Messages in this thread | | | Date | Fri, 11 Mar 2016 09:53:01 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH] x86: Enable full randomization on i386 and X86_32. |
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* 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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