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[Xen-devel] 2.6.31.5 scheduling while atomic bug

from [Austin Schuh] [Permanent Link][Original]
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] 2.6.31.5 scheduling while atomic bug
From: Austin Schuh <austin.xen@xxxxxxxxxxxxxxx>
Date: Mon, 02 Nov 2009 00:18:24 -0800
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Hardware configuration.

  Xeon E5520
  Supermicro x8dai
  6 GB DDR3 EEC Registered ram
  03:00.0 Ethernet controller: Intel Corporation 82573E Gigabit Ethernet
Controller (Copper) (rev 03)
  04:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet
Controller
  06:00.0 VGA compatible controller: nVidia Corporation NV41.1 [GeForce
6800] (rev a2)

root[4996] iron ~
# uname -a
Linux iron 2.6.31.5 #18 SMP PREEMPT Sun Nov 1 20:46:32 PST 2009 x86_64
GNU/Linux

root[4997] iron /home/austin/local/xen/linux-2.6-xen
# git remote show origin
* remote origin
  URL: git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git
  Remote branch merged with 'git pull' while on branch xen/master
    xen/master

I'm running Windows 7 in a hvm with iommu=1.  When I boot it up without
any PCI devices attached, it outputs the four /etc/xen/scripts/block
lines in the attached part of the syslog.

root[4994] iron ~
# xm shell
The Xen Master. Type "help" for a list of functions.
xm> pci-attach w7 04:00.0
xm>

After attaching 04:00.0, the errors show up in the syslog.  The virtual
machine is still able to use the Ethernet card correctly, and appears to
be running just fine.

Attached is the portion of the syslog starting right before I boot the
virtual machine, and ending after adding the network card and once the
machine has settled down.

I don't know if this is the same problem, or a different one, but when I
try to attach the graphics card after attaching the network card to the
machine, I get a timeout.  The same happens if I attach the graphics
card first, and then attach the network card.

root[4995] iron ~
# xm shell
The Xen Master. Type "help" for a list of functions.
xm> pci-attach w7 06:00.0 1
Error: Timed out waiting for device model action
Usage: xm pci-attach [-o|--options=<opt>] <Domain>
<domain:bus:slot.func> [virtual slot]

Insert a new pass-through pci device.
xm>

Any idea what's going on?  I'll gladly try things and/or provide more
information if that could possibly help.

Thanks
    Austin Schuh
(sorry if this is a repeat. Sent from a not subscribed address earlier and it doesn't seem it went out. But you never know.) 
Nov  1 21:39:00 iron logger: /etc/xen/scripts/block: add 
XENBUS_PATH=backend/vbd/12/768
Nov  1 21:39:00 iron logger: /etc/xen/scripts/block: Writing 
backend/vbd/12/768/node /dev/loop0 to xenstore.
Nov  1 21:39:00 iron logger: /etc/xen/scripts/block: Writing 
backend/vbd/12/768/physical-device 7:0 to xenstore.
Nov  1 21:39:00 iron logger: /etc/xen/scripts/block: Writing 
backend/vbd/12/768/hotplug-status connected to xenstore.
Nov  1 21:39:56 iron kernel: BUG: scheduling while atomic: 
xenwatch/46/0x00000002
Nov  1 21:39:56 iron kernel: Modules linked in: bridge stp llc ipv6 w83627hf 
hwmon_vid sbp2 serio_raw pcspkr rtc_cmos button sg ohci1394 ieee1394 fan [last 
unloaded: scsi_wait_scan]
Nov  1 21:39:56 iron kernel: Pid: 46, comm: xenwatch Not tainted 2.6.31.5 #18
Nov  1 21:39:56 iron kernel: Call Trace:
Nov  1 21:39:56 iron kernel: [<ffffffff81049eba>] ? __schedule_bug+0x4a/0x70
Nov  1 21:39:56 iron kernel: [<ffffffff814e7d90>] ? thread_return+0x112/0x672
Nov  1 21:39:56 iron kernel: [<ffffffff8100940a>] ? hypercall_page+0x40a/0x1010
Nov  1 21:39:56 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:56 iron kernel: [<ffffffff812c063d>] ? read_reply+0xad/0x150
Nov  1 21:39:56 iron kernel: [<ffffffff8106a470>] ? 
