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 [216.205.24.124]) by sourceware.org (Postfix) with ESMTP id 618613850430 for ; Mon, 31 May 2021 12:16:38 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 618613850430 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-355-E5GmV72LMkax9CF1Biq7aA-1; Mon, 31 May 2021 08:16:35 -0400 X-MC-Unique: E5GmV72LMkax9CF1Biq7aA-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D6A02A0CB1; Mon, 31 May 2021 12:16:33 +0000 (UTC) Received: from oldenburg.str.redhat.com (ovpn-113-228.ams2.redhat.com [10.36.113.228]) by smtp.corp.redhat.com (Postfix) with ESMTPS id CC94378632; Mon, 31 May 2021 12:16:32 +0000 (UTC) From: Florian Weimer To: "H.J. Lu" Cc: Adhemerval Zanella , GNU C Library Subject: Re: [PATCH v7 1/3] Add an internal wrapper for clone, clone2 and clone3 References: <20210526123956.2712353-1-hjl.tools@gmail.com> <20210526123956.2712353-2-hjl.tools@gmail.com> <87h7ipsl03.fsf@oldenburg.str.redhat.com> <875yz5sjb4.fsf@oldenburg.str.redhat.com> Date: Mon, 31 May 2021 14:16:30 +0200 In-Reply-To: (H. J. Lu's message of "Mon, 31 May 2021 05:14:07 -0700") Message-ID: <87im2zdroh.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-6.4 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, KAM_NUMSUBJECT, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 31 May 2021 12:16:39 -0000 * H. J. Lu: > From: > > https://bugs.chromium.org/p/chromium/issues/detail?id=1213452#c5 > > They can modify the sandbox to return ENOSYS on clone3. Is this sufficient if we have detected before that the process supports CET and should enable it? I think browsers activate the sandbox *after* process initialization (unlike containers, where it happens before startup). Thanks, Florian