// https://syzkaller.appspot.com/bug?id=5735d842f7ea3ed9220aca64952ac4aba7ba741c
// 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 <errno.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.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);
}

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);
  va_end(args);
  rv = system(command);
  if (rv) {
    if (panic)
      fail("command '%s' failed: %d", &command[0], rv);
  }
}

static int tunfd = -1;
static int tun_frags_enabled;

#define SYZ_TUN_MAX_PACKET_SIZE 1000

#define TUN_IFACE "syz_tun"

#define LOCAL_MAC "aa:aa:aa:aa:aa:aa"
#define REMOTE_MAC "aa:aa:aa:aa:aa:bb"

#define LOCAL_IPV4 "172.20.20.170"
#define REMOTE_IPV4 "172.20.20.187"

#define LOCAL_IPV6 "fe80::aa"
#define REMOTE_IPV6 "fe80::bb"

#define IFF_NAPI 0x0010
#define IFF_NAPI_FRAGS 0x0020

static void initialize_tun(void)
{
  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;
  }
  const int kTunFd = 252;
  if (dup2(tunfd, kTunFd) < 0)
    fail("dup2(tunfd, kTunFd) failed");
  close(tunfd);
  tunfd = kTunFd;

  struct ifreq ifr;
  memset(&ifr, 0, sizeof(ifr));
  strncpy(ifr.ifr_name, TUN_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;

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

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

  execute_command(1, "ip link set dev %s address %s", TUN_IFACE, LOCAL_MAC);
  execute_command(1, "ip addr add %s/24 dev %s", LOCAL_IPV4, TUN_IFACE);
  execute_command(1, "ip -6 addr add %s/120 dev %s", LOCAL_IPV6, TUN_IFACE);
  execute_command(1, "ip neigh add %s lladdr %s dev %s nud permanent",
                  REMOTE_IPV4, REMOTE_MAC, TUN_IFACE);
  execute_command(1, "ip -6 neigh add %s lladdr %s dev %s nud permanent",
                  REMOTE_IPV6, REMOTE_MAC, TUN_IFACE);
  execute_command(1, "ip link set dev %s up", TUN_IFACE);
}

#define DEV_IPV4 "172.20.20.%d"
#define DEV_IPV6 "fe80::%02hx"
#define DEV_MAC "aa:aa:aa:aa:aa:%02hx"

static void initialize_netdevices(void)
{
  unsigned i;
  const char* devtypes[] = {"ip6gretap", "bridge", "vcan", "bond", "team"};
  const char* devnames[] = {"lo",
                            "sit0",
                            "bridge0",
                            "vcan0",
                            "tunl0",
                            "gre0",
                            "gretap0",
                            "ip_vti0",
                            "ip6_vti0",
                            "ip6tnl0",
                            "ip6gre0",
                            "ip6gretap0",
                            "erspan0",
                            "bond0",
                            "veth0",
                            "veth1",
                            "team0",
                            "veth0_to_bridge",
                            "veth1_to_bridge",
                            "veth0_to_bond",
                            "veth1_to_bond",
                            "veth0_to_team",
                            "veth1_to_team"};
  const char* devmasters[] = {"bridge", "bond", "team"};

  for (i = 0; i < sizeof(devtypes) / (sizeof(devtypes[0])); i++)
    execute_command(0, "ip link add dev %s0 type %s", devtypes[i], devtypes[i]);
  execute_command(0, "ip link add type veth");

  for (i = 0; i < sizeof(devmasters) / (sizeof(devmasters[0])); i++) {
    execute_command(
        0, "ip link add name %s_slave_0 type veth peer name veth0_to_%s",
        devmasters[i], devmasters[i]);
    execute_command(
        0, "ip link add name %s_slave_1 type veth peer name veth1_to_%s",
        devmasters[i], devmasters[i]);
    execute_command(0, "ip link set %s_slave_0 master %s0", devmasters[i],
                    devmasters[i]);
    execute_command(0, "ip link set %s_slave_1 master %s0", devmasters[i],
                    devmasters[i]);
    execute_command(0, "ip link set veth0_to_%s up", devmasters[i]);
    execute_command(0, "ip link set veth1_to_%s up", devmasters[i]);
  }
  execute_command(0, "ip link set bridge_slave_0 up");
  execute_command(0, "ip link set bridge_slave_1 up");