autoremove_wake_function+0x0/0x30
Nov  1 21:39:56 iron kernel: [<ffffffff812c080d>] ? xs_talkv+0xed/0x1e0
Nov  1 21:39:56 iron kernel: [<ffffffff812c0a46>] ? xs_single+0x46/0x60
Nov  1 21:39:56 iron kernel: [<ffffffff812c12fa>] ? xenbus_read+0x4a/0x80
Nov  1 21:39:56 iron kernel: [<ffffffff812c13e1>] ? xenbus_gather+0xb1/0x180
Nov  1 21:39:56 iron kernel: [<ffffffff8100c442>] ? xen_write_cr0+0xb2/0x100
Nov  1 21:39:56 iron kernel: [<ffffffff810132d9>] ? __switch_to+0x129/0x3b0
Nov  1 21:39:56 iron kernel: [<ffffffff81010819>] ? xen_sched_clock+0xa9/0xc0
Nov  1 21:39:56 iron kernel: [<ffffffff814ea5f1>] ? _spin_unlock_irq+0x21/0x50
Nov  1 21:39:56 iron kernel: [<ffffffff81049913>] ? 
finish_task_switch+0xc3/0x100
Nov  1 21:39:56 iron kernel: [<ffffffff812bf066>] ? 
xenbus_read_driver_state+0x26/0x40
Nov  1 21:39:56 iron kernel: [<ffffffff814e9f3e>] ? _spin_lock+0xe/0x30
Nov  1 21:39:56 iron kernel: [<ffffffff812cdbea>] ? pciback_be_watch+0xaa/0x310
Nov  1 21:39:56 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:56 iron kernel: [<ffffffff814e854f>] ? preempt_schedule+0x4f/0x70
Nov  1 21:39:56 iron kernel: [<ffffffff812c0dd5>] ? 
register_xenbus_watch+0xe5/0x100
Nov  1 21:39:56 iron kernel: [<ffffffff812ce3f1>] ? 
pciback_xenbus_probe+0x111/0x120
Nov  1 21:39:56 iron kernel: [<ffffffff812c21f9>] ? xenbus_dev_probe+0x79/0x150
Nov  1 21:39:56 iron kernel: [<ffffffff81303028>] ? 
driver_probe_device+0x98/0x1b0
Nov  1 21:39:56 iron kernel: [<ffffffff813031e0>] ? __device_attach+0x0/0x60
Nov  1 21:39:56 iron kernel: [<ffffffff813024cb>] ? bus_for_each_drv+0x5b/0x80
Nov  1 21:39:56 iron kernel: [<ffffffff81303305>] ? device_attach+0x85/0x90
Nov  1 21:39:56 iron kernel: [<ffffffff813022c5>] ? bus_probe_device+0x25/0x40
Nov  1 21:39:56 iron kernel: [<ffffffff81300943>] ? device_add+0x3b3/0x5c0
Nov  1 21:39:56 iron kernel: [<ffffffff8123a7a4>] ? kobject_init+0x34/0xb0
Nov  1 21:39:56 iron kernel: [<ffffffff812c1d2f>] ? 
xenbus_probe_node+0x11f/0x1a0
Nov  1 21:39:56 iron kernel: [<ffffffff81302800>] ? bus_for_each_dev+0x40/0x80
Nov  1 21:39:56 iron kernel: [<ffffffff812c0420>] ? xenwatch_thread+0x0/0x170
Nov  1 21:39:56 iron kernel: [<ffffffff812c1f6a>] ? 
xenbus_dev_changed+0x1ba/0x1d0
Nov  1 21:39:56 iron kernel: [<ffffffff812c0420>] ? xenwatch_thread+0x0/0x170
Nov  1 21:39:56 iron kernel: [<ffffffff812c04ab>] ? xenwatch_thread+0x8b/0x170
Nov  1 21:39:56 iron kernel: [<ffffffff8106a470>] ? 
autoremove_wake_function+0x0/0x30
Nov  1 21:39:56 iron kernel: [<ffffffff8106a0b6>] ? kthread+0xa6/0xc0
Nov  1 21:39:56 iron kernel: [<ffffffff8101617a>] ? child_rip+0xa/0x20
Nov  1 21:39:56 iron kernel: [<ffffffff81015327>] ? 
int_ret_from_sys_call+0x7/0x1b
Nov  1 21:39:56 iron kernel: [<ffffffff81015ae1>] ? retint_restore_args+0x5/0x6
Nov  1 21:39:56 iron kernel: [<ffffffff81016170>] ? child_rip+0x0/0x20
Nov  1 21:39:57 iron kernel: BUG: scheduling while atomic: 
xenwatch/46/0x00000002
Nov  1 21:39:57 iron kernel: Modules linked in: bridge stp llc ipv6 w83627hf 
hwmon_vid sbp2 serio_raw pcspkr rtc_cmos button sg ohci1394 ieee1394 fan [last 
unloaded: scsi_wait_scan]
Nov  1 21:39:57 iron kernel: Pid: 46, comm: xenwatch Not tainted 2.6.31.5 #18
Nov  1 21:39:57 iron kernel: Call Trace:
Nov  1 21:39:57 iron kernel: [<ffffffff81049eba>] ? __schedule_bug+0x4a/0x70
Nov  1 21:39:57 iron kernel: [<ffffffff814e7d90>] ? thread_return+0x112/0x672
Nov  1 21:39:57 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:57 iron kernel: [<ffffffff812c063d>] ? read_reply+0xad/0x150
Nov  1 21:39:57 iron kernel: [<ffffffff8106a470>] ? 
