Re: [Xen-devel] crash on boot with 4.6.1 on fedora 24

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 06/01/2016 05:01 PM, Martin Cerveny wrote:
> Hello.
>
> On Wed, 1 Jun 2016, Boris Ostrovsky wrote:
>> On 06/01/2016 12:23 PM, Martin Cerveny wrote:
>>> :-(
>>>
>>> On Wed, 1 Jun 2016, Martin Cerveny wrote:
>>>> I hit probably the same error with released "XenServer 7.0".
>>>> - I have Xen4.6.1 (commit d77bac5c064ffb9dbb5b89b55b89853f1b784ebf -
>>>> update Xen version to 4.6.1)
>>>> - XS7 (Dundee) beta3 (kernel-3.10.96-479.383024.x86_64.rpm) work OK
>>>> - XS7 release (kernel-3.10.96-484.383030.x86_64.rpm) crash
>>>> - patch does not work, arch/x86/xen/mmu.c is very old in 3.10
>>>> - Can someone verify error ?
>>>>
>>>> Thanks, Martin Cerveny
>>>>
>>>> Crash (kernel-3.10.96-479.383024.x86_64.rpm):
>>>          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>> correction: kernel-3.10.96-484.383030.x86_64.rpm
>> If you can provide vmlinux (better) or System.map we can probably see
>> whether it's the same signature.
>
> http://xenserver.org/open-source-virtualization-download.html
> ->
> XenServer-7.0.0-main.iso or XenServer-7.0.0-binpkg.iso
> ->
> kernel-3.10.96-484.383030.x86_64.rpm
> ->
> System.map-3.10.0+10  vmlinuz-3.10.0+10
> ->
> http://s000.tinyupload.com/index.php?file_id=30528714656973136220
>
> Thanks for analyzing, Martin


This looks like a different problem, the stack is
...
start_kernel
    cleanup_highmap
        xen_set_pmd_hyper
            arbitrary_virt_to_machine

Can you reproduce this with a newer kernel?

-boris


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