// https://syzkaller.appspot.com/bug?id=912f70e859dfffd2533b7cfcd2c71e0dd6f71e9d
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <arpa/inet.h>
#include <endian.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 <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/uio.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);
}

long r[2];
void loop()
{
  memset(r, -1, sizeof(r));
  syscall(__NR_mmap, 0x20000000, 0xaa3000, 3, 0x32, -1, 0);
  r[0] = syscall(__NR_socket, 2, 1, 0);
  *(uint32_t*)0x20035b28 = 0x2054;
  *(uint16_t*)0x20035b30 = 2;
  *(uint16_t*)0x20035b32 = htobe16(0x4e23);
  *(uint32_t*)0x20035b34 = htobe32(-1);
  *(uint8_t*)0x20035b38 = 0;
  *(uint8_t*)0x20035b39 = 0;
  *(uint8_t*)0x20035b3a = 0;
  *(uint8_t*)0x20035b3b = 0;
  *(uint8_t*)0x20035b3c = 0;
  *(uint8_t*)0x20035b3d = 0;
  *(uint8_t*)0x20035b3e = 0;
  *(uint8_t*)0x20035b3f = 0;
  *(uint64_t*)0x20035b40 = 0;
  *(uint64_t*)0x20035b48 = 0;
  *(uint64_t*)0x20035b50 = 0;
  *(uint64_t*)0x20035b58 = 0;
  *(uint64_t*)0x20035b60 = 0;
  *(uint64_t*)0x20035b68 = 0;
  *(uint64_t*)0x20035b70 = 0;
  *(uint64_t*)0x20035b78 = 0;
  *(uint64_t*)0x20035b80 = 0;
  *(uint64_t*)0x20035b88 = 0;
  *(uint64_t*)0x20035b90 = 0;
  *(uint64_t*)0x20035b98 = 0;
  *(uint64_t*)0x20035ba0 = 0;
  *(uint64_t*)0x20035ba8 = 0;
  *(uint64_t*)0x20035bb0 = 0;
  *(uint32_t*)0x20035bb8 = 1;
  *(uint32_t*)0x20035bbc = 8;
  *(uint16_t*)0x20035bc0 = 2;
  *(uint16_t*)0x20035bc2 = htobe16(0x4e23);
  *(uint32_t*)0x20035bc4 = htobe32(0x7f);
  *(uint8_t*)0x20035bc8 = 0;
  *(uint8_t*)0x20035bc9 = 0;
  *(uint8_t*)0x20035bca = 0;
  *(uint8_t*)0x20035bcb = 0;
  *(uint8_t*)0x20035bcc = 0;
  *(uint8_t*)0x20035bcd = 0;
  *(uint8_t*)0x20035bce = 0;
  *(uint8_t*)0x20035bcf = 0;
  *(uint64_t*)0x20035bd0 = 0;
  *(uint64_t*)0x20035bd8 = 0;
  *(uint64_t*)0x20035be0 = 0;
  *(uint64_t*)0x20035be8 = 0;
  *(uint64_t*)0x20035bf0 = 0;
  *(uint64_t*)0x20035bf8 = 0;
  *(uint64_t*)0x20035c00 = 0;
  *(uint64_t*)0x20035c08 = 0;
  *(uint64_t*)0x20035c10 = 0;
  *(uint64_t*)0x20035c18 = 0;
  *(uint64_t*)0x20035c20 = 0;
  *(uint64_t*)0x20035c28 = 0;
  *(uint64_t*)0x20035c30 = 0;
  *(uint64_t*)0x20035c38 = 0;
  *(uint64_t*)0x20035c40 = 0;
  *(uint16_t*)0x20035c48 = 2;
  *(uint16_t*)0x20035c4a = htobe16(0x4e20);
  *(uint32_t*)0x20035c4c = htobe32(0x80);
  *(uint8_t*)0x20035c50 = 0;
  *(uint8_t*)0x20035c51 = 0;
  *(uint8_t*)0x20035c52 = 0;
  *(uint8_t*)0x20035c53 = 0;
  *(uint8_t*)0x20035c54 = 0;
