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]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2D886C433F5 for ; Tue, 15 Feb 2022 20:51:51 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B029A6B0078; Tue, 15 Feb 2022 15:51:50 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id A8AEA6B007B; Tue, 15 Feb 2022 15:51:50 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 92BB76B007D; Tue, 15 Feb 2022 15:51:50 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0005.hostedemail.com [216.40.44.5]) by kanga.kvack.org (Postfix) with ESMTP id 7FB936B0078 for ; Tue, 15 Feb 2022 15:51:50 -0500 (EST) Received: from smtpin31.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 37234180B2C22 for ; Tue, 15 Feb 2022 20:51:50 +0000 (UTC) X-FDA: 79146210780.31.8D4FE5F Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf26.hostedemail.com (Postfix) with ESMTP id BEE23140002 for ; Tue, 15 Feb 2022 20:51:49 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id EF891618BB; Tue, 15 Feb 2022 20:51:48 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7019DC340EB; Tue, 15 Feb 2022 20:51:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1644958308; bh=ZoE56QlMMe/6GAt9NiJ/uuDXXAUUGedCStQmJCH2WH8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=L5e3ipJCut32WVwDvYHOj85u2VIM/iPDLLfEyVf2aZ+by0q6eYKZK4/cW+DCnAZ4s oEZtdgitFMRKO1C1EDFfiO27KkRUT8KS9F7OqvY2OjD9HG6HLmC9SQBGfgcL6bfqzg j0J4h2LSWT56Oftvyscj3Rt7sfjwn/vWfKp3nO10= Date: Tue, 15 Feb 2022 12:51:46 -0800 From: Andrew Morton To: Suren Baghdasaryan Cc: Michal Hocko , Michal Hocko , Yang Shi , David Rientjes , Matthew Wilcox , Johannes Weiner , Roman Gushchin , Rik van Riel , Minchan Kim , "Kirill A. Shutemov" , Andrea Arcangeli , Christian Brauner , Christian Brauner , Christoph Hellwig , Oleg Nesterov , David Hildenbrand , Jann Horn , Shakeel Butt , Andy Lutomirski , Christian Brauner , Florian Weimer , Jan Engelhardt , Tim Murray , linux-mm , LKML , kernel-team , syzbot Subject: Re: [PATCH 1/1] mm: fix use-after-free bug when mm->mmap is reused after being freed Message-Id: <20220215125146.64b5604bd024058c97659fa7@linux-foundation.org> In-Reply-To: References: <20220215201922.1908156-1-surenb@google.com> <20220215123741.8e757b337e1f2d32a1766d42@linux-foundation.org> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Authentication-Results: imf26.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=L5e3ipJC; spf=pass (imf26.hostedemail.com: domain of akpm@linux-foundation.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none X-Rspamd-Server: rspam07 X-Rspam-User: X-Rspamd-Queue-Id: BEE23140002 X-Stat-Signature: fdce7hqdohwfqspdmqju8fjcd99a4t8b X-HE-Tag: 1644958309-476641 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: On Tue, 15 Feb 2022 12:46:57 -0800 Suren Baghdasaryan wrote: > > Fixes: 64591e8605d6 ("mm: protect free_pgtables with mmap_lock write > > lock in exit_mmap") > > Andrew, do you want me to post another version with Fixes: > 64591e8605d6 ("mm: protect free_pgtables with mmap_lock write lock in > exit_mmap") added or you can add it directly? I added it, thanks.