From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758928Ab2CMAq5 (ORCPT ); Mon, 12 Mar 2012 20:46:57 -0400 Received: from mx1.redhat.com ([209.132.183.28]:33370 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758976Ab2CMAqy (ORCPT ); Mon, 12 Mar 2012 20:46:54 -0400 Date: Tue, 13 Mar 2012 01:46:42 +0100 From: Jan Kratochvil To: "H. Peter Anvin" Cc: Denys Vlasenko , Roland McGrath , linux-kernel@vger.kernel.org, Oleg Nesterov , Kushal Das Subject: Re: Extending coredump note section to contain filenames Message-ID: <20120313004642.GA19090@host2.jankratochvil.net> References: <20120309172934.GA18173@host2.jankratochvil.net> <4F5DE6A4.2030303@redhat.com> <20120312165359.GA32400@host2.jankratochvil.net> <4F5E76CE.4030601@zytor.com> <20120312223144.GA9636@host2.jankratochvil.net> <4F5E91DE.80609@zytor.com> <20120313002725.GA17828@host2.jankratochvil.net> <4F5E956F.3070108@zytor.com> <20120313003639.GA18427@host2.jankratochvil.net> <4F5E97EA.6030001@zytor.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4F5E97EA.6030001@zytor.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 On Tue, 13 Mar 2012 01:42:18 +0100, H. Peter Anvin wrote: > There is no 100% reliable solution possible -- you have no guarantee of > any kind that the library executable still exists. I have guarantee that the library binary mapped in memory identified by build-id can be found out there in the could. There is no other guarantee. And this guarantee fails with other solutions. If you say that it is _additional_ info to build-id then yes, one can always use build-id if everything else fails. But then the non-build-id information is redundant and it can just lead to wrong toolchain solutions - which has already happened (Apport). Regards, Jan