summaryrefslogtreecommitdiff
path: root/drivers/leds
diff options
context:
space:
mode:
authorKees Cook <keescook@chromium.org>2023-09-15 13:09:39 -0700
committerLee Jones <lee@kernel.org>2023-11-01 11:28:25 +0000
commitff861ca9f2d54a81d10cd3e8d2384fe17c10fdc4 (patch)
treef07214090f00826a74b230288b51035576dacdfa /drivers/leds
parenta09af0551f5cfa850ca4d39be4395bb3526c8bdf (diff)
leds: aw200xx: Annotate struct aw200xx 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 aw200xx. [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/20230915200938.never.767-kees@kernel.org Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'drivers/leds')
-rw-r--r--drivers/leds/leds-aw200xx.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/leds/leds-aw200xx.c b/drivers/leds/leds-aw200xx.c
index 691a743cc9b0..4d517cace3e7 100644
--- a/drivers/leds/leds-aw200xx.c
+++ b/drivers/leds/leds-aw200xx.c
@@ -112,7 +112,7 @@ struct aw200xx {
struct mutex mutex;
u32 num_leds;
u32 display_rows;
- struct aw200xx_led leds[];
+ struct aw200xx_led leds[] __counted_by(num_leds);
};
static ssize_t dim_show(struct device *dev, struct device_attribute *devattr,