// https://syzkaller.appspot.com/bug?id=14177cd007e876c70445b10912cfab974e43657c
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <arpa/inet.h>
#include <endian.h>
#include <errno.h>
#include <errno.h>
#include <fcntl.h>
#include <linux/if.h>
#include <linux/if_ether.h>
#include <linux/if_tun.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <net/if_arp.h>
#include <sched.h>
#include <signal.h>
#include <stdarg.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/wait.h>
#include <unistd.h>

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

#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 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);
  }
}

#define MAX_FRAGS 4
struct vnet_fragmentation {
  uint32_t full;
  uint32_t count;
  uint32_t frags[MAX_FRAGS];
};

static uintptr_t syz_emit_ethernet(uintptr_t a0, uintptr_t a1, uintptr_t a2)
{
  if (tunfd < 0)
    return (uintptr_t)-1;

  uint32_t length = a0;
  char* data = (char*)a1;

  struct vnet_fragmentation* frags = (struct vnet_fragmentation*)a2;
  struct iovec vecs[MAX_FRAGS + 1];
  uint32_t nfrags = 0;
  if (!tun_frags_enabled || frags == NULL) {
    vecs[nfrags].iov_base = data;
    vecs[nfrags].iov_len = length;
    nfrags++;
  } else {
    bool full = true;
    uint32_t i, count = 0;
    full = frags->full;
    count = frags->count;
    if (count > MAX_FRAGS)
      count = MAX_FRAGS;
    for (i = 0; i < count && length != 0; i++) {
      uint32_t size = 0;
      size = frags->frags[i];
      if (size > length)
        size = length;
      vecs[nfrags].iov_base = data;
      vecs[nfrags].iov_len = size;
      nfrags++;
      data += size;
      length -= size;
    }
    if (length != 0 && (full || nfrags == 0)) {
      vecs[nfrags].iov_base = data;
      vecs[nfrags].iov_len = length;
      nfrags++;
    }
  }
  return writev(tunfd, vecs, nfrags);
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  setsid();

  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = 128 << 20;
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 8 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_FSIZE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_STACK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 0;
  setrlimit(RLIMIT_CORE, &rlim);

#define CLONE_NEWCGROUP 0x02000000

  if (unshare(CLONE_NEWNS)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(CLONE_NEWCGROUP)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
}

static int do_sandbox_none(int executor_pid, bool enable_tun)
{
  if (unshare(CLONE_NEWPID)) {
  }
  int pid = fork();
  if (pid < 0)
    fail("sandbox fork failed");
  if (pid)
    return pid;

  sandbox_common();
  if (unshare(CLONE_NEWNET)) {
  }
  setup_tun(executor_pid, enable_tun);

  loop();
  doexit(1);
}

static void test();

