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

Il 20/10/25 06:53, Johan Hovold ha scritto:

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@vger.kernel.org Cc: Yong Wu yong.wu@mediatek.com Acked-by: Robin Murphy robin.murphy@arm.com Signed-off-by: Johan Hovold johan@kernel.org

Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com