  *(uint8_t*)0x20035c55 = 0;
  *(uint8_t*)0x20035c56 = 0;
  *(uint8_t*)0x20035c57 = 0;
  *(uint64_t*)0x20035c58 = 0;
  *(uint64_t*)0x20035c60 = 0;
  *(uint64_t*)0x20035c68 = 0;
  *(uint64_t*)0x20035c70 = 0;
  *(uint64_t*)0x20035c78 = 0;
  *(uint64_t*)0x20035c80 = 0;
  *(uint64_t*)0x20035c88 = 0;
  *(uint64_t*)0x20035c90 = 0;
  *(uint64_t*)0x20035c98 = 0;
  *(uint64_t*)0x20035ca0 = 0;
  *(uint64_t*)0x20035ca8 = 0;
  *(uint64_t*)0x20035cb0 = 0;
  *(uint64_t*)0x20035cb8 = 0;
  *(uint64_t*)0x20035cc0 = 0;
  *(uint64_t*)0x20035cc8 = 0;
  *(uint16_t*)0x20035cd0 = 2;
  *(uint16_t*)0x20035cd2 = htobe16(0x4e21);
  *(uint32_t*)0x20035cd4 = htobe32(0);
  *(uint8_t*)0x20035cd8 = 0;
  *(uint8_t*)0x20035cd9 = 0;
  *(uint8_t*)0x20035cda = 0;
  *(uint8_t*)0x20035cdb = 0;
  *(uint8_t*)0x20035cdc = 0;
  *(uint8_t*)0x20035cdd = 0;
  *(uint8_t*)0x20035cde = 0;
  *(uint8_t*)0x20035cdf = 0;
  *(uint64_t*)0x20035ce0 = 0;
  *(uint64_t*)0x20035ce8 = 0;
  *(uint64_t*)0x20035cf0 = 0;
  *(uint64_t*)0x20035cf8 = 0;
  *(uint64_t*)0x20035d00 = 0;
  *(uint64_t*)0x20035d08 = 0;
  *(uint64_t*)0x20035d10 = 0;
  *(uint64_t*)0x20035d18 = 0;
  *(uint64_t*)0x20035d20 = 0;
  *(uint64_t*)0x20035d28 = 0;
  *(uint64_t*)0x20035d30 = 0;
  *(uint64_t*)0x20035d38 = 0;
  *(uint64_t*)0x20035d40 = 0;
  *(uint64_t*)0x20035d48 = 0;
  *(uint64_t*)0x20035d50 = 0;
  *(uint16_t*)0x20035d58 = 2;
  *(uint16_t*)0x20035d5a = htobe16(0x4e20);
  *(uint32_t*)0x20035d5c = htobe32(0x7f000001);
  *(uint8_t*)0x20035d60 = 0;
  *(uint8_t*)0x20035d61 = 0;
  *(uint8_t*)0x20035d62 = 0;
  *(uint8_t*)0x20035d63 = 0;
  *(uint8_t*)0x20035d64 = 0;
  *(uint8_t*)0x20035d65 = 0;
  *(uint8_t*)0x20035d66 = 0;
  *(uint8_t*)0x20035d67 = 0;
  *(uint64_t*)0x20035d68 = 0;
  *(uint64_t*)0x20035d70 = 0;
  *(uint64_t*)0x20035d78 = 0;
  *(uint64_t*)0x20035d80 = 0;
  *(uint64_t*)0x20035d88 = 0;
  *(uint64_t*)0x20035d90 = 0;
  *(uint64_t*)0x20035d98 = 0;
  *(uint64_t*)0x20035da0 = 0;
  *(uint64_t*)0x20035da8 = 0;
  *(uint64_t*)0x20035db0 = 0;
  *(uint64_t*)0x20035db8 = 0;
  *(uint64_t*)0x20035dc0 = 0;
  *(uint64_t*)0x20035dc8 = 0;
  *(uint64_t*)0x20035dd0 = 0;
  *(uint64_t*)0x20035dd8 = 0;
  *(uint16_t*)0x20035de0 = 2;
  *(uint16_t*)0x20035de2 = htobe16(0x4e20);
  *(uint8_t*)0x20035de4 = 0xac;
  *(uint8_t*)0x20035de5 = 0x14;
  *(uint8_t*)0x20035de6 = 0;
  *(uint8_t*)0x20035de7 = 0xd;
  *(uint8_t*)0x20035de8 = 0;
  *(uint8_t*)0x20035de9 = 0;
  *(uint8_t*)0x20035dea = 0;
