[Xen-devel] [pciback] BUG: spinlock wrong CPU on CPU#2, xenwatch/40 lock: ffff88001dd9d310, .magic: dead4ead, .owner: xenwatch/40, .owner_cpu: 0

[Sander Eikelenboom <linux@xxxxxxxxxxxxxx>]

Hi Konrad,

I saw you have made a branch for upstream pciback in your tree ?
I have one request, would it be possible to allow a wildcard (*) for the 
function .. so xen-pciback.hide=(04:00.*) would work just as it does in the 
domU .cfg ?

Apart from that i sometimes get this when starting a domain with pci devices 
passed through:

Nov 10 09:48:04 localhost kernel: [  893.055513] BUG: spinlock wrong CPU on 
CPU#2, xenwatch/40
Nov 10 09:48:04 localhost kernel: [  893.056268]  lock: ffff88001dd9d310, 
.magic: dead4ead, .owner: xenwatch/40, .owner_cpu: 0

Xen-unstable: Thu Nov 04 16:42:34 2010 +0000 22364:0d5f09e3728c
Dom0 kernel:  2.6.32.25 pvops commit 6c72eadd151f6f1b904989532a83988af0ea661a
DomU kernel: 2.6.37-rc1 commit 151f52f09c5728ecfdd0c289da1a4b30bb416f2c

--
Sander


Nov 10 09:47:59 localhost kernel: [  888.310761]   alloc irq_desc for 1691 on 
node 0
Nov 10 09:47:59 localhost kernel: [  888.310766]   alloc kstat_irqs on node 0
Nov 10 09:47:59 localhost logger: /etc/xen/scripts/block: add 
XENBUS_PATH=backend/vbd/14/51713
Nov 10 09:47:59 localhost logger: /etc/xen/scripts/block: Writing 
backend/vbd/14/51713/node /dev/loop20 to xenstore.
Nov 10 09:47:59 localhost logger: /etc/xen/scripts/block: Writing 
backend/vbd/14/51713/physical-device 7:14 to xenstore.
Nov 10 09:47:59 localhost logger: /etc/xen/scripts/block: Writing 
backend/vbd/14/51713/hotplug-status connected to xenstore.
Nov 10 09:48:00 localhost logger: /etc/xen/scripts/block: add 
XENBUS_PATH=backend/vbd/14/51714
Nov 10 09:48:00 localhost logger: /etc/xen/scripts/block: Writing 
backend/vbd/14/51714/node /dev/loop21 to xenstore.
Nov 10 09:48:00 localhost logger: /etc/xen/scripts/block: Writing 
backend/vbd/14/51714/physical-device 7:15 to xenstore.
Nov 10 09:48:00 localhost logger: /etc/xen/scripts/block: Writing 
backend/vbd/14/51714/hotplug-status connected to xenstore.
Nov 10 09:48:00 localhost logger: /etc/xen/scripts/block: add 
XENBUS_PATH=backend/vbd/14/51729
Nov 10 09:48:00 localhost logger: /etc/xen/scripts/vif-bridge: online 
type_if=vif XENBUS_PATH=backend/vif/14/0
Nov 10 09:48:01 localhost kernel: [  889.998853] device vif14.0 entered 
promiscuous mode
Nov 10 09:48:01 localhost kernel: [  890.023895] xen_bridge: port 11(vif14.0) 
entering learning state
Nov 10 09:48:01 localhost logger: /etc/xen/scripts/vif-bridge: Successful 
vif-bridge online for vif14.0, bridge xen_bridge.
Nov 10 09:48:01 localhost logger: /etc/xen/scripts/vif-bridge: Writing 
backend/vif/14/0/hotplug-status connected to xenstore.
Nov 10 09:48:01 localhost logger: /etc/xen/scripts/vif-bridge: online 
XENBUS_PATH=backend/vif/14/0
Nov 10 09:48:01 localhost /USR/SBIN/CRON[15623]: (root) CMD ( /bin/bash 
/etc/eigen_scripts/zabbix-1.8/scripts/zabbix_collect_statistics.sh)
Nov 10 09:48:01 localhost kernel: [  890.335943] xen_bridge: port 11(vif14.0) 
entering disabled state
Nov 10 09:48:01 localhost kernel: [  890.365172] xen_bridge: port 11(vif14.0) 
entering learning state
Nov 10 09:48:01 localhost logger: /etc/xen/scripts/block: Writing 
backend/vbd/14/51729/physical-device fc:8 to xenstore.
