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Re: [Xen-devel] kernel BUG at arch/x86/xen/mmu.c:1860!

from [Teck Choon Giam] [Permanent Link][Original]
To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] kernel BUG at arch/x86/xen/mmu.c:1860!
From: Teck Choon Giam <giamteckchoon@xxxxxxxxx>
Date: Wed, 29 Dec 2010 02:01:51 +0800
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
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It would be very good to track this down and get it fixed..
hopefully you're able to help a bit and try some things to debug it.

Konrad maybe has some ideas to try..


I would love to track this down and have it fixed or else this is a stopper for majority of us to deploy pvops stable kernel 2.6.32.x in production.  Well at least for me... ...

More related logs and it seems all is related to LVM since all will have the last sysfs file to /dev/block/dm-??/dev... ?

/var/log/messages.2:Dec 16 01:00:04 xen01 kernel: ------------[ cut here ]------------
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: kernel BUG at arch/x86/xen/mmu.c:1860!
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: invalid opcode: 0000 [#1] SMP
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: last sysfs file: /sys/block/dm-17/dev
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: CPU 5
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: Modules linked in: dm_snapshot ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp xt_physdev iptable_filter ip_tables x_tables bridge stp be2iscsi iscsi_tcp bnx2i cnic uio ipv6 cxgb3i cxgb3 mdio libiscsi_tcp libiscsi scsi_transport_iscsi loop dm_mirror dm_multipath scsi_dh video backlight output sbs sbshc power_meter hwmon battery acpi_memhotplug xen_acpi_memhotplug ac parport_pc lp parport sg tpm_tis tpm tpm_bios button i2c_i801 i2c_core iTCO_wdt e1000e shpchp pcspkr dm_region_hash dm_log dm_mod usb_storage ahci libata sd_mod scsi_mod raid1 ext3 jbd uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode]
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: Pid: 26100, comm: udevd Not tainted 2.6.32.26-3.xen.pvops.choon.centos5 #1 S3420GP
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: RIP: e030:[<ffffffff8100cb5b>]  [<ffffffff8100cb5b>] pin_pagetable_pfn+0x53/0x59
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: RSP: e02b:ffff8800086abdc8  EFLAGS: 00010282
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: RAX: 00000000ffffffea RBX: 000000000003cf00 RCX: 00000000000001e7
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: RDX: 00000000deadbeef RSI: 00000000deadbeef RDI: 00000000deadbeef
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: RBP: ffff8800086abde8 R08: 0000000000000800 R09: ffff880000000000
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: R10: 00000000deadbeef R11: 00007fe3d2a72600 R12: 0000000000000003
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: R13: 000000000003cf00 R14: ffff88003384c140 R15: 00007fe3d2638268
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: FS:  00007fe3d3401710(0000) GS:ffff8800280e0000(0000) knlGS:0000000000000000
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: CR2: 00007fe3d2638268 CR3: 0000000014ff7000 CR4: 0000000000002660
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: Process udevd (pid: 26100, threadinfo ffff8800086aa000, task ffff88003384c140)
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: Stack:
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel:  0000000000000000 000000000024f026 000000013e766520 000000000003cf00
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: <0> ffff8800086abe08 ffffffff8100e07c ffff88003ad77ac0 ffff88003ce03498
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: <0> ffff8800086abe18 ffffffff8100e0af ffff8800086abe58 ffffffff810a4013
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: Call Trace:
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel:  [<ffffffff8100e07c>] xen_alloc_ptpage+0x64/0x69
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel:  [<ffffffff8100e0af>] xen_alloc_pte+0xe/0x10
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel:  [<ffffffff810a4013>] __pte_alloc+0x70/0xce
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel:  [<ffffffff810a41b1>] handle_mm_fault+0x140/0x8b9
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel:  [<ffffffff810d2ea0>] ? d_kill+0x3a/0x42
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel:  [<ffffffff8131ba4d>] do_page_fault+0x252/0x2e2
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel:  [<ffffffff813199d5>] page_fault+0x25/0x30
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: Code: 48 b8 ff ff ff ff ff ff ff 7f 48 21 c2 48 89 55 e8 48 8d 7d e0 be 01 00 00 00 31 d2 41 ba f0 7f 00 00 e8 e9 c7 ff ff 85 c0 74 04 <0f> 0b eb fe c9 c3 55 40 f6 c7 01 48 89 e5 53 48 89 fb 74 5b 48
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: RIP  [<ffffffff8100cb5b>] pin_pagetable_pfn+0x53/0x59
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel:  RSP <ffff8800086abdc8>
/var/log/messages.2-Dec 16 01:00:04 xen01 kernel: ---[ end trace 6828227b20a6a7c6 ]---

