BUG: warning at kernel/softirq.c:141/local_bh_enable()
 <c012406a> local_bh_enable+0x8a/0x90  <f89c5149> destroy_conntrack+0xc9/0x140 [ip_conntrack]
 <c03e351d> __kfree_skb+0x7d/0xf0  <c03e346e> kfree_skbmem+0x5e/0x90
 <c03f57d5> zap_completion_queue+0x75/0x80  <c03f57f7> find_skb+0x17/0xe0
 <c03f5a30> netpoll_send_udp+0x40/0x230  <f897b040> write_msg+0x40/0x50 [netconsole]
 <c011ec67> __call_console_drivers+0x57/0x60  <c011ed7d> call_console_drivers+0x7d/0x120
 <c011f2c1> release_console_sem+0x51/0xd0  <c011f0fb> vprintk+0x1ab/0x290
 <f89c5233> __ip_conntrack_find+0x13/0xe0 [ip_conntrack]  <f89c57b1> ip_conntrack_tuple_taken+0x31/0x40 [ip_conntrack]
 <f899119b> ip_nat_used_tuple+0x2b/0x40 [ip_nat]  <c011ef47> printk+0x17/0x20
 <f8a26b30> ipt_log_packet+0x90/0x130 [ipt_LOG]  <f8a26c82> ipt_log_target+0xb2/0xc0 [ipt_LOG]
 <f8a26bd0> ipt_log_target+0x0/0xc0 [ipt_LOG]  <f8971303> ipt_do_table+0x2d3/0x350 [ip_tables]
 <c0403a00> ip_forward_finish+0x0/0x80  <f8931037> ipt_hook+0x37/0x40 [iptable_filter]
 <c03fb9ef> nf_iterate+0x6f/0x90  <c0403a00> ip_forward_finish+0x0/0x80
 <c0403a00> ip_forward_finish+0x0/0x80  <c03fba85> nf_hook_slow+0x75/0x110
 <c0403a00> ip_forward_finish+0x0/0x80  <c04038f4> ip_forward+0x1f4/0x300
 <c0403a00> ip_forward_finish+0x0/0x80  <c0401de4> ip_rcv+0x244/0x530
 <c04022d0> ip_rcv_finish+0x0/0x2f0  <f89db572> e1000_clean_tx_irq+0xe2/0x250 [e1000]
 <c03e9589> netif_receive_skb+0x209/0x2b0  <c03e96b2> process_backlog+0x82/0x110
 <c03e97f3> net_rx_action+0xb3/0x1c0  <c0123f85> __do_softirq+0xc5/0xe0
 <c0123fd2> do_softirq+0x32/0x40  <c01240ae> irq_exit+0x3e/0x40
 <c01058de> do_IRQ+0x1e/0x30  <c01039fe> common_interrupt+0x1a/0x20
 <c0100da3> default_idle+0x33/0x60  <c0100e62> cpu_idle+0x72/0x90
 <c0602934> start_kernel+0x194/0x1d0  <c0602300> unknown_bootoption+0x0/0x1b0