From patchwork Sat Mar 15 03:15:43 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kees Cook X-Patchwork-Id: 14017708 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 70DC9C35FF3 for ; Sat, 15 Mar 2025 03:16:00 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 77D35280003; Fri, 14 Mar 2025 23:15:56 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 65C86280006; Fri, 14 Mar 2025 23:15:56 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 275AD280003; Fri, 14 Mar 2025 23:15:56 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id EC708280004 for ; Fri, 14 Mar 2025 23:15:55 -0400 (EDT) Received: from smtpin27.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 65FE1141784 for ; Sat, 15 Mar 2025 03:15:56 +0000 (UTC) X-FDA: 83222321112.27.8A17C92 Received: from nyc.source.kernel.org (nyc.source.kernel.org [147.75.193.91]) by imf04.hostedemail.com (Postfix) with ESMTP id B90F440007 for ; Sat, 15 Mar 2025 03:15:54 +0000 (UTC) Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=M7sYQkql; spf=pass (imf04.hostedemail.com: domain of kees@kernel.org designates 147.75.193.91 as permitted sender) smtp.mailfrom=kees@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1742008554; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:references:dkim-signature; bh=0+ryInFIgw/VPrVM+zk4iNow/ltFrzJW+5/iqV4uges=; b=Ah3cO6St9vZW6CWVIUagv/t01AgRezguKHnToMWitIVIzxhHQlFKKFno/V4Zg6xGN5IcO2 cB3bPoHz+9o+f+UM3L7mSFeW/VgCCZ7pJa/ecEuW7CmrvFQ2R4cG/DB4+eurZghoLWmdWL ULDSxNlWjWHgyXSdg7kTYFCdrkp59vs= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=M7sYQkql; spf=pass (imf04.hostedemail.com: domain of kees@kernel.org designates 147.75.193.91 as permitted sender) smtp.mailfrom=kees@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1742008554; a=rsa-sha256; cv=none; b=0xPDD/9qaoPlaRI546xlRcRz3o1MTN7+vvHyLBqmzlvgzptoyoplaKmUTkhPZu3PH/IJcB efj2xVj2z2S/ZS8M+c450TdfBf6rW16aomsVGh2EZEYLUPAKQGWVyEYYR7kvErufteN5YH FRrd6ftaQ0v20t3ol0nbhEblbkAAi80= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 1796FA455C0; Sat, 15 Mar 2025 03:10:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 60676C4CEE5; Sat, 15 Mar 2025 03:15:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1742008553; bh=YOIQ3ZtSX2tS6vlyFTaYggtRceIaGQgB5shVVBaSPf8=; h=From:To:Cc:Subject:Date:From; b=M7sYQkqlOEiRIE4SRVqqraUu5q+cPrFuPwy686AVAmzPmEl5S1BDWcKGQwZ5aM0qE RJ58h5EbH5z8dAtCpUHHvT6EZeKfgleYAYIeGMZF1BxSEsSW4v3B1gPcEJZc298UQ+ JrEB2HeR/I5ozwCp6mJeOINNCzCa4NvDZ2M2Gl0XZM/h3FedIbBzChOpQp8LN8pQbF N8vsKOnlwMfE3fQJ90PL/qxFiE5i8snx43U/s2z0VF49BqTkfizA3i3Iu+N34x4mWW hGbrcRc6Bn8Wa2Gnt3O5xKzjHRS0zZHtrbfFsX4PzXjE96eLIPKYhyi+ASgv7CFcmE SZt1d9OedtKag== From: Kees Cook To: Vlastimil Babka Cc: Kees Cook , Miguel Ojeda , "Gustavo A. R. Silva" , Nathan Chancellor , Peter Zijlstra , Nick Desaulniers , Marco Elver , Przemek Kitszel , Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Roman Gushchin , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Bill Wendling , Justin Stitt , Jann Horn , Linus Torvalds , Greg Kroah-Hartman , Sasha Levin , Jonathan Corbet , Jakub Kicinski , Yafang Shao , Tony Ambardar , Alexander Lobakin , Jan Hendrik Farr , Alexander Potapenko , linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, llvm@lists.linux.dev Subject: [PATCH v4 0/2] slab: Introduce kmalloc_obj() and family Date: Fri, 14 Mar 2025 20:15:43 -0700 Message-Id: <20250315025852.it.568-kees@kernel.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1089; i=kees@kernel.org; h=from:subject:message-id; bh=YOIQ3ZtSX2tS6vlyFTaYggtRceIaGQgB5shVVBaSPf8=; b=owGbwMvMwCVmps19z/KJym7G02pJDOlXPjy4avtT6MtM1rKMB+/d62etWc5j7e7Gt/OX0qR7U 5/8nqOm31HKwiDGxSArpsgSZOce5+Lxtj3cfa4izBxWJpAhDFycAjCRGFlGhpuq3Z9uagj3fdLd yZz3Ii176wr+DSbrZJXvLJx1STFpATsjw8drn452fJ0aZOG8ymL71WN3OXk83kfejro6/UVp8Qq DR5wA X-Developer-Key: i=kees@kernel.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 X-Rspam-User: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: B90F440007 X-Stat-Signature: eamjgrpbnfub1a6icpu71ybqukitjy9b X-HE-Tag: 1742008554-803536 X-HE-Meta: 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 jsdsUPjg WFxn0wj9DhLrBgGkGf9b0dzWtIpaGcVAv5wP0MupOTJ5Dolz9ag/KkUDq5Z6U2M8MuH0srAGzbtyo3Govo6LLf6pZoGw+/nJjG0qHUKDoXIFH3CHzY6FFo0zDthyanrYbbvXxbKX/wOZ8gHPqiwnUzg3AqjC6kZJsqVb8pLPb4B/TcS8Ymir73qOMD53lici9CDyMopQltQphnSWKWn1Gck2cTpp/j1RDEcHrKhZtDYS4KXdOzchSifYlKNuvo1mVTcQqfysj2EJtzVFc3vo1q8FdsV3hJlA77O/rXkXcCYmBuFpdmJuREJCpbAfvgmPzttp4rA2Fds3aNCsy6hzde0t1D3O/wPP9gjy6loWYUw2FUX4= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi, Here's a refresh and update on the kmalloc_obj() API proposal. Please see patch 2 for the specific details. And note that this is obviously not v6.15 material! :) Thanks! -Kees v4: - split __flex_counter() out and add appropriate helpers - add flex array examples to commit log - add "size" details to commit log - add treewide conversion details to commit log - improve treewide Coccinelle scripting - fix documentation typos v3: https://lore.kernel.org/lkml/20240822231324.make.666-kees@kernel.org/ v2: https://lore.kernel.org/lkml/20240807235433.work.317-kees@kernel.org/ v1: https://lore.kernel.org/lkml/20240719192744.work.264-kees@kernel.org/ Kees Cook (2): compiler_types: Introduce __flex_counter() and family slab: Introduce kmalloc_obj() and family Documentation/process/deprecated.rst | 42 +++++++ include/linux/compiler_types.h | 31 +++++ include/linux/overflow.h | 36 ++++++ include/linux/slab.h | 170 +++++++++++++++++++++++++++ 4 files changed, 279 insertions(+)