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=-9.5 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,MENTIONS_GIT_HOSTING, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 17ED9C433DB for ; Thu, 14 Jan 2021 21:10:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B093823A3B for ; Thu, 14 Jan 2021 21:10:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727806AbhANVKJ (ORCPT ); Thu, 14 Jan 2021 16:10:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38616 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726262AbhANVKJ (ORCPT ); Thu, 14 Jan 2021 16:10:09 -0500 Received: from mail-wr1-x42f.google.com (mail-wr1-x42f.google.com [IPv6:2a00:1450:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0C0DAC061757; Thu, 14 Jan 2021 13:09:29 -0800 (PST) Received: by mail-wr1-x42f.google.com with SMTP id w5so7217491wrm.11; Thu, 14 Jan 2021 13:09:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:autocrypt:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=UkUxVV8Jp1GzPWzVwNrn6NYWM99VIRha2paln9gx7LE=; b=etOYhQqhcjx5Xyy/edCvDyC8s763zdYDI9r59nxByn5MD4WucVuwpgMDIKei+cntKD Y3FoG/isma6V0EQfbbuEWfZ/yfvwx2EXGgEXAE01dTv/lB9h5LG22bcQoZnFwHKzDeQN ignNzje5Vm/etT9CRkzkFpoQlaiUR8uE8vYp/60ioie7bTlUH6YJUeJul0CJGL1qkbZ1 YHXEwvsSy0LcGraRR5bAK3qxKMkk/vdzJNnRpwEK2HtRnAbyk6afuqTZqKHwimJQ/qv5 Uz+7xBQkOj+mwxY0Y62H+VolIrozg27fY69Cs4VugIt74+MJhE+nk8PNedp6EM+ZlFJp XX7A== 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:autocrypt:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=UkUxVV8Jp1GzPWzVwNrn6NYWM99VIRha2paln9gx7LE=; b=lNcdGb6cuzy8cjz9yW2JWZliJAeZd0NHNYfP/iykKQUvCNiBGgql4l6KqHucJdplBZ VMaeePKBqaEuQr3LHDDrE3jzqsh/r2ieAN41qfR9RYD/BhPR+scARV8TuUN84LIMqW+g mWDjcey36LxL9Nepl7jtjSHGJnHF9QOS6S9Z4Kl25w5YxzewGJ6FGAhHvLNWYbPmt/l6 lbIecY3ZvLHFZzux2jcsqWKyvnA6KbvQWYoIq+RAEU4b8jJpY50ckBbyms4gmhWJbyCh g4nLc+bDqZCtymhN6N9v5AhEl5hdR6umMlNpBaFx0RcPKNR/Gt5EI5vAVdzIo5hgmozV XbtA== X-Gm-Message-State: AOAM532b/PzF8co9S34gYiZOGgr2VESmgJBQVXOpu8WcSIHRM6R8jODi pIoQRL2rAY9aYXEDyzMG7y1Y1uaEGTSKKg== X-Google-Smtp-Source: ABdhPJw5eLIMdLTYTwv3nPBOsoXRX3TooVJLqV6BnnUjTkFvdgwGWT/irVW0o/cTaer+kgzorC8GEg== X-Received: by 2002:adf:9e47:: with SMTP id v7mr9711622wre.185.1610658567760; Thu, 14 Jan 2021 13:09:27 -0800 (PST) Received: from [192.168.8.122] ([85.255.233.192]) by smtp.gmail.com with ESMTPSA id r16sm11682369wrx.36.2021.01.14.13.09.