autoremove_wake_function+0x0/0x30
Nov  1 21:39:57 iron kernel: [<ffffffff812c080d>] ? xs_talkv+0xed/0x1e0
Nov  1 21:39:57 iron kernel: [<ffffffff812c0a46>] ? xs_single+0x46/0x60
Nov  1 21:39:57 iron kernel: [<ffffffff812c12fa>] ? xenbus_read+0x4a/0x80
Nov  1 21:39:57 iron kernel: [<ffffffff812c14e3>] ? xenbus_scanf+0x33/0xc0
Nov  1 21:39:57 iron kernel: [<ffffffff810132d9>] ? __switch_to+0x129/0x3b0
Nov  1 21:39:57 iron kernel: [<ffffffff814ea5f1>] ? _spin_unlock_irq+0x21/0x50
Nov  1 21:39:57 iron kernel: [<ffffffff81049913>] ? 
finish_task_switch+0xc3/0x100
Nov  1 21:39:57 iron kernel: [<ffffffff812bf066>] ? 
xenbus_read_driver_state+0x26/0x40
Nov  1 21:39:57 iron kernel: [<ffffffff812cdc2f>] ? pciback_be_watch+0xef/0x310
Nov  1 21:39:57 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:57 iron kernel: [<ffffffff814e854f>] ? preempt_schedule+0x4f/0x70
Nov  1 21:39:57 iron kernel: [<ffffffff812c0dd5>] ? 
register_xenbus_watch+0xe5/0x100
Nov  1 21:39:57 iron kernel: [<ffffffff812ce3f1>] ? 
pciback_xenbus_probe+0x111/0x120
Nov  1 21:39:57 iron kernel: [<ffffffff812c21f9>] ? xenbus_dev_probe+0x79/0x150
Nov  1 21:39:57 iron kernel: [<ffffffff81303028>] ? 
driver_probe_device+0x98/0x1b0
Nov  1 21:39:57 iron kernel: [<ffffffff813031e0>] ? __device_attach+0x0/0x60
Nov  1 21:39:57 iron kernel: [<ffffffff813024cb>] ? bus_for_each_drv+0x5b/0x80
Nov  1 21:39:57 iron kernel: [<ffffffff81303305>] ? device_attach+0x85/0x90
Nov  1 21:39:57 iron kernel: [<ffffffff813022c5>] ? bus_probe_device+0x25/0x40
Nov  1 21:39:57 iron kernel: [<ffffffff81300943>] ? device_add+0x3b3/0x5c0
Nov  1 21:39:57 iron kernel: [<ffffffff8123a7a4>] ? kobject_init+0x34/0xb0
Nov  1 21:39:57 iron kernel: [<ffffffff812c1d2f>] ? 
xenbus_probe_node+0x11f/0x1a0
Nov  1 21:39:57 iron kernel: [<ffffffff81302800>] ? bus_for_each_dev+0x40/0x80
Nov  1 21:39:57 iron kernel: [<ffffffff812c0420>] ? xenwatch_thread+0x0/0x170
Nov  1 21:39:57 iron kernel: [<ffffffff812c1f6a>] ? 
xenbus_dev_changed+0x1ba/0x1d0
Nov  1 21:39:57 iron kernel: [<ffffffff812c0420>] ? xenwatch_thread+0x0/0x170
Nov  1 21:39:57 iron kernel: [<ffffffff812c04ab>] ? xenwatch_thread+0x8b/0x170
Nov  1 21:39:57 iron kernel: [<ffffffff8106a470>] ? 
autoremove_wake_function+0x0/0x30
Nov  1 21:39:57 iron kernel: [<ffffffff8106a0b6>] ? kthread+0xa6/0xc0
Nov  1 21:39:57 iron kernel: [<ffffffff8101617a>] ? child_rip+0xa/0x20
Nov  1 21:39:57 iron kernel: [<ffffffff81015327>] ? 
