Unverified Commit 1096f9fa authored Sep 22, 2023 by Kees Cook Committed by Mark Brown Oct 10, 2023

regulator: da9063: Annotate struct da9063_regulators 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 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>
Link: https://lore.kernel.org/r/20230922175207.work.576-kees@kernel.org


Signed-off-by: Mark Brown <broonie@kernel.org>

parent 907f2a48

drivers/regulator/da9063-regulator.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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 */