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 16B6BC44501 for ; Wed, 15 Jul 2026 07:29:06 +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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Vk/Pmtw5V1S5Wy95XZKiQxPxVWpzziuE+PvkoAYgcUs=; b=IgOTEyB0g+NsKaSd0WLVwBjp2v 3gjSftqFyHrLNvCigVicVsq0KTn/y0EjJTiBerBAFjUSeVdaJMeNL/5PR+h9A335zfxUoYU56dkFx 4tduPAsqivq0RQb4aFfvGxJRPRykQVRJBk3J9Buy1aH40wbT0jAkQFjKevLKjFtKdbELy3nK1qgvt DsbT6trLuibzk/0pDvMBv/KAbNdJV+jz0M0KZGIq311hb/R1M2j96HQ+OB/HLY30WWGruUJV0xLil vH1HYNkU0dYt+nxmwWTDzcXHW6J57Noexm+6JP+ekyr7Odloa9MhywANDv6uML53fxlHnpbwlw2CW bTKLtgXQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wju39-0000000E1b2-10yc; Wed, 15 Jul 2026 07:28:59 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wju37-0000000E1ae-2BYn for linux-arm-kernel@lists.infradead.org; Wed, 15 Jul 2026 07:28:57 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 97954600BB; Wed, 15 Jul 2026 07:28:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 226311F000E9; Wed, 15 Jul 2026 07:28:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784100536; bh=Vk/Pmtw5V1S5Wy95XZKiQxPxVWpzziuE+PvkoAYgcUs=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=KCWKi30MM2OO4LbExOFY2K96V4NJnrOuSYk2LaflLMjhkhQxOtZ8oF5qHjCyMhZjy fPI9vhQ68B18TFLQc3JbwI/Bza/bFsu5vcGWnxMof6ezZ2Al6zMpJSuqppPOTYXzYT 8+D5XxspV4qS44G7arRn0036MucchjV9d63PSsiJbu1DSE6GwYB0emo7MC2q4heaGB TKK6px3LaBeex8N46xrQYxluBESDOGdkya0vb+VTMG0INmsmp1l+C1gSOSe8CTqgcr pRlVqlQ7TMusHrBvhsj2AwYxV1OOC6mM8wt75yCtk/bubtRjZK+Pe103PlnYk0FR5u LwNn3Od+F1tEg== Date: Wed, 15 Jul 2026 08:28:39 +0100 From: "Lorenzo Stoakes (ARM)" To: Dave Hansen Cc: Andrew Morton , Suren Baghdasaryan , "Liam R. Howlett" , Vlastimil Babka , Shakeel Butt , David Hildenbrand , Mike Rapoport , Michal Hocko , Uladzislau Rezki , Toshi Kani , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , Kiryl Shutsemau , Catalin Marinas , Will Deacon , Dev Jain , Ryan Roberts , David Carlier , linux-mm@kvack.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-arm-kernel@lists.infradead.org, stable@vger.kernel.org, syzbot+fd95a72470f5a44e464c@syzkaller.appspotmail.com Subject: Re: [PATCH mm-hotfixes v3 0/4] mm: fix UAF caused by race between ptdump and vmap pgtable freeing Message-ID: References: <20260714-series-vmap-race-fix-v3-0-b812eccfa0f9@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Jul 14, 2026 at 10:31:52AM -0700, Dave Hansen wrote: > On 7/14/26 10:24, Lorenzo Stoakes wrote: > > arch/arm64/include/asm/ptdump.h | 2 -- > > arch/arm64/mm/mmu.c | 43 ++++------------------------------------- > > arch/arm64/mm/ptdump.c | 11 ++--------- > > arch/x86/mm/pat/set_memory.c | 14 +++++++++++--- > > include/linux/mmap_lock.h | 1 + > > mm/pagewalk.c | 36 ++++++++++++++++++++-------------- > > mm/ptdump.c | 7 +++++++ > > mm/vmalloc.c | 41 ++++++++++++++++++++++++++++++--------- > > 8 files changed, 78 insertions(+), 77 deletions(-) > > BTW, this is super nice. It fixes a bug, makes the architectures more > consistent, and is effectively neutral on lines-of-code. > > Very cool. Thanks very much Dave, that's very kind of you to say :) Cheers, Lorenzo