linux-kernel - Re: 4.14.9 doesn't boot (regression)

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Message-ID: <CA+55aFyJDzwih5yp6m=+NpKcJQhMD8OitTjh-+9FVOO_PmeqAw@mail.gmail.com>
Date:   Fri, 29 Dec 2017 17:34:43 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Andy Lutomirski <luto@...capital.net>,
        Dave Hansen <dave.hansen@...el.com>
Cc:     Toralf Förster <toralf.foerster@....de>,
        Alexander Tsoy <alexander@...y.me>,
        stable <stable@...r.kernel.org>,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>
Subject: Re: 4.14.9 doesn't boot (regression)

On Fri, Dec 29, 2017 at 5:00 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> Good. I was not feeling so happy about this bug report, but now I can
> firmly just blame the gentoo compiler for having some shit-for-brains
> "feature".

Looks like I can generate similar bad code with the F26 version of
gcc, it's just not enabled by default.

So all gentoo did was change the default options.

I suspect we should just add a

    KBUILD_CFLAGS  += $(call cc-option,-fno-stack-check,)

somewhere to the main Makefile, just to make sure.

Maybe like the appended?

Toralf, Alexander, does this make things JustWork(tm) for you?

                Linus

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