David Rientjes 56fccf21d1 dma-direct: check return value when encrypting or decrypting memory ...

__change_page_attr() can fail which will cause set_memory_encrypted() and
set_memory_decrypted() to return non-zero.

If the device requires unencrypted DMA memory and decryption fails, simply
free the memory and fail.

If attempting to re-encrypt in the failure path and that encryption fails,
there is no alternative other than to leak the memory.

Fixes: c10f07aa27da ("dma/direct: Handle force decryption for DMA coherent buffers in common code")
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

2020-06-17 09:29:38 +02:00

..

coherent.c

dma-coherent: fix integer overflow in the reserved-memory dma allocation

2020-03-16 10:43:02 +01:00

contiguous.c

dma-contiguous: fix comment for dma_release_from_contiguous

2020-04-25 13:17:06 +02:00

debug.c

dma-debug: make __dma_entry_alloc_check_leak() static

2020-04-20 12:05:18 +02:00

direct.c

dma-direct: check return value when encrypting or decrypting memory

2020-06-17 09:29:38 +02:00

dummy.c

dma-mapping: factor out dummy DMA ops

2018-12-13 21:06:12 +01:00

Kconfig

dma-direct: re-enable mmap for !CONFIG_MMU

2020-06-17 09:29:31 +02:00

Makefile

dma-remap: separate DMA atomic pools from direct remap code

2020-04-20 12:08:45 +02:00

mapping.c

dma-mapping: Fix dma_pgprot() for unencrypted coherent pages

2020-03-17 11:52:58 +01:00

pool.c

dma-pool: fix too large DMA pools on medium memory size systems

2020-06-09 15:25:52 +02:00

remap.c

dma-mapping updates for 5.8, part 1

2020-06-06 11:43:23 -07:00

swiotlb.c

dma-direct: improve swiotlb error reporting

2020-02-05 18:53:05 +01:00

virt.c

dma-mapping: zero memory returned from dma_alloc_*

2018-12-20 08:13:52 +01:00