Messages in this thread |  | | Date | Wed, 3 Oct 2018 23:21:44 +0200 | From | Eugene Syromiatnikov <> | Subject | Re: [RFC PATCH v4 24/27] mm/mmap: Create a guard area between VMAs |
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On Wed, Oct 03, 2018 at 06:52:40PM +0200, Jann Horn wrote: > On Wed, Oct 3, 2018 at 6:32 PM Eugene Syromiatnikov <esyr@redhat.com> wrote: > > I'm not sure, however, whether such a change that provides no ability > > to configure or affect it will go well with all the supported > > architectures. > > Is there a concrete reason why you think an architecture might not > like this? As far as I can tell, the virtual address space overhead > should be insignificant even for 32-bit systems.
Not really, and not architectures per se, but judging by some past experiences with enabling ASLR, I would expect that all kinds of weird applications may start to behave in all kinds of strange ways.
Not that I have anything more than this doubt, however; but this sort of change without any ability to tune or revert it still looks unusual to me.
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