root@ubuntu:/etc/lxc# lxc-stop -n centos_test [ 837.692268] kernel BUG at /build/buildd/linux-3.0.0/net/netfilter/xt_recent.c:610! [ 837.692268] invalid opcode: 0000 [#1] SMP [ 837.692268] Modules linked in: xt_recent scsi_transport_iscsi veth ip6table_filter ip6_tables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables bridge stp ppdev joydev snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm psmouse snd_timer serio_raw snd i2c_piix4 parport_pc soundcore parport snd_page_alloc usbhid hid ahci libahci e1000 [ 837.692268] [ 837.692268] Pid: 33, comm: kworker/u:2 Not tainted 3.0.0-12-generic #19-Ubuntu innotek GmbH VirtualBox [ 837.692268] EIP: 0060:[] EFLAGS: 00010202 CPU: 0 [ 837.692268] EIP is at recent_net_exit+0x35/0x40 [xt_recent] [ 837.692268] EAX: d4d84000 EBX: d8a17014 ECX: d507bb40 EDX: d5e72a70 [ 837.692268] ESI: d4d84000 EDI: d69dbf40 EBP: d69dbf18 ESP: d69dbf18 [ 837.692268] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 837.692268] Process kworker/u:2 (pid: 33, ti=d69da000 task=d5620cc0 task.ti=d69da000) [ 837.692268] Stack: [ 837.692268] d69dbf30 c143353e d8a17018 d8a17008 d69dbf40 d57690c0 d69dbf54 c1433c35 [ 837.692268] d4d84014 d4d84014 d4d8401c d4d8401c c17a9a58 c18a0e50 d57690c0 d69dbf94 [ 837.692268] c1061471 c18a0e00 d69dbf7c c1061c35 c106134e 00000300 d685ae05 00000001 [ 837.692268] Call Trace: [ 837.692268] [] ops_exit_list.isra.1+0x2e/0x50 [ 837.692268] [] cleanup_net+0xd5/0x160 [ 837.692268] [] process_one_work+0x101/0x3a0 [ 837.692268] [] ? maybe_create_worker+0x15/0xe0 [ 837.692268] [] ? destroy_worker+0x7e/0xa0 [ 837.692268] [] ? net_drop_ns+0x40/0x40 [ 837.692268] [] worker_thread+0x124/0x2d0 [ 837.692268] [] ? manage_workers.isra.28+0x110/0x110 [ 837.692268] [] kthread+0x6d/0x80 [ 837.692268] [] ? flush_kthread_worker+0x80/0x80 [ 837.692268] [] kernel_thread_helper+0x6/0x10 [ 837.692268] Code: 64 72 a1 d8 8b 88 e4 03 00 00 85 d2 74 18 3b 11 77 14 8b 54 91 08 3b 12 75 11 ba 30 60 a1 d8 e8 c2 6e 76 e8 5d c3 e8 93 0a 00 00 <0f> 0b 89 f6 8d bc 27 00 00 00 00 55 89 e5 53 3e 8d 74 26 00 8b [ 837.692268] EIP: [] recent_net_exit+0x35/0x40 [xt_recent] SS:ESP 0068:d69dbf18 [ 838.968548] ---[ end trace af7a6fa6a91a9531 ]--- [ 838.971439] BUG: unable to handle kernel paging request at fffffffc [ 838.972506] IP: [] kthread_data+0xf/0x20 [ 838.972506] *pde = 01874067 *pte = 00000000 [ 838.972506] Oops: 0000 [#2] SMP [ 838.972506] Modules linked in: xt_recent scsi_transport_iscsi veth ip6table_filter ip6_tables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables bridge stp ppdev joydev snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm psmouse snd_timer serio_raw snd i2c_piix4 parport_pc soundcore parport snd_page_alloc usbhid hid ahci libahci e1000 [ 838.972506] [ 838.972506] Pid: 33, comm: kworker/u:2 Tainted: G D 3.0.0-12-generic #19-Ubuntu