[APS-24624] Missing patch in K5.15 against kernel panic

["Bilge Aydin" <b.aydin@samsung.com>]

Dear Linux community,

I am leading a project at Samsung where we utilized your kernel 5.15 in our system. Recently we faced an important kernel panic issue whose fix must be following patch:
https://lore.kernel.org/all/1946ef9f774851732eed78760a78ec40dbc6d178.1667591503.git.robin.murphy@arm.com/

The problem for us is that this patch must be available from kernel 6.1 onwards. 
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/iommu/iommu.c?h=v6.1.119 
Clear to us is that it is not integrated into K5.15 yet: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/iommu/iommu.c?h=v5.15.173 

On the other side we can see that this patch was already applied to Android Common Kernel android13-5.15  https://android-review.googlesource.com/q/I51dbcdc5dc536b0e69c6187b2d7ac6a2031a305b. In particular, we can see the same implementation in the recent ACK release https://android.googlesource.com/kernel/common/+/refs/tags/android13-5.15-2024-11_r2/drivers/iommu/iommu.c  given on https://source.android.com/docs/core/architecture/kernel/gki-android13-5_15-release-builds 

Do you have any plan to adjust your implementation in drivers/iommu/iommu.c in K5.15 as present in K6.1? If not, since the issue in our project is very critical for us, may I ask you kindly to trigger the sync of K5.15 and K6.1 soon?

I would appreciate highly your response and any support.


Kind regards / Mit freundlichen Grüßen

-Confidential-
Bilge Aydin
Project Manager
Phone:: +49-89-45578-1055 · Mobile:: +49-160-8855875 · Email: b.aydin@samsung.com 
Samsung Semiconductor Europe GmbH
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Managing Director: Dermot Ryan

www.samsung.com/semiconductor/solutions/automotive




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