void loop()
{
  while (1) {
    test();
  }
}

long r[2];
uint64_t procid;
void test()
{
  memset(r, -1, sizeof(r));
  syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0);
  r[0] = syscall(__NR_socket, 0xa, 0x80005, 0);
  *(uint64_t*)0x20009fc8 = 0x20005fe4;
  *(uint32_t*)0x20009fd0 = 0x1c;
  *(uint64_t*)0x20009fd8 = 0x2000d000;
  *(uint64_t*)0x20009fe0 = 1;
  *(uint64_t*)0x20009fe8 = 0x2001f000;
  *(uint64_t*)0x20009ff0 = 0x20;
  *(uint32_t*)0x20009ff8 = 0;
  *(uint16_t*)0x20005fe4 = 0xa;
  *(uint16_t*)0x20005fe6 = 0;
  *(uint32_t*)0x20005fe8 = 0xfefffffc;
  *(uint8_t*)0x20005fec = 0xfe;
  *(uint8_t*)0x20005fed = 0x80;
  *(uint8_t*)0x20005fee = 0;
  *(uint8_t*)0x20005fef = 0;
  *(uint8_t*)0x20005ff0 = 0;
  *(uint8_t*)0x20005ff1 = 0;
  *(uint8_t*)0x20005ff2 = 0;
  *(uint8_t*)0x20005ff3 = 0;
  *(uint8_t*)0x20005ff4 = 0;
  *(uint8_t*)0x20005ff5 = 0;
  *(uint8_t*)0x20005ff6 = 0;
  *(uint8_t*)0x20005ff7 = 0;
  *(uint8_t*)0x20005ff8 = 0;
  *(uint8_t*)0x20005ff9 = 0;
  *(uint8_t*)0x20005ffa = 0 + procid * 1;
  *(uint8_t*)0x20005ffb = 0;
  *(uint32_t*)0x20005ffc = 7;
  *(uint64_t*)0x2000d000 = 0x20019000;
  *(uint64_t*)0x2000d008 = 0xb6;
  memcpy((void*)0x20019000,
         "\xe0\x4f\xd5\x53\x27\x88\xf4\xbb\xf0\x88\xfe\xa7\xf7\xd2\x7b\x88\xdf"
         "\x90\xf3\xce\x13\xe9\x5a\x0b\x35\x80\x9f\xd2\xe4\x4f\x9e\x72\xdf\xcb"
         "\x1a\xe3\x69\x56\x18\x03\x60\x84\x0a\x5d\x50\xd2\x62\x8e\xb3\x7f\x3f"
         "\x46\xd7\xd5\xf1\xe1\x06\xe5\x9b\x59\x2b\xd5\x1d\x51\x73\xef\xbd\xde"
         "\x1b\xeb\x8b\x16\x1d\x98\xa8\x97\xda\x4a\xa9\xae\x88\xf6\x59\x02\xc7"
         "\x11\xb2\x37\x4b\x67\x4a\xda\xd8\xd4\x8d\x00\x98\x2c\x1b\x72\xe0\xe7"
         "\x99\x63\xbc\x50\xe0\xa0\x2a\x3e\xee\x50\xdd\xe4\xd7\x67\xa7\x94\x8c"
         "\x9f\xeb\x88\x00\xfa\x19\x5d\xa5\x05\x39\x71\xc1\xe1\x66\x58\x65\x44"
         "\xdb\xf1\x5f\x52\x8a\xf0\x28\xd0\xfc\x1a\x0f\xc6\xdf\x70\x4b\x71\x5e"
         "\x36\xf8\x31\xd5\x85\x8f\x93\x09\xa5\x86\x72\x54\x90\x38\x65\x30\x93"
         "\xf7\x61\x20\x71\xab\x0d\xac\x49\xc5\x66\xb7\xae",
         182);
  *(uint64_t*)0x2001f000 = 0x10;
  *(uint32_t*)0x2001f008 = 0x109;
  *(uint32_t*)0x2001f00c = 0x50;
  *(uint64_t*)0x2001f010 = 0x10;
  *(uint32_t*)0x2001f018 = 0x11b;
  *(uint32_t*)0x2001f01c = 0x7ff;
  syscall(__NR_sendmsg, r[0], 0x20009fc8, 0x20004840);
  r[1] = syscall(__NR_socket, 0xa, 1, 0);
  memcpy((void*)0x20031be0, "\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*)0x20031c00 = 0xe;
  *(uint32_t*)0x20031c04 = 4;
  *(uint32_t*)0x20031c08 = 0x3c0;
  *(uint32_t*)0x20031c0c = -1;
  *(uint32_t*)0x20031c10 = 0;
  *(uint32_t*)0x20031c14 = 0xd0;
  *(uint32_t*)0x20031c18 = 0xd0;
  *(uint32_t*)0x20031c1c = -1;
  *(uint32_t*)0x20031c20 = -1;
  *(uint32_t*)0x20031c24 = 0x2f0;
  *(uint32_t*)0x20031c28 = 0x2f0;
  *(uint32_t*)0x20031c2c = 0x2f0;
