[Xen-devel] BLKTAP causing kernel BUG at arch/i386/mm/hypervisor.c:71

[Roland Paterson-Jones <roland@xxxxxxxxxxxx>]

I have further blktap woes. I recompiled xen-unstable with blktap on 
major number 244 (arbitrary choice) to avoid major number clash on 254.
However, subsequently:

[root@dom0-0-50-45-5d-59-aa ~]# blktapctrl

Debug output from /var/log/messages (syslog):

Sep 21 15:34:46 dom0-0-50-45-5d-59-aa BLKTAPCTRL: blktapctrl: v1.0.0
Sep 21 15:34:46 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Found driver: [raw 
image (aio)]
Sep 21 15:34:46 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Found driver: [raw 
image (sync)]
Sep 21 15:34:46 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Found driver: [vmware 
image (vmdk)]
Sep 21 15:34:46 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Found driver: [ramdisk 
image (ram)]
Sep 21 15:34:46 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Found driver: [qcow 
disk (qcow)]
Sep 21 15:34:46 dom0-0-50-45-5d-59-aa BLKTAPCTRL: /dev/xen/blktap0 
device already exists
So far so good(?). There is a running blktapctrl process, no longer 
pinned at 100%. So, I try to create a tap:aio device:
[root@dom0-0-50-45-5d-59-aa ~]# xm block-attach 0 
tap:aio:/tmp/sparse.img /dev/xvda1 w 0
At this stage all hell breaks loose, culminating in a hypervisor panic. 
Here's the log:
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Received a poll for a 
new vbd
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Created 
/dev/xen/blktap1 device
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Received device id 1 
and major 244, sent domid 0 and be_id 51713
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Detected handle: [aio]
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Process does not exist:
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Launching process, 
CMDLINE [tapdisk /dev/xen/tapctrlwrite1 /dev/xen/tapctrlread1]
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa kernel: tap tap-0-51713: 2 getting 
info
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Write_msg called: 
CTLMSG_PID
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa TAPDISK: Tapdisk: Received msg, 
len 8, type 9, UID 19716
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Received CTLMSG_PID_RSP
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL:       PID: [4042]
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Write_msg called: 
CTLMSG_PARAMS, sending [aio:/tmp/sparse.img, /tmp/sparse.img]
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Generated cookie, 19716
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa TAPDISK: Tapdisk: Received msg, 
len 24, type 1, UID 19716
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa TAPDISK: Received CTLMSG_PARAMS: 
[/tmp/sparse.img]
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa TAPDISK: Loaded driver: name 
[tapdisk_aio], type [0]
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa TAPDISK: block-aio 
open('/tmp/sparse.img')
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa TAPDISK: open(/tmp/sparse.img) 
with O_DIRECT
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa TAPDISK: Image size:      pre 
sector_shift  [268435456]   post sector_shift [524288]
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa TAPDISK: Adding fd_list_entry
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa TAPDISK: Entered cookie 19716
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Received CTLMSG_IMG: 
524288, 512, 0
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Received a poll for a 
new devmap
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa logger: /etc/xen/scripts/blktap: 
add XENBUS_PATH=backend/tap/0/51713
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Write_msg called: 
CTLMSG_NEWDEV
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa TAPDISK: Tapdisk: Received msg, 
len 12, type 4, UID 19716
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa logger: /etc/xen/scripts/blktap: 
Writing backend/tap/0/51713/hotplug-status connected to xenstore.
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa TAPDISK: Retrieving state, cookie 
19716.....[OK]
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Received CTLMSG_NEWDEV_RSP
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa BLKTAPCTRL: Exiting map_new_blktapctrl
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa kernel: Registering block device 
major 202
Sep 21 15:35:24 dom0-0-50-45-5d-59-aa logger: /etc/xen/scripts/blktap: 
add XENBUS_PATH=backend/tap/0/51713
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa logger: /etc/xen/scripts/blktap: 
Writing backend/tap/0/51713/hotplug-status connected to xenstore.
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 524160
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: printk: 52 messages 
suppressed.
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: Buffer I/O error on device 
xvda1, logical block 65520
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 524160
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: Buffer I/O error on device 
xvda1, logical block 65520
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 524280
