diff options
| author | Linus Torvalds | 2022-02-27 12:42:37 -0800 |
|---|---|---|
| committer | Linus Torvalds | 2022-02-27 12:42:37 -0800 |
| commit | 98f3e84f8df66f1ac9d04b6d8093993c9bfd69e6 (patch) | |
| tree | 2b63116b52a5ba74ee2565b3f13454b300947777 /kernel | |
| parent | 6676ba2a6df6864a6b7b11f20166026e2201b627 (diff) | |
| parent | ddbd89deb7d32b1fbb879f48d68fda1a8ac58e8e (diff) | |
Merge tag 'dma-mapping-5.17-1' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fix from Christoph Hellwig:
- fix a swiotlb info leak (Halil Pasic)
* tag 'dma-mapping-5.17-1' of git://git.infradead.org/users/hch/dma-mapping:
swiotlb: fix info leak with DMA_FROM_DEVICE
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/dma/swiotlb.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index f1e7ea160b43..bfc56cb21705 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -628,7 +628,8 @@ phys_addr_t swiotlb_tbl_map_single(struct device *dev, phys_addr_t orig_addr, mem->slots[index + i].orig_addr = slot_addr(orig_addr, i); tlb_addr = slot_addr(mem->start, index) + offset; if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC) && - (dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL)) + (!(attrs & DMA_ATTR_OVERWRITE) || dir == DMA_TO_DEVICE || + dir == DMA_BIDIRECTIONAL)) swiotlb_bounce(dev, tlb_addr, mapping_size, DMA_TO_DEVICE); return tlb_addr; } |