On 9/22/23 11:50, Kees Cook wrote:
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 <[email protected]>
Cc: Kunihiko Hayashi <[email protected]>
Cc: Masami Hiramatsu <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Kees Cook <[email protected]>
Reviewed-by: Gustavo A. R. Silva <[email protected]>
Thanks
--
Gustavo
---
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 {
