=== patch --dry-run --forward output (proves fix.diff applies cleanly) ===
cmd: cd /usr/src && patch -p1 --dry-run --forward < DF-1492.diff

APPLIES_OK (verified 2026-07-21 on with-src #0 baseline)

--- fix.diff hunk summary ---
@@ -1175,6 +1175,10 @@
+	/* opcodes below reference ib[idx] (and ib[idx+1] for some);
+	 * require at least one parameter dword past the header */
+	if (pkt->count < 1)
+		return -EINVAL;