dmaengine: fsl-edma: Annotate struct struct fsl_edma_engine with __counted_by
authorKees Cook <keescook@chromium.org>
Tue, 3 Oct 2023 23:27:56 +0000 (16:27 -0700)
committerVinod Koul <vkoul@kernel.org>
Wed, 4 Oct 2023 07:21:02 +0000 (12:51 +0530)
commitc223bafdcbd51506df00509088efc62e08ef6c3f
tree02673c71787be56fea4de10ce0995cccf9632649
parenteb15bd5c2a690a84eb998140f99b2b660b4c8e7d
dmaengine: fsl-edma: Annotate struct struct fsl_edma_engine with __counted_by

Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time via CONFIG_UBSAN_BOUNDS (for
array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).

As found with Coccinelle[1], add __counted_by for struct struct fsl_edma_engine.

Cc: Vinod Koul <vkoul@kernel.org>
Cc: dmaengine@vger.kernel.org
Link: https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20231003232704.work.596-kees@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
drivers/dma/fsl-edma-common.h