From patchwork Thu Oct 13 17:52:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 2156 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:4ac7:0:0:0:0:0 with SMTP id y7csp405630wrs; Thu, 13 Oct 2022 10:58:29 -0700 (PDT) X-Google-Smtp-Source: AMsMyM7Z6MWDrZOkAX4yVR7O2rKDwg/vEuYjn84BcABghAmp/rDXmBYPzX33P9bz1xnGjAORtKa0 X-Received: by 2002:a17:906:8a6f:b0:780:96b4:d19e with SMTP id hy15-20020a1709068a6f00b0078096b4d19emr707645ejc.624.1665683909344; Thu, 13 Oct 2022 10:58:29 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1665683909; cv=none; d=google.com; s=arc-20160816; b=NRDrOGf9KWUKFA2S2P+s5dRjKapBDVE6aP3XVt6eNMC7kq7X73AoCdzo+WrKQ+cITm ZBrH1okZD0b8+fuItX/J+MdnKjYD238GQwNf2P6v/+u4AUws7B7rMLRxxypyltVIO8D2 caT67GlGJvTJQ1DOZJUju2TmxtxJPwlsQsUQS4j5y62ksPIyIQ+qsoXYV7GvTD48UH3D cjyEAfuxXSURbKGWPrjie4C7N4cK0V/y8lRIyTJ6d/osiI8FKvLSkQXnBLV8qgXQ1KCw cIeJQIbY6+WWTcSQyEFeeT32ZXsv734xwoEyuhCT3TDU38BUQHqnMDqiVef5ABzCSPJy 9erA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :user-agent:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=/mOskKEX6Jl1B0SMfVPRVyrdFQo7DMIwicR4dSZ2oW4=; b=KOC/bgolvijg0uNtwxkogTUYcl3gTxBq8hGPvsZQJYIP1DAPfq9LHt2wW6Dj0xhEQj an11FxPrTPdTg2aHve35OlONzeIwn3m1Q+iPF1ZbViswXbrrsBgd+FREg42rUNQXbs2K Cnl0DoJMsppxXYLlV4KXRbWlR5xCoa7VjcKlnc0ujCBKE1KAC8xJTCWp2+aCRtcjABWz DNjs7Y1pfQGbhvO4L7wYtfSb3sQH2FW5XJs/BoZaoSzkoEN8mbl+w7XUPJ5AwHl6hbM4 nrujm8tAQcl7DSlOzT0BxRdvMEGRRFQZsXRjyoDrb+Ek+z4aNV9rXr90WvJaraxhwW34 MJTA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=tedXHHLV; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id i5-20020a17090639c500b00781d302d5e9si291316eje.166.2022.10.13.10.58.04; Thu, 13 Oct 2022 10:58:29 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=tedXHHLV; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229613AbiJMR5N (ORCPT + 99 others); Thu, 13 Oct 2022 13:57:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54322 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229866AbiJMR4c (ORCPT ); Thu, 13 Oct 2022 13:56:32 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 37D17286DD; Thu, 13 Oct 2022 10:54:54 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7A9F46190C; Thu, 13 Oct 2022 17:54:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8C177C433D6; Thu, 13 Oct 2022 17:54:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1665683692; bh=vFcnlGFRnozb87ENcKx2BFKeuuCs1yt48HPib7rveaw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tedXHHLViPrrxSbOAbcsNyeonkNC64/wqmDIKXAD9BPpZc1PzOONAWa8IJy/czniF 5+u1+wOkFYWwMdsiqBNiYRtl+OB8Lmh/D1KFbQdujsZM4FFxPtS30OsHLmlOzVjShl vTJ0oSZtLjLoPYtm6g1yU8moPKk6XR9cuucBUOwM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Nathan Chancellor , Sami Tolvanen , Kees Cook Subject: [PATCH 5.10 06/54] Makefile.extrawarn: Move -Wcast-function-type-strict to W=1 Date: Thu, 13 Oct 2022 19:52:00 +0200 Message-Id: <20221013175147.508412511@linuxfoundation.org> X-Mailer: git-send-email 2.38.0 In-Reply-To: <20221013175147.337501757@linuxfoundation.org> References: <20221013175147.337501757@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1746596171216874046?= X-GMAIL-MSGID: =?utf-8?q?1746596171216874046?= From: Sami Tolvanen commit 2120635108b35ecad9c59c8b44f6cbdf4f98214e upstream. We enable -Wcast-function-type globally in the kernel to warn about mismatching types in function pointer casts. Compilers currently warn only about ABI incompability with this flag, but Clang 16 will enable a stricter version of the check by default that checks for an exact type match. This will be very noisy in the kernel, so disable -Wcast-function-type-strict without W=1 until the new warnings have been addressed. Cc: stable@vger.kernel.org Link: https://reviews.llvm.org/D134831 Link: https://github.com/ClangBuiltLinux/linux/issues/1724 Suggested-by: Nathan Chancellor Signed-off-by: Sami Tolvanen Signed-off-by: Kees Cook Link: https://lore.kernel.org/r/20220930203310.4010564-1-samitolvanen@google.com Signed-off-by: Greg Kroah-Hartman --- scripts/Makefile.extrawarn | 1 + 1 file changed, 1 insertion(+) --- a/scripts/Makefile.extrawarn +++ b/scripts/Makefile.extrawarn @@ -52,6 +52,7 @@ KBUILD_CFLAGS += -Wno-format-zero-length KBUILD_CFLAGS += $(call cc-disable-warning, pointer-to-enum-cast) KBUILD_CFLAGS += -Wno-tautological-constant-out-of-range-compare KBUILD_CFLAGS += $(call cc-disable-warning, unaligned-access) +KBUILD_CFLAGS += $(call cc-disable-warning, cast-function-type-strict) endif endif