Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752635AbdFOUic (ORCPT ); Thu, 15 Jun 2017 16:38:32 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55228 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751141AbdFOUia (ORCPT ); Thu, 15 Jun 2017 16:38:30 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 4E08B61D2F Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jan.kratochvil@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 4E08B61D2F Date: Thu, 15 Jun 2017 22:38:24 +0200 From: Jan Kratochvil To: Jiri Olsa Cc: Milian Wolff , Linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , Namhyung Kim Subject: Re: [PATCH 1/2] perf report: ensure the perf DSO mapping matches what libdw sees Message-ID: <20170615203824.GA5513@host1.jankratochvil.net> References: <20170602143753.16907-1-milian.wolff@kdab.com> <20170605104130.GB28871@krava> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170605104130.GB28871@krava> User-Agent: Mutt/1.8.0 (2017-02-23) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Thu, 15 Jun 2017 20:38:29 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 461 Lines: 13 On Mon, 05 Jun 2017 12:41:30 +0200, Jiri Olsa wrote: > On Fri, Jun 02, 2017 at 04:37:52PM +0200, Milian Wolff wrote: > > Debug output showed me that libdw found a module for the last frame > > address, but it thinks it belongs to /usr/lib/ld-2.25.so. I find your patch as a correct workaround of an elfutils bug. I have filed it as: dwfl_addrmodule reports bogus modules for unmapped areas https://sourceware.org/bugzilla/show_bug.cgi?id=21602 Thanks, Jan