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: Buffer I/O error on device 
xvda1, logical block 65535
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 524280
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: Buffer I/O error on device 
xvda1, logical block 65535
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 524280
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: Buffer I/O error on device 
xvda1, logical block 65535
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 524280
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: Buffer I/O error on device 
xvda1, logical block 65535
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 524280
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: Buffer I/O error on device 
xvda1, logical block 65535
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 524280
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: Buffer I/O error on device 
xvda1, logical block 65535
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 524224
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: Buffer I/O error on device 
xvda1, logical block 65528
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 524224
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: Buffer I/O error on device 
xvda1, logical block 65528
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 524272
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 524272
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa last message repeated 8 times
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:25 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa last message repeated 10 times
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa last message repeated 10 times
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 72
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 160
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 248
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:26 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:27 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: blk_tap: invalid user 
buffer -- could not remap it
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: blk_tap: Reached Fail_flush
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: blk_tap: BLKTAP_INVALID_HANDLE
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: WARNING: g.e. still in use!
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: WARNING: leaking g.e. and 
page still in use!
Sep 21 15:35:28 dom0-0-50-45-5d-59-aa kernel: end_request: I/O error, 
dev xvda1, sector 0
Sep 21 15:35:30 dom0-0-50-45-5d-59-aa kernel: ------------[ cut here 
]------------
Sep 21 15:35:30 dom0-0-50-45-5d-59-aa kernel: kernel BUG at 
arch/i386/mm/hypervisor.c:71!
Sep 21 15:35:30 dom0-0-50-45-5d-59-aa kernel: invalid opcode: 0000 [#1]
Sep 21 15:35:30 dom0-0-50-45-5d-59-aa kernel: SMP
Sep 21 15:35:30 dom0-0-50-45-5d-59-aa kernel: Modules linked in: 
xt_limit xt_tcpudp xt_state ip_conntrack nfnetlink ip_queue 
iptable_filter ip_tables x_tables autofs4 video thermal processor fan 
button battery ac shpchp pci_hotplug tg3 dm_snapshot dm_zero dm_mirror 
ext3 jbd raid1 dm_mod 3w_9xxx sd_mod
Sep 21 15:35:30 dom0-0-50-45-5d-59-aa kernel: CPU:    0
Sep 21 15:35:30 dom0-0-50-45-5d-59-aa kernel: EIP:    
0061:[<c0117584>]    Tainted: GF     VLI
Sep 21 15:35:30 dom0-0-50-45-5d-59-aa kernel: EFLAGS: 00010282   
(2.6.16.13-xen0 #1)
Sep 21 15:35:30 dom0-0-50-45-5d-59-aa kernel: EIP is at 
xen_l2_entry_update+0x84/0x90
Sep 21 15:35:30 dom0-0-50-45-5d-59-aa kernel: eax: ffffffea   ebx: 
cab7edd0   ecx: 00000001   edx: 00000000
Sep 21 15:35:30 dom0-0-50-45-5d-59-aa kernel: esi: 00007ff0   edi: 
00000002   ebp: cab7edec   esp: cab7edd0
Sep 21 15:35:30 dom0-0-50-45-5d-59-aa kernel: ds: 007b   es: 007b   ss: 0069
Sep 21 15:35:30 dom0-0-50-45-5d-59-aa kernel: Process 05-pam_console. 
(pid: 4076, threadinfo=cab7e000 task=c06b4030)
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel: Stack: <0>06b57df8 
00000002 06769067 00000002 c1000000 06769067 00000002 cab7ee6c
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:        c014ed43 c9957df8 
06769067 00000002 00000061 80000000 c11a43c0 cab7ee18
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:        cd7e5c10 d002dba4 
cab7ee30 c0141d05 d002db98 00000019 0000001f 00000067
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel: Call Trace:
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c01058ed>] 
show_stack_log_lvl+0xcd/0x120
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0105aeb>] 
show_registers+0x1ab/0x240
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0105e11>] die+0x111/0x240
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0106178>] 
do_trap+0x98/0xe0
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0106491>] 
do_invalid_op+0xa1/0xb0
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c01052bb>] 
error_code+0x2b/0x30
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c014ed43>] 
__pte_alloc+0x1d3/0x2a0
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c015320e>] 
__handle_mm_fault+0xc6e/0x1090
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0114e45>] 
do_page_fault+0x395/0xc3b
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c01052bb>] 
error_code+0x2b/0x30
