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[Xen-users] xen system freeze (dom0 and domU)

To: xen-users <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-users] xen system freeze (dom0 and domU)
From: Stefan Below <stefanbelow@xxxxxx>
Date: Sat, 21 Nov 2009 12:27:31 +0100
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Hello,

my xen server runs basically fine since today. But now i get a kernel panics during startup dom0 or domU. I did not update the system the last days, so it could be an hardware issue.

System:
   Asus P5e-vm do
   Intel Q6600
   8 GB Ram
   4x SATA (md raid 10)

   Debian Lenny
      Kernel: 2.6.26-xen-amd64
      xen 3.4.1
domu:
  2x Windows HVM (1 with device pass-through)
  2x PV Linux


Sometimes, dom0 freezes when i restart  or stop a domU.

The attachment is cutout of the syslog. When you need more information, please let me know.

Thanks,
Stefan



Nov 21 08:28:50 XenServer kernel: [ 1976.201023] xm[8060]: segfault at 
3f7f3244e050 ip 4d5e89 sp 7fff3a499d60 error 4 in python2.5[400000+125000]
Nov 21 08:28:55 XenServer kernel: [ 1980.712660] xm[8069]: segfault at 
2fc1400d9158 ip 4bce31 sp 7fff480fc9e0 error 4 in python2.5[400000+125000]
Nov 21 08:28:57 XenServer kernel: [ 1982.852795] xm[8074]: segfault at 
6f32201fef50 ip 44988f sp 7fff2827be00 error 6 in python2.5[400000+125000]
Nov 21 08:28:58 XenServer kernel: [ 1983.975308] xm[8075]: segfault at 
3fb6577425b0 ip 4bce31 sp 7fff60584e80 error 4 in python2.5[400000+125000]
Nov 21 08:28:59 XenServer kernel: [ 1985.078744] xm[8077]: segfault at 
3fa5a3443030 ip 48eaee sp 7fffab46e4b0 error 6 in python2.5[400000+125000]
Nov 21 08:29:00 XenServer kernel: [ 1986.202381] xm[8079]: segfault at 
3f3c28b0a2a8 ip 4bce31 sp 7fff30b4d430 error 4 in python2.5[400000+125000]
Nov 21 08:29:01 XenServer kernel: [ 1987.239166] xm[8081]: segfault at 
3ff627541c08 ip 4bce31 sp 7fff30351980 error 4 in python2.5[400000+125000]
Nov 21 08:29:02 XenServer kernel: [ 1988.241082] BUG: unable to handle kernel 
paging request at ffff9d5555555000
Nov 21 08:29:02 XenServer kernel: [ 1988.241094] IP: [<ffffffff80272db3>] 
unmap_vmas+0x2a5/0xa46
Nov 21 08:29:02 XenServer kernel: [ 1988.241103] PGD 0 
Nov 21 08:29:02 XenServer kernel: [ 1988.241105] Oops: 0000 [1] SMP 
Nov 21 08:29:02 XenServer kernel: [ 1988.241108] CPU 0 
Nov 21 08:29:02 XenServer kernel: [ 1988.241110] Modules linked in: i915 drm 
xt_tcpudp nf_conntrack_ipv4 xt_state nf_conntrack xt_physdev iptable_filter 
ip_tables x_tables tun bridge ipv6 xfs fuse loop i2c_i801 serio_raw i2c_core 
psmouse shpchp pcspkr pci_hotplug button intel_agp evdev ext3 jbd mbcache 
dm_mirror dm_log dm_snapshot dm_mod raid10 sd_mod ata_generic ata_piix libata 
scsi_mod dock ehci_hcd uhci_hcd ide_pci_generic ide_core e1000e thermal 
processor fan thermal_sys raid1 md_mod [last unloaded: scsi_wait_scan]
Nov 21 08:29:02 XenServer kernel: [ 1988.241148] Pid: 8082, comm: python Not 
tainted 2.6.26-2-xen-amd64 #1
Nov 21 08:29:02 XenServer kernel: [ 1988.241150] RIP: e030:[<ffffffff80272db3>] 
 [<ffffffff80272db3>] unmap_vmas+0x2a5/0xa46
Nov 21 08:29:02 XenServer kernel: [ 1988.241154] RSP: e02b:ffff8800483f7bf8  
EFLAGS: 00010287
Nov 21 08:29:02 XenServer kernel: [ 1988.241156] RAX: 0000800040000000 RBX: 
0000000000000000 RCX: 0000800040000000
Nov 21 08:29:02 XenServer kernel: [ 1988.241159] RDX: ffff9d5555555000 RSI: 
0000000000000067 RDI: ffff8800048cc5a8
Nov 21 08:29:02 XenServer kernel: [ 1988.241161] RBP: 0000800000000000 R08: 
00000000001f04f9 R09: ffff88000a78a200
Nov 21 08:29:02 XenServer kernel: [ 1988.241163] R10: 0000131300000001 R11: 
ffff8800472bfff8 R12: ffff8800048cc5a8
Nov 21 08:29:02 XenServer kernel: [ 1988.241165] R13: ffff88002faabff8 R14: 
ffff8801ee6df140 R15: ffff88000455b578
Nov 21 08:29:02 XenServer kernel: [ 1988.241169] FS:  00007f05f96676e0(0000) 
GS:ffffffff8053a000(0000) knlGS:0000000000000000
Nov 21 08:29:02 XenServer kernel: [ 1988.241172] CS:  e033 DS: 0000 ES: 0000
Nov 21 08:29:02 XenServer kernel: [ 1988.241174] DR0: 0000000000000000 DR1: 
0000000000000000 DR2: 0000000000000000
Nov 21 08:29:02 XenServer kernel: [ 1988.241176] DR3: 0000000000000000 DR6: 
00000000ffff0ff0 DR7: 0000000000000400
Nov 21 08:29:02 XenServer kernel: [ 1988.241179] Process python (pid: 8082, 
threadinfo ffff8800483f6000, task ffff8801ef9af5c0)
Nov 21 08:29:02 XenServer kernel: [ 1988.241181] Stack:  ffff880029882000 
0000000000000000 ffff8800483f7cd8 ffffffffffffffff
Nov 21 08:29:02 XenServer kernel: [ 1988.241186]  0000000000000000 
ffff880038ea6870 ffff8800483f7ce0 000000000000b182
Nov 21 08:29:02 XenServer kernel: [ 1988.241189]  0000000000000000 
00000001ee6df140 0000808000000000 ffff880029882800
Nov 21 08:29:02 XenServer kernel: [ 1988.241193] Call Trace:
Nov 21 08:29:02 XenServer kernel: [ 1988.241201]  [<ffffffff8027856a>] ? 
exit_mmap+0x7b/0xf7
Nov 21 08:29:02 XenServer kernel: [ 1988.241205]  [<ffffffff8022a739>] ? 
mmput+0x2c/0xc0
Nov 21 08:29:02 XenServer kernel: [ 1988.241209]  [<ffffffff8028f1a3>] ? 
flush_old_exec+0x6df/0xa45
Nov 21 08:29:02 XenServer kernel: [ 1988.241214]  [<ffffffff8028ab60>] ? 
vfs_read+0x11e/0x152
Nov 21 08:29:02 XenServer kernel: [ 1988.241219]  [<ffffffff802bd287>] ? 
load_elf_binary+0x341/0x16c4
Nov 21 08:29:02 XenServer kernel: [ 1988.241224]  [<ffffffff8028ddc2>] ? 
get_arg_page+0x46/0xa5
Nov 21 08:29:02 XenServer kernel: [ 1988.241228]  [<ffffffff8028e0b1>] ? 
copy_strings+0x1b8/0x1c9
Nov 21 08:29:02 XenServer kernel: [ 1988.241233]  [<ffffffff8028e1aa>] ? 
search_binary_handler+0xb0/0x1e5
Nov 21 08:29:02 XenServer kernel: [ 1988.241237]  [<ffffffff8028f7f3>] ? 