Nov 10 09:48:01 localhost logger: /etc/xen/scripts/block: Writing 
backend/vbd/14/51729/hotplug-status connected to xenstore.
Nov 10 09:48:01 localhost logger: /etc/xen/scripts/vif-bridge: Successful 
vif-bridge online for vif14.0, bridge xen_bridge.
Nov 10 09:48:01 localhost logger: /etc/xen/scripts/vif-bridge: Writing 
backend/vif/14/0/hotplug-status connected to xenstore.
Nov 10 09:48:03 localhost /USR/SBIN/CRON[15620]: (root) MAIL (mailed 198 bytes 
of output but got status 0x0001#012)
Nov 10 09:48:03 localhost kernel: [  892.789037] pciback pci-14-0: allocated 
pdev @ 0xffff8800251c2600
Nov 10 09:48:03 localhost kernel: [  892.809265] pciback pci-14-0: getting be 
setup
Nov 10 09:48:03 localhost kernel: [  892.813947] pciback pci-14-0: exporting 
dom 0 bus 4 slot 0 func 0
Nov 10 09:48:03 localhost kernel: [  892.821631] pciback 0000:04:00.0: 
registering for 14
Nov 10 09:48:03 localhost kernel: [  892.835730] pciback pci-14-0: exporting 
dom 0 bus 4 slot 0 func 1
Nov 10 09:48:03 localhost kernel: [  892.839632] pciback 0000:04:00.1: 
registering for 14
Nov 10 09:48:03 localhost kernel: [  892.853634] pciback pci-14-0: exporting 
dom 0 bus 4 slot 0 func 2
Nov 10 09:48:03 localhost kernel: [  892.860462] pciback 0000:04:00.2: 
registering for 14
Nov 10 09:48:03 localhost kernel: [  892.883340] pciback pci-14-0: exporting 
dom 0 bus 4 slot 0 func 3
Nov 10 09:48:03 localhost kernel: [  892.893487] pciback 0000:04:00.3: 
registering for 14
Nov 10 09:48:03 localhost kernel: [  892.903580] pciback pci-14-0: exporting 
dom 0 bus 4 slot 0 func 4
Nov 10 09:48:03 localhost kernel: [  892.910463] pciback 0000:04:00.4: 
registering for 14
Nov 10 09:48:03 localhost kernel: [  892.926832] pciback pci-14-0: exporting 
dom 0 bus 4 slot 0 func 5
Nov 10 09:48:03 localhost kernel: [  892.937014] pciback 0000:04:00.5: 
registering for 14
Nov 10 09:48:03 localhost kernel: [  892.943421] pciback pci-14-0: exporting 
dom 0 bus 4 slot 0 func 6
Nov 10 09:48:03 localhost kernel: [  892.950156] pciback 0000:04:00.6: 
registering for 14
Nov 10 09:48:03 localhost kernel: [  892.967932] pciback pci-14-0: exporting 
dom 0 bus 4 slot 0 func 7
Nov 10 09:48:04 localhost kernel: [  892.974821] pciback 0000:04:00.7: 
registering for 14
Nov 10 09:48:04 localhost kernel: [  892.984644] pciback pci-14-0: Publishing 
pci roots
Nov 10 09:48:04 localhost kernel: [  892.988186] pciback pci-14-0: writing root 
0 at 0000:04
Nov 10 09:48:04 localhost kernel: [  893.002377] pciback pci-14-0: Publishing 
pci roots
Nov 10 09:48:04 localhost kernel: [  893.009333] pciback pci-14-0: Publishing 
pci roots
Nov 10 09:48:04 localhost kernel: [  893.013285] pciback pci-14-0: Publishing 
pci roots
Nov 10 09:48:04 localhost kernel: [  893.020255] pciback pci-14-0: Publishing 
pci roots
Nov 10 09:48:04 localhost kernel: [  893.031625] pciback pci-14-0: Publishing 
pci roots
Nov 10 09:48:04 localhost kernel: [  893.042788] pciback pci-14-0: Publishing 
pci roots
Nov 10 09:48:04 localhost kernel: [  893.047202] pciback pci-14-0: Publishing 
pci roots
Nov 10 09:48:04 localhost kernel: [  893.055513] BUG: spinlock wrong CPU on 
CPU#2, xenwatch/40
Nov 10 09:48:04 localhost kernel: [  893.056268]  lock: ffff88001dd9d310, 
.magic: dead4ead, .owner: xenwatch/40, .owner_cpu: 0
Nov 10 09:48:04 localhost kernel: [  893.056268] Pid: 40, comm: xenwatch Not 
tainted 2.6.32.25-xen-next-2.6.32.x-20101106 #8
Nov 10 09:48:04 localhost kernel: [  893.056268] Call Trace:
Nov 10 09:48:04 localhost kernel: [  893.056268]  [<ffffffff81332552>] 
spin_bug+0xa2/0xf0
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff81045e3f>] ? 
