// https://syzkaller.appspot.com/bug?id=566325c29e627765e4f5d223163e5c15191f0f46
// 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, 0xa, 2, 0);
  if (res != -1)
    r[0] = res;
  *(uint16_t*)0x20000000 = 0xa;
  *(uint16_t*)0x20000002 = htobe16(0x4e20);
  *(uint32_t*)0x20000004 = 0;
  *(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;
  *(uint8_t*)0x20000010 = 0;
  *(uint8_t*)0x20000011 = 0;
  *(uint8_t*)0x20000012 = 0;
  *(uint8_t*)0x20000013 = 0;
  *(uint8_t*)0x20000014 = 0;
  *(uint8_t*)0x20000015 = 0;
  *(uint8_t*)0x20000016 = 0;
  *(uint8_t*)0x20000017 = 0;
  *(uint32_t*)0x20000018 = 0;
  syscall(__NR_connect, r[0], 0x20000000, 0x1c);
  *(uint64_t*)0x20021fc8 = 0;
  *(uint32_t*)0x20021fd0 = 0;
  *(uint64_t*)0x20021fd8 = 0x20000040;
  *(uint64_t*)0x20000040 = 0x20000340;
  *(uint64_t*)0x20000048 = 0;
  *(uint64_t*)0x20021fe0 = 1;
  *(uint64_t*)0x20021fe8 = 0x20000040;
  *(uint64_t*)0x20021ff0 = 0;
  *(uint32_t*)0x20021ff8 = 0;
  syscall(__NR_sendmsg, r[0], 0x20021fc8, 0xc100);
  *(uint64_t*)0x200000c0 = 0;
  *(uint32_t*)0x200000c8 = 0;
  *(uint64_t*)0x200000d0 = 0x20002ff0;
  *(uint64_t*)0x20002ff0 = 0x20000200;
  memcpy((void*)0x20000200,
         "\xbc\x67\x9d\x58\x83\x80\x9d\xb8\xdc\x59\xd7\x1e\x30\xcd\xb9\xcb\xf0"
         "\xb9\xfb\xa3\x24\xe1\xcd\xe3\x06\xcc\xbf\x7a\x71\x3d\x61\x6d\xf1\xc6"
         "\x87\x49\x8e\xb3\x7c\x0e\x7d\x28\x9c\x65\x1a\xeb\xf0\xe9\xf1\x3f\x8b"
         "\xf7\xcc\x68\x59\x66\x6c\x1d\xf6\xde\xd5\x0e\x89\x87\x21\x4e\xa9",
         67);
  *(uint64_t*)0x20002ff8 = 0x43;
  *(uint64_t*)0x200000d8 = 1;
  *(uint64_t*)0x200000e0 = 0x20000040;
  *(uint64_t*)0x200000e8 = 0;
  *(uint32_t*)0x200000f0 = 0;
  syscall(__NR_sendmsg, r[0], 0x200000c0, 0);
  *(uint8_t*)0x20694ffe = -1;
  *(uint8_t*)0x20694fff = -1;
  *(uint8_t*)0x20695000 = -1;
  *(uint8_t*)0x20695001 = -1;
  *(uint8_t*)0x20695002 = -1;
  *(uint8_t*)0x20695003 = -1;
  *(uint8_t*)0x20695004 = 1;
  *(uint8_t*)0x20695005 = 0x80;
  *(uint8_t*)0x20695006 = 0xc2;
  *(uint8_t*)0x20695007 = 0;
  *(uint8_t*)0x20695008 = 0;
  *(uint8_t*)0x20695009 = 0;
  *(uint16_t*)0x2069500a = htobe16(0x86dd);
  STORE_BY_BITMASK(uint8_t, 0x2069500c, 0, 0, 4);
  STORE_BY_BITMASK(uint8_t, 0x2069500c, 6, 4, 4);
  memcpy((void*)0x2069500d, "\x06\xf5\x26", 3);
  *(uint16_t*)0x20695010 = htobe16(8);
  *(uint8_t*)0x20695012 = 0x11;
  *(uint8_t*)0x20695013 = 0;
  *(uint8_t*)0x20695014 = 0;
  *(uint8_t*)0x20695015 = 0;
  *(uint8_t*)0x20695016 = 0;
  *(uint8_t*)0x20695017 = 0;
  *(uint8_t*)0x20695018 = 0;
  *(uint8_t*)0x20695019 = 0;
  *(uint8_t*)0x2069501a = 0;
  *(uint8_t*)0x2069501b = 0;
  *(uint8_t*)0x2069501c = 0;
  *(uint8_t*)0x2069501d = 0;
  *(uint8_t*)0x2069501e = 0;
  *(uint8_t*)0x2069501f = 0;
  *(uint8_t*)0x20695020 = 0;
  *(uint8_t*)0x20695021 = 0;
  *(uint8_t*)0x20695022 = 0;
  *(uint8_t*)0x20695023 = 0;
  *(uint8_t*)0x20695024 = -1;
  *(uint8_t*)0x20695025 = 2;
  *(uint8_t*)0x20695026 = 0;
  *(uint8_t*)0x20695027 = 0;
  *(uint8_t*)0x20695028 = 0;
  *(uint8_t*)0x20695029 = 0;
  *(uint8_t*)0x2069502a = 0;
  *(uint8_t*)0x2069502b = 0;
  *(uint8_t*)0x2069502c = 0;
  *(uint8_t*)0x2069502d = 0;
  *(uint8_t*)0x2069502e = 0;
  *(uint8_t*)0x2069502f = 0;
  *(uint8_t*)0x20695030 = 0;
  *(uint8_t*)0x20695031 = 0;
  *(uint8_t*)0x20695032 = 0;
  *(uint8_t*)0x20695033 = 1;
  *(uint16_t*)0x20695034 = htobe16(0);
  *(uint16_t*)0x20695036 = htobe16(0x4e22);
  *(uint16_t*)0x20695038 = htobe16(8);
  *(uint16_t*)0x2069503a = 0;
  *(uint32_t*)0x20775000 = 0;
  *(uint32_t*)0x20775004 = 0;
  *(uint32_t*)0x20775008 = 0;
  *(uint32_t*)0x2077500c = 0;
  *(uint32_t*)0x20775010 = 0;
  *(uint32_t*)0x20775014 = 0;
  struct csum_inet csum_1;
  csum_inet_init(&csum_1);
  csum_inet_update(&csum_1, (const uint8_t*)0x20695014, 16);
  csum_inet_update(&csum_1, (const uint8_t*)0x20695024, 16);
  uint32_t csum_1_chunk_2 = 0x8000000;
  csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_2, 4);
  uint32_t csum_1_chunk_3 = 0x11000000;
  csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_3, 4);
  csum_inet_update(&csum_1, (const uint8_t*)0x20695034, 8);
  *(uint16_t*)0x2069503a = csum_inet_digest(&csum_1);
}

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