// https://syzkaller.appspot.com/bug?id=be2e39518462291fd049f665261632ded34b79fd
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <arpa/inet.h>
#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <errno.h>
#include <fcntl.h>
#include <fcntl.h>
#include <linux/futex.h>
#include <linux/if.h>
#include <linux/if_ether.h>
#include <linux/if_tun.h>
#include <linux/ip.h>
#include <linux/net.h>
#include <linux/tcp.h>
#include <net/if_arp.h>
#include <netinet/in.h>
#include <pthread.h>
#include <signal.h>
#include <stdarg.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdio.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

__attribute__((noreturn)) static void doexit(int status)
{
  volatile unsigned i;
  syscall(__NR_exit_group, status);
  for (i = 0;; i++) {
  }
}
#include <errno.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>

const int kFailStatus = 67;
const int kRetryStatus = 69;

static void fail(const char* msg, ...)
{
  int e = errno;
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus);
}

static void exitf(const char* msg, ...)
{
  int e = errno;
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit(kRetryStatus);
}

#define BITMASK_LEN(type, bf_len) (type)((1ull << (bf_len)) - 1)

#define BITMASK_LEN_OFF(type, bf_off, bf_len)                                  \
  (type)(BITMASK_LEN(type, (bf_len)) << (bf_off))

#define STORE_BY_BITMASK(type, addr, val, bf_off, bf_len)                      \
  if ((bf_off) == 0 && (bf_len) == 0) {                                        \
    *(type*)(addr) = (type)(val);                                              \
  } else {                                                                     \
    type new_val = *(type*)(addr);                                             \
    new_val &= ~BITMASK_LEN_OFF(type, (bf_off), (bf_len));                     \
    new_val |= ((type)(val)&BITMASK_LEN(type, (bf_len))) << (bf_off);          \
    *(type*)(addr) = new_val;                                                  \
  }

static uint64_t current_time_ms()
{
  struct timespec ts;

  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    fail("clock_gettime failed");
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

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

static void vsnprintf_check(char* str, size_t size, const char* format,
                            va_list args)
{
  int rv;

  rv = vsnprintf(str, size, format, args);
  if (rv < 0)
    fail("tun: snprintf failed");
  if ((size_t)rv >= size)
    fail("tun: string '%s...' doesn't fit into buffer", str);
}

static void snprintf_check(char* str, size_t size, const char* format, ...)
{
  va_list args;

  va_start(args, format);
  vsnprintf_check(str, size, format, args);
  va_end(args);
}

#define COMMAND_MAX_LEN 128
#define PATH_PREFIX                                                            \
  "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin "
#define PATH_PREFIX_LEN (sizeof(PATH_PREFIX) - 1)

static void execute_command(bool panic, const char* format, ...)
{
  va_list args;
  char command[PATH_PREFIX_LEN + COMMAND_MAX_LEN];
  int rv;

  va_start(args, format);
  memcpy(command, PATH_PREFIX, PATH_PREFIX_LEN);
  vsnprintf_check(command + PATH_PREFIX_LEN, COMMAND_MAX_LEN, format, args);
  rv = system(command);
  if (panic && rv != 0)
    fail("tun: command \"%s\" failed with code %d", &command[0], rv);

  va_end(args);
}

static int tunfd = -1;
static int tun_frags_enabled;

#define SYZ_TUN_MAX_PACKET_SIZE 1000

#define MAX_PIDS 32
#define ADDR_MAX_LEN 32

#define LOCAL_MAC "aa:aa:aa:aa:%02hx:aa"
#define REMOTE_MAC "aa:aa:aa:aa:%02hx:bb"

#define LOCAL_IPV4 "172.20.%d.170"
#define REMOTE_IPV4 "172.20.%d.187"

#define LOCAL_IPV6 "fe80::%02hx:aa"
#define REMOTE_IPV6 "fe80::%02hx:bb"

#define IFF_NAPI 0x0010
#define IFF_NAPI_FRAGS 0x0020

static void initialize_tun(int id)
{
  if (id >= MAX_PIDS)
    fail("tun: no more than %d executors", MAX_PIDS);

  tunfd = open("/dev/net/tun", O_RDWR | O_NONBLOCK);
  if (tunfd == -1) {
    printf("tun: can't open /dev/net/tun: please enable CONFIG_TUN=y\n");
    printf("otherwise fuzzing or reproducing might not work as intended\n");
    return;
  }

  char iface[IFNAMSIZ];
  snprintf_check(iface, sizeof(iface), "syz%d", id);

  struct ifreq ifr;
  memset(&ifr, 0, sizeof(ifr));
  strncpy(ifr.ifr_name, iface, IFNAMSIZ);
  ifr.ifr_flags = IFF_TAP | IFF_NO_PI | IFF_NAPI | IFF_NAPI_FRAGS;
  if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0) {
    ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
    if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0)
      fail("tun: ioctl(TUNSETIFF) failed");
  }
  if (ioctl(tunfd, TUNGETIFF, (void*)&ifr) < 0)
    fail("tun: ioctl(TUNGETIFF) failed");
  tun_frags_enabled = (ifr.ifr_flags & IFF_NAPI_FRAGS) != 0;

  char local_mac[ADDR_MAX_LEN];
  snprintf_check(local_mac, sizeof(local_mac), LOCAL_MAC, id);
  char remote_mac[ADDR_MAX_LEN];
  snprintf_check(remote_mac, sizeof(remote_mac), REMOTE_MAC, id);

  char local_ipv4[ADDR_MAX_LEN];
  snprintf_check(local_ipv4, sizeof(local_ipv4), LOCAL_IPV4, id);
  char remote_ipv4[ADDR_MAX_LEN];
  snprintf_check(remote_ipv4, sizeof(remote_ipv4), REMOTE_IPV4, id);

  char local_ipv6[ADDR_MAX_LEN];
  snprintf_check(local_ipv6, sizeof(local_ipv6), LOCAL_IPV6, id);
  char remote_ipv6[ADDR_MAX_LEN];
  snprintf_check(remote_ipv6, sizeof(remote_ipv6), REMOTE_IPV6, id);