do_execve+0x168/0x215
Nov 21 08:29:02 XenServer kernel: [ 1988.241241]  [<ffffffff80209425>] ? 
sys_execve+0x35/0x4c
Nov 21 08:29:02 XenServer kernel: [ 1988.241245]  [<ffffffff8020b970>] ? 
stub_execve+0x40/0x70
Nov 21 08:29:02 XenServer kernel: [ 1988.241251] 
Nov 21 08:29:02 XenServer kernel: [ 1988.241252] 
Nov 21 08:29:02 XenServer kernel: [ 1988.241253] Code: 24 50 48 81 e1 00 00 00 
c0 48 89 ca 48 ff c8 48 ff ca 48 39 c2 48 8b 44 24 50 48 8b 54 24 60 48 0f 42 
c1 48 89 84 24 88 00 00 00 <48> 8b 32 48 85 f6 74 1f 48 b8 fb 0f 00 00 00 c0 ff 
ff 48 21 f0 
Nov 21 08:29:02 XenServer kernel: [ 1988.241280] RIP  [<ffffffff80272db3>] 
unmap_vmas+0x2a5/0xa46
Nov 21 08:29:02 XenServer kernel: [ 1988.241284]  RSP <ffff8800483f7bf8>
Nov 21 08:29:02 XenServer kernel: [ 1988.241285] CR2: ffff9d5555555000
Nov 21 08:29:02 XenServer kernel: [ 1988.241290] ---[ end trace 
bae1468abd8c54a0 ]---

















Nov 21 09:34:33 XenServer kernel: [  198.390683] blkback: ring-ref 2047, 
event-channel 4, protocol 1 (x86_64-abi)
Nov 21 09:34:33 XenServer kernel: [  198.395924] blkback: ring-ref 2046, 
event-channel 5, protocol 1 (x86_64-abi)
Nov 21 09:34:35 XenServer kernel: [  200.476199] tap7.0: no IPv6 routers present
Nov 21 09:34:35 XenServer kernel: [  200.896201] vif7.0: no IPv6 routers present
Nov 21 09:34:38 XenServer kernel: [  203.160335] frontend_changed: 
backend/vbd/8/51712: prepare for reconnect
Nov 21 09:34:38 XenServer kernel: [  203.161977] frontend_changed: 
backend/vbd/8/51728: prepare for reconnect
Nov 21 09:34:38 XenServer kernel: [  203.814316] blkback: ring-ref 8, 
event-channel 9, protocol 1 (x86_64-abi)
Nov 21 09:34:38 XenServer kernel: [  203.816889] blkback: ring-ref 9, 
event-channel 10, protocol 1 (x86_64-abi)
Nov 21 09:34:43 XenServer kernel: [  208.200239] vif8.0: no IPv6 routers present
Nov 21 09:35:01 XenServer /USR/SBIN/CRON[5232]: (root) CMD ([ -x 
/usr/lib/sysstat/sa1 ] && { [ -r "$DEFAULT" ] && . "$DEFAULT" ; [ "$ENABLED" = 
"true" ] && exec /usr/lib/sysstat/sa1 $SA1_OPTIONS 1 1 ; })
Nov 21 09:35:35 XenServer kernel: [  260.623715] BUG: unable to handle kernel 
paging request at ffffbfff8020b528
Nov 21 09:35:35 XenServer kernel: [  260.623722] IP: [<ffffbfff8020b528>]
Nov 21 09:35:35 XenServer kernel: [  260.623727] PGD 0 
Nov 21 09:35:35 XenServer kernel: [  260.623729] Oops: 0010 [1] SMP 
Nov 21 09:35:35 XenServer kernel: [  260.623732] CPU 0 
Nov 21 09:35:35 XenServer kernel: [  260.623734] Modules linked in: i915 drm 
xt_tcpudp nf_conntrack_ipv4 xt_state nf_conntrack xt_physdev iptable_filter 
ip_tables x_tables tun bridge ipv6 xfs fuse loop i2c_i801 serio_raw i2c_core 
shpchp pci_hotplug psmouse intel_agp pcspkr button evdev ext3 jbd mbcache 
dm_mirror dm_log dm_snapshot dm_mod raid10 sd_mod ata_generic ata_piix libata 
scsi_mod dock ehci_hcd uhci_hcd ide_pci_generic ide_core e1000e thermal 
processor fan thermal_sys raid1 md_mod [last unloaded: scsi_wait_scan]
Nov 21 09:35:35 XenServer kernel: [  260.623772] Pid: 5230, comm: qemu-dm Not 
tainted 2.6.26-2-xen-amd64 #1
Nov 21 09:35:35 XenServer kernel: [  260.623775] RIP: e030:[<ffffbfff8020b528>] 
 [<ffffbfff8020b528>]
Nov 21 09:35:35 XenServer kernel: [  260.623778] RSP: e02b:ffff88004f055f88  
EFLAGS: 00010296
Nov 21 09:35:35 XenServer kernel: [  260.623780] RAX: 0000000000000000 RBX: 
0000000000000000 RCX: ffff88013e4cbcc8
Nov 21 09:35:35 XenServer kernel: [  260.623782] RDX: 0000000000000000 RSI: 
0000000000000000 RDI: ffff88004f055d90
Nov 21 09:35:35 XenServer kernel: [  260.623784] RBP: 0000000000000000 R08: 
0000000000000000 R09: ffff8801ef9ae290
Nov 21 09:35:35 XenServer kernel: [  260.623786] R10: 0000000000000000 R11: 
ffff8801ef9ae288 R12: 0000000000004808
Nov 21 09:35:35 XenServer kernel: [  260.623788] R13: 0000000040918100 R14: 
ffffffffffffff92 R15: 0000000000001000
Nov 21 09:35:35 XenServer kernel: [  260.623792] FS:  00007f25057376e0(0063) 
GS:ffffffff8053a000(0000) knlGS:0000000000000000
Nov 21 09:35:35 XenServer kernel: [  260.623794] CS:  e033 DS: 0000 ES: 0000
Nov 21 09:35:35 XenServer kernel: [  260.623796] DR0: 0000000000000000 DR1: 
0000000000000000 DR2: 0000000000000000
Nov 21 09:35:35 XenServer kernel: [  260.623799] DR3: 0000000000000000 DR6: 
00000000ffff0ff0 DR7: 0000000000000400
Nov 21 09:35:35 XenServer kernel: [  260.623801] Process qemu-dm (pid: 5230, 
threadinfo ffff88004f054000, task ffff8801ef9ae240)
Nov 21 09:35:35 XenServer kernel: [  260.623803] Stack:  0000000000000202 
0000000040918028 0000000000002403 0000000000a93f80
Nov 21 09:35:35 XenServer kernel: [  260.623808]  00000000000000ca 
ffffffff8020b4c0 0000000000004808 0000000000000080
Nov 21 09:35:35 XenServer kernel: [  260.623812]  0000000000a93fc4 
00000000000000ca 00007f2504e81fad 000000000000e033
Nov 21 09:35:35 XenServer kernel: [  260.623815] Call Trace:
Nov 21 09:35:35 XenServer kernel: [  260.623820]  [<ffffffff8020b4c0>] 
system_call+0x0/0x6d
Nov 21 09:35:35 XenServer kernel: [  260.623823] 
Nov 21 09:35:35 XenServer kernel: [  260.623824] 
Nov 21 09:35:35 XenServer kernel: [  260.623825] Code:  Bad RIP value.
Nov 21 09:35:35 XenServer kernel: [  260.623829] RIP  [<ffffbfff8020b528>]
Nov 21 09:35:35 XenServer kernel: [  260.623832]  RSP <ffff88004f055f88>
Nov 21 09:35:35 XenServer kernel: [  260.623833] CR2: ffffbfff8020b528
Nov 21 09:35:35 XenServer kernel: [  260.623837] ---[ end trace 
e2a310b822a5915a ]---














Nov 21 10:05:30 XenServer logger: /etc/xen/scripts/vif-bridge: iptables setup 
failed. This may affect guest networking.
