[LTP] [PATCH v2 2/2] Add test for CVE 2017-1000405

[Li Wang]

Martin Doucha <mdoucha@suse.cz> wrote:

...
> +static void *alloc_zero_page(void *baseaddr)
> +{
> +       int i;
> +       void *ret;
> +
> +       /* Find aligned chunk of address space. MAP_HUGETLB doesn't work.
> */
> +       for (i = 0; i < 16; i++, baseaddr += thp_size) {
> +               ret = mmap(baseaddr, thp_size, PROT_READ,
> +                       MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
>

I'm wondering why here request the READ ONLY memory, shouldn't we write
something into the write_thp loopingly then?

-- 
Regards,
Li Wang
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