xen_restore_fl_direct_end+0x0/0x1
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff81332606>] 
_raw_spin_unlock+0x66/0xa0
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff8175799b>] 
_spin_unlock+0x2b/0x40
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff813b8663>] 
pciback_publish_pci_roots+0xc3/0xe0
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff813b5870>] ? 
pciback_publish_pci_root+0x0/0x220
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff813b5e4c>] 
pciback_be_watch+0x22c/0x2c0
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff813b0256>] ? 
show_current_kb+0x16/0x40
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff813b6663>] ? 
pciback_xenbus_probe+0x1c3/0x1f0
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff810c7406>] ? 
lock_release+0x126/0x260
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff813b666f>] 
pciback_xenbus_probe+0x1cf/0x1f0
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff813af163>] 
xenbus_dev_probe+0x93/0x190
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff81403e75>] 
driver_probe_device+0xb5/0x1d0
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff81404040>] ? 
__device_attach+0x0/0x60
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff81404093>] 
__device_attach+0x53/0x60
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff81403113>] 
bus_for_each_drv+0x73/0xa0
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff81404176>] 
device_attach+0x96/0xb0
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff81402ecd>] 
bus_probe_device+0x2d/0x50
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff814012ea>] 
device_add+0x3fa/0x630
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff8140153e>] 
device_register+0x1e/0x30
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff813aec50>] 
xenbus_probe_node+0x120/0x1a0
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff814034da>] ? 
bus_for_each_dev+0x8a/0xa0
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff813aee96>] 
xenbus_dev_changed+0x1c6/0x1d0
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff810c7406>] ? 
lock_release+0x126/0x260
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff813af45b>] 
backend_changed+0x1b/0x20
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff813ad345>] 
xenwatch_thread+0x55/0x160
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff810b0760>] ? 
autoremove_wake_function+0x0/0x40
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff813ad2f0>] ? 
xenwatch_thread+0x0/0x160
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff810b03c6>] 
kthread+0x96/0xb0
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff8104a6ca>] 
child_rip+0xa/0x20
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff8104a050>] ? 
restore_args+0x0/0x30
Nov 10 09:48:04 localhost kernel: [  893.148525]  [<ffffffff8104a6c0>] ? 
child_rip+0x0/0x20
Nov 10 09:48:04 localhost kernel: [  893.292564]   alloc irq_desc for 1690 on 
node 0
Nov 10 09:48:04 localhost kernel: [  893.292567]   alloc kstat_irqs on node 0
Nov 10 09:48:04 localhost kernel: [  893.294725] pciback pci-14-0: fe state 
changed 1
Nov 10 09:48:09 localhost kernel: [  898.579722] pciback pci-14-0: fe state 
changed 3
Nov 10 09:48:09 localhost kernel: [  898.589522] pciback pci-14-0: Reading 
frontend config
Nov 10 09:48:09 localhost kernel: [  898.589887] pciback pci-14-0: Attaching to 
frontend resources - gnt_ref=8 evtchn=8
Nov 10 09:48:09 localhost kernel: [  898.589960]   alloc irq_desc for 1689 on 
node 0
Nov 10 09:48:09 localhost kernel: [  898.589962]   alloc kstat_irqs on node 0
Nov 10 09:48:09 localhost kernel: [  898.590001] pciback pci-14-0: Attached!
Nov 10 09:48:09 localhost kernel: [  898.590002] pciback pci-14-0: Connecting...
