// https://syzkaller.appspot.com/bug?id=127fa0ac195cfd85a8c02f1f2485d6d48772bf7b
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <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/futex.h>
#include <linux/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

static unsigned long long procid;

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static void use_temporary_dir(void)
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    exit(1);
  if (chmod(tmpdir, 0777))
    exit(1);
  if (chdir(tmpdir))
    exit(1);
}

static void thread_start(void* (*fn)(void*), void* arg)
{
  pthread_t th;
  pthread_attr_t attr;
  pthread_attr_init(&attr);
  pthread_attr_setstacksize(&attr, 128 << 10);
  int i = 0;
  for (; i < 100; i++) {
    if (pthread_create(&th, &attr, fn, arg) == 0) {
      pthread_attr_destroy(&attr);
      return;
    }
    if (errno == EAGAIN) {
      usleep(50);
      continue;
    }
    break;
  }
  exit(1);
}

typedef struct {
  int state;
} event_t;

static void event_init(event_t* ev)
{
  ev->state = 0;
}

static void event_reset(event_t* ev)
{
  ev->state = 0;
}

static void event_set(event_t* ev)
{
  if (ev->state)
    exit(1);
  __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE);
  syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000);
}

static void event_wait(event_t* ev)
{
  while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0);
}

static int event_isset(event_t* ev)
{
  return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE);
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
  uint64_t start = current_time_ms();
  uint64_t now = start;
  for (;;) {
    uint64_t remain = timeout - (now - start);
    struct timespec ts;
    ts.tv_sec = remain / 1000;
    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts);
    if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
      return 1;
    now = current_time_ms();
    if (now - start > timeout)
      return 0;
  }
}

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

#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);
}

struct thread_t {
  int created, call;
  event_t ready, done;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    event_wait(&th->ready);
    event_reset(&th->ready);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    event_set(&th->done);
  }
  return 0;
}

