[  902.729307] BUG: Bad page map in process vchan-node1  pte:12bfff167 pmd:b9b5c067
[  902.729312] page:ffffea0004afffc0 count:1 mapcount:-1 mapping:          (null) index:0xffffffffffffffff
[  902.729314] page flags: 0x2fc000000000c14(referenced|dirty|reserved|private)
[  902.729319] addr:00007f02aab28000 vm_flags:140400fb anon_vma:          (null) mapping:ffff88011472a908 index:0
[  902.729320] vma->vm_ops->fault:           (null)
[  902.729332] vma->vm_file->f_op->mmap: gntalloc_mmap+0x0/0x1d0 [xen_gntalloc]
[  902.729335] CPU: 1 PID: 2785 Comm: vchan-node1 Not tainted 3.10.3-1-ARCH #1
[  902.729337] Hardware name: Dell Inc. Precision WorkStation T3400  /0TP412, BIOS A05 05/09/2008
[  902.729338]  ffff88009b4e45c0 ffff88009d537ae8 ffffffff814bd2df ffff88009d537b30
[  902.729341]  ffffffff81146404 ffffea0004afffc0 ffff88011472a908 ffff8800b9b5c940
[  902.729344]  ffffea0004afffc0 00007f02aab29000 ffff88009d537c58 00007f02aab28000
[  902.729346] Call Trace:
[  902.729352]  [<ffffffff814bd2df>] dump_stack+0x19/0x1b
[  902.729356]  [<ffffffff81146404>] print_bad_pte+0x1b4/0x270
[  902.729359]  [<ffffffff811480c3>] unmap_single_vma+0x803/0x8d0
[  902.729363]  [<ffffffff8100a605>] ? __xen_pgd_unpin+0x105/0x290
[  902.729365]  [<ffffffff811492f9>] unmap_vmas+0x49/0x90
[  902.729368]  [<ffffffff81152168>] exit_mmap+0x98/0x170
[  902.729370]  [<ffffffff8100122b>] ? xen_hypercall_xen_version+0xb/0x20
[  902.729374]  [<ffffffff81052b59>] mmput+0x59/0x120
[  902.729377]  [<ffffffff8105b23f>] do_exit+0x27f/0xab0
[  902.729380]  [<ffffffff8100bfd9>] ? xen_irq_enable_direct_reloc+0x4/0x4
[  902.729382]  [<ffffffff814c2a6f>] ? _raw_spin_unlock_irq+0xf/0x50
[  902.729386]  [<ffffffff81085a49>] ? finish_task_switch+0x49/0xe0
[  902.729388]  [<ffffffff8105baef>] do_group_exit+0x3f/0xa0
[  902.729391]  [<ffffffff8106a35d>] get_signal_to_deliver+0x2ad/0x610
[  902.729394]  [<ffffffff81013498>] do_signal+0x48/0x8b0
[  902.729397]  [<ffffffff814c280a>] ? _raw_spin_lock_irqsave+0x1a/0x50
[  902.729399]  [<ffffffff814c280a>] ? _raw_spin_lock_irqsave+0x1a/0x50
[  902.729401]  [<ffffffff814c2a22>] ? _raw_spin_unlock_irqrestore+0x12/0x50
[  902.729404]  [<ffffffff8107b2d8>] ? finish_wait+0x58/0x70
[  902.729408]  [<ffffffffa03a26d9>] ? evtchn_read+0x229/0x240 [xen_evtchn]
[  902.729410]  [<ffffffff8107b400>] ? wake_up_bit+0x30/0x30
[  902.729413]  [<ffffffff81013d68>] do_notify_resume+0x68/0xa0
[  902.729415]  [<ffffffff814caa1a>] int_signal+0x12/0x17
[  902.729417] Disabling lock debugging due to kernel taint
[  902.729458] BUG: Bad page state in process vchan-node1  pfn:12bfff
[  902.729460] page:ffffea0004afffc0 count:0 mapcount:-1 mapping:          (null) index:0xffffffffffffffff
[  902.729462] page flags: 0x2fc000000000c14(referenced|dirty|reserved|private)
