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=-3.8 required=3.0 tests=BAYES_00, 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 293A8C433E0 for ; Wed, 23 Dec 2020 07:13:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EE8EF2151B for ; Wed, 23 Dec 2020 07:13:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727314AbgLWHM7 (ORCPT ); Wed, 23 Dec 2020 02:12:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52698 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726960AbgLWHM7 (ORCPT ); Wed, 23 Dec 2020 02:12:59 -0500 Received: from ZenIV.linux.org.uk (zeniv.linux.org.uk [IPv6:2002:c35c:fd02::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CB0E8C0613D3; Tue, 22 Dec 2020 23:12:18 -0800 (PST) Received: from viro by ZenIV.linux.org.uk with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kryJh-003SSq-KZ; Wed, 23 Dec 2020 07:12:13 +0000 Date: Wed, 23 Dec 2020 07:12:13 +0000 From: Al Viro To: "Maciej W. Rozycki" Cc: Linus Torvalds , Thomas Bogendoerfer , Linux Kernel Mailing List , the arch/x86 maintainers , linux-mips@vger.kernel.org, Randy Dunlap , Denys Vlasenko Subject: Re: [PATCHSET] saner elf compat Message-ID: <20201223071213.GX3579531@ZenIV.linux.org.uk> References: <20201203214529.GB3579531@ZenIV.linux.org.uk> <20201203230336.GC3579531@ZenIV.linux.org.uk> <20201216030154.GL3579531@ZenIV.linux.org.uk> <20201223070320.GW3579531@ZenIV.linux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201223070320.GW3579531@ZenIV.linux.org.uk> Sender: Al Viro Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 23, 2020 at 07:03:20AM +0000, Al Viro wrote: Argh.... Wrong commit blamed - the parent of the correct one. It's actually 2aa362c49c31 ("coredump: extend core dump note section to contain file names of mapped files"). My apologies - fat-fingered cut'n'paste... siginfo commit does suffer the same problem, but it becomes an issue only for 32bit processes under mips64 big-endian kernel (there it yields e.g. zero .__sigfault.si_addr in $_siginfo when using gdb with a coredump of 32bit process, whatever the actual faulting address had been). And b-e mips64 is rather uncommon, so that's less of an issue.