// https://syzkaller.appspot.com/bug?id=007e4773adba81108370d2ac3043a362de94c8a4
// 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");
  } else if (strncmp(fs, "gfs2", 4) == 0 &&
             (strstr(opts, "errors=panic") || strstr(opts, "debug"))) {
    strcat(opts, ",errors=withdraw");
  }
  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 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[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  syz_mount_image$ext4 arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {65 78 74 34 00} (length 0x5)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x3000046 (8 bytes)
  //    opts: ptr[in, fs_options[ext4_options]] {
  //      fs_options[ext4_options] {
  //        elems: array[fs_opt_elem[ext4_options]] {
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              delalloc: buffer: {64 65 6c 61 6c 6c 6f 63} (length 0x8)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              data_err_abort: buffer: {64 61 74 61 5f 65 72 72 3d 61 62 6f
  //              72 74} (length 0xe)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              barrier_val: fs_opt["barrier", fmt[hex, int32]] {
  //                name: buffer: {62 61 72 72 69 65 72} (length 0x7)
  //                eq: const = 0x3d (1 bytes)
  //                val: int32 = 0x2 (18 bytes)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              dioread_lock: buffer: {64 69 6f 72 65 61 64 5f 6c 6f 63 6b}
  //              (length 0xc)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              data_err_ignore: buffer: {64 61 74 61 5f 65 72 72 3d 69 67 6e
  //              6f 72 65} (length 0xf)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              max_dir_size_kb: fs_opt["max_dir_size_kb", fmt[hex, int32]] {
  //                name: buffer: {6d 61 78 5f 64 69 72 5f 73 69 7a 65 5f 6b 62}
  //                (length 0xf) eq: const = 0x3d (1 bytes) val: int32 =
  //                0x4007b1 (18 bytes)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              data_err_ignore: buffer: {64 61 74 61 5f 65 72 72 3d 69 67 6e
  //              6f 72 65} (length 0xf)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              grpquota: buffer: {67 72 70 71 75 6f 74 61} (length 0x8)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              nobh: buffer: {6e 6f 62 68} (length 0x4)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              user_xattr: buffer: {75 73 65 72 5f 78 61 74 74 72} (length
  //              0xa)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              bh: buffer: {62 68} (length 0x2)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              dioread_nolock: buffer: {64 69 6f 72 65 61 64 5f 6e 6f 6c 6f
  //              63 6b} (length 0xe)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //    chdir: int8 = 0x1 (1 bytes)
  //    size: len = 0x553 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x553)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000040, "ext4\000", 5));
  NONFAILING(memcpy((void*)0x200000000000, "./file1\000", 8));
  NONFAILING(memcpy((void*)0x200000000380, "delalloc", 8));
  NONFAILING(*(uint8_t*)0x200000000388 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000389, "data_err=abort", 14));
  NONFAILING(*(uint8_t*)0x200000000397 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000398, "barrier", 7));
  NONFAILING(*(uint8_t*)0x20000000039f = 0x3d);
  NONFAILING(sprintf((char*)0x2000000003a0, "0x%016llx", (long long)2));
  NONFAILING(*(uint8_t*)0x2000000003b2 = 0x2c);