  for (i = 0; i < sizeof(devnames) / (sizeof(devnames[0])); i++) {
    char addr[32];
    snprintf_check(addr, sizeof(addr), DEV_IPV4, i + 10);
    execute_command(0, "ip -4 addr add %s/24 dev %s", addr, devnames[i]);
    snprintf_check(addr, sizeof(addr), DEV_IPV6, i + 10);
    execute_command(0, "ip -6 addr add %s/120 dev %s", addr, devnames[i]);
    snprintf_check(addr, sizeof(addr), DEV_MAC, i + 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]);
  }
}

#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 = 32 << 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);

  if (unshare(CLONE_NEWNS)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(0x02000000)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
}

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

  sandbox_common();
  if (unshare(CLONE_NEWNET)) {
  }
  initialize_tun();
  initialize_netdevices();

  loop();
  doexit(1);
}

static void execute_one();
extern unsigned long long procid;

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

uint64_t r[1] = {0xffffffffffffffff};
void execute_one()
{
  long res = 0;
  res = syscall(__NR_socket, 2, 2, 0);
  if (res != -1)
    r[0] = res;
  *(uint16_t*)0x20000240 = 2;
  *(uint16_t*)0x20000242 = htobe16(0);
  *(uint8_t*)0x20000244 = 0xac;
  *(uint8_t*)0x20000245 = 0x14;
  *(uint8_t*)0x20000246 = 0x14;
  *(uint8_t*)0x20000247 = 0xaa;
  *(uint8_t*)0x20000248 = 0;
  *(uint8_t*)0x20000249 = 0;
  *(uint8_t*)0x2000024a = 0;
  *(uint8_t*)0x2000024b = 0;
  *(uint8_t*)0x2000024c = 0;
  *(uint8_t*)0x2000024d = 0;
  *(uint8_t*)0x2000024e = 0;
  *(uint8_t*)0x2000024f = 0;
  syscall(__NR_connect, r[0], 0x20000240, 0x10);
  *(uint16_t*)0x20000000 = 2;
  *(uint16_t*)0x20000002 = htobe16(0x4e25);
  *(uint32_t*)0x20000004 = htobe32(0xe0000002);
  *(uint8_t*)0x20000008 = 0;
  *(uint8_t*)0x20000009 = 0;
  *(uint8_t*)0x2000000a = 0;
  *(uint8_t*)0x2000000b = 0;
  *(uint8_t*)0x2000000c = 0;
  *(uint8_t*)0x2000000d = 0;
  *(uint8_t*)0x2000000e = 0;
  *(uint8_t*)0x2000000f = 0;
  syscall(__NR_sendto, r[0], 0x20000fc0, 0, 0x2004c044, 0x20000000, 0x10);
  *(uint8_t*)0x20000d80 = 0x7f;
  *(uint8_t*)0x20000d81 = 0x45;
  *(uint8_t*)0x20000d82 = 0x4c;
  *(uint8_t*)0x20000d83 = 0x46;
  *(uint8_t*)0x20000d84 = 0;