  execute_command(1, "sysctl -w net.ipv6.conf.%s.accept_dad=0", iface);

  execute_command(1, "sysctl -w net.ipv6.conf.%s.router_solicitations=0",
                  iface);

  execute_command(1, "ip link set dev %s address %s", iface, local_mac);
  execute_command(1, "ip addr add %s/24 dev %s", local_ipv4, iface);
  execute_command(1, "ip -6 addr add %s/120 dev %s", local_ipv6, iface);
  execute_command(1, "ip neigh add %s lladdr %s dev %s nud permanent",
                  remote_ipv4, remote_mac, iface);
  execute_command(1, "ip -6 neigh add %s lladdr %s dev %s nud permanent",
                  remote_ipv6, remote_mac, iface);
  execute_command(1, "ip link set dev %s up", iface);
}

#define DEV_IPV4 "172.20.%d.%d"
#define DEV_IPV6 "fe80::%02hx:%02hx"
#define DEV_MAC "aa:aa:aa:aa:%02hx:%02hx"

static void initialize_netdevices(int id)
{
  unsigned i;
  const char* devtypes[] = {"ip6gretap", "bridge", "vcan"};
  const char* devnames[] = {"lo",       "sit0",    "bridge0", "vcan0",
                            "tunl0",    "gre0",    "gretap0", "ip_vti0",
                            "ip6_vti0", "ip6tnl0", "ip6gre0", "ip6gretap0",
                            "erspan0"};

  for (i = 0; i < sizeof(devtypes) / (sizeof(devtypes[0])); i++)
    execute_command(0, "ip link add dev %s0 type %s", devtypes[i], devtypes[i]);
  for (i = 0; i < sizeof(devnames) / (sizeof(devnames[0])); i++) {
    char addr[ADDR_MAX_LEN];
    snprintf_check(addr, sizeof(addr), DEV_IPV4, id, id + 10);
    execute_command(0, "ip -4 addr add %s/24 dev %s", addr, devnames[i]);
    snprintf_check(addr, sizeof(addr), DEV_IPV6, id, id + 10);
    execute_command(0, "ip -6 addr add %s/120 dev %s", addr, devnames[i]);
    snprintf_check(addr, sizeof(addr), DEV_MAC, id, id + 10);
    execute_command(0, "ip link set dev %s address %s", devnames[i], addr);
    execute_command(0, "ip link set dev %s up", devnames[i]);
  }
}

static void setup_tun(uint64_t pid, bool enable_tun)
{
  if (enable_tun) {
    initialize_tun(pid);
    initialize_netdevices(pid);
  }
}

static int read_tun(char* data, int size)
{
  if (tunfd < 0)
    return -1;

  int rv = read(tunfd, data, size);
  if (rv < 0) {
    if (errno == EAGAIN)
      return -1;
    if (errno == EBADFD)
      return -1;
    fail("tun: read failed with %d", rv);
  }
  return rv;
}

static void flush_tun()
{
  char data[SYZ_TUN_MAX_PACKET_SIZE];
  while (read_tun(&data[0], sizeof(data)) != -1)
    ;
}

static uintptr_t syz_open_procfs(uintptr_t a0, uintptr_t a1)
{

  char buf[128];
  memset(buf, 0, sizeof(buf));
  if (a0 == 0) {
    snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1);
  } else if (a0 == (uintptr_t)-1) {
    snprintf(buf, sizeof(buf), "/proc/thread-self/%s", (char*)a1);
  } else {
    snprintf(buf, sizeof(buf), "/proc/self/task/%d/%s", (int)a0, (char*)a1);
  }
  int fd = open(buf, O_RDWR);
  if (fd == -1)
    fd = open(buf, O_RDONLY);
  return fd;
}

struct ipt_getinfo {
  char name[32];
  unsigned int valid_hooks;
  unsigned int hook_entry[5];
  unsigned int underflow[5];
  unsigned int num_entries;
  unsigned int size;
};

struct ipt_get_entries {
  char name[32];
  unsigned int size;
  void* entrytable[1024 / sizeof(void*)];
};

struct xt_counters {
  uint64_t pcnt, bcnt;
};

struct ipt_replace {
  char name[32];
  unsigned int valid_hooks;
  unsigned int num_entries;
  unsigned int size;
  unsigned int hook_entry[5];
  unsigned int underflow[5];
  unsigned int num_counters;
  struct xt_counters* counters;
  char entrytable[1024];
};

struct ipt_table_desc {
  const char* name;
  struct ipt_getinfo info;
  struct ipt_get_entries entries;
  struct ipt_replace replace;
  struct xt_counters counters[10];
};

static struct ipt_table_desc ipv4_tables[] = {
    {.name = "filter"}, {.name = "nat"},      {.name = "mangle"},
    {.name = "raw"},    {.name = "security"},
};

#define IPT_BASE_CTL 64
#define IPT_SO_SET_REPLACE (IPT_BASE_CTL)
#define IPT_SO_GET_INFO (IPT_BASE_CTL)
#define IPT_SO_GET_ENTRIES (IPT_BASE_CTL + 1)

static void checkpoint_net_namespace(void)
{
  socklen_t optlen;
  unsigned i;
  int fd;

  fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1)
    fail("socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)");
  for (i = 0; i < sizeof(ipv4_tables) / sizeof(ipv4_tables[0]); i++) {
    struct ipt_table_desc* table = &ipv4_tables[i];
    strcpy(table->info.name, table->name);
    strcpy(table->entries.name, table->name);
    strcpy(table->replace.name, table->name);
    optlen = sizeof(table->info);
    if (getsockopt(fd, SOL_IP, IPT_SO_GET_INFO, &table->info, &optlen)) {
      switch (errno) {
      case EPERM:
      case ENOENT:
      case ENOPROTOOPT:
        continue;
      }
      fail("getsockopt(IPT_SO_GET_INFO)");
    }
    if (table->info.size > sizeof(table->entries.entrytable))
      fail("table size is too large: %u", table->info.size);
    if (table->info.num_entries >
        sizeof(table->counters) / sizeof(table->counters[0]))
      fail("too many counters: %u", table->info.num_entries);
    table->entries.size = table->info.size;
    optlen = sizeof(table->entries) - sizeof(table->entries.entrytable) +
             table->info.size;
    if (getsockopt(fd, SOL_IP, IPT_SO_GET_ENTRIES, &table->entries, &optlen))
      fail("getsockopt(IPT_SO_GET_ENTRIES)");
    table->replace.valid_hooks = table->info.valid_hooks;
    table->replace.num_entries = table->info.num_entries;
    table->replace.counters = table->counters;
    table->replace.size = table->info.size;
    memcpy(table->replace.hook_entry, table->info.hook_entry,
           sizeof(table->replace.hook_entry));
    memcpy(table->replace.underflow, table->info.underflow,
           sizeof(table->replace.underflow));
    memcpy(table->replace.entrytable, table->entries.entrytable,
           table->info.size);
  }
  close(fd);
}

static void reset_net_namespace(void)
{
  struct ipt_get_entries entries;
  struct ipt_getinfo info;
  socklen_t optlen;
  unsigned i;
  int fd;

  memset(&info, 0, sizeof(info));
  memset(&entries, 0, sizeof(entries));
  fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1)
    fail("socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)");
  for (i = 0; i < sizeof(ipv4_tables) / sizeof(ipv4_tables[0]); i++) {
    struct ipt_table_desc* table = &ipv4_tables[i];
    if (table->info.valid_hooks == 0)
      continue;
    strcpy(info.name, table->name);
    optlen = sizeof(info);
    if (getsockopt(fd, SOL_IP, IPT_SO_GET_INFO, &info, &optlen))
      fail("getsockopt(IPT_SO_GET_INFO)");
    if (memcmp(&table->info, &info, sizeof(table->info)) == 0) {
      strcpy(entries.name, table->name);
      entries.size = table->info.size;
      optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size;
      if (getsockopt(fd, SOL_IP, IPT_SO_GET_ENTRIES, &entries, &optlen))
        fail("getsockopt(IPT_SO_GET_ENTRIES)");
      if (memcmp(&table->entries, &entries, optlen) == 0)
        continue;
    }
    table->replace.num_counters = info.num_entries;
    optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) +
             table->replace.size;
    if (setsockopt(fd, SOL_IP, IPT_SO_SET_REPLACE, &table->replace, optlen))
      fail("setsockopt(IPT_SO_SET_REPLACE)");
  }
  close(fd);
}

static void remove_dir(const char* dir)
{
  DIR* dp;
  struct dirent* ep;
  int iter = 0;
retry:
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exitf("opendir(%s) failed due to NOFILE, exiting", dir);
    }
    exitf("opendir(%s) failed", dir);
  }
  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);
    struct stat st;
    if (lstat(filename, &st))
      exitf("lstat(%s) failed", filename);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      if (unlink(filename) == 0)
        break;
      if (errno == EROFS) {
        break;
      }
      if (errno != EBUSY || i > 100)
        exitf("unlink(%s) failed", filename);
      if (umount2(filename, MNT_DETACH))
        exitf("umount(%s) failed", filename);
    }
  }
  closedir(dp);
  int i;
  for (i = 0;; i++) {
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EROFS) {
        break;
      }
      if (errno == EBUSY) {
        if (umount2(dir, MNT_DETACH))
          exitf("umount(%s) failed", dir);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exitf("rmdir(%s) failed", dir);
  }
}

static void test();

void loop()
{
  int iter;
  checkpoint_net_namespace();
  for (iter = 0;; iter++) {
    char cwdbuf[256];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      fail("failed to mkdir");
    int pid = fork();
    if (pid < 0)
      fail("loop fork failed");
    if (pid == 0) {
      prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
      setpgrp();
      if (chdir(cwdbuf))
        fail("failed to chdir");
      flush_tun();
      test();
      doexit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      int res = waitpid(-1, &status, __WALL | WNOHANG);
      if (res == pid)
        break;
      usleep(1000);
      if (current_time_ms() - start > 5 * 1000) {
        kill(-pid, SIGKILL);
        kill(pid, SIGKILL);
        while (waitpid(-1, &status, __WALL) != pid) {
        }
        break;
      }
    }
    remove_dir(cwdbuf);
    reset_net_namespace();
  }
}

struct thread_t {
  int created, running, call;
  pthread_t th;
};

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

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    while (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE))
      syscall(SYS_futex, &th->running, FUTEX_WAIT, 0, 0);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    __atomic_store_n(&th->running, 0, __ATOMIC_RELEASE);
    syscall(SYS_futex, &th->running, FUTEX_WAKE);
  }
  return 0;
}

static void execute(int num_calls)
{
  int call, thread;
  running = 0;
  for (call = 0; call < num_calls; call++) {
    for (thread = 0; thread < sizeof(threads) / sizeof(threads[0]); thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        pthread_attr_t attr;
        pthread_attr_init(&attr);
        pthread_attr_setstacksize(&attr, 128 << 10);
        pthread_create(&th->th, &attr, thr, th);
      }
      if (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE)) {
        th->call = call;
        __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        __atomic_store_n(&th->running, 1, __ATOMIC_RELEASE);
        syscall(SYS_futex, &th->running, FUTEX_WAKE);
        if (collide && call % 2)
          break;
        struct timespec ts;
        ts.tv_sec = 0;
        ts.tv_nsec = 20 * 1000 * 1000;
        syscall(SYS_futex, &th->running, FUTEX_WAIT, 1, &ts);
        if (running)
          usleep((call == num_calls - 1) ? 10000 : 1000);
        break;
      }
    }
  }
}

