Received: by 2002:a05:6a10:2726:0:0:0:0 with SMTP id ib38csp2546935pxb; Sun, 3 Apr 2022 10:47:07 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwpK+//c0eRitPyUSQ+lCgMOW+hFiUazLQEja/rXxLJUM/zkqB8BmZ2jfms6Ad6jfqCctIi X-Received: by 2002:a05:6402:354b:b0:419:4af8:c5c9 with SMTP id f11-20020a056402354b00b004194af8c5c9mr30023445edd.91.1649008026835; Sun, 03 Apr 2022 10:47:06 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1649008026; cv=none; d=google.com; s=arc-20160816; b=xeIP35jFo6M4VHOtVQ7GnL1yl8tsocM7KDMq9sptSqZhQnxULn0kBR16ro90DyeFOh W6rtcZ3wSP4V5MRmK80UptZ5qdcC8HGK6gafQAZnbOxbXF5dutXH0xDIx3V3W5LpQvjU IfnIyERXi4w/dnMFuEMAidTzOcsP9S9OUoQ9ryQajnNlio28qW19r1hjyN70rxJJ1p0G dVcjlV9g/8V6GTA0P3BaNMZuC/Qy5XPK1zb1yk1MHj/ufGLoOstXeUpHO4nR8kB/DrFf 1lvEeTf7aEt4UkUMLwCnEmZ+P6Eo4otWqF5x3lC8+6Np1FargRNaCSl5KMYLTbtAqK/e nUQg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=iRfL1v+jwSVlhiO0mdEcvvztSY5hw+RziL+dva3HEkY=; b=EjcVJC+i9glulwNyz9ADwlj5Ras8EhODi390gR45dnw1A47/cu1QEtFBU0PhingyoM GZl+ZQL6hhPzAPUjnuMOdp4WfI7Mb77enettxsGWmVlF3/0aJcTLDnM89dBOz5ciwFsI iVWRzjZ35Il7ogrKwySzJLgOfI8zx2Qr6LXcRjR7a8QaY+9dgbw+5gV/bLso4K3rAGlF f56I1VvLN6i+3hrhksZa3S4fMnom/olHt4RIvbxfkjUN5wdH/lpN3EpaWx/leQCJ6OQ3 VAuTONfMOQXhh0Q+InS6FAlVfpklHuDTs4P4dmbIXJOcqkpeWpGbMB8hOVhXD/aUtzWv TF7A== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=mit.edu Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id n16-20020a170906725000b006df76385e87si5041891ejk.807.2022.04.03.10.46.28; Sun, 03 Apr 2022 10:47:06 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-ext4-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-ext4-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=mit.edu Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236786AbiDCOzr (ORCPT + 99 others); Sun, 3 Apr 2022 10:55:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1359106AbiDCOze (ORCPT ); Sun, 3 Apr 2022 10:55:34 -0400 Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C2F77120B7; Sun, 3 Apr 2022 07:53:38 -0700 (PDT) Received: from cwcc.thunk.org (pool-108-7-220-252.bstnma.fios.verizon.net [108.7.220.252]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 233ErMd0020997 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sun, 3 Apr 2022 10:53:22 -0400 Received: by cwcc.thunk.org (Postfix, from userid 15806) id 22D9615C3E9E; Sun, 3 Apr 2022 10:53:22 -0400 (EDT) From: "Theodore Ts'o" To: adilger.kernel@dilger.ca, Ye Bin , linux-ext4@vger.kernel.org Cc: "Theodore Ts'o" , lczerner@redhat.com, linux-kernel@vger.kernel.org, jack@suse.cz Subject: Re: [PATCH -next v2] ext4: fix use-after-free in ext4_search_dir Date: Sun, 3 Apr 2022 10:53:19 -0400 Message-Id: <164899700423.964485.9819897021180386715.b4-ty@mit.edu> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20220324064816.1209985-1-yebin10@huawei.com> References: <20220324064816.1209985-1-yebin10@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE 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-ext4@vger.kernel.org On Thu, 24 Mar 2022 14:48:16 +0800, Ye Bin wrote: > We got issue as follows: > EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue > ================================================================== > BUG: KASAN: use-after-free in ext4_search_dir fs/ext4/namei.c:1394 [inline] > BUG: KASAN: use-after-free in search_dirblock fs/ext4/namei.c:1199 [inline] > BUG: KASAN: use-after-free in __ext4_find_entry+0xdca/0x1210 fs/ext4/namei.c:1553 > Read of size 1 at addr ffff8881317c3005 by task syz-executor117/2331 > > [...] Applied, thanks! [1/1] ext4: fix use-after-free in ext4_search_dir commit: 44c0286d878598b59225b95596e8a19b3516fafc Best regards, -- Theodore Ts'o