Subject: Re: [powerpc/powervm]Oops: Kernel access of bad area, sig: 11 [#1] while running stress-ng

From: vrbagal1 <[email-masked]>
Date: Tue, 10 Jul 2018 15:41:21 +0530

On 2018-07-10 13:37, Nicholas Piggin wrote:
> On Tue, 10 Jul 2018 11:58:40 +0530
> vrbagal1 <[email-masked]> wrote:
> 
>> Hi,
>> 
>> Observing kernel oops on Power9(ZZ) box, running on PowerVM, while
>> running stress-ng.
>> 
>> 
>> Kernel: 4.18.0-rc4
>> Machine: Power9 ZZ (PowerVM)
>> Test: Stress-ng
>> 
>> Attached is .config file
>> 
>> Traces:
>> 
>>   [12251.245209] Oops: Kernel access of bad area, sig: 11 [#1]
> 
> Can you post the lines above this? Otherwise we don't know what address
> it tried to access (without decoding the instructions and 
> reconstructing
> it from registers at least, which the XFS devs wouldn't be inclined to
> do).
> 

ah my bad.

  [12251.245179] Unable to handle kernel paging request for data at 
address 0x6000000060000000
  [12251.245199] Faulting instruction address: 0xc000000000319e2c

> And I assume there is nothing else relevant to XFS in the dmesg before
> this?

Nothing relevant in dmesg

Regards,
Venkat.

> Thanks,
> Nick