static void execute_one(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  int i, call, thread;
  for (call = 0; call < 7; call++) {
    for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
         thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        event_init(&th->ready);
        event_init(&th->done);
        event_set(&th->done);
        thread_start(thr, th);
      }
      if (!event_isset(&th->done))
        continue;
      event_reset(&th->done);
      th->call = call;
      __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
      event_set(&th->ready);
      event_timedwait(&th->done, 50 + (call == 0 ? 4000 : 0));
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
  close_fds();
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      exit(1);
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      if (chdir(cwdbuf))
        exit(1);
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    //  syz_mount_image$udf arguments: [
    //    fs: ptr[in, buffer] {
    //      buffer: {75 64 66 00} (length 0x4)
    //    }
    //    dir: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
    //    }
    //    flags: mount_flags = 0x2014000 (8 bytes)
    //    opts: ptr[inout, array[ANYUNION]] {
    //      array[ANYUNION] {
    //        union ANYUNION {
    //          ANYBLOB: buffer: {6c 61 73 74 62 6c 6f 63 6b 3d 30 30 30 30 30
    //          30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 2c 75 6d 61 73 6b
    //          3d 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30
    //          31 30 32 2c 64 6d 6f 64 65 3d 30 30 30 30 30 30 30 30 30 30 30
    //          30 30 30 30 30 30 30 37 37 37 37 37 2c 6e 6f 76 72 73 2c 73 68
    //          6f 72 74 61 64 2c 73 68 6f 72 74 61 64 2c 75 6e 64 65 6c 65 74
    //          65 2c 69 6f 63 68 61 72 73 65 74 3d 63 70 34 33 37 2c 73 68 6f
    //          72 74 61 64 2c 75 6d 61 73 6b 3d 30 30 30 30 30 30 30 30 30 30
    //          30 30 30 30 30 30 30 30 30 30 30 30 36 2c 64 6d 6f 64 65 3d 30
    //          30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 31
    //          31 2c 66 69 6c 65 73 65 74 3d 30 30 30 30 30 30 30 30 30 30 30
    //          30 30 30 30 30 30 30 31 31 2c 75 69 64 3d} (length 0xef)
    //        }
    //        union ANYUNION {
    //          ANYBLOB: buffer: {d6 d8 4c 0d f9 37 ed 4a 0c d3 00 00 f2 e9 ea
    //          95 68 ea b7 4a 46 c5 25 dc 38 69 83 ea de 0b 0c e5 f1 dd 91 17
    //          06 cf 7d 32 d7 d5 08 d1 82 3b 88 71 e0 01 00 00 00 eb 4c e0 a0
    //          08 f5 cd ea 62 2f c6 67 5e 54 86 86 0a 75 2e d0 29 8a 94 8e fa
    //          72 b2 c8 d8 52 51 81 64 4a 31 24 f3 54 4a 50 f1 92 b9 8f 05 5a
    //          d1 25 fd 46 74 53 44 13 c6 04 41 36 ea 5a ef ac 52 67 e4 37 39
    //          62 6e a9 39 1d 8f 34 6c 46 94 f7 04 00 00 00 00 00 00 00 ce e1
    //          f6 28 d1 ce c3 46 28 30 60 6b b6 12 bf ed 91 18 1c dc 10 7b b9
    //          1a 2e 86 de 2a d5} (length 0xa8)
    //        }
    //        union ANYUNION {
    //          ANYBLOB: buffer: {2c 00 01 00 00 00 00 00 00 30 30 30 30 00 30
    //          30 30 30 30 30 30 30 30 30 30 30 30 30 35 2c 00 d7 45 dc ab 34
    //          ff 63 40 99 d4 02 40 61 84 d6 88 f8 1f 99 d0 1c e1 16 4b fd 68
    //          77 7e 4b df e2 e9 fa e1 8a 6c 91 c7 0b c3 4f 97 4b 26 5a 58 d1
    //          88 9c 9c 38 e7 e3 28 95 b1 92 1f 8e 4b 4b 41 f3 ef 0d eb ac 34
