Re: 4.14.9 doesn't boot (regression)

[Alexander Tsoy]

Ð ÐÑ, 29/12/2017 Ð 17:34 -0800, Linus Torvalds ÐÐÑÐÑ:
> On Fri, Dec 29, 2017 at 5:00 PM, Linus Torvalds
> <torvalds@xxxxxxxxxxxxxxxxxxxx> 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
> 
> ÂÂÂÂKBUILD_CFLAGSÂÂ+= $(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 myÂgcc produces working kernel.