root@tarballerina:~# /usr/lib/xen/bin/xenctx -s /boot/System.map-3.0.3-xenU 2 0
rip: ffffffff810013aa hypercall_page+0x3aa
flags: 00001246 i z p
rsp: ffffffff81801f40
rax: 0000000000000000   rcx: ffffffff810013aa   rdx: 0000000000000000
rbx: ffffffff81800010   rsi: 00000000deadbeef   rdi: 00000000deadbeef
rbp: ffffffff8185dc08    r8: 0000000000000000    r9: dead000000200200
r10: ffff88001f9cd568   r11: 0000000000000246   r12: 0000000000000000
r13: ffffffffffffffff   r14: 0000000000000000   r15: 0000000000000000
 cs: e033        ss: e02b        ds: 0000        es: 0000
 fs: 0000 @ 00007f0b724627a0
 gs: 0000 @ ffff88001fec6000/0000000000000000
Code (instr addr ffffffff810013aa)
cc cc cc cc cc cc cc cc cc cc cc 51 41 53 b8 1d 00 00 00 0f 05 <41> 5b 59 c3 cc cc cc cc cc cc cc


Stack:
 09f911029d74e35b 0000000000000000 ffffffff810072cc ffffffff81013a53
 ffffffff8100afe6 ffffffff818b14c0 ffffffff818add40 ffffffff818b14c0
 ffffffff81877bd4 0000000000000000 ffffffff818b14c0 0000000000000000
 ffffffff81c56000 0000000000000000 0000000000000000 0000000000000000

Call Trace:
  [<ffffffff810013aa>] hypercall_page+0x3aa  <--
  [<ffffffff810072cc>] xen_safe_halt+0xc
  [<ffffffff81013a53>] default_idle+0x23
  [<ffffffff8100afe6>] cpu_idle+0x56
  [<ffffffff81877bd4>] start_kernel+0x336
  [<ffffffff8187a0a7>] xen_start_kernel+0x600
root@tarballerina:~# /usr/lib/xen/bin/xenctx -s /boot/System.map-3.0.3-xenU 2 1
rip: ffffffff81083e1b stop_machine_cpu_stop+0x6b
flags: 00001297 i s nz a p c
rsp: ffff88001f9fdde0
rax: 0000000000000003   rcx: 0000000000000002   rdx: 0000000000000000
rbx: ffff88001fa6ddb0   rsi: ffff88001f9e6b90   rdi: ffff88001fa6ddb0
rbp: 0000000000000003    r8: ffff88001f9fc000    r9: 0000000000000000
r10: 0000000000000000   r11: 0000000000000000   r12: ffff88001fa6ddd4
r13: ffffffff81083d00   r14: ffff88001fa6ddb0   r15: ffff88001f9f6bd0
 cs: e033        ss: e02b        ds: 0000        es: 0000
 fs: 0000 @ 00007f65e5184700
 gs: 0000 @ ffff88001fee0000/0000000000000000
Code (instr addr ffffffff81083e1b)
10 ff c0 89 4b 24 89 43 20 83 fd 04 74 34 89 e8 f3 90 8b 6b 20 <39> c5 74 f0 83 fd 02 75 cc ff 14


Stack:
 ffff88001f9f6bd0 ffff88001fa6dd30 ffff88001feee2e0 ffff88001f9f6bd0
 ffffffff81083db0 ffffffff81083cf0 ffff88001feee2e8 ffff88001f9fdfd8
 ffffffff818172a0 0000000000000001 ffff88001f9fdee0 ffffffff815ebf70
 0000000000000001 ffff88001f9e9dc0 0000000000000000 0000000000000000

Call Trace:
  [<ffffffff81083e1b>] stop_machine_cpu_stop+0x6b  <--
  [<ffffffff81083db0>] stop_machine_cpu_stop
  [<ffffffff81083cf0>] cpu_stopper_thread+0xd0
  [<ffffffff815ebf70>] schedule+0x270
  [<ffffffff81083c20>] cpu_stopper_thread
  [<ffffffff81065766>] kthread+0x96
  [<ffffffff815ef724>] kernel_thread_helper+0x4
  [<ffffffff815eeb36>] int_ret_from_sys_call+0x7
  [<ffffffff815ee2e1>] retint_restore_args+0x5
  [<ffffffff815ef720>] kernel_thread_helper