  *(uint8_t*)0x20035deb = 0;
  *(uint8_t*)0x20035dec = 0;
  *(uint8_t*)0x20035ded = 0;
  *(uint8_t*)0x20035dee = 0;
  *(uint8_t*)0x20035def = 0;
  *(uint64_t*)0x20035df0 = 0;
  *(uint64_t*)0x20035df8 = 0;
  *(uint64_t*)0x20035e00 = 0;
  *(uint64_t*)0x20035e08 = 0;
  *(uint64_t*)0x20035e10 = 0;
  *(uint64_t*)0x20035e18 = 0;
  *(uint64_t*)0x20035e20 = 0;
  *(uint64_t*)0x20035e28 = 0;
  *(uint64_t*)0x20035e30 = 0;
  *(uint64_t*)0x20035e38 = 0;
  *(uint64_t*)0x20035e40 = 0;
  *(uint64_t*)0x20035e48 = 0;
  *(uint64_t*)0x20035e50 = 0;
  *(uint64_t*)0x20035e58 = 0;
  *(uint64_t*)0x20035e60 = 0;
  *(uint16_t*)0x20035e68 = 2;
  *(uint16_t*)0x20035e6a = htobe16(0x4e22);
  *(uint32_t*)0x20035e6c = htobe32(0xe0000002);
  *(uint8_t*)0x20035e70 = 0;
  *(uint8_t*)0x20035e71 = 0;
  *(uint8_t*)0x20035e72 = 0;
  *(uint8_t*)0x20035e73 = 0;
  *(uint8_t*)0x20035e74 = 0;
  *(uint8_t*)0x20035e75 = 0;
  *(uint8_t*)0x20035e76 = 0;
  *(uint8_t*)0x20035e77 = 0;
  *(uint64_t*)0x20035e78 = 0;
  *(uint64_t*)0x20035e80 = 0;
  *(uint64_t*)0x20035e88 = 0;
  *(uint64_t*)0x20035e90 = 0;
  *(uint64_t*)0x20035e98 = 0;
  *(uint64_t*)0x20035ea0 = 0;
  *(uint64_t*)0x20035ea8 = 0;
  *(uint64_t*)0x20035eb0 = 0;
  *(uint64_t*)0x20035eb8 = 0;
  *(uint64_t*)0x20035ec0 = 0;
  *(uint64_t*)0x20035ec8 = 0;
  *(uint64_t*)0x20035ed0 = 0;
  *(uint64_t*)0x20035ed8 = 0;
  *(uint64_t*)0x20035ee0 = 0;
  *(uint64_t*)0x20035ee8 = 0;
  *(uint16_t*)0x20035ef0 = 2;
  *(uint16_t*)0x20035ef2 = htobe16(0x4e20);
  *(uint32_t*)0x20035ef4 = htobe32(0xe0000002);
  *(uint8_t*)0x20035ef8 = 0;
  *(uint8_t*)0x20035ef9 = 0;
  *(uint8_t*)0x20035efa = 0;
  *(uint8_t*)0x20035efb = 0;
  *(uint8_t*)0x20035efc = 0;
  *(uint8_t*)0x20035efd = 0;
  *(uint8_t*)0x20035efe = 0;
  *(uint8_t*)0x20035eff = 0;
  *(uint64_t*)0x20035f00 = 0;
  *(uint64_t*)0x20035f08 = 0;
  *(uint64_t*)0x20035f10 = 0;
  *(uint64_t*)0x20035f18 = 0;
  *(uint64_t*)0x20035f20 = 0;
  *(uint64_t*)0x20035f28 = 0;
  *(uint64_t*)0x20035f30 = 0;
  *(uint64_t*)0x20035f38 = 0;
  *(uint64_t*)0x20035f40 = 0;
  *(uint64_t*)0x20035f48 = 0;
  *(uint64_t*)0x20035f50 = 0;
  *(uint64_t*)0x20035f58 = 0;
  *(uint64_t*)0x20035f60 = 0;
  *(uint64_t*)0x20035f68 = 0;
  *(uint64_t*)0x20035f70 = 0;
  *(uint16_t*)0x20035f78 = 2;
  *(uint16_t*)0x20035f7a = htobe16(0x4e23);
  *(uint8_t*)0x20035f7c = 0xac;
  *(uint8_t*)0x20035f7d = 0x14;
  *(uint8_t*)0x20035f7e = 0;
  *(uint8_t*)0x20035f7f = 0xaa;
  *(uint8_t*)0x20035f80 = 0;
