// https://syzkaller.appspot.com/bug?id=4e947674d10b0fb0cb94d4d723989cee439a71d6
// 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[2] = {0xffffffffffffffff, 0xffffffffffffffff};
void loop()
{
  long res;
  res = syscall(__NR_socket, 0xf, 3, 2);
  if (res != -1)
    r[0] = res;
  *(uint64_t*)0x20360000 = 0;
  *(uint32_t*)0x20360008 = 0;
  *(uint64_t*)0x20360010 = 0x2035d000;
  *(uint64_t*)0x2035d000 = 0x200001c0;
  memcpy((void*)0x200001c0,
         "\x02\x0d\x00\x00\x10\x00\x00\x00\x16\x00\x00\x00\x00\x00\x00\x00\x03"
         "\x00\x06\x00\x00\x00\x00\x00\x02\x00\x00\x00\x31\xeb\xf8\xc7\x00\x00"
         "\x00\x00\x00\x00\x00\x00\x03\x00\x05\x00\x00\x00\x00\x00\x02\x00\x00"
         "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x08\x00\x12\x00"
         "\x02\x00\x01\x03\x00\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x03"
         "\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1d\x00\x00\x01\x01\x00"
         "\xc5\x8a\x47\x56\x6f\x8d\x45\x15\x7c\x97\xec\x3a\x00\x00\x00\x00\x00"
         "\x00\x00\x00\x00\x00\x00\x00\x00\x00",
         128);
  *(uint64_t*)0x2035d008 = 0x80;
  *(uint64_t*)0x20360018 = 1;
  *(uint64_t*)0x20360020 = 0;
  *(uint64_t*)0x20360028 = 0;
  *(uint32_t*)0x20360030 = 0;
  syscall(__NR_sendmsg, r[0], 0x20360000, 0);
  res = syscall(__NR_socket, 2, 2, 0x88);
  if (res != -1)
    r[1] = res;
  *(uint16_t*)0x20b9aff0 = 2;
  *(uint16_t*)0x20b9aff2 = htobe16(0x4e20);
  *(uint32_t*)0x20b9aff4 = htobe32(0);
  *(uint8_t*)0x20b9aff8 = 0;
  *(uint8_t*)0x20b9aff9 = 0;
  *(uint8_t*)0x20b9affa = 0;
  *(uint8_t*)0x20b9affb = 0;
  *(uint8_t*)0x20b9affc = 0;
  *(uint8_t*)0x20b9affd = 0;
  *(uint8_t*)0x20b9affe = 0;
  *(uint8_t*)0x20b9afff = 0;
  syscall(__NR_bind, r[1], 0x20b9aff0, 0x10);
  *(uint16_t*)0x20319ff0 = 2;
  *(uint16_t*)0x20319ff2 = htobe16(0x4e20);
  *(uint32_t*)0x20319ff4 = htobe32(0);
  *(uint8_t*)0x20319ff8 = 0;
  *(uint8_t*)0x20319ff9 = 0;
  *(uint8_t*)0x20319ffa = 0;
  *(uint8_t*)0x20319ffb = 0;
  *(uint8_t*)0x20319ffc = 0;
  *(uint8_t*)0x20319ffd = 0;
  *(uint8_t*)0x20319ffe = 0;
  *(uint8_t*)0x20319fff = 0;
  syscall(__NR_sendto, r[1], 0x20e7c000, 0, 0x8084, 0x20319ff0, 0x10);
  *(uint16_t*)0x2082dff0 = 2;
  *(uint16_t*)0x2082dff2 = htobe16(0);
  *(uint8_t*)0x2082dff4 = 0xac;
  *(uint8_t*)0x2082dff5 = 0x14;
  *(uint8_t*)0x2082dff6 = 0x14;
  *(uint8_t*)0x2082dff7 = 0xaa;
  *(uint8_t*)0x2082dff8 = 0;
  *(uint8_t*)0x2082dff9 = 0;
  *(uint8_t*)0x2082dffa = 0;
  *(uint8_t*)0x2082dffb = 0;
  *(uint8_t*)0x2082dffc = 0;
  *(uint8_t*)0x2082dffd = 0;
  *(uint8_t*)0x2082dffe = 0;
  *(uint8_t*)0x2082dfff = 0;
  syscall(__NR_sendto, r[1], 0x20000000, 0, 0, 0x2082dff0, 0x10);
  *(uint8_t*)0x208a6000 = 1;
  *(uint8_t*)0x208a6001 = 0x80;
  *(uint8_t*)0x208a6002 = 0xc2;
  *(uint8_t*)0x208a6003 = 0;
  *(uint8_t*)0x208a6004 = 0;
  *(uint8_t*)0x208a6005 = 0;
  memcpy((void*)0x208a6006, "\x7d\x73\xcf\x61\x10\x0f", 6);
  *(uint16_t*)0x208a600c = htobe16(0x800);
  STORE_BY_BITMASK(uint8_t, 0x208a600e, 5, 0, 4);
  STORE_BY_BITMASK(uint8_t, 0x208a600e, 4, 4, 4);
  STORE_BY_BITMASK(uint8_t, 0x208a600f, 0, 0, 2);
  STORE_BY_BITMASK(uint8_t, 0x208a600f, 0, 2, 6);
  *(uint16_t*)0x208a6010 = htobe16(0x1c);
  *(uint16_t*)0x208a6012 = htobe16(0);
  *(uint16_t*)0x208a6014 = htobe16(0);
  *(uint8_t*)0x208a6016 = 0;
  *(uint8_t*)0x208a6017 = 2;
  *(uint16_t*)0x208a6018 = 0;
  *(uint32_t*)0x208a601a = htobe32(0);
  *(uint32_t*)0x208a601e = htobe32(-1);
  *(uint8_t*)0x208a6022 = 0x16;
  *(uint8_t*)0x208a6023 = 0;
  *(uint16_t*)0x208a6024 = 0;
  *(uint32_t*)0x208a6026 = htobe32(0xe0000002);
  *(uint32_t*)0x20000000 = 0;
  *(uint32_t*)0x20000004 = 0;
  *(uint32_t*)0x20000008 = 0;
  *(uint32_t*)0x2000000c = 0;
  *(uint32_t*)0x20000010 = 0;
  *(uint32_t*)0x20000014 = 0;
  struct csum_inet csum_1;
  csum_inet_init(&csum_1);
  csum_inet_update(&csum_1, (const uint8_t*)0x208a6022, 8);
  *(uint16_t*)0x208a6024 = csum_inet_digest(&csum_1);
  struct csum_inet csum_2;
  csum_inet_init(&csum_2);
  csum_inet_update(&csum_2, (const uint8_t*)0x208a600e, 20);
  *(uint16_t*)0x208a6018 = csum_inet_digest(&csum_2);
}

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