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 AFDD9253F1A; Mon, 23 Jun 2025 13:22:27 +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=1750684947; cv=none; b=qCa19uY33JJUtb598dLvo82sNEbmj39I+8CBqGwk60pDbw7j+KZhbYYddJJBpzOdDeXEatLXDouX7s10wtAo37ABC/grEpaNBQ7Gm1mELLMFkSRTOTBldY5GQFD2VpE/JO28jCB0lbn4i/ySBU8cBoNBz1s11IkMJ2wfeQU4ZDw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750684947; c=relaxed/simple; bh=Fd9ldUHq2fWRF9X+NPd5TP9YcEjyLgo/jHPLhCwSa0o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BHEZ5EBIiRNi1hJwQbQ+2qLZ5p0mqPNRY74mSgCCDy2LDr3Ydfo8l1v0rnd/Cdixi0rb1vunZNTBHyZYigzIT7RtHaBxGiTnQKB8qc4k6hR+GTdDHyxDm06TCV0fYoXwaZ25JTb+p/9iWBwzBbvYncsw+oSObMv022s5N9CmV6k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ISDb+6W1; 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="ISDb+6W1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 45986C4CEEA; Mon, 23 Jun 2025 13:22:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750684947; bh=Fd9ldUHq2fWRF9X+NPd5TP9YcEjyLgo/jHPLhCwSa0o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ISDb+6W1lYfmrBwb/Lx4ad562+zMjDIL2PNOEyuLlbV4ocOBANtf5BoAut/MU0L3u q4x3pj2Rd40RiQKK3XLSzFfRDZ/ytf5pNVFjVZ2T8Byc5C+Ci8VjXyX0vC/S42C7GD 9RZwrCecrDzw6NVspr4t3vRj9MyMPnrEOx5W4iZo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Khem Raj , Thomas Bogendoerfer Subject: [PATCH 6.15 167/592] mips: Add -std= flag specified in KBUILD_CFLAGS to vdso CFLAGS Date: Mon, 23 Jun 2025 15:02:05 +0200 Message-ID: <20250623130704.251450081@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250623130700.210182694@linuxfoundation.org> References: <20250623130700.210182694@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 6.15-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 @@ -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 \