  *(uint32_t*)0x20031c30 = -1;
  *(uint32_t*)0x20031c34 = 4;
  *(uint64_t*)0x20031c38 = 0x20031fc0;
  *(uint8_t*)0x20031c40 = 0;
  *(uint8_t*)0x20031c41 = 0;
  *(uint8_t*)0x20031c42 = 0;
  *(uint8_t*)0x20031c43 = 0;
  *(uint8_t*)0x20031c44 = 0;
  *(uint8_t*)0x20031c45 = 0;
  *(uint8_t*)0x20031c46 = 0;
  *(uint8_t*)0x20031c47 = 0;
  *(uint8_t*)0x20031c48 = 0;
  *(uint8_t*)0x20031c49 = 0;
  *(uint8_t*)0x20031c4a = 0;
  *(uint8_t*)0x20031c4b = 0;
  *(uint8_t*)0x20031c4c = 0;
  *(uint8_t*)0x20031c4d = 0;
  *(uint8_t*)0x20031c4e = 0;
  *(uint8_t*)0x20031c4f = 0;
  *(uint8_t*)0x20031c50 = 0;
  *(uint8_t*)0x20031c51 = 0;
  *(uint8_t*)0x20031c52 = 0;
  *(uint8_t*)0x20031c53 = 0;
  *(uint8_t*)0x20031c54 = 0;
  *(uint8_t*)0x20031c55 = 0;
  *(uint8_t*)0x20031c56 = 0;
  *(uint8_t*)0x20031c57 = 0;
  *(uint8_t*)0x20031c58 = 0;
  *(uint8_t*)0x20031c59 = 0;
  *(uint8_t*)0x20031c5a = 0;
  *(uint8_t*)0x20031c5b = 0;
  *(uint8_t*)0x20031c5c = 0;
  *(uint8_t*)0x20031c5d = 0;
  *(uint8_t*)0x20031c5e = 0;
  *(uint8_t*)0x20031c5f = 0;
  *(uint8_t*)0x20031c60 = 0;
  *(uint8_t*)0x20031c61 = 0;
  *(uint8_t*)0x20031c62 = 0;
  *(uint8_t*)0x20031c63 = 0;
  *(uint8_t*)0x20031c64 = 0;
  *(uint8_t*)0x20031c65 = 0;
  *(uint8_t*)0x20031c66 = 0;
  *(uint8_t*)0x20031c67 = 0;
  *(uint8_t*)0x20031c68 = 0;
  *(uint8_t*)0x20031c69 = 0;
  *(uint8_t*)0x20031c6a = 0;
  *(uint8_t*)0x20031c6b = 0;
  *(uint8_t*)0x20031c6c = 0;
  *(uint8_t*)0x20031c6d = 0;
  *(uint8_t*)0x20031c6e = 0;
  *(uint8_t*)0x20031c6f = 0;
  *(uint8_t*)0x20031c70 = 0;
  *(uint8_t*)0x20031c71 = 0;
  *(uint8_t*)0x20031c72 = 0;
  *(uint8_t*)0x20031c73 = 0;
  *(uint8_t*)0x20031c74 = 0;
  *(uint8_t*)0x20031c75 = 0;
  *(uint8_t*)0x20031c76 = 0;
  *(uint8_t*)0x20031c77 = 0;
  *(uint8_t*)0x20031c78 = 0;
  *(uint8_t*)0x20031c79 = 0;
  *(uint8_t*)0x20031c7a = 0;
  *(uint8_t*)0x20031c7b = 0;
  *(uint8_t*)0x20031c7c = 0;
  *(uint8_t*)0x20031c7d = 0;
  *(uint8_t*)0x20031c7e = 0;
  *(uint8_t*)0x20031c7f = 0;
  *(uint8_t*)0x20031c80 = 0;
  *(uint8_t*)0x20031c81 = 0;
  *(uint8_t*)0x20031c82 = 0;
  *(uint8_t*)0x20031c83 = 0;
  *(uint8_t*)0x20031c84 = 0;
  *(uint8_t*)0x20031c85 = 0;
  *(uint8_t*)0x20031c86 = 0;
  *(uint8_t*)0x20031c87 = 0;
  *(uint8_t*)0x20031c88 = 0;
  *(uint8_t*)0x20031c89 = 0;
  *(uint8_t*)0x20031c8a = 0;
  *(uint8_t*)0x20031c8b = 0;
  *(uint8_t*)0x20031c8c = 0;
  *(uint8_t*)0x20031c8d = 0;
  *(uint8_t*)0x20031c8e = 0;
  *(uint8_t*)0x20031c8f = 0;
  *(uint8_t*)0x20031c90 = 0;
  *(uint8_t*)0x20031c91 = 0;
  *(uint8_t*)0x20031c92 = 0;
  *(uint8_t*)0x20031c93 = 0;
  *(uint8_t*)0x20031c94 = 0;
  *(uint8_t*)0x20031c95 = 0;
  *(uint8_t*)0x20031c96 = 0;
  *(uint8_t*)0x20031c97 = 0;
  *(uint8_t*)0x20031c98 = 0;
  *(uint8_t*)0x20031c99 = 0;
  *(uint8_t*)0x20031c9a = 0;
  *(uint8_t*)0x20031c9b = 0;
  *(uint8_t*)0x20031c9c = 0;
