Commit e8b4ff6a authored by Kees Cook's avatar Kees Cook Committed by Linus Walleij
Browse files

pinctrl: uniphier: Annotate struct uniphier_pinctrl_reg_region 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 uniphier_pinctrl_reg_region.

[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci



Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: linux-gpio@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: default avatarKees Cook <keescook@chromium.org>
Reviewed-by: default avatar"Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175006.work.421-kees@kernel.org


Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 07113fea

drivers/pinctrl/uniphier/pinctrl-uniphier-core.c

+1 −1
Original line number Diff line number Diff line
@@ -31,7 +31,7 @@ struct uniphier_pinctrl_reg_region { 
	struct list_head node;

	unsigned int base;

	unsigned int nregs;

	u32 vals[];

	u32 vals[] __counted_by(nregs);

};



struct uniphier_pinctrl_priv {