// https://syzkaller.appspot.com/bug?id=28daec4f11514873dfde8de4742143259b443ece
// 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 mount_cgroups(const char* dir, const char** controllers, int count)
{
  if (mkdir(dir, 0777)) {
    return;
  }
  char enabled[128] = {0};
  int i = 0;
  for (; i < count; i++) {
    if (mount("none", dir, "cgroup", 0, controllers[i])) {
      continue;
    }
    umount(dir);
    strcat(enabled, ",");
    strcat(enabled, controllers[i]);
  }
  if (enabled[0] == 0) {
    if (rmdir(dir) && errno != EBUSY)
      exit(1);
    return;
  }
  if (mount("none", dir, "cgroup", 0, enabled + 1)) {
    if (rmdir(dir) && errno != EBUSY)
      exit(1);
  }
  if (chmod(dir, 0777)) {
  }
}

static void mount_cgroups2(const char** controllers, int count)
{
  if (mkdir("/syzcgroup/unified", 0777)) {
    return;
  }
  if (mount("none", "/syzcgroup/unified", "cgroup2", 0, NULL)) {
    if (rmdir("/syzcgroup/unified") && errno != EBUSY)
      exit(1);
    return;
  }
  if (chmod("/syzcgroup/unified", 0777)) {
  }
  int control = open("/syzcgroup/unified/cgroup.subtree_control", O_WRONLY);
  if (control == -1)
    return;
  int i;
  for (i = 0; i < count; i++)
    if (write(control, controllers[i], strlen(controllers[i])) < 0) {
    }
  close(control);
}

static void setup_cgroups()
{
  const char* unified_controllers[] = {"+cpu", "+io", "+pids"};
  const char* net_controllers[] = {"net", "net_prio", "devices", "blkio",
                                   "freezer"};
  const char* cpu_controllers[] = {"cpuset", "cpuacct", "hugetlb", "rlimit",
                                   "memory"};
  if (mkdir("/syzcgroup", 0777)) {
    return;
  }
  mount_cgroups2(unified_controllers,
                 sizeof(unified_controllers) / sizeof(unified_controllers[0]));
  mount_cgroups("/syzcgroup/net", net_controllers,
                sizeof(net_controllers) / sizeof(net_controllers[0]));
  mount_cgroups("/syzcgroup/cpu", cpu_controllers,
                sizeof(cpu_controllers) / sizeof(cpu_controllers[0]));
  write_file("/syzcgroup/cpu/cgroup.clone_children", "1");
  write_file("/syzcgroup/cpu/cpuset.memory_pressure_enabled", "1");
}

static void setup_cgroups_loop()
{
  int pid = getpid();
  char file[128];
  char cgroupdir[64];
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/unified/syz%llu", procid);
  if (mkdir(cgroupdir, 0777)) {
  }
  snprintf(file, sizeof(file), "%s/pids.max", cgroupdir);
  write_file(file, "32");
  snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir);
  write_file(file, "%d", pid);
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/cpu/syz%llu", procid);
  if (mkdir(cgroupdir, 0777)) {
  }
  snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir);
  write_file(file, "%d", pid);
  snprintf(file, sizeof(file), "%s/memory.soft_limit_in_bytes", cgroupdir);
  write_file(file, "%d", 299 << 20);
  snprintf(file, sizeof(file), "%s/memory.limit_in_bytes", cgroupdir);
  write_file(file, "%d", 300 << 20);
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/net/syz%llu", procid);
  if (mkdir(cgroupdir, 0777)) {
  }
  snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir);
  write_file(file, "%d", pid);
}

static void setup_cgroups_test()
{
  char cgroupdir[64];
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/unified/syz%llu", procid);
  if (symlink(cgroupdir, "./cgroup")) {
  }
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/cpu/syz%llu", procid);
  if (symlink(cgroupdir, "./cgroup.cpu")) {
  }
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/net/syz%llu", procid);
  if (symlink(cgroupdir, "./cgroup.net")) {
  }
}

static void initialize_cgroups()
{
  if (mkdir("./syz-tmp/newroot/syzcgroup", 0700))
    exit(1);
  if (mkdir("./syz-tmp/newroot/syzcgroup/unified", 0700))
    exit(1);
  if (mkdir("./syz-tmp/newroot/syzcgroup/cpu", 0700))
    exit(1);
  if (mkdir("./syz-tmp/newroot/syzcgroup/net", 0700))
    exit(1);
  unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE;
  if (mount("/syzcgroup/unified", "./syz-tmp/newroot/syzcgroup/unified", NULL,
            bind_mount_flags, NULL)) {
  }
  if (mount("/syzcgroup/cpu", "./syz-tmp/newroot/syzcgroup/cpu", NULL,
            bind_mount_flags, NULL)) {
  }
  if (mount("/syzcgroup/net", "./syz-tmp/newroot/syzcgroup/net", NULL,
            bind_mount_flags, NULL)) {
  }
}

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);
  initialize_cgroups();
  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 setup_loop()
{
  setup_cgroups_loop();
}

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();
  setup_cgroups_test();
  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)
{
  setup_loop();
  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*)0x200000000f00, "udf\000", 4));
  NONFAILING(memcpy((void*)0x2000000000c0, "./file0\000", 8));
  NONFAILING(memcpy((void*)0x200000000280, "adinicb", 7));
  NONFAILING(*(uint8_t*)0x200000000287 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000288, "iocharset", 9));
  NONFAILING(*(uint8_t*)0x200000000291 = 0x3d);
  NONFAILING(memcpy((void*)0x200000000292, "cp1255", 6));
  NONFAILING(*(uint8_t*)0x200000000298 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000299, "utf8", 4));
  NONFAILING(*(uint8_t*)0x20000000029d = 0x2c);
  NONFAILING(memcpy((void*)0x20000000029e, "uid", 3));
  NONFAILING(*(uint8_t*)0x2000000002a1 = 0x3d);
  NONFAILING(sprintf((char*)0x2000000002a2, "%020llu", (long long)0));
  NONFAILING(*(uint8_t*)0x2000000002b6 = 0x2c);
  NONFAILING(memcpy((void*)0x2000000002b7, "novrs", 5));
