[PATCH] keys: Annotate struct asymmetric_key_id with __counted_by

[Thorsten Blum <thorsten.blum@linux.dev>]

Add the __counted_by() compiler attribute to the flexible array member
'data' to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
 include/keys/asymmetric-type.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/keys/asymmetric-type.h b/include/keys/asymmetric-type.h
index 69a13e1e5b2e..1b91c8f98688 100644
--- a/include/keys/asymmetric-type.h
+++ b/include/keys/asymmetric-type.h
@@ -49,7 +49,7 @@ enum asymmetric_payload_bits {
  */
 struct asymmetric_key_id {
 	unsigned short	len;
-	unsigned char	data[];
+	unsigned char	data[] __counted_by(len);
 };
 
 struct asymmetric_key_ids {
-- 
2.51.0