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=-4.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,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 383F4C47089 for ; Wed, 26 May 2021 16:33:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1301860FE3 for ; Wed, 26 May 2021 16:33:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234693AbhEZQeo (ORCPT ); Wed, 26 May 2021 12:34:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33582 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232891AbhEZQen (ORCPT ); Wed, 26 May 2021 12:34:43 -0400 Received: from mail-wm1-x331.google.com (mail-wm1-x331.google.com [IPv6:2a00:1450:4864:20::331]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D2187C061574; Wed, 26 May 2021 09:33:10 -0700 (PDT) Received: by mail-wm1-x331.google.com with SMTP id s5-20020a7bc0c50000b0290147d0c21c51so871157wmh.4; Wed, 26 May 2021 09:33:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:from:to:cc:references:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=TeMQf0+FO4ym4hfoS0vMKgOKCQ0f25mg9GpSl0nXAx4=; b=NdfZIzmtg8AV9+i2/ZJK84FGl8KxAq0sI1zLGz+4QEDHdH/oXgYZT++64Yd8rp3o+d VwUOfzwurhFS0+d1ch1f+ywU6E2R4RUXYRiiVHNc7VojKfFK2y3L1Du4YFQ5OwkxiRf+ 4pfyiBuVLY+iqWEJLFa5OHhCv6AaXqdOUsPtf9IMRasoSR5KIBu0wAW9zUe0a+6IjCq5 AV8o6OlOWYV/UHXWqZGtROmSMaGf3HReLO6788GyMaREGx3BOjU+UpqpjGIrTIU6pSUs FPinedH1n7Y2yCToiSO5qn2w5JryTquq14oSvc/fFY6JLhflG/dHotyQWzpLhAFe2rlm Ocmw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:references:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=TeMQf0+FO4ym4hfoS0vMKgOKCQ0f25mg9GpSl0nXAx4=; b=VzkAmoucHbigO8YnTw9auC5d3fd2vV9QQkSXwqixy/b0QJ+0icD5vBY4wTfzrK8+81 6KN0b7E+pf6RYGbEvIz7sPh47TZLOigrEiDHsYmIV2sUNaXsXUKNIUtqx5h0Q1/NAp6t ayo6jyoiKe3T/gD/49FTMvSjFge/AngfAVQw1yz/X2GZVWADPfPgigUlwTZSzOfdJUjs x1YC/5vjo4zRjCr1GNinMT/vY/GxjE+YLwKX+OSfdFB6/wysywx1TSHwbXEN4Ru0Qd0M OOw7rMIL7WO9L6LopCgMGOzisLv0JWxT1Q37ty0CmJ/VpWfoZ7u3h96YrN7zwFUw87HZ mzQQ== X-Gm-Message-State: AOAM533801VnEPpytjIrFxluMHm+q72aS4+/LlQlH/iW239UZim8wkQh Pli3nes31D+g+wbRnCQ+/Ps= X-Google-Smtp-Source: ABdhPJzH1UUmSHD3autQYEOj6mow+MtyrkyCZhDR0bW/18RPdCcwOCe89bcJO50YxIDQ6JflKGuj+g== X-Received: by 2002:a7b:c770:: with SMTP id x16mr3522670wmk.126.1622046789472; Wed, 26 May 2021 09:33:09 -0700 (PDT) Received: from [192.168.8.197] ([85.255.236.10]) by smtp.gmail.com with ESMTPSA id s2sm5661727wmc.21.2021.05.26.09.33.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 26 May 2021 09:33:09 -0700 (PDT) Subject: Re: [syzbot] KCSAN: data-race in __io_uring_cancel / io_uring_try_cancel_requests From: Pavel Begunkov To: Marco Elver , axboe@kernel.dk Cc: syzbot , io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, dvyukov@google.com References: <000000000000fa9f7005c33d83b9@google.com> Message-ID: <0b33f17e-9105-aad0-5d32-c3ed54a00da4@gmail.com> Date: Wed, 26 May 2021 17:33:00 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/26/21 5:29 PM, Pavel Begunkov wrote: > On 5/26/21 4:52 PM, Marco Elver wrote: >> Due to some moving around of code, the patch lost the actual fix (using >> atomically read io_wq) -- so here it is again ... hopefully as intended. >> :-) > > "fortify" damn it... fwiw, it's a reference to my own commit that came after -rc -- Pavel Begunkov