  NONFAILING(*(uint8_t*)0x2000000002bc = 0x2c);
  NONFAILING(memcpy((void*)0x2000000002bd, "iocharset", 9));
  NONFAILING(*(uint8_t*)0x2000000002c6 = 0x3d);
  NONFAILING(memcpy((void*)0x2000000002c7, "macinuit", 8));
  NONFAILING(*(uint8_t*)0x2000000002cf = 0x2c);
  NONFAILING(memcpy((void*)0x2000000002d0, "mode", 4));
  NONFAILING(*(uint8_t*)0x2000000002d4 = 0x3d);
  NONFAILING(sprintf((char*)0x2000000002d5, "%023llo", (long long)8));
  NONFAILING(*(uint8_t*)0x2000000002ec = 0x2c);
  NONFAILING(memcpy((void*)0x2000000002ed, "iocharset", 9));
  NONFAILING(*(uint8_t*)0x2000000002f6 = 0x3d);
  NONFAILING(memcpy((void*)0x2000000002f7, "iso8859-5", 9));
  NONFAILING(*(uint8_t*)0x200000000300 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000301, "adinicb", 7));
  NONFAILING(*(uint8_t*)0x200000000308 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000309, "gid=forget", 10));
  NONFAILING(*(uint8_t*)0x200000000313 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000314, "lastblock", 9));
  NONFAILING(*(uint8_t*)0x20000000031d = 0x3d);
  NONFAILING(sprintf((char*)0x20000000031e, "%020llu", (long long)7));
  NONFAILING(*(uint8_t*)0x200000000332 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000333, "gid=forget", 10));
  NONFAILING(*(uint8_t*)0x20000000033d = 0x2c);
  NONFAILING(memcpy((void*)0x20000000033e, "uid", 3));
  NONFAILING(*(uint8_t*)0x200000000341 = 0x3d);
  NONFAILING(sprintf((char*)0x200000000342, "%020llu", (long long)0));
  NONFAILING(*(uint8_t*)0x200000000356 = 0x2c);
  NONFAILING(*(uint8_t*)0x200000000357 = 0);
  NONFAILING(memcpy(
      (void*)0x200000000f40,
      "\x78\x9c\xec\xdd\x4f\x6c\x1c\xd7\x7d\x07\xf0\xdf\x1b\x2d\xc5\x95\xdc\x56"
      "\x4c\x9c\x2a\x4e\x1a\x07\x9b\xb6\x48\x65\xc6\x72\xf5\x2f\xa6\x62\x15\xee"
      "\xaa\xa6\xd9\x06\x90\x65\x22\x14\x73\x0b\xc0\x95\x48\xa9\x0b\x53\x24\x41"
      "\x52\x8d\x6c\xa4\x05\xd3\x4b\x0f\x3d\x04\x28\x8a\x1e\x72\x22\xd0\x1a\x05"
      "\x52\x34\x30\x9a\x22\xe8\x91\x69\x5d\x20\xb9\xf8\x50\xe4\xd4\x13\xd1\xc2"
      "\x46\x50\xf4\xc0\x16\x01\x02\x14\x30\x58\xcc\xec\x5b\x71\x49\x91\xb6\x2c"
      "\x92\x12\x25\x7f\x3e\x36\xf5\x9d\x9d\x79\x6f\xe6\xbd\x99\xf5\x8c\x2c\xe8"
      "\xcd\x0b\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\xe2\xf7"
      "\x5e\xbe\x78\xea\x74\xda\x66\xc3\xa1\x87\xd0\x18\x00\xe0\x81\xb8\x3c\xf6"
      "\xb5\x53\x67\xb6\x7b\xfe\x03\x00\x8f\xad\x2b\x3b\xfd\xff\x3f\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x70\x50\xa4\x28\xe2\xc9\x48\x31\x77\x79"
      "\x2d\x4d\x54\x9f\x3b\xea\x97\xda\x7d\xb7\x6e\x8f\x0f\x8f\x6c\x5f\xed\x48"
      "\xaa\x6a\x1e\xaa\xca\x97\x3f\xf5\xd3\x67\xce\x9e\xfb\xf2\xf3\x43\xe7\xbb"
      "\x79\xa9\x3d\xf3\x01\xf5\xf7\xda\x67\xe3\xd5\xb1\x2b\x17\x1b\x2f\xcd\xde"
      "\x9c\x9b\x9f\x5a\x58\x98\x9a\x6c\x8c\xcf\xb4\xaf\xcd\x4e\x4e\xdd\xf3\x1e"