  *(uint8_t*)0x20031c9d = 0;
  *(uint8_t*)0x20031c9e = 0;
  *(uint8_t*)0x20031c9f = 0;
  *(uint8_t*)0x20031ca0 = 0;
  *(uint8_t*)0x20031ca1 = 0;
  *(uint8_t*)0x20031ca2 = 0;
  *(uint8_t*)0x20031ca3 = 0;
  *(uint8_t*)0x20031ca4 = 0;
  *(uint8_t*)0x20031ca5 = 0;
  *(uint8_t*)0x20031ca6 = 0;
  *(uint8_t*)0x20031ca7 = 0;
  *(uint8_t*)0x20031ca8 = 0;
  *(uint8_t*)0x20031ca9 = 0;
  *(uint8_t*)0x20031caa = 0;
  *(uint8_t*)0x20031cab = 0;
  *(uint8_t*)0x20031cac = 0;
  *(uint8_t*)0x20031cad = 0;
  *(uint8_t*)0x20031cae = 0;
  *(uint8_t*)0x20031caf = 0;
  *(uint8_t*)0x20031cb0 = 0;
  *(uint8_t*)0x20031cb1 = 0;
  *(uint8_t*)0x20031cb2 = 0;
  *(uint8_t*)0x20031cb3 = 0;
  *(uint8_t*)0x20031cb4 = 0;
  *(uint8_t*)0x20031cb5 = 0;
  *(uint8_t*)0x20031cb6 = 0;
  *(uint8_t*)0x20031cb7 = 0;
  *(uint8_t*)0x20031cb8 = 0;
  *(uint8_t*)0x20031cb9 = 0;
  *(uint8_t*)0x20031cba = 0;
  *(uint8_t*)0x20031cbb = 0;
  *(uint8_t*)0x20031cbc = 0;
  *(uint8_t*)0x20031cbd = 0;
  *(uint8_t*)0x20031cbe = 0;
  *(uint8_t*)0x20031cbf = 0;
  *(uint8_t*)0x20031cc0 = 0;
  *(uint8_t*)0x20031cc1 = 0;
  *(uint8_t*)0x20031cc2 = 0;
  *(uint8_t*)0x20031cc3 = 0;
  *(uint8_t*)0x20031cc4 = 0;
  *(uint8_t*)0x20031cc5 = 0;
  *(uint8_t*)0x20031cc6 = 0;
  *(uint8_t*)0x20031cc7 = 0;
  *(uint32_t*)0x20031cc8 = 0;
  *(uint16_t*)0x20031ccc = 0xa8;
  *(uint16_t*)0x20031cce = 0xd0;
  *(uint32_t*)0x20031cd0 = 0;
  *(uint64_t*)0x20031cd8 = 0;
  *(uint64_t*)0x20031ce0 = 0;
  *(uint16_t*)0x20031ce8 = 0x28;
  memcpy((void*)0x20031cea, "\x00\x00\x00\x00\x00\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*)0x20031d07 = 0;
  *(uint32_t*)0x20031d08 = 0x220;
  *(uint8_t*)0x20031d10 = 0xfe;
  *(uint8_t*)0x20031d11 = 0x80;
  *(uint8_t*)0x20031d12 = 0;
  *(uint8_t*)0x20031d13 = 0;
  *(uint8_t*)0x20031d14 = 0;
  *(uint8_t*)0x20031d15 = 0;
  *(uint8_t*)0x20031d16 = 0;
  *(uint8_t*)0x20031d17 = 0;
  *(uint8_t*)0x20031d18 = 0;
  *(uint8_t*)0x20031d19 = 0;
  *(uint8_t*)0x20031d1a = 0;
  *(uint8_t*)0x20031d1b = 0;
  *(uint8_t*)0x20031d1c = 0;
  *(uint8_t*)0x20031d1d = 0;
  *(uint8_t*)0x20031d1e = 0 + procid * 1;
  *(uint8_t*)0x20031d1f = 0xaa;
  *(uint8_t*)0x20031d20 = 0;
  *(uint8_t*)0x20031d21 = 0;
  *(uint8_t*)0x20031d22 = 0;
  *(uint8_t*)0x20031d23 = 0;
  *(uint8_t*)0x20031d24 = 0;
  *(uint8_t*)0x20031d25 = 0;
  *(uint8_t*)0x20031d26 = 0;
  *(uint8_t*)0x20031d27 = 0;
  *(uint8_t*)0x20031d28 = 0;
  *(uint8_t*)0x20031d29 = 0;
  *(uint8_t*)0x20031d2a = -1;
  *(uint8_t*)0x20031d2b = -1;
  *(uint8_t*)0x20031d2c = 0xac;
  *(uint8_t*)0x20031d2d = 0x14;
  *(uint8_t*)0x20031d2e = 0 + procid * 1;
  *(uint8_t*)0x20031d2f = 0xbb;
  *(uint32_t*)0x20031d30 = htobe32(0xff000000);
  *(uint32_t*)0x20031d34 = htobe32(-1);
  *(uint32_t*)0x20031d38 = htobe32(-1);
  *(uint32_t*)0x20031d3c = htobe32(-1);
  *(uint32_t*)0x20031d40 = htobe32(-1);
