Re: [GIT PULL] Compiler Attributes for v4.20-rc1

[Andrey Ryabinin]

On 11/02/2018 07:11 PM, Linus Torvalds wrote:
> On Fri, Nov 2, 2018 at 6:16 AM Andrey Ryabinin <aryabi...@virtuozzo.com> 
> wrote:
>>
>> On 11/02/2018 04:46 AM, Linus Torvalds wrote:
>>>
>>> So I _think_ the KASAN config should have a
>>>
>>>     depends on CC_IS_GCC && GCC_VERSION >= 40902
>>>
>>> on it, but maybe there is something I'm missing.
>>
>> I'd rather use cc-option instead of version check, since we also support 
>> clang.
> 
> That would be even better, but I thought the requirement for 4.9.2
> came not from the option existing, but because of some bugs getting
> fixed?

It looks unusual but -fsanitize=kernel-address really showed up only in 4.9.2.
It was actually backported from 5.0 branch to 4.9 for whatever reason.

> 
> But if we can do it without version checks, that would be lovely.
> 
>                     Linus
>