/var/log/messages.1:Dec 25 21:45:20 xen01 kernel: ------------[ cut here ]------------
/var/log/messages.1-Dec 25 21:45:20 xen01 kernel: kernel BUG at arch/x86/xen/mmu.c:1860!
/var/log/messages.1-Dec 25 21:45:20 xen01 kernel: invalid opcode: 0000 [#1] SMP
/var/log/messages.1-Dec 25 21:45:20 xen01 kernel: last sysfs file: /sys/block/dm-26/dev
/var/log/messages.1-Dec 25 21:45:20 xen01 kernel: CPU 7
/var/log/messages.1-Dec 25 21:45:20 xen01 kernel: Modules linked in: ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp xt_physdev iptable_filter ip_tables x_tables bridge stp be2iscsi iscsi_tcp bnx2i cnic uio ipv6 cxgb3i cxgb3 mdio libiscsi_tcp libiscsi scsi_transport_iscsi loop dm_multipath scsi_dh video backlight output sbs sbshc power_meter hwmon battery acpi_memhotplug xen_acpi_memhotplug ac parport_pc lp parport sg tpm_tis tpm tpm_bios button i2c_i801 i2c_core iTCO_wdt shpchp e1000e pcspkr dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod usb_storage ahci libata sd_mod scsi_mod raid1 ext3 jbd uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode]
/var/log/messages.1-Dec 25 21:45:20 xen01 kernel: Pid: 20985, comm: udevd Not tainted 2.6.32.26-3.xen.pvops.choon.centos5 #1 S3420GP
/var/log/messages.1-Dec 25 21:45:20 xen01 kernel: RIP: e030:[<ffffffff8100cb5b>]  [<ffffffff8100cb5b>] pin_pagetable_pfn+0x53/0x59
/var/log/messages.1-Dec 25 21:45:20 xen01 kernel: RSP: e02b:ffff880035c91dc8  EFLAGS: 00010282
/var/log/messages.1-Dec 25 21:45:20 xen01 kernel: RAX: 00000000ffffffea RBX: 0000000000036540 RCX: 00000000000001b2
/var/log/messages.1-Dec 25 21:45:20 xen01 kernel: RDX: 00000000deadbeef RSI: 00000000deadbeef RDI: 00000000deadbeef
/var/log/messages.1-Dec 25 21:45:20 xen01 kernel: RBP: ffff880035c91de8 R08: 0000000000000a00 R09: ffff880000000000
/var/log/messages.1-Dec 25 21:45:20 xen01 kernel: R10: 00000000deadbeef R11: 00007f8988e49600 R12: 0000000000000003
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: R13: 0000000000036540 R14: ffff880036768540 R15: 00007f8988a0f268
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: FS:  00007f89897d8710(0000) GS:ffff88002811a000(0000) knlGS:0000000000000000
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: CR2: 00007f8988a0f268 CR3: 00000000375b8000 CR4: 0000000000002660
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: Process udevd (pid: 20985, threadinfo ffff880035c90000, task ffff880036768540)
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: Stack:
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel:  0000000000000000 00000000004431e6 000000013dba6e20 0000000000036540
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: <0> ffff880035c91e08 ffffffff8100e07c ffff8800375abac0 ffff88000665e228
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: <0> ffff880035c91e18 ffffffff8100e0af ffff880035c91e58 ffffffff810a4013
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: Call Trace:
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel:  [<ffffffff8100e07c>] xen_alloc_ptpage+0x64/0x69
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel:  [<ffffffff8100e0af>] xen_alloc_pte+0xe/0x10
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel:  [<ffffffff810a4013>] __pte_alloc+0x70/0xce
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel:  [<ffffffff810a41b1>] handle_mm_fault+0x140/0x8b9
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel:  [<ffffffff8131ba4d>] do_page_fault+0x252/0x2e2
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel:  [<ffffffff813199d5>] page_fault+0x25/0x30
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: Code: 48 b8 ff ff ff ff ff ff ff 7f 48 21 c2 48 89 55 e8 48 8d 7d e0 be 01 00 00 00 31 d2 41 ba f0 7f 00 00 e8 e9 c7 ff ff 85 c0 74 04 <0f> 0b eb fe c9 c3 55 40 f6 c7 01 48 89 e5 53 48 89 fb 74 5b 48
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: RIP  [<ffffffff8100cb5b>] pin_pagetable_pfn+0x53/0x59
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel:  RSP <ffff880035c91dc8>
/var/log/messages.1-Dec 25 21:45:21 xen01 kernel: ---[ end trace f394f31a52cfbac7 ]---

