smb: Annotate struct xattr_smb_acl with __counted_by()

Add the __counted_by compiler attribute to the flexible array member entries to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE. Signed-off-by: Thorsten Blum <[email protected]> Acked-by: Namjae Jeon <[email protected]> Signed-off-by: Steve French <[email protected]>
sched-ext · Aug 30, 2024 · 8d8d244 · 8d8d244
1 parent 780bdc1
commit 8d8d244
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fs/smb/server/xattr.h b/fs/smb/server/xattr.h
@@ -76,7 +76,7 @@ struct xattr_acl_entry {
 struct xattr_smb_acl {
 	int count;
 	int next;
-	struct xattr_acl_entry entries[];
+	struct xattr_acl_entry entries[] __counted_by(count);
 };
 
 /* 64bytes hash in xattr_ntacl is computed with sha256 */