from kmsg:
<6>[   75.398771] device vethldju4L entered promiscuous mode
<6>[   75.398896] IPv6: ADDRCONF(NETDEV_UP): vethldju4L: link is not ready
<4>[   75.402908] cgroup: lxc-start (2032) created nested cgroup for controller "memory" which has incomplete hierarchy support. Nested cgroups may change behavior in the future.
<4>[   75.403038] cgroup: lxc-start (2032) created nested cgroup for controller "devices" which has incomplete hierarchy support. Nested cgroups may change behavior in the future.
<4>[   75.403462] cgroup: lxc-start (2032) created nested cgroup for controller "perf_event" which has incomplete hierarchy support. Nested cgroups may change behavior in the future.
<4>[   75.549405] audit_printk_skb: 21 callbacks suppressed
<5>[   75.549422] type=1400 audit(1376304399.325:18): apparmor="DENIED" operation="mount" info="failed flags match" error=-13 parent=2038 profile="lxc-container-default" name="/var/lib/ureadahead/debugfs/" pid=2080 comm="ureadahead" fstype="debugfs" srcname="none" flags="rw"
<4>[   79.492574] PGD 119599067 PUD 115cce067 PMD 0
<4>[   79.492813] Modules linked in: veth(F) bridge(F) stp(F) llc(F) kvm_intel kvm ghash_clmulni_intel(F) aesni_intel(F) aes_x86_64(F) xts(F) lrw(F) gf128mul(F) ablk_helper(F) cryptd(F) microcode(F) cirrus ttm virtio_balloon(F) i2c_piix4 drm_kms_helper drm syscopyarea(F) psmouse(F) sysfillrect(F) sysimgblt(F) serio_raw(F) mac_hid lp(F) parport(F) floppy(F)
<4>[   79.493640] Pid: 109, comm: kworker/u:1 Tainted: GF            3.8.0-28-generic #41-Ubuntu Bochs Bochs
<4>[   79.494022] RSP: 0018:ffff8801161c1c98  EFLAGS: 00010246
<4>[   79.494276] RDX: 0000000000000000 RSI: 0000000000000086 RDI: 0000000000000000
<4>[   79.494552] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801161c1d50
<4>[   79.494829] FS:  0000000000000000(0000) GS:ffff88011fc80000(0000) knlGS:0000000000000000
<4>[   79.495100] CR2: 0000000000000048 CR3: 0000000115bfb000 CR4: 00000000000407e0
<4>[   79.495389] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
<4>[   79.495685] Stack:
<4>[   79.495929]  ffff8801161c1ce0 ffff8801161c1cd8 ffff8801161c1d00 ffffffff815c652b
<4>[   79.496108] Call Trace:
<4>[   79.496108]  [<ffffffff815c641d>] __dev_close_many+0x7d/0xc0
<4>[   79.496108]  [<ffffffff815c6668>] rollback_registered_many+0xc8/0x200
<4>[   79.496108]  [<ffffffff815c79dd>] default_device_exit_batch+0xad/0xf0
<4>[   79.496108]  [<ffffffff815c3d60>] cleanup_net+0x110/0x1b0
<4>[   79.496108]  [<ffffffff810781fe>] worker_thread+0x16e/0x480
<4>[   79.496108]  [<ffffffff8107d590>] kthread+0xc0/0xd0
<4>[   79.496108]  [<ffffffff816d556c>] ret_from_fork+0x7c/0xb0
<4>[   79.496108] Code: c3 0f 1f 44 00 00 e8 5b 4a fd ff 83 83 b8 00 00 00 01 b8 01 00 00 00 5b 5d c3 66 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 <f0> 0f ba 6f 48 02 19 c0 85 c0 75 09 80 bf c8 03 00 00 00 75 06
<4>[   79.496108]  RSP <ffff8801161c1c98>
<4>[   79.499438] ---[ end trace 05842dcf327f38ae ]---
<1>[   79.499651] BUG: unable to handle kernel paging request at ffffffffffffffd8
<4>[   79.503411]  [<ffffffff816d556c>] ret_from_fork+0x7c/0xb0
<4>[   79.503411]  [<ffffffff8107d4d0>] ? kthread_create_on_node+0x120/0x120
<4>[   79.503411] Code: 00 48 89 e5 5d 48 8b 40 c8 48 c1 e8 02 83 e0 01 c3 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 48 8b 87 98 03 00 00 55 48 89 e5 <48> 8b 40 d8 5d c3 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90
<1>[   79.503411] RIP  [<ffffffff8107d9a0>] kthread_data+0x10/0x20
<4>[   79.503411]  RSP <ffff8801161c18c8>
<4>[   79.503411] CR2: ffffffffffffffd8
<4>[   79.503411] ---[ end trace 05842dcf327f38af ]---
<1>[   79.503411] Fixing recursive fault but reboot is needed!
