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 <[email protected]> Cc: Liam Girdwood <[email protected]> Cc: Mark Brown <[email protected]> Signed-off-by: Kees Cook <[email protected]> --- 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 */ -- 2.34.1