int_ret_from_sys_call+0x7/0x1b
Nov  1 21:39:57 iron kernel: [<ffffffff81015ae1>] ? retint_restore_args+0x5/0x6
Nov  1 21:39:57 iron kernel: [<ffffffff81016170>] ? child_rip+0x0/0x20
Nov  1 21:39:57 iron kernel: BUG: scheduling while atomic: 
xenwatch/46/0x00000002
Nov  1 21:39:57 iron kernel: Modules linked in: bridge stp llc ipv6 w83627hf 
hwmon_vid sbp2 serio_raw pcspkr rtc_cmos button sg ohci1394 ieee1394 fan [last 
unloaded: scsi_wait_scan]
Nov  1 21:39:57 iron kernel: Pid: 46, comm: xenwatch Not tainted 2.6.31.5 #18
Nov  1 21:39:57 iron kernel: Call Trace:
Nov  1 21:39:57 iron kernel: [<ffffffff81049eba>] ? __schedule_bug+0x4a/0x70
Nov  1 21:39:57 iron kernel: [<ffffffff814e7d90>] ? thread_return+0x112/0x672
Nov  1 21:39:57 iron kernel: [<ffffffff8100940a>] ? hypercall_page+0x40a/0x1010
Nov  1 21:39:57 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:57 iron kernel: [<ffffffff812c063d>] ? read_reply+0xad/0x150
Nov  1 21:39:57 iron kernel: [<ffffffff8106a470>] ? 
autoremove_wake_function+0x0/0x30
Nov  1 21:39:57 iron kernel: [<ffffffff812c080d>] ? xs_talkv+0xed/0x1e0
Nov  1 21:39:57 iron kernel: [<ffffffff812c0a46>] ? xs_single+0x46/0x60
Nov  1 21:39:57 iron kernel: [<ffffffff812c12fa>] ? xenbus_read+0x4a/0x80
Nov  1 21:39:57 iron kernel: [<ffffffff812c14e3>] ? xenbus_scanf+0x33/0xc0
Nov  1 21:39:57 iron kernel: [<ffffffff812415c4>] ? snprintf+0x44/0x50
Nov  1 21:39:57 iron kernel: [<ffffffff810132d9>] ? __switch_to+0x129/0x3b0
Nov  1 21:39:57 iron kernel: [<ffffffff814ea5f1>] ? _spin_unlock_irq+0x21/0x50
Nov  1 21:39:57 iron kernel: [<ffffffff81049913>] ? 
finish_task_switch+0xc3/0x100
Nov  1 21:39:57 iron kernel: [<ffffffff812bf066>] ? 
xenbus_read_driver_state+0x26/0x40
Nov  1 21:39:57 iron kernel: [<ffffffff812cdd7b>] ? pciback_be_watch+0x23b/0x310
Nov  1 21:39:57 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:57 iron kernel: [<ffffffff814e854f>] ? preempt_schedule+0x4f/0x70
Nov  1 21:39:57 iron kernel: [<ffffffff812c0dd5>] ? 
register_xenbus_watch+0xe5/0x100
Nov  1 21:39:57 iron kernel: [<ffffffff812ce3f1>] ? 
pciback_xenbus_probe+0x111/0x120
Nov  1 21:39:57 iron kernel: [<ffffffff812c21f9>] ? xenbus_dev_probe+0x79/0x150
Nov  1 21:39:57 iron kernel: [<ffffffff81303028>] ? 
driver_probe_device+0x98/0x1b0
Nov  1 21:39:57 iron kernel: [<ffffffff813031e0>] ? __device_attach+0x0/0x60
Nov  1 21:39:57 iron kernel: [<ffffffff813024cb>] ? bus_for_each_drv+0x5b/0x80
Nov  1 21:39:57 iron kernel: [<ffffffff81303305>] ? device_attach+0x85/0x90
Nov  1 21:39:57 iron kernel: [<ffffffff813022c5>] ? bus_probe_device+0x25/0x40
Nov  1 21:39:57 iron kernel: [<ffffffff81300943>] ? device_add+0x3b3/0x5c0
Nov  1 21:39:57 iron kernel: [<ffffffff8123a7a4>] ? kobject_init+0x34/0xb0
Nov  1 21:39:57 iron kernel: [<ffffffff812c1d2f>] ? 
xenbus_probe_node+0x11f/0x1a0
Nov  1 21:39:57 iron kernel: [<ffffffff81302800>] ? bus_for_each_dev+0x40/0x80
Nov  1 21:39:57 iron kernel: [<ffffffff812c0420>] ? xenwatch_thread+0x0/0x170
Nov  1 21:39:57 iron kernel: [<ffffffff812c1f6a>] ? 
xenbus_dev_changed+0x1ba/0x1d0
Nov  1 21:39:57 iron kernel: [<ffffffff812c0420>] ? xenwatch_thread+0x0/0x170
Nov  1 21:39:57 iron kernel: [<ffffffff812c04ab>] ? xenwatch_thread+0x8b/0x170
Nov  1 21:39:57 iron kernel: [<ffffffff8106a470>] ? 
