// https://syzkaller.appspot.com/bug?id=7ee4fae24af0cf8609600eb0798d9c5af9d3e2a5
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <endian.h>
#include <stdint.h>
#include <string.h>
#include <sys/syscall.h>
#include <unistd.h>

#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;                                                  \
  }

struct csum_inet {
  uint32_t acc;
};

static void csum_inet_init(struct csum_inet* csum)
{
  csum->acc = 0;
}

static void csum_inet_update(struct csum_inet* csum, const uint8_t* data,
                             size_t length)
{
  if (length == 0)
    return;

  size_t i;
  for (i = 0; i < length - 1; i += 2)
    csum->acc += *(uint16_t*)&data[i];

  if (length & 1)
    csum->acc += (uint16_t)data[length - 1];

  while (csum->acc > 0xffff)
    csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16);
}

static uint16_t csum_inet_digest(struct csum_inet* csum)
{
  return ~csum->acc;
}

uint64_t r[1] = {0xffffffffffffffff};
void loop()
{
  long res = 0;
  res = syscall(__NR_socket, 2, 3, 6);
  if (res != -1)
    r[0] = res;
  *(uint16_t*)0x205b5ff0 = 2;
  *(uint16_t*)0x205b5ff2 = htobe16(0x4e20);
  *(uint32_t*)0x205b5ff4 = htobe32(0);
  *(uint8_t*)0x205b5ff8 = 0;
  *(uint8_t*)0x205b5ff9 = 0;
  *(uint8_t*)0x205b5ffa = 0;
  *(uint8_t*)0x205b5ffb = 0;
  *(uint8_t*)0x205b5ffc = 0;
  *(uint8_t*)0x205b5ffd = 0;
  *(uint8_t*)0x205b5ffe = 0;
  *(uint8_t*)0x205b5fff = 0;
  syscall(__NR_sendto, r[0], 0x2014cf2c, 0, 0x8000, 0x205b5ff0, 0x10);
  memcpy((void*)0x20000100, "\x00\x00\x00\xa6\x76\xf9\xc0\x2c\x55\x36\x82\xea"
                            "\xad\x62\xef\x04\x7b\xa6\xce\xf8\x33\x51\xf0\x27"
                            "\x0f\xb9\x18\x50\xc6\x9f\xc1\x2e\xa2\xda\xa6\xd2"
                            "\x62\xb9\x12\xb9",
         40);
  *(uint16_t*)0x200001c0 = 2;
  *(uint16_t*)0x200001c2 = htobe16(0x4e20);
  *(uint32_t*)0x200001c4 = htobe32(0);
  *(uint8_t*)0x200001c8 = 0;
  *(uint8_t*)0x200001c9 = 0;
  *(uint8_t*)0x200001ca = 0;
  *(uint8_t*)0x200001cb = 0;
  *(uint8_t*)0x200001cc = 0;
  *(uint8_t*)0x200001cd = 0;
  *(uint8_t*)0x200001ce = 0;
  *(uint8_t*)0x200001cf = 0;
  syscall(__NR_sendto, r[0], 0x20000100, 0x28, 0, 0x200001c0, 0x10);
  memcpy((void*)0x20101000, "\xcd\x39\x0b\x08\x1b\xf2", 6);
  *(uint8_t*)0x20101006 = -1;
  *(uint8_t*)0x20101007 = -1;
  *(uint8_t*)0x20101008 = -1;
  *(uint8_t*)0x20101009 = -1;
  *(uint8_t*)0x2010100a = -1;
  *(uint8_t*)0x2010100b = -1;
  *(uint16_t*)0x2010100c = htobe16(0x86dd);
  STORE_BY_BITMASK(uint8_t, 0x2010100e, 0, 0, 4);
