linux-kernel - Re: [PATCH v4 0/4] Introduce the initify gcc plugin

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Message-ID: <CAGXu5jLB_ZxPcJDsBK0h-HTfb8G-GdC+BnD-1rTL5ePUvcwuzA@mail.gmail.com>
Date:   Thu, 12 Jan 2017 15:27:22 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Emese Revfy <re.emese@...il.com>
Cc:     "kernel-hardening@...ts.openwall.com" 
        <kernel-hardening@...ts.openwall.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Josh Triplett <josh@...htriplett.org>,
        PaX Team <pageexec@...email.hu>,
        Brad Spengler <spender@...ecurity.net>,
        Michal Marek <mmarek@...e.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kbuild <linux-kbuild@...r.kernel.org>, minipli@...linux.so,
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        David Brown <david.brown@...aro.org>,
        "benh@...nel.crashing.org" <benh@...nel.crashing.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jeff Layton <jlayton@...chiereds.net>,
        Sam Ravnborg <sam@...nborg.org>
Subject: Re: [PATCH v4 0/4] Introduce the initify gcc plugin

On Thu, Jan 12, 2017 at 1:41 PM, Emese Revfy <re.emese@...il.com> wrote:
> On Tue, 10 Jan 2017 17:09:31 -0800
> Kees Cook <keescook@...omium.org> wrote:
>
>> WARNING: vmlinux.o(.text+0x1087e7): Section mismatch in reference from
>> the function rebind_subsystems() to the variable
>> .init.rodata.str:__func__.4400
>> The function rebind_subsystems() references
>> the variable __initconst __func__.4400.
>> This is often because rebind_subsystems lacks a __initconst
>> annotation or the annotation of __func__.4400 is wrong.
>
> Thanks for the report, you can find the fix here:
> https://github.com/ephox-gcc-plugins/initify/commit/25f34834e3373e067133bc5d39d42c50a3592d56

Awesome! I can confirm, it builds without warnings now. Thanks!

-Kees

-- 
Kees Cook
Nexus Security