      "\x76\x5b\x7f\xab\xc1\xea\x04\x34\x6e\xbe\x76\x6b\xf2\xfa\xf5\x85\xc6\x99"
      "\xe7\xce\x6e\xda\x7c\x7b\xe0\xbd\xfe\x27\x8e\x0f\x5c\x18\x7a\xe6\xe4\xd3"
      "\xdd\xb2\xe3\xc3\x23\x23\x63\x1b\x45\xea\xbd\xe5\x6b\xf7\xdd\x90\x8e\x9d"
      "\x46\x78\x1c\x8e\x22\x4e\x46\x8a\x67\xbf\xff\xb3\xd4\x8a\x88\x22\x76\x7f"
      "\x2e\xea\x0f\xf6\xda\x6f\x75\xa4\xea\xc4\x60\xd5\x89\xf1\xe1\x91\xaa\x23"
      "\xd3\xed\xd6\xcc\x62\xb9\x71\xb4\x7b\x22\x8a\x88\x46\x4f\xa5\x66\xf7\x1c"
      "\x6d\x7f\x2d\xa2\xd6\xf7\x40\xfb\xb0\xb3\x66\xc4\x52\xd9\xfc\xb2\xc1\x83"
      "\x65\xf7\xc6\xe6\x5a\xf3\xad\xab\xd3\x53\x8d\xd1\xd6\xfc\x62\x7b\xb1\x3d"
      "\x3b\x33\x9a\x3a\xad\x2d\xfb\xd3\x88\x22\xce\xa7\x88\xe5\x88\x58\xed\xbf"
      "\x7b\x77\x7d\x51\x44\x2d\x52\x7c\xf7\xd8\x5a\xba\x9a\xdf\xfa\x51\x9d\x87"
      "\x2f\x55\x03\x83\x77\x6e\x47\xb1\x8f\x7d\xbc\x07\x65\x3b\x1b\x7d\x11\xcb"
      "\xc5\x23\x70\xcd\x0e\xb0\xfe\x28\xe2\x95\x48\xf1\xf3\xb7\x4f\xc4\xb5\x7c"
      "\x9f\xa9\xee\x35\x5f\x8c\x78\xa5\xcc\x1f\x46\xbc\x59\xe6\x8b\x11\xa9\xfc"
      "\x62\x9c\x8b\x78\x77\x9b\xef\x11\x8f\xa6\x5a\x14\xf1\xe7\xe5\xf5\xbf\xb0"
      "\x96\x26\xab\xfb\x41\xf7\xbe\x72\xe9\xeb\x8d\xaf\xce\x5c\x9f\xed\x29\xdb"
      "\xbd\xaf\x7c\xc4\xe7\xc3\x5d\x77\x8a\x87\xf4\x7c\x38\xb2\x25\x1f\x8c\x03"
      "\x7e\x6f\xaa\x47\x11\xad\xea\x8e\xbf\x96\xee\xff\x37\x3b\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\xec\xb5\x23\x51\xc4\x67\x22\xc5\xcb"
      "\xff\xf6\x47\xd5\xb8\xe2\xa8\xc6\xa5\x1f\xbb\x30\xf4\xfb\x03\xbf\xdc\x3b"
      "\x66\xfc\xa9\x0f\xd9\x4f\x59\xf6\xb9\x88\x58\x2a\xee\x6d\x4c\xee\xe1\x3c"
      "\x30\x70\x34\x8d\xa6\xf4\x90\xc7\x12\x7f\x9c\xd5\xa3\x88\x3f\xce\xe3\xff"
      "\xbe\xfd\xb0\x1b\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\xf0\xb1\x56\xc4\x4f\x23\xc5\x0b\xef\x9c\x48\xcb\xd1\x3b\xa7\x78\x7b"
      "\xe6\x46\xe3\x4a\xeb\xea\x74\x67\x56\xd8\xee\xdc\xbf\xdd\x39\xd3\xd7\xd7"
      "\xd7\xd7\x1b\xa9\x93\xcd\x9c\x13\x39\x97\x72\x2e\xe7\x5c\xc9\xb9\x9a\x33"
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      "\xe3\x80\x8c\xdd\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x1e\x2f\x45\xf5\x4f\x8a\xef\x7c\x73\x2d\xad\xf7\x77\xe6\x97\x9e\x88"
      "\x4e\xae\x98\x0f\xf4\xb1\xf7\xff\x01\x00\x00\xff\xff\xd9\x20\xf6\x0d",
      3149));
  NONFAILING(
      syz_mount_image(/*fs=*/0x200000000f00, /*dir=*/0x2000000000c0,
                      /*flags=MS_I_VERSION|MS_RELATIME|MS_NODEV*/ 0xa00004,
                      /*opts=*/0x200000000280, /*chdir=*/1, /*size=*/0xc4d,
                      /*img=*/0x200000000f40));
  NONFAILING(memcpy((void*)0x200000000180, "./bus\000", 6));
  syscall(__NR_open, /*file=*/0x200000000180ul,
          /*flags=O_TRUNC|O_SYNC|O_NOATIME|O_LARGEFILE|O_CREAT|O_RDWR|0x3c*/