  STORE_BY_BITMASK(uint8_t, 0x2010100e, 6, 4, 4);
  memcpy((void*)0x2010100f, "\x02\x29\x0f", 3);
  *(uint16_t*)0x20101012 = htobe16(0x30);
  *(uint8_t*)0x20101014 = 0x2c;
  *(uint8_t*)0x20101015 = 0;
  *(uint8_t*)0x20101016 = 0;
  *(uint8_t*)0x20101017 = 0;
  *(uint8_t*)0x20101018 = 0;
  *(uint8_t*)0x20101019 = 0;
  *(uint8_t*)0x2010101a = 0;
  *(uint8_t*)0x2010101b = 0;
  *(uint8_t*)0x2010101c = 0;
  *(uint8_t*)0x2010101d = 0;
  *(uint8_t*)0x2010101e = 0;
  *(uint8_t*)0x2010101f = 0;
  *(uint8_t*)0x20101020 = -1;
  *(uint8_t*)0x20101021 = -1;
  *(uint32_t*)0x20101022 = htobe32(0);
  *(uint8_t*)0x20101026 = -1;
  *(uint8_t*)0x20101027 = 2;
  *(uint8_t*)0x20101028 = 0;
  *(uint8_t*)0x20101029 = 0;
  *(uint8_t*)0x2010102a = 0;
  *(uint8_t*)0x2010102b = 0;
  *(uint8_t*)0x2010102c = 0;
  *(uint8_t*)0x2010102d = 0;
  *(uint8_t*)0x2010102e = 0;
  *(uint8_t*)0x2010102f = 0;
  *(uint8_t*)0x20101030 = 0;
  *(uint8_t*)0x20101031 = 0;
  *(uint8_t*)0x20101032 = 0;
  *(uint8_t*)0x20101033 = 0;
  *(uint8_t*)0x20101034 = 0;
  *(uint8_t*)0x20101035 = 1;
  *(uint8_t*)0x20101036 = 2;
  *(uint8_t*)0x20101037 = 0;
  *(uint16_t*)0x20101038 = 0;
  *(uint32_t*)0x2010103a = htobe32(0);
  STORE_BY_BITMASK(uint8_t, 0x2010103e, 0, 0, 4);
  STORE_BY_BITMASK(uint8_t, 0x2010103e, 6, 4, 4);
  memcpy((void*)0x2010103f, "\x94\x33\xdf", 3);
  *(uint16_t*)0x20101042 = htobe16(0);
  *(uint8_t*)0x20101044 = 0;
  *(uint8_t*)0x20101045 = 0;
  *(uint64_t*)0x20101046 = htobe64(0);
  *(uint64_t*)0x2010104e = htobe64(1);
  *(uint8_t*)0x20101056 = 0xfe;
  *(uint8_t*)0x20101057 = 0x80;
  *(uint8_t*)0x20101058 = 0;
  *(uint8_t*)0x20101059 = 0;
  *(uint8_t*)0x2010105a = 0;
  *(uint8_t*)0x2010105b = 0;
  *(uint8_t*)0x2010105c = 0;
  *(uint8_t*)0x2010105d = 0;
  *(uint8_t*)0x2010105e = 0xb;
  *(uint8_t*)0x2010105f = 0;
  *(uint8_t*)0x20101060 = 0;
  *(uint8_t*)0x20101061 = 0;
  *(uint8_t*)0x20101062 = 0;
  *(uint8_t*)0x20101063 = 0;
  *(uint8_t*)0x20101064 = 0;
  *(uint8_t*)0x20101065 = 0;
  struct csum_inet csum_1;
  csum_inet_init(&csum_1);
  csum_inet_update(&csum_1, (const uint8_t*)0x20101016, 16);
  csum_inet_update(&csum_1, (const uint8_t*)0x20101026, 16);
  uint32_t csum_1_chunk_2 = 0x30000000;
  csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_2, 4);
  uint32_t csum_1_chunk_3 = 0x3a000000;
  csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_3, 4);
  csum_inet_update(&csum_1, (const uint8_t*)0x20101036, 48);
  *(uint16_t*)0x20101038 = csum_inet_digest(&csum_1);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  loop();
  return 0;
}