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=-5.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 DB320C35E04 for ; Tue, 25 Feb 2020 18:06:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A50E9206E6 for ; Tue, 25 Feb 2020 18:06:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="lCbDOjeR" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731052AbgBYSGs (ORCPT ); Tue, 25 Feb 2020 13:06:48 -0500 Received: from userp2120.oracle.com ([156.151.31.85]:43206 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728367AbgBYSGs (ORCPT ); Tue, 25 Feb 2020 13:06:48 -0500 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 01PI31vs179450; Tue, 25 Feb 2020 18:05:53 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=corp-2020-01-29; bh=CGvHcJIJqaZaY5M0QDL05EDvM2dcrysNjTcyUx/HJDw=; b=lCbDOjeRmp7BJCShZOjFG6HjxNzX/ECUjimFXRM4BxWcgHLdAMinc/HyA76/cUW51VKQ ovP7segEdr/oYKiflQd4AewAXWXL2BEff87j2Oga2pTuEDJ+8Jh4Bxn4kr4WJ54UOB2V 2ea890Emo5I3G54lIgmpvrS5YLdAo24+3qKj8X6TiCvR03kLxJawllGYJ9BiKjfEy8Gl PoRkjOkQ8NypEv83xfeX4o6i39KsayJwJ+1P0It6NfqCdXbtqfMNo0Y882S1aq6oZpRJ MrIIBcLvDgjbTOJ0mgKgfchm2XNGfCK5oAw8WoQTVugIrKh7CCf2HD5KYpO5gXkzkNZw jg== Received: from userp3020.oracle.com (userp3020.oracle.com [156.151.31.79]) by userp2120.oracle.com with ESMTP id 2yd0m1u64w-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 25 Feb 2020 18:05:52 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 01PHm1kX031965; Tue, 25 Feb 2020 18:05:52 GMT Received: from pps.reinject (localhost [127.0.0.1]) by userp3020.oracle.com with ESMTP id 2yd17qg4dh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 25 Feb 2020 18:05:52 +0000 Received: from userp3020.oracle.com (userp3020.oracle.com [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 01PI5pKl134669; Tue, 25 Feb 2020 18:05:52 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by userp3020.oracle.com with ESMTP id 2yd17qg4cy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 25 Feb 2020 18:05:51 +0000 Received: from abhmp0018.oracle.com (abhmp0018.oracle.com [141.146.116.24]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 01PI5nw3009467; Tue, 25 Feb 2020 18:05:49 GMT Received: from [10.209.227.41] (/10.209.227.41) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 25 Feb 2020 10:05:49 -0800 Subject: Re: general protection fault in rds_ib_add_one To: Hillf Danton Cc: syzbot , davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, syzkaller-bugs@googlegroups.com, Andy Grover References: <20200224103913.2776-1-hdanton@sina.com> <20200225044734.14680-1-hdanton@sina.com> From: santosh.shilimkar@oracle.com Organization: Oracle Corporation Message-ID: Date: Tue, 25 Feb 2020 10:05:48 -0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <20200225044734.14680-1-hdanton@sina.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9542 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 lowpriorityscore=0 mlxscore=0 suspectscore=0 bulkscore=0 adultscore=0 impostorscore=0 spamscore=0 phishscore=0 clxscore=1015 priorityscore=1501 malwarescore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002250129 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2/24/20 8:47 PM, Hillf Danton wrote: > > On Mon, 24 Feb 2020 09:51:01 -0800 Santosh Shilimkar wrote: >> On 2/24/20 2:39 AM, Hillf Danton wrote: >>> >>> Fall back to NUMA_NO_NODE if needed. > [...] >>> >> This seems good. Can you please post it as properly formatted patch ? > Thanks !! > ---8<--- > Subject: [PATCH] net/rds: fix gpf in rds_ib_add_one > From: Hillf Danton > > The devoted syzbot posted a gpf report. > > general protection fault, probably for non-canonical address 0xdffffc0000000086: 0000 [#1] PREEMPT SMP KASAN > KASAN: null-ptr-deref in range [0x0000000000000430-0x0000000000000437] > CPU: 0 PID: 8852 Comm: syz-executor043 Not tainted 5.6.0-rc2-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > RIP: 0010:dev_to_node include/linux/device.h:663 [inline] > RIP: 0010:rds_ib_add_one+0x81/0xe50 net/rds/ib.c:140 > Code: b7 a8 06 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 0e e4 1d fa bb 30 04 00 00 49 03 1e 48 89 d8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 f0 0a 00 00 8b 1b 48 c7 c0 28 0c 09 89 48 > RSP: 0018:ffffc90003087298 EFLAGS: 00010202 > RAX: 0000000000000086 RBX: 0000000000000430 RCX: 0000000000000000 > RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 > RBP: ffffc900030872f0 R08: ffffffff87964c3c R09: ffffed1014fd109c > R10: ffffed1014fd109c R11: 0000000000000000 R12: 0000000000000000 > R13: dffffc0000000000 R14: ffff8880a7e886a8 R15: ffff8880a7e88000 > FS: 0000000000c3d880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f0318ed0000 CR3: 00000000a3167000 CR4: 00000000001406f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > add_client_context+0x482/0x660 drivers/infiniband/core/device.c:681 > enable_device_and_get+0x15b/0x370 drivers/infiniband/core/device.c:1316 > ib_register_device+0x124d/0x15b0 drivers/infiniband/core/device.c:1382 > rxe_register_device+0x3f6/0x530 drivers/infiniband/sw/rxe/rxe_verbs.c:1231 > rxe_add+0x1373/0x14f0 drivers/infiniband/sw/rxe/rxe.c:302 > rxe_net_add+0x79/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:539 > rxe_newlink+0x31/0x90 drivers/infiniband/sw/rxe/rxe.c:318 > nldev_newlink+0x403/0x4a0 drivers/infiniband/core/nldev.c:1538 > rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:195 [inline] > rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] > rdma_nl_rcv+0x701/0xa20 drivers/infiniband/core/netlink.c:259 > netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] > netlink_unicast+0x766/0x920 net/netlink/af_netlink.c:1328 > netlink_sendmsg+0xa2b/0xd40 net/netlink/af_netlink.c:1917 > sock_sendmsg_nosec net/socket.c:652 [inline] > sock_sendmsg net/socket.c:672 [inline] > ____sys_sendmsg+0x4f7/0x7f0 net/socket.c:2343 > ___sys_sendmsg net/socket.c:2397 [inline] > __sys_sendmsg+0x1ed/0x290 net/socket.c:2430 > __do_sys_sendmsg net/socket.c:2439 [inline] > __se_sys_sendmsg net/socket.c:2437 [inline] > __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2437 > do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > > > It's fixed by falling back to NUMA_NO_NODE if needed while allocating > memory slices for send/recv rings at some cost of dip in performance. > > Reported-by: syzbot > Fixes: e4c52c98e049 ("RDS/IB: add _to_node() macros for numa and use {k,v}malloc_node()") > Cc: Santosh Shilimkar > Cc: Andy Grover > Signed-off-by: Hillf Danton > --- > Acked-by: Santosh Shilimkar > --- a/net/rds/ib.c > +++ b/net/rds/ib.c > @@ -137,7 +137,8 @@ static void rds_ib_add_one(struct ib_dev > return; > > rds_ibdev = kzalloc_node(sizeof(struct rds_ib_device), GFP_KERNEL, > - ibdev_to_node(device)); > + device->dev.parent ? > + ibdev_to_node(device) : NUMA_NO_NODE); > if (!rds_ibdev) > return; > > -- >