Re: [PATCH] mm/cma: move put_page_testzero() out of VM_WARN_ON in cma_release()

[Zi Yan]

On 24 Feb 2026, at 21:20, SeongJae Park wrote:

> On Tue, 24 Feb 2026 18:18:44 -0800 SeongJae Park <sj@xxxxxxxxxx> wrote:
>
>> On Tue, 24 Feb 2026 16:39:46 -0500 Zi Yan <ziy@xxxxxxxxxx> wrote:
>>
>>> When CONFIG_DEBUG_VM is not set, VM_WARN_ON is a NOP. Putting any statement
>>> with side effect inside it is incorrect. Move put_page_testzero() out and
>>> check its return value in VM_WARN_ON. Add __maybe_unused to the return
>>> value for when CONFIG_DEBUG_VM is not set.
>>>
>>> Fixes: 9bda131c6093 ("mm: cma: add cma_alloc_frozen{_compound}()")
>>> Reported-by: Ron Economos <re@xxxxxxxx>
>>> Closes: https://lore.kernel.org/all/1b17c38f-30d3-4bb4-a7e1-e74b19ada885@xxxxxxxx/
>
> I forgot asking this, sorry.
>
> Should we Cc stable@ ?

The commit is just in 7.0-rc1. Nothing is needed for stable.

Best Regards,
Yan, Zi