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| author | Kees Cook <keescook@chromium.org> | 2023-08-17 16:58:48 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2023-09-22 10:11:38 -0700 |
| commit | 712f5350da83b021930ee4ff010246963c2a56ef (patch) | |
| tree | 20fcd4502b307d0f760fd3cc8d48f8f048e02b33 | |
| parent | 953812391b585844ab84f88af53f80e2dbf41706 (diff) | |
| download | linux-712f5350da83b021930ee4ff010246963c2a56ef.tar.gz linux-712f5350da83b021930ee4ff010246963c2a56ef.tar.xz | |
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
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230817235859.49846-11-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
| -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 fa15b97a3bab..f296412e96b6 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 { |