From: Kees Cook Date: Fri, 22 Sep 2023 17:50:06 +0000 (-0700) Subject: pinctrl: uniphier: Annotate struct uniphier_pinctrl_reg_region with __counted_by X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e8b4ff6a856d02ee64a6023edf45e11827badeef;p=linux.git 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 Cc: Kunihiko Hayashi Cc: Masami Hiramatsu Cc: linux-gpio@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Kees Cook Reviewed-by: "Gustavo A. R. Silva" Link: https://lore.kernel.org/r/20230922175006.work.421-kees@kernel.org Signed-off-by: Linus Walleij --- diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c index 18d3a4f69e639..fbd0fcdb42c8d 100644 --- a/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c +++ b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c @@ -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 {