Public bug reported:
https://lore.kernel.org/all/20210929023300.335969-1-steve...@google.com/
landed to v5.16 and is being requested to backport to v5.15.y in
https://lore.kernel.org/stable/bl1pr12mb5157cd6b2c9d6b8525cfad0ee2...@bl1pr12mb5157.namprd12.prod.outlook.com/T/#u
.
Related commits are:
08ae5d4a1ae9 iommu/dma: Fix sync_sg with swiotlb
06e620345d54 iommu/dma: Fix arch_sync_dma for map
ee9d4097cc14 iommu/dma: Skip extra sync during unmap w/swiotlb
9b49bbc2c4df iommu/dma: Fold _swiotlb helpers into callers
2e727bffbe93 iommu/dma: Check CONFIG_SWIOTLB more broadly
e81e99bacc9f swiotlb: Support aligned swiotlb buffers
2cbc61a1b166 iommu/dma: Account for min_align_mask w/swiotlb
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1969091
Title:
Fixes for dma-iommu swiotlb bounce buffers
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