<0>[  104.060002] BUG: soft lockup - CPU#3 stuck for 22s! [lxc-start:2032]
<4>[  104.060002] Modules linked in: veth(F) bridge(F) stp(F) llc(F) kvm_intel kvm ghash_clmulni_intel(F) aesni_intel(F) aes_x86_64(F) xts(F) lrw(F) gf128mul(F) ablk_helper(F) cryptd(F) microcode(F) cirrus ttm virtio_balloon(F) i2c_piix4 drm_kms_helper drm syscopyarea(F) psmouse(F) sysfillrect(F) sysimgblt(F) serio_raw(F) mac_hid lp(F) parport(F) floppy(F)
<4>[  104.060002] CPU 3
<4>[  104.060002] Pid: 2032, comm: lxc-start Tainted: GF     D      3.8.0-28-generic #41-Ubuntu Bochs Bochs
<4>[  104.060002] RIP: 0010:[<ffffffff810b9812>]  [<ffffffff810b9812>] generic_exec_single+0x82/0xb0
<4>[  104.060002] RSP: 0018:ffff880117af3c80  EFLAGS: 00000202
<4>[  104.060002] RAX: 000000000000000c RBX: ffff880117af3c50 RCX: 0000000000000005
<4>[  104.060002] RDX: 0000000000000001 RSI: 0000000000000100 RDI: 0000000000000282
<4>[  104.060002] RBP: ffff880117af3cb0 R08: ffffffff818071a0 R09: 0000000000000100
<4>[  104.060002] R10: ffffffff81ce6fc0 R11: ffff880116755620 R12: ffffffff81159209
<4>[  104.060002] R13: ffff880117af3c70 R14: ffff880115e35b00 R15: 00007f7cd52cc000
<4>[  104.060002] FS:  00007f7cd52c3740(0000) GS:ffff88011fc60000(0000) knlGS:0000000000000000
<4>[  104.060002] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[  104.060002] CR2: 00007f7cd52cc000 CR3: 0000000115bfb000 CR4: 00000000000407e0
<4>[  104.060002] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<4>[  104.060002] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
<4>[  104.060002] Process lxc-start (pid: 2032, threadinfo ffff880117af2000, task ffff880115de45c0)
<4>[  104.060002] Stack:
<4>[  104.060002]  ffffffff00000001 0000000000000004 0000000000000003 ffffffff81ce6fa0
<4>[  104.060002]  ffffffff8104d300 ffff880117316b80 ffff880117af3d18 ffffffff810b9912
<4>[  104.060002]  ffffffff811570ba ffff880117af3e68 ffff88011fc94a00 ffff88011fc94a00
<4>[  104.060002] Call Trace:
<4>[  104.060002]  [<ffffffff8104d300>] ? do_flush_tlb_all+0x60/0x60
<4>[  104.060002]  [<ffffffff810b9912>] smp_call_function_single+0xd2/0x170
<4>[  104.060002]  [<ffffffff811570ba>] ? unmap_page_range+0x40a/0x750
<4>[  104.060002]  [<ffffffff8104d300>] ? do_flush_tlb_all+0x60/0x60
<4>[  104.060002]  [<ffffffff810b9cfc>] smp_call_function_many+0x25c/0x290
<4>[  104.060002]  [<ffffffff8104d300>] ? do_flush_tlb_all+0x60/0x60
<4>[  104.060002]  [<ffffffff8104d3fe>] native_flush_tlb_others+0x2e/0x30
<4>[  104.060002]  [<ffffffff8104d4dc>] flush_tlb_mm_range+0x6c/0x240
<4>[  104.060002]  [<ffffffff81155452>] tlb_flush_mmu+0x92/0xa0
<4>[  104.060002]  [<ffffffff8115547c>] tlb_finish_mmu+0x1c/0x50
<4>[  104.060002]  [<ffffffff8115cd2b>] unmap_region+0xdb/0x120
<4>[  104.060002]  [<ffffffff8115d2f1>] ? vma_rb_erase+0x121/0x210
<4>[  104.060002]  [<ffffffff8115f0ea>] do_munmap+0x2ba/0x410
<4>[  104.060002]  [<ffffffff8115f28e>] vm_munmap+0x4e/0x70
<4>[  104.060002]  [<ffffffff8116016b>] sys_munmap+0x2b/0x40
<4>[  104.060002]  [<ffffffff816d561d>] system_call_fastpath+0x1a/0x1f
<4>[  104.060002] Code: 5c 24 08 4c 89 ef 4c 89 23 48 89 4b 08 48 89 19 e8 84 35 61 00 4d 39 fc 8b 55 d0 74 2a 85 d2 75 0a eb 0e 66 0f 1f 44 00 00 f3 90 <f6> 43 20 01 75 f8 48 8b 5d d8 4c 8b 65 e0 4c 8b 6d e8 4c 8b 75