  *(uint8_t*)0x20000d85 = 0;
  *(uint8_t*)0x20000d86 = 0;
  *(uint8_t*)0x20000d87 = 0;
  *(uint64_t*)0x20000d88 = 0;
  *(uint16_t*)0x20000d90 = 0;
  *(uint16_t*)0x20000d92 = 0;
  *(uint32_t*)0x20000d94 = 0;
  *(uint32_t*)0x20000d98 = 0;
  *(uint32_t*)0x20000d9c = 0x38;
  *(uint32_t*)0x20000da0 = 0;
  *(uint32_t*)0x20000da4 = 0;
  *(uint16_t*)0x20000da8 = 0;
  *(uint16_t*)0x20000daa = 0x20;
  *(uint16_t*)0x20000dac = 0;
  *(uint16_t*)0x20000dae = 0;
  *(uint16_t*)0x20000db0 = 0;
  *(uint16_t*)0x20000db2 = 0;
  *(uint32_t*)0x20000db8 = 0;
  *(uint32_t*)0x20000dbc = 0;
  *(uint32_t*)0x20000dc0 = 0;
  *(uint32_t*)0x20000dc4 = 0;
  *(uint32_t*)0x20000dc8 = 0;
  *(uint32_t*)0x20000dcc = 0;
  *(uint32_t*)0x20000dd0 = 0;
  *(uint32_t*)0x20000dd4 = 0;
  *(uint64_t*)0x20000dd8 = 0;
  *(uint64_t*)0x20000de0 = 0;
  *(uint64_t*)0x20000de8 = 0;
  *(uint64_t*)0x20000df0 = 0;
  *(uint64_t*)0x20000df8 = 0;
  *(uint64_t*)0x20000e00 = 0;
  *(uint64_t*)0x20000e08 = 0;
  *(uint64_t*)0x20000e10 = 0;
  *(uint64_t*)0x20000e18 = 0;
  *(uint64_t*)0x20000e20 = 0;
  *(uint64_t*)0x20000e28 = 0;
  *(uint64_t*)0x20000e30 = 0;
  *(uint64_t*)0x20000e38 = 0;
  *(uint64_t*)0x20000e40 = 0;
  *(uint64_t*)0x20000e48 = 0;
  *(uint64_t*)0x20000e50 = 0;
  *(uint64_t*)0x20000e58 = 0;
  *(uint64_t*)0x20000e60 = 0;
  *(uint64_t*)0x20000e68 = 0;
  *(uint64_t*)0x20000e70 = 0;
  *(uint64_t*)0x20000e78 = 0;
  *(uint64_t*)0x20000e80 = 0;
  *(uint64_t*)0x20000e88 = 0;
  *(uint64_t*)0x20000e90 = 0;
  *(uint64_t*)0x20000e98 = 0;
  *(uint64_t*)0x20000ea0 = 0;
  *(uint64_t*)0x20000ea8 = 0;
  *(uint64_t*)0x20000eb0 = 0;
  *(uint64_t*)0x20000eb8 = 0;
  *(uint64_t*)0x20000ec0 = 0;
  *(uint64_t*)0x20000ec8 = 0;
  *(uint64_t*)0x20000ed0 = 0;
  *(uint64_t*)0x20000ed8 = 0;
  *(uint64_t*)0x20000ee0 = 0;
  *(uint64_t*)0x20000ee8 = 0;
  *(uint64_t*)0x20000ef0 = 0;
  *(uint64_t*)0x20000ef8 = 0;
  *(uint64_t*)0x20000f00 = 0;
  *(uint64_t*)0x20000f08 = 0;
  *(uint64_t*)0x20000f10 = 0;
  *(uint64_t*)0x20000f18 = 0;
  *(uint64_t*)0x20000f20 = 0;
  *(uint64_t*)0x20000f28 = 0;
  *(uint64_t*)0x20000f30 = 0;
  *(uint64_t*)0x20000f38 = 0;
  *(uint64_t*)0x20000f40 = 0;
  *(uint64_t*)0x20000f48 = 0;
  *(uint64_t*)0x20000f50 = 0;
  *(uint64_t*)0x20000f58 = 0;
  *(uint64_t*)0x20000f60 = 0;
  *(uint64_t*)0x20000f68 = 0;
