From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D74DBC4320A for ; Wed, 18 Aug 2021 08:11:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C326461029 for ; Wed, 18 Aug 2021 08:11:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240304AbhHRIMF (ORCPT ); Wed, 18 Aug 2021 04:12:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45658 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240226AbhHRIL4 (ORCPT ); Wed, 18 Aug 2021 04:11:56 -0400 Received: from mail-pg1-x52f.google.com (mail-pg1-x52f.google.com [IPv6:2607:f8b0:4864:20::52f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5851BC06179A for ; Wed, 18 Aug 2021 01:11:22 -0700 (PDT) Received: by mail-pg1-x52f.google.com with SMTP id e7so1448428pgk.2 for ; Wed, 18 Aug 2021 01:11:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=pvc8FYTWoOHIm8j1TKo43QLNqnXNJipb45HEg4CLwMg=; b=a9BG+RcP0MIEuaPYKP32XKuk9RSJoyc2XYI53zcUldllIFTpuQz0V8ZPcqT4TxEENo CZEnuMUkvNuLQPlGpy19UVBp4CfAx7fL812LJun6d7yVS7d5tEXCjKbOOpo5QOkxA7dv NvoifxAIiM0Sz8xyEwTASp0mxGVverwuuT/MU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=pvc8FYTWoOHIm8j1TKo43QLNqnXNJipb45HEg4CLwMg=; b=G7XhT4FYdePV9AsKKJyuX5RLbjGEbdxzWZIq7akigZS1AVR28lH2JbNpTlhONHzKwU V4G2mOB2OYIDFM9WBDN60giZPxVnjWOkphHJNdfcOB+F3xpyctFYEacDrH81ONVQwMsX cbsIXMa1+kzFSYxM7Rm/eWtNW0B7IZRwBAKUpKwsqUknCf3OCBvlYdXCj8aL8uEjHCXY Lo87Jqnfzxel2lxsBN36bcXLZJM50Vb3jFDgH9wr2JESJdAmt4wXq/So9j1S1X+4iW+a 9zgwDYZ2NPXhjzf7GaJnEiRLQk+WoxeMzOqWoA+EbtWLOpp2zM38S9Tc4DKPCDa+2avH elWA== X-Gm-Message-State: AOAM531sxnSwN57EnIOAoHC6mbongVRJRWWoIiyoEaHybPTvoPnNRbhe 1jAFCpNCW+UqCaPLPNEa9JkjvQ== X-Google-Smtp-Source: ABdhPJzHErneH8CMtqAbL30rQcncRCBdl39QSSdhA5ZeWpVjhOQkC2qbPMdkOdMsoUgx9CjCVAiHeg== X-Received: by 2002:a65:63c1:: with SMTP id n1mr7776085pgv.398.1629274282004; Wed, 18 Aug 2021 01:11:22 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id g202sm5103235pfb.125.2021.08.18.01.11.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Aug 2021 01:11:21 -0700 (PDT) From: Kees Cook To: linux-kernel@vger.kernel.org Cc: Kees Cook , Arnd Bergmann , Masahiro Yamada , linux-kbuild@vger.kernel.org, "Gustavo A . R . Silva" , clang-built-linux@googlegroups.com, linux-hardening@vger.kernel.org Subject: [PATCH 4/5] Makefile: Enable -Warray-bounds Date: Wed, 18 Aug 2021 01:11:17 -0700 Message-Id: <20210818081118.1667663-5-keescook@chromium.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210818081118.1667663-1-keescook@chromium.org> References: <20210818081118.1667663-1-keescook@chromium.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1092; h=from:subject; bh=rvvfb+lJ3OE28Z6jfKAAwAF5uvGem1fIeunf1UcWOFo=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBhHMCl+H7K3EfJm5a4Yz7JgDu5Hns280iVsxefcQ+8 DYYrBKuJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCYRzApQAKCRCJcvTf3G3AJsN6D/ 9zxdMqHYgAcTr5lbwMyEwEdDgo20EoKNXKWVbKTAvpHy+dG169wey8IaNWUCxoSwa3Eqia7BoaEryJ BakrEhNUmZicL6u6EX4+DcWFD26hf7OxycxvLgFeJA0+NgmWkAf+i8MSJ5Iwb8IK2rrncEAReXJDb1 XwlXCdUDD3MvZWQ5VEj/3Frw6587IkEIr6C8ADtnCHgmYYggQp4j0WTKdecXJQPbs7GiGVkS+nerB0 PwS0T/az6WYgedUMB+mS0V44sJRJDIDH2YWfVYodJFBNaSMAskgL1yFhxpOSKuD7uEpC77u/HW+WGH fpVemidphbzkgRRvYa2+7Of8TgOpQ5jWqYP7O3/1NytzggrD/z/7rNkP1x3onxH38vyGQRCOe4vgTG x9zXY78qC+S3q+XKJFsLI73dt4S98CTt16J2Te3rTbqgAF9FFrYjSOu+VGZkiGI1NPi1r+2aI1nFRa Y7ufBViMvuPBg26pVnixZUEDqCb+vElybbYeztsLSYqHoFOAm5w2btNqSHaa1rFRSUSe6qcvV/6+4l 37nyhOnWIlry/IVhBhmS713HAeSMTSdRijKkm1bRaZjHQbsA5U6dE2AKMOnOGcbsVZC9s9pnrrXcmT TOzJ9XwF/LeewP7YJMg3pwwtLOB8vCYQdW2nIrJC8HaGZTL7C5qEmJP4Fpcw== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org With the recent fixes for flexible arrays and expanded FORTIFY_SOURCE coverage, it is now possible to enable -Warray-bounds. Since both GCC and Clang include -Warray-bounds in -Wall, we just need to stop disabling it. Cc: Arnd Bergmann Cc: Masahiro Yamada Cc: linux-kbuild@vger.kernel.org Co-developed-by: Gustavo A. R. Silva Signed-off-by: Gustavo A. R. Silva Signed-off-by: Kees Cook --- Makefile | 1 - 1 file changed, 1 deletion(-) diff --git a/Makefile b/Makefile index a4aca01a4835..af22b83cede7 100644 --- a/Makefile +++ b/Makefile @@ -1072,7 +1072,6 @@ KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) # We'll want to enable this eventually, but it's not going away for 5.7 at least KBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds) -KBUILD_CFLAGS += -Wno-array-bounds KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) # Another good warning that we'll want to enable eventually -- 2.30.2