[1]);
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4008af20,
          /*arg=*/0x200000000000ul);
  NONFAILING(*(uint32_t*)0x200000000140 = 1);
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4004af61,
          /*arg=*/0x200000000140ul);
  NONFAILING(memcpy((void*)0x200000000080, "ext4\000", 5));
  NONFAILING(memcpy((void*)0x2000000000c0, "./file0\000", 8));
  NONFAILING(memcpy((void*)0x2000000003c0, "dioread_lock", 12));
  NONFAILING(*(uint8_t*)0x2000000003cc = 0x2c);
  NONFAILING(memcpy((void*)0x2000000003cd, "auto_da_alloc", 13));
  NONFAILING(*(uint8_t*)0x2000000003da = 0x2c);
  NONFAILING(memcpy((void*)0x2000000003db, "nojournal_checksum", 18));
  NONFAILING(*(uint8_t*)0x2000000003ed = 0x2c);
  NONFAILING(memcpy((void*)0x2000000003ee, "grpquota", 8));
  NONFAILING(*(uint8_t*)0x2000000003f6 = 0x2c);
  NONFAILING(memcpy((void*)0x2000000003f7, "auto_da_alloc", 13));
  NONFAILING(*(uint8_t*)0x200000000404 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000405, "noquota", 7));
  NONFAILING(*(uint8_t*)0x20000000040c = 0x2c);
  NONFAILING(memcpy((void*)0x20000000040d, "data_err=abort", 14));
  NONFAILING(*(uint8_t*)0x20000000041b = 0x2c);
  NONFAILING(memcpy((void*)0x20000000041c, "grpid", 5));
  NONFAILING(*(uint8_t*)0x200000000421 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000422, "grpjquota=", 10));
  NONFAILING(*(uint8_t*)0x20000000042c = 0x2c);
  NONFAILING(memcpy((void*)0x20000000042d, "nouid32", 7));
  NONFAILING(*(uint8_t*)0x200000000434 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000435, "grpid", 5));
  NONFAILING(*(uint8_t*)0x20000000043a = 0x2c);
  NONFAILING(*(uint8_t*)0x20000000043b = 0);
  NONFAILING(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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\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\xdc\x4d\x00\x00\x7a\x6d\xa8\xf5\xec\x73\x9f\xb4\x9c\x3d\xdc"
      "\xdd\xc6\x00\x00\x3d\xd1\xe6\xfc\x0f\x00\x7c\x87\x39\xff\x03\xc0\xf3\xe7"
      "\x09\xe7\xff\xdd\xff\x06\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x07\x75\xe5\xf2\xe5\x74\xda\xfc\x6a\x7d\x2d\x9f\xe6\x67"
      "\x6f\xad\x2c\xcf\x97\x6e\x9d\x9f\x2d\x94\xe7\x73\x0b\xcb\xf9\x5c\xbe\xb4"
      "\x74\x33\x37\x57\x2a\xcd\x15\x0b\xb9\x7c\x69\xa1\xed\x1b\xdd\xa9\xbd\x14"
      "\x4b\xa5\x9b\x53\xb1\xb8\x7c\x7b\xa2\x52\x28\x57\x26\xca\x2b\xab\x57\x17"
      "\x4a\xcb\x8b\x95\xab\x37\x16\x66\xe6\x0a\x57\x0b\xfd\x3d\x8b\x0c\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x3a\x57\x5e\x59\x9d\x9f\x29"
      "\x16\x0b\x4b\x5d\x4c\x0c\x74\xbf\x8a\x67\x36\x31\xff\x61\xad\x1f\x4e\x4a"
      "\x7b\x0e\x97\xe8\x8f\x13\xd1\x8c\x03\x24\x92\x43\x6e\xf9\xb8\x53\xeb\xbf"
      "\xea\x9c\x6c\xfd\xa0\x3a\x01\x71\x1d\x3e\x11\x03\xdb\xa3\xc4\x70\xef\x07"
      "\x26\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\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));
  NONFAILING(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));
  NONFAILING(
      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;
  NONFAILING(memcpy((void*)0x200000000200, "#! ", 3));
  NONFAILING(memcpy((void*)0x200000000203, "./file1", 7));
  NONFAILING(*(uint8_t*)0x20000000020a = 0xa);
