Messages in this thread | | | From | Anisse Astier <> | Date | Mon, 27 Apr 2015 23:27:31 +0200 | Subject | Re: [PATCH 2/2] mm/page_alloc.c: add config option to sanitize freed pages |
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On Mon, Apr 27, 2015 at 11:25 AM, PaX Team <pageexec@freemail.hu> wrote: > > the PaX SANITIZE feature does exactly this in mm/page_alloc.c:prep_new_page: > > #ifndef CONFIG_PAX_MEMORY_SANITIZE > if (gfp_flags & __GFP_ZERO) > prep_zero_page(page, order, gfp_flags); > #endif >
Thanks, I'll do that in the next iteration.
>> you'd need to clear memory on boot for example. > > it happens automagically because on boot during the transition from the > boot allocator to the buddy one each page gets freed which will then go > through the page clearing path.
Interesting, I'll see how it works.
> > however there's a known problem/conflict with HIBERNATION (see > http://marc.info/?l=linux-pm&m=132871433416256&w=2) which i think would > have to be resolved before upstream acceptance.
I don't use hibernation, but I'll see if I can create a swap partition to test that.
Regards,
Anisse
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