diff options
| author | Kees Cook <keescook@chromium.org> | 2023-08-17 16:58:44 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-09-28 16:42:14 +0530 |
| commit | b9fe0bd5903140cc3e1ae4e542ae7ff38c90d011 (patch) | |
| tree | f1b185f2ad6b3d2968717e7cb825fad444479adb /drivers/dma/qcom/bam_dma.c | |
| parent | fd1cb31a037bf8894a710392c2354281c5276d09 (diff) | |
dmaengine: qcom: bam_dma: Annotate struct bam_async_desc 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 checking 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 bam_async_desc.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <andersson@kernel.org>
Cc: Konrad Dybcio <konrad.dybcio@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: dmaengine@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230817235859.49846-7-keescook@chromium.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/qcom/bam_dma.c')
| -rw-r--r-- | drivers/dma/qcom/bam_dma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c index c4f8d17d0c68..5e7d332731e0 100644 --- a/drivers/dma/qcom/bam_dma.c +++ b/drivers/dma/qcom/bam_dma.c @@ -74,7 +74,7 @@ struct bam_async_desc { struct list_head desc_node; enum dma_transfer_direction dir; size_t length; - struct bam_desc_hw desc[]; + struct bam_desc_hw desc[] __counted_by(num_desc); }; enum bam_reg { |