Re: F45 Change Proposal: Enable Shadow Stack by Default on x86_64 (system-wide)

Neal Gompa <[email protected]>
Newsgroups gmane.linux.redhat.fedora.devel
Message-ID <CAEg-Je9yqi9vQyDzQjcWbyXCG4O4MvD-wbNo2b6t3MVScgXHNw@mail.gmail.com>
On Wed, Jul 1, 2026 at 3:59 PM Zbigniew Jędrzejewski-Szmek
<[email protected]> wrote:
>
> > Wiki - https://fedoraproject.org/wiki/Changes/ShadowStack
> > # The `dlopen`ed library is compiled with Shadow Stack support enabled.
> > # The application opts out of Shadow Stack support using glibc's
> > System-Wide Tunables feature. For example, a package named `app`
> > providing `/usr/bin/app` would install `/etc/tunables.conf.d/app.conf`
>
> Please, please, please, make that /usr/lib/tunables.conf.d/app.conf
> by default. As described below, this is clearly something that is
> part of the rpm and not "local configuration".
>

I don't think this path exists. That's a glibc thing, I think, and the
doc about it doesn't indicate any hermetic /usr support.

https://sourceware.org/git/?p=glibc.git;a=blobdiff;f=manual/tunables.texi;h=828c68151ad887550430605f007e289b5235f110;hp=e1d9fbae9cebe961fe45203251a761c3323a9917;hb=fae194043a099d45c044c883467c934153ecc51f;hpb=fcea66cd4685f9f3719e09cac52c73b9ece4bade


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