==========
shellcheck - FAILED


 ====== Checking before the patch ======
 ====== Checking the tree with the patch ======
tools/testing/selftests/net/rtnetlink_notification.sh is a new file, but not shellcheck compliant
New errors added
--- /tmp/tmp.uXsmO2kCl5	2025-06-13 22:54:41.988108935 -0700
+++ /tmp/tmp.4JDrxTVyVD	2025-06-13 22:54:42.657104252 -0700
@@ -0,0 +1,34 @@
+
+In rtnetlink_notification.sh line 26:
+	ip monitor maddr > $tmpfile &
+                           ^------^ SC2086 (info): Double quote to prevent globbing and word splitting.
+
+Did you mean: 
+	ip monitor maddr > "$tmpfile" &
+
+
+In rtnetlink_notification.sh line 35:
+		return $RET
+                       ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.
+
+Did you mean: 
+		return "$RET"
+
+
+In rtnetlink_notification.sh line 56:
+	return $RET
+               ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.
+
+Did you mean: 
+	return "$RET"
+
+
+In rtnetlink_notification.sh line 70:
+exit $EXIT_STATUS
+     ^----------^ SC2086 (info): Double quote to prevent globbing and word splitting.
+
+Did you mean: 
+exit "$EXIT_STATUS"
+
+For more information:
+  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...