From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 297D3C2D0EE for ; Tue, 31 Mar 2020 13:21:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E657D20784 for ; Tue, 31 Mar 2020 13:21:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="XSpgwfvv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730974AbgCaNVF (ORCPT ); Tue, 31 Mar 2020 09:21:05 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:33398 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730963AbgCaNVF (ORCPT ); Tue, 31 Mar 2020 09:21:05 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1585660864; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=MeEto8FtHLX84bOWdZu7obHS/D8whODi/v8nAHpwl/c=; b=XSpgwfvv+0zmxx9YyQv5lMgiafbfVWItE0CC1oL1O3AP/8Sd+sqpjXnWobxoe/0oeD4Ld9 r/aCzTmVnPRuegj2mmf7wLG7lnfLRt4AKX+BTXF5bwal3SZg1FrZMFXKeP9nRZTVg/x6ms TdbV6g3LxaJx0nVrG5JSzvAHzqTuJwU= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-436-o-v-HHoBMDSxcI37yfVAAw-1; Tue, 31 Mar 2020 09:21:00 -0400 X-MC-Unique: o-v-HHoBMDSxcI37yfVAAw-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2245F18C35CD; Tue, 31 Mar 2020 13:20:58 +0000 (UTC) Received: from krava (unknown [10.40.194.72]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 881EB96B8F; Tue, 31 Mar 2020 13:20:54 +0000 (UTC) Date: Tue, 31 Mar 2020 15:20:52 +0200 From: Jiri Olsa To: ahmadkhorrami Cc: Milian Wolff , Steven Rostedt , Arnaldo Carvalho de Melo , Linux-trace Users , Peter Zijlstra , linux-trace-users-owner@vger.kernel.org, Jin Yao , Namhyung Kim , Andi Kleen Subject: Re: Wrong Perf Backtraces Message-ID: <20200331132052.GD2518490@krava> References: <821540886fc57d7749edee585a50602f@ut.ac.ir> <1867036.PIDvDuAF1L@agathebauer> <20200329192010.GA2361248@krava> <2522580.mvXUDI8C0e@agathebauer> <20200330130750.GC2361248@krava> <8cb4f94b11fbac6ca3a44b924b6ee7b3@ut.ac.ir> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Sender: linux-trace-users-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-trace-users@vger.kernel.org On Tue, Mar 31, 2020 at 05:13:00PM +0430, ahmadkhorrami wrote: > Hi, > Please confirm my thought in the previous email, if it is correct. > Regards. > On 2020-03-30 23:35, ahmadkhorrami wrote: > > > Hi, > > Sorry, I did not pay attention to the fact that we need debug info to be > > able to decode the callchain. So, without complete debug info the > > backtrace (either the symbols or the addresses) is bogus. But you say > > that the backtrace portions containing binaries with full debug info are > > OK. Am I right? Please confirm if this is the case. > > If so, these portions may be enough for my current usecase. you need debuginfo to resolve symbols and inlines, raw addresses should be coorect jirka