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 cr0014114. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Pavel Machek <pavel@xxxxxx> Cc: Lee Jones <lee@xxxxxxxxxx> Cc: linux-leds@xxxxxxxxxxxxxxx Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> --- drivers/leds/leds-cr0014114.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/leds/leds-cr0014114.c b/drivers/leds/leds-cr0014114.c index b33bca397ea6..c9914fc51f20 100644 --- a/drivers/leds/leds-cr0014114.c +++ b/drivers/leds/leds-cr0014114.c @@ -56,7 +56,7 @@ struct cr0014114 { struct spi_device *spi; u8 *buf; unsigned long delay; - struct cr0014114_led leds[]; + struct cr0014114_led leds[] __counted_by(count); }; static void cr0014114_calc_crc(u8 *buf, const size_t len) -- 2.34.1