  NONFAILING(memcpy((void*)0x2000000003b3, "dioread_lock", 12));
  NONFAILING(*(uint8_t*)0x2000000003bf = 0x2c);
  NONFAILING(memcpy((void*)0x2000000003c0, "data_err=ignore", 15));
  NONFAILING(*(uint8_t*)0x2000000003cf = 0x2c);
  NONFAILING(memcpy((void*)0x2000000003d0, "max_dir_size_kb", 15));
  NONFAILING(*(uint8_t*)0x2000000003df = 0x3d);
  NONFAILING(sprintf((char*)0x2000000003e0, "0x%016llx", (long long)0x4007b1));
  NONFAILING(*(uint8_t*)0x2000000003f2 = 0x2c);
  NONFAILING(memcpy((void*)0x2000000003f3, "data_err=ignore", 15));
  NONFAILING(*(uint8_t*)0x200000000402 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000403, "grpquota", 8));
  NONFAILING(*(uint8_t*)0x20000000040b = 0x2c);
  NONFAILING(memcpy((void*)0x20000000040c, "nobh", 4));
  NONFAILING(*(uint8_t*)0x200000000410 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000411, "user_xattr", 10));
  NONFAILING(*(uint8_t*)0x20000000041b = 0x2c);
  NONFAILING(memcpy((void*)0x20000000041c, "bh", 2));
  NONFAILING(*(uint8_t*)0x20000000041e = 0x2c);
  NONFAILING(memcpy((void*)0x20000000041f, "dioread_nolock", 14));
  NONFAILING(*(uint8_t*)0x20000000042d = 0x2c);
  NONFAILING(*(uint8_t*)0x20000000042e = 0);
  NONFAILING(memcpy(
      (void*)0x200000000a40,
      "\x78\x9c\xec\xdd\xdf\x6b\x5b\x55\x1c\x00\xf0\xef\x4d\xdb\xfd\xd6\x75\x30"
      "\x86\x8a\x48\x61\x0f\x4e\xe6\xd2\xb5\xf5\xc7\x04\x1f\xe6\xa3\xe8\x70\xa0"
      "\xef\x33\xb4\x77\x65\x34\x59\x46\x93\x8e\xb5\x0e\xdc\x1e\xdc\x8b\x2f\x32"
      "\x04\x11\x07\xe2\xbb\xbe\xfb\x38\xfc\x07\xfc\x2b\x06\x3a\x18\x32\x8a\x3e"
      "\xf8\x12\xb9\xe9\x4d\x97\xad\x49\x9b\x75\xd9\xd2\x99\xcf\x07\x6e\x39\x27"
      "\xf7\x26\xe7\x7e\x73\xef\xf7\xf4\xdc\x9c\x1b\x12\xc0\xd0\x9a\xc8\xfe\x14"
      "\x22\x5e\x8e\x88\x6f\x92\x88\x83\x11\x91\xe4\xeb\x46\x23\x5f\x39\xb1\xb6"
      "\xdd\xea\xfd\xab\xb3\xd9\x92\x44\xa3\xf1\xe9\x5f\x49\x73\xbb\xac\xde\x7a"
      "\xad\xd6\xf3\xf6\xe7\x95\x97\x22\xe2\xb7\xaf\x22\x8e\x17\x36\xb6\x5b\x5b"
      "\x5e\x59\x28\x95\xcb\xe9\x62\x5e\x9f\xac\x57\x2e\x4d\xd6\x96\x57\x4e\x5c"
      "\xa8\x94\xe6\xd3\xf9\xf4\xe2\xf4\xcc\xcc\xa9\xb7\x67\xa6\xdf\x7b\xf7\x9d"
      "\xbe\xc5\xfa\xc6\xd9\x7f\xbe\xff\xe4\xf6\x87\xa7\xbe\x3e\xba\xfa\xdd\x2f"
      "\x77\x0f\xdd\x4c\xe2\x74\x1c\xc8\xd7\xb5\xc7\xf1\x04\xae\xb5\x57\x26\x62"
      "\x22\x7f\x4f\xc6\xe2\xf4\x23\x1b\x4e\xf5\xa1\xb1\x9d\x24\x19\xf4\x0e\xb0"
      "\x2d\x23\x79\x9e\x8f\x45\xd6\x07\x1c\x8c\x91\x3c\xeb\x81\xff\xbf\x2f\x23"
      "\xa2\x01\x0c\xa9\x44\xfe\xc3\x90\x6a\x8d\x03\x5a\xd7\xf6\x7d\xba\x0e\x7e"
      "\x6e\xdc\xfb\x60\xed\x02\x68\x63\xfc\xa3\x6b\x9f\x8d\xc4\x9e\xe6\xb5\xd1"
      "\xbe\xd5\xe4\xa1\x2b\xa3\xec\x7a\x77\xbc\x0f\xed\x67\x6d\xfc\xfa\xe7\xad"
      "\x9b\xd9\x12\xfd\xfb\x1c\x02\x60\x4b\xd7\xae\x47\xc4\xc9\xd1\xd1\x8d\xfd"
      "\x5f\x92\xf7\x7f\xdb\x77\xb2\x87\x6d\x1e\x6d\x43\xff\x07\xcf\xce\xed\x6c"
      "\xfc\xf3\x66\xa7\xf1\x4f\x61\x7d\xfc\x13\x1d\xc6\x3f\xfb\x3b\xe4\xee\x76"
      "\x6c\x9d\xff\x85\xbb\x7d\x68\xa6\xab\x6c\xfc\xf7\x7e\xc7\xf1\xef\xfa\xa4"
      "\xd5\xf8\x48\x5e\x7b\xa1\x39\xe6\x1b\x4b\xce\x5f\x28\xa7\x59\xdf\xf6\x62"
      "\x44\x1c\x8b\xb1\xdd\x59\x7d\xb3\xf9\x9c\x53\xab\x77\x1a\xdd\xd6\xb5\x8f"
      "\xff\xb2\x25\x6b\xbf\x35\x16\xcc\xf7\xe3\xee\xe8\xee\x87\x9f\x33\x57\xaa"
      "\x97\x9e\x24\xe6\x76\xf7\xae\x47\xbc\xd2\x71\xfc\x9b\xac\x1f\xff\xa4\xc3"
      "\xf1\xcf\xde\x8f\xb3\x3d\xb6\x71\x24\xbd\xf5\x5a\xb7\x75\x5b\xc7\xff\x74"
      "\x35\x7e\x8a\x78\xbd\xe3\xf1\x7f\x30\xa3\x95\x6c\x3e\x3f\x39\xd9\x3c\x1f"
      "\x26\x5b\x67\xc5\x46\x7f\xdf\x38\xf2\x7b\xb7\xf6\x07\x1d\x7f\x76\xfc\xf7"
