// https://syzkaller.appspot.com/bug?id=f9c94b10e49ae0433f27c4838c7e0f0a321606f5
// 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};
void loop()
{
  long res = 0;
  *(uint8_t*)0x2000a000 = -1;
  *(uint8_t*)0x2000a001 = 0xe0;
  *(uint8_t*)0x2000a002 = -1;
  *(uint8_t*)0x2000a003 = -1;
  *(uint8_t*)0x2000a004 = -1;
  *(uint8_t*)0x2000a005 = -1;
  *(uint8_t*)0x2000a006 = -1;
  *(uint8_t*)0x2000a007 = -1;
  *(uint8_t*)0x2000a008 = -1;
  *(uint8_t*)0x2000a009 = -1;
  *(uint8_t*)0x2000a00a = -1;
  *(uint8_t*)0x2000a00b = -1;
  *(uint16_t*)0x2000a00c = htobe16(0x800);
  STORE_BY_BITMASK(uint8_t, 0x2000a00e, 5, 0, 4);
  STORE_BY_BITMASK(uint8_t, 0x2000a00e, 4, 4, 4);
  STORE_BY_BITMASK(uint8_t, 0x2000a00f, 0, 0, 2);
  STORE_BY_BITMASK(uint8_t, 0x2000a00f, 0, 2, 6);
  *(uint16_t*)0x2000a010 = htobe16(0x1c);
  *(uint16_t*)0x2000a012 = htobe16(0);
  *(uint16_t*)0x2000a014 = htobe16(0);
  *(uint8_t*)0x2000a016 = 0;
  *(uint8_t*)0x2000a017 = 0x11;
  *(uint16_t*)0x2000a018 = 0;
  *(uint8_t*)0x2000a01a = 0xac;
  *(uint8_t*)0x2000a01b = 0x14;
  *(uint8_t*)0x2000a01c = -1;
  *(uint8_t*)0x2000a01d = 0xbb;
  *(uint32_t*)0x2000a01e = htobe32(0xe0000001);
  *(uint16_t*)0x2000a022 = htobe16(0);
  *(uint16_t*)0x2000a024 = htobe16(0x4e21);
  *(uint16_t*)0x2000a026 = htobe16(8);
  *(uint16_t*)0x2000a028 = 0;
  struct csum_inet csum_1;
  csum_inet_init(&csum_1);
  csum_inet_update(&csum_1, (const uint8_t*)0x2000a01a, 4);
  csum_inet_update(&csum_1, (const uint8_t*)0x2000a01e, 4);
  uint16_t csum_1_chunk_2 = 0x1100;
  csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_2, 2);
  uint16_t csum_1_chunk_3 = 0x800;
  csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_3, 2);
  csum_inet_update(&csum_1, (const uint8_t*)0x2000a022, 8);
  *(uint16_t*)0x2000a028 = csum_inet_digest(&csum_1);
  struct csum_inet csum_2;
  csum_inet_init(&csum_2);
  csum_inet_update(&csum_2, (const uint8_t*)0x2000a00e, 20);
  *(uint16_t*)0x2000a018 = csum_inet_digest(&csum_2);
  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 = 0x20000080;
  *(uint8_t*)0x20000080 = 2;
  *(uint8_t*)0x20000081 = 0xe;
  *(uint8_t*)0x20000082 = 0;
  *(uint8_t*)0x20000083 = 0;
  *(uint16_t*)0x20000084 = 0x10;
  *(uint16_t*)0x20000086 = 0;
  *(uint32_t*)0x20000088 = 0;
  *(uint32_t*)0x2000008c = 0;
  *(uint16_t*)0x20000090 = 3;
  *(uint16_t*)0x20000092 = 6;
  *(uint8_t*)0x20000094 = 0;
  *(uint8_t*)0x20000095 = 0;
  *(uint16_t*)0x20000096 = 0;
  *(uint16_t*)0x20000098 = 2;
  *(uint16_t*)0x2000009a = htobe16(0);
  *(uint32_t*)0x2000009c = htobe32(0x7f000001);
  *(uint8_t*)0x200000a0 = 0;
  *(uint8_t*)0x200000a1 = 0;
  *(uint8_t*)0x200000a2 = 0;
  *(uint8_t*)0x200000a3 = 0;
  *(uint8_t*)0x200000a4 = 0;
  *(uint8_t*)0x200000a5 = 0;
  *(uint8_t*)0x200000a6 = 0;
  *(uint8_t*)0x200000a7 = 0;
  *(uint16_t*)0x200000a8 = 3;
  *(uint16_t*)0x200000aa = 5;
  *(uint8_t*)0x200000ac = 0;
  *(uint8_t*)0x200000ad = 0;
  *(uint16_t*)0x200000ae = 0;
  *(uint16_t*)0x200000b0 = 2;
  *(uint16_t*)0x200000b2 = htobe16(0);
  *(uint32_t*)0x200000b4 = htobe32(0);
  *(uint8_t*)0x200000b8 = 0;
  *(uint8_t*)0x200000b9 = 0;
  *(uint8_t*)0x200000ba = 0;
  *(uint8_t*)0x200000bb = 0;
  *(uint8_t*)0x200000bc = 0;
  *(uint8_t*)0x200000bd = 0;