<4>[  106.540955] hrtimer: interrupt took 24592884 ns


syslog:
Aug 12 12:46:39 ubuntu kernel: [   75.402913] cgroup: "memory" requires setting use_hierarchy to 1 on the root.
Aug 12 12:46:39 ubuntu kernel: [   75.403286] cgroup: lxc-start (2032) created nested cgroup for controller "blkio" which has incomplete hierarchy support. Nested cgroups may change behavior in the future.
Aug 12 12:46:39 ubuntu kernel: [   75.481126] IPv6: ADDRCONF(NETDEV_CHANGE): vethldju4L: link becomes ready
Aug 12 12:46:39 ubuntu kernel: [   75.481182] br0: port 2(vethldju4L) entered forwarding state
Aug 12 12:46:39 ubuntu kernel: [   75.481190] br0: port 2(vethldju4L) entered forwarding state
Aug 12 12:46:43 ubuntu kernel: [   79.492196] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048
Aug 12 12:46:43 ubuntu kernel: [   79.492418] IP: [<ffffffff815e85a5>] netif_carrier_off+0x5/0x30
Aug 12 12:46:43 ubuntu kernel: [   79.492701] Oops: 0002 [#1] SMP
Aug 12 12:46:43 ubuntu kernel: [   79.493602] CPU 4
Aug 12 12:46:43 ubuntu kernel: [   79.493854] RIP: 0010:[<ffffffff815e85a5>]  [<ffffffff815e85a5>] netif_carrier_off+0x5/0x30
Aug 12 12:46:43 ubuntu kernel: [   79.494139] RAX: 0000000000000001 RBX: ffff8801180b5000 RCX: 0000000000000004
Aug 12 12:46:43 ubuntu kernel: [   79.494414] RBP: ffff8801161c1ca8 R08: 0000000000000001 R09: 0000000000000001
Aug 12 12:46:43 ubuntu kernel: [   79.494689] R13: ffff8801161c1d50 R14: ffff8801161c1da8 R15: ffff8801161c1dd8
Aug 12 12:46:43 ubuntu kernel: [   79.494979] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Aug 12 12:46:43 ubuntu kernel: [   79.495244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Aug 12 12:46:43 ubuntu kernel: [   79.495528] Process kworker/u:1 (pid: 109, threadinfo ffff8801161c0000, task ffff8801161dae80)
Aug 12 12:46:43 ubuntu kernel: [   79.495758]  ffffffffa010219e ffff8801180b5000 ffff8801161c1cc8 ffffffff815c641d
Aug 12 12:46:43 ubuntu kernel: [   79.496108]  ffff8801161c1cd8 ffff8801161c1cd8 ffff8801161c1ce0 ffff8801161c1ce0
Aug 12 12:46:43 ubuntu kernel: [   79.496108]  [<ffffffffa010219e>] ? veth_close+0x1e/0x30 [veth]
Aug 12 12:46:43 ubuntu kernel: [   79.496108]  [<ffffffff815c652b>] dev_close_many+0x8b/0x100
Aug 12 12:46:43 ubuntu kernel: [   79.496108]  [<ffffffff815c67b7>] unregister_netdevice_many+0x17/0x70
Aug 12 12:46:43 ubuntu kernel: [   79.496108]  [<ffffffff815c3453>] ops_exit_list.isra.2+0x53/0x60
Aug 12 12:46:43 ubuntu kernel: [   79.496108]  [<ffffffff8107699c>] process_one_work+0x15c/0x4d0
Aug 12 12:46:43 ubuntu kernel: [   79.496108]  [<ffffffff81078090>] ? manage_workers+0x2a0/0x2a0
Aug 12 12:46:43 ubuntu kernel: [   79.496108]  [<ffffffff8107d4d0>] ? kthread_create_on_node+0x120/0x120
Aug 12 12:46:43 ubuntu kernel: [   79.496108]  [<ffffffff8107d4d0>] ? kthread_create_on_node+0x120/0x120
Aug 12 12:46:43 ubuntu kernel: [   79.496108] RIP  [<ffffffff815e85a5>] netif_carrier_off+0x5/0x30
Aug 12 12:46:43 ubuntu kernel: [   79.496108] CR2: 0000000000000048
Aug 12 12:47:07 ubuntu kernel: [   79.499812] IP: [<ffffffff8107d9a0>] kthread_data+0x10/0x20
Aug 12 12:47:07 ubuntu kernel: [   79.499943] PGD 1c0f067 PUD 1c10067 PMD 0
