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: 13865179 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D5B6F1E04AC; Wed, 6 Nov 2024 16:18:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730909929; cv=none; b=QCKG8wsyLpEwDKXXzPpSX5UUXE32Njb5yYGCBn+sVhMj5IcQHsprKH+eeEDFV4dqCOPgrwN8J1avUHhTC334ecFkczSDjjEylkk7cblJ6fVMqsVP3SgV3xfKwJv+VENhfxU3e3alMwx78OlaM3d7Eiyd4vntSRTRs6N8nZ4A7vo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730909929; c=relaxed/simple; bh=k9tWT/FSzffihY/db8sVNhdySykmh+eiRYELPcAcGv0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=L5K4XH4QLcbp2z2WK7H6pGHSY0PUmDpUuHXzeD5QGy4by34/johI4ovSBHrcuv5odn5X+XTyggugS1mTYpC4frTfyNQwvkVGnxY6550CRXzzHGTD//W+AmZhKDpQrzbO8zHUS/Wg5EjFUARGOyUMoavHB7ya/pOl1GoVW8XzR3w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Pps9zq+W; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Pps9zq+W" 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 Precedence: bulk X-Mailing-List: linux-kbuild@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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"