From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031235AbeBNPVd (ORCPT ); Wed, 14 Feb 2018 10:21:33 -0500 Received: from userp2120.oracle.com ([156.151.31.85]:50304 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1031168AbeBNPVa (ORCPT ); Wed, 14 Feb 2018 10:21:30 -0500 Date: Wed, 14 Feb 2018 10:21:09 -0500 From: Sowmini Varadhan To: Dmitry Vyukov Cc: syzbot , David Miller , LKML , linux-rdma@vger.kernel.org, netdev , rds-devel@oss.oracle.com, Santosh Shilimkar , syzkaller-bugs@googlegroups.com Subject: Re: KASAN: use-after-free Read in rds_tcp_tune Message-ID: <20180214152109.GF11528@oracle.com> References: <001a1141a524c513ca05628d8ad4@google.com> <20180112183046.GA26098@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8804 signatures=668670 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=444 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1802140180 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (02/14/18 16:11), Dmitry Vyukov wrote: > > Hi Sowmini, > > Was this ever fixed? What's the fix? This still hangs as open. Please > provide "syz fix" tag. Are you still seeing this problem? I had expected that the changes around rds_destroy_pending - see commit ebeeb1ad9b8a - would have taken care of this (note that ebeeb1ad9b8a refactors/updates 3db6e0d172c9) but those fixes were done by inspection only. In other words, I was never able to reproduce this, so we may still have missed some race condition. --Sowmini