From patchwork Wed Nov 6 16:18:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 13865178 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 38422D59F53 for ; Wed, 6 Nov 2024 16:20:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=gxN4chngxIOdDonPMYeE4ui/gLP/3h89s3+mj4mpyJI=; b=CoWvbnYNzuVkMNGZH8ScapE6Ks Al0suuu1Vah5FOhwlOatudHsOBiZ2QZP86IyLN850yVLk7MSUDsddA645CogROWZDfO3xkDgKlE/i LIaUd3mSKl0gNjeh4pnWAxm23iRxmVUxn5BWTpU/C5euG//ZSU5SAviDjXRF4U+5/syZjXc2TYRsa NKaOoXMlcmOwOMnJnYKbj8MNIUCCSWfuyJSZPZpNRVJ3WOH+U9moti+0g7tSMq8/IHVBURoFTKvmo bw9vsaq0pZaeAIwjgJvji4c3PWWF+urixUcgNbYZQe5NeHIkf9nIvFAvyzpEn70hxvbUl3gPahtvB 8g9bV+wA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t8ilq-000000040bv-3hTK; Wed, 06 Nov 2024 16:20:38 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t8ik6-000000040IP-1IET for linux-arm-kernel@lists.infradead.org; Wed, 06 Nov 2024 16:18:51 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 091255C51B8; Wed, 6 Nov 2024 16:18:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 683E1C4CECC; Wed, 6 Nov 2024 16:18:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730909929; bh=k9tWT/FSzffihY/db8sVNhdySykmh+eiRYELPcAcGv0=; h=From:To:Cc:Subject:Date:From; b=Pps9zq+WRch8jkV0Z7gLVcexSVBgAgisGb5VAGMjBVPR9d4XIzTYwn0XXZThthFJD ZTPmjf++A7zkiS74tE0BmAhNSZdTKi9TtfUg3G1s0n1s1HgMS8hbupXxMdWrn3D77v wE1wlicpwm5nOsVlnGD/incgvgWUQ5m8bmM+bmJokxARm4ByogbAPX6GerkfoPkvin VfuQcxUCywxD7H/ZquHOFrNuiECSFFfitNiQKepow96+FgAkV2pKGtIboWGx2Y0tgH umYstO4Dgv39fBaQh1t63/8VyPM4xjh/UDSTaa1vvHlZhBa+Oggj48JtlQLSCYQO2/ PlsnKQQFRbJbw== From: Masahiro Yamada To: Catalin Marinas , Will Deacon , linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) Cc: linux-kbuild@vger.kernel.org, Nicholas Piggin , Masahiro Yamada , Ingo Molnar , Kees Cook , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] arm64: fix .data.rel.ro size assertion when CONFIG_LTO_CLANG Date: Thu, 7 Nov 2024 01:18:42 +0900 Message-ID: <20241106161843.189927-1-masahiroy@kernel.org> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241106_081850_411864_86B22047 X-CRM114-Status: GOOD ( 10.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Commit be2881824ae9 ("arm64/build: Assert for unwanted sections") introduced an assertion to ensure that the .data.rel.ro section does not exist. However, this check does not work when CONFIG_LTO_CLANG is enabled, because .data.rel.ro matches the .data.[0-9a-zA-Z_]* pattern in the DATA_MAIN macro. Move the ASSERT() above the RW_DATA() line. Fixes: be2881824ae9 ("arm64/build: Assert for unwanted sections") Signed-off-by: Masahiro Yamada --- arch/arm64/kernel/vmlinux.lds.S | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S index 58d89d997d05..f84c71f04d9e 100644 --- a/arch/arm64/kernel/vmlinux.lds.S +++ b/arch/arm64/kernel/vmlinux.lds.S @@ -287,6 +287,9 @@ SECTIONS __initdata_end = .; __init_end = .; + .data.rel.ro : { *(.data.rel.ro) } + ASSERT(SIZEOF(.data.rel.ro) == 0, "Unexpected RELRO detected!") + _data = .; _sdata = .; RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_ALIGN) @@ -343,9 +346,6 @@ SECTIONS *(.plt) *(.plt.*) *(.iplt) *(.igot .igot.plt) } ASSERT(SIZEOF(.plt) == 0, "Unexpected run-time procedure linkages detected!") - - .data.rel.ro : { *(.data.rel.ro) } - ASSERT(SIZEOF(.data.rel.ro) == 0, "Unexpected RELRO detected!") } #include "image-vars.h"