--- zzzz-none-000/linux-4.9.279/net/ipv4/devinet.c	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/net/ipv4/devinet.c	2023-02-08 11:43:43.000000000 +0000
@@ -2406,10 +2406,18 @@
 	unregister_net_sysctl_table(net->ipv4.forw_hdr);
 	__devinet_sysctl_unregister(net->ipv4.devconf_dflt);
 	__devinet_sysctl_unregister(net->ipv4.devconf_all);
-	kfree(tbl);
+
+	if (!net_eq(net, &init_net)) {
+		kfree(tbl);
+		kfree(net->ipv4.devconf_dflt);
+		kfree(net->ipv4.devconf_all);
+	}
+#else
+	if (!net_eq(net, &init_net)) {
+		kfree(net->ipv4.devconf_dflt);
+		kfree(net->ipv4.devconf_all);
+	}
 #endif
-	kfree(net->ipv4.devconf_dflt);
-	kfree(net->ipv4.devconf_all);
 }
 
 static __net_initdata struct pernet_operations devinet_ops = {