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 ACCBE1EE7C6; Mon, 23 Jun 2025 21:39:44 +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=1750714784; cv=none; b=WP5ArU85/mBzflRVYzvRVvvDZy9whptI1RtLgH6pUmv++BHHio2M9eUyGHllDOYIKS10eFRqlpDF5nzmOQrAWWSibzpyPtyIeECZQdp1T2TWdjT6NqcdX4Kg41fEpebK+pL6MifU94E1uSV6bww/uHjnvf2B3cZcftEvx78Lo2k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750714784; c=relaxed/simple; bh=7UwPdoB1KqsK03/r9ouVIoJVkRZfcbduaAsdGXBls/A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UdtGiS1dxHQ+D50YEueskxGCS9rwi7m1py4TCRfh2du3xs1NRaVDgvI0FSvisAJUswMyLoNKxdms8N5M5Z5VR1GG5eRa+4/gln8kZm3Ybkn8NDbG7mrXrVGDXWZa9KXuWO1pnQwSusUXR+sUg4GXSMt+rXdgfffPCAheuvbh00U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=nCRttMS+; 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="nCRttMS+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4486AC4CEEA; Mon, 23 Jun 2025 21:39:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750714784; bh=7UwPdoB1KqsK03/r9ouVIoJVkRZfcbduaAsdGXBls/A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nCRttMS+e3Uqw4GHimwSI51gdJHaIN+xvuNBoLlIJIV3H1yfuu+OzNN0EzloXYmJY awumrND3r4B/uCop4k3rCIhm385GSMvZ5iFIkE3V1B3iLzRABfT5gPTu5I1sHR37tj OEQhiRP+tMxr5L2Zckjdu/egwdvNluuMhrfOcgzE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Khem Raj , Thomas Bogendoerfer Subject: [PATCH 6.12 137/414] mips: Add -std= flag specified in KBUILD_CFLAGS to vdso CFLAGS Date: Mon, 23 Jun 2025 15:04:34 +0200 Message-ID: <20250623130645.479384050@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250623130642.015559452@linuxfoundation.org> References: <20250623130642.015559452@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 6.12-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 @@ -27,6 +27,7 @@ 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 \