reproducer.c

#include <stdlib.h>
#include <unistd.h>
#include <sys/io.h>
#include <stdio.h>
#include <limits.h>

int main(int argc, char **argv)
{
    FILE *fh = fopen("testnum", "w");
    int start = argc > 1 ? atoi(argv[1]) : 0;
    int stop = argc > 2 ? atoi(argv[2]) : INT_MAX;
    int iter;

    iopl(3);
    for (iter = start; iter < stop; iter++) {
        int i;

        fprintf(fh, "%d\n", iter);
        fprintf(stderr, "%d\n", iter);
        fflush(fh);
        fdatasync(fileno(fh));

        srand(iter);
        for (i=0; i< 100000; i++) {
            int a, b;
            a = rand()%0x100;
            b = 0x3c0 + (rand()%0x20);
            outb(a,b);

        }

    }
    return 0;

}