Re: mm/kmsan/instrumentation.c:41:26: warning: no previous prototype for function '__msan_metadata_ptr_for_load_n'

[Vlastimil Babka]

On 1/11/23 13:10, Alexander Potapenko wrote:
> On Mon, Jan 2, 2023 at 11:01 AM Vlastimil Babka <vbabka@xxxxxxx> wrote:
>>
>> +CC kmsan folks.
>>
>> I think it's another side-effect where CONFIG_SLUB_TINY excludes KASAN which
>> in turn allows KMSAN to be enabled and uncover a pre-existing issue.
> 
>  Thanks for bringing this up, I'll fix this as Marco proposes.
> 
> Would it also make sense to exclude KMSAN with CONFIG_SLUB_TINY?

If the root causes are fixed, then it's not necessary? AFAIK SLUB_TINY only
indirectly caused KMSAN to be newly enabled in some configs, but there's no
fundamental incompatibility that I know of.