Re: [PATCH] dma-fence: Make dma_fence_dedup_array() robust against 0-count input

["Christian König" <christian.koenig@amd.com>]

On 6/29/26 11:06, Philipp Stanner wrote:
> On Mon, 2026-06-29 at 10:52 +0200, Christian König wrote:
>> On 6/29/26 10:49, Philipp Stanner wrote:
>>>>
>>>> I will add a CC stable before pushing to drm-misc-fixes.
>>>
>>> No offense intended or taken, but don't the DRM rules say that things
>>> do not get merged while there are outstanding concerns or significant
>>> points in review feedback?
>>
>> I haven't seen that before writing the response.
>>
>> I usually go over my mails till the end and wait a couple of hours before pushing anything.
>>
>>> What about my comments?
>>
>> Looks valid to me as well, but I think that is a separate issue.
> 
> But if we keep it an integer for now, and if that check is added, and
> it most certainly should also catch negative integers, shouldn't it?

Maybe with a WARN_ON(), but not as regular code path.

The thing is I think we need to backport this fix to stable kernels, but switching from signed to unsigned is only a minor cleanup when no real users are currently affected.

Christian.

> 
> P.