Re: [PATCH v2 19/53] objtool/klp: Fix pointer comparisons for rodata objects

On Fri, May 1, 2026 at 5:08 AM Josh Poimboeuf <[email protected]> wrote:
>
> klp-diff treats all rodata as uncorrelated, so any reference to it uses
> a duplicated copy rather than using a KLP reloc.
>
> For the contents of the data itself, a duplicated copy is fine.
> However, pointer comparisons (e.g., f->f_op == &foo_ops) are broken.
>
> Fix it by correlating non-anonymous rodata objects.
>
> Also, use a new find_symbol_containing_inclusive() helper for matching
> the end of a symbol so bounds calculations don't get broken, for the
> case where an array or other symbol's ending address is used as part of
> a bounds calculation.
>
> While these are really two distinct changes, they need to be done in the
> same patch so as to avoid introducing bisection regressions.
>
> Signed-off-by: Josh Poimboeuf <[email protected]>

Acked-by: Song Liu <[email protected]>