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel: Code: 4d e4 b9 01 00 00 00 
89 5d e8 8d 5d e4 89 55 f0 31 d2 89 45 ec e8 ad 9a fe ff 85 c0 78 0d 8b 
5d f4 8b 75 f8 8b 7d fc 89 ec 5d c3 <0f> 0b 47 00 a7 48 38 c0 eb e9 89 
f6 55 89 e5 83 ec 1c 8b 45 08
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  <0>BUG: spinlock 
recursion on CPU#0, 05-pam_console./4076
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  lock: cd7e5c10, .magic: 
dead4ead, .owner: 05-pam_console./4076, .owner_cpu: 0
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0105bb3>] 
show_trace+0x13/0x20
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0105bde>] 
dump_stack+0x1e/0x20
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c02085f0>] 
spin_bug+0xa0/0xc0
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0208a59>] 
_raw_spin_lock+0x149/0x150
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c036f37e>] 
_spin_lock+0xe/0x10
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0114133>] 
mm_unpin+0x23/0x40
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c01141d2>] 
_arch_exit_mmap+0x82/0x1a0
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0154bb2>] 
exit_mmap+0x22/0x120
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c011db46>] mmput+0x36/0xa0
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c01219c0>] 
exit_mm+0xa0/0x150
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0122783>] 
do_exit+0xf3/0x870
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0105f35>] die+0x235/0x240
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0106178>] 
do_trap+0x98/0xe0
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0106491>] 
do_invalid_op+0xa1/0xb0
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c01052bb>] 
error_code+0x2b/0x30
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c014ed43>] 
__pte_alloc+0x1d3/0x2a0
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c015320e>] 
__handle_mm_fault+0xc6e/0x1090
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c0114e45>] 
do_page_fault+0x395/0xc3b
Sep 21 15:35:31 dom0-0-50-45-5d-59-aa kernel:  [<c01052bb>] 
error_code+0x2b/0x30
Sep 21 15:35:42 dom0-0-50-45-5d-59-aa pangolin[2623]: Service time: 
go=0.000s P=0.000s[u=0.000s,s=0.000s] C=0.000s[u=0.000s,s=0.000s]
Message from syslogd@dom0-0-50-45-5d-59-aa at Thu Sep 21 15:36:11 2006 ...
dom0-0-50-45-5d-59-aa kernel: BUG: spinlock lockup on CPU#0, 
05-pam_console./4076, cd7e5c10
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel: BUG: spinlock lockup on 
CPU#0, 05-pam_console./4076, cd7e5c10
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c0105bb3>] 
show_trace+0x13/0x20
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c0105bde>] 
dump_stack+0x1e/0x20
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c0208a20>] 
_raw_spin_lock+0x110/0x150
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c036f37e>] 
_spin_lock+0xe/0x10
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c0114133>] 
mm_unpin+0x23/0x40
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c01141d2>] 
_arch_exit_mmap+0x82/0x1a0
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c0154bb2>] 
exit_mmap+0x22/0x120
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c011db46>] mmput+0x36/0xa0
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c01219c0>] 
exit_mm+0xa0/0x150
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c0122783>] 
do_exit+0xf3/0x870
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c0105f35>] die+0x235/0x240
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c0106178>] 
do_trap+0x98/0xe0
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c0106491>] 
do_invalid_op+0xa1/0xb0
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c01052bb>] 
error_code+0x2b/0x30
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c014ed43>] 
__pte_alloc+0x1d3/0x2a0
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c015320e>] 
__handle_mm_fault+0xc6e/0x1090
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c0114e45>] 
do_page_fault+0x395/0xc3b
Sep 21 15:36:11 dom0-0-50-45-5d-59-aa kernel:  [<c01052bb>] 
error_code+0x2b/0x30
Sep 21 15:36:12 dom0-0-50-45-5d-59-aa pangolin[2623]: Service time: 
go=0.000s P=0.000s[u=0.000s,s=0.000s] C=0.000s[u=0.000s,s=0.000s]
Sep 21 15:36:42 dom0-0-50-45-5d-59-aa pangolin[2623]: Service time: 
go=0.000s P=0.000s[u=0.000s,s=0.000s] C=0.000s[u=0.000s,s=0.000s]
Sep 21 15:37:03 dom0-0-50-45-5d-59-aa kernel: BUG: soft lockup detected 
on CPU#0!
Sep 21 15:37:03 dom0-0-50-45-5d-59-aa kernel:
Sep 21 15:37:03 dom0-0-50-45-5d-59-aa kernel: Pid: 4076, comm:      
05-pam_console.
Sep 21 15:37:03 dom0-0-50-45-5d-59-aa kernel: EIP: 0061:[<c0208a2f>] CPU: 0
Sep 21 15:37:03 dom0-0-50-45-5d-59-aa kernel: EIP is at 
_raw_spin_lock+0x11f/0x150
Sep 21 15:37:03 dom0-0-50-45-5d-59-aa kernel:  EFLAGS: 00000246    
Tainted: GF      (2.6.16.13-xen0 #1)
Sep 21 15:37:03 dom0-0-50-45-5d-59-aa kernel: EAX: 00000000 EBX: 
00000000 ECX: 016f20fd EDX: 00000000
Sep 21 15:37:03 dom0-0-50-45-5d-59-aa kernel: ESI: cd7e5c10 EDI: 
00000000 EBP: cab7eb7c DS: 007b ES: 007b
Sep 21 15:37:03 dom0-0-50-45-5d-59-aa kernel: CR0: 8005003b CR2: 
b7f17004 CR3: 008f5000 CR4: 00000660
???
Roland

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