Messages in this thread | | | Date | Mon, 4 Nov 2013 13:09:51 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH] x86, mm: get ASLR work for hugetlb mappings |
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On Mon, 4 Nov 2013 12:41:52 +0200 (EET) "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> wrote:
> Kirill A. Shutemov wrote: > > Matthew noticed that hugetlb doesn't participate in ASLR on x86-64. > > The reason is genereic hugetlb_get_unmapped_area() which is used on > > x86-64. It doesn't support randomization and use bottom-up unmapped area > > lookup, instead of usual top-down on x86-64. > > > > x86 has arch-specific hugetlb_get_unmapped_area(), but it's used only on > > x86-32. > > > > Let's use arch-specific hugetlb_get_unmapped_area() on x86-64 too. > > It fixes the issue and make hugetlb use top-down unmapped area lookup. > > > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> > > Cc: Matthew Wilcox <willy@linux.intel.com> > > Andrew, any comments?
whome? I'm convinced, but it's an x86 patch. I tossed it in there so it gets a bit of linux-next exposure.
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