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SubjectRe: 4.14.9 doesn't boot (regression)
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В Пт, 29/12/2017 в 17:34 -0800, Linus Torvalds пишет:
> On Fri, Dec 29, 2017 at 5:00 PM, Linus Torvalds
> <torvalds@linux-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.

Yes, and only in hardened profile, so most users don't have -fstack-
check by default. :)

>
> 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?

I can confirm that with your patch my gcc produces working kernel.

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