Received: by 2002:a05:6359:6284:b0:131:369:b2a3 with SMTP id se4csp861957rwb; Sat, 5 Aug 2023 02:34:56 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFyZ1MmTuqS7JGto8jNf7ellHoedhLapBW1OdmhDg4qhkI98Z0mIAHR/qpC8gkHD7b46Lvi X-Received: by 2002:a25:ab07:0:b0:d11:dba3:3f9c with SMTP id u7-20020a25ab07000000b00d11dba33f9cmr4251023ybi.51.1691228096113; Sat, 05 Aug 2023 02:34:56 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1691228096; cv=none; d=google.com; s=arc-20160816; b=U2S8q/QPnxQKScJYp/a4OZx//nvnAPK2KKZOyMIHS2OkuESVofVcT9uiT7BLm0M4is UP7WrDsp0NwZBArXeCbSqcxfXeKlXLwAfP296SyQPANMn/ylgCNYrMvMBnFWJlwU3HiO RdWMj9fKBFvKdnbrNn+QR4041v4QlrXBR/onB8aARGXDv39y0hij2Xuhfx3KTbtLwX6u eXoa4E3rdUbJadSaBbT8VHUqqijNABa8R/NF8F1hyPYaf8NcSrzs8dG0uiJHoItzDfWA KTLgMZMQSyZlsB/5aVjcGJm6j6MzfKt0uEfSP6t7FawhnfxZZ4QbavuHHrApVkYul96a dGBA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=adnVBtD/WS46kZ+budh/ioactx5fkyalFsWcsbm8Tak=; fh=d0FF7aBQvg3n9Njxj4/IFfEX32MJ0Kucm6pBPNhB3ng=; b=lBeCpaR/9b7DNBH6MM8HaRwoi1ymg+hi8t9vikCV2IFYO7op10eYbYL+uMBI0D51K6 OXtcf5Ghc8PnN4EUNnv8FQFq4vkKnoeHu2aeoquHNdf99Gm4e4/4aNb+fFwSKDxYf1WM 30dT0TdzInZUaxGscRHdprFTuI5oRcWA2DNJGDaJPh8JD+4J4NHKHZujZqhaLAmJg7Jb CaqAl2ktPByAiij7NdUyJC6CYRnp8yrTNROoQo8TJnQoypTFvl2E1eeRyTg76yrRXGwV jBOzqfyN4shgXL4/4UWItvzD1FmYZbVNHb5ZBOcqiMJiA5QNmRbUblQTEgg6SahmaStu yllw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id jj19-20020a170903049300b001bbaaf979a4si2789273plb.360.2023.08.05.02.34.43; Sat, 05 Aug 2023 02:34:56 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229640AbjHEItB (ORCPT + 99 others); Sat, 5 Aug 2023 04:49:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60012 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229483AbjHEItA (ORCPT ); Sat, 5 Aug 2023 04:49:00 -0400 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 56B6B4496; Sat, 5 Aug 2023 01:48:59 -0700 (PDT) Received: by verein.lst.de (Postfix, from userid 2407) id 4F83868AA6; Sat, 5 Aug 2023 10:48:55 +0200 (CEST) Date: Sat, 5 Aug 2023 10:48:55 +0200 From: Christoph Hellwig To: Hillf Danton Cc: Christian Brauner , Christoph Hellwig , syzbot , jack@suse.cz, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Subject: Re: [syzbot] [fs?] KASAN: slab-use-after-free Read in test_bdev_super_fc Message-ID: <20230805084855.GA30135@lst.de> References: <00000000000058d58e06020c1cab@google.com> <20230804101408.GA23274@lst.de> <20230804-abstieg-behilflich-eda2ce9c2c0f@brauner> <20230804140201.GA27600@lst.de> <20230804-allheilmittel-teleobjektiv-a0351a653d31@brauner> <20230804144343.GA28230@lst.de> <20230804-kurvigen-uninteressant-09d451db7458@brauner> <20230805084316.1699-1-hdanton@sina.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230805084316.1699-1-hdanton@sina.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_NONE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Aug 05, 2023 at 04:43:16PM +0800, Hillf Danton wrote: > Feel free to take a look at the approach [1] to the uaf. > > [1] https://yhbt.net/lore/lkml/000000000000b08a42060221da36@google.com/ This doesn't make any sense whatsover.