Rick Edgecombe 4e0cfb25d4 dma-direct: Leak pages on dma_set_decrypted() failure ... [ Upstream commit b9fa16949d ] On TDX it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues. DMA could free decrypted/shared pages if dma_set_decrypted() fails. This should be a rare case. Just leak the pages in this case instead of freeing them. Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-04-13 13:04:59 +02:00
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Kconfig	dma-mapping: remove CONFIG_DMA_REMAP	2022-03-03 14:00:57 +03:00
Makefile	dma-mapping: remove CONFIG_DMA_REMAP	2022-03-03 14:00:57 +03:00
coherent.c	dma-mapping: clear dev->dma_mem to NULL after freeing it	2024-01-25 15:27:28 -08:00
contiguous.c	cma: factor out minimum alignment requirement	2022-03-22 15:57:05 -07:00
debug.c	dma-debug: don't call __dma_entry_alloc_check_leak() under free_entries_lock	2023-10-06 14:56:50 +02:00
debug.h	dma-debug: teach add_dma_entry() about DMA_ATTR_SKIP_CPU_SYNC	2021-10-18 12:46:45 +02:00
direct.c	dma-direct: Leak pages on dma_set_decrypted() failure	2024-04-13 13:04:59 +02:00
direct.h	dma-direct: support PCI P2PDMA pages in dma-direct map_sg	2022-07-26 07:27:47 -04:00
dummy.c	dma-mapping: return error code from dma_dummy_map_sg()	2021-08-09 17:13:06 +02:00
map_benchmark.c	dma-mapping: benchmark: extract a common header file for map_benchmark definition	2022-03-10 07:41:14 +01:00
mapping.c	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -07:00
ops_helpers.c	dma-mapping: handle vmalloc addresses in dma_common_{mmap,get_sgtable}	2021-07-16 11:30:26 +02:00
pool.c	dma/pool: create dma atomic pool only if dma zone has managed pages	2022-01-15 16:30:29 +02:00
remap.c	dma-remap: use kvmalloc_array/kvfree for larger dma memory remap	2023-08-23 17:52:21 +02:00
swiotlb.c	swiotlb: Fix alignment checks when both allocation and DMA masks are present	2024-04-03 15:19:44 +02:00