  *(uint8_t*)0x20035f81 = 0;
  *(uint8_t*)0x20035f82 = 0;
  *(uint8_t*)0x20035f83 = 0;
  *(uint8_t*)0x20035f84 = 0;
  *(uint8_t*)0x20035f85 = 0;
  *(uint8_t*)0x20035f86 = 0;
  *(uint8_t*)0x20035f87 = 0;
  *(uint64_t*)0x20035f88 = 0;
  *(uint64_t*)0x20035f90 = 0;
  *(uint64_t*)0x20035f98 = 0;
  *(uint64_t*)0x20035fa0 = 0;
  *(uint64_t*)0x20035fa8 = 0;
  *(uint64_t*)0x20035fb0 = 0;
  *(uint64_t*)0x20035fb8 = 0;
  *(uint64_t*)0x20035fc0 = 0;
  *(uint64_t*)0x20035fc8 = 0;
  *(uint64_t*)0x20035fd0 = 0;
  *(uint64_t*)0x20035fd8 = 0;
  *(uint64_t*)0x20035fe0 = 0;
  *(uint64_t*)0x20035fe8 = 0;
  *(uint64_t*)0x20035ff0 = 0;
  *(uint64_t*)0x20035ff8 = 0;
  syscall(__NR_setsockopt, r[0], 0, 0x30, 0x20035b28, 0x4d8);
  r[1] = syscall(__NR_socket, 2, 3, 0x81);
  memcpy((void*)0x20397cd8, "\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*)0x20397cf8 = 0xe;
  *(uint32_t*)0x20397cfc = 4;
  *(uint32_t*)0x20397d00 = 0x2c8;
  *(uint32_t*)0x20397d04 = -1;
  *(uint32_t*)0x20397d08 = 0;
  *(uint32_t*)0x20397d0c = 0;
  *(uint32_t*)0x20397d10 = 0;
  *(uint32_t*)0x20397d14 = -1;
  *(uint32_t*)0x20397d18 = -1;
  *(uint32_t*)0x20397d1c = 0;
  *(uint32_t*)0x20397d20 = 0;
  *(uint32_t*)0x20397d24 = 0;
  *(uint32_t*)0x20397d28 = -1;
  *(uint32_t*)0x20397d2c = 4;
  *(uint64_t*)0x20397d30 = 0x20012fc0;
  *(uint8_t*)0x20397d38 = 0;
  *(uint8_t*)0x20397d39 = 0;
  *(uint8_t*)0x20397d3a = 0;
  *(uint8_t*)0x20397d3b = 0;
  *(uint8_t*)0x20397d3c = 0;
  *(uint8_t*)0x20397d3d = 0;
  *(uint8_t*)0x20397d3e = 0;
  *(uint8_t*)0x20397d3f = 0;
  *(uint8_t*)0x20397d40 = 0;
  *(uint8_t*)0x20397d41 = 0;
  *(uint8_t*)0x20397d42 = 0;
  *(uint8_t*)0x20397d43 = 0;
  *(uint8_t*)0x20397d44 = 0;
  *(uint8_t*)0x20397d45 = 0;
  *(uint8_t*)0x20397d46 = 0;
  *(uint8_t*)0x20397d47 = 0;
  *(uint8_t*)0x20397d48 = 0;
  *(uint8_t*)0x20397d49 = 0;
  *(uint8_t*)0x20397d4a = 0;
  *(uint8_t*)0x20397d4b = 0;
  *(uint8_t*)0x20397d4c = 0;
  *(uint8_t*)0x20397d4d = 0;
  *(uint8_t*)0x20397d4e = 0;
  *(uint8_t*)0x20397d4f = 0;
  *(uint8_t*)0x20397d50 = 0;
  *(uint8_t*)0x20397d51 = 0;
  *(uint8_t*)0x20397d52 = 0;
  *(uint8_t*)0x20397d53 = 0;
  *(uint8_t*)0x20397d54 = 0;
  *(uint8_t*)0x20397d55 = 0;
  *(uint8_t*)0x20397d56 = 0;
  *(uint8_t*)0x20397d57 = 0;
  *(uint8_t*)0x20397d58 = 0;
  *(uint8_t*)0x20397d59 = 0;
  *(uint8_t*)0x20397d5a = 0;
  *(uint8_t*)0x20397d5b = 0;
  *(uint8_t*)0x20397d5c = 0;
  *(uint8_t*)0x20397d5d = 0;
  *(uint8_t*)0x20397d5e = 0;
