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authorEric Dumazet <dada1@cosmosbay.com>2009-04-02 00:53:49 -0700
committerDavid S. Miller <davem@davemloft.net>2009-04-02 00:54:43 -0700
commitfa9a86ddc8ecd2830a5e773facc250f110300ae7 (patch)
treefb7120974ec38932aa909403c2598cbd01353b35 /net/ipv6
parent8cbd9606a6367c221a7bbcc47f3ab1a8c31b6437 (diff)
netfilter: use rcu_read_bh() in ipt_do_table()
Commit 784544739a25c30637397ace5489eeb6e15d7d49 (netfilter: iptables: lock free counters) forgot to disable BH in arpt_do_table(), ipt_do_table() and ip6t_do_table() Use rcu_read_lock_bh() instead of rcu_read_lock() cures the problem. Reported-and-bisected-by: Roman Mindalev <r000n@r000n.net> Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Acked-by: Patrick McHardy <kaber@trash.net> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/netfilter/ip6_tables.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index e89cfa3a8f2..dfed176aed3 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -365,7 +365,7 @@ ip6t_do_table(struct sk_buff *skb,
IP_NF_ASSERT(table->valid_hooks & (1 << hook));
- rcu_read_lock();
+ rcu_read_lock_bh();
private = rcu_dereference(table->private);
table_base = rcu_dereference(private->entries[smp_processor_id()]);
@@ -466,7 +466,7 @@ ip6t_do_table(struct sk_buff *skb,
#ifdef CONFIG_NETFILTER_DEBUG
((struct ip6t_entry *)table_base)->comefrom = NETFILTER_LINK_POISON;
#endif
- rcu_read_unlock();
+ rcu_read_unlock_bh();
#ifdef DEBUG_ALLOW_ALL
return NF_ACCEPT;