diff options
| author | Kees Cook | 2023-09-15 13:10:04 -0700 |
|---|---|---|
| committer | Lee Jones | 2023-11-01 11:28:29 +0000 |
| commit | 52cd75108a426bdd43161d0e73e7bee95d103ed1 (patch) | |
| tree | 10102040df4e8faf4cdb79b4a6189f6bd8ea8a18 /drivers/leds | |
| parent | a29feca113687cc691fe9f0f23652fafbafddc90 (diff) | |
leds: gpio: Annotate struct gpio_leds_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 gpio_leds_priv.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230915201003.never.148-kees@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/leds-gpio.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c index 7bfe40a6bfdd..a6597f0f3eb4 100644 --- a/drivers/leds/leds-gpio.c +++ b/drivers/leds/leds-gpio.c @@ -142,7 +142,7 @@ static int create_gpio_led(const struct gpio_led *template, struct gpio_leds_priv { int num_leds; - struct gpio_led_data leds[]; + struct gpio_led_data leds[] __counted_by(num_leds); }; static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev) |