diff options
| author | Kees Cook <keescook@chromium.org> | 2023-08-17 16:58:48 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-09-28 16:42:14 +0530 |
| commit | 8279f0b476f37c51de2ed8bd70d770b2893dd2fa (patch) | |
| tree | 9b3aeebda5018109dd1f2a2bc3633f82702e675e /drivers/dma | |
| parent | 8360c11aef5775745fc10438e24db95ab2329b1d (diff) | |
| download | linux-8279f0b476f37c51de2ed8bd70d770b2893dd2fa.tar.gz | |
dmaengine: st_fdma: Annotate struct st_fdma_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 st_fdma_desc.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
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/20230817235859.49846-11-keescook@chromium.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/st_fdma.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/st_fdma.h b/drivers/dma/st_fdma.h index fa15b97a3bab66..f296412e96b6a5 100644 --- a/drivers/dma/st_fdma.h +++ b/drivers/dma/st_fdma.h @@ -97,7 +97,7 @@ struct st_fdma_desc { struct st_fdma_chan *fchan; bool iscyclic; unsigned int n_nodes; - struct st_fdma_sw_node node[]; + struct st_fdma_sw_node node[] __counted_by(n_nodes); }; enum st_fdma_type { |