diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-15 13:10:52 -0700 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2023-11-01 11:28:41 +0000 |
| commit | e3c9d952139c1eb42f35bdcdcb85a66a72587b34 (patch) | |
| tree | fa81c2a1bd23b346c447037bb87df24eea573245 /drivers/leds | |
| parent | 476301c15d44831413b94d54f248233b14c0ad85 (diff) | |
leds: mt6370: Annotate struct mt6370_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 mt6370_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>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230915201051.never.429-kees@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/flash/leds-mt6370-flash.c | 2 | ||||
| -rw-r--r-- | drivers/leds/rgb/leds-mt6370-rgb.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/leds/flash/leds-mt6370-flash.c b/drivers/leds/flash/leds-mt6370-flash.c index 931067c8a75f..912d9d622320 100644 --- a/drivers/leds/flash/leds-mt6370-flash.c +++ b/drivers/leds/flash/leds-mt6370-flash.c @@ -81,7 +81,7 @@ struct mt6370_priv { unsigned int fled_torch_used; unsigned int leds_active; unsigned int leds_count; - struct mt6370_led leds[]; + struct mt6370_led leds[] __counted_by(leds_count); }; static int mt6370_torch_brightness_set(struct led_classdev *lcdev, enum led_brightness level) diff --git a/drivers/leds/rgb/leds-mt6370-rgb.c b/drivers/leds/rgb/leds-mt6370-rgb.c index bb62431efe83..448d0da11848 100644 --- a/drivers/leds/rgb/leds-mt6370-rgb.c +++ b/drivers/leds/rgb/leds-mt6370-rgb.c @@ -153,7 +153,7 @@ struct mt6370_priv { const struct mt6370_pdata *pdata; unsigned int leds_count; unsigned int leds_active; - struct mt6370_led leds[]; + struct mt6370_led leds[] __counted_by(leds_count); }; static const struct reg_field common_reg_fields[F_MAX_FIELDS] = { |