Nov 21 10:05:30 XenServer logger: /etc/xen/scripts/vif-bridge: Successful 
vif-bridge online for vif4.0, bridge eth0.
Nov 21 10:05:30 XenServer logger: /etc/xen/scripts/vif-bridge: Writing 
backend/vif/4/0/hotplug-status connected to xenstore.
Nov 21 10:05:30 XenServer logger: /etc/xen/scripts/block: Writing 
backend/vbd/4/5696/physical-device fd:3 to xenstore.
Nov 21 10:05:30 XenServer logger: /etc/xen/scripts/block: Writing 
backend/vbd/4/5696/hotplug-status connected to xenstore.
Nov 21 10:05:31 XenServer logger: /etc/xen/scripts/block: Writing 
backend/vbd/4/832/physical-device fd:2 to xenstore.
Nov 21 10:05:31 XenServer logger: /etc/xen/scripts/block: Writing 
backend/vbd/4/832/hotplug-status connected to xenstore.
Nov 21 10:05:32 XenServer kernel: [   61.277009] tap3.0: no IPv6 routers present
Nov 21 10:05:32 XenServer kernel: [   61.740948] vif3.0: no IPv6 routers present
Nov 21 10:05:38 XenServer acpid: client connected from 4579[0:0]
Nov 21 10:05:39 XenServer kernel: [   68.737765] tap4.0: no IPv6 routers present
Nov 21 10:05:40 XenServer kernel: [   69.291322] vif4.0: no IPv6 routers present
Nov 21 10:05:42 XenServer kernel: [   71.463196] [drm] Initialized drm 1.1.0 
20060810
Nov 21 10:05:42 XenServer kernel: [   71.493805] ACPI: PCI Interrupt 
0000:00:02.0[A] -> GSI 16 (level, low) -> IRQ 16
Nov 21 10:05:42 XenServer kernel: [   71.493816] PCI: Setting latency timer of 
device 0000:00:02.0 to 64
Nov 21 10:05:42 XenServer kernel: [   71.493902] [drm] Initialized i915 1.6.0 
20060119 on minor 0
Nov 21 10:05:43 XenServer kernel: [   72.025307] set status page addr 0x00033000
Nov 21 10:15:01 XenServer /USR/SBIN/CRON[5635]: (root) CMD ([ -x 
/usr/lib/sysstat/sa1 ] && { [ -r "$DEFAULT" ] && . "$DEFAULT" ; [ "$ENABLED" = 
"true" ] && exec /usr/lib/sysstat/sa1 $SA1_OPTIONS 1 1 ; })
Nov 21 10:15:32 XenServer kernel: [  661.563302] xm[5690]: segfault at 
3fde872c0218 ip 4bce31 sp 7fff8f340c20 error 4 in python2.5[400000+125000]
Nov 21 10:15:34 XenServer kernel: [  663.779335] xm[5694]: segfault at 
3f53e4415838 ip 4bce31 sp 7fffed21c830 error 4 in python2.5[400000+125000]
Nov 21 10:15:36 XenServer kernel: [  664.842361] xm[5695]: segfault at 
3f60664b1738 ip 4bce31 sp 7fff6e4b0ad0 error 4 in python2.5[400000+125000]
Nov 21 10:15:37 XenServer kernel: [  666.120019] Bad page state in process 
'md0_raid10'
Nov 21 10:15:37 XenServer kernel: [  666.120020] page:ffff8800046aa378 
flags:0x4000000000000000 mapping:0000000000000000 mapcount:-16384 count:0
Nov 21 10:15:37 XenServer kernel: [  666.120030] Trying to fix it up, but a 
reboot is needed
Nov 21 10:15:37 XenServer kernel: [  666.120032] Backtrace:
Nov 21 10:15:37 XenServer kernel: [  666.120144] Pid: 1227, comm: md0_raid10 
Not tainted 2.6.26-2-xen-amd64 #1
Nov 21 10:15:37 XenServer kernel: [  666.120147] 
Nov 21 10:15:37 XenServer kernel: [  666.120147] Call Trace:
Nov 21 10:15:37 XenServer kernel: [  666.120160]  [<ffffffff802684d8>] 
bad_page+0x6b/0x95
Nov 21 10:15:37 XenServer kernel: [  666.120164]  [<ffffffff80268c27>] 
free_hot_cold_page+0x89/0x1ba
Nov 21 10:15:37 XenServer kernel: [  666.120170]  [<ffffffffa0100b43>] 
:raid10:r10buf_pool_free+0x3a/0x7e
Nov 21 10:15:37 XenServer kernel: [  666.120175]  [<ffffffffa00fe930>] 
:raid10:put_buf+0x14/0x1d
Nov 21 10:15:37 XenServer kernel: [  666.120179]  [<ffffffffa00ff866>] 
:raid10:raid10d+0x3be/0x9fb
Nov 21 10:15:37 XenServer kernel: [  666.120185]  [<ffffffff80434fce>] 
schedule_timeout+0x1e/0xad
Nov 21 10:15:37 XenServer kernel: [  666.120195]  [<ffffffffa00057d2>] 
:md_mod:md_thread+0xd7/0xed
Nov 21 10:15:37 XenServer kernel: [  666.120200]  [<ffffffff8023f6c1>] 
autoremove_wake_function+0x0/0x2e
Nov 21 10:15:37 XenServer kernel: [  666.120207]  [<ffffffffa00056fb>] 
:md_mod:md_thread+0x0/0xed
Nov 21 10:15:37 XenServer kernel: [  666.120209]  [<ffffffff8023f593>] 
kthread+0x47/0x74
Nov 21 10:15:37 XenServer kernel: [  666.120213]  [<ffffffff802283a8>] 
schedule_tail+0x27/0x5c
Nov 21 10:15:37 XenServer kernel: [  666.120216]  [<ffffffff8020be28>] 
child_rip+0xa/0x12
Nov 21 10:15:37 XenServer kernel: [  666.120222]  [<ffffffff8023f54c>] 
kthread+0x0/0x74
Nov 21 10:15:37 XenServer kernel: [  666.120224]  [<ffffffff8020be1e>] 
child_rip+0x0/0x12
Nov 21 10:15:37 XenServer kernel: [  666.120227] 
Nov 21 10:15:37 XenServer kernel: [  666.178775] xm[5697]: segfault at 
3f99e29c3858 ip 4bd88b sp 7fffea9f4320 error 4 in python2.5[400000+125000]
Nov 21 10:15:38 XenServer kernel: [  667.381939] xm[5704]: segfault at 8 ip 
4bd0b2 sp 7fff2f83a218 error 6 in python2.5[400000+125000]
Nov 21 10:15:39 XenServer kernel: [  668.504203] xm[5707]: segfault at 
3f7c752acab8 ip 4bce31 sp 7fff7d302bf0 error 4 in python2.5[400000+125000]
Nov 21 10:15:40 XenServer kernel: [  669.548418] xm[5709]: segfault at 
2f5550598488 ip 4bce31 sp 7fff593b09d0 error 4 in python2.5[400000+125000]
Nov 21 10:15:41 XenServer kernel: [  670.563445] xm[5710]: segfault at 
6f29db1029f0 ip 453fa9 sp 7fffe312d670 error 6 in python2.5[400000+125000]
Nov 21 10:15:42 XenServer kernel: [  670.901687] Bad page state in process 
'md0_raid10'
Nov 21 10:15:42 XenServer kernel: [  670.901689] page:ffff8800047ab3f8 
flags:0x4000000000000000 mapping:0000000000000000 mapcount:-16896 count:0
Nov 21 10:15:42 XenServer kernel: [  670.901696] Trying to fix it up, but a 
reboot is needed
