root      2678  0.0  0.0      0     0 ?        Zsl  Feb17   0:00 [chef-client] <defunct>
root      2681  0.0  0.0      0     0 ?        Zsl  Feb17   0:00 [chef-client] <defunct>
root      2690  0.0  0.0      0     0 ?        Zsl  Feb17   0:00 [chef-client] <defunct>
root      2693  0.0  0.0      0     0 ?        Zsl  Feb17   0:00 [chef-client] <defunct>
root      2696  0.0  0.0      0     0 ?        Zsl  Feb17   0:00 [chef-client] <defunct>
root      2699  0.0  0.0      0     0 ?        Zsl  Feb17   0:00 [chef-client] <defunct>
root      2706  0.0  0.0      0     0 ?        Zsl  Feb17   0:00 [chef-client] <defunct>

Feb 17 23:28:37 chefc kernel: [ 2004.933397] alignment check: 0000 [#63] SMP 
Feb 17 23:28:37 chefc kernel: [ 2004.933414] CPU 0 
Feb 17 23:28:37 chefc kernel: [ 2004.933417] Modules linked in: isofs acpiphp
Feb 17 23:28:37 chefc kernel: [ 2004.933424] 
Feb 17 23:28:37 chefc kernel: [ 2004.933428] Pid: 2708, comm: chef-client Tainted: G      D      3.2.0-37-virtual #58-Ubuntu  
Feb 17 23:28:37 chefc kernel: [ 2004.933436] RIP: e030:[<ffffffff8113aa34>]  [<ffffffff8113aa34>] zap_pte_range+0x44/0x3d0
Feb 17 23:28:37 chefc kernel: [ 2004.933449] RSP: e02b:ffff8800089b7a68  EFLAGS: 00050292
Feb 17 23:28:37 chefc kernel: [ 2004.933453] RAX: ffff88000901c4a0 RBX: ffff8800089f8018 RCX: 0000000000400000
Feb 17 23:28:37 chefc kernel: [ 2004.933459] RDX: ffff8800089f8010 RSI: ffff8800089daf20 RDI: ffff8800089b7c08
Feb 17 23:28:37 chefc kernel: [ 2004.933464] RBP: ffff8800089b7b08 R08: 0000000000401000 R09: 0000000000000000
Feb 17 23:28:37 chefc kernel: [ 2004.933469] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000400000
Feb 17 23:28:37 chefc kernel: [ 2004.933474] R13: 0000000000401000 R14: ffff88002383ea80 R15: 0000000000401000
Feb 17 23:28:37 chefc kernel: [ 2004.933484] FS:  00007ff0714e0700(0000) GS:ffff880026400000(0000) knlGS:0000000000000000
Feb 17 23:28:37 chefc kernel: [ 2004.933490] CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
Feb 17 23:28:37 chefc kernel: [ 2004.933494] CR2: 00007ff0715f53ec CR3: 0000000001c05000 CR4: 0000000000002620
Feb 17 23:28:37 chefc kernel: [ 2004.933500] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Feb 17 23:28:37 chefc kernel: [ 2004.933505] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000000
Feb 17 23:28:37 chefc kernel: [ 2004.933511] Process chef-client (pid: 2708, threadinfo ffff8800089b6000, task ffff88000901c4a0)
Feb 17 23:28:37 chefc kernel: [ 2004.933517] Stack:
Feb 17 23:28:37 chefc kernel: [ 2004.933520]  0000000000007ff0 0000000000000040 ffffffff81cdbe68 ffff8800089b7ab0