/var/log/messages:Dec 28 01:20:44 xen01 kernel: ------------[ cut here ]------------
/var/log/messages-Dec 28 01:20:44 xen01 kernel: kernel BUG at arch/x86/xen/mmu.c:1860!
/var/log/messages-Dec 28 01:20:44 xen01 kernel: invalid opcode: 0000 [#1] SMP
/var/log/messages-Dec 28 01:20:44 xen01 kernel: last sysfs file: /sys/block/dm-26/dev
/var/log/messages-Dec 28 01:20:44 xen01 kernel: CPU 2
/var/log/messages-Dec 28 01:20:44 xen01 kernel: Modules linked in: ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp xt_physdev iptable_filter ip_tables x_tables bridge stp be2iscsi iscsi_tcp bnx2i cnic uio ipv6 cxgb3i cxgb3 mdio libiscsi_tcp libiscsi scsi_transport_iscsi loop dm_multipath scsi_dh video backlight output sbs sbshc power_meter hwmon battery acpi_memhotplug xen_acpi_memhotplug ac parport_pc lp parport sg tpm_tis tpm tpm_bios button i2c_i801 i2c_core iTCO_wdt e1000e shpchp pcspkr dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod usb_storage ahci libata sd_mod scsi_mod raid1 ext3 jbd uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode]
/var/log/messages-Dec 28 01:20:44 xen01 kernel: Pid: 30295, comm: sh Not tainted 2.6.32.27-0.xen.pvops.choon.centos5 #1 S3420GP
/var/log/messages-Dec 28 01:20:44 xen01 kernel: RIP: e030:[<ffffffff8100cb5b>]  [<ffffffff8100cb5b>] pin_pagetable_pfn+0x53/0x59
/var/log/messages-Dec 28 01:20:44 xen01 kernel: RSP: e02b:ffff880036661dc8  EFLAGS: 00010282
/var/log/messages-Dec 28 01:20:44 xen01 kernel: RAX: 00000000ffffffea RBX: 000000000003be66 RCX: 00000000000001df
/var/log/messages-Dec 28 01:20:44 xen01 kernel: RDX: 00000000deadbeef RSI: 00000000deadbeef RDI: 00000000deadbeef
/var/log/messages-Dec 28 01:20:44 xen01 kernel: RBP: ffff880036661de8 R08: 0000000000000330 R09: ffff880000000000
/var/log/messages-Dec 28 01:20:44 xen01 kernel: R10: 00000000deadbeef R11: 0000000000000246 R12: 0000000000000003
/var/log/messages-Dec 28 01:20:44 xen01 kernel: R13: 000000000003be66 R14: ffff88001845e180 R15: 00000037e629a4d5
/var/log/messages-Dec 28 01:20:44 xen01 kernel: FS:  00007f240f1b96e0(0000) GS:ffff880028089000(0000) knlGS:0000000000000000
/var/log/messages-Dec 28 01:20:44 xen01 kernel: CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
/var/log/messages-Dec 28 01:20:44 xen01 kernel: CR2: 00000037e629a4d5 CR3: 0000000031765000 CR4: 0000000000002660
/var/log/messages-Dec 28 01:20:44 xen01 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
/var/log/messages-Dec 28 01:20:44 xen01 kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
/var/log/messages-Dec 28 01:20:44 xen01 kernel: Process sh (pid: 30295, threadinfo ffff880036660000, task ffff88001845e180)
/var/log/messages-Dec 28 01:20:44 xen01 kernel: Stack:
/var/log/messages-Dec 28 01:20:44 xen01 kernel:  0000000000000000 00000000004508c0 000000013dae4820 000000000003be66
/var/log/messages-Dec 28 01:20:44 xen01 kernel: <0> ffff880036661e08 ffffffff8100e07c ffff880035da1580 ffff880035c48988
/var/log/messages-Dec 28 01:20:44 xen01 kernel: <0> ffff880036661e18 ffffffff8100e0af ffff880036661e58 ffffffff810a402f
/var/log/messages-Dec 28 01:20:44 xen01 kernel: Call Trace:
/var/log/messages-Dec 28 01:20:44 xen01 kernel:  [<ffffffff8100e07c>] xen_alloc_ptpage+0x64/0x69
/var/log/messages-Dec 28 01:20:44 xen01 kernel:  [<ffffffff8100e0af>] xen_alloc_pte+0xe/0x10
/var/log/messages-Dec 28 01:20:44 xen01 kernel:  [<ffffffff810a402f>] __pte_alloc+0x70/0xce
/var/log/messages-Dec 28 01:20:44 xen01 kernel:  [<ffffffff810a41cd>] handle_mm_fault+0x140/0x8b9
/var/log/messages-Dec 28 01:20:44 xen01 kernel:  [<ffffffff81319dd5>] ? page_fault+0x25/0x30
/var/log/messages-Dec 28 01:20:44 xen01 kernel:  [<ffffffff8131be4d>] do_page_fault+0x252/0x2e2
/var/log/messages-Dec 28 01:20:44 xen01 kernel:  [<ffffffff8116dd7d>] ? __put_user_4+0x1d/0x30
/var/log/messages-Dec 28 01:20:44 xen01 kernel:  [<ffffffff81319dd5>] page_fault+0x25/0x30
/var/log/messages-Dec 28 01:20:44 xen01 kernel: Code: 48 b8 ff ff ff ff ff ff ff 7f 48 21 c2 48 89 55 e8 48 8d 7d e0 be 01 00 00 00 31 d2 41 ba f0 7f 00 00 e8 e9 c7 ff ff 85 c0 74 04 <0f> 0b eb fe c9 c3 55 40 f6 c7 01 48 89 e5 53 48 89 fb 74 5b 48
/var/log/messages-Dec 28 01:20:45 xen01 kernel: RIP  [<ffffffff8100cb5b>] pin_pagetable_pfn+0x53/0x59
/var/log/messages-Dec 28 01:20:45 xen01 kernel:  RSP <ffff880036661dc8>
/var/log/messages-Dec 28 01:20:45 xen01 kernel: ---[ end trace b65ec9b025b586cf ]---