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 14 Jan 2021 13:09:27 -0800 (PST) Subject: Re: general protection fault in io_uring_setup To: syzbot , axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk References: <00000000000067b86b05b8d72ff6@google.com> From: Pavel Begunkov Autocrypt: addr=asml.silence@gmail.com; prefer-encrypt=mutual; keydata= mQINBFmKBOQBEAC76ZFxLAKpDw0bKQ8CEiYJRGn8MHTUhURL02/7n1t0HkKQx2K1fCXClbps bdwSHrhOWdW61pmfMbDYbTj6ZvGRvhoLWfGkzujB2wjNcbNTXIoOzJEGISHaPf6E2IQx1ik9 6uqVkK1OMb7qRvKH0i7HYP4WJzYbEWVyLiAxUj611mC9tgd73oqZ2pLYzGTqF2j6a/obaqha +hXuWTvpDQXqcOZJXIW43atprH03G1tQs7VwR21Q1eq6Yvy2ESLdc38EqCszBfQRMmKy+cfp W3U9Mb1w0L680pXrONcnlDBCN7/sghGeMHjGKfNANjPc+0hzz3rApPxpoE7HC1uRiwC4et83 CKnncH1l7zgeBT9Oa3qEiBlaa1ZCBqrA4dY+z5fWJYjMpwI1SNp37RtF8fKXbKQg+JuUjAa9 Y6oXeyEvDHMyJYMcinl6xCqCBAXPHnHmawkMMgjr3BBRzODmMr+CPVvnYe7BFYfoajzqzq+h EyXSl3aBf0IDPTqSUrhbmjj5OEOYgRW5p+mdYtY1cXeK8copmd+fd/eTkghok5li58AojCba jRjp7zVOLOjDlpxxiKhuFmpV4yWNh5JJaTbwCRSd04sCcDNlJj+TehTr+o1QiORzc2t+N5iJ NbILft19Izdn8U39T5oWiynqa1qCLgbuFtnYx1HlUq/HvAm+kwARAQABtDFQYXZlbCBCZWd1 bmtvdiAoc2lsZW5jZSkgPGFzbWwuc2lsZW5jZUBnbWFpbC5jb20+iQJOBBMBCAA4FiEE+6Ju PTjTbx479o3OWt5b1Glr+6UFAlmKBOQCGwMFCwkIBwIGFQgJCgsCBBYCAwECHgECF4AACgkQ Wt5b1Glr+6WxZA//QueaKHzgdnOikJ7NA/Vq8FmhRlwgtP0+E+w93kL+ZGLzS/cUCIjn2f4Q Mcutj2Neg0CcYPX3b2nJiKr5Vn0rjJ/suiaOa1h1KzyNTOmxnsqE5fmxOf6C6x+NKE18I5Jy xzLQoktbdDVA7JfB1itt6iWSNoOTVcvFyvfe5ggy6FSCcP+m1RlR58XxVLH+qlAvxxOeEr/e aQfUzrs7gqdSd9zQGEZo0jtuBiB7k98t9y0oC9Jz0PJdvaj1NZUgtXG9pEtww3LdeXP/TkFl HBSxVflzeoFaj4UAuy8+uve7ya/ECNCc8kk0VYaEjoVrzJcYdKP583iRhOLlZA6HEmn/+Gh9 4orG67HNiJlbFiW3whxGizWsrtFNLsSP1YrEReYk9j1SoUHHzsu+ZtNfKuHIhK0sU07G1OPN 2rDLlzUWR9Jc22INAkhVHOogOcc5ajMGhgWcBJMLCoi219HlX69LIDu3Y34uIg9QPZIC2jwr 24W0kxmK6avJr7+n4o8m6sOJvhlumSp5TSNhRiKvAHB1I2JB8Q1yZCIPzx+w1ALxuoWiCdwV M/azguU42R17IuBzK0S3hPjXpEi2sK/k4pEPnHVUv9Cu09HCNnd6BRfFGjo8M9kZvw360gC1 reeMdqGjwQ68o9x0R7NBRrtUOh48TDLXCANAg97wjPoy37dQE7e5Ag0EWYoE5AEQAMWS+aBV IJtCjwtfCOV98NamFpDEjBMrCAfLm7wZlmXy5I6o7nzzCxEw06P2rhzp1hIqkaab1kHySU7g dkpjmQ7Jjlrf6KdMP87mC/Hx4+zgVCkTQCKkIxNE76Ff3O9uTvkWCspSh9J0qPYyCaVta2D1 Sq5HZ8WFcap71iVO1f2/FEHKJNz/YTSOS/W7dxJdXl2eoj3gYX2UZNfoaVv8OXKaWslZlgqN jSg9wsTv1K73AnQKt4fFhscN9YFxhtgD/SQuOldE5Ws4UlJoaFX/yCoJL3ky2kC0WFngzwRF Yo6u/KON/o28yyP+alYRMBrN0Dm60FuVSIFafSqXoJTIjSZ6olbEoT0u17Rag8BxnxryMrgR dkccq272MaSS0eOC9K2rtvxzddohRFPcy/8bkX+t2iukTDz75KSTKO+chce62Xxdg62dpkZX xK+HeDCZ7gRNZvAbDETr6XI63hPKi891GeZqvqQVYR8e+V2725w+H1iv3THiB1tx4L2bXZDI DtMKQ5D2RvCHNdPNcZeldEoJwKoA60yg6tuUquvsLvfCwtrmVI2rL2djYxRfGNmFMrUDN1Xq F3xozA91q3iZd9OYi9G+M/OA01husBdcIzj1hu0aL+MGg4Gqk6XwjoSxVd4YT41kTU7Kk+/I 5/Nf+i88ULt6HanBYcY/+Daeo/XFABEBAAGJAjYEGAEIACAWIQT7om49ONNvHjv2jc5a3lvU aWv7pQUCWYoE5AIbDAAKCRBa3lvUaWv7pfmcEACKTRQ28b1y5ztKuLdLr79+T+LwZKHjX++P 4wKjEOECCcB6KCv3hP+J2GCXDOPZvdg/ZYZafqP68Yy8AZqkfa4qPYHmIdpODtRzZSL48kM8 LRzV8Rl7J3ItvzdBRxf4T/Zseu5U6ELiQdCUkPGsJcPIJkgPjO2ROG/ZtYa9DvnShNWPlp+R uPwPccEQPWO/NP4fJl2zwC6byjljZhW5kxYswGMLBwb5cDUZAisIukyAa8Xshdan6C2RZcNs rB3L7vsg/R8UCehxOH0C+NypG2GqjVejNZsc7bgV49EOVltS+GmGyY+moIzxsuLmT93rqyII 5rSbbcTLe6KBYcs24XEoo49Zm9oDA3jYvNpeYD8rDcnNbuZh9kTgBwFN41JHOPv0W2FEEWqe JsCwQdcOQ56rtezdCJUYmRAt3BsfjN3Jn3N6rpodi4Dkdli8HylM5iq4ooeb5VkQ7UZxbCWt