Aug 12 12:47:07 ubuntu kernel: [   79.500072] Oops: 0000 [#2] SMP
Aug 12 12:47:07 ubuntu kernel: [   79.500175] Modules linked in: veth(F) bridge(F) stp(F) llc(F) kvm_intel kvm ghash_clmulni_intel(F) aesni_intel(F) aes_x86_64(F) xts(F) lrw(F) gf128mul(F) ablk_helper(F) cryptd(F) microcode(F) cirrus ttm
 virtio_balloon(F) i2c_piix4 drm_kms_helper drm syscopyarea(F) psmouse(F) sysfillrect(F) sysimgblt(F) serio_raw(F) mac_hid lp(F) parport(F) floppy(F)
Aug 12 12:47:07 ubuntu kernel: [   79.501237] CPU 4
Aug 12 12:47:07 ubuntu kernel: [   79.501301] Pid: 109, comm: kworker/u:1 Tainted: GF     D      3.8.0-28-generic #41-Ubuntu Bochs Bochs
Aug 12 12:47:07 ubuntu kernel: [   79.501634] RIP: 0010:[<ffffffff8107d9a0>]  [<ffffffff8107d9a0>] kthread_data+0x10/0x20
Aug 12 12:47:07 ubuntu kernel: [   79.501707] RSP: 0018:ffff8801161c18c8  EFLAGS: 00010002
Aug 12 12:47:07 ubuntu kernel: [   79.501746] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000000002
Aug 12 12:47:07 ubuntu kernel: [   79.501790] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8801161dae80
Aug 12 12:47:07 ubuntu kernel: [   79.503336] RBP: ffff8801161c18c8 R08: 0000000000000001 R09: 0000000000000045
Aug 12 12:47:07 ubuntu kernel: [   79.503411] R10: 0000000000000000 R11: 0000000000000003 R12: ffff88011fc93f40
Aug 12 12:47:07 ubuntu kernel: [   79.503411] R13: 0000000000000004 R14: ffff880119a70000 R15: ffff8801161dae70
Aug 12 12:47:07 ubuntu kernel: [   79.503411] FS:  0000000000000000(0000) GS:ffff88011fc80000(0000) knlGS:0000000000000000
Aug 12 12:47:07 ubuntu kernel: [   79.503411] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Aug 12 12:47:07 ubuntu kernel: [   79.503411] CR2: ffffffffffffffd8 CR3: 0000000115bfb000 CR4: 00000000000407e0
Aug 12 12:47:07 ubuntu kernel: [   79.503411] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Aug 12 12:47:07 ubuntu kernel: [   79.503411] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Aug 12 12:47:07 ubuntu kernel: [   79.503411] Process kworker/u:1 (pid: 109, threadinfo ffff8801161c0000, task ffff8801161dae80)
Aug 12 12:47:07 ubuntu kernel: [   79.503411] Stack:
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  ffff8801161c18e0 ffffffff81078e11 ffff8801161db270 ffff8801161c1948
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  ffffffff816cb902 ffff8801161dae80 ffff8801161c1fd8 ffff8801161c1fd8
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  ffff8801161c1fd8 ffff8801161c1958 ffff8801161dae80 ffff8801161dae80
Aug 12 12:47:07 ubuntu kernel: [   79.503411] Call Trace:
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff81078e11>] wq_worker_sleeping+0x11/0xc0
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff816cb902>] __schedule+0x5d2/0x7f0
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff816cbe59>] schedule+0x29/0x70
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff8105e963>] do_exit+0x6a3/0x9d0
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff816ce1c6>] oops_end+0xa6/0xf0
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff816bff0a>] no_context+0x253/0x27e
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff816c00f5>] __bad_area_nosemaphore+0x1c0/0x1de
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff816c0126>] bad_area_nosemaphore+0x13/0x15