Nov 10 09:48:09 localhost kernel: [  898.600591] pciback pci-14-0: Connected? 0
Nov 10 09:48:09 localhost kernel: [  898.625435] blkback: ring-ref 9, 
event-channel 9, protocol 1 (x86_64-abi)
Nov 10 09:48:09 localhost kernel: [  898.625514]   alloc irq_desc for 1688 on 
node 0
Nov 10 09:48:09 localhost kernel: [  898.625516]   alloc kstat_irqs on node 0
Nov 10 09:48:09 localhost kernel: [  898.852400] blkback: ring-ref 10, 
event-channel 10, protocol 1 (x86_64-abi)
Nov 10 09:48:09 localhost kernel: [  898.859514]   alloc irq_desc for 1687 on 
node 0
Nov 10 09:48:09 localhost kernel: [  898.866203]   alloc kstat_irqs on node 0
Nov 10 09:48:09 localhost kernel: [  898.922676] pciback 0000:04:00.1: set 
power state to 0
Nov 10 09:48:09 localhost kernel: [  898.929319] pciback 0000:04:00.1: enabling 
device (0000 -> 0002)
Nov 10 09:48:09 localhost kernel: [  898.935280] xen: registering gsi 40 
triggering 0 polarity 1
Nov 10 09:48:09 localhost kernel: [  898.935280] xen_allocate_pirq: returning 
irq 40 for gsi 40
Nov 10 09:48:09 localhost kernel: [  898.935280] xen: --> irq=40
Nov 10 09:48:09 localhost kernel: [  898.935484] Already setup the GSI :40
Nov 10 09:48:09 localhost kernel: [  898.935486] pciback 0000:04:00.1: PCI INT 
A -> GSI 40 (level, low) -> IRQ 40
Nov 10 09:48:09 localhost kernel: [  898.935493] pciback 0000:04:00.1: 
pciback[0000:04:00.1]: #40 on  disable-> enable
Nov 10 09:48:10 localhost kernel: [  898.935833] pciback 0000:04:00.1: 
pciback[0000:04:00.1]: #40 on  enabled
Nov 10 09:48:10 localhost kernel: [  898.936193] pciback 0000:04:00.1: enabling 
bus mastering
Nov 10 09:48:10 localhost kernel: [  898.936202] pciback 0000:04:00.1: setting 
latency timer to 64
Nov 10 09:48:10 localhost kernel: [  898.944952] blkback: ring-ref 11, 
event-channel 11, protocol 1 (x86_64-abi)
Nov 10 09:48:10 localhost kernel: [  898.945024]   alloc irq_desc for 1686 on 
node 0
Nov 10 09:48:10 localhost kernel: [  898.945026]   alloc kstat_irqs on node 0
Nov 10 09:48:10 localhost kernel: [  898.957507] pciback 0000:04:00.1: enabling 
Mem-Wr-Inval
Nov 10 09:48:10 localhost kernel: [  898.963912] pciback 0000:04:00.3: set 
power state to 0
Nov 10 09:48:10 localhost kernel: [  898.964214] pciback 0000:04:00.3: enabling 
device (0000 -> 0002)
Nov 10 09:48:10 localhost kernel: [  898.964222] xen: registering gsi 41 
triggering 0 polarity 1
Nov 10 09:48:10 localhost kernel: [  898.964224] xen_allocate_pirq: returning 
irq 41 for gsi 41
Nov 10 09:48:10 localhost kernel: [  898.964226] xen: --> irq=41
Nov 10 09:48:10 localhost kernel: [  898.964229] Already setup the GSI :41
Nov 10 09:48:10 localhost kernel: [  898.964231] pciback 0000:04:00.3: PCI INT 
B -> GSI 41 (level, low) -> IRQ 41
Nov 10 09:48:10 localhost kernel: [  898.964237] pciback 0000:04:00.3: 
pciback[0000:04:00.3]: #41 on  disable-> enable
Nov 10 09:48:10 localhost kernel: [  898.964275] pciback 0000:04:00.3: 
pciback[0000:04:00.3]: #41 on  enabled
Nov 10 09:48:10 localhost kernel: [  898.964502] pciback 0000:04:00.3: enabling 
bus mastering
Nov 10 09:48:10 localhost kernel: [  898.964510] pciback 0000:04:00.3: setting 
latency timer to 64
Nov 10 09:48:10 localhost kernel: [  898.985498] pciback 0000:04:00.3: enabling 
Mem-Wr-Inval
Nov 10 09:48:10 localhost kernel: [  898.991803] pciback 0000:04:00.5: set 
power state to 0
Nov 10 09:48:10 localhost kernel: [  898.991874] pciback 0000:04:00.5: enabling 