[  902.729465] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_analog iTCO_wdt iTCO_vendor_support gpio_ich dcdbas ppdev snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_page_alloc snd_timer evdev snd sou
ndcore x38_edac edac_core mperf coretemp microcode radeon psmouse pcspkr ttm serio_raw drm_kms_helper tg3 drm i2c_i801 i2c_algo_bit i2c_core ptp lpc_ich pps_core libphy xenfs xen_privcmd processor button parpo
rt_pc parport xen_pciback xen_netback xen_blkback xen_gntalloc xen_gntdev xen_evtchn nfs lockd sunrpc fscache ext4 crc16 mbcache jbd2 hid_generic usbhid hid sr_mod cdrom sd_mod ahci libahci libata scsi_mod uhc
i_hcd ehci_pci ehci_hcd usbcore usb_common
[  902.729501] CPU: 1 PID: 2785 Comm: vchan-node1 Tainted: G    B        3.10.3-1-ARCH #1
[  902.729503] Hardware name: Dell Inc. Precision WorkStation T3400  /0TP412, BIOS A05 05/09/2008
[  902.729504]  00fc000000000000 ffff88009d537a78 ffffffff814bd2df ffff88009d537a90
[  902.729506]  ffffffff81128f6c 0000000000000000 ffff88009d537ad0 ffffffff81129140
[  902.729508]  ffffea0004afffc0 ffffea0004afffc0 02fc000000000c14 0000000000000000
[  902.729511] Call Trace:
[  902.729514]  [<ffffffff814bd2df>] dump_stack+0x19/0x1b
[  902.729517]  [<ffffffff81128f6c>] bad_page.part.62+0x9c/0xf0
[  902.729520]  [<ffffffff81129140>] free_pages_prepare+0x180/0x1a0
[  902.729522]  [<ffffffff81129bb1>] free_hot_cold_page+0x31/0x150
[  902.729525]  [<ffffffff8112a12e>] free_hot_cold_page_list+0x5e/0xe0
[  902.729528]  [<ffffffff8112f428>] release_pages+0x1d8/0x210
[  902.729530]  [<ffffffff8115cddd>] free_pages_and_swap_cache+0xad/0xd0
[  902.729533]  [<ffffffff81146d0c>] tlb_flush_mmu.part.44+0x4c/0x90
[  902.729535]  [<ffffffff81146e95>] tlb_finish_mmu+0x55/0x60
[  902.729537]  [<ffffffff81152197>] exit_mmap+0xc7/0x170
[  902.729540]  [<ffffffff8100122a>] ? xen_hypercall_xen_version+0xa/0x20
[  902.729542]  [<ffffffff81052b59>] mmput+0x59/0x120
[  902.729545]  [<ffffffff8105b23f>] do_exit+0x27f/0xab0
[  902.729547]  [<ffffffff8100bfd9>] ? xen_irq_enable_direct_reloc+0x4/0x4
[  902.729550]  [<ffffffff814c2a6f>] ? _raw_spin_unlock_irq+0xf/0x50
[  902.729552]  [<ffffffff81085a49>] ? finish_task_switch+0x49/0xe0
[  902.729555]  [<ffffffff8105baef>] do_group_exit+0x3f/0xa0
[  902.729557]  [<ffffffff8106a35d>] get_signal_to_deliver+0x2ad/0x610
[  902.729560]  [<ffffffff81013498>] do_signal+0x48/0x8b0
[  902.729562]  [<ffffffff814c280a>] ? _raw_spin_lock_irqsave+0x1a/0x50
[  902.729564]  [<ffffffff814c280a>] ? _raw_spin_lock_irqsave+0x1a/0x50
[  902.729566]  [<ffffffff814c2a22>] ? _raw_spin_unlock_irqrestore+0x12/0x50
[  902.729569]  [<ffffffff8107b2d8>] ? finish_wait+0x58/0x70
[  902.729572]  [<ffffffffa03a26d9>] ? evtchn_read+0x229/0x240 [xen_evtchn]
[  902.729575]  [<ffffffff8107b400>] ? wake_up_bit+0x30/0x30
[  902.729577]  [<ffffffff81013d68>] do_notify_resume+0x68/0xa0
[  902.729579]  [<ffffffff814caa1a>] int_signal+0x12/0x17