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pinctrl: uniphier: Annotate struct uniphier_pinctrl_reg_region with __counted_by

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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 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: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175006.work.421-kees@kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Kees Cook 2023-09-22 10:50:06 -07:00 committed by Linus Walleij
parent 07113fea91
commit e8b4ff6a85
1 changed files with 1 additions and 1 deletions
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2
drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
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@ -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 {