linux-kernel - Re: [GIT PULL] perf fixes

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Message-ID: <20130930062735.GA13482@gmail.com>
Date:	Mon, 30 Sep 2013 08:27:35 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Andi Kleen <ak@...ux.intel.com>
Cc:	Markus Trippelsdorf <markus@...ppelsdorf.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [GIT PULL] perf fixes


* Andi Kleen <ak@...ux.intel.com> wrote:

> > breaks "perf top" on my machine. I just see a gray screen with no text
> > at all. Sometimes the following error messages are printed:
> >  *** Error in `perf': invalid fastbin entry (free): 0x00000000029b18c0 ***
> >  *** Error in `perf': malloc(): memory corruption (fast): 0x0000000000ee0b10 ***
> 
> Hmm, works for me. In fact I wrote it to fix a perf top issue.

What 'issue' and why wasn't it described in the changelog more accurately?

The blurb you wrote in the changelog:

| The libbfd C++ demangler doesn't seem to deal with cloned functions, 
| like symbol.clone.NUM.
|
| Just strip the dot part before demangling and add it back later.

Only alludes to a C++ symbol resolution annoyance and thus isn't very 
informative.

	Ingo
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