BUG: soft lockup - CPU#0 stuck for 22s! [kswapd0:31]
Modules linked in: ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp bridge stp llc ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables x_tables bnep rfcomm bluetooth nfsd auth_rpcgss nfs_acl nfs lockd sunrpc binfmt_misc fscache xfs dm_crypt tda1004x saa7134_dvb videobuf_dvb dvb_core saa7134_alsa rc_flydvb ir_kbd_i2c coretemp kvm_intel kvm gpio_ich ppdev nvidia(POF) dm_multipath scsi_dh tda827x tda8290 tuner snd_hda_codec_realtek saa7134 snd_hda_intel snd_hda_codec tveeprom snd_hwdep videobuf_dma_sg snd_pcm rc_core v4l2_common snd_page_alloc videobuf_core snd_seq_midi videodev snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device microcode snd_timer snd serio_raw lpc_ich soundcore mac_hid parport_pc lp parport btrfs xor raid6_pq libcrc32c dm_mirror dm_region_hash dm_log pata_acpi hid_generic usbhid hid e100 usb_storage r8169 mii pata_jmicron
CPU: 0 PID: 31 Comm: kswapd0 Tainted: PF          O 3.13.0-12-generic #32-Ubuntu
Hardware name: Gigabyte Technology Co., Ltd. P43-ES3G/P43-ES3G, BIOS F14 08/23/2010
task: f6d5db00 ti: f6f32000 task.ti: f6f32000
EIP: 0060:[<c10c6904>] EFLAGS: 00000206 CPU: 0
EIP is at css_next_child+0x4/0xb0
EAX: f61dce00 EBX: f61dce00 ECX: f61dda14 EDX: f6156a00
ESI: f6c04400 EDI: f6f33eb0 EBP: f6f33e54 ESP: f6f33e50
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
CR0: 8005003b CR2: 09a7c168 CR3: 01a92000 CR4: 000407f0
Stack:
 f6f33eb0 f6f33e64 c10c868a f6c04400 f6c58af0 f6f33e94 c116a9c1 f6f33e6c
 f6f33e6c f6f33e74 01f33e74 efda7000 0000000a efda7000 efda7000 00000000
 f6f33f30 f6f33ec8 c1130a88 00002bb1 00000000 00000000 00000000 c1991740
Call Trace: