// https://syzkaller.appspot.com/bug?id=603252f12de84a24d7822410c9aae68945cc4837
// 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;                                                  \
  }

void loop()
{
  *(uint32_t*)0x20000000 = 0x8eb;
  *(uint32_t*)0x20000004 = 0;
  *(uint32_t*)0x20000008 = 0;
  STORE_BY_BITMASK(uint32_t, 0x2000000c, 0, 0, 1);
  STORE_BY_BITMASK(uint32_t, 0x2000000c, 0, 1, 2);
  STORE_BY_BITMASK(uint32_t, 0x2000000c, 0, 3, 1);
  STORE_BY_BITMASK(uint32_t, 0x2000000c, 0, 4, 1);
  STORE_BY_BITMASK(uint32_t, 0x2000000c, 0, 5, 1);
  STORE_BY_BITMASK(uint32_t, 0x2000000c, 0, 6, 1);
  STORE_BY_BITMASK(uint32_t, 0x2000000c, 0, 7, 1);
  syscall(__NR_modify_ldt, 1, 0x20000000, 0x10);
  syscall(__NR_modify_ldt, 0, 0x20000140, 0x1000001a6);
}

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