Re: [PATCH bpf-next] bpf: add config to allow loading modules with BTF mismatches

[Song Liu]

> On Feb 22, 2022, at 8:34 PM, Shung-Hsi Yu <shung-hsi.yu@xxxxxxxx> wrote:
> 
> On Wed, Feb 23, 2022 at 01:28:14AM +0000, Connor O'Brien wrote:
>> BTF mismatch can occur for a separately-built module even when the ABI
>> is otherwise compatible and nothing else would prevent successfully
>> loading. Add a new config to control how mismatches are handled. By
>> default, preserve the current behavior of refusing to load the
>> module. If MODULE_ALLOW_BTF_MISMATCH is enabled, load the module but
>> ignore its BTF information.
>> 
>> Suggested-by: Yonghong Song <yhs@xxxxxx>
>> Suggested-by: Michal Suchánek <msuchanek@xxxxxxx>
>> Signed-off-by: Connor O'Brien <connoro@xxxxxxxxxx>
> 
> Maybe reference the discussion thread as well?
> 
> Link: https://lore.kernel.org/bpf/CAADnVQJ+OVPnBz8z3vNu8gKXX42jCUqfuvhWAyCQDu8N_yqqwQ@xxxxxxxxxxxxxx/
> 
> Otherwise
> 
> Acked-by: Shung-Hsi Yu <shung-hsi.yu@xxxxxxxx>

Acked-by: Song Liu <songliubraving@xxxxxx>