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References: <20221219055431.22596-1-ashimida.1990@gmail.com> <20230325081117.93245-1-ashimida.1990@gmail.com>
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From:   Dan Li <ashimida.1990@gmail.com>
Date:   Wed, 19 Jul 2023 16:41:39 +0800
Message-ID: <CAE+Z0PEJ_Nidzz6kY5uJrKtFSQGDdBTae_8+A1pTKW6HSV3veQ@mail.gmail.com>
Subject: Re: [RFC/RFT,V2 0/3] Add compiler support for Kernel Control Flow Integrity
To:     gcc-patches@gcc.gnu.org,
        Richard Sandiford <richard.sandiford@arm.com>,
        Masahiro Yamada <masahiroy@kernel.org>,
        Michal Marek <michal.lkml@markovi.net>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Sami Tolvanen <samitolvanen@google.com>,
        Kees Cook <keescook@chromium.org>,
        Nathan Chancellor <nathan@kernel.org>,
        Tom Rix <trix@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        "Paul E. McKenney" <paulmck@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Josh Poimboeuf <jpoimboe@kernel.org>,
        Frederic Weisbecker <frederic@kernel.org>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        Dan Li <ashimida.1990@gmail.com>,
        Marco Elver <elver@google.com>,
        Christophe Leroy <christophe.leroy@csgroup.eu>,
        Song Liu <song@kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Uros Bizjak <ubizjak@gmail.com>,
        Kumar Kartikeya Dwivedi <memxor@gmail.com>,
        Juergen Gross <jgross@suse.com>,
        Luis Chamberlain <mcgrof@kernel.org>,
        Borislav Petkov <bp@suse.de>,
        Masami Hiramatsu <mhiramat@kernel.org>,
        Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        Aaron Tomlin <atomlin@redhat.com>,
        Kalesh Singh <kaleshsingh@google.com>,
        Yuntao Wang <ytcoode@gmail.com>,
        Changbin Du <changbin.du@intel.com>
Cc:     linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev,
        linux-hardening@vger.kernel.org
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Hi All,

Embarrassingly, due to personal reasons, I may not be able to complete
the series of patches on the forward side of GCC CFI for the time being.

Please forgive me for not realizing that I should have sent this help
email a long time ago :(

This topic has been delayed for a long time, and I would be very grateful
if someone can help complete this series of patches.

BTW, please let me know if there are more groups I can cc for help.

Thanks!
Dan.

On Sat, 25 Mar 2023 at 16:11, Dan Li <ashimida.1990@gmail.com> wrote:
>
> This series of patches is mainly used to support the control flow
> integrity protection of the linux kernel [1], which is similar to
> -fsanitize=kcfi in clang 16.0 [2,3].
>
> Any suggestion please let me know :).
>
> Thanks, Dan.
>
> [1] https://lore.kernel.org/all/20220908215504.3686827-1-samitolvanen@google.com/
> [2] https://clang.llvm.org/docs/ControlFlowIntegrity.html
> [3] https://reviews.llvm.org/D119296
>
> Signed-off-by: Dan Li <ashimida.1990@gmail.com>
>
> ---
> Dan Li (3):
>   [PR102768] flag-types.h (enum sanitize_code): Extend sanitize_code to
>     64 bits to support more features
>   [PR102768] Support CFI: Add basic support for Kernel Control Flow
>     Integrity
>   [PR102768] aarch64: Add support for Kernel Control Flow Integrity
>
>  gcc/asan.h                    |   4 +-
>  gcc/c-family/c-attribs.cc     |  10 +-
>  gcc/c-family/c-common.h       |   2 +-
>  gcc/c/c-parser.cc             |   4 +-
>  gcc/cfgexpand.cc              |  26 ++++++
>  gcc/cgraphunit.cc             |  34 +++++++
>  gcc/combine.cc                |   1 +
>  gcc/common.opt                |   4 +-
>  gcc/config/aarch64/aarch64.cc | 166 ++++++++++++++++++++++++++++++++++
>  gcc/cp/typeck.cc              |   2 +-
>  gcc/doc/invoke.texi           |  36 ++++++++
>  gcc/doc/tm.texi               |  27 ++++++
>  gcc/doc/tm.texi.in            |   8 ++
>  gcc/dwarf2asm.cc              |   2 +-
>  gcc/emit-rtl.cc               |   1 +
>  gcc/emit-rtl.h                |   4 +
>  gcc/final.cc                  |  24 ++++-
>  gcc/flag-types.h              |  67 +++++++-------
>  gcc/gimple.cc                 |  11 +++
>  gcc/gimple.h                  |   5 +-
>  gcc/opt-suggestions.cc        |   2 +-
>  gcc/opts.cc                   |  26 +++---
>  gcc/opts.h                    |   8 +-
>  gcc/output.h                  |   3 +
>  gcc/reg-notes.def             |   1 +
>  gcc/target.def                |  38 ++++++++
>  gcc/toplev.cc                 |   4 +
>  gcc/tree-cfg.cc               |   2 +-
>  gcc/tree.cc                   | 144 +++++++++++++++++++++++++++++
>  gcc/tree.h                    |   1 +
>  gcc/varasm.cc                 |  26 ++++++
>  31 files changed, 627 insertions(+), 66 deletions(-)
>
> --
> 2.17.1
>