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    SubjectRe: [PATCH] x86: Enable full randomization on i386 and X86_32.

    * Kees Cook <keescook@chromium.org> wrote:

    > On Thu, Mar 10, 2016 at 12:53 PM, Arjan van de Ven
    > <arjan@linux.intel.com> wrote:
    > >> Arjan, or other folks, can you remember why x86_32 disabled mmap
    > >> randomization here? There doesn't seem to be a good reason for it that
    > >> I see.
    > >
    > >
    > > for unlimited stack it got really messy with threaded apps.
    >
    > Seems like it'd only cause problems for really really giant processes?
    > (I think it's telling that the other 32-bit archs don't disable ASLR
    > in this case...)

    IIRC there was some sort of specific breakage with unlimited stack apps - I don't
    remember the exact details.

    > > anyway, I don't mind seeing if this will indeed work, with time running out
    > > where 32 bit is going extinct... in a few years we just won't have enough
    > > testing on this kind of change anymore.
    >
    > Sounds good. Ingo, can you pull this in and we can try it for -next?

    Ok, we can certainly try. If there's breakage with old distros then we might need
    to put this behind a legacy Kconfig switch.

    Thanks,

    Ingo

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