diff options
Diffstat (limited to 'net/core/fib_notifier.c')
| -rw-r--r-- | net/core/fib_notifier.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/net/core/fib_notifier.c b/net/core/fib_notifier.c index 4fc202dbdfb6..0c048bdeb016 100644 --- a/net/core/fib_notifier.c +++ b/net/core/fib_notifier.c @@ -34,12 +34,14 @@ static unsigned int fib_seq_sum(void) rtnl_lock(); for_each_net(net) { - list_for_each_entry(ops, &net->fib_notifier_ops, list) { + rcu_read_lock(); + list_for_each_entry_rcu(ops, &net->fib_notifier_ops, list) { if (!try_module_get(ops->owner)) continue; fib_seq += ops->fib_seq_read(net); module_put(ops->owner); } + rcu_read_unlock(); } rtnl_unlock(); @@ -161,8 +163,14 @@ static int __net_init fib_notifier_net_init(struct net *net) return 0; } +static void __net_exit fib_notifier_net_exit(struct net *net) +{ + WARN_ON_ONCE(!list_empty(&net->fib_notifier_ops)); +} + static struct pernet_operations fib_notifier_net_ops = { .init = fib_notifier_net_init, + .exit = fib_notifier_net_exit, }; static int __init fib_notifier_init(void) |