autoremove_wake_function+0x0/0x30
Nov  1 21:39:57 iron kernel: [<ffffffff8106a0b6>] ? kthread+0xa6/0xc0
Nov  1 21:39:57 iron kernel: [<ffffffff8101617a>] ? child_rip+0xa/0x20
Nov  1 21:39:57 iron kernel: [<ffffffff81015327>] ? 
int_ret_from_sys_call+0x7/0x1b
Nov  1 21:39:57 iron kernel: [<ffffffff81015ae1>] ? retint_restore_args+0x5/0x6
Nov  1 21:39:57 iron kernel: [<ffffffff81016170>] ? child_rip+0x0/0x20
Nov  1 21:39:57 iron kernel: pciback pci-12-0: 22 Couldn't locate PCI device 
(0000:04:00.0)! perhaps already in-use?
Nov  1 21:39:57 iron kernel: BUG: scheduling while atomic: 
xenwatch/46/0x00000002
Nov  1 21:39:58 iron kernel: Modules linked in: bridge stp llc ipv6 w83627hf 
hwmon_vid sbp2 serio_raw pcspkr rtc_cmos button sg ohci1394 ieee1394 fan [last 
unloaded: scsi_wait_scan]
Nov  1 21:39:58 iron kernel: Pid: 46, comm: xenwatch Not tainted 2.6.31.5 #18
Nov  1 21:39:58 iron kernel: Call Trace:
Nov  1 21:39:58 iron kernel: [<ffffffff81049eba>] ? __schedule_bug+0x4a/0x70
Nov  1 21:39:58 iron kernel: [<ffffffff814e7d90>] ? thread_return+0x112/0x672
Nov  1 21:39:58 iron kernel: [<ffffffff8100940a>] ? hypercall_page+0x40a/0x1010
Nov  1 21:39:58 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:58 iron kernel: [<ffffffff812c063d>] ? read_reply+0xad/0x150
Nov  1 21:39:58 iron kernel: [<ffffffff8106a470>] ? 
autoremove_wake_function+0x0/0x30
Nov  1 21:39:58 iron kernel: [<ffffffff812c080d>] ? xs_talkv+0xed/0x1e0
Nov  1 21:39:58 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:58 iron kernel: [<ffffffff812c11b6>] ? xenbus_write+0x96/0xd0
Nov  1 21:39:58 iron kernel: [<ffffffff812bf153>] ? 
xenbus_va_dev_error+0xd3/0x130
Nov  1 21:39:58 iron kernel: [<ffffffff812bf458>] ? xenbus_dev_fatal+0x48/0x60
Nov  1 21:39:58 iron kernel: [<ffffffff8100fed9>] ? 
xen_force_evtchn_callback+0x9/0x10
Nov  1 21:39:58 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:58 iron kernel: [<ffffffff8101089f>] ? 
xen_restore_fl_direct_end+0x0/0x1
Nov  1 21:39:58 iron kernel: [<ffffffff814ea40c>] ? 
_spin_unlock_irqrestore+0x2c/0x70
Nov  1 21:39:58 iron kernel: [<ffffffff812cc799>] ? 
pcistub_get_pci_dev_by_slot+0xb9/0xd0
Nov  1 21:39:58 iron kernel: [<ffffffff812cdb16>] ? 
pciback_export_device+0x96/0xc0
Nov  1 21:39:58 iron kernel: [<ffffffff812cdcb9>] ? pciback_be_watch+0x179/0x310
Nov  1 21:39:58 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:58 iron kernel: [<ffffffff814e854f>] ? preempt_schedule+0x4f/0x70
Nov  1 21:39:58 iron kernel: [<ffffffff812c0dd5>] ? 
register_xenbus_watch+0xe5/0x100
Nov  1 21:39:58 iron kernel: [<ffffffff812ce3f1>] ? 
pciback_xenbus_probe+0x111/0x120
Nov  1 21:39:58 iron kernel: [<ffffffff812c21f9>] ? xenbus_dev_probe+0x79/0x150
Nov  1 21:39:58 iron kernel: [<ffffffff81303028>] ? 
driver_probe_device+0x98/0x1b0
Nov  1 21:39:58 iron kernel: [<ffffffff813031e0>] ? __device_attach+0x0/0x60
Nov  1 21:39:58 iron kernel: [<ffffffff813024cb>] ? bus_for_each_drv+0x5b/0x80
Nov  1 21:39:58 iron kernel: [<ffffffff81303305>] ? device_attach+0x85/0x90
Nov  1 21:39:58 iron kernel: [<ffffffff813022c5>] ? bus_probe_device+0x25/0x40
Nov  1 21:39:58 iron kernel: [<ffffffff81300943>] ? device_add+0x3b3/0x5c0
Nov  1 21:39:58 iron kernel: [<ffffffff8123a7a4>] ? kobject_init+0x34/0xb0
Nov  1 21:39:58 iron kernel: [<ffffffff812c1d2f>] ? 
