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| author | Kees Cook <keescook@chromium.org> | 2023-08-17 16:58:47 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-09-28 16:42:14 +0530 |
| commit | 8360c11aef5775745fc10438e24db95ab2329b1d (patch) | |
| tree | e85da427fc8694db2810d70eaa3f083a4eed8cde /drivers/dma | |
| parent | 1539a22e144106eefc0ef05e7b91f68ad20a71ad (diff) | |
| download | linux-8360c11aef5775745fc10438e24db95ab2329b1d.tar.gz | |
dmaengine: sprd: Annotate struct sprd_dma_dev 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 sprd_dma_dev.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Orson Zhai <orsonzhai@gmail.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Chunyan Zhang <zhang.lyra@gmail.com>
Cc: dmaengine@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Chunyan Zhang <zhang.lyra@gmail.com>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230817235859.49846-10-keescook@chromium.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/sprd-dma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c index 97e3dedb6c12b..0064a5f4f0cbc 100644 --- a/drivers/dma/sprd-dma.c +++ b/drivers/dma/sprd-dma.c @@ -212,7 +212,7 @@ struct sprd_dma_dev { struct clk *ashb_clk; int irq; u32 total_chns; - struct sprd_dma_chn channels[]; + struct sprd_dma_chn channels[] __counted_by(total_chns); }; static void sprd_dma_free_desc(struct virt_dma_desc *vd); |