  *(uint32_t*)0x20031d44 = htobe32(-1);
  *(uint32_t*)0x20031d48 = htobe32(0);
  *(uint32_t*)0x20031d4c = htobe32(0xff000000);
  memcpy((void*)0x20031d50,
         "\x57\xe2\xd2\x8c\x48\xb4\x41\xd5\xdd\x7f\xd7\xfe\x2b\x8a\x5d\x8c",
         16);
  memcpy((void*)0x20031d60,
         "\x9c\xec\x5a\x1e\x2a\xf3\x54\xbd\x33\x4d\xc9\xd2\x8f\xff\x43\x1f",
         16);
  *(uint8_t*)0x20031d70 = -1;
  *(uint8_t*)0x20031d71 = 0;
  *(uint8_t*)0x20031d72 = 0;
  *(uint8_t*)0x20031d73 = 0;
  *(uint8_t*)0x20031d74 = 0;
  *(uint8_t*)0x20031d75 = 0;
  *(uint8_t*)0x20031d76 = 0;
  *(uint8_t*)0x20031d77 = 0;
  *(uint8_t*)0x20031d78 = 0;
  *(uint8_t*)0x20031d79 = 0;
  *(uint8_t*)0x20031d7a = 0;
  *(uint8_t*)0x20031d7b = 0;
  *(uint8_t*)0x20031d7c = 0;
  *(uint8_t*)0x20031d7d = 0;
  *(uint8_t*)0x20031d7e = 0;
  *(uint8_t*)0x20031d7f = 0;
  *(uint8_t*)0x20031d80 = -1;
  *(uint8_t*)0x20031d81 = 0;
  *(uint8_t*)0x20031d82 = 0;
  *(uint8_t*)0x20031d83 = 0;
  *(uint8_t*)0x20031d84 = 0;
  *(uint8_t*)0x20031d85 = 0;
  *(uint8_t*)0x20031d86 = 0;
  *(uint8_t*)0x20031d87 = 0;
  *(uint8_t*)0x20031d88 = 0;
  *(uint8_t*)0x20031d89 = 0;
  *(uint8_t*)0x20031d8a = 0;
  *(uint8_t*)0x20031d8b = 0;
  *(uint8_t*)0x20031d8c = 0;
  *(uint8_t*)0x20031d8d = 0;
  *(uint8_t*)0x20031d8e = 0;
  *(uint8_t*)0x20031d8f = 0;
  *(uint16_t*)0x20031d90 = 0x5d;
  *(uint8_t*)0x20031d92 = -1;
  *(uint8_t*)0x20031d93 = 1;
  *(uint8_t*)0x20031d94 = 8;
  *(uint32_t*)0x20031d98 = 0;
  *(uint16_t*)0x20031d9c = 0x108;
  *(uint16_t*)0x20031d9e = 0x150;
  *(uint32_t*)0x20031da0 = 0;
  *(uint64_t*)0x20031da8 = 0;
  *(uint64_t*)0x20031db0 = 0;
  *(uint16_t*)0x20031db8 = 0x30;
  memcpy((void*)0x20031dba, "\x66\x72\x61\x67\x00\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*)0x20031dd7 = 0;
  *(uint32_t*)0x20031dd8 = 0x629c;
  *(uint32_t*)0x20031ddc = 0x64;
  *(uint32_t*)0x20031de0 = 0x10000;
  *(uint8_t*)0x20031de4 = 2;
  *(uint8_t*)0x20031de5 = 2;
  *(uint16_t*)0x20031de8 = 0x30;
  memcpy((void*)0x20031dea, "\x61\x68\x00\x00\x00\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*)0x20031e07 = 0;
  *(uint32_t*)0x20031e08 = htobe32(0x4d4 + procid * 4);
  *(uint32_t*)0x20031e0c = htobe32(0x4d4 + procid * 4);
  *(uint32_t*)0x20031e10 = 5;
  *(uint8_t*)0x20031e14 = 0;
  *(uint8_t*)0x20031e15 = 3;
  *(uint16_t*)0x20031e18 = 0x48;
  memcpy((void*)0x20031e1a, "\x4c\x45\x44\x00\x00\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*)0x20031e37 = 0;
  memcpy((void*)0x20031e38, "\x73\x79\x7a\x31\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00",
         27);
  *(uint8_t*)0x20031e53 = 1;
  *(uint32_t*)0x20031e54 = 2;
  *(uint64_t*)0x20031e58 = 0x20;
  *(uint8_t*)0x20031e60 = 0xfe;
  *(uint8_t*)0x20031e61 = 0x80;
  *(uint8_t*)0x20031e62 = 0;
  *(uint8_t*)0x20031e63 = 0;
  *(uint8_t*)0x20031e64 = 0;