xenbus_probe_node+0x11f/0x1a0
Nov  1 21:39:58 iron kernel: [<ffffffff81302800>] ? bus_for_each_dev+0x40/0x80
Nov  1 21:39:58 iron kernel: [<ffffffff812c0420>] ? xenwatch_thread+0x0/0x170
Nov  1 21:39:58 iron kernel: [<ffffffff812c1f6a>] ? 
xenbus_dev_changed+0x1ba/0x1d0
Nov  1 21:39:58 iron kernel: [<ffffffff812c0420>] ? xenwatch_thread+0x0/0x170
Nov  1 21:39:58 iron kernel: [<ffffffff812c04ab>] ? xenwatch_thread+0x8b/0x170
Nov  1 21:39:58 iron kernel: [<ffffffff8106a470>] ? 
autoremove_wake_function+0x0/0x30
Nov  1 21:39:58 iron kernel: [<ffffffff8106a0b6>] ? kthread+0xa6/0xc0
Nov  1 21:39:58 iron kernel: [<ffffffff8101617a>] ? child_rip+0xa/0x20
Nov  1 21:39:58 iron kernel: [<ffffffff81015327>] ? 
int_ret_from_sys_call+0x7/0x1b
Nov  1 21:39:58 iron kernel: [<ffffffff81015ae1>] ? retint_restore_args+0x5/0x6
Nov  1 21:39:58 iron kernel: [<ffffffff81016170>] ? child_rip+0x0/0x20
Nov  1 21:39:58 iron kernel: BUG: scheduling while atomic: 
xenwatch/46/0x00000002
Nov  1 21:39:58 iron kernel: Modules linked in: bridge stp llc ipv6 w83627hf 
hwmon_vid sbp2 serio_raw pcspkr rtc_cmos button sg ohci1394 ieee1394 fan [last 
unloaded: scsi_wait_scan]
Nov  1 21:39:58 iron kernel: Pid: 46, comm: xenwatch Not tainted 2.6.31.5 #18
Nov  1 21:39:58 iron kernel: Call Trace:
Nov  1 21:39:58 iron kernel: [<ffffffff81049eba>] ? __schedule_bug+0x4a/0x70
Nov  1 21:39:58 iron kernel: [<ffffffff814e7d90>] ? thread_return+0x112/0x672
Nov  1 21:39:58 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:58 iron kernel: [<ffffffff812c063d>] ? read_reply+0xad/0x150
Nov  1 21:39:58 iron kernel: [<ffffffff8106a470>] ? 
autoremove_wake_function+0x0/0x30
Nov  1 21:39:58 iron kernel: [<ffffffff812c080d>] ? xs_talkv+0xed/0x1e0
Nov  1 21:39:58 iron kernel: [<ffffffff812c0a46>] ? xs_single+0x46/0x60
Nov  1 21:39:58 iron kernel: [<ffffffff812c12fa>] ? xenbus_read+0x4a/0x80
Nov  1 21:39:58 iron kernel: [<ffffffff812c14e3>] ? xenbus_scanf+0x33/0xc0
Nov  1 21:39:58 iron kernel: [<ffffffff8100fed9>] ? 
xen_force_evtchn_callback+0x9/0x10
Nov  1 21:39:58 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:58 iron kernel: [<ffffffff8100fed9>] ? 
xen_force_evtchn_callback+0x9/0x10
Nov  1 21:39:58 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:58 iron kernel: [<ffffffff8101089f>] ? 
xen_restore_fl_direct_end+0x0/0x1
Nov  1 21:39:58 iron kernel: [<ffffffff810ca946>] ? kfree+0xf6/0x1c0
Nov  1 21:39:58 iron kernel: [<ffffffff812bf3a1>] ? 
xenbus_switch_state+0x41/0xb0
Nov  1 21:39:58 iron kernel: [<ffffffff812bf465>] ? xenbus_dev_fatal+0x55/0x60
Nov  1 21:39:58 iron kernel: [<ffffffff8100fed9>] ? 
xen_force_evtchn_callback+0x9/0x10
Nov  1 21:39:58 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:58 iron kernel: [<ffffffff8101089f>] ? 
xen_restore_fl_direct_end+0x0/0x1
Nov  1 21:39:58 iron kernel: [<ffffffff814ea40c>] ? 