  *(uint8_t*)0x20397d5f = 0;
  *(uint8_t*)0x20397d60 = 0;
  *(uint8_t*)0x20397d61 = 0;
  *(uint8_t*)0x20397d62 = 0;
  *(uint8_t*)0x20397d63 = 0;
  *(uint8_t*)0x20397d64 = 0;
  *(uint8_t*)0x20397d65 = 0;
  *(uint8_t*)0x20397d66 = 0;
  *(uint8_t*)0x20397d67 = 0;
  *(uint8_t*)0x20397d68 = 0;
  *(uint8_t*)0x20397d69 = 0;
  *(uint8_t*)0x20397d6a = 0;
  *(uint8_t*)0x20397d6b = 0;
  *(uint8_t*)0x20397d6c = 0;
  *(uint8_t*)0x20397d6d = 0;
  *(uint8_t*)0x20397d6e = 0;
  *(uint8_t*)0x20397d6f = 0;
  *(uint8_t*)0x20397d70 = 0;
  *(uint8_t*)0x20397d71 = 0;
  *(uint8_t*)0x20397d72 = 0;
  *(uint8_t*)0x20397d73 = 0;
  *(uint8_t*)0x20397d74 = 0;
  *(uint8_t*)0x20397d75 = 0;
  *(uint8_t*)0x20397d76 = 0;
  *(uint8_t*)0x20397d77 = 0;
  *(uint8_t*)0x20397d78 = 0;
  *(uint8_t*)0x20397d79 = 0;
  *(uint8_t*)0x20397d7a = 0;
  *(uint8_t*)0x20397d7b = 0;
  *(uint8_t*)0x20397d7c = 0;
  *(uint8_t*)0x20397d7d = 0;
  *(uint8_t*)0x20397d7e = 0;
  *(uint8_t*)0x20397d7f = 0;
  *(uint8_t*)0x20397d80 = 0;
  *(uint8_t*)0x20397d81 = 0;
  *(uint8_t*)0x20397d82 = 0;
  *(uint8_t*)0x20397d83 = 0;
  *(uint8_t*)0x20397d84 = 0;
  *(uint8_t*)0x20397d85 = 0;
  *(uint8_t*)0x20397d86 = 0;
  *(uint8_t*)0x20397d87 = 0;
  *(uint8_t*)0x20397d88 = 0;
  *(uint8_t*)0x20397d89 = 0;
  *(uint8_t*)0x20397d8a = 0;
  *(uint8_t*)0x20397d8b = 0;
  *(uint32_t*)0x20397d8c = 0;
  *(uint16_t*)0x20397d90 = 0x70;
  *(uint16_t*)0x20397d92 = 0x98;
  *(uint32_t*)0x20397d94 = 0;
  *(uint64_t*)0x20397d98 = 0;
  *(uint64_t*)0x20397da0 = 0;
  *(uint16_t*)0x20397da8 = 0x28;
  memcpy((void*)0x20397daa, "\x00\x00\x00\x00\x00\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*)0x20397dc7 = 0;
  *(uint32_t*)0x20397dc8 = 0xfffffffe;
  *(uint32_t*)0x20397dd0 = htobe32(0);
  *(uint8_t*)0x20397dd4 = 0xac;
  *(uint8_t*)0x20397dd5 = 0x14;
  *(uint8_t*)0x20397dd6 = 0;
  *(uint8_t*)0x20397dd7 = 0;
  *(uint32_t*)0x20397dd8 = htobe32(0);
  *(uint32_t*)0x20397ddc = htobe32(0);
  *(uint8_t*)0x20397de0 = 0x73;
  *(uint8_t*)0x20397de1 = 0x79;
  *(uint8_t*)0x20397de2 = 0x7a;
  *(uint8_t*)0x20397de3 = 0;
  *(uint8_t*)0x20397de4 = 0;
  *(uint8_t*)0x20397df0 = 0x73;
  *(uint8_t*)0x20397df1 = 0x79;
  *(uint8_t*)0x20397df2 = 0x7a;
  *(uint8_t*)0x20397df3 = 0;
  *(uint8_t*)0x20397df4 = 0;
  *(uint8_t*)0x20397e00 = 0;
  *(uint8_t*)0x20397e01 = 0;
  *(uint8_t*)0x20397e02 = 0;
  *(uint8_t*)0x20397e03 = 0;
  *(uint8_t*)0x20397e04 = 0;
  *(uint8_t*)0x20397e05 = 0;
  *(uint8_t*)0x20397e06 = 0;
