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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EBABBCCD184 for ; Fri, 17 Oct 2025 08:16:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:Message-ID:In-Reply-To:Date:From:Cc:To:Subject: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:References:List-Owner; bh=lkuMebmv5OU5Z8lvh7hr6iBZCIcIzPK0H6i25m9XNA0=; b=bWiJL1KsrAaOFSfsVzZKRIA98f jAOkRNb0xkSn985Zf4oP+zSqClcC2jPrIrTe393+XL6VxvBpqlzi21LWkFlAmjW3i3AhlNmjzKNh1 ko3Lr6Ci2bDJnrgxNCG5D4Ko5ZaGafWFUnrEZsPb29WqhPBy6ODcBRhn1IQTik03H83rcc1LPPLQv XxRl/779y7rp3+8wzW83VwWYCtYuXd+d3Txx3mnNUXPxhc0pu7K5UNgR3wGPzhipDqA4sq9wQ9F3q CtAiRaA6ttoFW0NsTfh4O+E9N1JXxyU4cciu30mlZeYTxNRvsorPw5QA7iyfIWkRsOgk4O9qOBdPr ryM6JE5Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1v9fdv-000000073RN-2sWb; Fri, 17 Oct 2025 08:16:55 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1v9fdu-000000073QI-0fr7; Fri, 17 Oct 2025 08:16:54 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 75E2664291; Fri, 17 Oct 2025 08:16:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 93CBCC4CEF9; Fri, 17 Oct 2025 08:16:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1760689013; bh=3HE0ZBMa0PZJGtkmYMjLF34cd2yQm3MkuUgiszGNGco=; h=Subject:To:Cc:From:Date:In-Reply-To:From; b=wlyGG07G9XHXv61y4AxaHlvzgZZMCr/2ejhk68j4Sw2lYTEtBUyMAgelhY/g327ZQ jRXdTcoz+IvEnkPJJAj7Sy388MdI0kY1PI06Olu2peGJkXIaK6zlKSuhIKQ/WBdaUJ fnxkGxS7yrIUqk2oBoAKSegPS6bcjmjupgXdykSw= Subject: Patch "minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp()" has been added to the 5.15-stable tree To: David.Laight@ACULAB.COM,Jason@zx2c4.com,adilger.kernel@dilger.ca,agk@redhat.com,airlied@linux.ie,akpm@linux-foundation.org,amd-gfx@lists.freedesktop.org,andriy.shevchenko@linux.intel.com,anton.ivanov@cambridgegreys.com,arnd@kernel.org,axboe@kernel.dk,bp@alien8.de,clm@fb.com,coreteam@netfilter.org,dan.carpenter@linaro.org,daniel@ffwll.ch,dave.hansen@linux.intel.com,davem@davemloft.net,david.laight@aculab.com,dm-devel@redhat.com,dmitry.torokhov@gmail.com,dri-devel@lists.freedesktop.org,dsahern@kernel.org,dsterba@suse.com,dushistov@mail.ru,farbere@amazon.com,freedreno@lists.freedesktop.org,fw@strlen.de,gregkh@linuxfoundation.org,hch@infradead.org,hdegoede@redhat.com,herve.codina@bootlin.com,hpa@zytor.com,jack@suse.com,james.morse@arm.com,jdelvare@suse.com,jdike@addtoit.com,jejb@linux.ibm.com,jernej.skrabec@gmail.com,jmaloy@redhat.com,josef@toxicpanda.com,kadlec@netfilter.org,krzysztof.kozlowski@canonical.com,kuba@kernel.org,linus.walleij@linaro.org,linux-arm-kernel@lists.infradead.o rg,linux-mm@kvack.org,linux-staging@lists.linux.dev,linux-stm32@st-md-mailman.stormreply.com,linux-sunxi@lists.linux.dev,linux-um@lists.infradead.org,linux@rasmusvillemoes.dk,linux@roeck-us.net,lorenzo.stoakes@oracle.com,luc.vanoostenryck@gmail.com,luto@kernel.org,maarten.lankhorst@linux.intel.com,malattia@linux.it,martin.petersen@oracle.com,maz@kernel.org,mcoquelin.stm32@gmail.com,mgross@linux.intel.com,minchan@kernel.org,mingo@redhat.com,mjguzik@gmail.com,mripard@kernel.org,ngupta@vflare.org,pablo@netfilter.org,pedro.falcato@gmail.com,peterz@infradead.org,pmladek@suse.com,qiuxu.zhuo@intel.com,quic_akhilpo@quicinc.com,richard@nod.at,robdclark@gmail.com,rostedt@goodmis.org,rric@kernel.org,ruanjinjie@huawei.com,sakari.ailus@linux.intel.com,sashal@kernel.org,sean@poorly.run,senozhatsky@chromium.org,shuah@kernel.org,snitzer@redhat.com,tglx@linutronix.de,tipc-discussion@lists.sourceforge.net,tony.luck@intel.com,tytso@mit.edu,tzimmermann@suse.de,wens@csie.org,willy@infradead.org,x86@kern