diff options
| author | Kees Cook <keescook@chromium.org> | 2023-08-17 16:58:38 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-09-28 16:42:02 +0530 |
| commit | 83c5d35bf9112577da097c1b4fbfedef93b951e6 (patch) | |
| tree | 6c69b82fc12f6ae70ce6acc50bea575c521d4e54 /drivers/dma | |
| parent | 65b87548041ad70a8e26af08c0dda0b5893baf6b (diff) | |
| download | linux-83c5d35bf9112577da097c1b4fbfedef93b951e6.tar.gz | |
dmaengine: apple-admac: Annotate struct admac_data 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 admac_data.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Hector Martin <marcan@marcan.st>
Cc: Sven Peter <sven@svenpeter.dev>
Cc: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Cc: asahi@lists.linux.dev
Cc: linux-arm-kernel@lists.infradead.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/20230817235859.49846-1-keescook@chromium.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/apple-admac.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/apple-admac.c b/drivers/dma/apple-admac.c index 46bb02858561a..5b63996640d9d 100644 --- a/drivers/dma/apple-admac.c +++ b/drivers/dma/apple-admac.c @@ -128,7 +128,7 @@ struct admac_data { int irq; int irq_index; int nchannels; - struct admac_chan channels[]; + struct admac_chan channels[] __counted_by(nchannels); }; struct admac_tx { |