long r[4];
void execute_call(int call)
{
  switch (call) {
  case 0:
    syscall(__NR_mmap, 0x20000000, 0x18000, 3, 0x32, -1, 0);
    break;
  case 1:
    syscall(__NR_mmap, 0x20018000, 0x1000, 3, 0x32, -1, 0);
    break;
  case 2:
    syscall(__NR_mmap, 0x20019000, 0x1000, 3, 0x32, -1, 0);
    break;
  case 3:
    memcpy((void*)0x20005ff0, "/selinux/policy", 16);
    r[0] = syscall(__NR_openat, 0xffffffffffffff9c, 0x20005ff0, 0, 0);
    break;
  case 4:
    *(uint32_t*)0x2000ef44 = 0x7ff;
    *(uint32_t*)0x2000ef48 = 0;
    memcpy((void*)0x2000ef4c,
           "\x63\x6c\x69\x65\x6e\x74\x31\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
           64);
    *(uint32_t*)0x2000ef8c = 0x80000000;
    memcpy((void*)0x2000ef90, "\x84\x72\x34\x95\x4a\x0e\x68\x49", 8);
    memcpy((void*)0x2000ef98, "\x22\x2c\xb5\x24\xe7\x7f\x21\x6f\x05\x09\x9e\x90"
                              "\x64\xfd\x91\x29\xd5\xe3\x77\x47\x51\xb4\xbb\xbe"
                              "\x24\x27\x56\xb1\x4a\x12\x08\x6b",
           32);
    *(uint32_t*)0x2000efb8 = 0x1ff;
    *(uint32_t*)0x2000efbc = 3;
    *(uint8_t*)0x2000efc0 = 0;
    *(uint8_t*)0x2000efc1 = 0;
    *(uint8_t*)0x2000efc2 = 0;
    *(uint8_t*)0x2000efc3 = 0;
    *(uint8_t*)0x2000efc4 = 0;
    *(uint8_t*)0x2000efc5 = 0;
    *(uint8_t*)0x2000efc6 = 0;
    *(uint8_t*)0x2000efc7 = 0;
    *(uint8_t*)0x2000efc8 = 0;
    *(uint8_t*)0x2000efc9 = 0;
    *(uint8_t*)0x2000efca = 0;
    *(uint8_t*)0x2000efcb = 0;
    *(uint8_t*)0x2000efcc = 0;
    *(uint8_t*)0x2000efcd = 0;
    *(uint8_t*)0x2000efce = 0;
    *(uint8_t*)0x2000efcf = 0;
    *(uint8_t*)0x2000efd0 = 0;
    *(uint8_t*)0x2000efd1 = 0;
    *(uint8_t*)0x2000efd2 = 0;
    *(uint8_t*)0x2000efd3 = 0;
    *(uint8_t*)0x2000efd4 = 0;
    *(uint8_t*)0x2000efd5 = 0;
    *(uint8_t*)0x2000efd6 = 0;
    *(uint8_t*)0x2000efd7 = 0;
    *(uint8_t*)0x2000efd8 = 0;
    *(uint8_t*)0x2000efd9 = 0;
    *(uint8_t*)0x2000efda = 0;
    *(uint8_t*)0x2000efdb = 0;
    *(uint8_t*)0x2000efdc = 0;
    *(uint8_t*)0x2000efdd = 0;
    *(uint8_t*)0x2000efde = 0;
    *(uint8_t*)0x2000efdf = 0;
    *(uint8_t*)0x2000efe0 = 0;
    *(uint8_t*)0x2000efe1 = 0;
    *(uint8_t*)0x2000efe2 = 0;
    *(uint8_t*)0x2000efe3 = 0;
    *(uint8_t*)0x2000efe4 = 0;
    *(uint8_t*)0x2000efe5 = 0;
    *(uint8_t*)0x2000efe6 = 0;
    *(uint8_t*)0x2000efe7 = 0;
    *(uint8_t*)0x2000efe8 = 0;
    *(uint8_t*)0x2000efe9 = 0;
    *(uint8_t*)0x2000efea = 0;
    *(uint8_t*)0x2000efeb = 0;
    *(uint8_t*)0x2000efec = 0;
    *(uint8_t*)0x2000efed = 0;
    *(uint8_t*)0x2000efee = 0;
    *(uint8_t*)0x2000efef = 0;
    *(uint8_t*)0x2000eff0 = 0;
    *(uint8_t*)0x2000eff1 = 0;
    *(uint8_t*)0x2000eff2 = 0;
    *(uint8_t*)0x2000eff3 = 0;
    *(uint8_t*)0x2000eff4 = 0;
    *(uint8_t*)0x2000eff5 = 0;
    *(uint8_t*)0x2000eff6 = 0;
    *(uint8_t*)0x2000eff7 = 0;
    *(uint8_t*)0x2000eff8 = 0;
    *(uint8_t*)0x2000eff9 = 0;
    *(uint8_t*)0x2000effa = 0;
    *(uint8_t*)0x2000effb = 0;
    *(uint8_t*)0x2000effc = 0;
    *(uint8_t*)0x2000effd = 0;
    *(uint8_t*)0x2000effe = 0;
    *(uint8_t*)0x2000efff = 0;
    syscall(__NR_ioctl, r[0], 0xc0bc5351, 0x2000ef44);
    break;
  case 5:
    r[1] = syscall(__NR_socket, 2, 0x80005, 0);
    break;
  case 6:
    syscall(__NR_ftruncate, r[1], 0xfffffffffffffff9);
    break;
  case 7:
    memcpy((void*)0x20014bd0, "\x66\x69\x6c\x74\x65\x72\x00\x00\x00\x00\x00\x00"
                              "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                              "\x00\x00\x00\x00\x00\x00\x00\x00",
           32);
    *(uint32_t*)0x20014bf0 = 0xe;
    *(uint32_t*)0x20014bf4 = 4;
    *(uint32_t*)0x20014bf8 = 0xfffffccc;
    *(uint32_t*)0x20014bfc = -1;
    *(uint32_t*)0x20014c00 = 0;
    *(uint32_t*)0x20014c04 = 0;
    *(uint32_t*)0x20014c08 = 0;
    *(uint32_t*)0x20014c0c = -1;
    *(uint32_t*)0x20014c10 = -1;
    *(uint32_t*)0x20014c14 = 0;
    *(uint32_t*)0x20014c18 = 0;
    *(uint32_t*)0x20014c1c = 0;
    *(uint32_t*)0x20014c20 = -1;
    *(uint32_t*)0x20014c24 = 4;
