kernel panis in nf_nat_setup_info() with a message "kernel BUG at net/ipv4/netfilter/nf_nat_core.c:306!"

Issue

• kernel panis in nf_nat_setup_info() with a message "kernel BUG at net/ipv4/netfilter/nf_nat_core.c:306!"

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kernel BUG at net/ipv4/netfilter/nf_nat_core.c:306!
invalid opcode: 0000 [#1] SMP 
last sysfs file: /sys/devices/pci0000:00/0000:00:01.2/usb1/speed
CPU 1 
Modules linked in: bridge stp llc dsa_filter(P)(U) iptable_nat nf_nat nfsd exportfs nfs lockd fscache auth_rpcgss nfs_acl sunrpc ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 microcode virtio_balloon virtio_net i2c_piix4 i2c_core sg ext4 jbd2 mbcache virtio_blk sr_mod cdrom virtio_pci virtio_ring virtio pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod [last unloaded: dsa_filter]

Pid: 17665, comm: php Tainted: P           ---------------    2.6.32-358.18.1.el6.x86_64 #1 Red Hat KVM
RIP: 0010:[]  [] nf_nat_setup_info+0x644/0x670 [nf_nat]
RSP: 0018:ffff8802191238f8  EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff8802191605c0 RCX: 0000000000000000
RDX: ffffffff81b165c0 RSI: ffff8802191239d8 RDI: ffff8802191605c0
RBP: ffff8802191239c8 R08: ffffffffa01bad38 R09: 0000000000000002
R10: ffff8802179e6108 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8802191239d8 R14: 0000000000000000 R15: 0000000000000002
FS:  00007f7b29b2c7c0(0000) GS:ffff880028280000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7b29b2b000 CR3: 0000000219029000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process php (pid: 17665, threadinfo ffff880219122000, task ffff88021b1b1500)
Stack:
 ffff8802191605c4 ffffffff81b165c0 ffff88021868b0e9 ffff88021b657020
 0000000000000004 ffff8802179e6000 0000000400000000 ffff880217830cc0
 ffffffffa01bad38 ffff88021b657020 0000000000000000 0000000100000000
Call Trace:
 [] alloc_null_binding+0x5b/0xa0 [iptable_nat]
 [] nf_nat_rule_find+0x5c/0x80 [iptable_nat]
 [] nf_nat_fn+0x111/0x260 [iptable_nat]
 [] nf_nat_out+0x48/0xd0 [iptable_nat]
 [] nf_iterate+0x69/0xb0
 [] ? ip_finish_output+0x0/0x310
 [] nf_hook_slow+0x74/0x110
 [] ? ip_finish_output+0x0/0x310
 [] ? dst_output+0x0/0x20
 [] ip_output+0xa4/0xc0
 [] ? __ip_local_out+0x9f/0xb0
 [] ip_local_out+0x25/0x30
 [] ip_queue_xmit+0x190/0x420
 [] tcp_transmit_skb+0x40e/0x7b0
 [] ? ksize+0x19/0x80
 [] tcp_connect+0x375/0x490
 [] tcp_v4_connect+0x46e/0x570
 [] inet_stream_connect+0x272/0x2c0
 [] sys_connect+0xd7/0xf0
 [] ? fd_install+0x47/0x90
 [] ? audit_syscall_entry+0x1d7/0x200
 [] ? __audit_syscall_exit+0x265/0x290
 [] system_call_fastpath+0x16/0x1b
Code: 22 c6 e1 01 75 29 48 89 de 4c 89 f7 e8 76 f9 ff ff 85 c0 0f 84 88 fb ff ff 0f b6 4d c6 41 8b 45 00 e9 6d fa ff ff e8 bc a4 cf e0 <0f> 0b eb fe f6 05 ef 21 c6 e1 80 74 ce 80 3d ff 2d 00 00 00 74 
RIP  [] nf_nat_setup_info+0x644/0x670 [nf_nat]
 RSP