From e3c9d952139c1eb42f35bdcdcb85a66a72587b34 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 15 Sep 2023 13:10:52 -0700 Subject: leds: mt6370: Annotate struct mt6370_priv 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 mt6370_priv. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20230915201051.never.429-kees@kernel.org Signed-off-by: Lee Jones --- drivers/leds/flash/leds-mt6370-flash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/leds/flash') diff --git a/drivers/leds/flash/leds-mt6370-flash.c b/drivers/leds/flash/leds-mt6370-flash.c index 931067c8a75f..912d9d622320 100644 --- a/drivers/leds/flash/leds-mt6370-flash.c +++ b/drivers/leds/flash/leds-mt6370-flash.c @@ -81,7 +81,7 @@ struct mt6370_priv { unsigned int fled_torch_used; unsigned int leds_active; unsigned int leds_count; - struct mt6370_led leds[]; + struct mt6370_led leds[] __counted_by(leds_count); }; static int mt6370_torch_brightness_set(struct led_classdev *lcdev, enum led_brightness level) -- cgit