linux-kernel - Re: perf crash with tip/perf/core

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Date:	Fri, 3 Jun 2016 18:55:34 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Ingo Molnar <mingo@...nel.org>, Jiri Olsa <jolsa@...nel.org>,
	David Ahern <dsahern@...il.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Wang Nan <wangnan0@...wei.com>,
	Andi Kleen <andi@...stfloor.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: perf crash with tip/perf/core

Em Fri, Jun 03, 2016 at 11:37:05PM +0200, Peter Zijlstra escreveu:
> On Fri, Jun 03, 2016 at 06:27:40PM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Fri, Jun 03, 2016 at 06:15:15PM -0300, Arnaldo Carvalho de Melo escreveu:
> > > Hi Peter,
> > > 
> > > 	I built what is in tip/perf/core to test the topdown patches
> > > from Andi but it is crashing on me, 'perf stat' was ok, but then I tried
> > > 'perf trace' and got the NULL deref below, bet 'perf record' will do the same.
> > 
> > Yeah, just tried with 'perf record usleep 1'  and got:
> 
> Does
> 
> lkml.kernel.org/r/1464809585-66072-1-git-send-email-davidcc@...gle.com
> 
> fix it?

yeap, thanks, fwiw:

Tested-by: Arnaldo Carvalho de Melo <acme@...hat.com>

- Arnaldo