linux-kernel - Re: [PATCH v4 3/3] modversions: treat symbol CRCs as 32 bit quantities on 64 bit archs

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Message-ID: <CA+55aFx5QHfi3X6cxbmXHcxTWfBfxTG33N+kX4Ro=747rnuxtw@mail.gmail.com>
Date:   Wed, 18 Jan 2017 10:27:56 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Jessica Yu <jeyu@...hat.com>,
        Rusty Russell <rusty@...tcorp.com.au>,
        "Suzuki K. Poulose" <suzuki.poulose@....com>,
        Will Deacon <will.deacon@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Arnd Bergmann <arnd@...db.de>,
        Al Viro <viro@...iv.linux.org.uk>,
        ppc-dev <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH v4 3/3] modversions: treat symbol CRCs as 32 bit
 quantities on 64 bit archs

On Wed, Jan 18, 2017 at 5:52 AM, Ard Biesheuvel
<ard.biesheuvel@...aro.org> wrote:
>
> It turns out that this odd treatment of absolute symbols (i.e.,
> symbols having section number SHN_ABS) is a known issue in GNU ld
>
> https://sourceware.org/ml/binutils/2012-05/msg00019.html

Ugh. I hate the GNU linker. It's slow, it does nasty crazy fixups, and
it's apparently buggy too.

I wonder what happened to gold, and why it didn't take over. I'm
assuming it had _other_ bugs.. Oh well.

                 Linus