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, 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 2A81DC433E1 for ; Mon, 22 Mar 2021 04:17:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ED38261972 for ; Mon, 22 Mar 2021 04:17:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229761AbhCVEQL (ORCPT ); Mon, 22 Mar 2021 00:16:11 -0400 Received: from mail-pj1-f42.google.com ([209.85.216.42]:38802 "EHLO mail-pj1-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229746AbhCVEP7 (ORCPT ); Mon, 22 Mar 2021 00:15:59 -0400 Received: by mail-pj1-f42.google.com with SMTP id k23-20020a17090a5917b02901043e35ad4aso9704021pji.3; Sun, 21 Mar 2021 21:15:59 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=+Efirn7mPRYjnQYb6tYB8IzX6m7msSwDo1WIP+IniqI=; b=mqMzSidnIDS8QVW3ije1URBy6GNkZ9vmfL7/R+y2gH0rZCwbyBD01LJbk9llFQyiGY I4KvCSJm4kjx26JNKMsZ+Q+t9BENKe5oPkQrFFwIRhX6gRhfZEwmFcL1uRQAIjdOw8yX WEDLiN3sG4IAxL7kY/t1VARNvV1n0wuiblBS5LOlqF25EJWdvu0ZZM/XM02JTG6YGphe IoDGZ7imFGCs6qBzwtvWbHEbIaHSJxB3QYzbGPYWzFT0qspHaIFYcQH60FI705IGoaa8 gR3SulvklHYjcaQ333/thmxU9PGkclRNBqxiLRqi1nDTxC3KpbYKIfHFa8/L7UAyGFK7 Pkpg== X-Gm-Message-State: AOAM533bsuH+/P7Clu+ZGiuVREJck21bLglcl8JW+IH3yVFARER0Th76 TAR+11UPKbp4W6H00abaxotbeuZv9KM= X-Google-Smtp-Source: ABdhPJyy4hzCQbrpDcMR1K1eXIm5TbjtV0xn05BUHoQXK4Hs10asXJH43++Y75HVrvoGvmredwk8Nw== X-Received: by 2002:a17:90b:b0d:: with SMTP id bf13mr10929428pjb.7.1616386558671; Sun, 21 Mar 2021 21:15:58 -0700 (PDT) Received: from ?IPv6:2601:647:4000:d7:73ba:f946:66fe:d3aa? ([2601:647:4000:d7:73ba:f946:66fe:d3aa]) by smtp.gmail.com with ESMTPSA id 9sm10411801pgy.79.2021.03.21.21.15.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 21 Mar 2021 21:15:57 -0700 (PDT) Subject: Re: [syzbot] KASAN: use-after-free Read in disk_part_iter_next (2) To: Ming Lei Cc: syzbot , Jens Axboe , linux-block , Linux Kernel Mailing List , syzkaller-bugs@googlegroups.com, Hillf Danton References: <00000000000053da9405bd7d2644@google.com> From: Bart Van Assche Message-ID: <954345c8-6010-71b5-a723-192cd1556d6d@acm.org> Date: Sun, 21 Mar 2021 21:15:56 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 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 3/21/21 7:35 PM, Ming Lei wrote: > On Mon, Mar 22, 2021 at 7:03 AM Bart Van Assche wrote: >> >> On 3/14/21 4:08 AM, syzbot wrote: >>> syzbot found the following issue on: >>> >>> HEAD commit: 280d542f Merge tag 'drm-fixes-2021-03-05' of git://anongit.. >>> git tree: upstream >>> console output: https://syzkaller.appspot.com/x/log.txt?x=15ade5aed00000 >>> kernel config: https://syzkaller.appspot.com/x/.config?x=952047a9dbff6a6a >>> dashboard link: https://syzkaller.appspot.com/bug?extid=8fede7e30c7cee0de139 >> >> #syz test: https://github.com/bvanassche/linux a5f35387ebdc > > It should be the same issue which was addressed by > > aebf5db91705 block: fix use-after-free in disk_part_iter_next > > but converting to xarray introduced the issue again. Hi Ming, Since that patch does not re-apply cleanly, do you want to convert that patch to the latest kernel version or do you perhaps expect me to do that? Thanks, Bart.