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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 20E6BC282C8 for ; Mon, 28 Jan 2019 15:46:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E749821741 for ; Mon, 28 Jan 2019 15:46:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548690419; bh=W3yDeAWvfqNnXZ8dFkrjqhzlV0WzsmJTRW7e73ONVRk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=2RaW4mo7PS+NRRg3uF/hMkUvNtN/ZTZ/D+KBIyoByWD8aS6v5KUySSrSCYGGtmud9 Tw6eRApAt9J6EemjNaNQTpclTDX3AByBmgjbFDUl/EqKG4WpoBHl1sEpc42z/bFUhW 9s2/OPbyy4/4/IkaINjwFult84XP/RBOR8/DQXVg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728163AbfA1Pq5 (ORCPT ); Mon, 28 Jan 2019 10:46:57 -0500 Received: from mail.kernel.org ([198.145.29.99]:60274 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728143AbfA1Pqy (ORCPT ); Mon, 28 Jan 2019 10:46:54 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D53F520880; Mon, 28 Jan 2019 15:46:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548690414; bh=W3yDeAWvfqNnXZ8dFkrjqhzlV0WzsmJTRW7e73ONVRk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tZweEMRwztrWiIXlIOwDCTFsCeYA2rB3wkH/2LPk8nBkei5nul3APYIGD3+iapbAs nOgQKSMjzrTcR67am0pB4drBnqpCUejXru9P+yne63bE5e5WtgJquW9y2rILlxw/CZ 0LnjrWM5wSKlWzBc8erDDZpyOIHUqNScgY51pvdw= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mathieu Malaterre , Michael Ellerman , Sasha Levin , linuxppc-dev@lists.ozlabs.org Subject: [PATCH AUTOSEL 4.20 078/304] powerpc/32: Add .data..Lubsan_data*/.data..Lubsan_type* sections explicitly Date: Mon, 28 Jan 2019 10:39:55 -0500 Message-Id: <20190128154341.47195-78-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190128154341.47195-1-sashal@kernel.org> References: <20190128154341.47195-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mathieu Malaterre [ Upstream commit beba24ac59133cb36ecd03f9af9ccb11971ee20e ] When both `CONFIG_LD_DEAD_CODE_DATA_ELIMINATION=y` and `CONFIG_UBSAN=y` are set, link step typically produce numberous warnings about orphan section: + powerpc-linux-gnu-ld -EB -m elf32ppc -Bstatic --orphan-handling=warn --build-id --gc-sections -X -o .tmp_vmlinux1 -T ./arch/powerpc/kernel/vmlinux.lds --who le-archive built-in.a --no-whole-archive --start-group lib/lib.a --end-group powerpc-linux-gnu-ld: warning: orphan section `.data..Lubsan_data393' from `init/main.o' being placed in section `.data..Lubsan_data393'. powerpc-linux-gnu-ld: warning: orphan section `.data..Lubsan_data394' from `init/main.o' being placed in section `.data..Lubsan_data394'. ... powerpc-linux-gnu-ld: warning: orphan section `.data..Lubsan_type11' from `init/main.o' being placed in section `.data..Lubsan_type11'. powerpc-linux-gnu-ld: warning: orphan section `.data..Lubsan_type12' from `init/main.o' being placed in section `.data..Lubsan_type12'. ... This commit remove those warnings produced at W=1. Link: https://www.mail-archive.com/linuxppc-dev@lists.ozlabs.org/msg135407.html Suggested-by: Nicholas Piggin Signed-off-by: Mathieu Malaterre Signed-off-by: Michael Ellerman Signed-off-by: Sasha Levin --- arch/powerpc/kernel/vmlinux.lds.S | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 434581bcd5b4..1148c3c60c3b 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -308,6 +308,10 @@ SECTIONS #ifdef CONFIG_PPC32 .data : AT(ADDR(.data) - LOAD_OFFSET) { DATA_DATA +#ifdef CONFIG_UBSAN + *(.data..Lubsan_data*) + *(.data..Lubsan_type*) +#endif *(.data.rel*) *(SDATA_MAIN) *(.sdata2) -- 2.19.1