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 02F0AC63797 for ; Thu, 12 Jan 2023 18:14:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230299AbjALSOX (ORCPT ); Thu, 12 Jan 2023 13:14:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55658 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232019AbjALSN1 (ORCPT ); Thu, 12 Jan 2023 13:13:27 -0500 Received: from mail-io1-xd2e.google.com (mail-io1-xd2e.google.com [IPv6:2607:f8b0:4864:20::d2e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AD0EE6CFF5 for ; Thu, 12 Jan 2023 09:42:30 -0800 (PST) Received: by mail-io1-xd2e.google.com with SMTP id n85so1768435iod.7 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=3Q4TjDTcakG5DOUqOGjYn+KJUpekeftHG9FlXoptGoW43VGityk63Bn211yMwp/k1m RB5dENrnc0JBsFi+bORvc1dKhvawrX2uMctCaTO4Sy7Vhz5txjDvwFROJKBwXOQ2TBf4 F+ojlzJIR+dwQIElo+8B5r3XInaNUh5opZ/JbzbEGbq4H8zx5vuJ708nWToQ7rncKwob 2M8OboDcOC42BOVLIIc+8ef4TYlbF9wtJYt7xkE/6K5HGCqepDFROQ4Nzcnjw02uuD0g kdue+zWgixHFty+grIav69MfcTwYcNmDGLCRB0YIfKl65VRpHDkvwgMTpoaJoXCA1c1W 1aDg== X-Gm-Message-State: AFqh2konFq0ijURHWhWKBYk34nejCgyEVgwKfMKvBt1URIzw8AD/X7N/ 6SEx9W9HAngQR42Sb8fQ6A+iqKJbSdNeLh5N X-Google-Smtp-Source: AMrXdXvk9xhzcaFoZxxmmknHJy44EbqiSOphFJECV2pokMptWalRXsAA0qmsiyW3lmBDHZEgRkUD3A== 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 Precedence: bulk List-ID: X-Mailing-List: io-uring@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