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Date: Wed, 6 Oct 2021 09:17:52 -0700 From: Sami Tolvanen <samitolvanen@...gle.com> To: Josh Poimboeuf <jpoimboe@...hat.com> Cc: X86 ML <x86@...nel.org>, Kees Cook <keescook@...omium.org>, Peter Zijlstra <peterz@...radead.org>, Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, Sedat Dilek <sedat.dilek@...il.com>, linux-hardening@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>, llvm@...ts.linux.dev Subject: Re: [PATCH v4 11/15] x86, relocs: Ignore __typeid__ relocations On Tue, Oct 5, 2021 at 8:31 PM Josh Poimboeuf <jpoimboe@...hat.com> wrote: > > On Thu, Sep 30, 2021 at 11:05:27AM -0700, Sami Tolvanen wrote: > > From: Kees Cook <keescook@...omium.org> > > > > The __typeid__* symbols aren't actually relocations, so they can be > > ignored during relocation generation. > > Then what are they? It would be good to add that information here. These relocations are for compiler-generated constants that it uses for indirect call type checking. I think we can clarify this in the next version. Sami
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