      "\x6d\x1e\xff\x78\xd2\x3e\x5f\x5b\x7b\xfc\x36\x7e\xdc\xf3\x6f\xda\x6d\xdd"
      "\x43\xf1\x47\xef\xe7\xff\xae\xe4\xb3\x66\x79\x57\xfe\xd8\x95\x52\xbd\xbe"
      "\x38\x15\xb1\x2b\xf9\x78\xe3\xe3\xd3\x0f\x9e\xdb\xaa\xb7\xb6\xcf\xe2\x3f"
      "\x76\x74\xf3\xfe\xaf\xd3\xf9\xbf\x37\x22\x3e\xef\x31\xfe\x1b\x87\x7f\x7e"
      "\xb5\xa7\xf8\x07\x74\xfc\xe7\x1e\xeb\xf8\x3f\x7e\xe1\xce\x47\x5f\xfc\xd0"
      "\xad\xfd\xde\xfa\xbf\xb7\x9a\xa5\x63\xf9\x23\xbd\xf4\x7f\xbd\xee\xe0\x93"
      "\xbc\x77\x00\x00\x00\x00\x00\x00\xb0\xd3\x14\x22\xe2\x40\x24\x85\xe2\x7a"
      "\xb9\x50\x28\x16\xd7\xee\xef\x38\x1c\xfb\x0a\xe5\x6a\xad\x7e\xfc\x7c\x75"
      "\xe9\xe2\x5c\x34\xbf\x2b\x3b\x1e\x63\x85\xd6\x4c\xf7\xc1\xb6\xfb\x21\xa6"
      "\xf2\xfb\x61\x5b\xf5\xe9\x47\xea\x33\x11\x71\x28\x22\xbe\x1d\xd9\xdb\xac"
      "\x17\x67\xab\xe5\xb9\x41\x07\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x3b\xc4\xfe\x2e\xdf\xff\xcf\xfc\x31\x32\xe8\xbd\x03"
      "\x9e\x3a\x3f\xf9\x0d\xc3\x6b\xcb\xfc\xef\xc7\x2f\x3d\x01\x3b\x92\xff\xff"
      "\x30\xbc\xe4\x3f\x0c\x2f\xf9\x0f\xc3\x4b\xfe\xc3\xf0\x92\xff\x30\xbc\xe4"
      "\x3f\x0c\x2f\xf9\x0f\xc3\x4b\xfe\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x40\x5f\x9d\x3d\x73\x26\x5b"
      "\x1a\xab\xf7\xaf\xce\x66\xf5\xb9\xcb\xcb\x4b\x0b\xd5\xcb\x27\xe6\xd2\xda"
      "\x42\xb1\xb2\x34\x5b\x9c\xad\x2e\x5e\x2a\xce\x57\xab\xf3\xe5\xb4\x38\x5b"
      "\xad\x6c\xf5\x7a\xe5\x6a\xf5\xd2\xd4\x74\x2c\x5d\x99\xac\xa7\xb5\xfa\x64"
      "\x6d\x79\xe5\x5c\xa5\xba\x74\xb1\x7e\xee\x42\xa5\x34\x9f\x9e\x4b\xc7\x9e"
      "\x49\x54\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf0"
      "\x7c\xa9\x2d\xaf\x2c\x94\xca\xe5\x74\x51\x41\x61\x5b\x85\xd1\x9d\xb1\x1b"
      "\x0a\x7d\x2e\x0c\xba\x67\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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\x07\xfe\x0b\x00\x00\xff\xff\xe8\x06\x37\xb1",
      1363));
  NONFAILING(syz_mount_image(
      /*fs=*/0x200000000040, /*dir=*/0x200000000000,
      /*flags=MS_LAZYTIME|MS_STRICTATIME|MS_NOSUID|MS_NODEV|MS_MANDLOCK*/
      0x3000046, /*opts=*/0x200000000380, /*chdir=*/1, /*size=*/0x553,
      /*img=*/0x200000000a40));
  //  mount$incfs arguments: [
  //    src: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    dst: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    type: ptr[in, buffer] {
  //      buffer: {69 6e 63 72 65 6d 65 6e 74 61 6c 2d 66 73 00} (length 0xf)
  //    }
  //    flags: mount_flags = 0x0 (8 bytes)
  //    opts: nil
  //  ]
  NONFAILING(memcpy((void*)0x200000000140, "./file0\000", 8));
  NONFAILING(memcpy((void*)0x200000000100, "./file0\000", 8));
  NONFAILING(memcpy((void*)0x200000000040, "incremental-fs\000", 15));
  syscall(__NR_mount, /*src=*/0x200000000140ul, /*dst=*/0x200000000100ul,
          /*type=*/0x200000000040ul, /*flags=*/0ul, /*opts=*/0ul);
  //  creat arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    mode: open_mode = 0x0 (8 bytes)
  //  ]
  //  returns fd
  NONFAILING(memcpy((void*)0x200000000040, "./bus\000", 6));
  syscall(__NR_creat, /*file=*/0x200000000040ul, /*mode=*/0ul);
  //  mount arguments: [
  //    src: ptr[in, blockdev_filename] {
  //      union blockdev_filename {
  //        loop: loop_filename {
  //          prefix: buffer: {2f 64 65 76 2f 6c 6f 6f 70} (length 0x9)
  //          id: proc = 0x0 (1 bytes)
  //          z: const = 0x0 (1 bytes)
  //        }
  //      }
  //    }
  //    dst: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    type: nil
  //    flags: mount_flags = 0x63d014 (8 bytes)
  //    data: nil
  //  ]
  NONFAILING(memcpy((void*)0x200000000380, "/dev/loop", 9));