Nov 21 10:15:42 XenServer kernel: [  670.901697] Backtrace:
Nov 21 10:15:42 XenServer kernel: [  670.901700] Pid: 1227, comm: md0_raid10 
Tainted: G    B     2.6.26-2-xen-amd64 #1
Nov 21 10:15:42 XenServer kernel: [  670.901703] 
Nov 21 10:15:42 XenServer kernel: [  670.901703] Call Trace:
Nov 21 10:15:42 XenServer kernel: [  670.901709]  [<ffffffff802290ab>] 
dequeue_task_fair+0x1d/0x37
Nov 21 10:15:42 XenServer kernel: [  670.901719]  [<ffffffff802684d8>] 
bad_page+0x6b/0x95
Nov 21 10:15:42 XenServer kernel: [  670.901722]  [<ffffffff80268c27>] 
free_hot_cold_page+0x89/0x1ba
Nov 21 10:15:42 XenServer kernel: [  670.901729]  [<ffffffffa0100b43>] 
:raid10:r10buf_pool_free+0x3a/0x7e
Nov 21 10:15:42 XenServer kernel: [  670.901734]  [<ffffffffa00fe930>] 
:raid10:put_buf+0x14/0x1d
Nov 21 10:15:42 XenServer kernel: [  670.901738]  [<ffffffffa00ff866>] 
:raid10:raid10d+0x3be/0x9fb
Nov 21 10:15:42 XenServer kernel: [  670.901744]  [<ffffffff80434fce>] 
schedule_timeout+0x1e/0xad
Nov 21 10:15:42 XenServer kernel: [  670.901754]  [<ffffffffa00057d2>] 
:md_mod:md_thread+0xd7/0xed
Nov 21 10:15:42 XenServer kernel: [  670.901758]  [<ffffffff8023f6c1>] 
autoremove_wake_function+0x0/0x2e
Nov 21 10:15:42 XenServer kernel: [  670.901766]  [<ffffffffa00056fb>] 
:md_mod:md_thread+0x0/0xed
Nov 21 10:15:42 XenServer kernel: [  670.901768]  [<ffffffff8023f593>] 
kthread+0x47/0x74
Nov 21 10:15:42 XenServer kernel: [  670.901772]  [<ffffffff802283a8>] 
schedule_tail+0x27/0x5c
Nov 21 10:15:42 XenServer kernel: [  670.901775]  [<ffffffff8020be28>] 
child_rip+0xa/0x12
Nov 21 10:15:42 XenServer kernel: [  670.901780]  [<ffffffff8023f54c>] 
kthread+0x0/0x74
Nov 21 10:15:42 XenServer kernel: [  670.901783]  [<ffffffff8020be1e>] 
child_rip+0x0/0x12
Nov 21 10:15:42 XenServer kernel: [  670.901785] 
Nov 21 10:15:42 XenServer kernel: [  671.674402] xm[5715]: segfault at 
3fddd1ff6128 ip 4bce31 sp 7fffda029ff0 error 4 in python2.5[400000+125000]
Nov 21 10:15:43 XenServer kernel: [  672.347146] Bad page state in process 
'md0_raid10'
Nov 21 10:15:43 XenServer kernel: [  672.347148] page:ffff8800046a8af8 
flags:0x4000000000000000 mapping:0000000000000000 mapcount:-16384 count:0
Nov 21 10:15:43 XenServer kernel: [  672.347155] Trying to fix it up, but a 
reboot is needed
Nov 21 10:15:43 XenServer kernel: [  672.347156] Backtrace:
Nov 21 10:15:43 XenServer kernel: [  672.347159] Pid: 1227, comm: md0_raid10 
Tainted: G    B     2.6.26-2-xen-amd64 #1
Nov 21 10:15:43 XenServer kernel: [  672.347161] 
Nov 21 10:15:43 XenServer kernel: [  672.347162] Call Trace:
Nov 21 10:15:43 XenServer kernel: [  672.347167]  [<ffffffff802290ab>] 
dequeue_task_fair+0x1d/0x37
Nov 21 10:15:43 XenServer kernel: [  672.347177]  [<ffffffff802684d8>] 
bad_page+0x6b/0x95
Nov 21 10:15:43 XenServer kernel: [  672.347180]  [<ffffffff80268c27>] 
free_hot_cold_page+0x89/0x1ba
Nov 21 10:15:43 XenServer kernel: [  672.347187]  [<ffffffffa0100b43>] 
:raid10:r10buf_pool_free+0x3a/0x7e
Nov 21 10:15:43 XenServer kernel: [  672.347192]  [<ffffffffa00fe930>] 
:raid10:put_buf+0x14/0x1d
Nov 21 10:15:43 XenServer kernel: [  672.347195]  [<ffffffffa00ff866>] 
:raid10:raid10d+0x3be/0x9fb
Nov 21 10:15:43 XenServer kernel: [  672.347202]  [<ffffffff80434fce>] 
schedule_timeout+0x1e/0xad
Nov 21 10:15:43 XenServer kernel: [  672.347212]  [<ffffffffa00057d2>] 
:md_mod:md_thread+0xd7/0xed
Nov 21 10:15:43 XenServer kernel: [  672.347216]  [<ffffffff8023f6c1>] 
autoremove_wake_function+0x0/0x2e
Nov 21 10:15:43 XenServer kernel: [  672.347223]  [<ffffffffa00056fb>] 
:md_mod:md_thread+0x0/0xed
Nov 21 10:15:43 XenServer kernel: [  672.347226]  [<ffffffff8023f593>] 
kthread+0x47/0x74
Nov 21 10:15:43 XenServer kernel: [  672.347229]  [<ffffffff802283a8>] 
schedule_tail+0x27/0x5c
Nov 21 10:15:43 XenServer kernel: [  672.347232]  [<ffffffff8020be28>] 
child_rip+0xa/0x12
Nov 21 10:15:43 XenServer kernel: [  672.347238]  [<ffffffff8023f54c>] 
kthread+0x0/0x74
Nov 21 10:15:43 XenServer kernel: [  672.347240]  [<ffffffff8020be1e>] 
child_rip+0x0/0x12
Nov 21 10:15:43 XenServer kernel: [  672.347242] 
Nov 21 10:15:43 XenServer kernel: [  672.708971] xm[5720]: segfault at 
3f9e2f0b1150 ip 4bce31 sp 7fff37100720 error 4 in python2.5[400000+125000]
Nov 21 10:15:44 XenServer kernel: [  673.367929] Bad page state in process 
'md0_raid10'
Nov 21 10:15:44 XenServer kernel: [  673.367930] page:ffff8800046ae278 
flags:0x4000000000000000 mapping:0000000000000000 mapcount:-16384 count:0
Nov 21 10:15:44 XenServer kernel: [  673.367938] Trying to fix it up, but a 
reboot is needed
Nov 21 10:15:44 XenServer kernel: [  673.367939] Backtrace:
Nov 21 10:15:44 XenServer kernel: [  673.367942] Pid: 1227, comm: md0_raid10 
Tainted: G    B     2.6.26-2-xen-amd64 #1
Nov 21 10:15:44 XenServer kernel: [  673.367944] 
Nov 21 10:15:44 XenServer kernel: [  673.367945] Call Trace:
Nov 21 10:15:44 XenServer kernel: [  673.367950]  [<ffffffff802290ab>] 
dequeue_task_fair+0x1d/0x37
Nov 21 10:15:44 XenServer kernel: [  673.367961]  [<ffffffff802684d8>] 
bad_page+0x6b/0x95
Nov 21 10:15:44 XenServer kernel: [  673.367964]  [<ffffffff80268c27>] 
free_hot_cold_page+0x89/0x1ba
Nov 21 10:15:44 XenServer kernel: [  673.367971]  [<ffffffffa0100b43>] 
:raid10:r10buf_pool_free+0x3a/0x7e
Nov 21 10:15:44 XenServer kernel: [  673.367976]  [<ffffffffa00fe930>] 
:raid10:put_buf+0x14/0x1d