  *(uint8_t*)0x20031e65 = 0;
  *(uint8_t*)0x20031e66 = 0;
  *(uint8_t*)0x20031e67 = 0;
  *(uint8_t*)0x20031e68 = 0;
  *(uint8_t*)0x20031e69 = 0;
  *(uint8_t*)0x20031e6a = 0;
  *(uint8_t*)0x20031e6b = 0;
  *(uint8_t*)0x20031e6c = 0;
  *(uint8_t*)0x20031e6d = 0;
  *(uint8_t*)0x20031e6e = 0 + procid * 1;
  *(uint8_t*)0x20031e6f = 0xbb;
  *(uint8_t*)0x20031e70 = 0;
  *(uint8_t*)0x20031e71 = 0;
  *(uint8_t*)0x20031e72 = 0;
  *(uint8_t*)0x20031e73 = 0;
  *(uint8_t*)0x20031e74 = 0;
  *(uint8_t*)0x20031e75 = 0;
  *(uint8_t*)0x20031e76 = 0;
  *(uint8_t*)0x20031e77 = 0;
  *(uint8_t*)0x20031e78 = 0;
  *(uint8_t*)0x20031e79 = 0;
  *(uint8_t*)0x20031e7a = 0;
  *(uint8_t*)0x20031e7b = 0;
  *(uint8_t*)0x20031e7c = 0;
  *(uint8_t*)0x20031e7d = 0;
  *(uint8_t*)0x20031e7e = 0;
  *(uint8_t*)0x20031e7f = 0;
  *(uint32_t*)0x20031e80 = htobe32(0);
  *(uint32_t*)0x20031e84 = htobe32(0x90863f75);
  *(uint32_t*)0x20031e88 = htobe32(0xff000000);
  *(uint32_t*)0x20031e8c = htobe32(0);
  *(uint32_t*)0x20031e90 = htobe32(-1);
  *(uint32_t*)0x20031e94 = htobe32(0);
  *(uint32_t*)0x20031e98 = htobe32(0xff);
  *(uint32_t*)0x20031e9c = htobe32(-1);
  *(uint8_t*)0x20031ea0 = 0x73;
  *(uint8_t*)0x20031ea1 = 0x79;
  *(uint8_t*)0x20031ea2 = 0x7a;
  *(uint8_t*)0x20031ea3 = 0x30 + procid * 1;
  *(uint8_t*)0x20031ea4 = 0;
  *(uint8_t*)0x20031eb0 = 0x73;
  *(uint8_t*)0x20031eb1 = 0x79;
  *(uint8_t*)0x20031eb2 = 0x7a;
  *(uint8_t*)0x20031eb3 = 0x30 + procid * 1;
  *(uint8_t*)0x20031eb4 = 0;
  *(uint8_t*)0x20031ec0 = -1;
  *(uint8_t*)0x20031ec1 = 0;
  *(uint8_t*)0x20031ec2 = 0;
  *(uint8_t*)0x20031ec3 = 0;
  *(uint8_t*)0x20031ec4 = 0;
  *(uint8_t*)0x20031ec5 = 0;
  *(uint8_t*)0x20031ec6 = 0;
  *(uint8_t*)0x20031ec7 = 0;
  *(uint8_t*)0x20031ec8 = 0;
  *(uint8_t*)0x20031ec9 = 0;
  *(uint8_t*)0x20031eca = 0;
  *(uint8_t*)0x20031ecb = 0;
  *(uint8_t*)0x20031ecc = 0;
  *(uint8_t*)0x20031ecd = 0;
  *(uint8_t*)0x20031ece = 0;
  *(uint8_t*)0x20031ecf = 0;
  *(uint8_t*)0x20031ed0 = -1;
  *(uint8_t*)0x20031ed1 = 0;
  *(uint8_t*)0x20031ed2 = 0;
  *(uint8_t*)0x20031ed3 = 0;
  *(uint8_t*)0x20031ed4 = 0;
  *(uint8_t*)0x20031ed5 = 0;
  *(uint8_t*)0x20031ed6 = 0;
  *(uint8_t*)0x20031ed7 = 0;
  *(uint8_t*)0x20031ed8 = 0;
  *(uint8_t*)0x20031ed9 = 0;
  *(uint8_t*)0x20031eda = 0;
  *(uint8_t*)0x20031edb = 0;
  *(uint8_t*)0x20031edc = 0;
  *(uint8_t*)0x20031edd = 0;
  *(uint8_t*)0x20031ede = 0;
  *(uint8_t*)0x20031edf = 0;
  *(uint16_t*)0x20031ee0 = 0x5e;
  *(uint8_t*)0x20031ee2 = 0x10;
  *(uint8_t*)0x20031ee3 = 1;
  *(uint8_t*)0x20031ee4 = 0x10;
  *(uint32_t*)0x20031ee8 = 0;
  *(uint16_t*)0x20031eec = 0xa8;
  *(uint16_t*)0x20031eee = 0xd0;
  *(uint32_t*)0x20031ef0 = 0;
  *(uint64_t*)0x20031ef8 = 0;
  *(uint64_t*)0x20031f00 = 0;
  *(uint16_t*)0x20031f08 = 0x28;
  memcpy((void*)0x20031f0a, "\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*)0x20031f27 = 0;
