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 X-Spam-Level: X-Spam-Status: No, score=-4.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 17685C433DF for ; Wed, 12 Aug 2020 20:34:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E1AA62078B for ; Wed, 12 Aug 2020 20:34:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="JJYKq7rh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726635AbgHLUeS (ORCPT ); Wed, 12 Aug 2020 16:34:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46176 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726528AbgHLUeR (ORCPT ); Wed, 12 Aug 2020 16:34:17 -0400 Received: from mail-qt1-x843.google.com (mail-qt1-x843.google.com [IPv6:2607:f8b0:4864:20::843]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8CCD8C061383; Wed, 12 Aug 2020 13:34:17 -0700 (PDT) Received: by mail-qt1-x843.google.com with SMTP id k18so2583390qtm.10; Wed, 12 Aug 2020 13:34:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:content-transfer-encoding:in-reply-to; bh=8AbcIfen2Mh3O6xshAeb42qMiceFCwU8VY+DtJghWKc=; b=JJYKq7rhGfoskc0IOYL0mQ2UgiV0NUPZnUMJqm0x4+mN+Jnr5eSGxbVsmV3va+QmiF wjNsakLNmG8Snq4Ka54NHi+FMZOfkPc/P2UAnRuTKgJxYoDYNvYxnt9ubGhb/1D4XEbF R5s86RQJgzcMqdEQLZP6mi/nb4RuLVBQmVI4891ly/7eIdpFM1zpDZkPWag8mXnTxtoy vTo5GBX5MwVspiDm8HromEAg+ZMCdOxBmSjbfjM12ucPoyMLi6Jr1WBIZ8qAoOffTuuf J8cG90cIOw+EUXScq3d98Z/wlHZasQ2HIKPuWFa0h1c1TvCj5gslLqFBv4AiKd9iNLAP uURg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to; bh=8AbcIfen2Mh3O6xshAeb42qMiceFCwU8VY+DtJghWKc=; b=tycdZcmC5Nl1nHB6OyuEARPt2aPmVtV8syu96FXmvgNm8dDnxqPJY/gP2HaCtbJpdj FwztCMlmPikaHAkgOJahfsHWdsq+g0K0irxJUzyShoQqps0xaIKHAT+9AJIOwSGimPZb fhPv6Opa6Ei7Xq0nSywy1SQVPwBia/see4R/WP6F8coMm/LqjTtQSmyIFeoGv1Poqmrp JKptOLaJqMyzI3asCsPe5VV1/UYcnQWX7P9/Yx8u4zhjE4GLx3PBMT+4CAuSSGQBaI36 k6UcC71VXnJsgwqP40S0BXwFNwrpG51zD0fhY9HvsqeINbMgwBV6AtH6x7W8hjEGx4h0 1RKw== X-Gm-Message-State: AOAM532URhEC934L5k9ZH+nJXp09bWrVht5gPoC3UCrLMFJmsVbZ5U4D 4IiSJs0xkUHgkTAczjm8L+nevLHU X-Google-Smtp-Source: ABdhPJx64TW/NqTIbSDn9AtxCM0KEpE57asspn5bN7J15aOPfo8WvWruSQ6i+zwyQrbngY2hClZEPw== X-Received: by 2002:ac8:130a:: with SMTP id e10mr1710881qtj.38.1597264456887; Wed, 12 Aug 2020 13:34:16 -0700 (PDT) Received: from eaf ([190.19.79.86]) by smtp.gmail.com with ESMTPSA id o13sm3651241qko.48.2020.08.12.13.34.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Aug 2020 13:34:16 -0700 (PDT) Date: Wed, 12 Aug 2020 17:34:10 -0300 From: Ernesto =?utf-8?Q?A=2E_Fern=C3=A1ndez?= To: Dan Carpenter Cc: Peilin Ye , Greg Kroah-Hartman , linux-fsdevel@vger.kernel.org, linux-kernel-mentees@lists.linuxfoundation.org, syzkaller-bugs@googlegroups.com, linux-kernel@vger.kernel.org Subject: Re: [Linux-kernel-mentees] [PATCH] hfs, hfsplus: Fix NULL pointer dereference in hfs_find_init() Message-ID: <20200812203410.GA6168@eaf> References: <20200812065556.869508-1-yepeilin.cs@gmail.com> <20200812070827.GA1304640@kroah.com> <20200812071306.GA869606@PWN> <20200812085904.GA16441@kadam> <20200812202420.GA5873@eaf> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20200812202420.GA5873@eaf> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 12, 2020 at 05:24:20PM -0300, Ernesto A. Fernández wrote: > If that's what the reproducer is about, I think just returning an error is > reasonable. I guess it would be better to put a check inside hfsplus_inode_read_fork(), to verify that the first extent is always in the right place and wide enough.