linux-kernel - Re: [PATCH] iommu/arm-smmu-v3: Fix error check in arm_smmu_alloc_cd

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Message-Id: <176400339226.703452.83509466898335553.b4-ty@kernel.org>
Date: Mon, 24 Nov 2025 19:18:33 +0000
From: Will Deacon <will@...nel.org>
To: Robin Murphy <robin.murphy@....com>,
	Joerg Roedel <joro@...tes.org>,
	Jason Gunthorpe <jgg@...pe.ca>,
	Nicolin Chen <nicolinc@...dia.com>,
	Pranjal Shrivastava <praan@...gle.com>,
	Kevin Tian <kevin.tian@...el.com>,
	Lu Baolu <baolu.lu@...ux.intel.com>,
	Ryan Huang <tzukui@...gle.com>
Cc: catalin.marinas@....com,
	kernel-team@...roid.com,
	Will Deacon <will@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Daniel Mentz <danielmentz@...gle.com>
Subject: Re: [PATCH] iommu/arm-smmu-v3: Fix error check in arm_smmu_alloc_cd_tables

On Fri, 07 Nov 2025 11:09:17 -0800, Ryan Huang wrote:
> In arm_smmu_alloc_cd_tables(), the error check following the
> dma_alloc_coherent() for cd_table->l2.l1tab incorrectly tests
> cd_table->l2.l2ptrs.
> 
> This means an allocation failure for l1tab goes undetected, causing
> the function to return 0 (success) erroneously.
> 
> [...]

Applied to iommu (arm/smmu/updates), thanks!

[1/1] iommu/arm-smmu-v3: Fix error check in arm_smmu_alloc_cd_tables
      https://git.kernel.org/iommu/c/5941f0e0c1e0

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
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