From: Kees Cook Date: Fri, 22 Sep 2023 17:52:07 +0000 (-0700) Subject: regulator: da9063: Annotate struct da9063_regulators with __counted_by X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1096f9fa2be18a1340d1299b4c4329af211076e7;p=linux.git 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 Cc: Liam Girdwood Cc: Mark Brown Signed-off-by: Kees Cook Reviewed-by: "Gustavo A. R. Silva" Link: https://lore.kernel.org/r/20230922175207.work.576-kees@kernel.org Signed-off-by: Mark Brown --- diff --git a/drivers/regulator/da9063-regulator.c b/drivers/regulator/da9063-regulator.c index a0621665a6d22..82bf321ae06f0 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 */