el.org,ying.xue@windriver.com,yoshfuji@linux-ipv6.org Cc: From: Date: Fri, 17 Oct 2025 10:16:20 +0200 In-Reply-To: <20251008152946.29285-17-farbere@amazon.com> Message-ID: <2025101720-geiger-startup-c538@gregkh> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit X-stable: commit X-Patchwork-Hint: ignore X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+linux-um=archiver.kernel.org@lists.infradead.org This is a note to let you know that I've just added the patch titled minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: minmax.h-use-build_bug_on_msg-for-the-lo-hi-test-in-clamp.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >From prvs=36971892a=farbere@amazon.com Wed Oct 8 17:34:59 2025 From: Eliav Farber Date: Wed, 8 Oct 2025 15:29:41 +0000 Subject: minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Cc: Arnd Bergmann , Christoph Hellwig , Dan Carpenter , "Jason A. Donenfeld" , Jens Axboe , Lorenzo Stoakes , Mateusz Guzik , "Pedro Falcato" Message-ID: <20251008152946.29285-17-farbere@amazon.com> From: David Laight [ Upstream commit a5743f32baec4728711bbc01d6ac2b33d4c67040 ] Use BUILD_BUG_ON_MSG(statically_true(ulo > uhi), ...) for the sanity check of the bounds in clamp(). Gives better error coverage and one less expansion of the arguments. Link: https://lkml.kernel.org/r/34d53778977747f19cce2abb287bb3e6@AcuMS.aculab.com Signed-off-by: David Laight Cc: Andy Shevchenko Cc: Arnd Bergmann Cc: Christoph Hellwig Cc: Dan Carpenter Cc: Jason A. Donenfeld Cc: Jens Axboe Cc: Lorenzo Stoakes Cc: Mateusz Guzik Cc: Matthew Wilcox Cc: Pedro Falcato Signed-off-by: Andrew Morton Signed-off-by: Eliav Farber Signed-off-by: Greg Kroah-Hartman --- include/linux/minmax.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/include/linux/minmax.h +++ b/include/linux/minmax.h @@ -106,8 +106,7 @@ __auto_type uval = (val); \ __auto_type ulo = (lo); \ __auto_type uhi = (hi); \ - static_assert(__builtin_choose_expr(__is_constexpr((lo) > (hi)), \ - (lo) <= (hi), true), \ + BUILD_BUG_ON_MSG(statically_true(ulo > uhi), \ "clamp() low limit " #lo " greater than high limit " #hi); \ BUILD_BUG_ON_MSG(!__types_ok3(uval, ulo, uhi), \ "clamp("#val", "#lo", "#hi") signedness error"); \ Patches currently in stable-queue which might be from farbere@amazon.com are queue-5.15/minmax-add-a-few-more-min_t-max_t-users.patch queue-5.15/minmax-improve-macro-expansion-and-type-checking.patch queue-5.15/minmax-fix-indentation-of-__cmp_once-and-__clamp_once.patch queue-5.15/minmax.h-simplify-the-variants-of-clamp.patch queue-5.15/minmax-add-in_range-macro.patch queue-5.15/minmax.h-move-all-the-clamp-definitions-after-the-min-max-ones.patch queue-5.15/minmax-don-t-use-max-in-situations-that-want-a-c-constant-expression.patch queue-5.15/minmax.h-remove-some-defines-that-are-only-expanded-once.patch queue-5.15/minmax.h-use-build_bug_on_msg-for-the-lo-hi-test-in-clamp.patch queue-5.15/minmax-simplify-min-max-clamp-implementation.patch queue-5.15/minmax-deduplicate-__unconst_integer_typeof.patch queue-5.15/minmax-simplify-and-clarify-min_t-max_t-implementation.patch queue-5.15/minmax.h-add-whitespace-around-operators-and-after-commas.patch queue-5.15/minmax-avoid-overly-complicated-constant-expressions-in-vm-code.patch queue-5.15/minmax-make-generic-min-and-max-macros-available-everywhere.patch queue-5.15/minmax-fix-up-min3-and-max3-too.patch queue-5.15/minmax.h-reduce-the-define-expansion-of-min-max-and-clamp.patch queue-5.15/minmax-introduce-min-max-_array.patch queue-5.15/minmax.h-update-some-comments.patch