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| author | Kees Cook <keescook@chromium.org> | 2023-08-18 01:58:57 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-09-28 13:12:15 +0200 |
| commit | 7935de861aed45f97a4262d9b215d9feb172516b (patch) | |
| tree | a8ccc67b529e64e781ab13f8d4f42bda51170cfe /drivers/dma | |
| parent | dmaengine: uniphier-xdmac: Annotate struct uniphier_xdmac_desc with __counted_by (diff) | |
| download | linux-7935de861aed45f97a4262d9b215d9feb172516b.tar.xz linux-7935de861aed45f97a4262d9b215d9feb172516b.zip | |
dmaengine: uniphier-xdmac: Annotate struct uniphier_xdmac_device 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 uniphier_xdmac_device.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: dmaengine@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230817235859.49846-20-keescook@chromium.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/uniphier-xdmac.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/uniphier-xdmac.c b/drivers/dma/uniphier-xdmac.c index dd51522879a7..3a8ee2b173b5 100644 --- a/drivers/dma/uniphier-xdmac.c +++ b/drivers/dma/uniphier-xdmac.c @@ -97,7 +97,7 @@ struct uniphier_xdmac_device { struct dma_device ddev; void __iomem *reg_base; int nr_chans; - struct uniphier_xdmac_chan channels[]; + struct uniphier_xdmac_chan channels[] __counted_by(nr_chans); }; static struct uniphier_xdmac_chan * |