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 26064C54EBE for ; Thu, 12 Jan 2023 18:14:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231510AbjALSO0 (ORCPT ); Thu, 12 Jan 2023 13:14:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54208 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231146AbjALSNH (ORCPT ); Thu, 12 Jan 2023 13:13:07 -0500 Received: from mail-il1-x129.google.com (mail-il1-x129.google.com [IPv6:2607:f8b0:4864:20::129]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 926BF13F11 for ; Thu, 12 Jan 2023 09:42:13 -0800 (PST) Received: by mail-il1-x129.google.com with SMTP id x6so5078316ill.10 for ; Thu, 12 Jan 2023 09:42:13 -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=ic525rXDlsIcYaYZrzF97zBUlA+fwY1XOx9tK8OUiXE=; b=6pwo3MIKdkn3mwpS+FdO56+9VLFENdNpbZSXeXh5IIu2O/vycKPIDZVkN2SBTsMXh0 VCBJmpgbH7aWgl17CDf0SeE13lQ5YOq6mDz88ZPM5TN5B59iwjUwDGHIaBj4c6HR+7Rf rDZIjY2W5uP/zoaLVQRhJwMbEUQ631s/vZOcw39dbZ+wjnAJG57+2weWAC8RqwHlK94T ed8vmoKReMdZE43b+wdzLvzJySRYHFklc27ydmHvnIbfN+HCbnCOgDfBTc7QPfvAF8kn 4bt3YgKdf0mjYPOCbVlsUZd/7A+oEVeV0BO4T7uL7AsLZlDNJHbkbgIzK/Uh63Z/2+D6 k8UA== 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=ic525rXDlsIcYaYZrzF97zBUlA+fwY1XOx9tK8OUiXE=; b=rZGKTTvF9pLVariCIVsiaJv8ZSpxdj0qJdvNoccDhGnKO8HkFbMrWfMNXPJANY0Bfw oquJmURToedX1tE1+VNNXoq1uL1L3qlzCH7iEq0jFha4rAs6gMEhlWnw9q5qljo19LUU 9U0vzJngfniXun8YbNljoiJrYBytiG+scAIFXKM3wfn9Mf4fzKIBTNpUtPUOjVe2SlX1 bN9U29RFcmxgV2Bjpiw50v0zc1jHP+ng4JhKlDfNeylNN9RimzC5oEEEDANkHAnXIUrQ YHxQjevjludiz6orA0ReOaHvUA1wcm8TPoqqpaLmjfs3nj1BPrrl3dDqtfo1zFIrV7oY Dl9g== X-Gm-Message-State: AFqh2kpInG8eVJ/XjkGt29vs2qUyNXmJRb7QESnSGSRgaUi3V3f66OCa rS7vPeviqVR+FciRFXEm1roOBg== X-Google-Smtp-Source: AMrXdXusMZKVRfz+I0FiNbs0ZgbJ4zYih2HKLbVkBZNu1hxLLEYSbjyuWVm3c/0AHzQXRcni+NMsGQ== X-Received: by 2002:a92:1306:0:b0:30c:4991:2eac with SMTP id 6-20020a921306000000b0030c49912eacmr6091790ilt.0.1673545332885; Thu, 12 Jan 2023 09:42:12 -0800 (PST) Received: from [192.168.1.94] ([207.135.234.126]) by smtp.gmail.com with ESMTPSA id c40-20020a023b28000000b0039d7e61f819sm5489571jaa.117.2023.01.12.09.42.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 12 Jan 2023 09:42:12 -0800 (PST) Message-ID: Date: Thu, 12 Jan 2023 10:42:11 -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_tw 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: <0000000000005a33e305f212b7f3@google.com> From: Jens Axboe In-Reply-To: <0000000000005a33e305f212b7f3@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 8:24 AM, syzbot wrote: > syzbot has found a reproducer for the following issue on: > > HEAD commit: 0a093b2893c7 Add linux-next specific files for 20230112 > git tree: linux-next > console+strace: https://syzkaller.appspot.com/x/log.txt?x=14b3995a480000 > kernel config: https://syzkaller.appspot.com/x/.config?x=835f3591019836d5 > dashboard link: https://syzkaller.appspot.com/bug?extid=ebcc33c1e81093c9224f > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11613181480000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=101a000e480000 #syz test: git://git.kernel.dk/linux.git for-next -- Jens Axboe