Bug#488284: linux-image-2.6.25-2-xen-686: kernel BUG at arch/x86/kernel/paravirt.c:241

[Ian Campbell-2]

Hi Ferenc,

This appears to have been seen a couple of times before:
http://www.kerneloops.org/raw.php?rawid=8416&msgid=http://mid.gmane.org/480CC04C.2020100@...
and
http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1248 

in particular the later suggests that 2.6.26-rc2 is ok -- are you able
to test that kernel (or a later one)?

Ian.

--
Ian Campbell

Error in operator: add beer

[Ferenc Wagner-2]

Ian Campbell <ijc@...> writes:

> This appears to have been seen a couple of times before:
> http://www.kerneloops.org/raw.php?rawid=8416&msgid=http://mid.gmane.org/480CC04C.2020100@...
> and
> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1248 
>
> in particular the later suggests that 2.6.26-rc2 is ok -- are you able
> to test that kernel (or a later one)?

Hi Ian,

I wgot linux-image-2.6.26-rc8-xen-686_2.6.26~rc8-1~experimental.1~snapshot.11752_i386.deb
and the corresponding modules, and the incriminated virtual machine
*booted up fine* with that.  This is something which never happened
with the 2.6.25 kernels I tried, so this problem is probably fixed.
I'll keep running this kernel for a while and report if anything goes
wrong.  I guess this bug can be closed now.
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Feri.



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[maximilian attems-9]

On Fri, Jul 04, 2008 at 11:29:39AM +0200, Ferenc Wagner wrote:

> Ian Campbell <ijc@...> writes:
>
> > This appears to have been seen a couple of times before:
> > http://www.kerneloops.org/raw.php?rawid=8416&msgid=http://mid.gmane.org/480CC04C.2020100@...
> > and
> > http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1248 
> >
> > in particular the later suggests that 2.6.26-rc2 is ok -- are you able
> > to test that kernel (or a later one)?
>
> Hi Ian,
>
> I wgot linux-image-2.6.26-rc8-xen-686_2.6.26~rc8-1~experimental.1~snapshot.11752_i386.deb
> and the corresponding modules, and the incriminated virtual machine
> *booted up fine* with that.  This is something which never happened
> with the 2.6.25 kernels I tried, so this problem is probably fixed.
> I'll keep running this kernel for a while and report if anything goes
> wrong.  I guess this bug can be closed now.
> --
> Thank you very much,
> Feri.

thanks for the testing adding bug closure to changelog.
will be closed on upload of 2.6.26

good to see improvements in xen mainline support :)

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maks




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[Ferenc Wagner-2]

maximilian attems <max@...> writes:

> On Fri, Jul 04, 2008 at 11:29:39AM +0200, Ferenc Wagner wrote:
>> Ian Campbell <ijc@...> writes:
>>
>>> This appears to have been seen a couple of times before:
>>> http://www.kerneloops.org/raw.php?rawid=8416&msgid=http://mid.gmane.org/480CC04C.2020100@...
>>> and
>>> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1248 
>>>
>>> in particular the later suggests that 2.6.26-rc2 is ok -- are you able
>>> to test that kernel (or a later one)?
>>
>> I wgot linux-image-2.6.26-rc8-xen-686_2.6.26~rc8-1~experimental.1~snapshot.11752_i386.deb
>> and the corresponding modules, and the incriminated virtual machine
>> *booted up fine* with that.  This is something which never happened
>> with the 2.6.25 kernels I tried, so this problem is probably fixed.
>> I'll keep running this kernel for a while and report if anything goes
>> wrong.  I guess this bug can be closed now.
>
> thanks for the testing adding bug closure to changelog.
> will be closed on upload of 2.6.26
>
> good to see improvements in xen mainline support :)

Yes.  Unfortunately I still can't save this domain.  Xen 3.0 doesn't
even try (xend.log):

[2008-07-04 12:22:45 xend 3797] DEBUG (__init__:1072) [xc_save]: /usr/lib/xen-3.0.3-1/bin/xc_save 19 14 0 0 0
[2008-07-04 12:22:45 xend 3797] ERROR (__init__:1072) Couldn't map p2m_frame_list_list (errno 14): 14
[2008-07-04 12:22:45 xend 3797] ERROR (__init__:1072) Save exit rc=1
[2008-07-04 12:22:45 xend 3797] ERROR (__init__:1072) Save failed on domain papigw.aai (14).
Traceback (most recent call last):
  File "/usr/lib/xen-3.0.3-1/lib/python/xen/xend/XendCheckpoint.py", line 100, in save
    forkHelper(cmd, fd, saveInputHandler, False)
  File "/usr/lib/xen-3.0.3-1/lib/python/xen/xend/XendCheckpoint.py", line 227, in forkHelper
    raise XendError("%s failed" % string.join(cmd))
XendError: /usr/lib/xen-3.0.3-1/bin/xc_save 19 14 0 0 0 failed

