From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTPS id 1E76D385842B for ; Fri, 3 Mar 2023 11:51:44 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 1E76D385842B Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1677844303; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=PEcUFH3HFh1W+At5Z9ZAsqUoGI5Mkhg1vrpkqE7ZSiw=; b=SRXO8KaAvko55/FfozuPGdtAkY2dnM9TjX/KuBHGWIRLdCM5/VzOAlVeSzo2cHjxNY6EY9 Hc2DUgTa+a6cQT9+ydxNcVY7Utl5qJ6pkSzJDUG4gAGPFDO/ZCzzjC9Ya2kgo59FGfqF60 Z4jQ+gOof6GDb0B1ODPnPQT5mo4X+Bc= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-248-mqAdFQDmM5iAF7ZsQfSMuQ-1; Fri, 03 Mar 2023 06:51:40 -0500 X-MC-Unique: mqAdFQDmM5iAF7ZsQfSMuQ-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6137B87B2A0; Fri, 3 Mar 2023 11:51:40 +0000 (UTC) Received: from oldenburg.str.redhat.com (unknown [10.39.192.78]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 3F4454051E4A; Fri, 3 Mar 2023 11:51:39 +0000 (UTC) From: Florian Weimer To: Arsen =?utf-8?Q?Arsenovi=C4=87?= via Libc-alpha Cc: Arsen =?utf-8?Q?Arsenovi=C4=87?= , Carlos O'Donell , Gentoo Toolchain Subject: Re: [PATCH] elf,nptl: Add -z lazy -z norelro to tests that need it References: <20230302112519.914641-1-arsen@gentoo.org> Date: Fri, 03 Mar 2023 12:51:37 +0100 In-Reply-To: <20230302112519.914641-1-arsen@gentoo.org> ("Arsen =?utf-8?Q?Arsenovi=C4=87?= via Libc-alpha"'s message of "Thu, 2 Mar 2023 12:25:19 +0100") Message-ID: <87bklajbna.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-4.5 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: * Arsen Arsenovi=C4=87 via Libc-alpha: > Some toolchains, such as that used on Gentoo Hardened, set -z now -z > relro out of the box. These flags break tests that rely on fixups in > underlinked libraries being applied after a dlopen happens. I'm surprised that -z norelro is ever required. Why isn't -z lazy enough? If ld.so crashes because it attempts to apply relocations after the fact, woudln't that be an ld.so bug (or a linker bug that sets up the RELRO segment incorrectly)? Thanks, Florian