// 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 = 0;
  res = syscall(__NR_socket, 0x10, 3, 6);
  if (res != -1)
    r[0] = res;
  *(uint64_t*)0x20007000 = 0x20001000;
  *(uint16_t*)0x20001000 = 0x10;
  *(uint16_t*)0x20001002 = 0;
  *(uint32_t*)0x20001004 = 0;
  *(uint32_t*)0x20001008 = 0;
  *(uint32_t*)0x20007008 = 0xc;
  *(uint64_t*)0x20007010 = 0x20000040;
  *(uint64_t*)0x20000040 = 0x20000340;
  *(uint32_t*)0x20000340 = 0xb8;
  *(uint16_t*)0x20000344 = 0x19;
  *(uint16_t*)0x20000346 = 0x709;
  *(uint32_t*)0x20000348 = 0;
  *(uint32_t*)0x2000034c = 0;
  *(uint32_t*)0x20000350 = htobe32(0);
  *(uint8_t*)0x20000360 = 0xfe;
  *(uint8_t*)0x20000361 = 0x80;
  *(uint8_t*)0x20000362 = 0;
  *(uint8_t*)0x20000363 = 0;
  *(uint8_t*)0x20000364 = 0;
  *(uint8_t*)0x20000365 = 0;
  *(uint8_t*)0x20000366 = 0;
  *(uint8_t*)0x20000367 = 0;
  *(uint8_t*)0x20000368 = 0;
  *(uint8_t*)0x20000369 = 0;
  *(uint8_t*)0x2000036a = 0;
  *(uint8_t*)0x2000036b = 0;
  *(uint8_t*)0x2000036c = 0;
  *(uint8_t*)0x2000036d = 0;
  *(uint8_t*)0x2000036e = 0;
  *(uint8_t*)0x2000036f = 0xbb;
  *(uint16_t*)0x20000370 = htobe16(0);
  *(uint16_t*)0x20000372 = htobe16(0);
  *(uint16_t*)0x20000374 = htobe16(0);
  *(uint16_t*)0x20000376 = htobe16(0);
  *(uint16_t*)0x20000378 = 2;
  *(uint8_t*)0x2000037a = 0x80;
  *(uint8_t*)0x2000037b = 0x20;
  *(uint8_t*)0x2000037c = 0;
  *(uint32_t*)0x20000380 = 0;
  *(uint32_t*)0x20000384 = 0;
  *(uint64_t*)0x20000388 = 0;
  *(uint64_t*)0x20000390 = 0;
  *(uint64_t*)0x20000398 = 0;
  *(uint64_t*)0x200003a0 = 0;
  *(uint64_t*)0x200003a8 = 0;
  *(uint64_t*)0x200003b0 = 0;
  *(uint64_t*)0x200003b8 = 0;
  *(uint64_t*)0x200003c0 = 0;
  *(uint64_t*)0x200003c8 = 0;
  *(uint64_t*)0x200003d0 = 0;
  *(uint64_t*)0x200003d8 = 0;
  *(uint64_t*)0x200003e0 = 0;
  *(uint32_t*)0x200003e8 = 0;
  *(uint32_t*)0x200003ec = 0;
  *(uint8_t*)0x200003f0 = 0;
  *(uint8_t*)0x200003f1 = 0;
  *(uint8_t*)0x200003f2 = 0;
  *(uint8_t*)0x200003f3 = 0;
  *(uint64_t*)0x20000048 = 0xb8;
  *(uint64_t*)0x20007018 = 1;
  *(uint64_t*)0x20007020 = 0;
  *(uint64_t*)0x20007028 = 0;
  *(uint32_t*)0x20007030 = 0;
  syscall(__NR_sendmsg, r[0], 0x20007000, 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*)0x20000080 = 2;
  *(uint16_t*)0x20000082 = htobe16(0x4e20);
  *(uint32_t*)0x20000084 = htobe32(0);
  *(uint8_t*)0x20000088 = 0;
  *(uint8_t*)0x20000089 = 0;
  *(uint8_t*)0x2000008a = 0;
  *(uint8_t*)0x2000008b = 0;
  *(uint8_t*)0x2000008c = 0;
  *(uint8_t*)0x2000008d = 0;
  *(uint8_t*)0x2000008e = 0;
  *(uint8_t*)0x2000008f = 0;
  syscall(__NR_sendto, r[1], 0x20000040, 0, 0x10000008084, 0x20000080, 0x10);
  syscall(__NR_sendto, r[1], 0x20000000, 0, 0, 0, 0);
  *(uint8_t*)0x20000000 = 1;
  *(uint8_t*)0x20000001 = 0x80;
  *(uint8_t*)0x20000002 = 0xc2;
  *(uint8_t*)0x20000003 = 0;
  *(uint8_t*)0x20000004 = 0;
  *(uint8_t*)0x20000005 = 0;
  *(uint8_t*)0x20000006 = 0;
  *(uint8_t*)0x20000007 = 0;
  *(uint8_t*)0x20000008 = 0;
  *(uint8_t*)0x20000009 = 0;
  *(uint8_t*)0x2000000a = 0;
  *(uint8_t*)0x2000000b = 0;
  *(uint16_t*)0x2000000c = htobe16(0x800);
  STORE_BY_BITMASK(uint8_t, 0x2000000e, 5, 0, 4);
  STORE_BY_BITMASK(uint8_t, 0x2000000e, 4, 4, 4);
  STORE_BY_BITMASK(uint8_t, 0x2000000f, 0, 0, 2);
  STORE_BY_BITMASK(uint8_t, 0x2000000f, 0, 2, 6);
  *(uint16_t*)0x20000010 = htobe16(0x1c);
  *(uint16_t*)0x20000012 = htobe16(0);
  *(uint16_t*)0x20000014 = htobe16(0);
  *(uint8_t*)0x20000016 = 0;
  *(uint8_t*)0x20000017 = 2;
  *(uint16_t*)0x20000018 = 0;
  *(uint32_t*)0x2000001a = htobe32(0);
  *(uint32_t*)0x2000001e = htobe32(-1);
  *(uint8_t*)0x20000022 = 0x11;
  *(uint8_t*)0x20000023 = 0;
  *(uint16_t*)0x20000024 = 0;
  *(uint32_t*)0x20000026 = htobe32(0xe0000001);
  *(uint32_t*)0x200001c0 = 0;
  *(uint32_t*)0x200001c4 = 0;
  *(uint32_t*)0x200001c8 = 0;
  *(uint32_t*)0x200001cc = 0;
  *(uint32_t*)0x200001d0 = 0;
  *(uint32_t*)0x200001d4 = 0;
  struct csum_inet csum_1;
  csum_inet_init(&csum_1);
  csum_inet_update(&csum_1, (const uint8_t*)0x20000022, 8);
  *(uint16_t*)0x20000024 = csum_inet_digest(&csum_1);
  struct csum_inet csum_2;
  csum_inet_init(&csum_2);
  csum_inet_update(&csum_2, (const uint8_t*)0x2000000e, 20);
  *(uint16_t*)0x20000018 = csum_inet_digest(&csum_2);
}

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