    *(uint64_t*)0x20014c28 = 0x20001000;
    *(uint8_t*)0x20014c30 = 0;
    *(uint8_t*)0x20014c31 = 0;
    *(uint8_t*)0x20014c32 = 0;
    *(uint8_t*)0x20014c33 = 0;
    *(uint8_t*)0x20014c34 = 0;
    *(uint8_t*)0x20014c35 = 0;
    *(uint8_t*)0x20014c36 = 0;
    *(uint8_t*)0x20014c37 = 0;
    *(uint8_t*)0x20014c38 = 0;
    *(uint8_t*)0x20014c39 = 0;
    *(uint8_t*)0x20014c3a = 0;
    *(uint8_t*)0x20014c3b = 0;
    *(uint8_t*)0x20014c3c = 0;
    *(uint8_t*)0x20014c3d = 0;
    *(uint8_t*)0x20014c3e = 0;
    *(uint8_t*)0x20014c3f = 0;
    *(uint8_t*)0x20014c40 = 0;
    *(uint8_t*)0x20014c41 = 0;
    *(uint8_t*)0x20014c42 = 0;
    *(uint8_t*)0x20014c43 = 0;
    *(uint8_t*)0x20014c44 = 0;
    *(uint8_t*)0x20014c45 = 0;
    *(uint8_t*)0x20014c46 = 0;
    *(uint8_t*)0x20014c47 = 0;
    *(uint8_t*)0x20014c48 = 0;
    *(uint8_t*)0x20014c49 = 0;
    *(uint8_t*)0x20014c4a = 0;
    *(uint8_t*)0x20014c4b = 0;
    *(uint8_t*)0x20014c4c = 0;
    *(uint8_t*)0x20014c4d = 0;
    *(uint8_t*)0x20014c4e = 0;
    *(uint8_t*)0x20014c4f = 0;
    *(uint8_t*)0x20014c50 = 0;
    *(uint8_t*)0x20014c51 = 0;
    *(uint8_t*)0x20014c52 = 0;
    *(uint8_t*)0x20014c53 = 0;
    *(uint8_t*)0x20014c54 = 0;
    *(uint8_t*)0x20014c55 = 0;
    *(uint8_t*)0x20014c56 = 0;
    *(uint8_t*)0x20014c57 = 0;
    *(uint8_t*)0x20014c58 = 0;
    *(uint8_t*)0x20014c59 = 0;
    *(uint8_t*)0x20014c5a = 0;
    *(uint8_t*)0x20014c5b = 0;
    *(uint8_t*)0x20014c5c = 0;
    *(uint8_t*)0x20014c5d = 0;
    *(uint8_t*)0x20014c5e = 0;
    *(uint8_t*)0x20014c5f = 0;
    *(uint8_t*)0x20014c60 = 0;
    *(uint8_t*)0x20014c61 = 0;
    *(uint8_t*)0x20014c62 = 0;
    *(uint8_t*)0x20014c63 = 0;
    *(uint8_t*)0x20014c64 = 0;
    *(uint8_t*)0x20014c65 = 0;
    *(uint8_t*)0x20014c66 = 0;
    *(uint8_t*)0x20014c67 = 0;
    *(uint8_t*)0x20014c68 = 0;
    *(uint8_t*)0x20014c69 = 0;
    *(uint8_t*)0x20014c6a = 0;
    *(uint8_t*)0x20014c6b = 0;
    *(uint8_t*)0x20014c6c = 0;
    *(uint8_t*)0x20014c6d = 0;
    *(uint8_t*)0x20014c6e = 0;
    *(uint8_t*)0x20014c6f = 0;
    *(uint8_t*)0x20014c70 = 0;
    *(uint8_t*)0x20014c71 = 0;
    *(uint8_t*)0x20014c72 = 0;
    *(uint8_t*)0x20014c73 = 0;
    *(uint8_t*)0x20014c74 = 0;
    *(uint8_t*)0x20014c75 = 0;
    *(uint8_t*)0x20014c76 = 0;
    *(uint8_t*)0x20014c77 = 0;
    *(uint8_t*)0x20014c78 = 0;
    *(uint8_t*)0x20014c79 = 0;
    *(uint8_t*)0x20014c7a = 0;
    *(uint8_t*)0x20014c7b = 0;
    *(uint8_t*)0x20014c7c = 0;
    *(uint8_t*)0x20014c7d = 0;
    *(uint8_t*)0x20014c7e = 0;
    *(uint8_t*)0x20014c7f = 0;
    *(uint8_t*)0x20014c80 = 0;
    *(uint8_t*)0x20014c81 = 0;
    *(uint8_t*)0x20014c82 = 0;
    *(uint8_t*)0x20014c83 = 0;
    *(uint32_t*)0x20014c84 = 0;
    *(uint16_t*)0x20014c88 = 0x70;
    *(uint16_t*)0x20014c8a = 0x98;
    *(uint32_t*)0x20014c8c = 0;
    *(uint64_t*)0x20014c90 = 0;
    *(uint64_t*)0x20014c98 = 0;
    *(uint16_t*)0x20014ca0 = 0x28;
    memcpy((void*)0x20014ca2, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                              "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                              "\x00\x00\x00\x00\x00",
           29);
    *(uint8_t*)0x20014cbf = 0;
    *(uint32_t*)0x20014cc0 = 0xfffffffe;
    *(uint32_t*)0x20014cc8 = htobe32(-1);
    *(uint32_t*)0x20014ccc = htobe32(0xe0000001);
    *(uint32_t*)0x20014cd0 = htobe32(-1);
    *(uint32_t*)0x20014cd4 = htobe32(0xff000000);
    memcpy((void*)0x20014cd8,
           "\xfa\x5e\xa1\xe8\x53\x4f\x88\x6f\x89\xfd\xaf\xae\x6a\x8f\x7b\x2f",
           16);
    memcpy((void*)0x20014ce8,
           "\xb4\x41\x1f\x31\xd2\xb4\x73\x55\x74\xdc\xa3\xa5\x42\x23\x90\x2e",
           16);
    *(uint8_t*)0x20014cf8 = -1;
    *(uint8_t*)0x20014cf9 = 0;
    *(uint8_t*)0x20014cfa = 0;
    *(uint8_t*)0x20014cfb = 0;
    *(uint8_t*)0x20014cfc = 0;
    *(uint8_t*)0x20014cfd = 0;
    *(uint8_t*)0x20014cfe = 0;
    *(uint8_t*)0x20014cff = 0;
    *(uint8_t*)0x20014d00 = 0;
    *(uint8_t*)0x20014d01 = 0;
    *(uint8_t*)0x20014d02 = 0;
    *(uint8_t*)0x20014d03 = 0;
    *(uint8_t*)0x20014d04 = 0;
