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=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 6D3B2C00454 for ; Thu, 12 Dec 2019 12:25:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3D52A20663 for ; Thu, 12 Dec 2019 12:25:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729217AbfLLMZj (ORCPT ); Thu, 12 Dec 2019 07:25:39 -0500 Received: from mail-vs1-f68.google.com ([209.85.217.68]:41871 "EHLO mail-vs1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729159AbfLLMZg (ORCPT ); Thu, 12 Dec 2019 07:25:36 -0500 Received: by mail-vs1-f68.google.com with SMTP id f8so1375997vsq.8 for ; Thu, 12 Dec 2019 04:25:36 -0800 (PST) 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:openpgp:autocrypt :message-id:date:user-agent:mime-version:in-reply-to :content-transfer-encoding:content-language; bh=nWE0WzVk2grc01UMXx5PdJZzQ50JohF0IYTXTeaie6o=; b=lqAhJvGRJc6xPWjA6/Jwl5FDcX4ts/KW1gMJ4O+UM0JYVGgph3q+DZo5h+S3fi7N5u 56DJEXzaMDMdAxgCI5iIFjjVWjdiRPAMUfN/9vblc8SKRzJXhEJNZT44R9+bt5EmV5lV hjmkvJ9Yrh4dMoe6woYLU/4D8zv2nKThMUZypxyug/3hMLbs/ySy15TmEQEhwbg4PZV7 SntSGDj4goIKc4G9sOCx4umDcJqwtHPkAB0BbxFCaiiV5ndKh/UFyKcm3pq8p2urZ2BH /elPo0icC3Y7gM60RCI7dn8RRY4qHVTXTEsYWefbEpvvnSOjB7xbOLRJGTUjEVqXJhjW 2vbA== X-Gm-Message-State: APjAAAV50JAnJQiKrtu2mA1hKC35EKiQ95f/cgMz9wPHgPWs36QhiMGP pzfB92UiHg5Uu7o2+cGD0qShVQ== X-Google-Smtp-Source: APXvYqzB8fkahlfaqCAztd+46vvQ5AP/bVlMfwhSSRj1jq3Sbi328Kl5S6JcM1xF5SpZEXmfgisJJg== X-Received: by 2002:a67:bd0d:: with SMTP id y13mr6736335vsq.125.1576153535713; Thu, 12 Dec 2019 04:25:35 -0800 (PST) Received: from [192.168.100.205] ([168.181.51.72]) by smtp.gmail.com with ESMTPSA id s207sm3045069vss.10.2019.12.12.04.25.33 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 12 Dec 2019 04:25:35 -0800 (PST) Subject: Re: ppc64el kernel access of bad area (ext4_htree_store_dirent->rb_insert_color) To: "Theodore Y. Ts'o" Cc: ebiggers3@gmail.com, adilger.kernel@dilger.ca, bot+eb13811afcefe99cfe45081054e7883f569f949d@syzkaller.appspotmail.com, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <20171219215906.GA12465@gmail.com> <20191209132914.907306-1-rafaeldtinoco@ubuntu.com> <20191210020130.GA61323@mit.edu> From: Rafael David Tinoco Openpgp: preference=signencrypt Autocrypt: addr=rafaeldtinoco@ubuntu.com; keydata= mQINBFziBo8BEADHsbcl0wCbi6QltkV4rv/l4HXsYl+x781nSpJTm8gTa2KeeVEsUASLPfP8 KqpX/UfA5XahEFnNPx2E5/KvnChDA26LrjlBmVKOxjmwwWBeDYKaG+Bi8L4iXkvxLgGvQ/Oh Me9xWptEg3Yzw4UOGHsAaXUcUM+6bvOSWzPgz725JTFmJ9e6wwcqUM08YHdkB6p1AlcNXUUe VPVUMakPBXpY/SWm1XzvebG5zfA/h37hQmLLwA5DdU60Hzo4jAxxTWV+kkWb2qFvOu/i12Kn DOczDeZeDjPIaGDCTVt5OXkEXw4PRitX+KpABEAEunn4qiBNCGSq9B7EqCrN8DMYswUh2u7T 9rF79o3L1+rHM/4HZB98d61wBwAXse1ieAIAEuBsp7BuolWXiqzj34312Cg7DrvwRJt4UYQ5 t28n84TGba7VQNklE5e+5ezRi2wrCnTbnDpWMW+d+cfwAnUYj0nFAoqaGgLVC9lqRrsK1Jb1 hZwOBNQ6w9ehV+3tJIWmUtq7bJgtiswyY7Hs4ESFXizZSiY+u0gH+/P6A0LDqg6B8ZB6ymUm 4lQ6cPUxyLKcENQ5UDoTQw3/fWF0yN5c5WRqzzfQtWBQ2kDH8snh7TpOldIJRMYNn7Wx+YvU NlLjZ+YRge/qacR0fXDZOO3FjRNrMQp5czshgkhX14RNEG/upwARAQABtC5SYWZhZWwgRGF2 aWQgVGlub2NvIDxyYWZhZWxkdGlub2NvQHVidW50dS5jb20+iQJXBBMBCABBAhsjBQkJZgGA BQsJCAcCBhUKCQgLAgQWAgMBAh4BAheAFiEE9/EO4QjRa7yS94ISqT4OCtg8DQ8FAlzsdMgC