Rick Edgecombe b57326c96b 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 13:10:01 +02:00
..
coherent.c	dma-mapping: clear dev->dma_mem to NULL after freeing it	2023-12-15 12:32:45 +01:00
contiguous.c	Revert "dma-contiguous: check for memory region overlap"	2023-09-08 05:58:32 -03:00
debug.c	dma-mapping fixes for Linux 6.8	2024-01-18 16:49:34 -08:00
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 13:10:01 +02:00
direct.h	dma-mapping: fix dma_addressing_limited() if dma_range_map can't cover all system RAM	2023-11-06 08:38:16 +01:00
dummy.c	dma-mapping: return error code from dma_dummy_map_sg()	2021-08-09 17:13:06 +02:00
Kconfig	dma-direct: add a CONFIG_ARCH_HAS_DMA_ALLOC symbol	2023-10-22 16:38:54 +02:00
Makefile	dma-mapping: remove CONFIG_DMA_REMAP	2022-03-03 14:00:57 +03:00
map_benchmark.c	dma-mapping: benchmark: remove MODULE_LICENSE in non-modules	2023-04-13 13:13:51 -07:00
mapping.c	dma-mapping: fix dma_addressing_limited() if dma_range_map can't cover all system RAM	2023-11-06 08:38:16 +01:00
ops_helpers.c	dma-mapping: handle vmalloc addresses in dma_common_{mmap,get_sgtable}	2021-07-16 11:30:26 +02:00
pool.c	mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER	2024-01-08 15:27:15 -08:00
remap.c	dma-remap: use kvmalloc_array/kvfree for larger dma memory remap	2023-06-07 15:06:28 +02:00
swiotlb.c	swiotlb: Fix alignment checks when both allocation and DMA masks are present	2024-04-03 15:32:33 +02:00