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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 72F81C433E0 for ; Thu, 21 May 2020 14:08:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 362F02083E for ; Thu, 21 May 2020 14:08:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="cQK/u6Ij" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729823AbgEUOI1 (ORCPT ); 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Thu, 21 May 2020 14:08:16 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 04LDqVLg161832; Thu, 21 May 2020 14:08:16 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userp3030.oracle.com with ESMTP id 314gm982t9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 21 May 2020 14:08:15 +0000 Received: from abhmp0012.oracle.com (abhmp0012.oracle.com [141.146.116.18]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 04LE8DDm001199; Thu, 21 May 2020 14:08:13 GMT Received: from kadam (/41.57.98.10) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 21 May 2020 07:08:13 -0700 Date: Thu, 21 May 2020 17:08:03 +0300 From: Dan Carpenter To: syzbot Cc: bridge@lists.linux-foundation.org, davem@davemloft.net, horatiu.vultur@microchip.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, nikolay@cumulusnetworks.com, roopa@cumulusnetworks.com, syzkaller-bugs@googlegroups.com Subject: Re: KASAN: slab-out-of-bounds Read in br_mrp_parse Message-ID: <20200521140803.GI30374@kadam> References: <0000000000007b211005a6187dc9@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000000000007b211005a6187dc9@google.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9627 signatures=668686 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxlogscore=803 adultscore=0 phishscore=0 mlxscore=0 spamscore=0 suspectscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005210104 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9627 signatures=668686 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 lowpriorityscore=0 spamscore=0 mlxlogscore=829 clxscore=1011 priorityscore=1501 cotscore=-2147483648 impostorscore=0 bulkscore=0 adultscore=0 malwarescore=0 phishscore=0 mlxscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005210106 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 20, 2020 at 11:23:18AM -0700, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: dda18a5c selftests/bpf: Convert bpf_iter_test_kern{3, 4}.c.. > git tree: bpf-next ^^^^^^^^ I can figure out what this is from reading Next/Trees but it would be more useful if it were easier to script. > console output: https://syzkaller.appspot.com/x/log.txt?x=10c4e63c100000 > kernel config: https://syzkaller.appspot.com/x/.config?x=668983fd3dd1087e > dashboard link: https://syzkaller.appspot.com/bug?extid=9c6f0f1f8e32223df9a4 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17eaba3c100000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=128598f6100000 > regards, dan carpenter