From mboxrd@z Thu Jan 1 00:00:00 1970 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 F23FA19049B; Mon, 23 Jun 2025 21:49:41 +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=1750715382; cv=none; b=FEosDwfEPhiVq5dlQxVFtTi3VFLHVrZvH0AfMbwhxiecctD9IbXIsNO9ryAMZeRUUCDcwEEW9p6UK5R7rI+dgRrr/xqPr6TIuHsTGYyJ6EPkTokw5AtDSGM6rHp3TfpVYuiZyxZZC3sHRr/F3Qdhb5k4TOTgCveUhJL+KjQKyvM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750715382; c=relaxed/simple; bh=kBEu2ene663bIia8g9i0U3PAun9uspMcdEuO8aS8LJ4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=alEPfq0rEJtiYSMqxXhsUe/IKbdNsiTiw/vabLsU63ILJvhj9IRxRKmSb3Cq2JWFZUlffc+8i+hb3zwrLHGpU5yWx6IegEmGK/7aDYJBDcUqqj9O7LSTHtF2alddHYecM36n+fqIh+bLzSuf6hgftD0gS7zPyvqcZP7SL2fNV7U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=SIMAXigJ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="SIMAXigJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1EF81C4CEEA; Mon, 23 Jun 2025 21:49:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750715381; bh=kBEu2ene663bIia8g9i0U3PAun9uspMcdEuO8aS8LJ4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SIMAXigJTUFbHwqessQuef45g2x8+RVe5Dyoj46HwYMc3sHnNUn+kh+PVqM/B73RE +dmnNOND+7OkwiAlFjgjMpoWraPwCblqYsoX3aw3UPyKIm9r3f6ny+XWs/6/YTO4Qm Lt9hqEIjFq3nSU20fleakT/fR8Yeu4du9PLtzWFk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Khem Raj , Thomas Bogendoerfer Subject: [PATCH 5.15 249/411] mips: Add -std= flag specified in KBUILD_CFLAGS to vdso CFLAGS Date: Mon, 23 Jun 2025 15:06:33 +0200 Message-ID: <20250623130639.918517839@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250623130632.993849527@linuxfoundation.org> References: <20250623130632.993849527@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Khem Raj commit 0f4ae7c6ecb89bfda026d210dcf8216fb67d2333 upstream. GCC 15 changed the default C standard dialect from gnu17 to gnu23, which should not have impacted the kernel because it explicitly requests the gnu11 standard in the main Makefile. However, mips/vdso code uses its own CFLAGS without a '-std=' value, which break with this dialect change because of the kernel's own definitions of bool, false, and true conflicting with the C23 reserved keywords. include/linux/stddef.h:11:9: error: cannot use keyword 'false' as enumeration constant 11 | false = 0, | ^~~~~ include/linux/stddef.h:11:9: note: 'false' is a keyword with '-std=c23' onwards include/linux/types.h:35:33: error: 'bool' cannot be defined via 'typedef' 35 | typedef _Bool bool; | ^~~~ include/linux/types.h:35:33: note: 'bool' is a keyword with '-std=c23' onwards Add -std as specified in KBUILD_CFLAGS to the decompressor and purgatory CFLAGS to eliminate these errors and make the C standard version of these areas match the rest of the kernel. Signed-off-by: Khem Raj Cc: stable@vger.kernel.org Signed-off-by: Thomas Bogendoerfer Signed-off-by: Greg Kroah-Hartman --- arch/mips/vdso/Makefile | 1 + 1 file changed, 1 insertion(+) --- a/arch/mips/vdso/Makefile +++ b/arch/mips/vdso/Makefile @@ -29,6 +29,7 @@ endif # offsets. cflags-vdso := $(ccflags-vdso) \ $(filter -W%,$(filter-out -Wa$(comma)%,$(KBUILD_CFLAGS))) \ + $(filter -std=%,$(KBUILD_CFLAGS)) \ -O3 -g -fPIC -fno-strict-aliasing -fno-common -fno-builtin -G 0 \ -mrelax-pic-calls $(call cc-option, -mexplicit-relocs) \ -fno-stack-protector -fno-jump-tables -DDISABLE_BRANCH_PROFILING \