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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 CEC5CC43381 for ; Sun, 10 Jan 2021 11:56:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9FC342395A for ; Sun, 10 Jan 2021 11:56:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726607AbhAJL45 (ORCPT ); Sun, 10 Jan 2021 06:56:57 -0500 Received: from mail-40131.protonmail.ch ([185.70.40.131]:52591 "EHLO mail-40131.protonmail.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726254AbhAJL4z (ORCPT ); Sun, 10 Jan 2021 06:56:55 -0500 Date: Sun, 10 Jan 2021 11:56:08 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pm.me; s=protonmail; t=1610279773; bh=MxtmeMzoZosf2A+5OO/KqkqqfNrpxRLfY3mE8BM76lQ=; h=Date:To:From:Cc:Reply-To:Subject:In-Reply-To:References:From; b=JZj3U2JaMwR6aIb+WJNixdldVJL+Sv39Cg7zlScN1lcrDdhgLwr1j1U2izIIllaGq myziSQIz+n/t3F5fE6BhvLoGmdhdklFvf5QllTupqf//cw1D2EQcktUtFaKc5tsVe8 zr4KO+0q0Ao9RTUUqJ3YPsNu6klprCJxSsxyTIXPInaXkeuXpSH+21g4GOSEH17170 M2H3ax30J9U4jtk2/+bfVHbS8uA1Hl1M80fkLdmMv6fXgdnB/k1l9eml8EI8fwNZvM J+Gi5qzKU6R2CwysDgqu4EmsC7Qrb89FW7D+YElgvAqR6F4N9jky+JQ+Z5450u0xjR Movfwmvgv1y+A== To: Thomas Bogendoerfer From: Alexander Lobakin Cc: Arnd Bergmann , Nathan Chancellor , Nick Desaulniers , Huacai Chen , Pei Huang , Kees Cook , Alexander Lobakin , Fangrui Song , Jiaxun Yang , Ralf Baechle , Corey Minyard , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, stable@vger.kernel.org, clang-built-linux@googlegroups.com Reply-To: Alexander Lobakin Subject: [PATCH v5 mips-next 1/9] MIPS: vmlinux.lds.S: add missing PAGE_ALIGNED_DATA() section Message-ID: <20210110115546.30970-1-alobakin@pm.me> In-Reply-To: <20210110115245.30762-1-alobakin@pm.me> References: <20210110115245.30762-1-alobakin@pm.me> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org MIPS uses its own declaration of rwdata, and thus it should be kept in sync with the asm-generic one. Currently PAGE_ALIGNED_DATA() is missing from the linker script, which emits the following ld warnings: mips-alpine-linux-musl-ld: warning: orphan section `.data..page_aligned' from `arch/mips/kernel/vdso.o' being placed in section `.data..page_aligned' mips-alpine-linux-musl-ld: warning: orphan section `.data..page_aligned' from `arch/mips/vdso/vdso-image.o' being placed in section `.data..page_aligned' Add the necessary declaration, so the mentioned structures will be placed in vmlinux as intended: ffffffff80630580 D __end_once ffffffff80630580 D __start___dyndbg ffffffff80630580 D __start_once ffffffff80630580 D __stop___dyndbg ffffffff80634000 d mips_vdso_data ffffffff80638000 d vdso_data ffffffff80638580 D _gp ffffffff8063c000 T __init_begin ffffffff8063c000 D _edata ffffffff8063c000 T _sinittext -> ffffffff805a4000 D __end_init_task ffffffff805a4000 D __nosave_begin ffffffff805a4000 D __nosave_end ffffffff805a4000 d mips_vdso_data ffffffff805a8000 d vdso_data ffffffff805ac000 D mmlist_lock ffffffff805ac080 D tasklist_lock Fixes: ebb5e78cc634 ("MIPS: Initial implementation of a VDSO") Cc: stable@vger.kernel.org # 4.4+ Signed-off-by: Alexander Lobakin Reviewed-by: Kees Cook Reviewed-by: Nathan Chancellor --- arch/mips/kernel/vmlinux.lds.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.= S index 5e97e9d02f98..83e27a181206 100644 --- a/arch/mips/kernel/vmlinux.lds.S +++ b/arch/mips/kernel/vmlinux.lds.S @@ -90,6 +90,7 @@ SECTIONS =20 =09=09INIT_TASK_DATA(THREAD_SIZE) =09=09NOSAVE_DATA +=09=09PAGE_ALIGNED_DATA(PAGE_SIZE) =09=09CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT) =09=09READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT) =09=09DATA_DATA --=20 2.30.0