  *(uint64_t*)0x20000f70 = 0;
  *(uint64_t*)0x20000f78 = 0;
  *(uint64_t*)0x20000f80 = 0;
  *(uint64_t*)0x20000f88 = 0;
  *(uint64_t*)0x20000f90 = 0;
  *(uint64_t*)0x20000f98 = 0;
  *(uint64_t*)0x20000fa0 = 0;
  *(uint64_t*)0x20000fa8 = 0;
  *(uint64_t*)0x20000fb0 = 0;
  *(uint64_t*)0x20000fb8 = 0;
  *(uint64_t*)0x20000fc0 = 0;
  *(uint64_t*)0x20000fc8 = 0;
  *(uint64_t*)0x20000fd0 = 0;
  *(uint64_t*)0x20000fd8 = 0;
  *(uint64_t*)0x20000fe0 = 0;
  *(uint64_t*)0x20000fe8 = 0;
  *(uint64_t*)0x20000ff0 = 0;
  *(uint64_t*)0x20000ff8 = 0;
  *(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;
  *(uint64_t*)0x20001040 = 0;
  *(uint64_t*)0x20001048 = 0;
  *(uint64_t*)0x20001050 = 0;
  *(uint64_t*)0x20001058 = 0;
  *(uint64_t*)0x20001060 = 0;
  *(uint64_t*)0x20001068 = 0;
  *(uint64_t*)0x20001070 = 0;
  *(uint64_t*)0x20001078 = 0;
  *(uint64_t*)0x20001080 = 0;
  *(uint64_t*)0x20001088 = 0;
  *(uint64_t*)0x20001090 = 0;
  *(uint64_t*)0x20001098 = 0;
  *(uint64_t*)0x200010a0 = 0;
  *(uint64_t*)0x200010a8 = 0;
  *(uint64_t*)0x200010b0 = 0;
  *(uint64_t*)0x200010b8 = 0;
  *(uint64_t*)0x200010c0 = 0;
  *(uint64_t*)0x200010c8 = 0;
  *(uint64_t*)0x200010d0 = 0;
  *(uint64_t*)0x200010d8 = 0;
  *(uint64_t*)0x200010e0 = 0;
  *(uint64_t*)0x200010e8 = 0;
  *(uint64_t*)0x200010f0 = 0;
  *(uint64_t*)0x200010f8 = 0;
  *(uint64_t*)0x20001100 = 0;
  *(uint64_t*)0x20001108 = 0;
  *(uint64_t*)0x20001110 = 0;
  *(uint64_t*)0x20001118 = 0;
  *(uint64_t*)0x20001120 = 0;
  *(uint64_t*)0x20001128 = 0;
  *(uint64_t*)0x20001130 = 0;
  *(uint64_t*)0x20001138 = 0;
  *(uint64_t*)0x20001140 = 0;
  *(uint64_t*)0x20001148 = 0;
  *(uint64_t*)0x20001150 = 0;
  *(uint64_t*)0x20001158 = 0;
  *(uint64_t*)0x20001160 = 0;
  *(uint64_t*)0x20001168 = 0;
  *(uint64_t*)0x20001170 = 0;
  *(uint64_t*)0x20001178 = 0;
  *(uint64_t*)0x20001180 = 0;
  *(uint64_t*)0x20001188 = 0;
  *(uint64_t*)0x20001190 = 0;
  *(uint64_t*)0x20001198 = 0;
  *(uint64_t*)0x200011a0 = 0;
  *(uint64_t*)0x200011a8 = 0;
  *(uint64_t*)0x200011b0 = 0;
  *(uint64_t*)0x200011b8 = 0;
  *(uint64_t*)0x200011c0 = 0;
  *(uint64_t*)0x200011c8 = 0;
  *(uint64_t*)0x200011d0 = 0;
  *(uint64_t*)0x200011d8 = 0;
  *(uint64_t*)0x200011e0 = 0;
  *(uint64_t*)0x200011e8 = 0;
  *(uint64_t*)0x200011f0 = 0;