_spin_unlock_irqrestore+0x2c/0x70
Nov  1 21:39:58 iron kernel: [<ffffffff812cc799>] ? 
pcistub_get_pci_dev_by_slot+0xb9/0xd0
Nov  1 21:39:58 iron kernel: [<ffffffff812cdb16>] ? 
pciback_export_device+0x96/0xc0
Nov  1 21:39:58 iron kernel: [<ffffffff812cdcb9>] ? pciback_be_watch+0x179/0x310
Nov  1 21:39:58 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:58 iron kernel: [<ffffffff814e854f>] ? preempt_schedule+0x4f/0x70
Nov  1 21:39:58 iron kernel: [<ffffffff812c0dd5>] ? 
register_xenbus_watch+0xe5/0x100
Nov  1 21:39:58 iron kernel: [<ffffffff812ce3f1>] ? 
pciback_xenbus_probe+0x111/0x120
Nov  1 21:39:58 iron kernel: [<ffffffff812c21f9>] ? xenbus_dev_probe+0x79/0x150
Nov  1 21:39:58 iron kernel: [<ffffffff81303028>] ? 
driver_probe_device+0x98/0x1b0
Nov  1 21:39:58 iron kernel: [<ffffffff813031e0>] ? __device_attach+0x0/0x60
Nov  1 21:39:58 iron kernel: [<ffffffff813024cb>] ? bus_for_each_drv+0x5b/0x80
Nov  1 21:39:58 iron kernel: [<ffffffff81303305>] ? device_attach+0x85/0x90
Nov  1 21:39:58 iron kernel: [<ffffffff813022c5>] ? bus_probe_device+0x25/0x40
Nov  1 21:39:58 iron kernel: [<ffffffff81300943>] ? device_add+0x3b3/0x5c0
Nov  1 21:39:58 iron kernel: [<ffffffff8123a7a4>] ? kobject_init+0x34/0xb0
Nov  1 21:39:58 iron kernel: [<ffffffff812c1d2f>] ? 
xenbus_probe_node+0x11f/0x1a0
Nov  1 21:39:58 iron kernel: [<ffffffff81302800>] ? bus_for_each_dev+0x40/0x80
Nov  1 21:39:58 iron kernel: [<ffffffff812c0420>] ? xenwatch_thread+0x0/0x170
Nov  1 21:39:58 iron kernel: [<ffffffff812c1f6a>] ? 
xenbus_dev_changed+0x1ba/0x1d0
Nov  1 21:39:58 iron kernel: [<ffffffff812c0420>] ? xenwatch_thread+0x0/0x170
Nov  1 21:39:58 iron kernel: [<ffffffff812c04ab>] ? xenwatch_thread+0x8b/0x170
Nov  1 21:39:58 iron kernel: [<ffffffff8106a470>] ? 
autoremove_wake_function+0x0/0x30
Nov  1 21:39:58 iron kernel: [<ffffffff8106a0b6>] ? kthread+0xa6/0xc0
Nov  1 21:39:58 iron kernel: [<ffffffff8101617a>] ? child_rip+0xa/0x20
Nov  1 21:39:58 iron kernel: [<ffffffff81015327>] ? 
int_ret_from_sys_call+0x7/0x1b
Nov  1 21:39:58 iron kernel: [<ffffffff81015ae1>] ? retint_restore_args+0x5/0x6
Nov  1 21:39:58 iron kernel: [<ffffffff81016170>] ? child_rip+0x0/0x20
Nov  1 21:39:58 iron kernel: BUG: scheduling while atomic: 
xenwatch/46/0x00000002
Nov  1 21:39:59 iron kernel: Modules linked in: bridge stp llc ipv6 w83627hf 
hwmon_vid sbp2 serio_raw pcspkr rtc_cmos button sg ohci1394 ieee1394 fan [last 
unloaded: scsi_wait_scan]
Nov  1 21:39:59 iron kernel: Pid: 46, comm: xenwatch Not tainted 2.6.31.5 #18
Nov  1 21:39:59 iron kernel: Call Trace:
Nov  1 21:39:59 iron kernel: [<ffffffff81049eba>] ? __schedule_bug+0x4a/0x70
Nov  1 21:39:59 iron kernel: [<ffffffff814e7d90>] ? thread_return+0x112/0x672
Nov  1 21:39:59 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:59 iron kernel: [<ffffffff812c063d>] ? read_reply+0xad/0x150
Nov  1 21:39:59 iron kernel: [<ffffffff8106a470>] ? 