  *(uint8_t*)0x20397e07 = 0;
  *(uint8_t*)0x20397e08 = 0;
  *(uint8_t*)0x20397e09 = 0;
  *(uint8_t*)0x20397e0a = 0;
  *(uint8_t*)0x20397e0b = 0;
  *(uint8_t*)0x20397e0c = 0;
  *(uint8_t*)0x20397e0d = 0;
  *(uint8_t*)0x20397e0e = 0;
  *(uint8_t*)0x20397e0f = 0;
  *(uint8_t*)0x20397e10 = 0;
  *(uint8_t*)0x20397e11 = 0;
  *(uint8_t*)0x20397e12 = 0;
  *(uint8_t*)0x20397e13 = 0;
  *(uint8_t*)0x20397e14 = 0;
  *(uint8_t*)0x20397e15 = 0;
  *(uint8_t*)0x20397e16 = 0;
  *(uint8_t*)0x20397e17 = 0;
  *(uint8_t*)0x20397e18 = 0;
  *(uint8_t*)0x20397e19 = 0;
  *(uint8_t*)0x20397e1a = 0;
  *(uint8_t*)0x20397e1b = 0;
  *(uint8_t*)0x20397e1c = 0;
  *(uint8_t*)0x20397e1d = 0;
  *(uint8_t*)0x20397e1e = 0;
  *(uint8_t*)0x20397e1f = 0;
  *(uint16_t*)0x20397e20 = 0;
  *(uint8_t*)0x20397e22 = 0;
  *(uint8_t*)0x20397e23 = 0;
  *(uint32_t*)0x20397e24 = 0;
  *(uint16_t*)0x20397e28 = 0x70;
  *(uint16_t*)0x20397e2a = 0x98;
  *(uint32_t*)0x20397e2c = 0;
  *(uint64_t*)0x20397e30 = 0;
  *(uint64_t*)0x20397e38 = 0;
  *(uint16_t*)0x20397e40 = 0x28;
  memcpy((void*)0x20397e42, "\x43\x4c\x41\x53\x53\x49\x46\x59\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00",
         29);
  *(uint8_t*)0x20397e5f = 0;
  *(uint32_t*)0x20397e60 = 0;
  *(uint32_t*)0x20397e68 = htobe32(0);
  *(uint32_t*)0x20397e6c = htobe32(0xe0000002);
  *(uint32_t*)0x20397e70 = htobe32(0);
  *(uint32_t*)0x20397e74 = htobe32(0);
  *(uint8_t*)0x20397e78 = 0x73;
  *(uint8_t*)0x20397e79 = 0x79;
  *(uint8_t*)0x20397e7a = 0x7a;
  *(uint8_t*)0x20397e7b = 0;
  *(uint8_t*)0x20397e7c = 0;
  memcpy((void*)0x20397e88,
         "\x6c\x6f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
         16);
  *(uint8_t*)0x20397e98 = 0;
  *(uint8_t*)0x20397e99 = 0;
  *(uint8_t*)0x20397e9a = 0;
  *(uint8_t*)0x20397e9b = 0;
  *(uint8_t*)0x20397e9c = 0;
  *(uint8_t*)0x20397e9d = 0;
  *(uint8_t*)0x20397e9e = 0;
  *(uint8_t*)0x20397e9f = 0;
  *(uint8_t*)0x20397ea0 = 0;
  *(uint8_t*)0x20397ea1 = 0;
  *(uint8_t*)0x20397ea2 = 0;
  *(uint8_t*)0x20397ea3 = 0;
  *(uint8_t*)0x20397ea4 = 0;
  *(uint8_t*)0x20397ea5 = 0;
  *(uint8_t*)0x20397ea6 = 0;
  *(uint8_t*)0x20397ea7 = 0;
  *(uint8_t*)0x20397ea8 = 0;
  *(uint8_t*)0x20397ea9 = 0;
  *(uint8_t*)0x20397eaa = 0;
  *(uint8_t*)0x20397eab = 0;
  *(uint8_t*)0x20397eac = 0;
  *(uint8_t*)0x20397ead = 0;
  *(uint8_t*)0x20397eae = 0;
  *(uint8_t*)0x20397eaf = 0;
  *(uint8_t*)0x20397eb0 = 0;
  *(uint8_t*)0x20397eb1 = 0;
  *(uint8_t*)0x20397eb2 = 0;