Nov 21 10:15:44 XenServer kernel: [  673.367980]  [<ffffffffa00ff866>] 
:raid10:raid10d+0x3be/0x9fb
Nov 21 10:15:44 XenServer kernel: [  673.367986]  [<ffffffff80434fce>] 
schedule_timeout+0x1e/0xad
Nov 21 10:15:44 XenServer kernel: [  673.367996]  [<ffffffffa00057d2>] 
:md_mod:md_thread+0xd7/0xed
Nov 21 10:15:44 XenServer kernel: [  673.368000]  [<ffffffff8023f6c1>] 
autoremove_wake_function+0x0/0x2e
Nov 21 10:15:44 XenServer kernel: [  673.368007]  [<ffffffffa00056fb>] 
:md_mod:md_thread+0x0/0xed
Nov 21 10:15:44 XenServer kernel: [  673.368010]  [<ffffffff8023f593>] 
kthread+0x47/0x74
Nov 21 10:15:44 XenServer kernel: [  673.368013]  [<ffffffff802283a8>] 
schedule_tail+0x27/0x5c
Nov 21 10:15:44 XenServer kernel: [  673.368017]  [<ffffffff8020be28>] 
child_rip+0xa/0x12
Nov 21 10:15:44 XenServer kernel: [  673.368022]  [<ffffffff8023f54c>] 
kthread+0x0/0x74
Nov 21 10:15:44 XenServer kernel: [  673.368025]  [<ffffffff8020be1e>] 
child_rip+0x0/0x12
Nov 21 10:15:44 XenServer kernel: [  673.368027] 
Nov 21 10:15:44 XenServer kernel: [  673.581138] Bad page state in process 
'swapper'
Nov 21 10:15:44 XenServer kernel: [  673.581140] page:ffff8800046abf78 
flags:0x4000000000000000 mapping:0000000000000000 mapcount:-20992 count:0
Nov 21 10:15:44 XenServer kernel: [  673.581149] Trying to fix it up, but a 
reboot is needed
Nov 21 10:15:44 XenServer kernel: [  673.581151] Backtrace:
Nov 21 10:15:44 XenServer kernel: [  673.581155] Pid: 0, comm: swapper Tainted: 
G    B     2.6.26-2-xen-amd64 #1
Nov 21 10:15:44 XenServer kernel: [  673.581158] 
Nov 21 10:15:44 XenServer kernel: [  673.581159] Call Trace:
Nov 21 10:15:44 XenServer kernel: [  673.581162]  <IRQ>  [<ffffffff802684d8>] 
bad_page+0x6b/0x95
Nov 21 10:15:44 XenServer kernel: [  673.581181]  [<ffffffff80268c27>] 
free_hot_cold_page+0x89/0x1ba
Nov 21 10:15:44 XenServer kernel: [  673.581190]  [<ffffffffa0100b43>] 
:raid10:r10buf_pool_free+0x3a/0x7e
Nov 21 10:15:44 XenServer kernel: [  673.581197]  [<ffffffffa00fe930>] 
:raid10:put_buf+0x14/0x1d
Nov 21 10:15:44 XenServer kernel: [  673.581203]  [<ffffffffa00fff4b>] 
:raid10:end_sync_write+0xa8/0xff
Nov 21 10:15:44 XenServer kernel: [  673.581211]  [<ffffffff802ff45d>] 
__end_that_request_first+0x21c/0x33d
Nov 21 10:15:44 XenServer kernel: [  673.581217]  [<ffffffff802ffe1e>] 
blk_end_io+0x26/0x9a
Nov 21 10:15:44 XenServer kernel: [  673.581238]  [<ffffffffa006990a>] 
:scsi_mod:scsi_end_request+0x27/0x82
Nov 21 10:15:44 XenServer kernel: [  673.581264]  [<ffffffffa006a64b>] 
:scsi_mod:scsi_io_completion+0x1c0/0x3bf
Nov 21 10:15:44 XenServer kernel: [  673.581270]  [<ffffffff802fef58>] 
blk_done_softirq+0x97/0xa5
Nov 21 10:15:44 XenServer kernel: [  673.581273]  [<ffffffff8037d1ff>] 
startup_pirq+0xfe/0x109
Nov 21 10:15:44 XenServer kernel: [  673.581277]  [<ffffffff80231cb8>] 
__do_softirq+0x77/0x103
Nov 21 10:15:44 XenServer kernel: [  673.581281]  [<ffffffff8020c13c>] 
call_softirq+0x1c/0x28
Nov 21 10:15:44 XenServer kernel: [  673.581284]  [<ffffffff8020e092>] 
do_softirq+0x55/0xbb
Nov 21 10:15:44 XenServer kernel: [  673.581287]  [<ffffffff8020e175>] 
do_IRQ+0x7d/0x9a
Nov 21 10:15:44 XenServer kernel: [  673.581291]  [<ffffffff8037dc18>] 
evtchn_do_upcall+0x13c/0x1fc
Nov 21 10:15:44 XenServer kernel: [  673.581296]  [<ffffffff8020bbde>] 
do_hypervisor_callback+0x1e/0x30
Nov 21 10:15:44 XenServer kernel: [  673.581298]  <EOI>  [<ffffffff8020e79d>] 
xen_safe_halt+0x90/0xa6
Nov 21 10:15:44 XenServer kernel: [  673.581307]  [<ffffffff8020a0c8>] 
xen_idle+0x2e/0x66
Nov 21 10:15:44 XenServer kernel: [  673.581310]  [<ffffffff80209cd6>] 
cpu_idle+0x97/0xb9
Nov 21 10:15:44 XenServer kernel: [  673.581315] 
Nov 21 10:15:44 XenServer kernel: [  673.707454] Bad page state in process 
'md0_raid10'
Nov 21 10:15:44 XenServer kernel: [  673.707456] page:ffff8800047a7178 
flags:0x4000000000000000 mapping:0000000000000000 mapcount:-16384 count:0
Nov 21 10:15:44 XenServer kernel: [  673.707462] Trying to fix it up, but a 
reboot is needed
Nov 21 10:15:44 XenServer kernel: [  673.707463] Backtrace:
Nov 21 10:15:44 XenServer kernel: [  673.707469] Pid: 1227, comm: md0_raid10 
Tainted: G    B     2.6.26-2-xen-amd64 #1
Nov 21 10:15:44 XenServer kernel: [  673.707471] 
Nov 21 10:15:44 XenServer kernel: [  673.707472] Call Trace:
Nov 21 10:15:44 XenServer kernel: [  673.707477]  [<ffffffff802290ab>] 
dequeue_task_fair+0x1d/0x37
Nov 21 10:15:44 XenServer kernel: [  673.707487]  [<ffffffff802684d8>] 
bad_page+0x6b/0x95
Nov 21 10:15:44 XenServer kernel: [  673.707490]  [<ffffffff80268c27>] 
free_hot_cold_page+0x89/0x1ba
Nov 21 10:15:44 XenServer kernel: [  673.707497]  [<ffffffffa0100b43>] 
:raid10:r10buf_pool_free+0x3a/0x7e
Nov 21 10:15:44 XenServer kernel: [  673.707502]  [<ffffffffa00fe930>] 
:raid10:put_buf+0x14/0x1d
Nov 21 10:15:44 XenServer kernel: [  673.707505]  [<ffffffffa00ff866>] 
:raid10:raid10d+0x3be/0x9fb
Nov 21 10:15:44 XenServer kernel: [  673.707512]  [<ffffffff80434fce>] 
schedule_timeout+0x1e/0xad
Nov 21 10:15:44 XenServer kernel: [  673.707527]  [<ffffffffa00057d2>] 
:md_mod:md_thread+0xd7/0xed
Nov 21 10:15:44 XenServer kernel: [  673.707531]  [<ffffffff8023f6c1>] 
autoremove_wake_function+0x0/0x2e
Nov 21 10:15:44 XenServer kernel: [  673.707538]  [<ffffffffa00056fb>] 
:md_mod:md_thread+0x0/0xed
Nov 21 10:15:44 XenServer kernel: [  673.707541]  [<ffffffff8023f593>] 
kthread+0x47/0x74