UVMKkOCdFhutRmYp0mbv2e87IK4erwNHQRkHUkzbsuym8RVpAZbLzLPIYK/J3RTErL6Z99N2 m3J6pjwSJY/zNwuFPs9zGEnRO4g0BUbwGdbuvDzaq6/3OJLKohr5eLXNU3JkT+3HezydWm3W OPhauth7W0db74Qd49HXK0xe/aPrK+Cp+kU1HRactyNtF8jZQbhMCC8vMGukZtWaAwpjWiiH bA== Message-ID: Date: Thu, 14 Jan 2021 21:05:53 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.3.0 MIME-Version: 1.0 In-Reply-To: <00000000000067b86b05b8d72ff6@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 14/01/2021 07:27, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 65f0d241 Merge tag 'sound-5.11-rc4' of git://git.kernel.or.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=16bbcd98d00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=ee2266946ed36986 > dashboard link: https://syzkaller.appspot.com/bug?extid=06b7d55a62acca161485 > compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17ef17fb500000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1045ef67500000 > > The issue was bisected to: > > commit d9d05217cb6990b9a56e13b56e7a1b71e2551f6c > Author: Pavel Begunkov > Date: Fri Jan 8 20:57:25 2021 +0000 > > io_uring: stop SQPOLL submit on creator's death > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=148ba0cf500000 > final oops: https://syzkaller.appspot.com/x/report.txt?x=168ba0cf500000 > console output: https://syzkaller.appspot.com/x/log.txt?x=128ba0cf500000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+06b7d55a62acca161485@syzkaller.appspotmail.com > Fixes: d9d05217cb69 ("io_uring: stop SQPOLL submit on creator's death") sure it's a duplicate #syz test: git://git.kernel.dk/linux-block 06585c497b55045ec21aa8128e340f6a6587351c > > Code: e8 cc ac 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 > RSP: 002b:00007ffc6a96c958 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 > RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000441889 > RDX: 0000000020ffd000 RSI: 0000000020000200 RDI: 0000000000003040 > RBP: 000000000000d8dd R08: 0000000000000001 R09: 0000000020ffd000 > R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020ffd000 > R13: 0000000020ffb000 R14: 0000000000000000 R15: 0000000000000000 > general protection fault, probably for non-canonical address 0xdffffc0000000022: 0000 [#1] PREEMPT SMP KASAN > KASAN: null-ptr-deref in range [0x0000000000000110-0x0000000000000117] > CPU: 0 PID: 8444 Comm: syz-executor770 Not tainted 5.11.0-rc3-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > RIP: 0010:io_ring_set_wakeup_flag fs/io_uring.c:6929 [inline] > RIP: 0010:io_disable_sqo_submit fs/io_uring.c:8891 [inline] > RIP: 0010:io_uring_create fs/io_uring.c:9711 [inline] > RIP: 0010:io_uring_setup fs/io_uring.c:9739 [inline] > RIP: 0010:__do_sys_io_uring_setup fs/io_uring.c:9745 [inline] > RIP: 