linux-kernel - Re: [BUG] hackbench locks up with perf in 3.11-rc1 and beyond

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Date:	Thu, 08 Aug 2013 09:21:03 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Christoph Lameeter <cl@...ux.com>,
	Wanpeng Li <liwanp@...ux.vnet.ibm.com>,
	Pekka Enberg <penberg@...nel.org>
Subject: Re: [BUG] hackbench locks up with perf in 3.11-rc1 and beyond

On Thu, 2013-08-08 at 00:08 -0400, Steven Rostedt wrote:
> I went to do some benchmarks on the jump label code, and ran:
> 
> 
> perf stat -r 100 ./hackbench 50
> 

Note, perf doesn't even need to be involved. Running hackbench manually
three times causes the bug too.

-- Steve


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