diff options
| author | Kees Cook <[email protected]> | 2023-08-17 16:58:48 -0700 |
|---|---|---|
| committer | Vinod Koul <[email protected]> | 2023-09-28 16:42:14 +0530 |
| commit | 8279f0b476f37c51de2ed8bd70d770b2893dd2fa (patch) | |
| tree | 9b3aeebda5018109dd1f2a2bc3633f82702e675e | |
| parent | 8360c11aef5775745fc10438e24db95ab2329b1d (diff) | |
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 <[email protected]>
Cc: Patrice Chotard <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Kees Cook <[email protected]>
Reviewed-by: "Gustavo A. R. Silva" <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
| -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 { |