0010:__se_sys_io_uring_setup+0x2abb/0x37b0 fs/io_uring.c:9742 > Code: c0 00 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 c5 31 de ff 41 be 14 01 00 00 4c 03 33 4c 89 f0 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 46 06 00 00 41 80 0e 01 48 8b 7c 24 30 e8 > RSP: 0018:ffffc90000edfca0 EFLAGS: 00010007 > RAX: 0000000000000022 RBX: ffff888021fe50c0 RCX: 0000000000000001 > RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000edfb80 > RBP: ffffc90000edff38 R08: dffffc0000000000 R09: 0000000000000003 > R10: fffff520001dbf71 R11: 0000000000000004 R12: 0000000000000001 > R13: dffffc0000000000 R14: 0000000000000114 R15: 00000000fffffff4 > FS: 0000000000975940(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000020000204 CR3: 00000000222d6000 CR4: 00000000001506f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 > entry_SYSCALL_64_after_hwframe+0x44/0xa9 > RIP: 0033:0x441889 > Code: e8 cc ac 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 > RSP: 002b:00007ffc6a96c958 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 > RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000441889 > RDX: 0000000020ffd000 RSI: 0000000020000200 RDI: 0000000000003040 > RBP: 000000000000d8dd R08: 0000000000000001 R09: 0000000020ffd000 > R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020ffd000 > R13: 0000000020ffb000 R14: 0000000000000000 R15: 0000000000000000 > Modules linked in: > ---[ end trace d873293344bf9303 ]--- > RIP: 0010:io_ring_set_wakeup_flag fs/io_uring.c:6929 [inline] > RIP: 0010:io_disable_sqo_submit fs/io_uring.c:8891 [inline] > RIP: 0010:io_uring_create fs/io_uring.c:9711 [inline] > RIP: 0010:io_uring_setup fs/io_uring.c:9739 [inline] > RIP: 0010:__do_sys_io_uring_setup fs/io_uring.c:9745 [inline] > RIP: 0010:__se_sys_io_uring_setup+0x2abb/0x37b0 fs/io_uring.c:9742 > Code: c0 00 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 c5 31 de ff 41 be 14 01 00 00 4c 03 33 4c 89 f0 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 46 06 00 00 41 80 0e 01 48 8b 7c 24 30 e8 > RSP: 0018:ffffc90000edfca0 EFLAGS: 00010007 > RAX: 0000000000000022 RBX: ffff888021fe50c0 RCX: 0000000000000001 > RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000edfb80 > RBP: ffffc90000edff38 R08: dffffc0000000000 R09: 0000000000000003 > R10: fffff520001dbf71 R11: 0000000000000004 R12: 0000000000000001 > R13: dffffc0000000000 R14: 0000000000000114 R15: 00000000fffffff4 > FS: 0000000000975940(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000020000204 CR3: 00000000222d6000 CR4: 00000000001506f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@googlegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > syzbot can test patches for this issue, for details see: > https://goo.gl/tpsmEJ#testing-patches > -- Pavel Begunkov