  *(uint32_t*)0x20031f28 = 0;
  *(uint8_t*)0x20031f30 = 0;
  *(uint8_t*)0x20031f31 = 0;
  *(uint8_t*)0x20031f32 = 0;
  *(uint8_t*)0x20031f33 = 0;
  *(uint8_t*)0x20031f34 = 0;
  *(uint8_t*)0x20031f35 = 0;
  *(uint8_t*)0x20031f36 = 0;
  *(uint8_t*)0x20031f37 = 0;
  *(uint8_t*)0x20031f38 = 0;
  *(uint8_t*)0x20031f39 = 0;
  *(uint8_t*)0x20031f3a = 0;
  *(uint8_t*)0x20031f3b = 0;
  *(uint8_t*)0x20031f3c = 0;
  *(uint8_t*)0x20031f3d = 0;
  *(uint8_t*)0x20031f3e = 0;
  *(uint8_t*)0x20031f3f = 0;
  *(uint8_t*)0x20031f40 = 0;
  *(uint8_t*)0x20031f41 = 0;
  *(uint8_t*)0x20031f42 = 0;
  *(uint8_t*)0x20031f43 = 0;
  *(uint8_t*)0x20031f44 = 0;
  *(uint8_t*)0x20031f45 = 0;
  *(uint8_t*)0x20031f46 = 0;
  *(uint8_t*)0x20031f47 = 0;
  *(uint8_t*)0x20031f48 = 0;
  *(uint8_t*)0x20031f49 = 0;
  *(uint8_t*)0x20031f4a = 0;
  *(uint8_t*)0x20031f4b = 0;
  *(uint8_t*)0x20031f4c = 0;
  *(uint8_t*)0x20031f4d = 0;
  *(uint8_t*)0x20031f4e = 0;
  *(uint8_t*)0x20031f4f = 0;
  *(uint8_t*)0x20031f50 = 0;
  *(uint8_t*)0x20031f51 = 0;
  *(uint8_t*)0x20031f52 = 0;
  *(uint8_t*)0x20031f53 = 0;
  *(uint8_t*)0x20031f54 = 0;
  *(uint8_t*)0x20031f55 = 0;
  *(uint8_t*)0x20031f56 = 0;
  *(uint8_t*)0x20031f57 = 0;
  *(uint8_t*)0x20031f58 = 0;
  *(uint8_t*)0x20031f59 = 0;
  *(uint8_t*)0x20031f5a = 0;
  *(uint8_t*)0x20031f5b = 0;
  *(uint8_t*)0x20031f5c = 0;
  *(uint8_t*)0x20031f5d = 0;
  *(uint8_t*)0x20031f5e = 0;
  *(uint8_t*)0x20031f5f = 0;
  *(uint8_t*)0x20031f60 = 0;
  *(uint8_t*)0x20031f61 = 0;
  *(uint8_t*)0x20031f62 = 0;
  *(uint8_t*)0x20031f63 = 0;
  *(uint8_t*)0x20031f64 = 0;
  *(uint8_t*)0x20031f65 = 0;
  *(uint8_t*)0x20031f66 = 0;
  *(uint8_t*)0x20031f67 = 0;
  *(uint8_t*)0x20031f68 = 0;
  *(uint8_t*)0x20031f69 = 0;
  *(uint8_t*)0x20031f6a = 0;
  *(uint8_t*)0x20031f6b = 0;
  *(uint8_t*)0x20031f6c = 0;
  *(uint8_t*)0x20031f6d = 0;
  *(uint8_t*)0x20031f6e = 0;
  *(uint8_t*)0x20031f6f = 0;
  *(uint8_t*)0x20031f70 = 0;
  *(uint8_t*)0x20031f71 = 0;
  *(uint8_t*)0x20031f72 = 0;
  *(uint8_t*)0x20031f73 = 0;
  *(uint8_t*)0x20031f74 = 0;
  *(uint8_t*)0x20031f75 = 0;
  *(uint8_t*)0x20031f76 = 0;
  *(uint8_t*)0x20031f77 = 0;
  *(uint8_t*)0x20031f78 = 0;
  *(uint8_t*)0x20031f79 = 0;
  *(uint8_t*)0x20031f7a = 0;
  *(uint8_t*)0x20031f7b = 0;
  *(uint8_t*)0x20031f7c = 0;
  *(uint8_t*)0x20031f7d = 0;
  *(uint8_t*)0x20031f7e = 0;
  *(uint8_t*)0x20031f7f = 0;
  *(uint8_t*)0x20031f80 = 0;
  *(uint8_t*)0x20031f81 = 0;
  *(uint8_t*)0x20031f82 = 0;
  *(uint8_t*)0x20031f83 = 0;
  *(uint8_t*)0x20031f84 = 0;
  *(uint8_t*)0x20031f85 = 0;
  *(uint8_t*)0x20031f86 = 0;
  *(uint8_t*)0x20031f87 = 0;
  *(uint8_t*)0x20031f88 = 0;
  *(uint8_t*)0x20031f89 = 0;
  *(uint8_t*)0x20031f8a = 0;
  *(uint8_t*)0x20031f8b = 0;
  *(uint8_t*)0x20031f8c = 0;
  *(uint8_t*)0x20031f8d = 0;
