Re: [PATCH v2 11/11] kasan: rework Kconfig settings

From: Arnd Bergmann
Date: Fri Jun 16 2017 - 07:42:26 EST

On Thu, Jun 15, 2017 at 9:02 AM, Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote:
> On Wed, Jun 14, 2017 at 11:15 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote:

>> diff --git a/lib/Kconfig.kmemcheck b/lib/Kconfig.kmemcheck
>> index 846e039a86b4..58b9f3f81dc8 100644
>> --- a/lib/Kconfig.kmemcheck
>> +++ b/lib/Kconfig.kmemcheck
>> @@ -7,6 +7,7 @@ menuconfig KMEMCHECK
>> bool "kmemcheck: trap use of uninitialized memory"
>> depends on DEBUG_KERNEL
>> depends on !X86_USE_3DNOW
>> + depends on !KASAN_EXTRA
> KASAN is not meant to work with KMEMCHECK. I am not sure if it even
> works, and it's definitely unmaintained. Even if it works now, I am
> not sure what could be the intention of somebody running that
> combination.
> So I think we should do: depends on !KASAN
> Will it make things simper for you?

I don't think it will change anything for me, other than having to respin the
patch series or adding a patch on top.

I have just checked that KMEMCHECK is already disabled in allmodconfig,
and all but one of the warnings I address in the series show up in
allmodconfig too.