diff options
| -rw-r--r-- | net/ipv4/devinet.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 7592f242336b..364dbf0cd9bf 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -224,6 +224,7 @@ static struct in_ifaddr *inet_alloc_ifa(void) static void inet_rcu_free_ifa(struct rcu_head *head) { struct in_ifaddr *ifa = container_of(head, struct in_ifaddr, rcu_head); + if (ifa->ifa_dev) in_dev_put(ifa->ifa_dev); kfree(ifa); @@ -231,7 +232,11 @@ static void inet_rcu_free_ifa(struct rcu_head *head) static void inet_free_ifa(struct in_ifaddr *ifa) { - call_rcu(&ifa->rcu_head, inet_rcu_free_ifa); + /* Our reference to ifa->ifa_dev must be freed ASAP + * to release the reference to the netdev the same way. + * in_dev_put() -> in_dev_finish_destroy() -> netdev_put() + */ + call_rcu_hurry(&ifa->rcu_head, inet_rcu_free_ifa); } static void in_dev_free_rcu(struct rcu_head *head) |