Commit 36471012 authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller

tcp: must free metrics at net dismantle

We currently leak all tcp metrics at struct net dismantle time.

tcp_net_metrics_exit() frees the hash table, we must first
iterate it to free all metrics.
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f5addb91
...@@ -731,6 +731,18 @@ static int __net_init tcp_net_metrics_init(struct net *net) ...@@ -731,6 +731,18 @@ static int __net_init tcp_net_metrics_init(struct net *net)
static void __net_exit tcp_net_metrics_exit(struct net *net) static void __net_exit tcp_net_metrics_exit(struct net *net)
{ {
unsigned int i;
for (i = 0; i < (1U << net->ipv4.tcp_metrics_hash_log) ; i++) {
struct tcp_metrics_block *tm, *next;
tm = rcu_dereference_protected(net->ipv4.tcp_metrics_hash[i].chain, 1);
while (tm) {
next = rcu_dereference_protected(tm->tcpm_next, 1);
kfree(tm);
tm = next;
}
}
kfree(net->ipv4.tcp_metrics_hash); kfree(net->ipv4.tcp_metrics_hash);
} }
......
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