Re: perf related lockdep bug

From: Andi Kleen
Date: Wed Nov 04 2015 - 21:46:15 EST

On Wed, Nov 04, 2015 at 04:55:28PM -0800, Paul E. McKenney wrote:
> On Wed, Nov 04, 2015 at 09:58:36PM +0100, Andi Kleen wrote:
> >
> > I tested my perf stress workload with the patch applied on 4.3,
> > unfortunately got a hang again :-/
> Any diagnostics, sysrq-T output, or whatever?

The system was dead in the screen saver, no serial console.
I restarted it and may have some more information tomorrow.

The previous hangs were usually timeout on smp_call_function,
so one CPU disappeared.

I'll try the extra hunk you pointed out.

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