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=-5.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 E412CC433DB for ; Fri, 26 Feb 2021 22:07:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A36E164F17 for ; Fri, 26 Feb 2021 22:07:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229751AbhBZWHK (ORCPT ); Fri, 26 Feb 2021 17:07:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36766 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229698AbhBZWHJ (ORCPT ); Fri, 26 Feb 2021 17:07:09 -0500 Received: from mail-il1-x132.google.com (mail-il1-x132.google.com [IPv6:2607:f8b0:4864:20::132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 279B0C06174A for ; Fri, 26 Feb 2021 14:06:29 -0800 (PST) Received: by mail-il1-x132.google.com with SMTP id g9so9362735ilc.3 for ; Fri, 26 Feb 2021 14:06:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=VANCDcWoh1f32URoRwsZjblU0mIeGcRR751Yd9L+eAs=; b=dQj/x877P0oLdf6q6o1dwI2+hNol8yWG+5uHa4l5EVZ6WrFVdLa3NaSlF+sEbGG8eN wWbe7XW/RiZMUeNtf/oj1yUbZER5crvmBJQiq4JTYPzWb0+FIdH8lLebN/SESU8dk9/x L21fnF/F1N3y4dtRtG3t2Wz2AgG0b3Xi602Hy/ZhzP+5XN9VEi3/JMmHhb0blWsd2cLn hZuwcjxlOhD9dQsf9ucLXgs4xZOgx7vIy7OMau3/jZ7kXRn41KU4mfFaLKZdJDb7Euq4 CXmb5JeRBinEzLOpdcXOjRclGJVCAuawbmceWSGUBlZc8EscmXUdoaup+M+9BUeKSVT4 bTTg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=VANCDcWoh1f32URoRwsZjblU0mIeGcRR751Yd9L+eAs=; b=UJwjixt78TQZT6jbJzvSbkwBB3+dNFk6zEju0OJ09pBELa/DIh/m3COyImn/Oy2Jbn BVVo6SdYOT4GPIwTyw9sm3jMLWrAx2IZuE2Dw5isnrLltNn3eFkhNAzZlzNbqvDD/sef ZxN2sTv7tZ3M+ESeSjSGKs4rf5MK/O4GCNI8yzmt9FL+we6vDRMQt6CNOm5xHtcbO4ZU Zz0ASVbVuU24fx6TxAh0SqFk1xUKN6h0VL53jl7HZOrOGco0MZIO2pRdHI9K6SbwIWki TH5U/OyPfykNM0+CC4IZJuFJS1ADS8BjJoD14yPSkZMCDDo3DIurY72oQPG5oxWCnjpH MqJQ== X-Gm-Message-State: AOAM531xk14g10jCrPTLYKDuHQaUiXFUFSloG4t/l3oFJJbkCGGsCxSv OkfIdV7CgpXDlqqySCHUJ9f6Ww== X-Google-Smtp-Source: ABdhPJzPVWG0HeuUpPqT6vVcIZ6xemEmt2aexRvX3sdsSySMca54739XfKRTI5lc4ntTlJXPaffcBQ== X-Received: by 2002:a92:1e12:: with SMTP id e18mr4238333ile.270.1614377188641; Fri, 26 Feb 2021 14:06:28 -0800 (PST) Received: from [192.168.1.30] ([65.144.74.34]) by smtp.gmail.com with ESMTPSA id x3sm6044374iof.21.2021.02.26.14.06.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 26 Feb 2021 14:06:22 -0800 (PST) Subject: Re: KASAN: use-after-free Read in __cpuhp_state_remove_instance To: syzbot , asml.silence@gmail.com, dvyukov@google.com, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, mpe@ellerman.id.au, paulmck@kernel.org, peterz@infradead.org, qais.yousef@arm.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de References: <000000000000f3daed05bc440347@google.com> From: Jens Axboe Message-ID: <806645c8-5a35-2341-a08f-ccb93a9a1fb0@kernel.dk> Date: Fri, 26 Feb 2021 15:06:21 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <000000000000f3daed05bc440347@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 2/26/21 2:33 PM, syzbot wrote: > syzbot has found a reproducer for the following issue on: > > HEAD commit: d01f2f7e Add linux-next specific files for 20210226 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=114fa9ccd00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=a1746d2802a82a05 > dashboard link: https://syzkaller.appspot.com/bug?extid=38769495e847cea2dcca > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1181e0dad00000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+38769495e847cea2dcca@syzkaller.appspotmail.com This one is already fixed in the current tree. -- Jens Axboe