diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-15 13:09:39 -0700 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2023-11-01 11:28:25 +0000 |
| commit | ff861ca9f2d54a81d10cd3e8d2384fe17c10fdc4 (patch) | |
| tree | f07214090f00826a74b230288b51035576dacdfa /drivers/leds | |
| parent | a09af0551f5cfa850ca4d39be4395bb3526c8bdf (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.c | 2 |
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, |