Messages in this thread | | | From | Linus Torvalds <> | Date | Sun, 21 Jul 2019 09:58:04 -0700 | Subject | Re: [PATCH v2] iommu/amd: fix a crash in iova_magazine_free_pfns |
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On Thu, Jul 11, 2019 at 9:18 AM Qian Cai <cai@lca.pw> wrote: > > The commit b3aa14f02254 ("iommu: remove the mapping_error dma_map_ops > method") incorrectly changed the checking from dma_ops_alloc_iova() in > map_sg() causes a crash under memory pressure as dma_ops_alloc_iova() > never return DMA_MAPPING_ERROR on failure but 0, so the error handling > is all wrong.
This one seems to have fallen through the cracks.
Applied directly.
Maybe it's hiding in some fixes tree that I haven't gotten a pull request for yet?
Linus
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