Problem: VM's kernel panic during migration

[   73.000155] BUG: unable to handle kernel NULL pointer dereference at 0000000000000100
[   73.000155] IP: [<ffffffff81e51b20>] boot_tvec_bases+0x220/0x2040
[   73.000155] PGD 37dc067 PUD 37dd067 PMD 0 
[   73.000155] Oops: 0000 [#1] SMP 
[   73.000155] CPU 0 
[   73.000155] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat isofs ip_tables x_tables pcnet32 8139cp ne2k_pci 8390 e1000 acpiphp
[   73.000155] 
[   73.000155] Pid: 0, comm: swapper/0 Not tainted 3.2.0-80-virtual #116-Ubuntu OpenStack Foundation OpenStack Nova
[   73.000155] RIP: 0010:[<ffffffff81e51b20>]  [<ffffffff81e51b20>] boot_tvec_bases+0x220/0x2040
[   73.000155] RSP: 0018:ffff880003a03e08  EFLAGS: 00000282
[   73.000155] RAX: ffffffff81c01fd8 RBX: 0000000000000100 RCX: ffffffff81e51b20
[   73.000155] RDX: ffffffff81e51b20 RSI: ffffffff81e51b20 RDI: ffffffff81e51b20
[   73.000155] RBP: ffff880003a03e50 R08: ffffffff81e51b40 R09: dead000000200200
[   73.000155] R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff81e51b20
[   73.000155] R13: ffffffff81e51b00 R14: ffffffff81e52920 R15: ffffffff81e51b20
[   73.000155] FS:  0000000000000000(0000) GS:ffff880003a00000(0000) knlGS:0000000000000000
[   73.000155] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[   73.000155] CR2: 0000000000000100 CR3: 0000000003878000 CR4: 00000000000006f0
[   73.000155] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   73.000155] DR3: 0000000000000000 DR6: 0000000000000000 DR7: 0000000000000000
[   73.000155] Process swapper/0 (pid: 0, threadinfo ffffffff81c00000, task ffffffff81c0d020)
[   73.000155] Stack:
[   73.000155]  ffffffff81076d76 ffffffff81e51b20 ffff880003a03e10 ffff880003a03e20
[   73.000155]  ffffffff81e51900 ffffffff81e51b00 ffff880003a03e90 ffffffff81e52920
[   73.000155]  ffffffff81e51b20 ffff880003a03ed0 ffffffff810786c2 ffffffff81e53120
[   73.000155] Call Trace:
[   73.000155]  <IRQ> 
[   73.000155]  [<ffffffff81076d76>] ? call_timer_fn+0x46/0x160
[   73.000155]  [<ffffffff810786c2>] run_timer_softirq+0x132/0x2a0
[   73.000155]  [<ffffffff81095ac5>] ? ktime_get+0x65/0xe0
[   73.000155]  [<ffffffff8106f768>] __do_softirq+0xa8/0x210
[   73.000155]  [<ffffffff8109cac4>] ? tick_program_event+0x24/0x30
[   73.000155]  [<ffffffff8166932c>] call_softirq+0x1c/0x30
[   73.000155]  [<ffffffff81016445>] do_softirq+0x65/0xa0
[   73.000155]  [<ffffffff8106fb4e>] irq_exit+0x8e/0xb0
[   73.000155]  [<ffffffff81669cde>] smp_apic_timer_interrupt+0x6e/0x99
[   73.000155]  [<ffffffff81667b9e>] apic_timer_interrupt+0x6e/0x80
[   73.000155]  <EOI> 
[   73.000155]  [<ffffffff8103df56>] ? native_safe_halt+0x6/0x10
[   73.000155]  [<ffffffff8101ccd3>] default_idle+0x53/0x1d0
[   73.000155]  [<ffffffff81013236>] cpu_idle+0xd6/0x120
[   73.000155]  [<ffffffff8162579e>] rest_init+0x72/0x74
[   73.000155]  [<ffffffff81cf9c0b>] start_kernel+0x3ba/0x3c7
