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 14C6AC43458 for ; Fri, 10 Jul 2026 09:13:06 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E251A6B0088; Fri, 10 Jul 2026 05:13:05 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id DD60F6B008A; Fri, 10 Jul 2026 05:13:05 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CECE66B008C; Fri, 10 Jul 2026 05:13:05 -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 B11DD6B0088 for ; Fri, 10 Jul 2026 05:13:05 -0400 (EDT) Received: from smtpin18.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 4DDDE8BBCD for ; Fri, 10 Jul 2026 09:13:05 +0000 (UTC) X-FDA: 84972302730.18.0316441 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf28.hostedemail.com (Postfix) with ESMTP id B71C7C0003 for ; Fri, 10 Jul 2026 09:13:03 +0000 (UTC) Authentication-Results: imf28.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b="Zapqd/L+"; spf=pass (imf28.hostedemail.com: domain of ljs@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=ljs@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1783674783; b=KmgNVWRAvW01RdWP1IrrdKnfANBfyPI4DSupjVFPmU2XWwH+uHiw/rh5U7fIG99hFak15C c7Yn8lwt5MDDZgRbr8P3oGNDb4WtWga7gyABorCidMvpgoqUU0O7c1ovQE+c+cTYSxE7cH ZtlRbRINxdr1kiHbjBm7XhdCAVP0QGI= ARC-Authentication-Results: i=1; imf28.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b="Zapqd/L+"; spf=pass (imf28.hostedemail.com: domain of ljs@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=ljs@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=1783674783; 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-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=u4DsWnWasA8h85Gsu5f/xy2b9ecOlCuQy+slRnVs+gQ=; b=b3YLp/N5GJ9Gi9Mu+7jesKm9Nc7fRzfofb25KBtTv7F1jtcIAhVuYFnncLmFosDXbXBNa/ pS9tFuP9S+ejPN/hg2WBqjIzlc+GEp9Z8FziN0AiR6aQ2ai2NVaT3tgsdfuywTb5kPCJ0p A9tRpJmZCppSYiw5Rwha5pJ2bUpH59s= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 8883C403F7; Fri, 10 Jul 2026 09:13:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 127BF1F000E9; Fri, 10 Jul 2026 09:12:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783674782; bh=u4DsWnWasA8h85Gsu5f/xy2b9ecOlCuQy+slRnVs+gQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=Zapqd/L+c4EJRqbtdJXls25prmMPM69KR+behI08XwP7Zvf6QZAqU7MiOzZtFHRF/ wD4iJaGNt8Adqf0+BR3WQ4gGuuKCKQPbob13gw2XF+IwWUuAJC53l5NtARu5EgnrqO 2s+OVM2YpE6+2ky0X8MAtBRzo0TLixGd+xwQf2zQCIqpcqzKd7rH17c8Hq//DpGAjK VX1oMzXzF9r/Ezcb6NoQiu5uEZXcE0v7sYESgSiNwMvQEQUnX9X/cbJYV2J6UjOOxU eKf5qxR79Cu00qV8/YxzDNqW3yviZQ4UK9uTlc9c8F0hRNVzdmRfLpn3XDSxvfvSx2 0r8QevW6jbmAA== Date: Fri, 10 Jul 2026 10:12:47 +0100 From: Lorenzo Stoakes To: David CARLIER Cc: Andrew Morton , Dev Jain , David Hildenbrand , "Liam R . Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Dave Hansen , Lu Baolu , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Ritesh Harjani , syzbot+fd95a72470f5a44e464c@syzkaller.appspotmail.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linuxppc-dev@lists.ozlabs.org Subject: Re: [PATCH v8] mm: pgtable: free kernel page tables via RCU to fix ptdump UAF Message-ID: References: <20260706203128.162335-1-devnexen@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: B71C7C0003 X-Stat-Signature: e8f16ze9rfn4sybf4j1ryigbdwj6i5ty X-HE-Tag: 1783674783-215310 X-HE-Meta: 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 t3RJ3LGE b2p74Koc47uw2wQS2PB3X/qO+U8tkZ43K8VS9E3IrtYeFaVebe/j08w+IaT3FFUw0IG1zM7fKtghCLUryJksmuwpnGAFS0mQerEvmB9EeIx5+D1GWc0W7yz5eiNetEtI/nTLTLE0kmPFIwRONRIvis7oKLEOY1wCAfG7EWkyQILCFh8hsqxjXcINiVVolVWCFnR39rePuxbl9XthyTr7lBkOzKE3ga7zoV/vpqVyl1PEKtQURD/wQN246z17dDZbZmYCRptYp+CO9MGZGbXEPwBRoH2I39/9FMcmd32Woy4606D9eHC5vcuth/B8mqLfTS2xcNdY1fWHT6JJktjP+BaLIrqNOipfU6jnxOQBv4GQYfbaM4gZGahJ1Qqn7u4eviu3mS6JbNHdLvKT+pWhyb6A8YrrtvFKwcrOz Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Jul 07, 2026 at 06:08:49PM +0100, David CARLIER wrote: > Sure thing :) > > On Tue, 7 Jul 2026 at 16:19, Lorenzo Stoakes wrote: > > > > Hi David C, > > > > This has been through a lot of revisions so I think for the sake of expediency > > the best solution here is for me to grab this and fiddle with it a bit then post > > it out myself. > > > > TO BE VERY CLEAR - I will keep your authorship and attribution :), and simply > > stick my name on a Co-developed-by tag. > > > > So this will remain your patch. Apologies, but the approach I'm taking is very significantly different so it would be problematic in terms of patch provenance to do this :( I will make sure to credit you directly in the commit message so there is proper attribution, this patch and follow up stuff has grown a lot (been working on it all of yesterday afternoon/evening + this morning) and need to ensure the stable stuff is backported etc. Thanks for your contributions here, very much appreciated, and sorry to have messed you about on this! Cheers, Lorenzo