Xen 3.2 starts "migrating", but never finishes:

[2008-07-04 13:28:12 3753] DEBUG (__init__:1072) [xc_save]: /usr/lib/xen-3.2-1/bin/xc_save 24 1 0 0 0
[2008-07-04 13:28:12 3753] DEBUG (__init__:1072) suspend
[2008-07-04 13:28:12 3753] DEBUG (__init__:1072) In saveInputHandler suspend
[2008-07-04 13:28:12 3753] DEBUG (__init__:1072) Suspending 1 ...
[2008-07-04 13:28:12 3753] DEBUG (__init__:1072) XendDomainInfo.shutdown(suspend)
[2008-07-04 13:28:12 3753] DEBUG (__init__:1072) XendDomainInfo.handleShutdownWatch
[2008-07-04 13:28:12 3753] DEBUG (__init__:1072) XendDomainInfo.handleShutdownWatch

# xm list
Name                                        ID   Mem VCPUs      State   Time(s)
Domain-0                                     0   256     4     r-----     83.7
migrating-papigw.aai                         1   512     1     -b----     41.6

The domU was running all right for minutes, then I logged in and
halted it:

[2008-07-04 13:33:43 3753] INFO (__init__:1072) Domain has shutdown: name=migrating-papigw.aai id=1 reason=poweroff.
[2008-07-04 13:33:43 3753] INFO (__init__:1072) Domain 1 suspended.
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) XendDomainInfo.destroy: domid=1
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) Written done
[2008-07-04 13:33:43 3753] INFO (__init__:1072) ERROR Internal error: domain has shut down
[2008-07-04 13:33:43 3753] INFO (__init__:1072) ERROR Internal error: Domain appears not to have suspended
[2008-07-04 13:33:43 3753] INFO (__init__:1072) Save exit rc=1
[2008-07-04 13:33:43 3753] ERROR (__init__:1072) Save failed on domain papigw.aai (1).
Traceback (most recent call last):
  File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendCheckpoint.py", line 109, in save
    forkHelper(cmd, fd, saveInputHandler, False)
  File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendCheckpoint.py", line 353, in forkHelper
    raise XendError("%s failed" % string.join(cmd))
XendError: /usr/lib/xen-3.2-1/bin/xc_save 24 1 0 0 0 failed
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) XendDomainInfo.destroyDomain(1)
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) XendDomainInfo.resumeDomain(1)
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) Destroying device model
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) Releasing devices
Jul  4 13:33:43 xen2 kernel: ttyS0: 1 input overrun(s)
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) Removing vif/0
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) Destroying device model
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/0
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) Releasing devices
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) Removing vif/0
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) XendDomainInfo.destroyDevice: deviceClass = vif, device = vif/0
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) Removing vbd/51712
[2008-07-04 13:33:43 3753] DEBUG (__init__:1072) XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/51712
[2008-07-04 13:33:44 3753] DEBUG (__init__:1072) Removing vbd/51712
[2008-07-04 13:33:44 3753] DEBUG (__init__:1072) XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/51712
[2008-07-04 13:33:44 3753] DEBUG (__init__:1072) Removing console/0
[2008-07-04 13:33:44 3753] DEBUG (__init__:1072) XendDomainInfo.destroyDevice: deviceClass = console, device = console/0
[2008-07-04 13:33:44 3753] DEBUG (__init__:1072) Removing console/0
[2008-07-04 13:33:44 3753] DEBUG (__init__:1072) XendDomainInfo.destroyDevice: deviceClass = console, device = console/0
[2008-07-04 13:33:44 3753] DEBUG (__init__:1072) XendDomainInfo.resumeDomain: devices released
Jul  4 13:33:44 xen2 kernel: br894: port 2(vif1.0) entering disabled state
Jul  4 13:33:44 xen2 logger: /etc/xen/scripts/xen-hotplug-cleanup: XENBUS_PATH=backend/console/1/0
Jul  4 13:33:44 xen2 kernel: device vif1.0 left promiscuous mode
Jul  4 13:33:44 xen2 kernel: audit(1215171224.673:6): dev=vif1.0 prom=0 old_prom=256 auid=4294967295
Jul  4 13:33:44 xen2 kernel: br894: port 2(vif1.0) entering disabled state
Jul  4 13:33:44 xen2 logger: /etc/xen/scripts/block: remove XENBUS_PATH=backend/vbd/1/51712
Jul  4 13:33:44 xen2 logger: /etc/xen/scripts/vif-bridge: offline XENBUS_PATH=backend/vif/1/0
Jul  4 13:33:44 xen2 logger: /etc/xen/scripts/xen-hotplug-cleanup: XENBUS_PATH=backend/vbd/1/51712
Jul  4 13:33:44 xen2 heartbeat: [3923]: WARN: string2msg_ll: node [xen1] failed authentication
Jul  4 13:33:45 xen2 logger: /etc/xen/scripts/vif-bridge: brctl delif br894 vif1.0 failed
[2008-07-04 13:33:44 3753] ERROR (__init__:1072) XendDomainInfo.resume: xc.domain_resume failed on domain None.
Traceback (most recent call last):
  File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendDomainInfo.py", line 1941, in resumeDomain
    self._introduceDomain()
  File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendDomainInfo.py", line 1679, in _introduceDomain
    assert self.domid is not None
AssertionError
[2008-07-04 13:33:44 3753] ERROR (__init__:1072) Internal error handling xend.domain.save
Traceback (most recent call last):
  File "/usr/lib/xen-3.2-1/lib/python/xen/util/xmlrpclib2.py", line 131, in _marshaled_dispatch
    response = self._dispatch(method, params)
  File "SimpleXMLRPCServer.py", line 406, in _dispatch
    return func(*params)
  File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendDomain.py", line 1334, in domain_save
    raise e
AttributeError: 'NoneType' object has no attribute 'resumeDeviceModel'
Jul  4 13:33:45 xen2 logger: /etc/xen/scripts/vif-bridge: ifconfig vif1.0 down failed
Jul  4 13:33:45 xen2 logger: /etc/xen/scripts/vif-bridge: Successful vif-bridge offline for vif1.0, bridge br894.
Jul  4 13:33:45 xen2 logger: /etc/xen/scripts/xen-hotplug-cleanup: XENBUS_PATH=backend/vif/1/0