  NONFAILING(*(uint8_t*)0x200000000389 = 0x30 + procid * 1);
  NONFAILING(*(uint8_t*)0x20000000038a = 0);
  NONFAILING(memcpy((void*)0x200000000180, "./bus\000", 6));
  syscall(
      __NR_mount, /*src=*/0x200000000380ul, /*dst=*/0x200000000180ul,
      /*type=*/0ul,
      /*flags=MS_UNBINDABLE|MS_POSIXACL|MS_REC|MS_SYNCHRONOUS|MS_SILENT|0x601004*/
      0x63d014ul, /*data=*/0ul);
  //  open arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    flags: open_flags = 0x185102 (8 bytes)
  //    mode: open_mode = 0x0 (8 bytes)
  //  ]
  //  returns fd
  NONFAILING(memcpy((void*)0x200000000080, "./bus\000", 6));
  res = syscall(__NR_open, /*file=*/0x200000000080ul,
                /*flags=O_SYNC|O_NOCTTY|O_DIRECT|O_CLOEXEC|O_RDWR*/ 0x185102ul,
                /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  //  mmap arguments: [
  //    addr: VMA[0x800000]
  //    len: len = 0x800000 (8 bytes)
  //    prot: mmap_prot = 0x2 (8 bytes)
  //    flags: mmap_flags = 0x28011 (8 bytes)
  //    fd: fd (resource)
  //    offset: intptr = 0x0 (8 bytes)
  //  ]
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x800000ul,
          /*prot=PROT_WRITE*/ 2ul,
          /*flags=MAP_STACK|MAP_POPULATE|MAP_FIXED|MAP_SHARED*/ 0x28011ul,
          /*fd=*/r[0], /*offset=*/0ul);
  //  write$UHID_INPUT arguments: [
  //    fd: fd_uhid (resource)
  //    data: ptr[in, uhid_req[UHID_INPUT, uhid_input_req]] {
  //      uhid_req[UHID_INPUT, uhid_input_req] {
  //        type: const = 0x8 (4 bytes)
  //        data: uhid_input_req {
  //          data: buffer: {45 5e 99 f0 1d 7d 7e c0 b7 92 64 c1 c8 33 98 e0 8b
  //          17 c1 a5 ce bd 63 f4 25 e6 e9 ba ce 7f 6f 52 a2 8f 77 85 42 e5 1b
  //          13 05 f3 7d 85 57 73 3a 54 87 22 a5 fa dc f5 e0 64 a1 ae 67 35 d8
  //          63 5d 14 65 2e d5 c0 18 b4 46 9e f4 00 38 b0 fc e2 2f 8f 44 db b6
  //          42 76 b4 2a b6 12 03 fd fc 4a 1f 5e 98 1b 0f 90 1e a8 4c 16 28 a7
  //          e8 5e dc 42 93 25 96 a4 8a 76 8f 54 5a 8c 3b a2 0d 0b cc 0f 2a 12
  //          6d 3a 35 19 13 43 dd 27 11 3a ca 34 03 7a 52 50 ac 97 d0 08 f3 28
  //          7f d6 a9 5f 7f fd e1 ad 03 27 9d 24 05 2f 17 14 10 1d 0c dc e8 1d
  //          c6 95 3a 47 29 0c 31 c4 67 dc e8 23 2e dd e1 f5 72 93 89 d2 39 d0
  //          11 55 a9 0b 71 06 95 b1 21 9b db af 54 be 4d b2 90 3d b1 f2 00 f5
  //          72 5d 74 c1 68 12 71 81 da e3 be dc 79 84 0a 9c 4f b9 07 7a d4 4e
  //          f5 33 9d 17 02 02 6e 09 83 ff b1 e0 4b a1 06 30 85 35 62 d3 7e 35
  //          ec 27 24 9b 77 94 c5 d1 6f b4 66 17 39 94 8a ff 20 25 e5 67 64 6e
  //          7a d9 58 06 ac 67 df 08 aa af 0f 60 8f 38 fe 3e 2d 58 fe cf f3 c8
  //          85 a8 ce 59 93 51 85 4d 15 f8 22 03 88 7d 8c f0 5b a8 d9 81 43 c8
  //          f9 23 e7 91 ff a4 75 e8 b2 a2 47 dd 49 66 3d 6a 2a bc 17 45 f8 e8
  //          d2 3b 1e 9f b8 c2 e8 80 5b af da 80 2c e5 dc 84 76 31 72 71 be 13
  //          bf 45 4e 9d 11 73 6f 3e e3 d8 30 41 93 94 85 61 47 f9 5e d8 4e 11
  //          c7 a5 a9 8c aa 2c 43 e0 56 87 58 83 cd 2a 71 97 97 58 db ff 78 5a
  //          bd 0a d1 a4 94 59 e4 94 cb 40 9d 4e fe 0f 6c 92 77 1e e8 39 38 79
  //          9d aa db 2b f9 8c cb df 25 17 cd bd 5b cb ff 91 9e 51 d2 25 c5 b0
  //          d7 f4 55 df bb fb 9e 2a b2 11 1a 17 ae 55 95 94 95 d8 d7 66 c7 cd
  //          62 ef a3 3d bf 1d 74 23 8c 25 7f 47 51 6b 74 ec dc 8e 46 85 e4 61
  //          de 05 79 23 7c ae 86 6d fe 2a f4 56 0a 93 76 29 7a cf 56 c3 9b 96
  //          bd 4c 63 c9 ce 32 24 37 03 42 3b d4 ca 0a 2f b1 1c 01 5e 5b 07 9d