          0x14927eul, /*mode=*/0ul);
  NONFAILING(memcpy((void*)0x200000000380, "/dev/loop", 9));
  NONFAILING(*(uint8_t*)0x200000000389 = 0x30);
  NONFAILING(*(uint8_t*)0x20000000038a = 0);
  NONFAILING(memcpy((void*)0x200000000140, "./bus\000", 6));
  syscall(__NR_mount, /*src=*/0x200000000380ul, /*dst=*/0x200000000140ul,
          /*type=*/0ul, /*flags=MS_BIND*/ 0x1000ul, /*data=*/0ul);
  res = syscall(__NR_socket, /*domain=*/0x26ul, /*type=*/5ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  NONFAILING(*(uint16_t*)0x2000000004c0 = 0x26);
  NONFAILING(
      memcpy((void*)0x2000000004c2, "skcipher\000\000\000\000\000\000", 14));
  NONFAILING(*(uint32_t*)0x2000000004d0 = 0);
  NONFAILING(*(uint32_t*)0x2000000004d4 = 0);
  NONFAILING(
      memcpy((void*)0x2000000004d8,
             "cbc-camellia-"
             "aesni\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
             "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
             "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000",
             64));
  syscall(__NR_bind, /*fd=*/r[0], /*addr=*/0x2000000004c0ul,
          /*addrlen=*/0x58ul);
  NONFAILING(memcpy((void*)0x200000000280,
                    "\xad\x56\xb6\xc5\x82\x0f\xae\x9d\x6d\xcd\x32\x92\xea\x54"
                    "\xc7\xbe\xef\x91\x5d\x56\x4c\x90\xc2\x00",
                    24));
  syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0x117, /*opt=*/1,
          /*key=*/0x200000000280ul, /*keylen=*/0x18ul);
  res = syscall(__NR_accept4, /*fd=*/r[0], /*peer=*/0ul, /*peerlen=*/0ul,
                /*flags=SOCK_NONBLOCK*/ 0x800ul);
  if (res != -1)
    r[1] = res;
  NONFAILING(*(uint64_t*)0x200000000040 = 0);
  NONFAILING(*(uint32_t*)0x200000000048 = 0);
  NONFAILING(*(uint64_t*)0x200000000050 = 0x200000000000);
  NONFAILING(*(uint64_t*)0x200000000000 = 0x200000000080);
  NONFAILING(memcpy(
      (void*)0x200000000080,
      "\xf7\x8d\x9c\xa3\x8f\xff\x48\xf3\xbe\x52\x16\x34\x48\x41\x2b\xa8", 16));
  NONFAILING(*(uint64_t*)0x200000000008 = 0xfffffe3f);
  NONFAILING(*(uint64_t*)0x200000000010 = 0x200000000140);
  NONFAILING(
      memcpy((void*)0x200000000140,
             "\xeb\xe3\xa0\xe9\x79\x6c\xfd\x16\x47\xe2\x99\xf4\xe3\x76\xfd\xba"
             "\x12\x82\x80\xb3\x72\x21\x9d\x20\x5e\x81\xf4\xa7\xf7\x1c\x19\x26"
             "\xaa\xe1\xef\xd7\xe0\x05\x4a\x86\x3f\x3d\x5c\xfe\x6c\xb5\x5b\x5b"
             "\xb9\xfa\x69\x35\x84\x9e\x60\x98\xed\x88\x4e\x7c\xb5\x17\x26\xb3"
             "\x60\xfb\xb3\x7b\x4f\xe0\x35\xbb\xb0\x95\x87\x30\x48",
             77));
  NONFAILING(*(uint64_t*)0x200000000018 = 0);
  NONFAILING(*(uint64_t*)0x200000000020 = 0x2000000003c0);
  NONFAILING(memcpy(
      (void*)0x2000000003c0,
      "\xe8\x70\x0e\x44\x4d\x50\xa9\x69\xff\x67\x34\x7c\xff\x61\x27\xe6\xef\x12"