  *(uint8_t*)0x20397eb3 = 0;
  *(uint8_t*)0x20397eb4 = 0;
  *(uint8_t*)0x20397eb5 = 0;
  *(uint8_t*)0x20397eb6 = 0;
  *(uint8_t*)0x20397eb7 = 0;
  *(uint16_t*)0x20397eb8 = 0;
  *(uint8_t*)0x20397eba = 0;
  *(uint8_t*)0x20397ebb = 0;
  *(uint32_t*)0x20397ebc = 0;
  *(uint16_t*)0x20397ec0 = 0xa0;
  *(uint16_t*)0x20397ec2 = 0xc8;
  *(uint32_t*)0x20397ec4 = 0;
  *(uint64_t*)0x20397ec8 = 0;
  *(uint64_t*)0x20397ed0 = 0;
  *(uint16_t*)0x20397ed8 = 0x30;
  memcpy((void*)0x20397eda, "\x63\x6f\x6e\x6e\x6d\x61\x72\x6b\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00",
         29);
  *(uint8_t*)0x20397ef7 = 1;
  *(uint32_t*)0x20397ef8 = 0;
  *(uint32_t*)0x20397efc = 0;
  *(uint32_t*)0x20397f00 = 0;
  *(uint16_t*)0x20397f08 = 0x28;
  memcpy((void*)0x20397f0a, "\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*)0x20397f27 = 0;
  *(uint32_t*)0x20397f28 = 0;
  *(uint32_t*)0x20397f30 = htobe32(0);
  *(uint32_t*)0x20397f34 = htobe32(0xe0000002);
  *(uint32_t*)0x20397f38 = htobe32(0);
  *(uint32_t*)0x20397f3c = htobe32(-1);
  *(uint8_t*)0x20397f40 = 0x73;
  *(uint8_t*)0x20397f41 = 0x79;
  *(uint8_t*)0x20397f42 = 0x7a;
  *(uint8_t*)0x20397f43 = 0x30;
  *(uint8_t*)0x20397f44 = 0;
  memcpy((void*)0x20397f50,
         "\x86\xd3\xd6\x53\xc2\x5e\xa8\xd7\x4a\x86\xad\xd0\x35\xad\xfd\xcf",
         16);
  *(uint8_t*)0x20397f60 = 0;
  *(uint8_t*)0x20397f61 = 0;
  *(uint8_t*)0x20397f62 = 0;
  *(uint8_t*)0x20397f63 = 0;
  *(uint8_t*)0x20397f64 = 0;
  *(uint8_t*)0x20397f65 = 0;
  *(uint8_t*)0x20397f66 = 0;
  *(uint8_t*)0x20397f67 = 0;
  *(uint8_t*)0x20397f68 = 0;
  *(uint8_t*)0x20397f69 = 0;
  *(uint8_t*)0x20397f6a = 0;
  *(uint8_t*)0x20397f6b = 0;
  *(uint8_t*)0x20397f6c = 0;
  *(uint8_t*)0x20397f6d = 0;
  *(uint8_t*)0x20397f6e = 0;
  *(uint8_t*)0x20397f6f = 0;
  *(uint8_t*)0x20397f70 = 0;
  *(uint8_t*)0x20397f71 = 0;
  *(uint8_t*)0x20397f72 = 0;
  *(uint8_t*)0x20397f73 = 0;
  *(uint8_t*)0x20397f74 = 0;
  *(uint8_t*)0x20397f75 = 0;
  *(uint8_t*)0x20397f76 = 0;
  *(uint8_t*)0x20397f77 = 0;
  *(uint8_t*)0x20397f78 = 0;
  *(uint8_t*)0x20397f79 = 0;
  *(uint8_t*)0x20397f7a = 0;
  *(uint8_t*)0x20397f7b = 0;
  *(uint8_t*)0x20397f7c = 0;
  *(uint8_t*)0x20397f7d = 0;
  *(uint8_t*)0x20397f7e = 0;
  *(uint8_t*)0x20397f7f = 0;
  *(uint16_t*)0x20397f80 = 0;
  *(uint8_t*)0x20397f82 = 0;
  *(uint8_t*)0x20397f83 = 0;
  *(uint32_t*)0x20397f84 = 0;
  *(uint16_t*)0x20397f88 = 0x70;
  *(uint16_t*)0x20397f8a = 0xd0;