  //          5b 19 20 36 fa 66 3b ab 46 66 57 10 53 3e 16 7b 63 c3 b3 cd bb f9
  //          8f e5 bf 65 e9 87 14 4a 6c 2b 62 51 b7 ef 59 23 8e c9 a1 99 4c c9
  //          66 ea 7e 05 2c 5c e4 07 24 ad f1 4e a1 00 f5 e3 04 b0 e8 a5 77 39
  //          84 bb e9 ea 74 a9 aa b9 b0 06 d3 ff 2a cf 84 8e 4e 18 13 cf a5 13
  //          cf 97 52 f5 a0 c5 13 4d 8a 44 87 33 b8 24 78 63 bb 68 30 a4 7c e8
  //          1c a8 07 42 d5 54 b8 b2 b3 76 0d df 64 0d 89 58 46 84 5d 19 9c 81
  //          70 10 8c 98 90 8b fc 5a 8a 4c 4e ad 5a d7 cf 99 be 82 53 a1 4b fb
  //          59 8b f1 0f 39 f7 c9 56 21 ea c1 03 d3 e1 ea a8 22 b8 3c 64 62 e6
  //          42 8e e6 f8 dd 0d c7 d2 bb a4 04 80 f2 28 36 d4 43 c6 55 f8 3e c0
  //          90 5f c9 98 53 2a b6 73 65 33 f7 96 66 3f f4 1e 82 0c 23 61 f5 54
  //          92 11 10 e1 be 5d 9a f4 7e ea e2 62 40 43 43 c0 b4 28 36 26 1a 71
  //          6f 5e 4c a8 ac 38 b9 0d 2a 46 1f 9c 9a e0 88 ce 43 75 49 d0 86 ec
  //          a6 0b 61 71 c0 ab 0e 98 db 0c 0b 21 2b 6d c3 b0 6d af 78 c8 91 2d
  //          22 d4 57 dc 48 bd 6a 0a b3 96 5f 93 b3 df ba b1 62 6f 2d d0 5b 3a
  //          ee 0b 04 da 6a a8 08 a3 9c 41 04 1f 11 b5 5c fa 3d 44 72 a4 98 5f
  //          6a 22 4d 58 ee 82 03 c0 5d 6d b2 08 d5 7e 93 ee de 51 11 0d d3 6b
  //          cd 66 45 be 26 6d e2 a7 1d 96 0d 81 ce 1d 9b 66 44 e6 bd 94 d7 90
  //          f5 29 4a 0a cf 78 9f 43 b2 1a 83 c8 17 b0 d1 36 90 eb 9a 83 c6 3e
  //          87 55 85 80 63 c6 1b fa 42 0f 37 2d b6 87 a9 19 eb 67 2f 25 c2 2d
  //          cc fc af 22 f9 3d 17 f3 33 5e 30 42 b6 ba 1b ea b5 4d c2 c6 aa df
  //          a1 67 34 0a a5 b3 71 5f 66 d1 47 60 48 b0 8e 58 10 f1 c7 90 d6 18
  //          6b 5f 42 f3 10 35 87 17 fa 8c dc 2a 31 7f 92 6c 81 1b 8f f3 6c 72
  //          7b 4a 48 5a 5b 08 75 20 78 77 ae 41 65 5a 10 7e 0f f3 35 b7 b9 c2
  //          42 83 12 59 84 2c 0e ed e5 42 bd c6 4d f2 a2 e5 f2 ca de 65 1b c5
  //          7e 72 28 3f 23 9b b1 d6 9a 29 80 44 b8 93 43 f8 be 1a ec b4 6d bc
  //          68 5a 3b 3e 26 c3 e3 2d 30 45 e6 01 b2 09 af 08 6c 03 a3 fa d6 09
  //          44 ce 9f 70 27 f4 2d 9c ce fb e2 35 3e 5b bf dd 6e a7 71 69 3c 13
  //          14 b7 02 db 9f 8c c5 ce 5a d0 5e f9 9f 54 da 13 13 9b 83 2d 6b 98
  //          32 61 aa d7 e0 f6 cc 39 54 54 7b 90 2b 51 cf 34 5e 0d f0 31 10 97
  //          be 34 b3 0e 4c a7 13 dc bc 52 0e 52 2f 7c 6a ee e5 b3 10 66 cc c7
  //          98 76 ad ca 6f 55 6c b1 b2 31 00 3e 31 69 99 1a 25 12 93 c6 7c ce
  //          9a 78 bf fe 36 c7 78 b8 ce 91 10 fd ac 3e c5 4b ac 57 d7 93 fe 1f
  //          eb bf 66 9d 69 6a cd ec b5 f6 1f e6 bd 1b c0 50 c3 73 5b a0 a7 cd
  //          0d a7 f4 92 61 d7 1d 6e a8 f7 5c 9d 7d 5d 84 34 72 d1 5c 75 e9 b3
  //          d2 33 b8 7d 75 1b e4 7b ac 72 14 9e 7c 46 c9 79 f3 5a 61 56 63 1e
  //          96 75 e1 f5 36 c4 9d b2 a0 50 4b e5 15 29 30 8e df 0e 78 92 0a 13
  //          47 9b 24 b2 5a 3d 2e b4 18 a9 28 9b a4 56 92 48 3c d9 1e 9f c7 c5
  //          b6 a4 ed 13 ad fe c4 4e 7a c6 f5 30 bc 11 a6 45 6d 73 88 a7 b5 da
  //          3f d5 23 dd 73 02 47 7e b6 7d 87 ad 9a 6e 13 c9 36 ae 83 b1 79 b3
  //          a4 8f 63 5a 4e 7d ca ad d3 c0 c6 9a b6 ac 97 e7 fa c7 93 0e 66 4e
  //          cd a2 a4 40 be 58 85 48 e0 f0 cb b4 8a 77 56 60 ec 34 0f 2d f2 9a
  //          7f a0 8f 99 fb fb 35 ea 01 67 fe 85 0d 15 65 11 17 d5 d6 16 f5 cc
  //          be 22 0e f7 69 6c 60 0a 0b 0b 1b 46 29 d9 78 b9 09 a1 b4 03 fe 8e
  //          d6 4c 23 fa 91 27 b4 5a 1f ab 86 92 69 04 2e bd 76 f4 ff f2 a4 ca
  //          d5 d2 cd 7a 75 72 fa 43 06 a9 54 3e 2e 5e 94 18 f7 85 6e bf 2a 70
