diff options
| -rw-r--r-- | net/ipv6/route.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 9658939511e0..08bd68f1b5bb 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -4019,6 +4019,7 @@ static int __ip6_del_rt_siblings(struct fib6_info *rt, struct fib6_config *cfg) struct net *net = info->nl_net; struct sk_buff *skb = NULL; struct fib6_table *table; + struct fib6_node *fn; int err = -ENOENT; if (rt == net->ipv6.fib6_null_entry) @@ -4026,9 +4027,13 @@ static int __ip6_del_rt_siblings(struct fib6_info *rt, struct fib6_config *cfg) table = rt->fib6_table; spin_lock_bh(&table->tb6_lock); + fn = rcu_dereference_protected(rt->fib6_node, + lockdep_is_held(&table->tb6_lock)); + if (!fn) + goto out_unlock; + if (rt->fib6_nsiblings && cfg->fc_delete_all_nh) { struct fib6_info *sibling, *next_sibling; - struct fib6_node *fn; /* prefer to send a single notification with all hops */ skb = nlmsg_new(rt6_nlmsg_size(rt), GFP_ATOMIC); @@ -4051,8 +4056,6 @@ static int __ip6_del_rt_siblings(struct fib6_info *rt, struct fib6_config *cfg) * and emit a replace or delete notification, respectively. */ info->skip_notify_kernel = 1; - fn = rcu_dereference_protected(rt->fib6_node, - lockdep_is_held(&table->tb6_lock)); if (rcu_access_pointer(fn->leaf) == rt) { struct fib6_info *last_sibling, *replace_rt; |