  *(uint32_t*)0x20397f8c = 0;
  *(uint64_t*)0x20397f90 = 0;
  *(uint64_t*)0x20397f98 = 0;
  *(uint16_t*)0x20397fa0 = 0x60;
  memcpy((void*)0x20397fa2, "\x43\x4c\x55\x53\x54\x45\x52\x49\x50\x00\x00\x00"
                            "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                            "\x00\x00\x00\x00\x00",
         29);
  *(uint8_t*)0x20397fbf = 0;
  *(uint32_t*)0x20397fc0 = 1;
  *(uint8_t*)0x20397fc4 = 0;
  *(uint8_t*)0x20397fc5 = 0;
  *(uint8_t*)0x20397fc6 = 0;
  *(uint8_t*)0x20397fc7 = 0;
  *(uint8_t*)0x20397fc8 = 0;
  *(uint8_t*)0x20397fc9 = 0;
  *(uint16_t*)0x20397fca = 0;
  *(uint16_t*)0x20397fcc = 0;
  *(uint16_t*)0x20397fce = 0;
  *(uint16_t*)0x20397fd0 = 0;
  *(uint16_t*)0x20397fd2 = 0;
  *(uint16_t*)0x20397fd4 = 0;
  *(uint16_t*)0x20397fd6 = 0;
  *(uint16_t*)0x20397fd8 = 0;
  *(uint16_t*)0x20397fda = 0;
  *(uint16_t*)0x20397fdc = 0;
  *(uint16_t*)0x20397fde = 0;
  *(uint16_t*)0x20397fe0 = 0;
  *(uint16_t*)0x20397fe2 = 0;
  *(uint16_t*)0x20397fe4 = 0;
  *(uint16_t*)0x20397fe6 = 0;
  *(uint16_t*)0x20397fe8 = 0;
  *(uint16_t*)0x20397fea = 0;
  *(uint16_t*)0x20397fec = 0;
  *(uint32_t*)0x20397ff0 = 0;
  *(uint32_t*)0x20397ff4 = 0;
  *(uint64_t*)0x20397ff8 = 0;
  *(uint64_t*)0x20012fc0 = 0;
  *(uint64_t*)0x20012fc8 = 0;
  *(uint64_t*)0x20012fd0 = 0;
  *(uint64_t*)0x20012fd8 = 0;
  *(uint64_t*)0x20012fe0 = 0;
  *(uint64_t*)0x20012fe8 = 0;
  *(uint64_t*)0x20012ff0 = 0;
  *(uint64_t*)0x20012ff8 = 0;
  syscall(__NR_setsockopt, r[1], 0, 0x40, 0x20397cd8, 0x328);
  *(uint8_t*)0x20009fe2 = -1;
  *(uint8_t*)0x20009fe3 = -1;
  *(uint8_t*)0x20009fe4 = -1;
  *(uint8_t*)0x20009fe5 = -1;
  *(uint8_t*)0x20009fe6 = -1;
  *(uint8_t*)0x20009fe7 = -1;
  *(uint8_t*)0x20009fe8 = 0xaa;
  *(uint8_t*)0x20009fe9 = 0xaa;
  *(uint8_t*)0x20009fea = 0xaa;
  *(uint8_t*)0x20009feb = 0xaa;
  *(uint8_t*)0x20009fec = 0;
  *(uint8_t*)0x20009fed = 0;
  *(uint16_t*)0x20009fee = htobe16(0x9100);
  STORE_BY_BITMASK(uint16_t, 0x20009ff0, 1, 0, 3);
  STORE_BY_BITMASK(uint16_t, 0x20009ff0, 0, 3, 1);
  STORE_BY_BITMASK(uint16_t, 0x20009ff0, 0x40, 4, 12);
  *(uint16_t*)0x20009ff2 = htobe16(0x8100);
  STORE_BY_BITMASK(uint16_t, 0x20009ff4, 4, 0, 3);
  STORE_BY_BITMASK(uint16_t, 0x20009ff4, 0xa63, 3, 1);
  STORE_BY_BITMASK(uint16_t, 0x20009ff4, -1, 4, 12);
  *(uint16_t*)0x20009ff6 = htobe16(0x8867);
  syz_emit_ethernet(0x16, 0x20009fe2, 0x20000000);
}

int main()
{
  setup_tun(0, true);
  loop();
  return 0;
}