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=-0.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, T_DKIMWL_WL_HIGH,UNPARSEABLE_RELAY,URIBL_BLOCKED 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 7C2DEC3279B for ; Thu, 5 Jul 2018 00:32:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 23094240B5 for ; Thu, 5 Jul 2018 00:32:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="c4gdIgvy" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 23094240B5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=oracle.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753067AbeGEAcj (ORCPT ); Wed, 4 Jul 2018 20:32:39 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:59756 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752965AbeGEAch (ORCPT ); Wed, 4 Jul 2018 20:32:37 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w650TpD4036916; Thu, 5 Jul 2018 00:32:29 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-2017-10-26; bh=D6YZCyLpkZ/T8McVZcSk2Kew01fZOZyqUQ58z8/BWwQ=; b=c4gdIgvyYudRU7ICI18sqRJWLZH94y698rumEsJO3y9813LZpgWxIIVzdJxvmVH6jseL Pr29mm3even24/UQm9YtAw681h0cJfuP2nJI+3Qm6LMIbPivIHXDzo37ARQDsPk0HUyP vkn+dgDwxaOIWeWGRhn86Aa0qaOFP57Uizijv3bl12Rn08CadAHFGHh1ws6+OhFHMIVN XIyr6t1+6pKFRuGo+AU8+cZYK6pX1a317m7rqhwvNrL0n+VMFEGsk/FJq4miji9aqAss leD87AeBeTqVG20pkRYiYCVYU37Uyaxb34MmajnawaBqG5fZEPtDiWk3GWOhC260x17L VA== Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by userp2120.oracle.com with ESMTP id 2k0dnjkxhp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 05 Jul 2018 00:32:29 +0000 Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userv0022.oracle.com (8.14.4/8.14.4) with ESMTP id w650WRi8022767 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 5 Jul 2018 00:32:27 GMT Received: from abhmp0007.oracle.com (abhmp0007.oracle.com [141.146.116.13]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id w650WQMB009686; Thu, 5 Jul 2018 00:32:26 GMT Received: from dhcp-10-159-228-223.vpn.oracle.com (/10.159.228.223) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 04 Jul 2018 17:32:26 -0700 Subject: Re: general protection fault in rds_ib_get_mr To: Eric Biggers , linux-rdma@vger.kernel.org, rds-devel@oss.oracle.com Cc: syzbot , davem@davemloft.net, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <089e082ce58896ad350567ee4825@google.com> <20180513211058.GE677@sol.localdomain> <27665604-6a26-36e2-3a58-9c8b3d9eab80@oracle.com> <20180704213506.GH725@sol.localdomain> From: "santosh.shilimkar@oracle.com" Organization: Oracle Corporation Message-ID: <04c882dc-332e-92d6-fe76-b1dd3bedd71c@oracle.com> Date: Wed, 4 Jul 2018 17:32:20 -0700 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 In-Reply-To: <20180704213506.GH725@sol.localdomain> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8944 signatures=668704 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=3 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=909 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1806210000 definitions=main-1807050004 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/4/18 2:35 PM, Eric Biggers wrote: > On Sun, May 13, 2018 at 10:46:37PM -0700, santosh.shilimkar@oracle.com wrote: >> On 5/13/18 2:10 PM, Eric Biggers wrote: >>> On Wed, Mar 21, 2018 at 09:00:01AM -0700, syzbot wrote: >> >> [...] >> >> >>> Still reproducible on Linus' tree (commit 66e1c94db3cd4) and linux-next >>> (next-20180511). Here's a simplified reproducer: >>> >> Thanks for the test case !! >> [...] > > Ping; this RDS bug is still unfixed. The same reproducer I gave earlier still > works, even when run as a non-root user. I tested upstream commit > fc36def997cfd6 (v4.18-rc3-113-gfc36def997cfd), and linux-next commit > bce40927669338 (next-20180704). > Yeah I haven't sent a fix for this yet. Downstream we have refactored MR code and I wanted to get that upstream. With that this bug will also get addressed. I was hoping to get that series but since some optimisation is still pending investigations its getting delayed. Will find out if I can fix this panic in meantime with smaller change. Thanks for reminder. Regards, Santosh