  //          35 44 18 db 24 2c d6 37 b8 a8 2b bb d1 e9 2d a2 ef 0b bd 77 97 c0
  //          6d bb 62 29 59 06 8e d4 1b 02 59 7a aa 42 18 94 9e a6 b0 2c 92 af
  //          a4 f9 bc aa 15 7d 41 19 6b 58 3b 8b d5 d7 2b d1 bc 45 03 bd 44 7b
  //          fa 78 ef 27 be 07 ea 1b 04 0f 2b fa cb c5 9c 70 a7 29 de b0 b3 9e
  //          e3 6f 73 6d 59 b0 0c 49 e1 46 98 59 86 28 49 0c a9 d6 ce 6a 51 35
  //          89 54 87 d3 cd 99 25 c5 ce 75 8d dc a0 b5 86 59 d8 3a a9 96 9b 80
  //          b0 d1 90 83 a0 26 96 6b 7d 82 f4 7f 20 cd ef f2 ed f7 5b 78 70 51
  //          d6 18 2b b2 5b d6 06 25 69 b9 57 12 fd 26 b3 c1 86 07 b4 af e2 ba
  //          bc 3c 61 9f 3d be 35 5e 9e 22 9b 65 a3 40 ca d5 5b 29 5b 2b 21 db
  //          11 48 46 55 30 95 40 01 00 00 00 00 00 00 24 62 e6 aa 97 e1 14 84
  //          a9 d6 b3 a9 f5 8e 17 12 2a 5a 79 8e 92 c3 88 5e 32 00 a2 53 cc be
  //          59 a9 4e a1 46 cf 27 02 d7 c5 03 dd 11 34 a6 ad 51 53 51 67 1b eb
  //          b1 a2 6a 27 01 d9 ae 10 23 46 aa e5 a2 bc a3 84 01 27 fd 98 6c 83
  //          1a 2e e1 20 75 57 92 bc d2 01 82 df f8 f3 7f 4e d2 52 ca d1 32 78
  //          d3 29 91 4b e4 75 77 3e 07 7b 8d ba ca 00 3c a7 b6 d4 c2 08 78 8a
  //          cd 4b b8 7a 60 c4 0e 08 ee 55 18 97 f5 cc af de ae 66 e6 48 69 73
  //          bc f8 0d 24 87 62 e5 26 70 3f e4 5c 21 2c e4 c4 c6 56 62 7c d5 32
  //          9b 5d ab 25 1c 97 e4 44 8f ea ab ea f1 63 0e 07 ba 04 3a 2a 8f 40
  //          05 d2 3f ed 63 da 24 7a 8e 29 63 9b 97 e7 c2 bb 1e d8 c0 23 33 39
  //          76 18 8e 91 4d ee c0 ac 2a f4 b7 f3 78 12 7b f3 38 16 b8 1c 61 77
  //          ed a8 f1 43 19 5a f5 50 2d 45 e4 17 7a 7d 94 58 3c 11 25 e2 e4 59
  //          bd 51 83 f6 97 6f f5 58 89 94 f9 bf 09 d5 25 57 be c2 ae 55 f9 de
  //          3e ea fd 9c 57 2f c8 0f 4b 3d e5 19 f7 c2 31 bc 53 e9 b3 ff d6 73
  //          b4 54 13 bc 78 f8 b3 b8 f2 68 d6 40 3c c5 6f b6 9c d3 c0 39 c7 13
  //          9b a5 33 5f 69 b7 78 33 c0 87 b9 5f f3 c0 fb bd 07 8c b2 0a f0 ad
  //          c7 bf ca 2b 01 76 52 76 25 ce 31 e0 af 4b a3 b5 b6 64 28 36 3a 18
  //          9f 05 e1 3c 57 f8 8f a9 6d d2 1b 35 16 b9 47 44 b8 7c ed 87 fe d0
  //          aa 90 e6 e5 33 57 20 6f 0f 3c 0b e3 ea 96 08 27 e3 12 81 ee cf ad
  //          74 db 9a 7f 4f 14 eb 59 7f 7a 70 a4 e4 f4 1e 48 4f ca 46 73 31 3d
  //          2e 3d 3f 70 98 7b 11 74 d8 4b 89 3d d4 c1 91 a0 ef a4 68 ed 04 5c
  //          bc 49 92 90 dc 65 fc 4b 85 09 8f 83 68 5e 52 14 a2 4d 30 4d b6 9c
  //          f7 ed b6 e9 9e 5d 93 da 62 55 c8 42 30 31 5d 33 1a 84 a5 c3 3c 59
  //          58 13 4d be 3e 01 29 0a 4e bb 13 43 78 a2 af 7c 23 fb de 0a dc 48
  //          f3 21 35 dd c7 ab 3c bc 94 67 e8 1e 76 48 40 85 db 2a bb 90 2b 87
  //          58 1a d6 de 8f 9d 47 e6 d5 99 63 6d ed 2d 47 f4 c2 a7 13 eb 3e 61
  //          7c 89 ce 50 10 66 c0 5c 7b 68 04 f5 77 34 35 15 58 30 26 0b 9f da
  //          e8 0a 1c 3f 14 8a 0e 22 3c f7 d0 54 3a 7a ff bf 89 f0 1d ad c3 67
  //          f1 86 08 11 0a d7 8f d6 58 5f a0 df af aa 4d 05 1f 1a 5d 49 f2 da
  //          a6 1d 43 49 28 b1 95 6c 18 41 58 ad fa b0 a1 dd 4b b3 a1 42 38 ed
  //          7e 4b 22 ca b1 94 35 4f 24 fb f8 02 d0 e4 fa 8a 97 11 15 b9 f3 0d
  //          dc b2 0c 85 cf 25 72 d1 d4 72 73 06 03 6a 43 cc 7a f5 d2 02 61 b7
  //          f5 a0 27 48 bd c5 c1 03 90 f9 0e 72 e9 6c a4 a2 bf bd c0 01 7b dc
  //          3c 1f 5b b9 a5 a5 95 ba 30 7f 52 0a 1a aa b1 b5 c6 e6 cd 9d 8b 57
  //          b3 6b ac 97 19 df 2c 65 02 dd 36 1f 5d 5b 56 a1 fe ea b8 ae 68 a1
  //          71 42 90 3b b0 89 88 02 af bb 8f 23 f1 d9 5e d4 2f 6a 53 f7 87 08
