linux-kernel - Re: [PATCH v5 32/36] x86/boot/compressed: Reorganize zero-size section asserts

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Message-ID: <202008211123.AD9EA0441@keescook>
Date:   Fri, 21 Aug 2020 11:24:25 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Arvind Sankar <nivedita@...m.mit.edu>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Mark Rutland <mark.rutland@....com>,
        Ard Biesheuvel <ardb@...nel.org>,
        Peter Collingbourne <pcc@...gle.com>,
        James Morse <james.morse@....com>,
        Borislav Petkov <bp@...e.de>, Ingo Molnar <mingo@...hat.com>,
        Russell King <linux@...linux.org.uk>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nathan Chancellor <natechancellor@...il.com>,
        Arnd Bergmann <arnd@...db.de>, x86@...nel.org,
        clang-built-linux@...glegroups.com, linux-arch@...r.kernel.org,
        linux-efi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 32/36] x86/boot/compressed: Reorganize zero-size
 section asserts

On Sat, Aug 01, 2020 at 01:12:25PM -0400, Arvind Sankar wrote:
> Actually, moving it to the end also requires marking it INFO or
> stripping it out when creating the bzImage. Otherwise we get back to
> that old problem of materializing .bss/.pgtable in the bzImage.

Yeah -- I wonder what the best way to make sure we avoid causing the
.bss appearing again...

-- 
Kees Cook