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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 72E43103E160 for ; Wed, 18 Mar 2026 10:58:47 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id DA4966B0170; Wed, 18 Mar 2026 06:58:46 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D7BE06B0172; Wed, 18 Mar 2026 06:58:46 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C91FC6B0173; Wed, 18 Mar 2026 06:58:46 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id B90346B0170 for ; Wed, 18 Mar 2026 06:58:46 -0400 (EDT) Received: from smtpin11.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 5933C1A0652 for ; Wed, 18 Mar 2026 10:58:46 +0000 (UTC) X-FDA: 84558885852.11.68CA833 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf01.hostedemail.com (Postfix) with ESMTP id 50B894000A for ; Wed, 18 Mar 2026 10:58:44 +0000 (UTC) Authentication-Results: imf01.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=eKiMcZ85; spf=pass (imf01.hostedemail.com: domain of rppt@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=rppt@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=1773831524; 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=YpWbdmy2u35pquIoQDOkSYbA2SDw10dr75CUG2SUk9Y=; b=K9oq1GAYnx+5tCao1v0smuRNBKFPlyvIwTfa1U9jBKld1ZvSvA1sqaZLU5aCwH0z4TAehD U+wF82VQ0PRq0MfXuBZuiLX5l8LEi2U/l5Y6FEn9d8v7znNjjA0AvsOtWKnHYd5Da68hFn EPhYXb0Qx84r5FEy5IYj9GgIkRr86r0= ARC-Authentication-Results: i=1; imf01.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=eKiMcZ85; spf=pass (imf01.hostedemail.com: domain of rppt@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=rppt@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1773831524; a=rsa-sha256; cv=none; b=Oa3W9hMzeZUt5QPv87RQFwk3+VpXBi7zxRsPZ4I/qafJMVWrkYNqRy3DaJg3Cevh1WYZyG yX1rrK0BhiNeSLe/TmBkuzdkwZ5DnBxYYEnq2T9hl6UBH+UaKo4DLtJAjEHxw/pviF9/Gk fiM36VQHPgLf9V5m4mNuL14Cqahu/7o= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id AC42B4474A; Wed, 18 Mar 2026 10:58:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 65881C19421; Wed, 18 Mar 2026 10:58:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773831521; bh=kLYySycm4Q+kO2x2jmLEs+z7oAnQtdjmqDIbHrWcbjw=; h=From:To:Cc:Subject:Date:From; b=eKiMcZ85WLFC8bXWA/cKx5AD46CSeZMTj7t+7hTK626aenEZLjVU/M1bTaE/8BRRS X6S1Y6bTAssMWXPL91D/crg1FtPFmAE77lAntj2Q7m/PYz0wUHGJzu4AZOtr5VKYhD O9x+2NB3x0e+Qee3RPqpqmkTck/x41t2dPoDUPGIkmdpXAuih590JlibeZmTDiQlQj +q9tqVFXNLT50Bo4J93EDhzKNN36MtH2iOtNw1iebPTvJL5rSLJyP/H3K7GSINY4cU Jl739DvgI4xC+TxFvGCyIhqDj4Pg7a/bTjrprZ63VJjVDKtRWfpfjBV+NYDfdH+Dsr 4yKWpa/0srIqQ== From: Mike Rapoport To: Andrew Morton Cc: Alexander Potapenko , Alexander Viro , Andreas Larsson , Ard Biesheuvel , Borislav Petkov , Brendan Jackman , "Christophe Leroy (CS GROUP)" , Catalin Marinas , Christian Brauner , "David S. Miller" , Dave Hansen , David Hildenbrand , Dmitry Vyukov , Ilias Apalodimas , Ingo Molnar , Jan Kara , Johannes Weiner , "Liam R. Howlett" , Lorenzo Stoakes , Madhavan Srinivasan , Marco Elver , Marek Szyprowski , Masami Hiramatsu , Michael Ellerman , Michal Hocko , Mike Rapoport , Nicholas Piggin , "H. Peter Anvin" , Rob Herring , Robin Murphy , Saravana Kannan , Suren Baghdasaryan , Thomas Gleixner , Vlastimil Babka , Will Deacon , Zi Yan , devicetree@vger.kernel.org, iommu@lists.linux.dev, kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-efi@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, x86@kernel.org Subject: [PATCH 0/8] memblock: improve late freeing of reserved memory Date: Wed, 18 Mar 2026 12:58:19 +0200 Message-ID: <20260318105827.1358927-1-rppt@kernel.org> X-Mailer: git-send-email 2.51.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 50B894000A X-Stat-Signature: 44otscdscef7uok9jyo3b5san6yqc7ms X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1773831524-434412 X-HE-Meta: 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 t8ssZjRU FvPOja4BB+RWsPlcyfC8wgd4bcvV5yFZ2YQyag/f6QhWvTIBP36rlOTmk+amp1uC42Z/MNY0mubMa7/wAOSjYADwqSQ6fGyUYtqZJGQztSv/BJcEvxt9eh1ixSRDTQN0mRzexVWGXJ5kQXyoj8tXI4tyFj+hBodxuWO/cFwv+TdPTrHValAkmUMNaLBAAag6Xkdu4XWQyDkl6EyRBut3D9mFySXB7JQo7/qP4+h3IIPqzM1oihMyZ1SVmr0oISouDr35sDE5FOnAPqcyZOGPXrX6Q0fW8EvMnuK4d Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: "Mike Rapoport (Microsoft)" Hi, Following a recent discussion about leaks in x86 EFI [1], I audited usage of memblock_free_late() and free_reserved_area() and made some imporovements how we handle late freeing of the memory allocated with memblock. [1] https://lore.kernel.org/all/ec2aaef14783869b3be6e3c253b2dcbf67dbc12a.camel@kernel.crashing.org/ Mike Rapoport (Microsoft) (8): powerpc: fadump: pair alloc_pages_exact() with free_pages_exact() powerpc: opal-core: pair alloc_pages_exact() with free_pages_exact() mm: move free_reserved_area() to mm/memblock.c memblock: make free_reserved_area() more robust memblock: extract page freeing from free_reserved_area() into a helper memblock: make free_reserved_area() update memblock if ARCH_KEEP_MEMBLOCK=y memblock, treewide: make memblock_free() handle late freeing memblock: warn when freeing reserved memory before memory map is initialized arch/arm64/mm/init.c | 3 - arch/powerpc/kernel/fadump.c | 16 +-- arch/powerpc/platforms/powernv/opal-core.c | 9 +- arch/sparc/kernel/mdesc.c | 4 +- arch/x86/kernel/setup.c | 2 +- arch/x86/platform/efi/memmap.c | 5 +- arch/x86/platform/efi/quirks.c | 2 +- drivers/firmware/efi/apple-properties.c | 2 +- drivers/of/kexec.c | 2 +- include/linux/memblock.h | 2 - init/initramfs.c | 7 -- kernel/dma/swiotlb.c | 6 +- lib/bootconfig.c | 2 +- mm/internal.h | 10 ++ mm/kfence/core.c | 4 +- mm/memblock.c | 110 ++++++++++++++------- mm/page_alloc.c | 46 --------- 17 files changed, 102 insertions(+), 130 deletions(-) base-commit: 1f318b96cc84d7c2ab792fcc0bfd42a7ca890681 -- 2.51.0