// 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;
  *(uint8_t*)0x20002000 = 1;
  *(uint8_t*)0x20002001 = 0x80;
  *(uint8_t*)0x20002002 = 0xc2;
  *(uint8_t*)0x20002003 = 0;
  *(uint8_t*)0x20002004 = 0;
  *(uint8_t*)0x20002005 = 0;
  memcpy((void*)0x20002006, "\xb4\x2d\x87\x40\x2e\x52", 6);
  *(uint16_t*)0x2000200c = htobe16(0x86dd);
  STORE_BY_BITMASK(uint8_t, 0x2000200e, 0, 0, 4);
  STORE_BY_BITMASK(uint8_t, 0x2000200e, 6, 4, 4);
  memcpy((void*)0x2000200f, "\x06\xf5\x26", 3);
  *(uint16_t*)0x20002012 = htobe16(0x30);
  *(uint8_t*)0x20002014 = 0x3a;
  *(uint8_t*)0x20002015 = 0;
  *(uint8_t*)0x20002016 = 0xfe;
  *(uint8_t*)0x20002017 = 0x80;
  *(uint8_t*)0x20002018 = 0;
  *(uint8_t*)0x20002019 = 0;
  *(uint8_t*)0x2000201a = 0;
  *(uint8_t*)0x2000201b = 0;
  *(uint8_t*)0x2000201c = 0;
  *(uint8_t*)0x2000201d = 0;
  *(uint8_t*)0x2000201e = 0;
  *(uint8_t*)0x2000201f = 0;
  *(uint8_t*)0x20002020 = 0;
  *(uint8_t*)0x20002021 = 0;
  *(uint8_t*)0x20002022 = 0;
  *(uint8_t*)0x20002023 = 0;
  *(uint8_t*)0x20002024 = 0;
  *(uint8_t*)0x20002025 = -1;
  *(uint8_t*)0x20002026 = -1;
  *(uint8_t*)0x20002027 = 2;
  *(uint8_t*)0x20002028 = 0;
  *(uint8_t*)0x20002029 = 0;
  *(uint8_t*)0x2000202a = 0;
  *(uint8_t*)0x2000202b = 0;
  *(uint8_t*)0x2000202c = 0;
  *(uint8_t*)0x2000202d = 0;
  *(uint8_t*)0x2000202e = 0;
  *(uint8_t*)0x2000202f = 0;
  *(uint8_t*)0x20002030 = 0;
  *(uint8_t*)0x20002031 = 0;
  *(uint8_t*)0x20002032 = 0;
  *(uint8_t*)0x20002033 = 0;
  *(uint8_t*)0x20002034 = 0;
  *(uint8_t*)0x20002035 = 1;
  *(uint8_t*)0x20002036 = 4;
  *(uint8_t*)0x20002037 = 0;
  *(uint16_t*)0x20002038 = 0;
  *(uint32_t*)0x2000203a = htobe32(0);
  STORE_BY_BITMASK(uint8_t, 0x2000203e, 0, 0, 4);
  STORE_BY_BITMASK(uint8_t, 0x2000203e, 6, 4, 4);
  memcpy((void*)0x2000203f, "\x0a\x07\xec", 3);
  *(uint16_t*)0x20002042 = htobe16(0);
  *(uint8_t*)0x20002044 = 0x29;
  *(uint8_t*)0x20002045 = 0;
  *(uint8_t*)0x20002046 = 0xfe;
  *(uint8_t*)0x20002047 = 0x80;
  *(uint8_t*)0x20002048 = 0;
  *(uint8_t*)0x20002049 = 0;
  *(uint8_t*)0x2000204a = 0;
  *(uint8_t*)0x2000204b = 0;
  *(uint8_t*)0x2000204c = 0;
  *(uint8_t*)0x2000204d = 0;
  *(uint8_t*)0x2000204e = 0;
  *(uint8_t*)0x2000204f = 0;
  *(uint8_t*)0x20002050 = 0;
  *(uint8_t*)0x20002051 = 0;
  *(uint8_t*)0x20002052 = 0;
  *(uint8_t*)0x20002053 = 0;