  //          8d 5b 67 15 5e ec 11 97 4d 2d 4b c4 1e cd 7d 7b aa f8 41 0d 98 05
  //          71 a4 20 72 12 7d 4b 49 5f 18 3d 09 18 05 b6 d6 78 22 88 23 1a 18
  //          21 ff e7 3a b9 8f df 77 77 34 a5 2f c7 fd 0e b2 a0 94 c2 f9 46 a5
  //          79 19 2c d2 ad bb 64 dc ec 0d ed 01 99 d1 dc 92 18 d3 66 c6 ac c4
  //          0e f9 7f 92 c5 42 04 81 29 9f db 01 f0 48 c2 6a 72 af 8e 69 ee fb
  //          e8 32 1e 17 dd 8e 05 45 c3 59 1c 1a bd dc 06 a9 29 90 3a 0c 66 ed
  //          18 77 1d 87 79 11 f9 d4 c1 3f 85 e9 dd 0c 3a 68 af 8d b2 71 35 90
  //          6c b3 ea 8a d2 10 77 fb 9a 8f bd fd 33 97 e4 3d fc d5 e8 c5 7d 28
  //          39 75 ad 29 41 75 b7 17 1c 1e d7 61 60 5d cb a2 3f e7 f1 9d 1b 57
  //          3f c0 d7 d6 77 07 46 34 58 2a a7 59 8a 4f 36 7b a0 64 d6 72 7a 2a
  //          e7 bc 98 b0 7c d6 c4 6e 6a 35 5a 7b 44 8e bb c6 e4 52 f2 22 78 dd
  //          d6 c6 45 e3 de d6 f6 b8 6b b7 b6 c1 79 df c6 c7 73 48 36 a1 98 ca
  //          24 e8 12 04 2c e4 97 77 ac f5 48 6b 71 1b 36 a3 27 2a 93 48 10 a3
  //          d6 0d ff 12 56 94 21 3b 52 a2 f2 d7 0f 09 6b 01 32 fe 75 d1 e4 7a
  //          5b 7e 18 a9 53 e5 57 34 9c c6 c2 23 93 12 a2 2d 36 b5 35 ce 3a 16
  //          b8 21 f5 18 37 72 76 6a a0 58 23 08 1b a1 dc 9a b9 b4 b8 2a be 2d
  //          38 c4 b0 8f 1c a7 4b 88 ee ca 8a ab 19 1d 5c db 60 b8 3d 23 e8 c5
  //          e2 25 d8 60 dd d6 5d b0 a2 fc 1e 5d 78 59 17 d3 96 d3 c0 dd 77 38
  //          45 0a 9f a0 c5 70 21 be 1d 3f 83 bd 62 61 1c 16 14 d5 c9 94 0c 19
  //          43 0b bd ea 07 b2 31 be 81 8a 60 ad f1 c3 97 7f 0d a5 66 2b d3 8b
  //          f6 84 1c ac 80 35 cb 9d 43 96 be 9f 03 e7 93 fb 61 44 d0 6d ce 79
  //          9f 24 50 3a 97 92 7a 67 0a e1 03 10 c3 f6 53 68 fe 09 bf dc a9 ae
  //          4a 2e 7d 70 49 d0 fd 11 3c fd 76 8c be 58 88 d1 f3 39 5a cd 4c 19
  //          00 2e cd e7 bc 35 ee f3 d2 a8 c8 a6 9a d4 77 1d 00 29 7c 78 c5 09
  //          d8 d5 3a 5d b4 da 43 57 87 e4 e9 8d e1 68 04 f3 30 51 9b dd 26 a2
  //          9a 88 ae 42 d5 45 fe d6 8a a4 aa 8a 69 0a ff cd d2 6c 82 1e 3c 11
  //          e7 a1 21 8f 59 cb 72 e3 65 13 2d 81 4a c4 28 e8 70 4d 50 4a 26 43
  //          cd 32 51 27 8f 94 a2 6a 80 0b 18 7d 20 c5 cd de 7f ff 45 35 9f 68
  //          cf 28 5f d7 81 36 a6 68 26 7a d1 49 94 8d 4c 6c fb 00 47 d6 f4 79
  //          36 9a e5 78 be f3 f9 60 e7 6a 49 f2 79 fe d5 45 ea 5c 8b fd d5 f0
  //          8e bc 03 5e d0 ce 8f 17 cd 07 04 e5 46 3f 8a 4e 91 ca fa e8 99 4f
  //          6f 0a 18 ad a6 a5 26 25 ed aa d1 6a ae 16 ac b1 51 47 cc 64 2f 1a
  //          63 72 81 fd ed 28 95 46 3b 84 ed 0a a8 69 68 ea b4 20 25 c3 e5 c7
  //          41 b0 15 1e 21 d6 16 f7 0a d9 30 b6 27 af 0a 98 ee 84 f2 fc e4 84
  //          35 d8 52 dc 56 f9 45 58 3b fd a0 b3 01 b5 84 e8 9c 0e 0e ed 88 58
  //          e8 46 ce 26 d0 3e 0a 49 ef e8 f4 4b 10 f5 aa 9b 1c 13 1e 80 be b6
  //          f3 4f 7f 61 86 48 1b 05 f0 c9 72 55 b4 f3 9a 1b 2e ff ec 2f c2 3a
  //          93 ab 4c ba a1 d1 59 c6 07 71 fb 29 6c bc 01 97 87 06 7a 6f f8 d3
  //          40 5a 49 17 fa 3d e5 21 63 d9 c4 9a 6c 2f 92 b8 c6 43 ea 23 39 b6
  //          7c de a9 e9 2c 16 12 99 8b 03 d3 e9 f1 b4 7c b4 6f ad f0 b0 f4 cd
  //          bb 15 49 f1 1a 7b d8 c6 93 63 70 6f 7b 58 43 a5 7a 7c 0e f3 84 e7
  //          2f 3e 44 0a 09 b2 d7 27 77 ab 6b c9 f3 19 72 11 09 3b 50 a0 27 15
  //          c5 97 69 7e 6e 2d 2b 0b a5 c4 8b 3e 74 89 f0 84 2f 05 79 7a 50 e6
  //          97 ae 56 ac 6c d6 82 52 03 28 35 d6 db df 6a d6 b5 0a 52 1d f2 9d
  //          e0 36 5c 6a 65 29 3f 90 d3 a0 96 69 c2 cf 4d 6d a7 18 5a 4b ba 4a