    //          b1 9a a6 87 22 1a 6b 94 2e b3 96 15 9e f6 de 96 45 e4 b3 38 65
    //          d6 b6 2e 56 42 77 ed 35 92 35 44 b6 37 98 22 86 1e c7 9f 42 3c
    //          1b 03 72 e2 b2 6b db a8 1f ce a8 c4 d1 eb 65 78 69 c8 7c 4d 7c
    //          f2 b1 87 c3 87 d6 32 e5 8f 44 95 6d 2d 7b 16 ba 93 15 35 14 08
    //          7b 38 67 6f 72 ca b9 f6 2f 53 f3 31 bb 7f 95 2e f5 ab 05 e9 40
    //          3a fa 22 e6 57 43 c5 83 ba 30 68 3a c5 e3 01 73 cd b5 c2 16 d8
    //          79 ea d8 b3 ee 56 d6 02 a3 9e 33 c6 3b a2 75 4c cf e2 31 c2 e1
    //          b6 60 f2 a6 8c c1 4a 91 86 ee 2e 83 4b e5 f1 0b 09} (length
    //          0x107)
    //        }
    //      }
    //    }
    //    chdir: int8 = 0x12 (1 bytes)
    //    size: len = 0xc49 (8 bytes)
    //    img: ptr[in, buffer] {
    //      buffer: (compressed buffer with length 0xc49)
    //    }
    //  ]
    //  returns fd_dir
    memcpy((void*)0x200000000080, "udf\000", 4);
    memcpy((void*)0x200000000100, "./file1\000", 8);
    memcpy((void*)0x200000000580,
           "lastblock=00000000000000000000,umask=00000000000000000000102,dmode="
           "00000000000000000077777,novrs,shortad,shortad,undelete,iocharset="
           "cp437,shortad,umask=00000000000000000000006,dmode="
           "00000000000000000000011,fileset=00000000000000000011,uid=",
           239);
    memcpy(
        (void*)0x20000000066f,
        "\xd6\xd8\x4c\x0d\xf9\x37\xed\x4a\x0c\xd3\x00\x00\xf2\xe9\xea\x95\x68"
        "\xea\xb7\x4a\x46\xc5\x25\xdc\x38\x69\x83\xea\xde\x0b\x0c\xe5\xf1\xdd"
        "\x91\x17\x06\xcf\x7d\x32\xd7\xd5\x08\xd1\x82\x3b\x88\x71\xe0\x01\x00"
        "\x00\x00\xeb\x4c\xe0\xa0\x08\xf5\xcd\xea\x62\x2f\xc6\x67\x5e\x54\x86"
        "\x86\x0a\x75\x2e\xd0\x29\x8a\x94\x8e\xfa\x72\xb2\xc8\xd8\x52\x51\x81"
        "\x64\x4a\x31\x24\xf3\x54\x4a\x50\xf1\x92\xb9\x8f\x05\x5a\xd1\x25\xfd"
        "\x46\x74\x53\x44\x13\xc6\x04\x41\x36\xea\x5a\xef\xac\x52\x67\xe4\x37"
        "\x39\x62\x6e\xa9\x39\x1d\x8f\x34\x6c\x46\x94\xf7\x04\x00\x00\x00\x00"
        "\x00\x00\x00\xce\xe1\xf6\x28\xd1\xce\xc3\x46\x28\x30\x60\x6b\xb6\x12"
        "\xbf\xed\x91\x18\x1c\xdc\x10\x7b\xb9\x1a\x2e\x86\xde\x2a\xd5",
        168);
    memcpy(
        (void*)0x200000000717,
        "\x2c\x00\x01\x00\x00\x00\x00\x00\x00\x30\x30\x30\x30\x00\x30\x30\x30"
        "\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x00\xd7\x45\xdc"
        "\xab\x34\xff\x63\x40\x99\xd4\x02\x40\x61\x84\xd6\x88\xf8\x1f\x99\xd0"
        "\x1c\xe1\x16\x4b\xfd\x68\x77\x7e\x4b\xdf\xe2\xe9\xfa\xe1\x8a\x6c\x91"
        "\xc7\x0b\xc3\x4f\x97\x4b\x26\x5a\x58\xd1\x88\x9c\x9c\x38\xe7\xe3\x28"
        "\x95\xb1\x92\x1f\x8e\x4b\x4b\x41\xf3\xef\x0d\xeb\xac\x34\xb1\x9a\xa6"
        "\x87\x22\x1a\x6b\x94\x2e\xb3\x96\x15\x9e\xf6\xde\x96\x45\xe4\xb3\x38"
        "\x65\xd6\xb6\x2e\x56\x42\x77\xed\x35\x92\x35\x44\xb6\x37\x98\x22\x86"
        "\x1e\xc7\x9f\x42\x3c\x1b\x03\x72\xe2\xb2\x6b\xdb\xa8\x1f\xce\xa8\xc4"
        "\xd1\xeb\x65\x78\x69\xc8\x7c\x4d\x7c\xf2\xb1\x87\xc3\x87\xd6\x32\xe5"
        "\x8f\x44\x95\x6d\x2d\x7b\x16\xba\x93\x15\x35\x14\x08\x7b\x38\x67\x6f"
        "\x72\xca\xb9\xf6\x2f\x53\xf3\x31\xbb\x7f\x95\x2e\xf5\xab\x05\xe9\x40"
        "\x3a\xfa\x22\xe6\x57\x43\xc5\x83\xba\x30\x68\x3a\xc5\xe3\x01\x73\xcd"
        "\xb5\xc2\x16\xd8\x79\xea\xd8\xb3\xee\x56\xd6\x02\xa3\x9e\x33\xc6\x3b"
