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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 35E1BC00140 for ; Mon, 15 Aug 2022 18:02:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231356AbiHOSCe (ORCPT ); Mon, 15 Aug 2022 14:02:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46738 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233187AbiHOSCT (ORCPT ); Mon, 15 Aug 2022 14:02:19 -0400 Received: from zeniv.linux.org.uk (zeniv.linux.org.uk [IPv6:2a03:a000:7:0:5054:ff:fe1c:15ff]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4709E25C43; Mon, 15 Aug 2022 11:02:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=linux.org.uk; s=zeniv-20220401; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=GcrNBmy4B7oYPvzC1iQ3x9irNnquUnomstD6AlIWDjo=; b=mbnFdPKHRrDIndSjpd0B0OjzRe GQl31o3UikiEGn6BQe9miqqX9F802O9C06p1/OSyBKP51WOUacxGnUx7z4T6ckelwcCtMvcfR8mrK 5hlTPVvydm+RDOa9tDO1fR4GyEKa0taddTbbOtN5/DLk48AvbH65vleCk4EEsitm3rRsQJ7GinDca +MVUzc6eoN087h/COD/d3Eq28QKnb/gPmfW6dDXn2WMm++zYS6VfFmA4IuYw7kJRXaJvVMKKgpTB6 hl+hfewNBspeJQSXz/fNRpARhUvZzAJWJM8RAbwMeI7f2gU4yfGTRikkZem3Jys2K6TVQXNv/BNYI +TUm5M8A==; Received: from viro by zeniv.linux.org.uk with local (Exim 4.95 #2 (Red Hat Linux)) id 1oNePm-004k5t-Qd; Mon, 15 Aug 2022 18:02:14 +0000 Date: Mon, 15 Aug 2022 19:02:14 +0100 From: Al Viro To: Jiacheng Xu <578001344xu@gmail.com> Cc: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, konishi.ryusuke@gmail.com, linux-nilfs@vger.kernel.org, security@kernel.org Subject: Re: KASAN: use-after-free in nilfs_mdt_destroy Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: Al Viro Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 15, 2022 at 10:03:21PM +0800, Jiacheng Xu wrote: > Patch: > Fix this bug by moving the assignment of inode->i_private before > security_inode_alloc. > An ad-hoc patch is proposed: > https://patchwork.kernel.org/project/linux-fsdevel/patch/20211011030956.2459172-1-mudongliangabcd@gmail.com/ ... and that looks like utter bollocks. Why does security_inode_alloc() look at ->i_private? Which LSM is involved?