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From:   Sami Tolvanen <samitolvanen@google.com>
Date:   Thu, 5 May 2022 09:00:39 -0700
Message-ID: <CABCJKuced3-MoZoBdpL+=h1PC32C-5C12HZH96+dfEp43dJwaQ@mail.gmail.com>
Subject: Re: [RFC PATCH 00/21] KCFI support
To:     Mark Rutland <mark.rutland@arm.com>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Kees Cook <keescook@chromium.org>,
        Josh Poimboeuf <jpoimboe@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>, X86 ML <x86@kernel.org>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Nathan Chancellor <nathan@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Joao Moreira <joao@overdrivepizza.com>,
        Sedat Dilek <sedat.dilek@gmail.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        linux-hardening@vger.kernel.org,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
        llvm@lists.linux.dev
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On Thu, May 5, 2022 at 5:36 AM Mark Rutland <mark.rutland@arm.com> wrote:
> FWIW, a `-DLLVM_ENABLE_ASSERTIONS=ON` build also seems to work for me when
> building a kernel with CONFIG_CFI_CLANG=y. It's much slower than a regular
> Release build, so I'm still waiting for that to finish building a kernel, but
> it has gotten much further through the build without issues.

Thanks for confirming. This issue should be fixed here if you want to
give it another try:

https://github.com/samitolvanen/llvm-project/commits/kcfi

Sami