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| author | Kees Cook <keescook@chromium.org> | 2023-09-30 09:19:13 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2023-09-30 09:24:16 -0700 |
| commit | 21d7ec79ef5b1c23495dd88e5679c1a1d6dd17ae (patch) | |
| tree | 7c3da4c353f682d03c1f0e95fdd0793fa01133da | |
| parent | 8927e688e9e0ae625af6a917bace8cc9cac55677 (diff) | |
| download | input-21d7ec79ef5b1c23495dd88e5679c1a1d6dd17ae.tar.gz | |
Input: leds - annotate struct input_leds 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 input_leds.
[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/20230922175031.work.467-kees@kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| -rw-r--r-- | drivers/input/input-leds.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/input/input-leds.c b/drivers/input/input-leds.c index 0b11990ade4650..0e935914bc3aa1 100644 --- a/drivers/input/input-leds.c +++ b/drivers/input/input-leds.c @@ -44,7 +44,7 @@ struct input_led { struct input_leds { struct input_handle handle; unsigned int num_leds; - struct input_led leds[]; + struct input_led leds[] __counted_by(num_leds); }; static enum led_brightness input_leds_brightness_get(struct led_classdev *cdev) |