lkml.org 
[lkml]   [2023]   [Sep]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH] regulator: da9063: Annotate struct da9063_regulators with __counted_by
From


On 9/22/23 11:52, Kees Cook wrote:
> 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 da9063_regulators.
>
> [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
>
> Cc: Support Opensource <support.opensource@diasemi.com>
> Cc: Liam Girdwood <lgirdwood@gmail.com>
> Cc: Mark Brown <broonie@kernel.org>
> Signed-off-by: Kees Cook <keescook@chromium.org>

Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>

Thanks
--
Gustavo

> ---
> drivers/regulator/da9063-regulator.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/regulator/da9063-regulator.c b/drivers/regulator/da9063-regulator.c
> index a0621665a6d2..82bf321ae06f 100644
> --- a/drivers/regulator/da9063-regulator.c
> +++ b/drivers/regulator/da9063-regulator.c
> @@ -158,7 +158,7 @@ struct da9063_regulator {
> struct da9063_regulators {
> unsigned int n_regulators;
> /* Array size to be defined during init. Keep at end. */
> - struct da9063_regulator regulator[];
> + struct da9063_regulator regulator[] __counted_by(n_regulators);
> };
>
> /* BUCK modes for DA9063 */

\
 
 \ /
  Last update: 2023-09-23 19:42    [W:0.073 / U:0.204 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site