[PATCH v2 1/2] USB: serial: garmin_gps: annotate struct garmin_packet with __counted_by

Javier Carrasco
2024-06-19T19:43:01Z

Use the __counted_by compiler attribute for the data[] flexible array
member to improve the results of array bound sanitizers.

Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
---
drivers/usb/serial/garmin_gps.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c
index 670e942fdaaa..57df6ad183ff 100644
--- a/drivers/usb/serial/garmin_gps.c
+++ b/drivers/usb/serial/garmin_gps.c
@@ -104,7 +104,7 @@ struct garmin_packet {
int seq;
/* the real size of the data array, always > 0 */
int size;
- __u8 data[];
+ __u8 data[] __counted_by(size);
};

/* structure used to keep the current state of the driver */

--
2.40.1