linux-kernel - Re: perf: kernel memory leak when inherit enabled

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Message-ID: <alpine.DEB.2.00.1103141824190.13179@cl320.eecs.utk.edu>
Date:	Mon, 14 Mar 2011 18:27:19 -0400 (EDT)
From:	Vince Weaver <vweaver1@...s.utk.edu>
To:	linux-kernel@...r.kernel.org
cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: perf: kernel memory leak when inherit enabled

On Fri, 11 Mar 2011, Vince Weaver wrote:
> 
> While trying to use perf events with inherit enabled to profile some 
> multi-threaded BLAS routines (using PAPI) I ended up out-of-memorying my 
> machine.  It turns out you can quickly leak gigabytes of kernel memory
> that isn't freed when the process exits.

I've bisected this.  There's a whole day I'll never see again. binutils 
2.21 and gcc-4.5 for the lose :(

Anyway this memory leak with inherit was introduced in 
  4fd38e4595e

Vince

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