From: "Carlos O'Donell" <carlos@redhat.com>
To: "H.J. Lu" <hjl.tools@gmail.com>, Kostya Serebryany <kcc@google.com>
Cc: Kees Cook <keescook@google.com>,
LKML <linux-kernel@vger.kernel.org>,
Binutils <binutils@sourceware.org>
Subject: Re: new ELF marking
Date: Wed, 9 Aug 2017 18:37:35 -0400 [thread overview]
Message-ID: <5a612234-ae9a-e66b-9810-02331a569a2e@redhat.com> (raw)
In-Reply-To: <CAMe9rOo15PhiUwEZ_A-xb15-AgTvL9MOra+1X+yjDz_CrjJsag@mail.gmail.com>
On 08/09/2017 05:24 PM, H.J. Lu wrote:
> On Wed, Aug 9, 2017 at 1:32 PM, Kostya Serebryany <kcc@google.com> wrote:
>>>>
>>>> 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?)
>>
>>
>
> Yes, it is backward compatible by design.
... only as long as the semantics implied by the flags are hints that
can be ignored.
--
Cheers,
Carlos.
prev parent reply other threads:[~2017-08-09 22:37 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-09 17:07 Kees Cook
2017-08-09 17:16 ` H.J. Lu
2017-08-09 18:26 ` Kees Cook
2017-08-09 18:46 ` H.J. Lu
2017-08-09 18:52 ` Kees Cook
2017-08-09 19:01 ` H.J. Lu
2017-08-09 20:32 ` Kostya Serebryany
2017-08-09 21:24 ` H.J. Lu
2017-08-09 22:37 ` Carlos O'Donell [this message]
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