This probably warrants another bug report, but against which package?
--
Thanks,
Feri.



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[Ian Campbell-2]

On Fri, 2008-07-04 at 13:43 +0200, Ferenc Wagner wrote:
> Yes.  Unfortunately I still can't save this domain.  Xen 3.0 doesn't
> even try (xend.log):

The patches to support save/restore on pvops kernel's are queued for
2.6.27.

Ian.
--
Ian Campbell
Current Noise: Rollins Band - Move Right In / Hollow Man (Live)

The bigger the theory the better.




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[maximilian attems-9]

On Fri, Jul 04, 2008 at 01:01:17PM +0100, Ian Campbell wrote:
> On Fri, 2008-07-04 at 13:43 +0200, Ferenc Wagner wrote:
> > Yes.  Unfortunately I still can't save this domain.  Xen 3.0 doesn't
> > even try (xend.log):
>
> The patches to support save/restore on pvops kernel's are queued for
> 2.6.27.

right added them to d-kernel, they just need to be enabled.
didn't want to enable them without your word on it.

thanks

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[Ferenc Wagner-2]

Ian Campbell <ijc@...> writes:

> On Fri, 2008-07-04 at 13:43 +0200, Ferenc Wagner wrote:
>> Yes.  Unfortunately I still can't save this domain.  Xen 3.0 doesn't
>> even try (xend.log):
>
> The patches to support save/restore on pvops kernel's are queued for
> 2.6.27.

Ah, thanks.  And what about migration?  Is there a status page on the
web perhaps?  Or something similar, so that I know what's supposed to
work and what isn't?
--
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Feri.



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[Ferenc Wagner-2]

maximilian attems <max@...> writes:

> On Fri, Jul 04, 2008 at 01:01:17PM +0100, Ian Campbell wrote:
>> On Fri, 2008-07-04 at 13:43 +0200, Ferenc Wagner wrote:
>> > Yes.  Unfortunately I still can't save this domain.  Xen 3.0 doesn't
>> > even try (xend.log):
>>
>> The patches to support save/restore on pvops kernel's are queued for
>> 2.6.27.
>
> right added them to d-kernel, they just need to be enabled.
> didn't want to enable them without your word on it.

Did you backport them to the 2.6.26 series?  I'm not sure what
d-kernel means.
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Feri.



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[maximilian attems-9]

On Fri, Jul 04, 2008 at 03:08:12PM +0200, Ferenc Wagner wrote:

> maximilian attems <max@...> writes:
>
> > On Fri, Jul 04, 2008 at 01:01:17PM +0100, Ian Campbell wrote:
> >> On Fri, 2008-07-04 at 13:43 +0200, Ferenc Wagner wrote:
> >> > Yes.  Unfortunately I still can't save this domain.  Xen 3.0 doesn't
> >> > even try (xend.log):
> >>
> >> The patches to support save/restore on pvops kernel's are queued for
> >> 2.6.27.
> >
> > right added them to d-kernel, they just need to be enabled.
> > didn't want to enable them without your word on it.
>
> Did you backport them to the 2.6.26 series?  I'm not sure what
> d-kernel means.

i was speaking to Ian, he knows that i mean the repository.