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff816d0d3e>] __do_page_fault+0x24e/0x500
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff8108f3e2>] ? try_to_wake_up+0x1e2/0x2a0
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff8101bb09>] ? sched_clock+0x9/0x10
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff8108f503>] ? wake_up_process+0x23/0x40
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff81074de4>] ? wake_up_worker+0x24/0x30
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff816d0ffe>] do_page_fault+0xe/0x10
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff816d0775>] do_async_page_fault+0x35/0x90
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff816cd648>] async_page_fault+0x28/0x30
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff815e85a5>] ? netif_carrier_off+0x5/0x30
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffffa010219e>] ? veth_close+0x1e/0x30 [veth]
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff815c641d>] __dev_close_many+0x7d/0xc0
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff815c652b>] dev_close_many+0x8b/0x100
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff815c6668>] rollback_registered_many+0xc8/0x200
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff815c67b7>] unregister_netdevice_many+0x17/0x70
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff815c79dd>] default_device_exit_batch+0xad/0xf0
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff815c3453>] ops_exit_list.isra.2+0x53/0x60
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff815c3d60>] cleanup_net+0x110/0x1b0
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff8107699c>] process_one_work+0x15c/0x4d0
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff810781fe>] worker_thread+0x16e/0x480
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff81078090>] ? manage_workers+0x2a0/0x2a0
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff8107d590>] kthread+0xc0/0xd0
Aug 12 12:47:07 ubuntu kernel: [   79.503411]  [<ffffffff8107d4d0>] ? kthread_create_on_node+0x120/0x120
Aug 12 12:47:35 ubuntu kernel: [   79.503411] Hardware name: Bochs
Aug 12 12:47:35 ubuntu kernel: [   79.503411] Modules linked in:<4>[   79.503411] Pid: 109, comm: kworker/u:1 Tainted: GF     D      3.8.0-28-generic #41-Ubuntu
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  <NMI>  [<ffffffff810589bf>] warn_slowpath_common+0x7f/0xc0
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff81091a38>] ? sched_clock_cpu+0xa8/0x110
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff810e99ec>] watchdog_overflow_callback+0x9c/0xd0
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff81025207>] ? x86_perf_event_set_period+0xd7/0x160
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff8102ad9b>] intel_pmu_handle_irq+0x1ab/0x330
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff816ce359>] nmi_handle.isra.0+0x59/0x90
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff816cd981>] end_repeat_nmi+0x1e/0x2e
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff81044ab2>] ? __ticket_spin_lock+0x22/0x30
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff81044ab2>] ? __ticket_spin_lock+0x22/0x30