  syscall(__NR_write, /*fd=*/r[2], /*data=*/0x200000000200ul, /*len=*/0xbul);
  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);
  NONFAILING(*(uint32_t*)0x200000000280 = 2);
  NONFAILING(*(uint32_t*)0x200000000284 = 0);
  NONFAILING(*(uint64_t*)0x200000000288 = 0);
  NONFAILING(*(uint32_t*)0x200000000290 = 0);
  NONFAILING(*(uint32_t*)0x200000000294 = 0x20003);
  NONFAILING(*(uint32_t*)0x200000000298 = 0x10020f5b);
  NONFAILING(*(uint32_t*)0x20000000029c = 0);
  NONFAILING(*(uint8_t*)0x2000000002a0 = 0);
  NONFAILING(*(uint8_t*)0x2000000002a1 = 0);
  NONFAILING(*(uint8_t*)0x2000000002a2 = 0);
  NONFAILING(memset((void*)0x2000000002a3, 0, 4));
  NONFAILING(*(uint8_t*)0x2000000002a7 = 0);
  NONFAILING(*(uint8_t*)0x2000000002a8 = 0);
  NONFAILING(*(uint8_t*)0x2000000002a9 = 0);
  NONFAILING(*(uint8_t*)0x2000000002aa = 0);
  NONFAILING(memset((void*)0x2000000002ab, 0, 4));
  NONFAILING(*(uint8_t*)0x2000000002af = 0);
  NONFAILING(*(uint8_t*)0x2000000002b0 = 0);
  NONFAILING(*(uint8_t*)0x2000000002b1 = 0);
  NONFAILING(*(uint8_t*)0x2000000002b2 = 0);
  NONFAILING(memset((void*)0x2000000002b3, 0, 4));
  NONFAILING(*(uint8_t*)0x2000000002b7 = 0);
  NONFAILING(*(uint8_t*)0x2000000002b8 = 0);
  NONFAILING(*(uint8_t*)0x2000000002b9 = 0x35);
  NONFAILING(*(uint8_t*)0x2000000002ba = 0);
  NONFAILING(memset((void*)0x2000000002bb, 0, 4));
  NONFAILING(*(uint8_t*)0x2000000002bf = 0);
  NONFAILING(*(uint8_t*)0x2000000002c0 = 0x20);
  NONFAILING(*(uint8_t*)0x2000000002c1 = 0);
  NONFAILING(*(uint8_t*)0x2000000002c2 = 0);
  NONFAILING(memset((void*)0x2000000002c3, 0, 4));
  NONFAILING(*(uint8_t*)0x2000000002c7 = 0);
  NONFAILING(*(uint8_t*)0x2000000002c8 = 0);
  NONFAILING(*(uint8_t*)0x2000000002c9 = 0);
  NONFAILING(*(uint8_t*)0x2000000002ca = 0);
  NONFAILING(memset((void*)0x2000000002cb, 0, 4));
  NONFAILING(*(uint8_t*)0x2000000002cf = 0);
  NONFAILING(*(uint8_t*)0x2000000002d0 = 0);
  NONFAILING(*(uint8_t*)0x2000000002d1 = 0);
  NONFAILING(*(uint8_t*)0x2000000002d2 = 0);
  NONFAILING(memset((void*)0x2000000002d3, 0, 4));
  NONFAILING(*(uint8_t*)0x2000000002d7 = 0);
  NONFAILING(*(uint8_t*)0x2000000002d8 = 1);
  NONFAILING(*(uint8_t*)0x2000000002d9 = 6);
  NONFAILING(*(uint8_t*)0x2000000002da = 0);
  NONFAILING(memset((void*)0x2000000002db, 0, 4));
  NONFAILING(*(uint8_t*)0x2000000002df = 0);
  NONFAILING(*(uint8_t*)0x2000000002e0 = 0);
  NONFAILING(*(uint8_t*)0x2000000002e1 = 1);
  NONFAILING(*(uint8_t*)0x2000000002e2 = 1);
  NONFAILING(memset((void*)0x2000000002e3, 0, 4));
  NONFAILING(*(uint8_t*)0x2000000002e7 = 0);
  NONFAILING(*(uint8_t*)0x2000000002e8 = 0xf);
  NONFAILING(*(uint8_t*)0x2000000002e9 = 6);
  NONFAILING(*(uint8_t*)0x2000000002ea = 2);
  NONFAILING(memset((void*)0x2000000002eb, 0, 4));
  NONFAILING(*(uint8_t*)0x2000000002ef = 0);
  NONFAILING(*(uint8_t*)0x2000000002f0 = 4);
  NONFAILING(*(uint8_t*)0x2000000002f1 = 0);
  NONFAILING(*(uint8_t*)0x2000000002f2 = 0xfe);
  NONFAILING(memset((void*)0x2000000002f3, 0, 4));
  NONFAILING(*(uint8_t*)0x2000000002f7 = 0);
  NONFAILING(*(uint8_t*)0x2000000002f8 = 0);
  NONFAILING(*(uint8_t*)0x2000000002f9 = 0);
  NONFAILING(*(uint8_t*)0x2000000002fa = 0);
  NONFAILING(memset((void*)0x2000000002fb, 0, 4));