GQEACgkQqT4OCtg8DQ8+LxAAsy8/vQxgumwJSqcyGJI19n1Cqj8JmMncz5clZLsV7glPVzS0 G+0lywMI2y1dD6+J0evdq7sAgFVwRLB2wPcpMw+xZafVDRw3DQzHR7lYH+0of2fak69rg4rk R9znhiA3CjxodiLAru5BqSdQbL+GLvym4cd4epJM8dNqTW9cMxhsp1CbjFkwaAxhaUO50feA rBAIEgC1FJ/350VPFPQBjHra/arI6Kz6bA+rnkv4ZmhIlrw3DF352yq50JVpyl+a5ySz2l1y Pj2yg7E1uKDxaxgHrfVn/tF+MDPltCpDCo2mr3FbLbzlkmHN7ZIGmi0tZEkUMwKYWTHYqCYK OGvUK0+vLwQ7EjXYQ+9RlQcdnuqjS18bgTMg8o3VVb2ebJk3q9JayAPieMJQ6b5dlpTwo0BR /zBwIH6WZ0TxWkmEk2fAOQUX2LNARDBukZmfQnmE3IeF2CmiZiVoHiMN/chGlSBJPCBPXMUO Zfjj9tzssYeYNy1n3oYP0tCXw1LXjBLn7K2UVazXGGJnvJUDkFnCJ0VlAe22q9QZiGQ/N6ST LwDM4NJtzKt94b8kctTtgT1xgV231OJ8asB2HBsR3+CZzuzMhWD3wdFC5/c+FHzj+SBDtL1/ 2vM2MoKRcu1S0iurk102B8NL5xHZT2PNDeOx2aO4cJSe2UKsONPkF5zTJGq5Ag0EXOIGjwEQ AKfTXqGdBBBsfBAf3Upq7DzoCA7KQKyb2ESOsHsQreoWfvaef/fzmTmysk9NqySApWfBKY3y B8Iy9gg7JoE1CqQ+Oo5xGIUZSRgQhou6KOpg+0IAs5bLtjj6SqyFfcJpNU1dTJ2ZIZG5pL6m 3ANEYFyZ0mIQ0BnzwwUG7EWAJLQZJXTmtPw4Iw0ARFMu7n1cIrPloMNTNIn/zdmY9nCkYv8a wRi++2LLkKxritK3geVE0bRHLaYjv/zatJ2HuhLTA2nj2bj4mihcxiduzLT9aYbNep88aRqP j6rZY+jGo+RnATZquvU+IiZxZOmLto6w68vqPfQFrKEyMa3qus8Rlg0APFUYXZYGUbRjko+g LYxaygMFoVe0BjESxp3AcO9kjLBdcvSnYSxbIJBmV579Vdcv1G2J4B9InN9f6LUP76cJpMfG dDBJMkDwJkE9NRNYGvYXzbBjWh1b2+if7Mn8Q7Fx4f2I1l92KhlzJaJUlAYAsDnWiiPLM6hE jhDDQ7XfUq00B/+4DuVTuqU6w/ImzSxo5lN/ceF8iBTmiNEhVFROCxsSG54kBnMpqRx0Vs3j 4/2lo/D4VCqrTiThDXEz+jFIPIhjYj4xdK4CC2fEKYxNEpW6xZZ5gd2t3pWdPAxPV2l6IOfk fPebjSQK+5fNH6GmJpJ9fVjg516dufFJHvDpABEBAAGJAjwEGAEIACYWIQT38Q7hCNFrvJL3 ghKpPg4K2DwNDwUCXOIGjwIbDAUJCWYBgAAKCRCpPg4K2DwND/CrD/41dcBxOndEySrnDYTx yo9PjGFPaPGh0R99cuV+KM/bjbMSi8HqNHbh/q0e4tCG13bE6E6LUOVfeQG9dLPZSQ4aRrsq ncu78Uo7JWkB1nDiTbBYUgaccku/UY93xcJydax5eEc/AMZ0g3PU1Vzn5eLmKw+HFt1ONKBO mTDTfQ5CVbUWdK1Uur9IJSw/2U84wBray/SbE3eRmzLuracM16VPwfY37ADC9d3pSh8VL7Uo D+2K9M9GiWZQiWv3kpCHSP5ISVcRB2Rqo1VrCZgqpl1rkQr+5nVgMcFETn99DXi/OXamXX9c YGyYGIRKKOoJO1wcU8k+4lKXC5Ik3sAwdNFNFJDRvSRGs5/jgu67mksXA4HCG18xZKKrRCER JgtYGsIJvVScknSPhxrT9MrAt1AVvOqs9iHXaDhuXcp3MRmHDPzprw8MGj+hcZXb5pUOIT11 HY6nyC9R7qQAVFY6VN6/H1UyW9Y0Hp8UXjVrHgw1FIFHGOwE4ekkRRr7cEQlbVPkLIBwexGM JBSO67Vr6iw/b60sHNzHwTItYhmXm7ih/IMtqVkQi/zYw3QObdr+NwK3vkamjOAHyyHRSLzc UUTEBgKD8bv2Gfv2kU0KlpQqmmA5DMVrkeZdmnxN3zWc7RGrGrnX8HPB1ImQ6R3yoNj+nZnC m+Bc0IpWoGZLnE2VPg== Message-ID: <2c227a55-5465-e264-dfb8-5ad49412df69@ubuntu.com> Date: Thu, 12 Dec 2019 09:25:32 -0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.1 MIME-Version: 1.0 In-Reply-To: <20191210020130.GA61323@mit.edu> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >> It looks like the same stacktrace that was reported in this thread. This has >> been reported to ppc64el AND we got a reproducer (ocfs2-tools autopkgtests). > Can you share your reproducer? Is it a super-simple reproducer that > doesn't require a complex setup and which can be triggered in some > kind of virtual machine (under KVM, etc.)? Yep, its the autopkgtests (debian/tests/*) from ocfs2-tools in bare metal ppc64el. A bunch of "mkfs.ocfs2, fsck.ocfs2, debugfs.ocfs2, mount.ocfs2" commands testing package. I got access to same HW that generated the trace, I'll generate a kdump and share more data soon.