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff816cb3e0>] __schedule+0xb0/0x7f0
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff8105ec3f>] do_exit+0x97f/0x9d0
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff816ce1c6>] oops_end+0xa6/0xf0
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff816c00f5>] __bad_area_nosemaphore+0x1c0/0x1de
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff816d0d3e>] __do_page_fault+0x24e/0x500
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff813515b2>] ? number.isra.2+0x322/0x360
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff816d0775>] do_async_page_fault+0x35/0x90
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff8107d9a0>] ? kthread_data+0x10/0x20
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff816cb902>] __schedule+0x5d2/0x7f0
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff8105e963>] do_exit+0x6a3/0x9d0
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff816bff0a>] no_context+0x253/0x27e
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff816c0126>] bad_area_nosemaphore+0x13/0x15
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff8108f3e2>] ? try_to_wake_up+0x1e2/0x2a0
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff8108f503>] ? wake_up_process+0x23/0x40
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff816d0ffe>] do_page_fault+0xe/0x10
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff816cd648>] async_page_fault+0x28/0x30
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffffa010219e>] ? veth_close+0x1e/0x30 [veth]
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff815c652b>] dev_close_many+0x8b/0x100
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff815c67b7>] unregister_netdevice_many+0x17/0x70
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff815c3453>] ops_exit_list.isra.2+0x53/0x60
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff8107699c>] process_one_work+0x15c/0x4d0
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff81078090>] ? manage_workers+0x2a0/0x2a0
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff8107d4d0>] ? kthread_create_on_node+0x120/0x120
Aug 12 12:47:35 ubuntu kernel: [   79.503411]  [<ffffffff8107d4d0>] ? kthread_create_on_node+0x120/0x120
Aug 12 12:47:35 ubuntu kernel: [  132.060002] BUG: soft lockup - CPU#3 stuck for 22s! [lxc-start:2032]
Aug 12 12:47:35 ubuntu kernel: [  132.060002] CPU 3
Aug 12 12:47:35 ubuntu kernel: [  132.060002] RIP: 0010:[<ffffffff810b9812>]  [<ffffffff810b9812>] generic_exec_single+0x82/0xb0
Aug 12 12:47:35 ubuntu kernel: [  132.060002] RAX: 000000000000000c RBX: ffff880117af3c50 RCX: 0000000000000005
Aug 12 12:47:35 ubuntu kernel: [  132.060002] RBP: ffff880117af3cb0 R08: ffffffff818071a0 R09: 0000000000000100
Aug 12 12:47:35 ubuntu kernel: [  132.060002] R13: ffff880117af3c70 R14: ffff880115e35b00 R15: 00007f7cd52cc000
Aug 12 12:47:35 ubuntu kernel: [  132.060002] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Aug 12 12:47:35 ubuntu kernel: [  132.060002] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Aug 12 12:47:35 ubuntu kernel: [  132.060002] Process lxc-start (pid: 2032, threadinfo ffff880117af2000, task ffff880115de45c0)