  *(uint64_t*)0x200011f8 = 0;
  *(uint64_t*)0x20001200 = 0;
  *(uint64_t*)0x20001208 = 0;
  *(uint64_t*)0x20001210 = 0;
  *(uint64_t*)0x20001218 = 0;
  *(uint64_t*)0x20001220 = 0;
  *(uint64_t*)0x20001228 = 0;
  *(uint64_t*)0x20001230 = 0;
  *(uint64_t*)0x20001238 = 0;
  *(uint64_t*)0x20001240 = 0;
  *(uint64_t*)0x20001248 = 0;
  *(uint64_t*)0x20001250 = 0;
  *(uint64_t*)0x20001258 = 0;
  *(uint64_t*)0x20001260 = 0;
  *(uint64_t*)0x20001268 = 0;
  *(uint64_t*)0x20001270 = 0;
  *(uint64_t*)0x20001278 = 0;
  *(uint64_t*)0x20001280 = 0;
  *(uint64_t*)0x20001288 = 0;
  *(uint64_t*)0x20001290 = 0;
  *(uint64_t*)0x20001298 = 0;
  *(uint64_t*)0x200012a0 = 0;
  *(uint64_t*)0x200012a8 = 0;
  *(uint64_t*)0x200012b0 = 0;
  *(uint64_t*)0x200012b8 = 0;
  *(uint64_t*)0x200012c0 = 0;
  *(uint64_t*)0x200012c8 = 0;
  *(uint64_t*)0x200012d0 = 0;
  *(uint64_t*)0x200012d8 = 0;
  *(uint64_t*)0x200012e0 = 0;
  *(uint64_t*)0x200012e8 = 0;
  *(uint64_t*)0x200012f0 = 0;
  *(uint64_t*)0x200012f8 = 0;
  *(uint64_t*)0x20001300 = 0;
  *(uint64_t*)0x20001308 = 0;
  *(uint64_t*)0x20001310 = 0;
  *(uint64_t*)0x20001318 = 0;
  *(uint64_t*)0x20001320 = 0;
  *(uint64_t*)0x20001328 = 0;
  *(uint64_t*)0x20001330 = 0;
  *(uint64_t*)0x20001338 = 0;
  *(uint64_t*)0x20001340 = 0;
  *(uint64_t*)0x20001348 = 0;
  *(uint64_t*)0x20001350 = 0;
  *(uint64_t*)0x20001358 = 0;
  *(uint64_t*)0x20001360 = 0;
  *(uint64_t*)0x20001368 = 0;
  *(uint64_t*)0x20001370 = 0;
  *(uint64_t*)0x20001378 = 0;
  *(uint64_t*)0x20001380 = 0;
  *(uint64_t*)0x20001388 = 0;
  *(uint64_t*)0x20001390 = 0;
  *(uint64_t*)0x20001398 = 0;
  *(uint64_t*)0x200013a0 = 0;
  *(uint64_t*)0x200013a8 = 0;
  *(uint64_t*)0x200013b0 = 0;
  *(uint64_t*)0x200013b8 = 0;
  *(uint64_t*)0x200013c0 = 0;
  *(uint64_t*)0x200013c8 = 0;
  *(uint64_t*)0x200013d0 = 0;
  syscall(__NR_write, r[0], 0x20000d80, 0x658);
  *(uint32_t*)0x20000000 = 0;
  *(uint32_t*)0x20000004 = 0;
  *(uint32_t*)0x20000008 = 0;
  *(uint32_t*)0x2000000c = 0;
  *(uint32_t*)0x20000010 = 0;
  *(uint32_t*)0x20000014 = 0;
  syz_emit_ethernet(1, 0x200000c0, 0x20000000);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  for (;;) {
    int pid = do_sandbox_none();
    int status = 0;
    while (waitpid(pid, &status, __WALL) != pid) {
    }
  }
}