      "\xee\x38\x19\x27\x14\x82\xa4\x97\x5a\x52\xc1\xab\x9b\x8b\x4d\xb3\x94\x5d"
      "\x10\x32\x00\x5e\xab\xe9\x7b\x4d\xc3\x3a\x47\xd3\xa1\x58\xda\x98\x84\x56"
      "\xd3\x00\x26\xb4\x33\x18\x6f\x53\xcd\xcd\xb9\x3a\x47\x22\xbf\x30\x6a\x10"
      "\x47\x0d\x50\xf5\xcb\x1e\xce\x9e\xad\x34\x59\xba\xb1\xcf\x15\x38\xcd\x0b"
      "\x15\x76\x53\xc5\xe8\x92\x96\x2c\x80\xf1\x58\xc4\x43\xe9\xc6\xad\x7d\x2a"
      "\x81\x03\xef\x2f\x4b\x93\x76\x6b\x9a\x21\x50\x1f\x94\xc1\x56\x8b\x13\x75"
      "\x6b\x66\xf7\x4f\x46\xcf\x80\x17\x04\xd2\xda\x8b\x96\xc3\x40\x70\xb2\x33"
      "\xaf\x0a\xfc\xc4\x36\x71\x2e\x58\xed\x25\xe7\x21\x19\x3a\xf0\x5a\x04\x5a"
      "\xd3\xfd\xc9\x28\xf0\x2f\x3d\xba\xd1\x9d\x3e\x66\xee\xbd\xa2\xe6\x3f\x3f"
      "\x46\xef\x45\x11\xce\xe2\x6d\x7b\x48\x24\x18\x47\xbf\x9e\x34\x3e\xf4\x67"
      "\x4c\x45\xe2\xa0\x85\x06\x0f\x11",
      206));
  NONFAILING(*(uint64_t*)0x200000000028 = 0);
  NONFAILING(*(uint64_t*)0x200000000058 = 1);
  NONFAILING(*(uint64_t*)0x200000000060 = 0x200000000380);
  NONFAILING(*(uint64_t*)0x200000000380 = 0x18);
  NONFAILING(*(uint32_t*)0x200000000388 = 0x117);
  NONFAILING(*(uint32_t*)0x20000000038c = 3);
  NONFAILING(*(uint32_t*)0x200000000390 = 1);
  NONFAILING(*(uint64_t*)0x200000000068 = 0x18);
  NONFAILING(*(uint32_t*)0x200000000070 = 0);
  syscall(__NR_sendmmsg, /*fd=*/r[1], /*mmsg=*/0x200000000040ul, /*vlen=*/1ul,
          /*f=MSG_BATCH|MSG_CONFIRM*/ 0x40800ul);
  NONFAILING(*(uint64_t*)0x2000000005c0 = 0);
  NONFAILING(*(uint32_t*)0x2000000005c8 = 0);
  NONFAILING(*(uint64_t*)0x2000000005d0 = 0x2000000001c0);
  NONFAILING(*(uint64_t*)0x2000000001c0 = 0x2000000000c0);
  NONFAILING(*(uint64_t*)0x2000000001c8 = 0x7ffff000);
  NONFAILING(*(uint64_t*)0x2000000001d0 = 0x200000000200);
  NONFAILING(*(uint64_t*)0x2000000001d8 = 0x20000253);
  NONFAILING(*(uint64_t*)0x2000000005d8 = 2);
  NONFAILING(*(uint64_t*)0x2000000005e0 = 0);
  NONFAILING(*(uint64_t*)0x2000000005e8 = 0);
  NONFAILING(*(uint32_t*)0x2000000005f0 = 0);
  syscall(__NR_recvmsg, /*fd=*/r[1], /*msg=*/0x2000000005c0ul, /*f=*/0ul, 0);
  NONFAILING(memcpy((void*)0x200000000180, "./bus\000", 6));
  res = syscall(
      __NR_open, /*file=*/0x200000000180ul,
      /*flags=O_SYNC|O_NOCTTY|O_NOATIME|O_RDWR|0x3c*/ 0x14113eul,
      /*mode=S_IXOTH|S_IXGRP|S_IWGRP|S_IRGRP|S_IWUSR|S_IRUSR|0x6ceac77f206eaa00*/
      0x6ceac77f206eabb9ul);
  if (res != -1)
    r[2] = res;
  NONFAILING(memcpy((void*)0x200000000080, "#! ", 3));
  NONFAILING(*(uint8_t*)0x200000000083 = 0xa);
  syscall(__NR_write, /*fd=*/r[2], /*data=*/0x200000000080ul,
          /*len=*/0x208e24bul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  setup_cgroups();
  const char* reason;
  (void)reason;
  install_segv_handler();
  use_temporary_dir();
  do_sandbox_none();
  return 0;
}