device (0000 -> 0002)
Nov 10 09:48:10 localhost kernel: [  898.991881] xen: registering gsi 42 
triggering 0 polarity 1
Nov 10 09:48:10 localhost kernel: [  898.991884] xen_allocate_pirq: returning 
irq 42 for gsi 42
Nov 10 09:48:10 localhost kernel: [  898.991885] xen: --> irq=42
Nov 10 09:48:10 localhost kernel: [  898.991888] Already setup the GSI :42
Nov 10 09:48:10 localhost kernel: [  898.991890] pciback 0000:04:00.5: PCI INT 
C -> GSI 42 (level, low) -> IRQ 42
Nov 10 09:48:10 localhost kernel: [  898.991897] pciback 0000:04:00.5: 
pciback[0000:04:00.5]: #42 on  disable-> enable
Nov 10 09:48:10 localhost kernel: [  898.991934] pciback 0000:04:00.5: 
pciback[0000:04:00.5]: #42 on  enabled
Nov 10 09:48:10 localhost kernel: [  898.991998] pciback 0000:04:00.5: enabling 
bus mastering
Nov 10 09:48:10 localhost kernel: [  898.992006] pciback 0000:04:00.5: setting 
latency timer to 64
Nov 10 09:48:10 localhost kernel: [  899.012475] pciback 0000:04:00.5: enabling 
Mem-Wr-Inval
Nov 10 09:48:10 localhost kernel: [  899.014577] pciback pci-14-0: fe state 
changed 4
Nov 10 09:48:10 localhost kernel: [  899.018849] pciback 0000:04:00.7: set 
power state to 0
Nov 10 09:48:10 localhost kernel: [  899.018908] pciback 0000:04:00.7: enabling 
device (0000 -> 0002)
Nov 10 09:48:10 localhost kernel: [  899.018915] xen: registering gsi 43 
triggering 0 polarity 1
Nov 10 09:48:10 localhost kernel: [  899.018917] xen_allocate_pirq: returning 
irq 43 for gsi 43
Nov 10 09:48:10 localhost kernel: [  899.018919] xen: --> irq=43
Nov 10 09:48:10 localhost kernel: [  899.018922] Already setup the GSI :43
Nov 10 09:48:10 localhost kernel: [  899.018924] pciback 0000:04:00.7: PCI INT 
D -> GSI 43 (level, low) -> IRQ 43
Nov 10 09:48:10 localhost kernel: [  899.018929] pciback 0000:04:00.7: 
pciback[0000:04:00.7]: #43 on  disable-> enable
Nov 10 09:48:10 localhost kernel: [  899.018966] pciback 0000:04:00.7: 
pciback[0000:04:00.7]: #43 on  enabled
Nov 10 09:48:10 localhost kernel: [  899.019028] pciback 0000:04:00.7: enabling 
bus mastering
Nov 10 09:48:10 localhost kernel: [  899.019036] pciback 0000:04:00.7: setting 
latency timer to 64
Nov 10 09:48:10 localhost kernel: [  899.039458] pciback 0000:04:00.7: enabling 
Mem-Wr-Inval
Nov 10 09:48:10 localhost kernel: [  899.095415] pciback 0000:04:00.0: set 
power state to 0
Nov 10 09:48:10 localhost kernel: [  899.095513] pciback 0000:04:00.0: enabling 
device (0000 -> 0002)
Nov 10 09:48:10 localhost kernel: [  899.095520] xen: registering gsi 40 
triggering 0 polarity 1
Nov 10 09:48:10 localhost kernel: [  899.095522] xen_allocate_pirq: returning 
irq 40 for gsi 40
Nov 10 09:48:10 localhost kernel: [  899.095524] xen: --> irq=40
Nov 10 09:48:10 localhost kernel: [  899.095527] Already setup the GSI :40
Nov 10 09:48:10 localhost kernel: [  899.095529] pciback 0000:04:00.0: PCI INT 
A -> GSI 40 (level, low) -> IRQ 40
Nov 10 09:48:10 localhost kernel: [  899.095535] pciback 0000:04:00.0: 
pciback[0000:04:00.0]: #40 on  disable-> enable
Nov 10 09:48:10 localhost kernel: [  899.095552] pciback 0000:04:00.0: 
pciback[0000:04:00.0]: #40 on  enabled
Nov 10 09:48:10 localhost kernel: [  899.095779] pciback 0000:04:00.0: enabling 
bus mastering
Nov 10 09:48:10 localhost kernel: [  899.095787] pciback 0000:04:00.0: setting 
latency timer to 64
Nov 10 09:48:10 localhost kernel: [  899.129122]   alloc irq_desc for 1685 on 
