CentOS virt - Oct 2017 - Crash in CentOS 7 kernel-3.10.0-514.16.1.el7.x86_64 in Xen PV mode

On Mon, Oct 23, 2017 at 12:57 PM, Karl Johnson <karljohnson.it at
gmail.com>
wrote:
> On Sat, May 20, 2017 at 8:30 PM, Sarah Newman <srn at prgmr.com>
wrote:
>
>> I experienced a bug that is likely the same as
>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1350373 . Commit
>> b7dd0e350e0bd4c0fddcc9b8958342700b00b168 , which is supposed to fix it,
>> doesn't appear in this kernel and doesn't apply cleanly either.
>> Is there any point in trying to backport the patch?
>>
>> I had the same kernel panic while booting a PV domU on
> 3.10.0-693.2.2.el7.centos.plus.x86_64. I had to start the domU again to
> boot correctly. Can this patch be added to the CentOS 7 kernel-plus?
>
> Karl
>
?I can certainly add the patch (commit
b7dd0e350e0bd4c0fddcc9b8958342700b00b168)
to the Plus kernel.? It would be best if you could file a request on
http://bugs.centos.org so that we can track it better.

Akemi
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On Mon, Oct 23, 2017 at 11:08 PM, Akemi Yagi <amyagi at gmail.com> wrote:
> On Mon, Oct 23, 2017 at 12:57 PM, Karl Johnson <karljohnson.it at
gmail.com>
> wrote:
>
>> On Sat, May 20, 2017 at 8:30 PM, Sarah Newman <srn at prgmr.com>
wrote:
>>
>>> I experienced a bug that is likely the same as
>>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1350373 .
Commit
>>> b7dd0e350e0bd4c0fddcc9b8958342700b00b168 , which is supposed to fix
it,
>>> doesn't appear in this kernel and doesn't apply cleanly
either.
>>> Is there any point in trying to backport the patch?
>>>
>>> I had the same kernel panic while booting a PV domU on
>> 3.10.0-693.2.2.el7.centos.plus.x86_64. I had to start the domU again to
>> boot correctly. Can this patch be added to the CentOS 7 kernel-plus?
>>
>> Karl
>>
>
> ?I can certainly add the patch (commit
b7dd0e350e0bd4c0fddcc9b8958342700b00b168)
> to the Plus kernel.? It would be best if you could file a request on
> http://bugs.centos.org so that we can track it better.
>
> Akemi
>
?A CentOSPlus kernel ?set with the referenced patch applied is available
for testing at:

https://people.centos.org/toracat/kernel/7/plus/xen/

Feedback appreciated,

Akemi
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On Tue, Oct 24, 2017 at 3:36 AM, Akemi Yagi <amyagi at gmail.com> wrote:
> On Mon, Oct 23, 2017 at 11:08 PM, Akemi Yagi <amyagi at gmail.com>
wrote:
>
>> On Mon, Oct 23, 2017 at 12:57 PM, Karl Johnson <karljohnson.it at
gmail.com>
>> wrote:
>>
>>> On Sat, May 20, 2017 at 8:30 PM, Sarah Newman <srn at
prgmr.com> wrote:
>>>
>>>> I experienced a bug that is likely the same as
>>>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1350373 .
Commit
>>>> b7dd0e350e0bd4c0fddcc9b8958342700b00b168 , which is supposed to
fix
>>>> it, doesn't appear in this kernel and doesn't apply
cleanly either.
>>>> Is there any point in trying to backport the patch?
>>>>
>>>> I had the same kernel panic while booting a PV domU on
>>> 3.10.0-693.2.2.el7.centos.plus.x86_64. I had to start the domU
again to
>>> boot correctly. Can this patch be added to the CentOS 7
kernel-plus?
>>>
>>> Karl
>>>
>>
>> ?I can certainly add the patch (commit
b7dd0e350e0bd4c0fddcc9b8958342700b00b168)
>> to the Plus kernel.? It would be best if you could file a request on
>> http://bugs.centos.org so that we can track it better.
>>
>> Akemi
>>
>
> ?A CentOSPlus kernel ?set with the referenced patch applied is available
> for testing at:
>
> https://people.centos.org/toracat/kernel/7/plus/xen/
>
> Feedback appreciated,
>
> Akemi
>
Thanks for the build Akemi. I will try to test this kernel in the next days
however it will be hard to know if it fix the kernel panic because I can't
reproduce it. It's seems to be random and pretty rare in my case.
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