Re: [PATCH 0/7] iommu/arm-smmu-v3: Fixes reported by Sashiko

[Jason Gunthorpe <jgg@nvidia.com>]

On Fri, Aug 28, 2026 at 12:53:35PM +0000, Mostafa Saleh wrote:
> While running sashiko locally on the pKVM SMMUv3 driver patches, it
> reported some pre-existing issues in the SMMUv3 driver (the RB tree
> corruption and a missing NULL check) and given that this is not the
> first time a pre-existing issue appears in the driver from sashiko,
> I went ahead and passed the whole driver to Sashiko which reported a
> dozen of other issues(except the last one in this series), I included
> fixes for bugs I believe are true or worth fixing (others were mostly
> missing NULL checks or bizarre HW/FW configs I don’t think are needed).
> 
> I also sorted the patches based on severity from the most critical to
> the least, so it is easier to apply a prefix if some bugs are too
> theoretical
> 
> Mostafa Saleh (7):
>   iommu/arm-smmu-v3: Ensure L2 tables are visible before L1 ptrs
>   iommu/arm-smmu-v3: Prevent rbtree corruption from duplicate streams
>   iommu/arm-smmu-v3-iommufd: Fix error path in
>     arm_vsmmu_cache_invalidate()
>   iommu/arm-smmu-v3-test: Fix arm_smmu_v3_test_debug_print_used_bits()
>   iommu/arm-smmu-v3-test: Add missing error checks for inv array
>   iommu/arm-smmu-v3-test: Fix OOB in arm_smmu_v3_invs_test_verify()
>   iommu/arm-smmu-v3-test: Fix UBSAN error

Does this need a respin? At least the 3rd patch there should no go
as the iommufd tree has a different version of that fix now

Jason