node 0
Nov 10 09:48:10 localhost kernel: [  899.129126]   alloc kstat_irqs on node 0
Nov 10 09:48:10 localhost kernel: [  899.150960] pciback 0000:04:00.2: set 
power state to 0
Nov 10 09:48:10 localhost kernel: [  899.151018] pciback 0000:04:00.2: enabling 
device (0000 -> 0002)
Nov 10 09:48:10 localhost kernel: [  899.151025] xen: registering gsi 41 
triggering 0 polarity 1
Nov 10 09:48:10 localhost kernel: [  899.151027] xen_allocate_pirq: returning 
irq 41 for gsi 41
Nov 10 09:48:10 localhost kernel: [  899.151029] xen: --> irq=41
Nov 10 09:48:10 localhost kernel: [  899.151031] Already setup the GSI :41
Nov 10 09:48:10 localhost kernel: [  899.151033] pciback 0000:04:00.2: PCI INT 
B -> GSI 41 (level, low) -> IRQ 41
Nov 10 09:48:10 localhost kernel: [  899.151039] pciback 0000:04:00.2: 
pciback[0000:04:00.2]: #41 on  disable-> enable
Nov 10 09:48:10 localhost kernel: [  899.151053] pciback 0000:04:00.2: 
pciback[0000:04:00.2]: #41 on  enabled
Nov 10 09:48:10 localhost kernel: [  899.151294] pciback 0000:04:00.2: enabling 
bus mastering
Nov 10 09:48:10 localhost kernel: [  899.151302] pciback 0000:04:00.2: setting 
latency timer to 64
Nov 10 09:48:10 localhost kernel: [  899.206902] pciback 0000:04:00.4: set 
power state to 0
Nov 10 09:48:10 localhost kernel: [  899.206958] pciback 0000:04:00.4: enabling 
device (0000 -> 0002)
Nov 10 09:48:10 localhost kernel: [  899.206964] xen: registering gsi 42 
triggering 0 polarity 1
Nov 10 09:48:10 localhost kernel: [  899.206966] xen_allocate_pirq: returning 
irq 42 for gsi 42
Nov 10 09:48:10 localhost kernel: [  899.206968] xen: --> irq=42
Nov 10 09:48:10 localhost kernel: [  899.206970] Already setup the GSI :42
Nov 10 09:48:10 localhost kernel: [  899.206972] pciback 0000:04:00.4: PCI INT 
C -> GSI 42 (level, low) -> IRQ 42
Nov 10 09:48:10 localhost kernel: [  899.206977] pciback 0000:04:00.4: 
pciback[0000:04:00.4]: #42 on  disable-> enable
Nov 10 09:48:10 localhost kernel: [  899.206989] pciback 0000:04:00.4: 
pciback[0000:04:00.4]: #42 on  enabled
Nov 10 09:48:10 localhost kernel: [  899.207258] pciback 0000:04:00.4: enabling 
bus mastering
Nov 10 09:48:10 localhost kernel: [  899.207266] pciback 0000:04:00.4: setting 
latency timer to 64
Nov 10 09:48:10 localhost kernel: [  899.262744] pciback 0000:04:00.6: set 
power state to 0
Nov 10 09:48:10 localhost kernel: [  899.262823] pciback 0000:04:00.6: enabling 
device (0000 -> 0002)
Nov 10 09:48:10 localhost kernel: [  899.262829] xen: registering gsi 43 
triggering 0 polarity 1
Nov 10 09:48:10 localhost kernel: [  899.262831] xen_allocate_pirq: returning 
irq 43 for gsi 43
Nov 10 09:48:10 localhost kernel: [  899.262832] xen: --> irq=43
Nov 10 09:48:10 localhost kernel: [  899.262835] Already setup the GSI :43
Nov 10 09:48:10 localhost kernel: [  899.262836] pciback 0000:04:00.6: PCI INT 
D -> GSI 43 (level, low) -> IRQ 43
Nov 10 09:48:10 localhost kernel: [  899.262842] pciback 0000:04:00.6: 
pciback[0000:04:00.6]: #43 on  disable-> enable
Nov 10 09:48:10 localhost kernel: [  899.262854] pciback 0000:04:00.6: 
pciback[0000:04:00.6]: #43 on  enabled
Nov 10 09:48:10 localhost kernel: [  899.262909] pciback 0000:04:00.6: enabling 
bus mastering
Nov 10 09:48:10 localhost kernel: [  899.262917] pciback 0000:04:00.6: setting 
latency timer to 64


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