[ 1140.060007] Code: f0 ff 4b 24 0f 94 c1 84 c9 44 89 e2 74 12 8b 43 20 8b 4b 10 8d 50 01 89 4b 24 89 53 20 44 89 e2 83 fa 04 74 20 f3 90 44 8b 63 20 <41> 39 d4 74 f0 41 83 fc 02 75 bf fa 66 66 90 66 66 90 eb c1 66 [ 1152.076005] BUG: soft lockup - CPU#1 stuck for 22s! [migration/1:12] [ 1152.076005] Modules linked in: vhost_net vhost macvtap macvlan tun nf_conntrack_ipv6 nf_defrag_ipv6 xt_mac xt_physdev veth ipt_MASQUERADE iptable_n at nf_nat_ipv4 nf_nat xt_CHECKSUM iptable_mangle bridge stp llc ip6table_filter ip6_tables ebtable_nat ebtables openvswitch gre nf_conntrack_ipv4 nf_d efrag_ipv4 xt_conntrack nf_conntrack joydev virtio_balloon kvm_intel i2c_piix4 i2c_core ppdev kvm virtio_net serio_raw crc32c_intel parport_pc parport mperf microcode nfsd auth_rpcgss nfs_acl lockd sunrpc virtio_blk virtio_pci virtio_ring ata_generic virtio pata_acpi [ 1152.076005] CPU: 1 PID: 12 Comm: migration/1 Not tainted 3.11.8-300.fc20.x86_64 #1 [ 1152.076005] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1152.076005] task: ffff8801fd396ac0 ti: ffff8801fcc24000 task.ti: ffff8801fcc24000 [ 1152.076005] RIP: 0010:[] [] stop_machine_cpu_stop+0x86/0xe0 [ 1152.076005] RSP: 0018:ffff8801fcc25d90 EFLAGS: 00000293 [ 1152.076005] RAX: ffffffff81cec880 RBX: ffff8801fcc60540 RCX: dead000000200200 [ 1152.076005] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff8801f9f21cd8 [ 1168.099005] RBP: ffff8801fcca9db0 R08: ffff88020818e900 R09: 0000000000000000 [ 1168.099005] R10: 0000000000000001 R11: 0000000000000001 R12: ffff8801fcca9ddc [ 1168.099005] R13: 0000000000014180 R14: 0000000200000003 R15: ffffffff810a2a33 [ 1168.099005] FS: 0000000000000000(0000) GS:ffff880208180000(0000) knlGS:0000000000000000 [ 1168.099005] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 1168.099005] CR2: 000000000047ca40 CR3: 00000001f9d77000 CR4: 00000000000027e0 [ 1168.099005] Stack: [ 1168.099005] ffff8801f9f21c58 ffff88020818e930 ffff8801f9f21cd8 ffffffff810debf0 [ 1168.099005] ffff8801fcca9e78 ffffffff810deb42 ffff88020818e938 0000000000000000 [ 1168.099005] 0000000000000000 ffff880208194180 ffff8801fbf32680 0000000000000000 [ 1168.099005] Call Trace: [ 1168.099005] [] ? cpu_stopper_thread+0x130/0x130 [ 1168.099005] [] cpu_stopper_thread+0x82/0x130 [ 1168.099005] [] ? __schedule+0x2ba/0x750 [ 1168.099005] [] smpboot_thread_fn+0xff/0x1a0 [ 1168.099005] [] ? lg_local_lock_cpu+0x40/0x40 [ 1168.099005] [] kthread+0xc0/0xd0 [ 1168.099005] [] ? insert_kthread_work+0x40/0x40 [ 1168.099005] [] ret_from_fork+0x7c/0xb0 [ 1168.099005] [] ? insert_kthread_work+0x40/0x40 [ 1168.099005] Code: 84 ed 75 5d f0 ff 4b 24 0f 94 c1 84 c9 44 89 e2 74 12 8b 43 20 8b 4b 10 8d 50 01 89 4b 24 89 53 20 44 89 e2 83 fa 04 74 20 f3 90 <44> 8b 63 20 41 39 d4 74 f0 41 83 fc 02 75 bf fa 66 66 90 66 66