Kernel crashes with trace ending in XFS code on RHEL6 variant kernel

[Eric Sandeen]

On 10/28/14 3:01 PM, Stefan Ring wrote:
> On Tue, Oct 28, 2014 at 6:42 PM, Eric Sandeen <sandeen at sandeen.net> wrote:
>> On 10/28/14 10:38 AM, Jan Kokoska wrote:
>>> Hi,
>>>
>>> I'm running OpenVZ (OS container) kernel variant of RHEL6 kernel on
>>
>> ... for which we have no source code? ;)
>>
>> I don't know what's in "2.6.32-openvz-amd64" so can't help much.
>>
>> What is at line 86 of xfs_aops.c in that kernel?
> 
> From my quick investigation, it would seem to be the line "bh = head =
> page_buffers(page);" of xfs_count_page_state.

Yes, I think you're right, but my point is this is a kernel which we don't
maintain.

Anyway, I don't know for sure offhand what this could be; 
upstream ef5d437f71afdf4afdbab99213add99f4b1318fd looks related, but
TBH I'm not sure if it's specific to S390.

-Eric