Re: [PATCH v2] mm/damon/core: get memcg reference before access

[SeongJae Park]

On Wed, 24 Dec 2025 16:29:04 -0800 Shakeel Butt <shakeel.butt@xxxxxxxxx> wrote:

> The commit b74a120bcf507 ("mm/damon/core: implement
> DAMOS_QUOTA_NODE_MEMCG_USED_BP") added accesses to memcg structure
> without getting reference to it. This is unsafe. Let's get the reference
> before accessing the memcg.
> 
> Fixes: b74a120bcf507 ("mm/damon/core: implement DAMOS_QUOTA_NODE_MEMCG_USED_BP")
> Signed-off-by: Shakeel Butt <shakeel.butt@xxxxxxxxx>
> Reviewed-by: SeongJae Park <sj@xxxxxxxxxx>
> ---
> Changes since v1:
> - Changed the subject as requested by SJ.

Thank you, Shakeel!


Thanks,
SJ

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