kselftest:lost_exception_test failure with 4.11.0-rc5

[Sachin Sant]

> On 07-Apr-2017, at 6:06 PM, Michael Ellerman <mpe at ellerman.id.au> wrote:
> 
> Sachin Sant <sachinp at linux.vnet.ibm.com> writes:
> 
>> I have run into few instances where the lost_exception_test from
>> powerpc kselftest fails with SIGABRT. Following o/p is against
>> 4.11.0-rc5. The failure is intermittent. 
> 
> What hardware are you on?

I have seen this problem on a POWER8 LPAR.

> 
> How long does it take to run when it fails? I assume ~2 minutes?

Yes somewhere around 2 min.


>> MMCR2 0x0000000000000000
>> EBBHR 0x0000000010003dcc
>> BESCR 0x8000000100000000 GE PMAE 
> 
> And that says we have global enable set and events enabled.
> 
> 
> So I think there is a bug here somewhere. I don't really have time to
> dig into it now, neither does Maddy I think. But we should try and get
> to it at some point.
> 

Let me know if I can help with debug.

Thanks
-Sachin


> cheers
>