Messages in this thread Patch in this message | | | From | Kees Cook <> | Subject | [PATCH] regulator: da9063: Annotate struct da9063_regulators with __counted_by | Date | Fri, 22 Sep 2023 10:52:07 -0700 |
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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> --- 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
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