[   73.000155]  [<ffffffff81cf9388>] x86_64_start_reservations+0x132/0x136
[   73.000155]  [<ffffffff81cf9140>] ? early_idt_handlers+0x140/0x140
[   73.000155]  [<ffffffff81cf9459>] x86_64_start_kernel+0xcd/0xdc
[   73.000155] Code: ff ff ff f0 1a e5 81 ff ff ff ff 00 00 00 00 00 00 00 00 00 02 20 00 00 00 ad de 10 1b e5 81 ff ff ff ff 10 1b e5 81 ff ff ff ff <20> 1b e5 81 ff ff ff ff 20 1b e5 81 ff ff ff ff 30 1b e5 81 ff 
[   73.000155] RIP  [<ffffffff81e51b20>] boot_tvec_bases+0x220/0x2040
[   73.000155]  RSP <ffff880003a03e08>
[   73.000155] CR2: 0000000000000100
[   73.000155] ---[ end trace 25bbc96f04a0e46a ]---
[   73.000155] Kernel panic - not syncing: Fatal exception in interrupt
[   73.000155] Pid: 0, comm: swapper/0 Tainted: G      D      3.2.0-80-virtual #116-Ubuntu
[   73.000155] Call Trace:
[   73.000155]  <IRQ>  [<ffffffff8164639e>] panic+0x91/0x1a4
[   73.000155]  [<ffffffff8165fc4a>] oops_end+0xea/0xf0
[   73.000155]  [<ffffffff81645296>] no_context+0x150/0x15d
[   73.000155]  [<ffffffff8164546e>] __bad_area_nosemaphore+0x1cb/0x1ea
[   73.000155]  [<ffffffff8104f534>] ? __enqueue_entity+0x74/0x80
[   73.000155]  [<ffffffff81057e9b>] ? enqueue_entity+0xdb/0x290
[   73.000155]  [<ffffffff816454a0>] bad_area_nosemaphore+0x13/0x15
[   73.000155]  [<ffffffff816628db>] do_page_fault+0x47b/0x550
[   73.000155]  [<ffffffff8105157d>] ? ttwu_do_wakeup+0x3d/0x120
[   73.000155]  [<ffffffff810538f6>] ? ttwu_do_activate.constprop.178+0x66/0x70
[   73.000155]  [<ffffffff810539b6>] ? ttwu_queue+0xb6/0xd0
[   73.000155]  [<ffffffff8106077e>] ? try_to_wake_up+0x18e/0x200
[   73.000155]  [<ffffffff8165f155>] page_fault+0x25/0x30
[   73.000155]  [<ffffffff81076d76>] ? call_timer_fn+0x46/0x160
[   73.000155]  [<ffffffff810786c2>] run_timer_softirq+0x132/0x2a0
[   73.000155]  [<ffffffff81095ac5>] ? ktime_get+0x65/0xe0
[   73.000155]  [<ffffffff8106f768>] __do_softirq+0xa8/0x210
[   73.000155]  [<ffffffff8109cac4>] ? tick_program_event+0x24/0x30
[   73.000155]  [<ffffffff8166932c>] call_softirq+0x1c/0x30
[   73.000155]  [<ffffffff81016445>] do_softirq+0x65/0xa0
[   73.000155]  [<ffffffff8106fb4e>] irq_exit+0x8e/0xb0
[   73.000155]  [<ffffffff81669cde>] smp_apic_timer_interrupt+0x6e/0x99
[   73.000155]  [<ffffffff81667b9e>] apic_timer_interrupt+0x6e/0x80
[   73.000155]  <EOI>  [<ffffffff8103df56>] ? native_safe_halt+0x6/0x10
[   73.000155]  [<ffffffff8101ccd3>] default_idle+0x53/0x1d0
[   73.000155]  [<ffffffff81013236>] cpu_idle+0xd6/0x120
[   73.000155]  [<ffffffff8162579e>] rest_init+0x72/0x74
[   73.000155]  [<ffffffff81cf9c0b>] start_kernel+0x3ba/0x3c7
[   73.000155]  [<ffffffff81cf9388>] x86_64_start_reservations+0x132/0x136
[   73.000155]  [<ffffffff81cf9140>] ? early_idt_handlers+0x140/0x140
[   73.000155]  [<ffffffff81cf9459>] x86_64_start_kernel+0xcd/0xdc


Test finished successfully after guest's reboot.