Re: [PATCH] ARM: vdso: Mark vDSO code as read-only

From	"PaX Team" <pageexec@freemail.hu>
Newsgroups	linux.kernel
Subject	Re: [PATCH] ARM: vdso: Mark vDSO code as read-only
Date	2016-02-18 11:50 +0100
Message-ID	<r3ujM-4dh-17@gated-at.bofh.it> (permalink)
References	<r3ujM-4dh-19@gated-at.bofh.it> <r3ujM-4dh-21@gated-at.bofh.it> <r3k14-5dZ-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 17 Feb 2016 at 15:48, Kees Cook wrote:

> On Wed, Feb 17, 2016 at 3:43 PM, David Brown <david.brown@linaro.org> wrote:

> > Is there a possible future consideration to perhaps make .rodata read
> > only much earlier?
> 
> Yeah, this will likely be a future improvement. Some architectures
> already mark .rodata before the mark_rodata_ro() call. Once we start
> to have more use of postinit-readonly, I suspect we'll see more
> clarification of when those things happen.

FYI, PaX had enforced early rodata on i386 during the 2.4 series (i.e.,
decade+ ago) but i abandoned it for 2.6 due to the maintenance burden
coupled with its low benefit...

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[PATCH] ARM: vdso: Mark vDSO code as read-only David Brown <david.brown@linaro.org> - 2016-02-16 22:40 +0100
  Re: [PATCH] ARM: vdso: Mark vDSO code as read-only Kees Cook <keescook@chromium.org> - 2016-02-16 23:00 +0100
    Re: [PATCH] ARM: vdso: Mark vDSO code as read-only David Brown <david.brown@linaro.org> - 2016-02-17 06:30 +0100
      Re: [PATCH] ARM: vdso: Mark vDSO code as read-only Kees Cook <keescook@chromium.org> - 2016-02-18 00:10 +0100
        Re: [PATCH] ARM: vdso: Mark vDSO code as read-only David Brown <david.brown@linaro.org> - 2016-02-18 00:50 +0100
          Re: [PATCH] ARM: vdso: Mark vDSO code as read-only Kees Cook <keescook@chromium.org> - 2016-02-18 00:50 +0100
            Re: [PATCH] ARM: vdso: Mark vDSO code as read-only "PaX Team" <pageexec@freemail.hu> - 2016-02-18 11:50 +0100

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