/var/log/messages:Dec 26 15:58:29 xen01 kernel: ------------[ cut here ]------------
/var/log/messages-Dec 26 15:58:29 xen01 kernel: kernel BUG at arch/x86/xen/mmu.c:1860!
/var/log/messages-Dec 26 15:58:29 xen01 kernel: invalid opcode: 0000 [#1] SMP
/var/log/messages-Dec 26 15:58:29 xen01 kernel: last sysfs file: /sys/block/dm-26/dev
/var/log/messages-Dec 26 15:58:29 xen01 kernel: CPU 0
/var/log/messages-Dec 26 15:58:29 xen01 kernel: Modules linked in: ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp xt_physdev iptable_filter ip_tables x_tables bridge stp be2iscsi iscsi_tcp bnx2i cnic uio ipv6 cxgb3i cxgb3 mdio libiscsi_tcp libiscsi scsi_transport_iscsi loop dm_multipath scsi_dh video backlight output sbs sbshc power_meter hwmon battery acpi_memhotplug xen_acpi_memhotplug ac parport_pc lp parport sg tpm_tis tpm tpm_bios button i2c_i801 i2c_core iTCO_wdt e1000e shpchp pcspkr dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod usb_storage ahci libata sd_mod scsi_mod raid1 ext3 jbd uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode]
/var/log/messages-Dec 26 15:58:29 xen01 kernel: Pid: 27998, comm: udevd Not tainted 2.6.32.27-0.xen.pvops.choon.centos5 #1 S3420GP
/var/log/messages-Dec 26 15:58:29 xen01 kernel: RIP: e030:[<ffffffff8100cb5b>]  [<ffffffff8100cb5b>] pin_pagetable_pfn+0x53/0x59
/var/log/messages-Dec 26 15:58:29 xen01 kernel: RSP: e02b:ffff88003bc3bdc8  EFLAGS: 00010282
/var/log/messages-Dec 26 15:58:29 xen01 kernel: RAX: 00000000ffffffea RBX: 0000000000017605 RCX: 00000000000000bb
/var/log/messages-Dec 26 15:58:29 xen01 kernel: RDX: 00000000deadbeef RSI: 00000000deadbeef RDI: 00000000deadbeef
/var/log/messages-Dec 26 15:58:29 xen01 kernel: RBP: ffff88003bc3bde8 R08: 0000000000000028 R09: ffff880000000000
/var/log/messages-Dec 26 15:58:29 xen01 kernel: R10: 00000000deadbeef R11: 00007fdb5665e600 R12: 0000000000000003
/var/log/messages-Dec 26 15:58:30 xen01 kernel: R13: 0000000000017605 R14: ffff880012ee0780 R15: 00007fdb56224268
/var/log/messages-Dec 26 15:58:30 xen01 kernel: FS:  00007fdb56fed710(0000) GS:ffff88002804f000(0000) knlGS:0000000000000000
/var/log/messages-Dec 26 15:58:30 xen01 kernel: CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
