Re: [GIT PULL] gcc-plugin updates for v4.19-rc1

[Alexander Popov]

Hello,

On 15.08.2018 23:56, Kees Cook wrote:
> On Wed, Aug 15, 2018 at 1:18 PM, Linus Torvalds
> <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>> I absolutely refuse to take any hardening patches at all that have
>> BUG() or panic() or similar machine-killing in it.
> 
> Okay, mental model adjusted. :) It was only "strong discouraged" until now.
> 
>> I thought VLA's were mostly gone.
...
> And after that, there's a single patch to move -Wvla up into the
> top-level Makefile:
> 
> https://patchwork.kernel.org/patch/10489873/
> 
> So, we're basically done

I've just sent the 15th version of the series with changes according to the
feedback from Linus:

1. BUG_ON() in stackleak_erase() is safely eliminated;

2. Stack Clash detection (alloca() check) is completely dropped, since global
'-Wvla' should arrive soon. stackleak_check_alloca() for arm64 is dropped as
well in a separate commit.

This version is rebased onto Linus' tree.

Best regards,
Alexander