diff options
Diffstat (limited to 'net/netfilter/nf_tables_api.c')
-rw-r--r-- | net/netfilter/nf_tables_api.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index ebfcfe1dcbdb..29ff59dd99ac 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -1142,6 +1142,9 @@ static int nft_dump_stats(struct sk_buff *skb, struct nft_stats __percpu *stats) u64 pkts, bytes; int cpu; + if (!stats) + return 0; + memset(&total, 0, sizeof(total)); for_each_possible_cpu(cpu) { cpu_stats = per_cpu_ptr(stats, cpu); @@ -1199,6 +1202,7 @@ static int nf_tables_fill_chain_info(struct sk_buff *skb, struct net *net, if (nft_is_base_chain(chain)) { const struct nft_base_chain *basechain = nft_base_chain(chain); const struct nf_hook_ops *ops = &basechain->ops; + struct nft_stats __percpu *stats; struct nlattr *nest; nest = nla_nest_start(skb, NFTA_CHAIN_HOOK); @@ -1220,8 +1224,9 @@ static int nf_tables_fill_chain_info(struct sk_buff *skb, struct net *net, if (nla_put_string(skb, NFTA_CHAIN_TYPE, basechain->type->name)) goto nla_put_failure; - if (rcu_access_pointer(basechain->stats) && - nft_dump_stats(skb, rcu_dereference(basechain->stats))) + stats = rcu_dereference_check(basechain->stats, + lockdep_commit_lock_is_held(net)); + if (nft_dump_stats(skb, stats)) goto nla_put_failure; } |