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[maximilian attems-9]

On Fri, Jul 04, 2008 at 03:07:03PM +0200, Ferenc Wagner wrote:

> Ian Campbell <ijc@...> writes:
>
> > On Fri, 2008-07-04 at 13:43 +0200, Ferenc Wagner wrote:
> >> Yes.  Unfortunately I still can't save this domain.  Xen 3.0 doesn't
> >> even try (xend.log):
> >
> > The patches to support save/restore on pvops kernel's are queued for
> > 2.6.27.
>
> Ah, thanks.  And what about migration?  Is there a status page on the
> web perhaps?  Or something similar, so that I know what's supposed to
> work and what isn't?

http://wiki.xensource.com/xenwiki/XenParavirtOps

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[Ian Campbell-2]

On Fri, 2008-07-04 at 14:07 +0200, maximilian attems wrote:

> On Fri, Jul 04, 2008 at 01:01:17PM +0100, Ian Campbell wrote:
> > On Fri, 2008-07-04 at 13:43 +0200, Ferenc Wagner wrote:
> > > Yes.  Unfortunately I still can't save this domain.  Xen 3.0 doesn't
> > > even try (xend.log):
> >
> > The patches to support save/restore on pvops kernel's are queued for
> > 2.6.27.
>
> right added them to d-kernel, they just need to be enabled.
> didn't want to enable them without your word on it.

I set a build going this morning with them enabled. Hopefully I'll get a
chance to test the result over the next few days, but I'm away for some
of the weekend, so...

Ian.

--
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intoxicated, adj.:
        When you feel sophisticated without being able to pronounce it.




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[maximilian attems-9]

[ quick private reply, on the jump too ]

On Fri, Jul 04, 2008 at 03:43:14PM +0100, Ian Campbell wrote:
>
> I set a build going this morning with them enabled. Hopefully I'll get a
> chance to test the result over the next few days, but I'm away for some
> of the weekend, so...

thanks - no rush.

if it works just enable it in repo. :)

happy weekend!!

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[Ian Campbell-2]

On Fri, 2008-07-04 at 15:07 +0200, Ferenc Wagner wrote:

> Ian Campbell <ijc@...> writes:
>
> > On Fri, 2008-07-04 at 13:43 +0200, Ferenc Wagner wrote:
> >> Yes.  Unfortunately I still can't save this domain.  Xen 3.0 doesn't
> >> even try (xend.log):
> >
> > The patches to support save/restore on pvops kernel's are queued for
> > 2.6.27.
>
> Ah, thanks.  And what about migration?

migration is (in theory) a special case of suspend and resume...

Ian.
--
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Current Noise: Rollins Band - Jam (Live)

The older a man gets, the farther he had to walk to school as a boy.




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[Ferenc Wagner-2]

Ian Campbell <ijc@...> writes:

> On Fri, 2008-07-04 at 15:07 +0200, Ferenc Wagner wrote:
>> Ian Campbell <ijc@...> writes:
>>
>>> On Fri, 2008-07-04 at 13:43 +0200, Ferenc Wagner wrote:
>>>> Yes.  Unfortunately I still can't save this domain.  Xen 3.0 doesn't
>>>> even try (xend.log):
>>>
>>> The patches to support save/restore on pvops kernel's are queued for
>>> 2.6.27.
>>
>> Ah, thanks.  And what about migration?
>
> migration is (in theory) a special case of suspend and resume...

Thanks, I expected this.
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[Ferenc Wagner-2]

maximilian attems <max@...> writes:

> On Fri, Jul 04, 2008 at 03:07:03PM +0200, Ferenc Wagner wrote:
>> Ian Campbell <ijc@...> writes:
>>
>>> On Fri, 2008-07-04 at 13:43 +0200, Ferenc Wagner wrote:
>>>> Yes.  Unfortunately I still can't save this domain.  Xen 3.0 doesn't
>>>> even try (xend.log):
>>>
>>> The patches to support save/restore on pvops kernel's are queued for
>>> 2.6.27.
>>
>> Ah, thanks.  And what about migration?  Is there a status page on the
>> web perhaps?  Or something similar, so that I know what's supposed to
>> work and what isn't?
>
> http://wiki.xensource.com/xenwiki/XenParavirtOps

Thanks!  Looks like Lenny won't have real Xen support after all. :(
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Feri.



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