On 6/28/19 9:04 AM, Qian Cai wrote:

quoted

On Jun 27, 2019, at 11:12 PM, Michael Ellerman [off-list ref] wrote:

Qian Cai [off-list ref] writes:

quoted

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