        "\xa2\x75\x4c\xcf\xe2\x31\xc2\xe1\xb6\x60\xf2\xa6\x8c\xc1\x4a\x91\x86"
        "\xee\x2e\x83\x4b\xe5\xf1\x0b\x09",
        263);
    memcpy(
        (void*)0x200000001cc0,
        "\x78\x9c\xec\xdd\x4f\x6c\x1c\xd7\x7d\x07\xf0\xdf\x1b\x2d\xc5\x95\xdc"
        "\x56\x4c\xec\x28\x4e\x1a\xb7\x9b\xa6\x48\x65\xc5\x72\xf5\x2f\xa6\x62"
        "\x15\xee\xaa\xa6\xd9\x06\x90\x65\x21\x14\x73\x0b\xc0\x95\xb8\x52\x17"
        "\xa6\x48\x82\xa4\x1a\xd9\x48\x0b\xa6\x97\x1e\x7a\x08\x50\x14\x3d\xe4"
        "\x44\xa0\x35\x0a\xa4\x68\x60\x34\x45\x90\x23\xd3\xba\x40\x72\xf1\xa1"
        "\xc8\xa9\x27\xa2\x85\x8d\xa0\xe8\x81\x6d\x03\xf8\x14\x30\x98\xd9\xb7"
        "\xe2\x92\xa2\x22\x5a\x14\x25\x4a\xfe\x7c\x6c\xea\xbb\x3b\xfb\xde\xec"
        "\x7b\x33\xab\x37\x14\xc1\x37\x2f\x00\x00\x00\x00\x00\x00\x00\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\x88\x3f\x78\xe5\xdc\xf1\x13\x69\xbb\xa5\x3f"
        "\x58\xdb\xdd\xd6\x00\x00\x0f\xc2\x85\xb1\xaf\x1c\x3f\xb9\xed\xeb\x3f"
        "\x00\xf0\x38\xb8\xf4\xa1\xfe\xfd\x0f\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x3c\x04\x29\x8a\x78\x32\x52\xcc\x5e\x58\x4d\x13\xd5\xf3"
        "\xae\xfa\xf9\xce\xc0\x8d\x9b\xe3\x23\xa3\x5b\x57\x3b\x90\xaa\x9a\xfb"
        "\xaa\xf2\xe5\x57\xfd\xc4\xc9\x53\xa7\xbf\xf8\xc2\xf0\x99\x5e\x9e\xef"
        "\x4c\xaf\xd7\x1f\xdc\xed\x6e\x7c\x3a\x5e\x1b\xbb\x74\xae\xf1\xf2\xcc"
        "\xf5\xd9\xb9\xf6\xfc\x7c\x7b\xb2\x31\x3e\xdd\xb9\x32\x33\xd9\xde\xf6"
        "\x1e\x76\x5a\x7f\xb3\xa3\xd5\x01\x68\x5c\x7f\xfd\xc6\xe4\xd5\xab\xf3"
        "\x8d\x93\xcf\x9f\xda\xf0\xf2\xcd\xa1\xf7\x07\x9f\x38\x3c\x74\x76\xf8"
        "\xd9\x63\xcf\xf4\xca\x8e\x8f\x8c\x8e\x8e\xad\x17\xa9\xf7\x97\xaf\xdd"
        "\x73\x43\xba\xee\x34\xc3\x63\x7f\x14\x71\x2c\x52\x3c\xf7\xdd\x9f\xa6"
        "\x56\x44\x14\xb1\xf3\x63\x51\xdf\x70\xee\x1f\xb8\x03\x55\x27\x8e\x56"
        "\x9d\x18\x1f\x19\xad\x3a\x32\xd5\x69\x4d\x2f\x94\x2f\x5e\xec\x1d\x88"
        "\x22\xa2\xd1\x57\xa9\xd9\x3b\x46\x5b\x9f\x8b\xa8\x0d\x3c\xd0\x3e\xdc"
        "\x59\x33\x62\xb1\x6c\x7e\xd9\xe0\xa3\x65\xf7\xc6\x66\x5b\x73\xad\xcb"
        "\x53\xed\xc6\xc5\xd6\xdc\x42\x67\xa1\x33\x33\x7d\x31\x75\x5b\x5b\xf6"
        "\xa7\x11\x45\x9c\x49\x11\x4b\x11\xb1\xb2\xc5\x5f\xc3\x81\x28\xa2\x16"
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        "\x73\xad\xcb\x53\xed\xc6\xc5\xd6\xdc\x42\x67\xa1\x33\x33\x7d\x31\x75"
        "\x5b\x5b\xf6\xa7\x11\x45\x9c\x49\x11\x4b\x11\xb1\x32\x78\xfb\xee\x06"
        "\xa2\x88\xd7\x23\xc5\xb7\x0f\xad\xa6\x7f\x19\x8c\xd8\xd7\x3b\x0e\x5f"
        "\xb8\x30\xf6\x95\xe3\x27\xef\xdc\x8e\x62\x17\xfb\xb8\x0d\x65\x3b\x1b"
        "\x03\x11\x4b\xc5\x23\x70\xce\xf6\xb0\xc1\x28\xe2\x9f\x23\xc5\xcf\xde"
        "\x39\x12\xff\x3a\x18\x51\x8b\xee\x57\x7c\x3e\xe2\xd5\x32\xbf\x1f\xf1"
        "\x56\x74\xcf\x77\x2a\x3f\x18\xa7\x23\xde\xdb\xe2\x73\xc4\xa3\xa9\x16"
        "\x45\xfc\x5f\x79\xfe\xcf\xae\xa6\x77\x06\xcb\xf1\xa0\x37\xae\x9c\xff"
        "\x6a\xe3\xcb\xd3\x57\x67\xfa\xca\xf6\xc6\x95\x47\xfe\xfa\xf0\x20\xed"
        "\xf1\xb1\xa9\x1e\x45\xfc\xa8\x1a\xf1\x57\xd3\xbf\xf9\x7b\x0d\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xb0\x87\x14\xf1\xeb\x91\xe2"
        "\xc5\x77\x8f\xa4\x6a\x7e\xf0\xad\x39\xc5\x9d\xe9\x6b\x8d\x4b\xad\xcb"
        "\x53\xdd\x69\x7d\xbd\xb9\x7f\xbd\x39\xd3\x6b\x6b\x6b\x6b\x8d\xd4\xcd"
        "\x66\xce\x89\x9c\x8b\x39\x97\x72\x2e\xe7\x5c\xc9\x19\x45\xae\x9f\xb3"