    *(uint8_t*)0x20014d05 = 0;
    *(uint8_t*)0x20014d06 = 0;
    *(uint8_t*)0x20014d07 = 0;
    *(uint8_t*)0x20014d08 = -1;
    *(uint8_t*)0x20014d09 = 0;
    *(uint8_t*)0x20014d0a = 0;
    *(uint8_t*)0x20014d0b = 0;
    *(uint8_t*)0x20014d0c = 0;
    *(uint8_t*)0x20014d0d = 0;
    *(uint8_t*)0x20014d0e = 0;
    *(uint8_t*)0x20014d0f = 0;
    *(uint8_t*)0x20014d10 = 0;
    *(uint8_t*)0x20014d11 = 0;
    *(uint8_t*)0x20014d12 = 0;
    *(uint8_t*)0x20014d13 = 0;
    *(uint8_t*)0x20014d14 = 0;
    *(uint8_t*)0x20014d15 = 0;
    *(uint8_t*)0x20014d16 = 0;
    *(uint8_t*)0x20014d17 = 0;
    *(uint16_t*)0x20014d18 = 0x62;
    *(uint8_t*)0x20014d1a = 0xc0;
    *(uint8_t*)0x20014d1b = 2;
    *(uint32_t*)0x20014d1c = 0;
    *(uint16_t*)0x20014d20 = 0x70;
    *(uint16_t*)0x20014d22 = 0x98;
    *(uint32_t*)0x20014d24 = 0;
    *(uint64_t*)0x20014d28 = 0;
    *(uint64_t*)0x20014d30 = 0;
    *(uint16_t*)0x20014d38 = 0x28;
    memcpy((void*)0x20014d3a, "\x52\x45\x4a\x45\x43\x54\x00\x00\x00\x00\x00\x00"
                              "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                              "\x00\x00\x00\x00\x00",
           29);
    *(uint8_t*)0x20014d57 = 0;
    *(uint32_t*)0x20014d58 = 0;
    *(uint8_t*)0x20014d60 = 0;
    *(uint8_t*)0x20014d61 = 0;
    *(uint8_t*)0x20014d62 = 0;
    *(uint8_t*)0x20014d63 = 0;
    *(uint8_t*)0x20014d64 = 0;
    *(uint8_t*)0x20014d65 = 0;
    *(uint8_t*)0x20014d66 = 0;
    *(uint8_t*)0x20014d67 = 0;
    *(uint8_t*)0x20014d68 = 0;
    *(uint8_t*)0x20014d69 = 0;
    *(uint8_t*)0x20014d6a = 0;
    *(uint8_t*)0x20014d6b = 0;
    *(uint8_t*)0x20014d6c = 0;
    *(uint8_t*)0x20014d6d = 0;
    *(uint8_t*)0x20014d6e = 0;
    *(uint8_t*)0x20014d6f = 0;
    *(uint8_t*)0x20014d70 = 0;
    *(uint8_t*)0x20014d71 = 0;
    *(uint8_t*)0x20014d72 = 0;
    *(uint8_t*)0x20014d73 = 0;
    *(uint8_t*)0x20014d74 = 0;
    *(uint8_t*)0x20014d75 = 0;
    *(uint8_t*)0x20014d76 = 0;
    *(uint8_t*)0x20014d77 = 0;
    *(uint8_t*)0x20014d78 = 0;
    *(uint8_t*)0x20014d79 = 0;
    *(uint8_t*)0x20014d7a = 0;
    *(uint8_t*)0x20014d7b = 0;
    *(uint8_t*)0x20014d7c = 0;
    *(uint8_t*)0x20014d7d = 0;
    *(uint8_t*)0x20014d7e = 0;
    *(uint8_t*)0x20014d7f = 0;
    *(uint8_t*)0x20014d80 = 0;
    *(uint8_t*)0x20014d81 = 0;
    *(uint8_t*)0x20014d82 = 0;
    *(uint8_t*)0x20014d83 = 0;
    *(uint8_t*)0x20014d84 = 0;
    *(uint8_t*)0x20014d85 = 0;
    *(uint8_t*)0x20014d86 = 0;
    *(uint8_t*)0x20014d87 = 0;
    *(uint8_t*)0x20014d88 = 0;
    *(uint8_t*)0x20014d89 = 0;
    *(uint8_t*)0x20014d8a = 0;
    *(uint8_t*)0x20014d8b = 0;
    *(uint8_t*)0x20014d8c = 0;
    *(uint8_t*)0x20014d8d = 0;
    *(uint8_t*)0x20014d8e = 0;
    *(uint8_t*)0x20014d8f = 0;
    *(uint8_t*)0x20014d90 = 0;
    *(uint8_t*)0x20014d91 = 0;
    *(uint8_t*)0x20014d92 = 0;
    *(uint8_t*)0x20014d93 = 0;
    *(uint8_t*)0x20014d94 = 0;
    *(uint8_t*)0x20014d95 = 0;
    *(uint8_t*)0x20014d96 = 0;
    *(uint8_t*)0x20014d97 = 0;
    *(uint8_t*)0x20014d98 = 0;
    *(uint8_t*)0x20014d99 = 0;
    *(uint8_t*)0x20014d9a = 0;
    *(uint8_t*)0x20014d9b = 0;
    *(uint8_t*)0x20014d9c = 0;
    *(uint8_t*)0x20014d9d = 0;
    *(uint8_t*)0x20014d9e = 0;
    *(uint8_t*)0x20014d9f = 0;
    *(uint8_t*)0x20014da0 = 0;
    *(uint8_t*)0x20014da1 = 0;
    *(uint8_t*)0x20014da2 = 0;
    *(uint8_t*)0x20014da3 = 0;
    *(uint8_t*)0x20014da4 = 0;
    *(uint8_t*)0x20014da5 = 0;
    *(uint8_t*)0x20014da6 = 0;
    *(uint8_t*)0x20014da7 = 0;
    *(uint8_t*)0x20014da8 = 0;
    *(uint8_t*)0x20014da9 = 0;
    *(uint8_t*)0x20014daa = 0;
    *(uint8_t*)0x20014dab = 0;
    *(uint8_t*)0x20014dac = 0;
    *(uint8_t*)0x20014dad = 0;
    *(uint8_t*)0x20014dae = 0;
    *(uint8_t*)0x20014daf = 0;
    *(uint8_t*)0x20014db0 = 0;
    *(uint8_t*)0x20014db1 = 0;
    *(uint8_t*)0x20014db2 = 0;
    *(uint8_t*)0x20014db3 = 0;
    *(uint32_t*)0x20014db4 = 0;
    *(uint16_t*)0x20014db8 = 0x1c8;
    *(uint16_t*)0x20014dba = 0x1f0;
    *(uint32_t*)0x20014dbc = 0;
    *(uint64_t*)0x20014dc0 = 0;
    *(uint64_t*)0x20014dc8 = 0;
    *(uint16_t*)0x20014dd0 = 0x158;
    memcpy((void*)0x20014dd2, "\x68\x61\x73\x68\x6c\x69\x6d\x69\x74\x00\x00\x00"
                              "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                              "\x00\x00\x00\x00\x00",
           29);
    *(uint8_t*)0x20014def = 3;
    memcpy((void*)0x20014df0,
           "\x69\x70\x36\x74\x6e\x6c\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
           255);
    *(uint64_t*)0x20014ef0 = 0x800;
    *(uint64_t*)0x20014ef8 = 0;
    *(uint32_t*)0x20014f00 = 0x51;
    *(uint32_t*)0x20014f04 = 0;
    *(uint32_t*)0x20014f08 = 0;
    *(uint32_t*)0x20014f0c = 3;
    *(uint32_t*)0x20014f10 = 0x81;
    *(uint32_t*)0x20014f14 = 5;
    *(uint8_t*)0x20014f18 = 0;
    *(uint8_t*)0x20014f19 = 0;
    *(uint64_t*)0x20014f20 = 0;
    *(uint16_t*)0x20014f28 = 0x28;
    memcpy((void*)0x20014f2a, "\x52\x45\x4a\x45\x43\x54\x00\x00\x00\x00\x00\x00"
                              "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                              "\x00\x00\x00\x00\x00",
           29);
    *(uint8_t*)0x20014f47 = 0;
    *(uint32_t*)0x20014f48 = 0;
    *(uint8_t*)0x20014f50 = 0xac;
    *(uint8_t*)0x20014f51 = 0x14;
    *(uint8_t*)0x20014f52 = 0;
    *(uint8_t*)0x20014f53 = 0;
    *(uint32_t*)0x20014f54 = htobe32(0xfd2);
    *(uint32_t*)0x20014f58 = htobe32(0);
    *(uint32_t*)0x20014f5c = htobe32(0);
    *(uint8_t*)0x20014f60 = 0x73;
    *(uint8_t*)0x20014f61 = 0x79;
    *(uint8_t*)0x20014f62 = 0x7a;
    *(uint8_t*)0x20014f63 = 0;
    *(uint8_t*)0x20014f64 = 0;
    *(uint8_t*)0x20014f70 = 0x73;
    *(uint8_t*)0x20014f71 = 0x79;
    *(uint8_t*)0x20014f72 = 0x7a;
    *(uint8_t*)0x20014f73 = 0;
    *(uint8_t*)0x20014f74 = 0;
    *(uint8_t*)0x20014f80 = 0;
    *(uint8_t*)0x20014f81 = 0;
    *(uint8_t*)0x20014f82 = 0;
    *(uint8_t*)0x20014f83 = 0;
    *(uint8_t*)0x20014f84 = 0;
    *(uint8_t*)0x20014f85 = 0;
    *(uint8_t*)0x20014f86 = 0;
    *(uint8_t*)0x20014f87 = 0;
    *(uint8_t*)0x20014f88 = 0;
    *(uint8_t*)0x20014f89 = 0;
    *(uint8_t*)0x20014f8a = 0;
    *(uint8_t*)0x20014f8b = 0;
    *(uint8_t*)0x20014f8c = 0;
    *(uint8_t*)0x20014f8d = 0;
    *(uint8_t*)0x20014f8e = 0;
    *(uint8_t*)0x20014f8f = 0;
    *(uint8_t*)0x20014f90 = 0;
    *(uint8_t*)0x20014f91 = 0;
    *(uint8_t*)0x20014f92 = 0;
    *(uint8_t*)0x20014f93 = 0;
    *(uint8_t*)0x20014f94 = 0;
    *(uint8_t*)0x20014f95 = 0;
    *(uint8_t*)0x20014f96 = 0;
    *(uint8_t*)0x20014f97 = 0;
    *(uint8_t*)0x20014f98 = 0;
    *(uint8_t*)0x20014f99 = 0;
    *(uint8_t*)0x20014f9a = 0;
    *(uint8_t*)0x20014f9b = 0;
    *(uint8_t*)0x20014f9c = 0;
    *(uint8_t*)0x20014f9d = 0;
    *(uint8_t*)0x20014f9e = 0;
    *(uint8_t*)0x20014f9f = 0;
    *(uint16_t*)0x20014fa0 = 0;
    *(uint8_t*)0x20014fa2 = 0;
    *(uint8_t*)0x20014fa3 = 0;
    *(uint32_t*)0x20014fa4 = 0;
    *(uint16_t*)0x20014fa8 = 0x70;
    *(uint16_t*)0x20014faa = 0xb0;
    *(uint32_t*)0x20014fac = 0;
    *(uint64_t*)0x20014fb0 = 0;
    *(uint64_t*)0x20014fb8 = 0;
    *(uint16_t*)0x20014fc0 = 0x40;
    memcpy((void*)0x20014fc2, "\x52\x41\x54\x45\x45\x53\x54\x00\x00\x00\x00\x00"
                              "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                              "\x00\x00\x00\x00\x00",
           29);
    *(uint8_t*)0x20014fdf = 0;
    memcpy((void*)0x20014fe0,
           "\x73\x79\x7a\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
           16);
    *(uint8_t*)0x20014ff0 = 1;
    *(uint8_t*)0x20014ff1 = 0x19;
    *(uint64_t*)0x20014ff8 = 8;
    *(uint64_t*)0x20001000 = 0;
    *(uint64_t*)0x20001008 = 0;
    *(uint64_t*)0x20001010 = 0;
    *(uint64_t*)0x20001018 = 0;
    *(uint64_t*)0x20001020 = 0;
    *(uint64_t*)0x20001028 = 0;
    *(uint64_t*)0x20001030 = 0;
    *(uint64_t*)0x20001038 = 0;
    syscall(__NR_setsockopt, r[1], 0, 0x40, 0x20014bd0, 0x430);
    break;
  case 8:
    syscall(__NR_mmap, 0x20019000, 0x1000, 3, 0x32, -1, 0);
    break;
  case 9:
    syscall(__NR_mmap, 0x20019000, 0x1000, 3, 0x32, -1, 0);
