// https://syzkaller.appspot.com/bug?id=4462682cd32aee8ff03a43c8b9be3963743bc506
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <endian.h>
#include <fcntl.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <string.h>
#include <sys/stat.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;
}

static uintptr_t syz_open_dev(uintptr_t a0, uintptr_t a1, uintptr_t a2)
{
  if (a0 == 0xc || a0 == 0xb) {
    char buf[128];
    sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1,
            (uint8_t)a2);
    return open(buf, O_RDWR, 0);
  } else {
    char buf[1024];
    char* hash;
    strncpy(buf, (char*)a0, sizeof(buf));
    buf[sizeof(buf) - 1] = 0;
    while ((hash = strchr(buf, '#'))) {
      *hash = '0' + (char)(a1 % 10);
      a1 /= 10;
    }
    return open(buf, a2, 0);
  }
}

#ifndef __NR_mmap
#define __NR_mmap 192
#endif
#ifndef __NR_write
#define __NR_write 4
#endif
#ifndef __NR_readv
#define __NR_readv 145
#endif
#undef __NR_mmap
#define __NR_mmap __NR_mmap2

long r[1];
void loop()
{
  memset(r, -1, sizeof(r));
  syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0);
  memcpy((void*)0x2002a000, "/dev/sg#", 9);
  r[0] = syz_open_dev(0x2002a000, 0, 0x142);
  *(uint8_t*)0x205c3000 = 0;
  *(uint8_t*)0x205c3001 = 0x84;
  *(uint16_t*)0x205c3002 = 1;
  *(uint16_t*)0x205c3004 = 0;
  *(uint16_t*)0x205c3006 = 5;
  *(uint16_t*)0x205c3008 = 1;
  STORE_BY_BITMASK(uint8_t, 0x205c300a, 0, 0, 4);
  STORE_BY_BITMASK(uint8_t, 0x205c300a, 6, 4, 4);
  memcpy((void*)0x205c300b, "\xde\x57\x29", 3);
  *(uint16_t*)0x205c300e = htobe16(0x58);
  *(uint8_t*)0x205c3010 = 0x7f;
  *(uint8_t*)0x205c3011 = 0;
  *(uint8_t*)0x205c3012 = 0xfe;
  *(uint8_t*)0x205c3013 = 0x80;
  *(uint8_t*)0x205c3014 = 0;
  *(uint8_t*)0x205c3015 = 0;
  *(uint8_t*)0x205c3016 = 0;
  *(uint8_t*)0x205c3017 = 0;
  *(uint8_t*)0x205c3018 = 0;
  *(uint8_t*)0x205c3019 = 0;
  *(uint8_t*)0x205c301a = 0;
  *(uint8_t*)0x205c301b = 0;
  *(uint8_t*)0x205c301c = 0;
  *(uint8_t*)0x205c301d = 0;
  *(uint8_t*)0x205c301e = 0;
  *(uint8_t*)0x205c301f = 0;
  *(uint8_t*)0x205c3020 = 0;
  *(uint8_t*)0x205c3021 = 0xaa;
  *(uint8_t*)0x205c3022 = 0xfe;
  *(uint8_t*)0x205c3023 = 0x80;
  *(uint8_t*)0x205c3024 = 0;
  *(uint8_t*)0x205c3025 = 0;
  *(uint8_t*)0x205c3026 = 0;
  *(uint8_t*)0x205c3027 = 0;
  *(uint8_t*)0x205c3028 = 0;
  *(uint8_t*)0x205c3029 = 0;
  *(uint8_t*)0x205c302a = 0;
  *(uint8_t*)0x205c302b = 0;
  *(uint8_t*)0x205c302c = 0;
  *(uint8_t*)0x205c302d = 0;
  *(uint8_t*)0x205c302e = 0;
  *(uint8_t*)0x205c302f = 0;
  *(uint8_t*)0x205c3030 = 0;
  *(uint8_t*)0x205c3031 = 0xaa;
  *(uint16_t*)0x205c3032 = htobe16(0x4e20);
  *(uint16_t*)0x205c3034 = htobe16(0x4e20);
  *(uint32_t*)0x205c3036 = 0x42424242;
  *(uint32_t*)0x205c303a = 0x42424242;
  STORE_BY_BITMASK(uint8_t, 0x205c303e, 0, 0, 1);
  STORE_BY_BITMASK(uint8_t, 0x205c303e, 0, 1, 3);
  STORE_BY_BITMASK(uint8_t, 0x205c303e, 0x16, 4, 4);
  *(uint8_t*)0x205c303f = 0;
  *(uint16_t*)0x205c3040 = htobe16(7);
  *(uint16_t*)0x205c3042 = 0;
  *(uint16_t*)0x205c3044 = htobe16(0);
  *(uint8_t*)0x205c3046 = 5;
  *(uint8_t*)0x205c3047 = 6;
  *(uint32_t*)0x205c3048 = htobe32(0);
  *(uint8_t*)0x205c304c = 5;
  *(uint8_t*)0x205c304d = 0x22;
  *(uint32_t*)0x205c304e = htobe32(0);
  *(uint32_t*)0x205c3052 = htobe32(0);
  *(uint32_t*)0x205c3056 = htobe32(1);
  *(uint32_t*)0x205c305a = htobe32(0);
  *(uint32_t*)0x205c305e = htobe32(0);
  *(uint32_t*)0x205c3062 = htobe32(0);
  *(uint32_t*)0x205c3066 = htobe32(0);
  *(uint32_t*)0x205c306a = htobe32(1);
  *(uint8_t*)0x205c306e = 2;
  *(uint8_t*)0x205c306f = 4;
  *(uint16_t*)0x205c3070 = 0xac1;
  *(uint8_t*)0x205c3072 = 0xfe;
  *(uint8_t*)0x205c3073 = 2;
  *(uint8_t*)0x205c3074 = 0;
  *(uint8_t*)0x205c3075 = 0x13;
  *(uint8_t*)0x205c3076 = 0x12;
  memcpy((void*)0x205c3077,
         "\x40\x08\x07\xe3\xee\xe9\xb1\x73\xb4\x08\x11\x5e\xf4\x5c\x5e\x18",
         16);
  *(uint8_t*)0x205c3087 = 3;
  *(uint8_t*)0x205c3088 = 3;
  *(uint8_t*)0x205c3089 = 6;
  struct csum_inet csum_1;
  csum_inet_init(&csum_1);
  csum_inet_update(&csum_1, (const uint8_t*)0x205c3012, 16);
  csum_inet_update(&csum_1, (const uint8_t*)0x205c3022, 16);
  uint32_t csum_1_chunk_2 = 0x58000000;
  csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_2, 4);
  uint32_t csum_1_chunk_3 = 0x6000000;
  csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_3, 4);
  csum_inet_update(&csum_1, (const uint8_t*)0x205c3032, 88);
  *(uint16_t*)0x205c3042 = csum_inet_digest(&csum_1);
  syscall(__NR_write, r[0], 0x205c3000, 0x8a);
  *(uint32_t*)0x20764000 = 0x20ce2000;
  *(uint32_t*)0x20764004 = 0x4f;
  syscall(__NR_readv, r[0], 0x20764000, 1);
}

int main()
{
  loop();
  return 0;
}