  *(uint8_t*)0x20031f8e = 0;
  *(uint8_t*)0x20031f8f = 0;
  *(uint8_t*)0x20031f90 = 0;
  *(uint8_t*)0x20031f91 = 0;
  *(uint8_t*)0x20031f92 = 0;
  *(uint8_t*)0x20031f93 = 0;
  *(uint8_t*)0x20031f94 = 0;
  *(uint8_t*)0x20031f95 = 0;
  *(uint8_t*)0x20031f96 = 0;
  *(uint8_t*)0x20031f97 = 0;
  *(uint8_t*)0x20031f98 = 0;
  *(uint8_t*)0x20031f99 = 0;
  *(uint8_t*)0x20031f9a = 0;
  *(uint8_t*)0x20031f9b = 0;
  *(uint8_t*)0x20031f9c = 0;
  *(uint8_t*)0x20031f9d = 0;
  *(uint8_t*)0x20031f9e = 0;
  *(uint8_t*)0x20031f9f = 0;
  *(uint8_t*)0x20031fa0 = 0;
  *(uint8_t*)0x20031fa1 = 0;
  *(uint8_t*)0x20031fa2 = 0;
  *(uint8_t*)0x20031fa3 = 0;
  *(uint8_t*)0x20031fa4 = 0;
  *(uint8_t*)0x20031fa5 = 0;
  *(uint8_t*)0x20031fa6 = 0;
  *(uint8_t*)0x20031fa7 = 0;
  *(uint8_t*)0x20031fa8 = 0;
  *(uint8_t*)0x20031fa9 = 0;
  *(uint8_t*)0x20031faa = 0;
  *(uint8_t*)0x20031fab = 0;
  *(uint8_t*)0x20031fac = 0;
  *(uint8_t*)0x20031fad = 0;
  *(uint8_t*)0x20031fae = 0;
  *(uint8_t*)0x20031faf = 0;
  *(uint8_t*)0x20031fb0 = 0;
  *(uint8_t*)0x20031fb1 = 0;
  *(uint8_t*)0x20031fb2 = 0;
  *(uint8_t*)0x20031fb3 = 0;
  *(uint8_t*)0x20031fb4 = 0;
  *(uint8_t*)0x20031fb5 = 0;
  *(uint8_t*)0x20031fb6 = 0;
  *(uint8_t*)0x20031fb7 = 0;
  *(uint32_t*)0x20031fb8 = 0;
  *(uint16_t*)0x20031fbc = 0xa8;
  *(uint16_t*)0x20031fbe = 0xd0;
  *(uint32_t*)0x20031fc0 = 0;
  *(uint64_t*)0x20031fc8 = 0;
  *(uint64_t*)0x20031fd0 = 0;
  *(uint16_t*)0x20031fd8 = 0x28;
  memcpy((void*)0x20031fda, "\x00\x00\x00\x00\x00\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*)0x20031ff7 = 0;
  *(uint32_t*)0x20031ff8 = 0xfffffffe;
  syscall(__NR_setsockopt, r[1], 0x29, 0x40, 0x20031be0, 0x420);
  *(uint8_t*)0x20000000 = -1;
  *(uint8_t*)0x20000001 = -1;
  *(uint8_t*)0x20000002 = -1;
  *(uint8_t*)0x20000003 = -1;
  *(uint8_t*)0x20000004 = -1;
  *(uint8_t*)0x20000005 = -1;
  *(uint8_t*)0x20000006 = 0;
  *(uint8_t*)0x20000007 = 0;
  *(uint8_t*)0x20000008 = 0;
  *(uint8_t*)0x20000009 = 0;
  *(uint8_t*)0x2000000a = 0;
  *(uint8_t*)0x2000000b = 0;
  *(uint16_t*)0x2000000c = htobe16(0x9100);
  STORE_BY_BITMASK(uint16_t, 0x2000000e, 0x61, 0, 3);
  STORE_BY_BITMASK(uint16_t, 0x2000000e, 9, 3, 1);
  STORE_BY_BITMASK(uint16_t, 0x2000000e, 1, 4, 12);
  *(uint16_t*)0x20000010 = htobe16(0x8100);
  STORE_BY_BITMASK(uint16_t, 0x20000012, 8, 0, 3);
  STORE_BY_BITMASK(uint16_t, 0x20000012, 4, 3, 1);
  STORE_BY_BITMASK(uint16_t, 0x20000012, 1, 4, 12);
  *(uint16_t*)0x20000014 = htobe16(0x88fb);
  syz_emit_ethernet(0x16, 0x20000000, 0x20000000);
}

int main()
{
  for (procid = 0; procid < 8; procid++) {
    if (fork() == 0) {
      for (;;) {
        int pid = do_sandbox_none(procid, true);
        int status = 0;
        while (waitpid(pid, &status, __WALL) != pid) {
        }
      }
    }
  }
  sleep(1000000);
  return 0;
}