innotek GmbH VirtualBox [ 838.972506] EIP: 0060:[] EFLAGS: 00010002 CPU: 0 [ 838.972506] EIP is at kthread_data+0xf/0x20 [ 838.972506] EAX: 00000000 EBX: 00000000 ECX: c1868ec0 EDX: 00000000 [ 838.972506] ESI: 00000000 EDI: 0000000b EBP: d69dbd30 ESP: d69dbd24 [ 838.972506] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 838.972506] Process kworker/u:2 (pid: 33, ti=d69da000 task=d5620cc0 task.ti=d69da000) [ 838.972506] Stack: [ 838.972506] c1062371 d5620f54 00000000 d69dbdb8 c152a73f d69dbd4c c1116203 d7523680 [ 838.972506] d4bb4ea0 d6805d80 c1868ec0 c1868ec0 d4bb4ea0 00000282 d6c05ec0 d5620cc0 [ 838.972506] d6805d80 d69dbd98 c1117f1a c126c269 d7523680 c10aec72 d69dbd98 c126c269 [ 838.972506] Call Trace: [ 838.972506] [] ? wq_worker_sleeping+0x11/0x80 [ 838.972506] [] schedule+0x55f/0x680 [ 838.972506] [] ? add_partial+0x43/0x70 [ 838.972506] [] ? kmem_cache_free+0xea/0x100 [ 838.972506] [] ? put_io_context+0x39/0x60 [ 838.972506] [] ? call_rcu_sched+0x12/0x20 [ 838.972506] [] ? put_io_context+0x39/0x60 [ 838.972506] [] ? put_io_context+0x39/0x60 [ 838.972506] [] ? put_io_context+0x39/0x60 [ 838.972506] [] ? exit_io_context+0x59/0x70 [ 838.972506] [] do_exit+0x1f0/0x3a0 [ 838.972506] [] ? printk+0x2d/0x2f [ 838.972506] [] oops_end+0x96/0xd0 [ 838.972506] [] die+0x54/0x80 [ 838.972506] [] do_trap+0x96/0xd0 [ 838.972506] [] ? do_bounds+0x80/0x80 [ 838.972506] [] do_invalid_op+0x8b/0xa0 [ 838.972506] [] ? recent_net_exit+0x35/0x40 [xt_recent] [ 838.972506] [] ? kobject_release+0x45/0x80 [ 838.972506] [] ? kobject_release+0x45/0x80 [ 838.972506] [] ? kobject_del+0x30/0x30 [ 838.972506] [] ? kref_put+0x2c/0x60 [ 838.972506] [] ? kobject_put+0x1d/0x50 [ 838.972506] [] ? loopback_dev_free+0x1d/0x20 [ 838.972506] [] ? netdev_run_todo+0xcd/0x140 [ 838.972506] [] error_code+0x67/0x6c [ 838.972506] [] ? __skb_splice_bits+0xb/0x3d0 [ 838.972506] [] ? recent_net_exit+0x35/0x40 [xt_recent] [ 838.972506] [] ops_exit_list.isra.1+0x2e/0x50 [ 838.972506] [] cleanup_net+0xd5/0x160 [ 838.972506] [] process_one_work+0x101/0x3a0 [ 838.972506] [] ? maybe_create_worker+0x15/0xe0 [ 838.972506] [] ? destroy_worker+0x7e/0xa0 [ 838.972506] [] ? net_drop_ns+0x40/0x40 [ 838.972506] [] worker_thread+0x124/0x2d0 [ 838.972506] [] ? manage_workers.isra.28+0x110/0x110 [ 838.972506] [] kthread+0x6d/0x80 [ 838.972506] [] ? flush_kthread_worker+0x80/0x80 [ 838.972506] [] kernel_thread_helper+0x6/0x10 [ 838.972506] Code: 10 31 c0 5b 5e 5f 5d c3 ba 3e 01 00 00 b8 ac 1b 6b c1 e8 35 1b fe ff e9 bb fe ff ff 55 89 e5 3e 8d 74 26 00 8b 80 68 02 00 00 5d <8b> 40 fc c3 8d b6 00 00 00 00 8d bc 27 00 00 00 00 55 89 e5 3e [ 838.972506] EIP: [] kthread_data+0xf/0x20 SS:ESP 0068:d69dbd24 [ 838.972506] CR2: 00000000fffffffc [ 838.972506] ---[ end trace af7a6fa6a91a9532 ]--- [ 838.972506] Fixing recursive fault but reboot is needed!