  NONFAILING(*(uint8_t*)0x2000000002ff = 0);
  NONFAILING(*(uint8_t*)0x200000000300 = 0xfe);
  NONFAILING(*(uint8_t*)0x200000000301 = 0);
  NONFAILING(*(uint8_t*)0x200000000302 = 0);
  NONFAILING(memset((void*)0x200000000303, 0, 4));
  NONFAILING(*(uint8_t*)0x200000000307 = 0);
  NONFAILING(*(uint8_t*)0x200000000308 = 0);
  NONFAILING(*(uint8_t*)0x200000000309 = 0);
  NONFAILING(*(uint8_t*)0x20000000030a = 2);
  NONFAILING(memset((void*)0x20000000030b, 0, 4));
  NONFAILING(*(uint8_t*)0x20000000030f = 0);
  NONFAILING(*(uint8_t*)0x200000000310 = 7);
  NONFAILING(*(uint8_t*)0x200000000311 = 0);
  NONFAILING(*(uint8_t*)0x200000000312 = 0);
  NONFAILING(memset((void*)0x200000000313, 0, 4));
  NONFAILING(*(uint8_t*)0x200000000317 = 0x39);
  NONFAILING(*(uint8_t*)0x200000000318 = 0);
  NONFAILING(*(uint8_t*)0x200000000319 = 0);
  NONFAILING(*(uint8_t*)0x20000000031a = 0);
  NONFAILING(memset((void*)0x20000000031b, 0, 4));
  NONFAILING(*(uint8_t*)0x20000000031f = 8);
  NONFAILING(*(uint8_t*)0x200000000320 = 0);
  NONFAILING(*(uint8_t*)0x200000000321 = 0);
  NONFAILING(*(uint8_t*)0x200000000322 = 0);
  NONFAILING(memset((void*)0x200000000323, 0, 4));
  NONFAILING(*(uint8_t*)0x200000000327 = 0xfe);
  NONFAILING(*(uint8_t*)0x200000000328 = 3);
  NONFAILING(*(uint8_t*)0x200000000329 = 0);
  NONFAILING(*(uint8_t*)0x20000000032a = 0xfa);
  NONFAILING(memset((void*)0x20000000032b, 0, 4));
  NONFAILING(*(uint8_t*)0x20000000032f = 0);
  NONFAILING(*(uint8_t*)0x200000000330 = 0);
  NONFAILING(*(uint8_t*)0x200000000331 = 2);
  NONFAILING(*(uint8_t*)0x200000000332 = 0);
  NONFAILING(memset((void*)0x200000000333, 0, 4));
  NONFAILING(*(uint8_t*)0x200000000337 = 0);
  NONFAILING(*(uint8_t*)0x200000000338 = 0);
  NONFAILING(*(uint8_t*)0x200000000339 = 0);
  NONFAILING(*(uint8_t*)0x20000000033a = 0);
  NONFAILING(memset((void*)0x20000000033b, 0, 4));
  NONFAILING(*(uint8_t*)0x20000000033f = 0);
  NONFAILING(*(uint8_t*)0x200000000340 = 0);
  NONFAILING(*(uint8_t*)0x200000000341 = 0);
  NONFAILING(*(uint8_t*)0x200000000342 = 0);
  NONFAILING(memset((void*)0x200000000343, 0, 4));
  NONFAILING(*(uint8_t*)0x200000000347 = 1);
  NONFAILING(*(uint8_t*)0x200000000348 = 0);
  NONFAILING(*(uint8_t*)0x200000000349 = 0);
  NONFAILING(*(uint8_t*)0x20000000034a = 0);
  NONFAILING(memset((void*)0x20000000034b, 0, 4));
  NONFAILING(*(uint8_t*)0x20000000034f = 0);
  NONFAILING(*(uint8_t*)0x200000000350 = 0xfe);
  NONFAILING(*(uint8_t*)0x200000000351 = 0);
  NONFAILING(*(uint8_t*)0x200000000352 = 0);
  NONFAILING(memset((void*)0x200000000353, 0, 4));
  NONFAILING(*(uint8_t*)0x200000000357 = 0);
  NONFAILING(*(uint8_t*)0x200000000358 = 0);
  NONFAILING(*(uint8_t*)0x200000000359 = 0);
  NONFAILING(*(uint8_t*)0x20000000035a = 0);
  NONFAILING(memset((void*)0x20000000035b, 0, 4));
  NONFAILING(*(uint8_t*)0x20000000035f = 0);
  syscall(__NR_ioctl, /*fd=*/(intptr_t)-1, /*cmd=*/0x8208ae63,
          /*arg=*/0x200000000280ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  if ((reason = setup_usb()))
    printf("the reproducer may not work as expected: USB injection setup "
           "failed: %s\n",
           reason);
  install_segv_handler();
  use_temporary_dir();
  do_sandbox_none();
  return 0;
}