From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753444Ab2CCOEL (ORCPT ); Sat, 3 Mar 2012 09:04:11 -0500 Received: from mail-gx0-f174.google.com ([209.85.161.174]:63897 "EHLO mail-gx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753134Ab2CCOEJ (ORCPT ); Sat, 3 Mar 2012 09:04:09 -0500 Authentication-Results: mr.google.com; spf=pass (google.com: domain of arnaldo.melo@gmail.com designates 10.236.181.233 as permitted sender) smtp.mail=arnaldo.melo@gmail.com; dkim=pass header.i=arnaldo.melo@gmail.com Date: Sat, 3 Mar 2012 11:04:05 -0300 From: Arnaldo Carvalho de Melo To: David Ahern Cc: LKML , Ingo Molnar Subject: Re: perf_guest default bug Message-ID: <20120303140405.GB16301@infradead.org> References: <4F5118B1.5070406@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4F5118B1.5070406@gmail.com> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Fri, Mar 02, 2012 at 12:00:01PM -0700, David Ahern escreveu: > Similar to my last email, this patch is not in urgent trees or > Linus' yet the problem exists in Linus' tree: > https://lkml.org/lkml/2012/2/17/82 > > $ /tmp/pbuild/perf record -a -- sleep 1 > [ perf record: Woken up 1 times to write data ] > [ perf record: Captured and wrote 0.319 MB perf.data (~13935 samples) ] > Segmentation fault > > Root cause is the perf_guest setting. > > $ /tmp/pbuild/perf --version > perf version 3.3.rc5.60.g203738 This one was tricky, IIRC, weren't follow up patches needed to plug some extra problems? - Arnaldo