Aug 12 12:47:35 ubuntu kernel: [  132.060002]  ffffffff00000001 0000000000000004 0000000000000003 ffffffff81ce6fa0
Aug 12 12:47:35 ubuntu kernel: [  132.060002]  ffffffff811570ba ffff880117af3e68 ffff88011fc94a00 ffff88011fc94a00
Aug 12 12:47:35 ubuntu kernel: [  132.060002]  [<ffffffff8104d300>] ? do_flush_tlb_all+0x60/0x60
Aug 12 12:47:35 ubuntu kernel: [  132.060002]  [<ffffffff811570ba>] ? unmap_page_range+0x40a/0x750
Aug 12 12:47:35 ubuntu kernel: [  132.060002]  [<ffffffff810b9cfc>] smp_call_function_many+0x25c/0x290
Aug 12 12:47:35 ubuntu kernel: [  132.060002]  [<ffffffff8104d3fe>] native_flush_tlb_others+0x2e/0x30
Aug 12 12:47:35 ubuntu kernel: [  132.060002]  [<ffffffff81155452>] tlb_flush_mmu+0x92/0xa0
Aug 12 12:47:35 ubuntu kernel: [  132.060002]  [<ffffffff8115547c>] tlb_finish_mmu+0x1c/0x50
Aug 12 12:47:35 ubuntu kernel: [  132.060002]  [<ffffffff8115cd2b>] unmap_region+0xdb/0x120
Aug 12 12:47:35 ubuntu kernel: [  132.060002]  [<ffffffff8115d2f1>] ? vma_rb_erase+0x121/0x210
Aug 12 12:47:35 ubuntu kernel: [  132.060002]  [<ffffffff8115f0ea>] do_munmap+0x2ba/0x410
Aug 12 12:47:35 ubuntu kernel: [  132.060002]  [<ffffffff8115f28e>] vm_munmap+0x4e/0x70
Aug 12 12:48:07 ubuntu kernel: [  115.848694] WARNING: at /build/buildd/linux-3.8.0/kernel/watchdog.c:246 watchdog_overflow_callback+0x9c/0xd0()
Aug 12 12:48:07 ubuntu kernel: [  115.848694] Hardware name: Bochs
Aug 12 12:48:07 ubuntu kernel: [  115.848694] Watchdog detected hard LOCKUP on cpu 0
Aug 12 12:48:07 ubuntu kernel: [  115.848694] Modules linked in: veth(F) bridge(F) stp(F) llc(F) kvm_intel kvm ghash_clmulni_intel(F) aesni_intel(F) aes_x86_64(F) xts(F) lrw(F) gf128mul(F) ablk_helper(F) cryptd(F) microcode(F) cirrus ttm virtio_balloon(F) i2c_piix4 drm_kms_helper drm syscopyarea(F) psmouse(F) sysfillrect(F) sysimgblt(F) serio_raw(F) mac_hid lp(F) parport(F) floppy(F)
Aug 12 12:48:07 ubuntu kernel: [  115.848694] Pid: 0, comm: swapper/0 Tainted: GF     D W    3.8.0-28-generic #41-Ubuntu
Aug 12 12:48:07 ubuntu kernel: [  115.848694] Call Trace:
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  <NMI>  [<ffffffff810589bf>] warn_slowpath_common+0x7f/0xc0
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff81058abc>] warn_slowpath_fmt+0x4c/0x50
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff81091a38>] ? sched_clock_cpu+0xa8/0x110
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff810e9950>] ? touch_nmi_watchdog+0x80/0x80
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff810e99ec>] watchdog_overflow_callback+0x9c/0xd0
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff81126b8d>] __perf_event_overflow+0x9d/0x230
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff81025207>] ? x86_perf_event_set_period+0xd7/0x160
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff811277a4>] perf_event_overflow+0x14/0x20
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff8102ad9b>] intel_pmu_handle_irq+0x1ab/0x330
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff81016a54>] ? show_regs+0x94/0x270
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff81044a87>] ? native_patch+0x177/0x180
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff816cebad>] perf_event_nmi_handler+0x1d/0x20
