power9 NUMA crash while reading debugfs imc_cmd

[Anju T Sudhakar]

On 6/28/19 9:04 AM, Qian Cai wrote:
>
>> On Jun 27, 2019, at 11:12 PM, Michael Ellerman <mpe at ellerman.id.au> wrote:
>>
>> Qian Cai <cai at lca.pw> writes:
>>> Read of debugfs imc_cmd file for a memory-less node will trigger a crash below
>>> on this power9 machine which has the following NUMA layout.
>> What type of machine is it?
> description: PowerNV
> product: 8335-GTH (ibm,witherspoon)
> vendor: IBM
> width: 64 bits
> capabilities: smp powernv opal


Hi Qian Cai,

Could you please try with this patch: 
https://lists.ozlabs.org/pipermail/linuxppc-dev/2019-June/192803.html

and see if the issue is resolved?


Thanks,

Anju