autoremove_wake_function+0x0/0x30
Nov  1 21:39:59 iron kernel: [<ffffffff812c080d>] ? xs_talkv+0xed/0x1e0
Nov  1 21:39:59 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:59 iron kernel: [<ffffffff812c11b6>] ? xenbus_write+0x96/0xd0
Nov  1 21:39:59 iron kernel: [<ffffffff812c1286>] ? xenbus_printf+0x96/0xc0
Nov  1 21:39:59 iron kernel: [<ffffffff812c1556>] ? xenbus_scanf+0xa6/0xc0
Nov  1 21:39:59 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:59 iron kernel: [<ffffffff8100fed9>] ? 
xen_force_evtchn_callback+0x9/0x10
Nov  1 21:39:59 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:59 iron kernel: [<ffffffff812bf3de>] ? 
xenbus_switch_state+0x7e/0xb0
Nov  1 21:39:59 iron kernel: [<ffffffff812bf465>] ? xenbus_dev_fatal+0x55/0x60
Nov  1 21:39:59 iron kernel: [<ffffffff8100fed9>] ? 
xen_force_evtchn_callback+0x9/0x10
Nov  1 21:39:59 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:59 iron kernel: [<ffffffff8101089f>] ? 
xen_restore_fl_direct_end+0x0/0x1
Nov  1 21:39:59 iron kernel: [<ffffffff814ea40c>] ? 
_spin_unlock_irqrestore+0x2c/0x70
Nov  1 21:39:59 iron kernel: [<ffffffff812cc799>] ? 
pcistub_get_pci_dev_by_slot+0xb9/0xd0
Nov  1 21:39:59 iron kernel: [<ffffffff812cdb16>] ? 
pciback_export_device+0x96/0xc0
Nov  1 21:39:59 iron kernel: [<ffffffff812cdcb9>] ? pciback_be_watch+0x179/0x310
Nov  1 21:39:59 iron kernel: [<ffffffff810108b2>] ? check_events+0x12/0x20
Nov  1 21:39:59 iron kernel: [<ffffffff814e854f>] ? preempt_schedule+0x4f/0x70
Nov  1 21:39:59 iron kernel: [<ffffffff812c0dd5>] ? 
register_xenbus_watch+0xe5/0x100
Nov  1 21:39:59 iron kernel: [<ffffffff812ce3f1>] ? 
pciback_xenbus_probe+0x111/0x120
Nov  1 21:39:59 iron kernel: [<ffffffff812c21f9>] ? xenbus_dev_probe+0x79/0x150
Nov  1 21:39:59 iron kernel: [<ffffffff81303028>] ? 
driver_probe_device+0x98/0x1b0
Nov  1 21:39:59 iron kernel: [<ffffffff813031e0>] ? __device_attach+0x0/0x60
Nov  1 21:39:59 iron kernel: [<ffffffff813024cb>] ? bus_for_each_drv+0x5b/0x80
Nov  1 21:39:59 iron kernel: [<ffffffff81303305>] ? device_attach+0x85/0x90
Nov  1 21:39:59 iron kernel: [<ffffffff813022c5>] ? bus_probe_device+0x25/0x40
Nov  1 21:39:59 iron kernel: [<ffffffff81300943>] ? device_add+0x3b3/0x5c0
Nov  1 21:39:59 iron kernel: [<ffffffff8123a7a4>] ? kobject_init+0x34/0xb0
Nov  1 21:39:59 iron kernel: [<ffffffff812c1d2f>] ? 
xenbus_probe_node+0x11f/0x1a0
Nov  1 21:39:59 iron kernel: [<ffffffff81302800>] ? bus_for_each_dev+0x40/0x80
Nov  1 21:39:59 iron kernel: [<ffffffff812c0420>] ? xenwatch_thread+0x0/0x170
Nov  1 21:39:59 iron kernel: [<ffffffff812c1f6a>] ? 
xenbus_dev_changed+0x1ba/0x1d0
Nov  1 21:39:59 iron kernel: [<ffffffff812c0420>] ? xenwatch_thread+0x0/0x170
Nov  1 21:39:59 iron kernel: [<ffffffff812c04ab>] ? xenwatch_thread+0x8b/0x170
Nov  1 21:39:59 iron kernel: [<ffffffff8106a470>] ? 
autoremove_wake_function+0x0/0x30
Nov  1 21:39:59 iron kernel: [<ffffffff8106a0b6>] ? kthread+0xa6/0xc0
Nov  1 21:39:59 iron kernel: [<ffffffff8101617a>] ? child_rip+0xa/0x20
Nov  1 21:39:59 iron kernel: [<ffffffff81015327>] ? 
int_ret_from_sys_call+0x7/0x1b
Nov  1 21:39:59 iron kernel: [<ffffffff81015ae1>] ? retint_restore_args+0x5/0x6
Nov  1 21:39:59 iron kernel: [<ffffffff81016170>] ? child_rip+0x0/0x20


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