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff816ce359>] nmi_handle.isra.0+0x59/0x90
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff816ce519>] do_nmi+0x189/0x360
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff816cd981>] end_repeat_nmi+0x1e/0x2e
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff81044ab2>] ? __ticket_spin_lock+0x22/0x30
Aug 12 12:48:07 ubuntu kernel: last message repeated 2 times
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  <<EOE>>  <IRQ>  [<ffffffff816ccd4e>] _raw_spin_lock+0xe/0x20
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff8109c367>] sched_rt_period_timer+0x117/0x380
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff8101bb09>] ? sched_clock+0x9/0x10
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff81081989>] __run_hrtimer+0x79/0x1c0
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff8109c250>] ? dequeue_task_rt+0x50/0x50
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff81082287>] hrtimer_interrupt+0xe7/0x230
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff816d7419>] smp_apic_timer_interrupt+0x69/0x99
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff816d635d>] apic_timer_interrupt+0x6d/0x80
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  <EOI>  [<ffffffff81043fa6>] ? native_safe_halt+0x6/0x10
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff8101c93f>] default_idle+0x4f/0x1a0
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff8101d5fe>] cpu_idle+0xfe/0x120
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff816ab0b2>] rest_init+0x72/0x80
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff81d05be9>] start_kernel+0x3d1/0x3dc
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff81d0566e>] ? do_early_param+0x8e/0x8e
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff81d05355>] x86_64_start_reservations+0x130/0x133
Aug 12 12:48:07 ubuntu kernel: [  115.848694]  [<ffffffff81d05458>] x86_64_start_kernel+0x100/0x10f
Aug 12 12:48:07 ubuntu kernel: [  115.848694] ---[ end trace 05842dcf327f38b1 ]---
Aug 12 12:48:07 ubuntu kernel: [  164.060003] BUG: soft lockup - CPU#3 stuck for 22s! [lxc-start:2032]
Aug 12 12:48:07 ubuntu kernel: [  164.060003] Modules linked in: veth(F) bridge(F) stp(F) llc(F) kvm_intel kvm ghash_clmulni_intel(F) aesni_intel(F) aes_x86_64(F) xts(F) lrw(F) gf128mul(F) ablk_helper(F) cryptd(F) microcode(F) cirrus ttm virtio_balloon(F) i2c_piix4 drm_kms_helper drm syscopyarea(F) psmouse(F) sysfillrect(F) sysimgblt(F) serio_raw(F) mac_hid lp(F) parport(F) floppy(F)
Aug 12 12:48:07 ubuntu kernel: [  164.060003] CPU 3
Aug 12 12:48:07 ubuntu kernel: [  164.060003] Pid: 2032, comm: lxc-start Tainted: GF     D W    3.8.0-28-generic #41-Ubuntu Bochs Bochs
Aug 12 12:48:07 ubuntu kernel: [  164.060003] RIP: 0010:[<ffffffff810b9812>]  [<ffffffff810b9812>] generic_exec_single+0x82/0xb0
Aug 12 12:48:07 ubuntu kernel: [  164.060003] RSP: 0018:ffff880117af3c80  EFLAGS: 00000202
Aug 12 12:48:07 ubuntu kernel: [  164.060003] RAX: 000000000000000c RBX: ffff880117af3c50 RCX: 0000000000000005
Aug 12 12:48:07 ubuntu kernel: [  164.060003] RDX: 0000000000000001 RSI: 0000000000000100 RDI: 0000000000000282