    break;
  case 10:
    syscall(__NR_ioctl, r[0], 0x541d);
    break;
  case 11:
    syscall(__NR_mmap, 0x20019000, 0x1000, 3, 0x32, -1, 0);
    break;
  case 12:
    *(uint64_t*)0x20019fc0 = 0x20019000;
    *(uint64_t*)0x20019fc8 = 0x2000c000;
    *(uint64_t*)0x20019fd0 = 0x20019000;
    *(uint64_t*)0x20019fd8 = 0x20005000;
    *(uint32_t*)0x20019fe0 = 3;
    *(uint32_t*)0x20019fe4 = 6;
    *(uint32_t*)0x20019fe8 = 5;
    *(uint32_t*)0x20019fec = 3;
    *(uint32_t*)0x20019ff0 = 0;
    *(uint32_t*)0x20019ff4 = 0;
    *(uint32_t*)0x20019ff8 = 0;
    *(uint32_t*)0x20019ffc = 0;
    syscall(__NR_ioctl, r[0], 0xc04064a0, 0x20019fc0);
    break;
  case 13:
    r[2] = syscall(__NR_socket, 0x10, 3, 0xc);
    break;
  case 14:
    syscall(__NR_mmap, 0x2001a000, 0x1000, 3, 0x32, -1, 0);
    break;
  case 15:
    syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0);
    break;
  case 16:
    memcpy((void*)0x209aa000, "net/softnet_stat", 17);
    r[3] = syz_open_procfs(0, 0x209aa000);
    break;
  case 17:
    *(uint32_t*)0x2025c000 = 2;
    *(uint32_t*)0x2025c004 = 0x6d;
    *(uint8_t*)0x2025c008 = 0xe3;
    *(uint8_t*)0x2025c009 = 0;
    *(uint8_t*)0x2025c00a = 0;
    *(uint8_t*)0x2025c00b = 0;
    *(uint32_t*)0x2025c00c = 0;
    *(uint64_t*)0x2025c010 = 0;
    *(uint64_t*)0x2025c018 = 0;
    *(uint64_t*)0x2025c020 = 0;
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 0, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 1, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 2, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 3, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 4, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0xffff7fffffffffff, 5, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 6, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 7, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 8, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 9, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 10, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 11, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 12, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 13, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 14, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 15, 2);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 17, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 18, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 19, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 20, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 21, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 22, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 23, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 24, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 25, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 26, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 27, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 28, 1);
    STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 29, 35);
    *(uint32_t*)0x2025c030 = 0;
    *(uint32_t*)0x2025c034 = 0;
    *(uint64_t*)0x2025c038 = 0x20000000;
    *(uint64_t*)0x2025c040 = 0;
    *(uint64_t*)0x2025c048 = 0;
    *(uint64_t*)0x2025c050 = 0;
    *(uint64_t*)0x2025c058 = 0;
    *(uint32_t*)0x2025c060 = 0;
    *(uint64_t*)0x2025c068 = 0;
    *(uint32_t*)0x2025c070 = 0;
    *(uint16_t*)0x2025c074 = 0;
    *(uint16_t*)0x2025c076 = 0;
    syscall(__NR_perf_event_open, 0x2025c000, 0, 0, -1, 0);
    break;
  case 18:
    *(uint64_t*)0x2055ff80 = 0x202f0f89;
    *(uint64_t*)0x2055ff88 = 0xcc;
    syscall(__NR_preadv, r[3], 0x2055ff80, 1, 0);
    break;
  case 19:
    syscall(__NR_read, r[2], 0x2001a000, 0x84);
    break;
  }
}

void test()
{
  memset(r, -1, sizeof(r));
  execute(20);
  collide = 1;
  execute(20);
}

int main()
{
  char* cwd = get_current_dir_name();
  for (;;) {
    if (chdir(cwd))
      fail("failed to chdir");
    use_temporary_dir();
    setup_tun(0, true);
    loop();
  }
}