Nov 21 10:15:44 XenServer kernel: [  673.707544]  [<ffffffff802283a8>] 
schedule_tail+0x27/0x5c
Nov 21 10:15:44 XenServer kernel: [  673.707548]  [<ffffffff8020be28>] 
child_rip+0xa/0x12
Nov 21 10:15:44 XenServer kernel: [  673.707553]  [<ffffffff8023f54c>] 
kthread+0x0/0x74
Nov 21 10:15:44 XenServer kernel: [  673.707556]  [<ffffffff8020be1e>] 
child_rip+0x0/0x12
Nov 21 10:15:44 XenServer kernel: [  673.707558] 
Nov 21 10:15:44 XenServer kernel: [  673.726326] xm[5730]: segfault at 
3f7eb379bc60 ip 453fa9 sp 7fffbb7d47b0 error 6 in python2.5[400000+125000]
Nov 21 10:15:44 XenServer kernel: [  673.732340] Bad page state in process 
'rsyslogd'
Nov 21 10:15:44 XenServer kernel: [  673.732341] page:ffff8800047a1678 
flags:0x4000000000000000 mapping:0000000000000000 mapcount:-16384 count:0
Nov 21 10:15:44 XenServer kernel: [  673.732347] Trying to fix it up, but a 
reboot is needed
Nov 21 10:15:44 XenServer kernel: [  673.732348] Backtrace:
Nov 21 10:15:44 XenServer kernel: [  673.732351] Pid: 5731, comm: rsyslogd 
Tainted: G    B     2.6.26-2-xen-amd64 #1
Nov 21 10:15:44 XenServer kernel: [  673.732353] 
Nov 21 10:15:44 XenServer kernel: [  673.732354] Call T2ace:
Nov 21 10:15:44 XenServer kernel: [  673.732367]  [<ffffffff802684d8>] 
bad_page+0x6b/0x95
Nov 21 10:15:44 XenServer kernel: [  673.732370]  [<ffffffff802686c9>] 
__free_pages_ok+0x89/0x311
Nov 21 10:15:44 XenServer kernel: [  673.732374]  [<ffffffff8022a6f5>] 
__mmdrop+0x1a/0x32
Nov 21 10:15:44 XenServer kernel: [  673.732377]  [<ffffffff8022ff14>] 
do_exit+0x25a/0x6c0
Nov 21 10:15:44 XenServer kernel: [  673.732382]  [<ffffffff80230420>] 
do_group_exit+0xa6/0xdc
Nov 21 10:15:44 XenServer kernel: [  673.732385]  [<ffffffff80230468>] 
sys_exit_group+0x12/0x17
Nov 21 10:15:44 XenServer kernel: [  673.732388]  [<ffffffff8020b528>] 
system_call+0x68/0x6d
Nov 21 10:15:44 XenServer kernel: [  673.732391]  [<ffffffff8020b4c0>] 
system_call+0x0/0x6d
Nov 21 10:15:44 XenServer kernel: [  673.732395] 
Nov 21 10:15:44 XenServer kernel: [  673.774358] Bad page state in process 
'swapper'
Nov 21 10:15:44 XenServer kernel: [  673.774361] page:ffff8800047a90f8 
flags:0x4000000000000000 mapping:0000000000000000 mapcount:-16384 count:0
Nov 21 10:15:44 XenServer kernel: [  673.774370] Trying to fix it up, but a 
reboot is needed
Nov 21 10:15:44 XenServer kernel: [  673.774371] Backtrace:
Nov 21 10:15:44 XenServer kernel: [  673.774376] Pid: 0, comm: swapper Tainted: 
G    B     2.6.26-2-xen-amd64 #1
Nov 21 10:15:44 XenServer kernel: [  673.774379] 
Nov 21 10:15:44 XenServer kernel: [  673.774380] Call Trace:
Nov 21 10:15:44 XenServer kernel: [  673.774382]  <IRQ>  [<ffffffff802684d8>] 
bad_page+0x6b/0x95
Nov 21 10:15:44 XenServer kernel: [  673.774400]  [<ffffffff80268c27>] 
free_hot_cold_page+0x89/0x1ba
Nov 21 10:15:44 XenServer kernel: [  673.774409]  [<ffffffffa0100b43>] 
:raid10:r10buf_pool_free+0x3a/0x7e
Nov 21 10:15:44 XenServer kernel: [  673.774417]  [<ffffffffa00fe930>] 
:raid10:put_buf+0x14/0x1d
Nov 21 10:15:44 XenServer kernel: [  673.774422]  [<ffffffffa00fff4b>] 
:raid10:end_sync_write+0xa8/0xff
Nov 21 10:15:44 XenServer kernel: [  673.774438]  [<ffffffff802ff45d>] 
__end_that_request_first+0x21c/0x33d
Nov 21 10:15:44 XenServer kernel: [  673.774442]  [<ffffffff802ffe1e>] 
blk_end_io+0x26/0x9a
Nov 21 10:15:44 XenServer kernel: [  673.774457]  [<ffffffffa006990a>] 
:scsi_mod:scsi_end_request+0x27/0x82
Nov 21 10:15:44 XenServer kernel: [  673.774470]  [<ffffffffa006a64b>] 
:scsi_mod:scsi_io_completion+0x1c0/0x3bf
Nov 21 10:15:44 XenServer kernel: [  673.774475]  [<ffffffff802fef58>] 
blk_done_softirq+0x97/0xa5
Nov 21 10:15:44 XenServer kernel: [  673.774479]  [<ffffffff8037d1ff>] 
startup_pirq+0xfe/0x109
Nov 21 10:15:44 XenServer kernel: [  673.774483]  [<ffffffff80231cb8>] 
__do_softirq+0x77/0x103
Nov 21 10:15:44 XenServer kernel: [  673.774487]  [<ffffffff8020c13c>] 
call_softirq+0x1c/0x28
Nov 21 10:15:44 XenServer kernel: [  673.774490]  [<ffffffff8020e092>] 
do_softirq+0x55/0xbb
Nov 21 10:15:44 XenServer kernel: [  673.774493]  [<ffffffff8020e175>] 
do_IRQ+0x7d/0x9a
Nov 21 10:15:44 XenServer kernel: [  673.774496]  [<ffffffff8037dc18>] 
evtchn_do_upcall+0x13c/0x1fc
Nov 21 10:15:44 XenServer kernel: [  673.774501]  [<ffffffff8020bbde>] 
do_hypervisor_callback+0x1e/0x30
Nov 21 10:15:44 XenServer kernel: [  673.774503]  <EOI>  [<ffffffff8020e79d>] 
xen_safe_halt+0x90/0xa6
Nov 21 10:15:44 XenServer kernel: [  673.774513]  [<ffffffff8020a0c8>] 
xen_idle+0x2e/0x66
Nov 21 10:15:44 XenServer kernel: [  673.774515]  [<ffffffff80209cd6>] 
cpu_idle+0x97/0xb9
Nov 21 10:15:44 XenServer kernel: [  673.774521] 
Nov 21 10:15:44 XenServer kernel: [  673.778210] Bad page state in process 
'rsyslogd'
Nov 21 10:15:44 XenServer kernel: [  673.778212] page:ffff8800046a9c78 
flags:0x4000000000000000 mapping:0000000000000000 mapcount:-16384 count:0
Nov 21 10:15:44 XenServer kernel: [  673.778217] Trying to fix it up, but a 
reboot is needed
Nov 21 10:15:44 XenServer kernel: [  673.778218] Backtrace:
Nov 21 10:15:44 XenServer kernel: [  673.778221] Pid: 5740, comm: rsyslogd 
Tainted: G    B     2.6.26-2-xen-amd64 #1
Nov 21 10:15:44 XenServer kernel: [  673.778223] 
Nov 21 10:15:44 XenServer kernel: [  673.778224] Call Trace:
Nov 21 10:15:44 XenServer kernel: [  673.778225]  <IRQ>  [<ffffffff802684d8>] 
bad_page+0x6b/0x95