        "\x59\x66\x7d\x6d\x6d\x22\x3f\x5f\xcc\xb9\x94\x73\x39\xe7\x4a\xce\xd8"
        "\x97\xeb\xe7\x6c\xe6\x9c\xc8\xb9\x98\x73\x29\xe7\x72\xce\x95\x9c\x51"
        "\xcb\xf5\x73\x36\x73\x4e\xe4\x5c\xcc\xb9\x94\x73\x39\xe7\x4a\xce\xd8"
        "\x23\x73\xf7\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x80\xc7\x4b\x51\xfd\x97\xe2\x5b\x5f\x5f\x4d\x6b\x83\xdd\xf5\xa5\x27"
        "\xa2\x9b\xcb\xd6\x03\x7d\xec\xfd\x22\x00\x00\xff\xff\x62\x75\xf6\x7e",
        3145);
    syz_mount_image(/*fs=*/0x200000000080, /*dir=*/0x200000000100,
                    /*flags=MS_LAZYTIME|MS_POSIXACL|MS_REC*/ 0x2014000,
                    /*opts=*/0x200000000580, /*chdir=*/0x12, /*size=*/0xc49,
                    /*img=*/0x200000001cc0);
    break;
  case 1:
    //  openat arguments: [
    //    fd: fd_dir (resource)
    //    file: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
    //    }
    //    flags: open_flags = 0x42 (4 bytes)
    //    mode: open_mode = 0x0 (2 bytes)
    //  ]
    //  returns fd
    memcpy((void*)0x200000000040, "./file1\000", 8);
    res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000040ul,
                  /*flags=O_CREAT|O_RDWR*/ 0x42, /*mode=*/0);
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    //  pwrite64 arguments: [
    //    fd: fd (resource)
    //    buf: ptr[in, buffer] {
    //      buffer: {32} (length 0x1)
    //    }
    //    count: len = 0x1 (8 bytes)
    //    pos: intptr = 0x8080c61 (8 bytes)
    //  ]
    memset((void*)0x200000000140, 50, 1);
    syscall(__NR_pwrite64, /*fd=*/r[0], /*buf=*/0x200000000140ul, /*count=*/1ul,
            /*pos=*/0x8080c61ul);
    break;
  case 3:
    //  openat arguments: [
    //    fd: fd_dir (resource)
    //    file: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
    //    }
    //    flags: open_flags = 0x42 (4 bytes)
    //    mode: open_mode = 0x0 (2 bytes)
    //  ]
    //  returns fd
    memcpy((void*)0x200000000040, "./file1\000", 8);
    res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000040ul,
                  /*flags=O_CREAT|O_RDWR*/ 0x42, /*mode=*/0);
    if (res != -1)
      r[1] = res;
    break;
  case 4:
    //  pwrite64 arguments: [
    //    fd: fd (resource)
    //    buf: ptr[in, buffer] {
    //      buffer: {61} (length 0x1)
    //    }
    //    count: len = 0x200000c1 (8 bytes)
    //    pos: intptr = 0x9000 (8 bytes)
    //  ]
    memset((void*)0x2000000000c0, 97, 1);
    syscall(__NR_pwrite64, /*fd=*/r[1], /*buf=*/0x2000000000c0ul,
            /*count=*/0x200000c1ul, /*pos=*/0x9000ul);
    break;
  case 5:
    //  setrlimit arguments: [
    //    res: rlimit_type = 0x1 (8 bytes)
    //    rlim: ptr[in, rlimit] {
    //      rlimit {
    //        soft: intptr = 0xffffffffffffffff (8 bytes)
    //        hard: intptr = 0xffffffffffffffff (8 bytes)
    //      }
    //    }
    //  ]
    *(uint64_t*)0x200000000140 = -1;
    *(uint64_t*)0x200000000148 = -1;
    syscall(__NR_setrlimit, /*res=RLIMIT_FSIZE*/ 1ul,
            /*rlim=*/0x200000000140ul);
    break;
  case 6:
    //  truncate arguments: [
    //    file: ptr[in, buffer] {
    //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
    //    }
    //    len: intptr = 0x400000f007 (8 bytes)
    //  ]
    memcpy((void*)0x200000000080, "./file1\000", 8);
    syscall(__NR_truncate, /*file=*/0x200000000080ul, /*len=*/0x400000f007ul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}