Commit a29feca1 authored by Kees Cook's avatar Kees Cook Committed by Lee Jones
Browse files

leds: el15203000: Annotate struct el15203000 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 el15203000.

[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci



Signed-off-by: default avatarKees Cook <keescook@chromium.org>
Reviewed-by: default avatarGustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230915200955.never.871-kees@kernel.org


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent 679cec18

drivers/leds/leds-el15203000.c

+1 −1
Original line number Diff line number Diff line
@@ -80,7 +80,7 @@ struct el15203000 { 
	struct spi_device	*spi;

	unsigned long		delay;

	size_t			count;

	struct el15203000_led	leds[];

	struct el15203000_led	leds[] __counted_by(count);

};



#define to_el15203000_led(d)	container_of(d, struct el15203000_led, ldev)