Nov 21 10:15:44 XenServer kernel: [  673.778236]  [<ffffffff80268c27>] 
free_hot_cold_page+0x89/0x1ba
Nov 21 10:15:44 XenServer kernel: [  673.778245]  [<ffffffffa0100b43>] 
:raid10:r10buf_pool_free+0x3a/0x7e
Nov 21 10:15:44 XenServer kernel: [  673.778250]  [<ffffffffa00fe930>] 
:raid10:put_buf+0x14/0x1d
Nov 21 10:15:44 XenServer kernel: [  673.778253]  [<ffffffffa00fff4b>] 
:raid10:end_sync_write+0xa8/0xff
Nov 21 10:15:44 XenServer kernel: [  673.778258]  [<ffffffff802ff45d>] 
__end_that_request_first+0x21c/0x33d
Nov 21 10:15:44 XenServer kernel: [  673.778263]  [<ffffffff802ffe1e>] 
blk_end_io+0x26/0x9a
Nov 21 10:15:44 XenServer kernel: [  673.778276]  [<ffffffffa006990a>] 
:scsi_mod:scsi_end_request+0x27/0x82
Nov 21 10:15:44 XenServer kernel: [  673.778289]  [<ffffffffa006a64b>] 
:scsi_mod:scsi_io_completion+0x1c0/0x3bf
Nov 21 10:15:44 XenServer kernel: [  673.778294]  [<ffffffff802fef58>] 
blk_done_softirq+0x97/0xa5
Nov 21 10:15:44 XenServer kernel: [  673.778298]  [<ffffffff8037d1ff>] 
startup_pirq+0xfe/0x109
Nov 21 10:15:44 XenServer kernel: [  673.778301]  [<ffffffff80231cb8>] 
__do_softirq+0x77/0x103
Nov 21 10:15:44 XenServer kernel: [  673.778305]  [<ffffffff8020c13c>] 
call_softirq+0x1c/0x28
Nov 21 10:15:44 XenServer kernel: [  673.778308]  [<ffffffff8020e092>] 
do_softirq+0x55/0xbb
Nov 21 10:15:44 XenServer kernel: [  673.778311]  [<ffffffff8020e175>] 
do_IRQ+0x7d/0x9a
Nov 21 10:15:44 XenServer kernel: [  673.778315]  [<ffffffff8037dc18>] 
evtchn_do_upcall+0x13c/0x1fc
Nov 21 10:15:44 XenServer kernel: [  673.778319]  [<ffffffff8020bbde>] 
do_hypervisor_callback+0x1e/0x30
Nov 21 10:15:44 XenServer kernel: [  673.778321]  <EOI>  [<ffffffff80272523>] 
do_wp_page+0x68a/0x789
Nov 21 10:15:44 XenServer kernel: [  673.778334]  [<ffffffff80276d10>] 
handle_mm_fault+0xbc8/0xc46
Nov 21 10:15:44 XenServer kernel: [  673.778338]  [<ffffffff80436a87>] 
error_exit+0x0/0x69
Nov 21 10:15:44 XenServer kernel: [  673.778343]  [<ffffffff8021819f>] 
do_page_fault+0xb69/0xf46
Nov 21 10:15:44 XenServer kernel: [  673.778348]  [<ffffffff80436a87>] 
error_exit+0x0/0x69
Nov 21 10:15:44 XenServer kernel: [  673.778354] 
Nov 21 10:15:45 XenServer kernel: [  674.758963] xm[5746]: segfault at 
3f6e089d09a0 ip 4bce31 sp 7fff10a3a2c0 error 4 in python2.5[400000+125000]
Nov 21 10:15:46 XenServer kernel: [  675.413175] BUG: unable to handle kernel 
paging request at ffffbfff8020b528
Nov 21 10:15:46 XenServer kernel: [  675.413182] IP: [<ffffbfff8020b528>]
Nov 21 10:15:46 XenServer kernel: [  675.413188] PGD 0 
Nov 21 10:15:46 XenServer kernel: [  675.413191] Oops: 0010 [1] SMP 
Nov 21 10:15:46 XenServer kernel: [  675.413193] CPU 0 
Nov 21 10:15:46 XenServer kernel: [  675.413196] Modules linked in: i915 drm 
xt_tcpudp nf_conntrack_ipv4 xt_state nf_conntrack xt_physdev iptable_filter 
ip_tables x_tables tun bridge ipv6 xfs fuse loop serio_raw i2c_i801 shpchp 
pci_hotplug i2c_core psmouse pcspkr intel_agp evdev button ext3 jbd mbcache 
dm_mirror dm_log dm_snapshot dm_mod raid10 sd_mod ata_piix ehci_hcd e1000e 
uhci_hcd ata_generic libata scsi_mod dock ide_pci_generic ide_core thermal 
processor fan thermal_sys raid1 md_mod [last unloaded: scsi_wait_scan]
Nov 21 10:15:46 XenServer kernel: [  675.413234] Pid: 4046, comm: qemu-dm 
Tainted: G    B     2.6.26-2-xen-amd64 #1
Nov 21 10:15:46 XenServer kernel: [  675.413236] RIP: e030:[<ffffbfff8020b528>] 
 [<ffffbfff8020b528>]
Nov 21 10:15:46 XenServer kernel: [  675.413239] RSP: e02b:ffff880180225f88  
EFLAGS: 00010282
Nov 21 10:15:46 XenServer kernel: [  675.413241] RAX: 0000000000000000 RBX: 
0000000000000000 RCX: 0000000000000000
Nov 21 10:15:46 XenServer kernel: [  675.413243] RDX: 0000000000000000 RSI: 
ffff880180225f38 RDI: 00007fff11ad0d90
Nov 21 10:15:46 XenServer kernel: [  675.413245] RBP: 0000000000000018 R08: 
ffff8801edab3528 R09: 0000000000000003
Nov 21 10:15:46 XenServer kernel: [  675.413247] R10: 0000000000007ff0 R11: 
ffffffff803efd92 R12: 000000000000000a
Nov 21 10:15:46 XenServer kernel: [  675.413249] R13: 0000000000000001 R14: 
0000000000000001 R15: 00007fff11ad0c80
Nov 21 10:15:46 XenServer kernel: [  675.413253] FS:  00007f0609abf6e0(0000) 
GS:ffffffff8053a000(0000) knlGS:0000000000000000
Nov 21 10:15:46 XenServer kernel: [  675.413256] CS:  e033 DS: 0000 ES: 0000
Nov 21 10:15:46 XenServer kernel: [  675.413258] DR0: 0000000000000000 DR1: 
0000000000000000 DR2: 0000000000000000
Nov 21 10:15:46 XenServer kernel: [  675.413260] DR3: 0000000000000000 DR6: 
00000000ffff0ff0 DR7: 0000000000000400
Nov 21 10:15:46 XenServer kernel: [  675.413263] Process qemu-dm (pid: 4046, 
threadinfo ffff880180224000, task ffff8801ed6cb240)
Nov 21 10:15:46 XenServer kernel: [  675.413265] Stack:  0000000000000206 
00007fff11ad0c00 0000000000000004 00007fff11ad0d80
Nov 21 10:15:46 XenServer kernel: [  675.413269]  0000000000000017 
ffffffff8020b4c0 00007fff11ad0c80 00007fff11ad0d00
Nov 21 10:15:46 XenServer kernel: [  675.413273]  0000000000000019 
0000000000000017 00007f0607eb6ce2 000000000000e033
Nov 21 10:15:46 XenServer kernel: [  675.413276] Call Trace:
Nov 21 10:15:46 XenServer kernel: [  675.413286]  [<ffffffff8020b4c0>] ? 
system_call+0x0/0x6d
Nov 21 10:15:46 XenServer kernel: [  675.413289] 
Nov 21 10:15:46 XenServer kernel: [  675.413290] 
Nov 21 10:15:46 XenServer kernel: [  675.413291] Code:  Bad RIP value.
