[PATCH] USB: serial: garmin_gps: annotate struct garmin_packet with __counted_by

[Javier Carrasco]

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

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx>
---
The size is assigned before the first reference to the flexible array
(see pkt_add()), which allows for a straightforward annotation without
further modifications.
---
 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 */

---
base-commit: 0c52056d9f77508cb6d4d68d3fc91c6c08ec71af
change-id: 20240619-garmin_gps_counted_by-376545960353

Best regards,
-- 
Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx>