Re: klp: make object/func-walking helpers more robust

[Jessica Yu]

+++ Miroslav Benes [28/04/16 16:34 +0200]:
> Current object-walking helper checks the presence of obj->funcs to
> determine the end of objs array in klp_object structure. This is
> somewhat fragile because one can easily forget about funcs definition
> during livepatch creation. In such a case the livepatch module is
> successfully loaded and all objects after the incorrect one are omitted.
> This is very confusing. Let's make the helper more robust and check also
> for the other external member, name. Thus the helper correctly stops on
> an empty item of the array. We need to have a check for obj->funcs in
> klp_init_object() to make it work.
>
> The same applies to a func-walking helper.
>
> As a benefit we'll check for new_func member definition during the
> livepatch initialization. There is no such check anywhere in the code
> now.
>
> Signed-off-by: Miroslav Benes <mbenes@xxxxxxx>

Acked-by: Jessica Yu <jeyu@xxxxxxxxxx>