// https://syzkaller.appspot.com/bug?id=69aa91faa159a435b46d162e23268acd07fc8fb3
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <pwd.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/syscall.h>
#include <unistd.h>

#define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off))
#define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len)               \
  *(type*)(addr) =                                                             \
      htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) |           \
            (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len))))

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 = 0;
  for (; i < length - 1; i += 2)
    csum->acc += *(uint16_t*)&data[i];
  if (length & 1)
    csum->acc += le16toh((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;
}

#define __syscall syscall

uint64_t r[1] = {0xffffffffffffffff};

int main(void)
{
  syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul);
  intptr_t res = 0;
  memcpy((void*)0x20000000, "\x89\x00\x3e\xde\x9f\x7d", 6);
  memcpy((void*)0x20000006, "\xbb\xb8\xec\x55\xb5\x6f", 6);
  *(uint16_t*)0x2000000c = htobe16(0x86dd);
  STORE_BY_BITMASK(uint8_t, , 0x2000000e, 0, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000e, 6, 4, 4);
  memcpy((void*)0x2000000f, "1yq", 3);
  *(uint16_t*)0x20000012 = htobe16(8);
  *(uint8_t*)0x20000014 = 0;
  *(uint8_t*)0x20000015 = 0;
  *(uint8_t*)0x20000016 = 0;
  *(uint8_t*)0x20000017 = 0;
  *(uint8_t*)0x20000018 = 0;
  *(uint8_t*)0x20000019 = 0;
  *(uint8_t*)0x2000001a = 0;
  *(uint8_t*)0x2000001b = 0;
  *(uint8_t*)0x2000001c = 0;
  *(uint8_t*)0x2000001d = 0;
  *(uint8_t*)0x2000001e = 0;
  *(uint8_t*)0x2000001f = 0;
  *(uint8_t*)0x20000020 = 0;
  *(uint8_t*)0x20000021 = 0;
  *(uint8_t*)0x20000022 = 0;
  *(uint8_t*)0x20000023 = 0;
  *(uint8_t*)0x20000024 = 0;
  *(uint8_t*)0x20000025 = 0;
  *(uint8_t*)0x20000026 = -1;
  *(uint8_t*)0x20000027 = 2;
  *(uint8_t*)0x20000028 = 0;
  *(uint8_t*)0x20000029 = 0;
  *(uint8_t*)0x2000002a = 0;
  *(uint8_t*)0x2000002b = 0;
  *(uint8_t*)0x2000002c = 0;
  *(uint8_t*)0x2000002d = 0;
  *(uint8_t*)0x2000002e = 0;
  *(uint8_t*)0x2000002f = 0;
  *(uint8_t*)0x20000030 = 0;
  *(uint8_t*)0x20000031 = 0;
  *(uint8_t*)0x20000032 = 0;
  *(uint8_t*)0x20000033 = 0;
  *(uint8_t*)0x20000034 = 0;
  *(uint8_t*)0x20000035 = 1;
  *(uint8_t*)0x20000036 = 0x80;
  *(uint8_t*)0x20000037 = 0;
  *(uint16_t*)0x20000038 = htobe16(0);
  *(uint16_t*)0x2000003a = htobe16(0);
  *(uint16_t*)0x2000003c = htobe16(0);
  struct csum_inet csum_1;
  csum_inet_init(&csum_1);
  csum_inet_update(&csum_1, (const uint8_t*)0x20000016, 16);
  csum_inet_update(&csum_1, (const uint8_t*)0x20000026, 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 = 0x3a000000;
  csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_3, 4);
  csum_inet_update(&csum_1, (const uint8_t*)0x20000036, 8);
  *(uint16_t*)0x20000038 = csum_inet_digest(&csum_1);
  memcpy((void*)0x20000200, "/dev/pf\000", 8);
  res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000200ul, 0ul, 0ul);
  if (res != -1)
    r[0] = res;
  *(uint32_t*)0x20000000 = 0;
  syscall(SYS_ioctl, r[0], 0xc0104419ul, 0x20000000ul);
  return 0;
}