linux-kernel - Re: [PATCH 0/2] Fix CFI failures with GCOV_PROFILE

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Message-ID: <CAKwvOdkMkXYKUKmMdGG8B+afHWEcJ=SBZAZBsu2b8ojGZw86=Q@mail.gmail.com>
Date:   Fri, 23 Jun 2023 10:47:32 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Sami Tolvanen <samitolvanen@...gle.com>
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Kees Cook <keescook@...omium.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nicolas Schier <nicolas@...sle.eu>, Tom Rix <trix@...hat.com>,
        linux-kbuild@...r.kernel.org, llvm@...ts.linux.dev,
        linux-kernel@...r.kernel.org, Joe Fradley <joefradley@...gle.com>
Subject: Re: [PATCH 0/2] Fix CFI failures with GCOV_PROFILE_ALL

On Thu, Jun 22, 2023 at 5:11 PM Sami Tolvanen <samitolvanen@...gle.com> wrote:
>
> Hi folks,
>
> The following two patches fix CFI failures with GCOV_PROFILE_ALL,
> where the compiler injects indirectly called functions to object
> files that otherwise contain no executable code, and are not
> processed by objtool or don't have CFI enabled. This results in
> missing or incorrect type hashes during boot and when modules are
> loaded.
>
> Sami Tolvanen (2):
>   kbuild: Fix CFI failures with GCOV
>   kbuild: Disable GCOV for *.mod.o
>
>  init/Makefile             | 1 +
>  scripts/Makefile.modfinal | 2 +-
>  scripts/Makefile.vmlinux  | 1 +
>  3 files changed, 3 insertions(+), 1 deletion(-)

Thanks for the patches!
Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>

>
>
> base-commit: 007034977130b49b618a5206aad54f634d9f169c
> --
> 2.41.0.162.gfafddb0af9-goog
>
>


-- 
Thanks,
~Nick Desaulniers