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=-2.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 81435C43331 for ; Fri, 27 Mar 2020 15:06:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 580FE20748 for ; Fri, 27 Mar 2020 15:06:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="J80NARwE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727716AbgC0PGk (ORCPT ); Fri, 27 Mar 2020 11:06:40 -0400 Received: from mail-pg1-f179.google.com ([209.85.215.179]:43449 "EHLO mail-pg1-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727322AbgC0PGi (ORCPT ); Fri, 27 Mar 2020 11:06:38 -0400 Received: by mail-pg1-f179.google.com with SMTP id u12so4691041pgb.10 for ; Fri, 27 Mar 2020 08:06:37 -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=eXeiwmriuUHSGPIQ5FE/vs4fhtvCZSUZ3+noRetg2ao=; b=J80NARwEAtfKj8z76W4AvMB6js5ArpMXn6a03i9pbVQzqrM4mOTeWkHm5iLUvzWKq6 dvdMjte/1ibknnyKRwJhQgpA9uL2d4OucbWEktnWOfDfUhE3/Nin1yfF2DN9FgqoNm33 hNQKG3GYV1fXckGDsLsUagkYTLnTHw/Qic1FS1/hf0/YhrQ4qXe1NQblwT7DoW48ZfK8 Tc8Nej4b7pM3v2HivVo+eMvOYFgDALiweWzEwovBxrxHrGk39ihgZVhs902Mi+z/24FN 3bS482It5MEKjA2IRfolXEyRT4Xikvj3228njhM/OHjzR7GRbY7uJQ7fnAy1dRUMpOWy yI/w== 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=eXeiwmriuUHSGPIQ5FE/vs4fhtvCZSUZ3+noRetg2ao=; b=txq3nKDcJNP8JHjRIOLp52/xSmoZd2r+MzhvqnGWFn4hB6Ua68ratVGVn8Oct166Mz v4DpfztKLei8me1AnKO6V9R2LWorT2TGNZLmQRAQwJP0z9ySvmBhwwvZYurDwl7hCL4c ShBbqute0iWFpO5FIi4a/UG7BGZBGuYVbqnlo8PwvDZSNOPxc+f54QmC94QWF3v7FBJP Ph1EN15iuPteWHb9vutnC1VzbEuKwNW9415oGs1lWjN6Xno6u3k7A/upm2Pr3kQlVoo8 qe6JoVzvHiXjeRH8kBx9CkHH9pl3d8bPtTdUlpdh4/C1hAyPOXG0zqcgRDmNKJmBKtrH rIjQ== X-Gm-Message-State: ANhLgQ2nnXpIJkvGjQRZOAf+8jkSKjct9uG+ROvwW/VWXB1SjmymTSks 62gqeGlaHk910tbO8lVVzLmXDw== X-Google-Smtp-Source: ADFU+vs++DC7KxyU52I45Ga6jyMEVqGhwA7nu9vY/NNIxQmvXKQm1JdR/hw70GKZk7t4FSJKe8SEjw== X-Received: by 2002:a63:ef41:: with SMTP id c1mr13864299pgk.195.1585321596559; Fri, 27 Mar 2020 08:06:36 -0700 (PDT) Received: from [192.168.1.188] ([66.219.217.145]) by smtp.gmail.com with ESMTPSA id mq18sm4255882pjb.6.2020.03.27.08.06.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 27 Mar 2020 08:06:35 -0700 (PDT) Subject: Re: KASAN: null-ptr-deref Write in blk_mq_map_swqueue To: syzbot , a@unstable.cc, b.a.t.m.a.n@lists.open-mesh.org, davem@davemloft.net, dongli.zhang@oracle.com, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mareklindner@neomailbox.ch, netdev@vger.kernel.org, sven@narfation.org, sw@simonwunderlich.de, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk References: <0000000000004760b805a1cc03fc@google.com> From: Jens Axboe Message-ID: Date: Fri, 27 Mar 2020 09:06:32 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <0000000000004760b805a1cc03fc@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/26/20 7:28 PM, syzbot wrote: > syzbot has bisected this bug to: > > commit 768134d4f48109b90f4248feecbeeb7d684e410c > Author: Jens Axboe > Date: Mon Nov 11 03:30:53 2019 +0000 > > io_uring: don't do flush cancel under inflight_lock This is definitely an utterly bogus bisect, not related at all. -- Jens Axboe