Received: by 2002:a05:6358:a55:b0:ec:fcf4:3ecf with SMTP id 21csp726652rwb; Thu, 12 Jan 2023 11:27:18 -0800 (PST) X-Google-Smtp-Source: AMrXdXvPbJDiP3wy2hsbGLVL1B5rZo3kO+Bg26axRAjg7Wi/rD2MByqZ5b33dUnCNKydP605RwFc X-Received: by 2002:a05:6a20:4417:b0:b2:310a:9fd2 with SMTP id ce23-20020a056a20441700b000b2310a9fd2mr10804394pzb.43.1673551637892; Thu, 12 Jan 2023 11:27:17 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1673551637; cv=none; d=google.com; s=arc-20160816; b=N17p+RcxsAGWwA7/ZtWa6tsO48YGl6pAyDhki9Ft39OpM5d1sEVO/kdDsPT1/cxiew eXbbWPo/DXunaNJDAETl+XxTzldIX2ateQt3Ismo7KXIhur1L8uOjX8BDyi9LTB6jCfV TuDIxXU8NnGH0ts5JHKa5NHHScnm8TSW1dalg3tLCdA9JuSX9EBZaMZAgwp6H74qXkv6 sH8N0jvt3cH/TVqAxS8SYlp9wY3PwOgLnt+Vmov7LkkOcjQXgAkakEDsGlqA/IelZnbz SqYFhJsFLs8rouUOHZoVAndha8XXYfQtLTV3FO4UafvekKd4u0IUfwVb6Jpps1G1umEY 8Akg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:in-reply-to:from :references:to:content-language:subject:user-agent:mime-version:date :message-id:dkim-signature; bh=BvAQiiZmTGdSV6CVcDlCK72GqmZAsS7eBjqDC+1TliM=; b=a/NyKsVBJLZjTyjKyj2obnT8bge9unM0nUSxhbwgy1A4Ss2bjNtTkzbId3qfokrcHk 1oF/2DCXzr8USQU9KirwtyYNG5wXU/t79FN0degqHMLZBkQkQh34CRlIu8beTbR2mAsr z+mJN08TTHln3b4w5cHJA6aMFq4SnDoxknwK8urqvT1IoTma578w+orL4nyaQHI4DOjo WO84Pxsc9yCBjTUnPXTas46h3PMn6ZSsR4oBKx3a6aEjtEttykgTkVDm7thYedavPBpy KxHxJuYqCk3t17HvQbl7v68htieRqPtbgEoXbz+XKdt6CSdDYqEtuN94rfhiPGc32bLO yJIA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel-dk.20210112.gappssmtp.com header.s=20210112 header.b=1kE5uUJG; 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 k68-20020a636f47000000b004276c7b2253si18520120pgc.584.2023.01.12.11.27.11; Thu, 12 Jan 2023 11:27:17 -0800 (PST) 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; dkim=pass header.i=@kernel-dk.20210112.gappssmtp.com header.s=20210112 header.b=1kE5uUJG; 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 S240173AbjALSO1 (ORCPT + 50 others); Thu, 12 Jan 2023 13:14:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54628 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238535AbjALSN2 (ORCPT ); Thu, 12 Jan 2023 13:13:28 -0500 Received: from mail-io1-xd2f.google.com (mail-io1-xd2f.google.com [IPv6:2607:f8b0:4864:20::d2f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ADBCB6D504 for ; Thu, 12 Jan 2023 09:42:30 -0800 (PST) Received: by mail-io1-xd2f.google.com with SMTP id q190so9367416iod.10 for ; Thu, 12 Jan 2023 09:42:30 -0800 (PST) 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:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=BvAQiiZmTGdSV6CVcDlCK72GqmZAsS7eBjqDC+1TliM=; b=1kE5uUJGTn+m7E4k6/2BXZo4Or7BVUvHbddS+r8XEWkQJGwIRroTcLjlTCjj1JFD9m JOFBFerlwx+wENJRenYGikJyIHgowaGHbq8Iixd/LMwK7oBu975juAdzAUiCgUQQ5nZT 9x9QXnMKgIq+GuzS7zxFZAx7T40+UWdOvUYTA6yxfVpg365+DnMH7mRECMkZSm7HKGHt 2fNCp4BrIwIn/9Eo8LtfXXq1W1adSesq3A9bNKv7wAWjf8J8Ut/6t0LpYoidxw3QM7Ap ydhpB6efkmsYgJgBJU6l7n36UhbByYk6k6/VP3jpaEby6pBvZoIDuswKnhOEI/hMVfw9 Leow== 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:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=BvAQiiZmTGdSV6CVcDlCK72GqmZAsS7eBjqDC+1TliM=; b=nEbJnpjc1nwmhx/rbuZnMQEc0W9EbUoX6Y1qhme6ffoXYH+5cR9FQLu+xVaKK6nv8v ryeaiN8egZEtS9QieRP/ldKavdJnGBwmFe0vz/dQkMCpx2WsNgzpjsa0M4hnMAEvGpEQ GdEOo5MdmFXwyvfZbe4dv5TBRECZ8bj+0VBEz8uhUpAmFApe3oVgobV4GMy4+G8wv91q OcJDjo8c2DzXn/OGnuA9RHAAwjK2k5yEf8raJ0fLn86bOGOPO9fU3IWDLUKojF4oCf2Z Q3XCpxOeW0xH6W50W6RQZX5OZH2p1RNk0L5gpwsRzhJn2n054F9QySHKVAQiYGhn+8dH G2gw== X-Gm-Message-State: AFqh2koCN8MQnSPI3xu5zCpj8uPAoNNKTl2raE/NXxXy0a1mWAlDhcWX l1gMhk1/R01Sg0FN7r0+/N5hyQ== X-Received: by 2002:a6b:7702:0:b0:6e2:d3f7:3b60 with SMTP id n2-20020a6b7702000000b006e2d3f73b60mr9591641iom.2.1673545349977; Thu, 12 Jan 2023 09:42:29 -0800 (PST) Received: from [192.168.1.94] ([207.135.234.126]) by smtp.gmail.com with ESMTPSA id d18-20020a0566022d5200b006cecd92164esm6179854iow.34.2023.01.12.09.42.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 12 Jan 2023 09:42:29 -0800 (PST) Message-ID: <0b47feda-b3b2-02e8-36bc-f55a3e27bc35@kernel.dk> Date: Thu, 12 Jan 2023 10:42:28 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:102.0) Gecko/20100101 Thunderbird/102.6.0 Subject: Re: [syzbot] KASAN: use-after-free Read in io_fallback_req_func Content-Language: en-US To: syzbot , asml.silence@gmail.com, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <000000000000cf0f4905f20e504c@google.com> From: Jens Axboe In-Reply-To: <000000000000cf0f4905f20e504c@google.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,NICE_REPLY_A,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 1/12/23 3:09 AM, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 0a093b2893c7 Add linux-next specific files for 20230112 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=103269ce480000 > kernel config: https://syzkaller.appspot.com/x/.config?x=835f3591019836d5 > dashboard link: https://syzkaller.appspot.com/bug?extid=bc022c162e3b001bf607 > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > > Unfortunately, I don't have any reproducer for this issue yet. #syz test: git://git.kernel.dk/linux.git for-next -- Jens Axboe