  //          65 86 47 2d 7a 3c 97 7b 9a 01 8d 8c 56 66 e1 b6 98 cf 49 52 74 44
  //          ef 8e 55 51 e6 0f 13 f8 5a fe 6d 5e f5 9a 05 02 42 43 af d1 72 82
  //          3f e4 96 8e d2 a5 6c 95 fd 4e 71 a2 b2 c6 c3 26 f5 70 1e bf e8 53
  //          8c 69 3b 20 fa b1 7b 1f fb c3 bc 4d da 26 6c 6b 3f 87 5c ed bc be
  //          d5 9d 2b f1 f5 40 97 c1 43 53 88 f6 69 eb ff d7 37 50 41 f9 3b a8
  //          b9 77 23 45 5f 03 40 ec 0d 9a 27 95 30 fa 6b b3 09 20 0f b2 8d 3f
  //          d8 5a 5f 60 18 61 41 3a df f9 57 6f f3 05 ec 4c f6 40 de 16 41 79
  //          98 66 42 50 15 f4 a4 24 1f 56 f3 70 93 b4 04 87 08 68 a8 6f 46 05
  //          fc ee 2f e4 87 0e c0 56 53 b1 5d 81 1c f0 54 f9 b7 d1 77 dd ac 58
  //          2d 9f 92 53 00 78 88 97 62 15 e2 8f c1 3b 5f 7c 33 35 58 2e a8 f5
  //          94 09 01 50 ca 47 58 cf e5 dc e3 f6 15 3b ff e1 2a 84 5e db 3f 01
  //          5a 3b 1f 49 97 9e 89 ee 9e 28 0c 51 e3 9b c3 24 09 91 93 8f ca aa
  //          3a 96 60 20 17 30 90 a5 a7 f0 84 1d 1d 09 f9 9b d9 6a d0 1c a3 23
  //          6e e5 9c de 0e d3 a0 05 0f e9 77 ee a0 55 19 2b a6 00 a4 93 84 e3
  //          44 d6 6d f1 59 5c 82 c3 ca 0c 48 c6 a8 35 17 ee 92 eb 76 07 e8 ee
  //          4b b1 31 9d d9 87 a9 9d 74 b1 2c 21 e7 3c 61 91 3d 1c 99 d3 45 e4
  //          ff 9c 21 66 37 67 85 ab 43 c7 9a 10 76 2a 19 ea 9d 9a 4c cd 4e a4
  //          e9 a0 8a 38 05 c5 e1 d7 b7 c7 64 ac 9e 47 4a 0f 13 dd d9 31 de 1f
  //          e3 5f fe 19 16 ba 4e aa 52 f6 db 1d 17 0b b1 c1 9b 66 41 72 74 e3
  //          ce 5e a2 ab 34 79 31 6f 79 85 95 05 8a a9 a0 f0 df c0 27 4c 37 9a
  //          25 00 b1 75 25 aa 06 ce 0c 77 5d 28 b7 c7 68 0a 6d 4d ee 42 a2 80
  //          ca 18 93 23 01 09 96 72 9c 17 c3 cc 0a 7d 57 32 81 8f 2c f4 29 4d
  //          3f 32 65 25 e9 d5 e2 17 a2 85 ba f5 1d 85 5d a2 c0 00 58 bc bd a8
  //          9e 6f 51 a6 dc a2 81 b9 7e 69 2e a3 31 c7 dd cd f8 a8 db e4 78 5b
  //          47 2f ee fc ab 05 a1 d3 e6 8a 37 87 35 dc c7 f9 23 15 1e b0 28 c3
  //          cd 85 d9 4e f4 c0 a1 d3 28 e8 5f ec c4 a6 81 f7 b1 7b c0 f9 41 a3
  //          00 00 00 00 00 00 00 00 00} (length 0x1000) size: len = 0x1000 (2
  //          bytes)
  //        }
  //      }
  //    }
  //    len: len = 0x1006 (8 bytes)
  //  ]
  NONFAILING(*(uint32_t*)0x200000001f00 = 8);
  NONFAILING(memcpy(
      (void*)0x200000001f04,
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      "\x42\x93\x25\x96\xa4\x8a\x76\x8f\x54\x5a\x8c\x3b\xa2\x0d\x0b\xcc\x0f\x2a"
      "\x12\x6d\x3a\x35\x19\x13\x43\xdd\x27\x11\x3a\xca\x34\x03\x7a\x52\x50\xac"
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      "\x85\x95\x05\x8a\xa9\xa0\xf0\xdf\xc0\x27\x4c\x37\x9a\x25\x00\xb1\x75\x25"
      "\xaa\x06\xce\x0c\x77\x5d\x28\xb7\xc7\x68\x0a\x6d\x4d\xee\x42\xa2\x80\xca"
      "\x18\x93\x23\x01\x09\x96\x72\x9c\x17\xc3\xcc\x0a\x7d\x57\x32\x81\x8f\x2c"
      "\xf4\x29\x4d\x3f\x32\x65\x25\xe9\xd5\xe2\x17\xa2\x85\xba\xf5\x1d\x85\x5d"
      "\xa2\xc0\x00\x58\xbc\xbd\xa8\x9e\x6f\x51\xa6\xdc\xa2\x81\xb9\x7e\x69\x2e"
      "\xa3\x31\xc7\xdd\xcd\xf8\xa8\xdb\xe4\x78\x5b\x47\x2f\xee\xfc\xab\x05\xa1"
      "\xd3\xe6\x8a\x37\x87\x35\xdc\xc7\xf9\x23\x15\x1e\xb0\x28\xc3\xcd\x85\xd9"
      "\x4e\xf4\xc0\xa1\xd3\x28\xe8\x5f\xec\xc4\xa6\x81\xf7\xb1\x7b\xc0\xf9\x41"
      "\xa3\x00\x00\x00\x00\x00\x00\x00\x00\x00",
      4096));
  NONFAILING(*(uint16_t*)0x200000002f04 = 0x1000);
  syscall(__NR_write, /*fd=*/(intptr_t)-1, /*data=*/0x200000001f00ul,
          /*len=*/0x1006ul);
}
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;
  install_segv_handler();
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}