[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20230922175006.work.421-kees@kernel.org>
Date: Fri, 22 Sep 2023 10:50:06 -0700
From: Kees Cook <keescook@...omium.org>
To: Linus Walleij <linus.walleij@...aro.org>
Cc: Kees Cook <keescook@...omium.org>,
Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
Masami Hiramatsu <mhiramat@...nel.org>,
linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
Nathan Chancellor <nathan@...nel.org>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Tom Rix <trix@...hat.com>, linux-kernel@...r.kernel.org,
llvm@...ts.linux.dev, linux-hardening@...r.kernel.org
Subject: [PATCH] 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@...aro.org>
Cc: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
Cc: Masami Hiramatsu <mhiramat@...nel.org>
Cc: linux-gpio@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org
Signed-off-by: Kees Cook <keescook@...omium.org>
---
drivers/pinctrl/uniphier/pinctrl-uniphier-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
index 18d3a4f69e63..fbd0fcdb42c8 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 {
--
2.34.1
Powered by blists - more mailing lists