Re: F45 Change Proposal: Enable Shadow Stack by Default on x86_64 (system-wide)
Florian Weimer <[email protected]>
| Newsgroups | gmane.linux.redhat.fedora.devel |
|---|---|
| Message-ID | <[email protected]> |
* Zbigniew Jędrzejewski-Szmek: > On Wed, Jul 01, 2026 at 04:12:03PM -0400, Neal Gompa wrote: >> 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 > > Hmm, lack of support for the /usr-/etc split in new code in 2026 > is … disappointing. We can still change it. I suggested that we re-use /etc/ld.so.conf for the tunables settings. Then Bug 2440274 - Source ld.so configs drop-ins from /usr/lib <https://bugzilla.redhat.com/show_bug.cgi?id=2440274> would cover everything. But it was a minority viewpoint at the time of patch review. Thanks, Florian -- _______________________________________________ devel mailing list -- [email protected] To unsubscribe send an email to [email protected] Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/[email protected] Do not reply to spam, report it: https://forge.fedoraproject.org/infra/tickets/issues/new