On Mon, May 4, 2015 at 11:50 PM, PaX Team <pageexec@xxxxxxxxxxx> wrote:
> On 4 May 2015 at 23:16, Anisse Astier wrote:
>
>> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
>> index c29e3a0..ba8aa25 100644
>> --- a/mm/page_alloc.c
>> +++ b/mm/page_alloc.c
>> @@ -975,6 +975,31 @@ static int prep_new_page(struct page *page, unsigned int order, gfp_t gfp_flags,
>> for (i = 0; i < (1 << order); i++)
>> clear_highpage(page + i);
>> #endif
>> +#ifdef CONFIG_SANITIZE_FREED_PAGES_DEBUG
>> + for (i = 0; i < (1 << order); i++) {
>> + struct page *p = page + i;
>> + int j;
>> + bool err = false;
>> + void *kaddr = kmap_atomic(p);
>> +
>> + for (j = 0; j < PAGE_SIZE; j++) {
>
> did you mean to use memchr_inv(kaddr, 0, PAGE_SIZE) instead? ;)
Will be fixed in v3, although as I said I'm not sure if this debug
code should go in or not.
Thanks for you time.
Anisse
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>