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Date: Mon, 8 Aug 2016 20:30:33 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Vince Weaver <vincent.weaver@...ne.edu>
Cc: linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: Re: perf: hard fuzzer crash on 4.8-rc1
On Mon, Aug 08, 2016 at 01:57:28PM -0400, Vince Weaver wrote:
> Hello
>
> I've finally had time to get the perf_fuzzer going on a 4.8-rc1 kernel on
> a Haswell machine.
>
> It locks up pretty quickly, I even have a marginally reproducible test case.
> The problem is the serial console only prints the following before giving
> up:
>
> [ 637.250130] BUG: unable to handle kernel
>
> About 10 times of triggering this, this is all I get. Machine is fairly
> thoroughly locked at that point.
>
> Any advice on how to debug this more?
I have this pending:
lkml.kernel.org/r/20160804123724.GN6862@...ns.programming.kicks-ass.net
If that's not it, I'll go prod tomorrow.
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