Feb 17 23:28:37 chefc kernel: [ 2004.933529]  ffffffff8100632d ffff88000901c4a0 ffff8800089f8010 ffff8800089f8010
Feb 17 23:28:37 chefc kernel: [ 2004.933537]  ffff8800089daf20 ffff8800089b7c08 0000000000000000 ffff8800089b7b98
Feb 17 23:28:37 chefc kernel: [ 2004.933546] Call Trace:
Feb 17 23:28:37 chefc kernel: [ 2004.933553]  [<ffffffff8100632d>] ? pte_mfn_to_pfn+0x8d/0x110
Feb 17 23:28:37 chefc kernel: [ 2004.933559]  [<ffffffff81005339>] ? __raw_callee_save_xen_pmd_val+0x11/0x1e
Feb 17 23:28:37 chefc kernel: [ 2004.933565]  [<ffffffff8113af6a>] unmap_page_range+0x1aa/0x300
Feb 17 23:28:37 chefc kernel: [ 2004.933570]  [<ffffffff8113b64a>] unmap_vmas+0xca/0x1a0
Feb 17 23:28:37 chefc kernel: [ 2004.933576]  [<ffffffff81142b67>] exit_mmap+0x97/0x140
Feb 17 23:28:37 chefc kernel: [ 2004.933582]  [<ffffffff81064742>] mmput.part.16+0x42/0x130
Feb 17 23:28:37 chefc kernel: [ 2004.933588]  [<ffffffff81064855>] mmput+0x25/0x30
Feb 17 23:28:37 chefc kernel: [ 2004.933593]  [<ffffffff8106b083>] exit_mm+0x113/0x130
Feb 17 23:28:37 chefc kernel: [ 2004.933600]  [<ffffffff810e2c63>] ? taskstats_exit+0x1a3/0x240
Feb 17 23:28:37 chefc kernel: [ 2004.933607]  [<ffffffff816563b5>] ? _raw_spin_lock_irq+0x15/0x20
Feb 17 23:28:37 chefc kernel: [ 2004.933613]  [<ffffffff8106b20e>] do_exit+0x16e/0x450
Feb 17 23:28:37 chefc kernel: [ 2004.933620]  [<ffffffff810797da>] ? __dequeue_signal+0x6a/0xb0
Feb 17 23:28:37 chefc kernel: [ 2004.933638]  [<ffffffff81014825>] do_signal+0x45/0x130
Feb 17 23:28:37 chefc kernel: [ 2004.933643]  [<ffffffff816562de>] ? _raw_spin_unlock_irqrestore+0x1e/0x30
Feb 17 23:28:37 chefc kernel: [ 2004.933650]  [<ffffffff8165cbb0>] ? kprobe_flush_task+0xc0/0x150
Feb 17 23:28:37 chefc kernel: [ 2004.933657]  [<ffffffff8105566f>] ? finish_task_switch+0xcf/0xf0
Feb 17 23:28:37 chefc kernel: [ 2004.933663]  [<ffffffff81014ad5>] do_notify_resume+0x65/0x80
Feb 17 23:28:37 chefc kernel: [ 2004.933669]  [<ffffffff8105fae7>] ? schedule_tail+0x27/0xb0
Feb 17 23:28:37 chefc kernel: [ 2004.933675]  [<ffffffff8165e990>] int_signal+0x12/0x17
Feb 17 23:28:37 chefc kernel: [ 2004.933679] Code: 65 48 8b 04 25 00 c5 00 00 48 89 7d a8 48 89 75 a0 49 89 cc 48 89 55 98 4d 89 c7 4c 89 4d b0 48 89 45 88 0f 1f 40 00 48 8b 55 98 <48> c7 45 c4 00 00 00 00 c7 45 cc 00 00 00 00 48 8b 3a ff 14 25 
Feb 17 23:28:37 chefc kernel: [ 2004.933736] RIP  [<ffffffff8113aa34>] zap_pte_range+0x44/0x3d0
Feb 17 23:28:37 chefc kernel: [ 2004.933742]  RSP <ffff8800089b7a68>
Feb 17 23:28:37 chefc kernel: [ 2004.933755] ---[ end trace 831ec56a6006f24b ]---
Feb 17 23:28:37 chefc kernel: [ 2004.933759] Fixing recursive fault but reboot is needed!