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Re: perf: hard fuzzer crash on 4.8-rc1

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: perf: hard fuzzer crash on 4.8-rc1
Date 2016-08-08 20:40 +0200
Message-ID <s3XCV-4YT-1@gated-at.bofh.it> (permalink)
References <s3X0d-4wO-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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@twins.programming.kicks-ass.net

If that's not it, I'll go prod tomorrow.

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Thread

perf: hard fuzzer crash on 4.8-rc1 Vince Weaver <vincent.weaver@maine.edu> - 2016-08-08 20:00 +0200
  Re: perf: hard fuzzer crash on 4.8-rc1 Peter Zijlstra <peterz@infradead.org> - 2016-08-08 20:40 +0200
    Re: perf: hard fuzzer crash on 4.8-rc1 Vince Weaver <vincent.weaver@maine.edu> - 2016-08-08 22:00 +0200
      Re: perf: hard fuzzer crash on 4.8-rc1 Peter Zijlstra <peterz@infradead.org> - 2016-08-08 22:20 +0200

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