lbutils, rand: err on zero return (fatal)

Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-07-11 05:52:36 +02:00 · 2026-03-25 19:51:46 +00:00
parent bce1099509
commit 34f26319d7
1 changed files with 3 additions and 0 deletions
@@ -70,6 +70,9 @@ retry_rand:
 		goto err; /* possibly unsupported by kernel */
 	}

+	if (rc == 0)
+		goto err; /* prevent infinite loop on fatal err */
+
 	if ((off += (size_t)rc) < n)
 		goto retry_rand;