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 da9062_regulators. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Support Opensource <support.opensou...@diasemi.com> Cc: Liam Girdwood <lgirdw...@gmail.com> Cc: Mark Brown <broo...@kernel.org> Signed-off-by: Kees Cook <keesc...@chromium.org> --- drivers/regulator/da9062-regulator.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/da9062-regulator.c b/drivers/regulator/da9062-regulator.c index 1d354db0c1bd..e0c96f10e570 100644 --- a/drivers/regulator/da9062-regulator.c +++ b/drivers/regulator/da9062-regulator.c @@ -73,7 +73,7 @@ struct da9062_regulators { int irq_ldo_lim; unsigned n_regulators; /* Array size to be defined during init. Keep at end. */ - struct da9062_regulator regulator[]; + struct da9062_regulator regulator[] __counted_by(n_regulators); }; /* Regulator operations */ -- 2.34.1
