linux-kernel - Re: [PATCH v3 00/14] iommu: fix device leaks

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Message-ID: <3l7ushv4ecobwqrdxcvkvaomv65ce2oyty7gpectln23jp2dtg@kkrjj5oig2cy>
Date: Mon, 17 Nov 2025 10:05:23 +0100
From: Joerg Roedel <joro@...tes.org>
To: Johan Hovold <johan@...nel.org>
Cc: Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>, 
	Sven Peter <sven@...nel.org>, Janne Grunau <j@...nau.net>, 
	Rob Clark <robin.clark@....qualcomm.com>, Marek Szyprowski <m.szyprowski@...sung.com>, 
	Yong Wu <yong.wu@...iatek.com>, Matthias Brugger <matthias.bgg@...il.com>, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, Chen-Yu Tsai <wens@...e.org>, 
	Thierry Reding <thierry.reding@...il.com>, Krishna Reddy <vdumpa@...dia.com>, iommu@...ts.linux.dev, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 00/14] iommu: fix device leaks

On Mon, Oct 20, 2025 at 06:53:04AM +0200, Johan Hovold wrote:
> This series fixes device leaks in the iommu drivers, which pretty
> consistently failed to drop the reference taken by
> of_find_device_by_node() when looking up iommu platform devices.
> 
> Included are also a couple of related cleanups.
> 
> Johan
> 
> 
> Changes in v3
>  - fix mediatek use-after-free on probe deferral
>  - add acks and reviewed-bys from Marek, Yong and Thierry
> 
> Changes in v2
>  - drop omap reference sooner; remove unused pointer
>   - amend exynos commit message with reference to partial fix
>    - amend tegra commit message with reference to partial fix
>     - add Robin's ack
> 
> 
> Johan Hovold (14):
>   iommu/apple-dart: fix device leak on of_xlate()
>   iommu/qcom: fix device leak on of_xlate()
>   iommu/exynos: fix device leak on of_xlate()
>   iommu/ipmmu-vmsa: fix device leak on of_xlate()
>   iommu/mediatek: fix device leak on of_xlate()
>   iommu/mediatek: fix use-after-free on probe deferral
>   iommu/mediatek: simplify dt parsing error handling
>   iommu/mediatek-v1: fix device leak on probe_device()
>   iommu/mediatek-v1: fix device leaks on probe()
>   iommu/mediatek-v1: add missing larb count sanity check
>   iommu/omap: fix device leaks on probe_device()
>   iommu/omap: simplify probe_device() error handling
>   iommu/sun50i: fix device leak on of_xlate()
>   iommu/tegra: fix device leak on probe_device()
> 
>  drivers/iommu/apple-dart.c              |  2 ++
>  drivers/iommu/arm/arm-smmu/qcom_iommu.c | 10 +++-----
>  drivers/iommu/exynos-iommu.c            |  9 +++----
>  drivers/iommu/ipmmu-vmsa.c              |  2 ++
>  drivers/iommu/mtk_iommu.c               | 34 +++++++++++++++++--------
>  drivers/iommu/mtk_iommu_v1.c            | 28 ++++++++++++++++----
>  drivers/iommu/omap-iommu.c              |  7 ++---
>  drivers/iommu/omap-iommu.h              |  2 --
>  drivers/iommu/sun50i-iommu.c            |  2 ++
>  drivers/iommu/tegra-smmu.c              |  5 ++--
>  10 files changed, 63 insertions(+), 38 deletions(-)

Applied, thanks.