Re: [PATCH] of: unittest: Fix out of bounds array access when id < 0

[Rob Herring]

On Tue, Dec 21, 2021 at 5:34 AM Yin Xiujiang <yinxiujiang@xxxxxxxxxx> wrote:
>
> In of_unittest_untrack_overlay if id is less than 0 then
> overlay_id_bits will be out of bounds. And it is also mentioned
> in bugzilla as a bug report:
> https://bugzilla.kernel.org/show_bug.cgi?id=214867
>
> Fix this bug by tiggering WARN_ON()

If id shouldn't be less than 0, can we make it unsigned instead as
discussed here[1].

Rob

[1] https://lore.kernel.org/all/c474a371-b524-1da8-4a67-e72cf8f2b0f7@xxxxxxxxx/