Comment 3 for bug 1847189

I've verified the kernel in xenial-proposed:

tyhicks@sec-xenial-amd64:~$ cat /proc/version_signature
Ubuntu 4.4.0-167.196-generic 4.4.197
tyhicks@sec-xenial-amd64:~$ cat test.c
#include <stdio.h>
#include <time.h>

int main(void)
{
        int rc = clock_gettime(10, 0);

        if (rc < 0)
                perror("clock_gettime");

        return rc;
}
tyhicks@sec-xenial-amd64:~$ gcc -o test test.c
tyhicks@sec-xenial-amd64:~$ ./test
clock_gettime: Invalid argument

There's no NULL pointer deref or any other sort of error induced by the test case in the kernel log.