Re: [PATCH v3 06/14] iommu/mediatek: fix use-after-free on probe deferral

[Yong Wu (吴勇)]

On Mon, 2025-10-20 at 06:53 +0200, Johan Hovold wrote:
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> The driver is dropping the references taken to the larb devices
> during
> probe after successful lookup as well as on errors. This can
> potentially lead to a use-after-free in case a larb device has not
> yet
> been bound to its driver so that the iommu driver probe defers.
> 
> Fix this by keeping the references as expected while the iommu driver
> is
> bound.
> 
> Fixes: 26593928564c ("iommu/mediatek: Add error path for loop of
> mm_dts_parse")
> Cc: stable@xxxxxxxxxxxxxxx
> Cc: Yong Wu <yong.wu@xxxxxxxxxxxx>
> Acked-by: Robin Murphy <robin.murphy@xxxxxxx>
> Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
> ---

Reviewed-by: Yong Wu <yong.wu@xxxxxxxxxxxx>