Messages in this thread | | | Date | Fri, 16 May 2014 01:31:24 +0400 | From | Cyrill Gorcunov <> | Subject | Re: mm: NULL ptr deref handling mmaping of special mappings |
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On Fri, May 16, 2014 at 12:19:14AM +0400, Cyrill Gorcunov wrote: > > I see what you mean. We're rather targeting on bare x86-64 at the moment > but compat mode is needed as well (not yet implemented though). I'll take > a precise look into this area. Thanks!
Indeed, because we were not running 32bit tasks vdso32-setup.c::arch_setup_additional_pages has never been called. That's the mode we will have to implement one day.
Looking forward the question appear -- will VDSO_PREV_PAGES and rest of variables be kind of immutable constants? If yes, we could calculate where the additional vma lives without requiring any kind of [vdso] mark in proc/pid/maps output.
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