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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82130C433EF for ; Wed, 23 Feb 2022 12:39:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240499AbiBWMj0 (ORCPT ); Wed, 23 Feb 2022 07:39:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50066 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234668AbiBWMj0 (ORCPT ); Wed, 23 Feb 2022 07:39:26 -0500 X-Greylist: delayed 1600 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Wed, 23 Feb 2022 04:38:57 PST Received: from mail.sf-mail.de (mail.sf-mail.de [IPv6:2a01:4f8:1c17:6fae:616d:6c69:616d:6c69]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A1813A0BED for ; Wed, 23 Feb 2022 04:38:57 -0800 (PST) Received: (qmail 25820 invoked from network); 23 Feb 2022 12:10:27 -0000 Received: from p200300cf070b2500041073fffe58035b.dip0.t-ipconnect.de ([2003:cf:70b:2500:410:73ff:fe58:35b]:33114 HELO eto.sf-tec.de) (auth=eike@sf-mail.de) by mail.sf-mail.de (Qsmtpd 0.38dev) with (TLS_AES_256_GCM_SHA384 encrypted) ESMTPSA for ; Wed, 23 Feb 2022 13:10:27 +0100 From: Rolf Eike Beer To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@lst.de, guoren@kernel.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: Re: [PATCH V5 17/21] riscv: compat: vdso: Add setup additional pages implementation Date: Wed, 23 Feb 2022 13:12:03 +0100 Message-ID: <4379941.LvFx2qVVIh@eto.sf-tec.de> Organization: emlix GmbH In-Reply-To: <20220201150545.1512822-18-guoren@kernel.org> References: <20220201150545.1512822-1-guoren@kernel.org> <20220201150545.1512822-18-guoren@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2230114.ElGaqSPkdT"; micalg="pgp-sha256"; protocol="application/pgp-signature" Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org --nextPart2230114.ElGaqSPkdT Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" > @@ -66,35 +68,35 @@ static int vdso_mremap(const struct vm_special_mapping > *sm, return 0; > } >=20 > -static int __init __vdso_init(void) > +static int __init __vdso_init(struct __vdso_info *vdso_info) > { > unsigned int i; > struct page **vdso_pagelist; > unsigned long pfn; >=20 > - if (memcmp(vdso_info.vdso_code_start, "\177ELF", 4)) { > + if (memcmp(vdso_info->vdso_code_start, "\177ELF", 4)) { > pr_err("vDSO is not a valid ELF object!\n"); > return -EINVAL; > } >=20 Does anyone actually guarantee that this is at least this 4 bytes long? Eike =2D-=20 Rolf Eike Beer, emlix GmbH, https://www.emlix.com =46on +49 551 30664-0, Fax +49 551 30664-11 Gothaer Platz 3, 37083 G=C3=B6ttingen, Germany Sitz der Gesellschaft: G=C3=B6ttingen, Amtsgericht G=C3=B6ttingen HR B 3160 Gesch=C3=A4ftsf=C3=BChrung: Heike Jordan, Dr. Uwe Kracke =E2=80=93 Ust-IdNr= =2E: DE 205 198 055 emlix - smart embedded open source --nextPart2230114.ElGaqSPkdT Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part. Content-Transfer-Encoding: 7Bit -----BEGIN PGP SIGNATURE----- iLMEAAEIAB0WIQQ/Uctzh31xzAxFCLur5FH7Xu2t/AUCYhYkkwAKCRCr5FH7Xu2t /HZ1A/sGakdodHOoW1ysqdO2mluUIlVSczhoHppED9p5Oqf4/05LhsOcrrn6E4wn FAbLE4CKEv7FmrqmAPFnGfZbWwZ84QdgQsHHh6uZYCAuT6R1HCWRl5SY1RaO1NOW ry0P7NXzDWBNe9XTWbZgk51OxZLS3JtlUaiQaF+U03M5yVKtgw== =oRLD -----END PGP SIGNATURE----- --nextPart2230114.ElGaqSPkdT--