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=-10.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 DD95EC433ED for ; Mon, 19 Apr 2021 17:51:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BDE8F6113C for ; Mon, 19 Apr 2021 17:51:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240149AbhDSRvi (ORCPT ); Mon, 19 Apr 2021 13:51:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34670 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240158AbhDSRvi (ORCPT ); Mon, 19 Apr 2021 13:51:38 -0400 Received: from mail-io1-xd30.google.com (mail-io1-xd30.google.com [IPv6:2607:f8b0:4864:20::d30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0ACF7C061761 for ; Mon, 19 Apr 2021 10:51:07 -0700 (PDT) Received: by mail-io1-xd30.google.com with SMTP id g125so7075306iof.3 for ; Mon, 19 Apr 2021 10:51:07 -0700 (PDT) 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=mBPy/kuTJuUrZLkWwHS3lWj/u450VV6pB+rdfegfvjY=; b=wGFGo25NU3QUJ9xq/yU8mQlt12iDfbifCsx6oQ3o0IMQe0mbQnhKW477azrdYqkJsx 0EkErXshYLbgkVSllkG+4V6fDmt/4hD2+9E4tHzD9awbKzFq6NYBTkBjSlTRNJ5urTqe srEelnboOvSRbMWiGSE6McaZo5YZc369NeQzT1nmwm2m4PTFV8yxLfiTt4TAUy0Yyyug 1QHeofzDafyqQjiKuTWSph/S94CjkqeJVBeNLWLuKhnoBavQkNRRSD32pwq7rQWgNmTy zX0TcefxLnpIvcS2CcMbzqn0Z+fCTGTitmYaETMl+1EDhJNAWvvnTaTPb55Q9YDbEVic zT1g== 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=mBPy/kuTJuUrZLkWwHS3lWj/u450VV6pB+rdfegfvjY=; b=PXjw4nHl/8xsx9EUcKrCj+AO52CwYhJ/3ZjwIX/eFdghrhtAajbx4o5ST4Xn/hZALJ 3ItS2Z7XIqe6ri8SuHXHNFBO31BwpDjV6mpqtMootImnaFjmqp/ndqYQmoee/UQGZnMU wV27eYUU2Ld+oZAYloO4WJ/4Pp4ctsEzDL0wtU1hxJ2X3yv6eWFF9HgvqfNSRC/Vnr8m qDyQetXsqKeg9u+EdqBj6kGjKAE1JJZDQYBho7PSt9k0umdyn/H2JUtKOwX36k0TtFKf Cad2Gm0ugzhy6lvpIr8NdujufeEfpziSBgCulzX54XvDhWmawRy6ucI18rTPh3k1qJcQ wJOA== X-Gm-Message-State: AOAM530e3xYwYIM1xjNBxBOawcYdqt9dCPvdLrxXy1mqmp9VDbA2+2ke oTHSxssao+0Ndh6jOhsDCi/YDQ== X-Google-Smtp-Source: ABdhPJzU0RP1DjE6xL0Yu1H6Ul3Mx/9UxO3jL5+rkP0peg9JfXJpharVKCTfxx+P/2slMQi+ROXrsQ== X-Received: by 2002:a05:6602:342a:: with SMTP id n42mr15511410ioz.88.1618854666497; Mon, 19 Apr 2021 10:51:06 -0700 (PDT) Received: from [192.168.1.30] ([65.144.74.34]) by smtp.gmail.com with ESMTPSA id b9sm7301940ioz.49.2021.04.19.10.51.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 19 Apr 2021 10:51:06 -0700 (PDT) Subject: Re: [syzbot] KASAN: use-after-free Read in __cpuhp_state_remove_instance To: syzbot , asml.silence@gmail.com, ducheng2@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: <0000000000000c120805c05452c0@google.com> From: Jens Axboe Message-ID: Date: Mon, 19 Apr 2021 11:51:05 -0600 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: <0000000000000c120805c05452c0@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 4/19/21 8:41 AM, syzbot wrote: > syzbot suspects this issue was fixed by commit: > > commit 470ec4ed8c91b4db398ad607c700e9ce88365202 > Author: Jens Axboe > Date: Fri Feb 26 17:20:34 2021 +0000 > > io-wq: fix double put of 'wq' in error path > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11e89cc5d00000 > start commit: cee407c5 Merge tag 'for-linus' of git://git.kernel.org/pub.. > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=8f67201de02a572b > dashboard link: https://syzkaller.appspot.com/bug?extid=38769495e847cea2dcca > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=154e360ad00000 > > If the result looks correct, please mark the issue as fixed by replying with: #syz fix: io-wq: fix double put of 'wq' in error path -- Jens Axboe