  *(uint8_t*)0x200000be = 0;
  *(uint8_t*)0x200000bf = 0;
  *(uint16_t*)0x200000c0 = 8;
  *(uint16_t*)0x200000c2 = 0x12;
  *(uint16_t*)0x200000c4 = 0;
  *(uint8_t*)0x200000c6 = 1;
  *(uint8_t*)0x200000c7 = 0;
  *(uint32_t*)0x200000c8 = 0;
  *(uint32_t*)0x200000cc = 0;
  *(uint16_t*)0x200000d0 = 6;
  *(uint16_t*)0x200000d2 = 0;
  *(uint8_t*)0x200000d4 = 0;
  *(uint8_t*)0x200000d5 = 0;
  *(uint16_t*)0x200000d6 = 0;
  *(uint32_t*)0x200000d8 = 0;
  *(uint32_t*)0x200000dc = 0;
  *(uint8_t*)0x200000e0 = -1;
  *(uint8_t*)0x200000e1 = 1;
  *(uint8_t*)0x200000e2 = 0;
  *(uint8_t*)0x200000e3 = 0;
  *(uint8_t*)0x200000e4 = 0;
  *(uint8_t*)0x200000e5 = 0;
  *(uint8_t*)0x200000e6 = 0;
  *(uint8_t*)0x200000e7 = 0;
  *(uint8_t*)0x200000e8 = 0;
  *(uint8_t*)0x200000e9 = 0;
  *(uint8_t*)0x200000ea = 0;
  *(uint8_t*)0x200000eb = 0;
  *(uint8_t*)0x200000ec = 0;
  *(uint8_t*)0x200000ed = 0;
  *(uint8_t*)0x200000ee = 0;
  *(uint8_t*)0x200000ef = 1;
  *(uint8_t*)0x200000f0 = 0;
  *(uint8_t*)0x200000f1 = 0;
  *(uint8_t*)0x200000f2 = 0;
  *(uint8_t*)0x200000f3 = 0;
  *(uint8_t*)0x200000f4 = 0;
  *(uint8_t*)0x200000f5 = 0;
  *(uint8_t*)0x200000f6 = 0;
  *(uint8_t*)0x200000f7 = 0;
  *(uint8_t*)0x200000f8 = 0;
  *(uint8_t*)0x200000f9 = 0;
  *(uint8_t*)0x200000fa = -1;
  *(uint8_t*)0x200000fb = -1;
  *(uint32_t*)0x200000fc = htobe32(0xe0000001);
  *(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, 0xa, 0x80002, 0x88);
  if (res != -1)
    r[1] = res;
  *(uint16_t*)0x20000040 = 0xa;
  *(uint16_t*)0x20000042 = htobe16(0x4e23);
  *(uint32_t*)0x20000044 = 0;
  *(uint8_t*)0x20000048 = 0;
  *(uint8_t*)0x20000049 = 0;
  *(uint8_t*)0x2000004a = 0;
  *(uint8_t*)0x2000004b = 0;
  *(uint8_t*)0x2000004c = 0;
  *(uint8_t*)0x2000004d = 0;
  *(uint8_t*)0x2000004e = 0;
  *(uint8_t*)0x2000004f = 0;
  *(uint8_t*)0x20000050 = 0;
  *(uint8_t*)0x20000051 = 0;
  *(uint8_t*)0x20000052 = 0;
  *(uint8_t*)0x20000053 = 0;
  *(uint8_t*)0x20000054 = 0;
  *(uint8_t*)0x20000055 = 0;
  *(uint8_t*)0x20000056 = 0;
  *(uint8_t*)0x20000057 = 0;
  *(uint32_t*)0x20000058 = 0;
  syscall(__NR_bind, r[1], 0x20000040, 0x1c);
  res = syscall(__NR_socket, 0xa, 0x8000000000000802, 0);
  if (res != -1)
    r[2] = res;
  syscall(__NR_dup2, r[1], r[2]);
  *(uint64_t*)0x20000000 = 0x205dafe4;
  *(uint16_t*)0x205dafe4 = 0xa;
  *(uint16_t*)0x205dafe6 = htobe16(0x4e23);
  *(uint32_t*)0x205dafe8 = 0;
  *(uint8_t*)0x205dafec = -1;
  *(uint8_t*)0x205dafed = 2;
  *(uint8_t*)0x205dafee = 0;
  *(uint8_t*)0x205dafef = 0;
  *(uint8_t*)0x205daff0 = 0;
  *(uint8_t*)0x205daff1 = 0;
  *(uint8_t*)0x205daff2 = 0;
  *(uint8_t*)0x205daff3 = 0;
  *(uint8_t*)0x205daff4 = 0;
  *(uint8_t*)0x205daff5 = 0;
  *(uint8_t*)0x205daff6 = 0;
  *(uint8_t*)0x205daff7 = 0;
  *(uint8_t*)0x205daff8 = 0;
  *(uint8_t*)0x205daff9 = 0;
  *(uint8_t*)0x205daffa = 0;
  *(uint8_t*)0x205daffb = 1;
  *(uint32_t*)0x205daffc = 0;
  *(uint32_t*)0x20000008 = 0x1c;
  *(uint64_t*)0x20000010 = 0x20fc8000;
  *(uint64_t*)0x20000018 = 0;
  *(uint64_t*)0x20000020 = 0;
  *(uint64_t*)0x20000028 = 0;
  *(uint32_t*)0x20000030 = 0;
  syscall(__NR_sendmsg, r[2], 0x20000000, 0x8000);
  *(uint64_t*)0x20000200 = 0;
  syscall(__NR_write, r[2], 0x20000200, 8);
}

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