  *(uint8_t*)0x20002054 = 0;
  *(uint8_t*)0x20002055 = -1;
  *(uint8_t*)0x20002056 = 0;
  *(uint8_t*)0x20002057 = 0;
  *(uint8_t*)0x20002058 = 0;
  *(uint8_t*)0x20002059 = 0;
  *(uint8_t*)0x2000205a = 0;
  *(uint8_t*)0x2000205b = 0;
  *(uint8_t*)0x2000205c = 0;
  *(uint8_t*)0x2000205d = 0;
  *(uint8_t*)0x2000205e = 0;
  *(uint8_t*)0x2000205f = 2;
  *(uint8_t*)0x20002060 = -1;
  *(uint8_t*)0x20002061 = -1;
  *(uint8_t*)0x20002062 = 0xac;
  *(uint8_t*)0x20002063 = 0x14;
  *(uint8_t*)0x20002064 = 0;
  *(uint8_t*)0x20002065 = 0;
  *(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*)0x20002016, 16);
  csum_inet_update(&csum_1, (const uint8_t*)0x20002026, 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*)0x20002036, 48);
  *(uint16_t*)0x20002038 = csum_inet_digest(&csum_1);
  res = syscall(__NR_socket, 0xa, 2, 0);
  if (res != -1)
    r[0] = res;
  *(uint16_t*)0x2000cfe4 = 0xa;
  *(uint16_t*)0x2000cfe6 = htobe16(0x4e20);
  *(uint32_t*)0x2000cfe8 = 0;
  *(uint8_t*)0x2000cfec = 0;
  *(uint8_t*)0x2000cfed = 0;
  *(uint8_t*)0x2000cfee = 0;
  *(uint8_t*)0x2000cfef = 0;
  *(uint8_t*)0x2000cff0 = 0;
  *(uint8_t*)0x2000cff1 = 0;
  *(uint8_t*)0x2000cff2 = 0;
  *(uint8_t*)0x2000cff3 = 0;
  *(uint8_t*)0x2000cff4 = 0;
  *(uint8_t*)0x2000cff5 = 0;
  *(uint8_t*)0x2000cff6 = 0;
  *(uint8_t*)0x2000cff7 = 0;
  *(uint8_t*)0x2000cff8 = 0;
  *(uint8_t*)0x2000cff9 = 0;
  *(uint8_t*)0x2000cffa = 0;
  *(uint8_t*)0x2000cffb = 0;
  *(uint32_t*)0x2000cffc = 0;
  syscall(__NR_connect, r[0], 0x2000cfe4, 0x1c);
  *(uint64_t*)0x20000080 = 0;
  *(uint32_t*)0x20000088 = 0;
  *(uint64_t*)0x20000090 = 0x20000040;
  *(uint64_t*)0x20000040 = 0x20001000;
  *(uint64_t*)0x20000048 = 0;
  *(uint64_t*)0x20000098 = 1;
  *(uint64_t*)0x200000a0 = 0x20002000;
  *(uint64_t*)0x200000a8 = 0;
  *(uint32_t*)0x200000b0 = 0;
  syscall(__NR_sendmsg, r[0], 0x20000080, 0x8000);
  *(uint64_t*)0x20000440 = 0;
  *(uint32_t*)0x20000448 = 0;
  *(uint64_t*)0x20000450 = 0x20002ff0;
  *(uint64_t*)0x20002ff0 = 0x20000040;
  memcpy((void*)0x20000040, "\xbc\xe5", 2);
  *(uint64_t*)0x20002ff8 = 2;
  *(uint64_t*)0x20000458 = 1;
  *(uint64_t*)0x20000460 = 0x2000ae80;
  *(uint64_t*)0x20000468 = 0;
  *(uint32_t*)0x20000470 = 0;
  syscall(__NR_sendmsg, r[0], 0x20000440, 0);
}

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