hwpoison

main.c

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/mman.h>

const int SIZE = 4096;

int main(void) {
  int *addr = malloc(sizeof(int)*SIZE);
  posix_memalign(&addr, 4096, sizeof(int)*SIZE);
  for (int i = 0; i < SIZE; i++) {
    addr[i] = i;
  }
  int err = madvise(addr, sizeof(int)*SIZE, MADV_HWPOISON);
  printf("err = %d\n", err);
  if (err != 0) {
    perror(NULL);
  }
  int sum = 0;
  for (int i = 0; i < SIZE; i++) {
    sum += addr[i];
  }
  printf("sum = %d\n", sum);
  free(addr);
  return 0;
}