From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752974AbeAaDuL (ORCPT ); Tue, 30 Jan 2018 22:50:11 -0500 Received: from userp2130.oracle.com ([156.151.31.86]:45524 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751598AbeAaDuJ (ORCPT ); Tue, 30 Jan 2018 22:50:09 -0500 Subject: Re: BUG: spinlock bad magic (2) To: Eric Biggers , Dmitry Vyukov Cc: syzbot , David Miller , LKML , linux-rdma@vger.kernel.org, netdev , rds-devel@oss.oracle.com, syzkaller-bugs@googlegroups.com References: <001a113fae28c2fd6605609c97a2@google.com> <6dbd4f85-f3f2-97f3-5b82-451276fbf877@oracle.com> <20180130222811.yxfiqnlx3la3vyyw@gmail.com> From: "santosh.shilimkar@oracle.com" Organization: Oracle Corporation Message-ID: <24ea899d-d541-0274-c5bf-8a6e35473ca5@oracle.com> Date: Tue, 30 Jan 2018 19:49:51 -0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: <20180130222811.yxfiqnlx3la3vyyw@gmail.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=5900 definitions=8790 signatures=668657 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=356 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1801310047 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/30/18 2:28 PM, Eric Biggers wrote: > On Mon, Dec 18, 2017 at 06:01:30PM +0100, 'Dmitry Vyukov' via syzkaller-bugs wrote: >> On Mon, Dec 18, 2017 at 5:46 PM, Santosh Shilimkar >> wrote: >>> On 12/18/2017 4:36 AM, syzbot wrote: >>>> >>>> Hello, >>>> >>>> syzkaller hit the following crash on >>>> 6084b576dca2e898f5c101baef151f7bfdbb606d >>>> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/master >>>> compiler: gcc (GCC) 7.1.1 20170620 >>>> .config is attached >>>> Raw console output is attached. >>>> >>>> Unfortunately, I don't have any reproducer for this bug yet. >>>> >>> [...] >>> >>>> BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 >>>> IP: rds_send_xmit+0x80/0x930 net/rds/send.c:186 >>> >>> >>> This one seems to be same bug as reported as below. >>> >>> BUG: unable to handle kernel NULL pointer dereference in rds_send_xmit >> >> Hi Santosh, >> >> The proper syntax to tell syzbot about dups is this (from email footer): >> >>> See https://goo.gl/tpsmEJ for details. >>> Please credit me with: Reported-by: syzbot >>> syzbot will keep track of this bug report. >>> To mark this as a duplicate of another syzbot report, please reply with: >>> #syz dup: exact-subject-of-another-report >>> Note: all commands must start from beginning of the line in the email body. > > #syz dup: BUG: unable to handle kernel NULL pointer dereference in rds_send_xmit Ok. Noted.