diff options
| author | Kees Cook <keescook@chromium.org> | 2023-08-18 02:58:42 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-09-28 14:12:14 +0300 |
| commit | 7d4b82185521538eab8b0532b9bd7b8c8ca3e63b (patch) | |
| tree | 9357f7c506db5fd71f28272ea299f5df329d2393 /drivers/dma | |
| parent | f1bc0d01cb349da43d55548b57c915ef8fe024c7 (diff) | |
| download | linux-7d4b82185521538eab8b0532b9bd7b8c8ca3e63b.tar.xz | |
dmaengine: hisilicon: Annotate struct hisi_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 hisi_dma_dev.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Zhou Wang <wangzhou1@hisilicon.com>
Cc: Jie Hai <haijie1@huawei.com>
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/20230817235859.49846-5-keescook@chromium.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/hisi_dma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/hisi_dma.c b/drivers/dma/hisi_dma.c index c1350a36fddd..4c47bff81064 100644 --- a/drivers/dma/hisi_dma.c +++ b/drivers/dma/hisi_dma.c @@ -163,7 +163,7 @@ struct hisi_dma_dev { u32 chan_depth; enum hisi_dma_reg_layout reg_layout; void __iomem *queue_base; /* queue region start of register */ - struct hisi_dma_chan chan[]; + struct hisi_dma_chan chan[] __counted_by(chan_num); }; #ifdef CONFIG_DEBUG_FS |