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 78E61C32772 for ; Tue, 16 Aug 2022 16:57:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236492AbiHPQ5q (ORCPT ); Tue, 16 Aug 2022 12:57:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58814 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231383AbiHPQ5n (ORCPT ); Tue, 16 Aug 2022 12:57:43 -0400 Received: from mail-io1-xd33.google.com (mail-io1-xd33.google.com [IPv6:2607:f8b0:4864:20::d33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0FB9A80E89 for ; Tue, 16 Aug 2022 09:57:42 -0700 (PDT) Received: by mail-io1-xd33.google.com with SMTP id h78so3530101iof.13 for ; Tue, 16 Aug 2022 09:57:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc; bh=P7J3DKwpdJQSLzw9TsqI+Lj/vSSoU3YjZYr+/erVr98=; b=H1yQv/LVjOxKe3NI51kX91Krb9mhxyyXprm9qj+Aj0yDTp0jTFIjJrx2vcdT6Necx5 GmIy25qW/vZvoDQ4WVA+IT09gEYPPbgRE3aIaqUZXX6LKnScgOQmKXKSZ1putqjOaoYO rSVB8y/5QrJXNJd1uR8w9GdAUH8zW5MDvkrG9k6xVwFTy2lgTVQxjcIki6l6ilAyrD4r NZh2aee2THaR6oImlOFbtAjgSzBEbCrFrSyXT40QWWeaQ0ECr3LxZ3oYGchKNRZ8QCQJ xZsqtsXsuo4AfKfE9raGe2vR0RSXMX4fPEhfKocrNKRY7zu3clpX+F0FmKHDDQaJw+1A h10w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc; bh=P7J3DKwpdJQSLzw9TsqI+Lj/vSSoU3YjZYr+/erVr98=; b=j6zHJv06BMxsyQz84lKsfjwpZ/mhYYlN6B4aBOM1e4OACPfepxReBS5RjL+2DeXUP9 SPjvYrv381rsgn0A9lMrElPxeTKfpro/mnfPtIEujl/E7NJhkmhHUkcyc8W9e/uLcq6J 2k/rXJcI2K5uR59oB26Q6C6DqN6LFfcqBObJiD0KJXHP3kMBKVGFsjRkHS02MH34+Y/F zFW8QUvDhpOKWPoUaDV32gF2kTMdq5iI8LYmulFYHKdiyOburR7PHjum9YDWwqSmdDb0 obP0/Opke4vSiT9M82RgDmasNIcu4HzSQSR52B9tCyVcjnK4J4FRCL+mMyS23wBA94Lc 5NnQ== X-Gm-Message-State: ACgBeo03J4Bi/8dfwNIvzT/RsCvBBRRDKiGgmD3mZ5w+I4aF1aGUg8Aw PINiVr+jlOX+cUxcm0ua8QVDfZ0xg/LTdg== X-Google-Smtp-Source: AA6agR6uCjKt17c2fhPSjQg6NHiFFMA6kakU/SEBd+msRzj+eLPE+hbwwRRrCXyILrOCHDQww+Dr8w== X-Received: by 2002:a02:9714:0:b0:343:5c61:8409 with SMTP id x20-20020a029714000000b003435c618409mr9948266jai.277.1660669060767; Tue, 16 Aug 2022 09:57:40 -0700 (PDT) Received: from [192.168.1.172] ([207.135.234.126]) by smtp.gmail.com with ESMTPSA id g10-20020a056602072a00b0068844be44d7sm3277830iox.6.2022.08.16.09.57.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 16 Aug 2022 09:57:40 -0700 (PDT) Message-ID: <5bf54200-5b12-33b0-8bf3-0d1c6718cfba@kernel.dk> Date: Tue, 16 Aug 2022 10:57:39 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:102.0) Gecko/20100101 Thunderbird/102.1.1 Subject: Re: KASAN: null-ptr-deref Write in io_file_get_normal Content-Language: en-US To: Greg KH , Jiacheng Xu <578001344xu@gmail.com> Cc: linux-kernel@vger.kernel.org, asml.silence@gmail.co, io-uring@vger.kernel.org, security@kernel.org References: From: Jens Axboe In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 8/16/22 10:21 AM, Greg KH wrote: > On Wed, Aug 17, 2022 at 12:10:09AM +0800, Jiacheng Xu wrote: >> Hello, >> >> When using modified Syzkaller to fuzz the Linux kernel-5.15.58, the >> following crash was triggered. > > As you sent this to public lists, there's no need to also cc: > security@k.o as there's nothing we can do about this. Indeed... > Also, random syzbot submissions are best sent with a fix for them, > otherwise it might be a while before they will be looked at. Greg, can you cherrypick: commit 386e4fb6962b9f248a80f8870aea0870ca603e89 Author: Jens Axboe Date: Thu Jun 23 11:06:43 2022 -0600 io_uring: use original request task for inflight tracking into 5.15-stable? It should pick cleanly and also fix this issue. -- Jens Axboe