/var/log/messages-Dec 26 15:58:30 xen01 kernel: CR2: 00007fdb56224268 CR3: 000000003addb000 CR4: 0000000000002660
/var/log/messages-Dec 26 15:58:30 xen01 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
/var/log/messages-Dec 26 15:58:30 xen01 kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
/var/log/messages-Dec 26 15:58:30 xen01 kernel: Process udevd (pid: 27998, threadinfo ffff88003bc3a000, task ffff880012ee0780)
/var/log/messages-Dec 26 15:58:30 xen01 kernel: Stack:
/var/log/messages-Dec 26 15:58:30 xen01 kernel:  0000000000000000 0000000000424121 000000013f00ae20 0000000000017605
/var/log/messages-Dec 26 15:58:30 xen01 kernel: <0> ffff88003bc3be08 ffffffff8100e07c ffff88003a3c2580 ffff880034bb6588
/var/log/messages-Dec 26 15:58:30 xen01 kernel: <0> ffff88003bc3be18 ffffffff8100e0af ffff88003bc3be58 ffffffff810a402f
/var/log/messages-Dec 26 15:58:31 xen01 kernel: Call Trace:
/var/log/messages-Dec 26 15:58:31 xen01 kernel:  [<ffffffff8100e07c>] xen_alloc_ptpage+0x64/0x69
/var/log/messages-Dec 26 15:58:31 xen01 kernel:  [<ffffffff8100e0af>] xen_alloc_pte+0xe/0x10
/var/log/messages-Dec 26 15:58:31 xen01 kernel:  [<ffffffff810a402f>] __pte_alloc+0x70/0xce
/var/log/messages-Dec 26 15:58:31 xen01 kernel:  [<ffffffff810a41cd>] handle_mm_fault+0x140/0x8b9
/var/log/messages-Dec 26 15:58:31 xen01 kernel:  [<ffffffff810d2ecc>] ? d_kill+0x3a/0x42
/var/log/messages-Dec 26 15:58:31 xen01 kernel:  [<ffffffff810c4cd1>] ? __fput+0x1cb/0x1da
/var/log/messages-Dec 26 15:58:31 xen01 kernel:  [<ffffffff8131be4d>] do_page_fault+0x252/0x2e2
/var/log/messages-Dec 26 15:58:31 xen01 kernel:  [<ffffffff81319dd5>] page_fault+0x25/0x30
/var/log/messages-Dec 26 15:58:31 xen01 kernel: Code: 48 b8 ff ff ff ff ff ff ff 7f 48 21 c2 48 89 55 e8 48 8d 7d e0 be 01 00 00 00 31 d2 41 ba f0 7f 00 00 e8 e9 c7 ff ff 85 c0 74 04 <0f> 0b eb fe c9 c3 55 40 f6 c7 01 48 89 e5 53 48 89 fb 74 5b 48
/var/log/messages-Dec 26 15:58:31 xen01 kernel: RIP  [<ffffffff8100cb5b>] pin_pagetable_pfn+0x53/0x59
/var/log/messages-Dec 26 15:58:31 xen01 kernel:  RSP <ffff88003bc3bdc8>
/var/log/messages-Dec 26 15:58:31 xen01 kernel: ---[ end trace 540bcf6f0170242d ]---

Thanks.

Kindest regards,
Giam Teck Choon
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