Nov 21 10:15:46 XenServer kernel: [  675.413296] RIP  [<ffffbfff8020b528>]
Nov 21 10:15:46 XenServer kernel: [  675.413298]  RSP <ffff880180225f88>
Nov 21 10:15:46 XenServer kernel: [  675.413300] CR2: ffffbfff8020b528
Nov 21 10:15:46 XenServer kernel: [  675.413303] ---[ end trace 
ac21ab483dc22699 ]---
Nov 21 10:15:47 XenServer kernel: [  675.837764] Bad page state in process 
'md0_resync'
Nov 21 10:15:47 XenServer kernel: [  675.837766] page:ffff8800046af778 
flags:0x4000000000000000 mapping:0000000000000000 mapcount:-16384 count:0
Nov 21 10:15:47 XenServer kernel: [  675.837773] Trying to fix it up, but a 
reboot is needed
Nov 21 10:15:47 XenServer kernel: [  675.837774] Backtrace:
Nov 21 10:15:47 XenServer kernel: [  675.837778] Pid: 1385, comm: md0_resync 
Tainted: G    B D   2.6.26-2-xen-amd64 #1
Nov 21 10:15:47 XenServer kernel: [  675.837780] 
Nov 21 10:15:47 XenServer kernel: [  675.837780] Call Trace:
Nov 21 10:15:47 XenServer kernel: [  675.837793]  [<ffffffff802684d8>] 
bad_page+0x6b/0x95
Nov 21 10:15:47 XenServer kernel: [  675.837796]  [<ffffffff802693cf>] 
get_page_from_freelist+0x398/0x51c
Nov 21 10:15:47 XenServer kernel: [  675.837803]  [<ffffffff8026963e>] 
__alloc_pages_internal+0xd6/0x3b2
Nov 21 10:15:47 XenServer kernel: [  675.837808]  [<ffffffff802afa99>] 
bio_alloc_bioset+0x89/0xd9
Nov 21 10:15:47 XenServer kernel: [  675.837814]  [<ffffffffa010110b>] 
:raid10:r10buf_pool_alloc+0xb5/0x192
Nov 21 10:15:47 XenServer kernel: [  675.837820]  [<ffffffff80266b2b>] 
mempool_alloc+0x24/0xda
Nov 21 10:15:47 XenServer kernel: [  675.837823]  [<ffffffffa00fe599>] 
:raid10:raise_barrier+0x22/0x21a
Nov 21 10:15:47 XenServer kernel: [  675.837829]  [<ffffffffa01004ed>] 
:raid10:sync_request+0x54b/0x87b
Nov 21 10:15:47 XenServer kernel: [  675.837834]  [<ffffffff8030dde1>] 
__next_cpu+0x19/0x26
Nov 21 10:15:47 XenServer kernel: [  675.837842]  [<ffffffffa00021c4>] 
:md_mod:is_mddev_idle+0xa4/0xfc
Nov 21 10:15:47 XenServer kernel: [  675.837850]  [<ffffffffa0006a80>] 
:md_mod:md_do_sync+0x575/0x942
Nov 21 10:15:47 XenServer kernel: [  675.837863]  [<ffffffffa00057d2>] 
:md_mod:md_thread+0xd7/0xed
Nov 21 10:15:47 XenServer kernel: [  675.837871]  [<ffffffffa00056fb>] 
:md_mod:md_thread+0x0/0xed
Nov 21 10:15:47 XenServer kernel: [  675.837874]  [<ffffffff8023f593>] 
kthread+0x47/0x74
Nov 21 10:15:47 XenServer kernel: [  675.837878]  [<ffffffff802283a8>] 
schedule_tail+0x27/0x5c
Nov 21 10:15:47 XenServer kernel: [  675.837882]  [<ffffffff8020be28>] 
child_rip+0xa/0x12
Nov 21 10:15:47 XenServer kernel: [  675.837887]  [<ffffffff8023f54c>] 
kthread+0x0/0x74
Nov 21 10:15:47 XenServer kernel: [  675.837890]  [<ffffffff8020be1e>] 
child_rip+0x0/0x12
Nov 21 10:15:47 XenServer kernel: [  675.837892] 
Nov 21 10:15:47 XenServer kernel: [  675.838552] Bad page state in process 
'md0_resync'
Nov 21 10:15:47 XenServer kernel: [  675.838553] page:ffff8800046a6b78 
flags:0x4000000000000000 mapping:0000000000000000 mapcount:-16384 count:0
Nov 21 10:15:47 XenServer kernel: [  675.838558] Trying to fix it up, but a 
reboot is needed
Nov 21 10:15:47 XenServer kernel: [  675.838559] Backtrace:
Nov 21 10:15:47 XenServer kernel: [  675.838562] Pid: 1385, comm: md0_resync 
Tainted: G    B D   2.6.26-2-xen-amd64 #1
Nov 21 10:15:47 XenServer kernel: [  675.838564] 
Nov 21 10:15:47 XenServer kernel: [  675.838564] Call Trace:
Nov 21 10:15:47 XenServer kernel: [  675.838569]  [<ffffffff802684d8>] 
bad_page+0x6b/0x95
Nov 21 10:15:47 XenServer kernel: [  675.838572]  [<ffffffff802693cf>] 
get_page_from_freelist+0x398/0x51c
Nov 21 10:15:47 XenServer kernel: [  675.838578]  [<ffffffff8026963e>] 
__alloc_pages_internal+0xd6/0x3b2
Nov 21 10:15:47 XenServer kernel: [  675.838583]  [<ffffffff802afa99>] 
bio_alloc_bioset+0x89/0xd9
Nov 21 10:15:47 XenServer kernel: [  675.838588]  [<ffffffffa010110b>] 
:raid10:r10buf_pool_alloc+0xb5/0x192
Nov 21 10:15:47 XenServer kernel: [  675.838593]  [<ffffffff80266b2b>] 
mempool_alloc+0x24/0xda
Nov 21 10:15:47 XenServer kernel: [  675.838597]  [<ffffffffa00fe599>] 
:raid10:raise_barrier+0x22/0x21a
Nov 21 10:15:47 XenServer kernel: [  675.838603]  [<ffffffffa01004ed>] 
:raid10:sync_request+0x54b/0x87b
Nov 21 10:15:47 XenServer kernel: [  675.838607]  [<ffffffff8030dde1>] 
__next_cpu+0x19/0x26
Nov 21 10:15:47 XenServer kernel: [  675.838613]  [<ffffffffa00021c4>] 
:md_mod:is_mddev_idle+0xa4/0xfc
Nov 21 10:15:47 XenServer kernel: [  675.838621]  [<ffffffffa0006a80>] 
:md_mod:md_do_sync+0x575/0x942
Nov 21 10:15:47 XenServer kernel: [  675.838635]  [<ffffffffa00057d2>] 
:md_mod:md_thread+0xd7/0xed
Nov 21 10:15:47 XenServer kernel: [  675.838642]  [<ffffffffa00056fb>] 
:md_mod:md_thread+0x0/0xed
Nov 21 10:15:47 XenServer kernel: [  675.838645]  [<ffffffff8023f593>] 
kthread+0x47/0x74
Nov 21 10:15:47 XenServer kernel: [  675.838648]  [<ffffffff802283a8>] 
schedule_tail+0x27/0x5c
Nov 21 10:15:47 XenServer kernel: [  675.838651]  [<ffffffff8020be28>] 
child_rip+0xa/0x12
Nov 21 10:15:47 XenServer kernel: [  675.838657]  [<ffffffff8023f54c>] 
kthread+0x0/0x74
Nov 21 10:15:47 XenServer kernel: [  675.838659]  [<ffffffff8020be1e>] 
child_rip+0x0/0x12
Nov 21 10:15:47 XenServer kernel: [  675.838661] 



















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