Re: new ELF marking

From	Kostya Serebryany <kcc@google.com>
Newsgroups	linux.kernel
Subject	Re: new ELF marking
Date	2017-08-09 22:40 +0200
Message-ID	<ucFVN-3Rs-33@gated-at.bofh.it> (permalink)
References	(1 earlier) <ucCOh-1QT-85@gated-at.bofh.it> <ucDTX-2tC-5@gated-at.bofh.it> <ucEdj-2Fa-3@gated-at.bofh.it> <ucEmZ-2It-3@gated-at.bofh.it> <ucEwG-30X-23@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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> >
> > I believe this would only be an output bit, but I'm not sure how it
> > would be wired into binutils. Kostya, do you know any details about
> > how AddressSanitizer might be able to create this ELF note?

I don't, hopefully H.J's suggestion works.
Will it be backward compatible?
(i.e. will the binaries built in the new way work on the old kernels?)

Thanks!

--kcc
>
>
> if it is an output only bit, "-z fobar" should work, like
>
>   -z ibt                      Generate GNU_PROPERTY_X86_FEATURE_1_IBT
>   -z shstk                    Generate GNU_PROPERTY_X86_FEATURE_1_SHSTK
>
> Or you can put it in the input file and linker will copy it to output, like
> GNU_PROPERTY_STACK_SIZE.

Thread

new ELF marking Kees Cook <keescook@google.com> - 2017-08-09 19:10 +0200
  Re: new ELF marking "H.J. Lu" <hjl.tools@gmail.com> - 2017-08-09 19:20 +0200
    Re: new ELF marking Kees Cook <keescook@google.com> - 2017-08-09 20:30 +0200
      Re: new ELF marking "H.J. Lu" <hjl.tools@gmail.com> - 2017-08-09 20:50 +0200
        Re: new ELF marking Kees Cook <keescook@google.com> - 2017-08-09 21:00 +0200
          Re: new ELF marking "H.J. Lu" <hjl.tools@gmail.com> - 2017-08-09 21:10 +0200
            Re: new ELF marking Kostya Serebryany <kcc@google.com> - 2017-08-09 22:40 +0200
              Re: new ELF marking "H.J. Lu" <hjl.tools@gmail.com> - 2017-08-09 23:30 +0200
                Re: new ELF marking Carlos O'Donell <carlos@redhat.com> - 2017-08-10 00:40 +0200

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